Hello, my partner! Let's explore the mining machine together!

[email protected]

double toggle crusher usa sales

crushing plants for sale

crushing plants for sale

As the name implies, a portable crusher or crushing plant is capable of breaking down almost type of material, organic or otherwise, from simple debris to complex ores and minerals. A concrete crusher, for example, can crush rocks and mix them with concrete and asphalt for roadside construction projects. Whether you need a used rock crusher for sale, a concrete crusher, or something for iron ore, sandstone, and other similar materials, the expert sellers at My Little Salesman have got you covered.

Choosing the right portable crusher largely depends on the type of industry youre in for example, you dont need a used stone crusher if you are going to be handling softer materials. No matter what you need to have crushed, however, there are three portable crusher types to choose from:

If you go with an impact crusher, you will have to choose between vertical and horizontal shafts. A vertical shaft impactor has a higher speed than a horizontal shaft impactor, which causes the materials to be busted into evenly-shaped cubes (which is good for handling uneven rock and ores). A horizontal shaft impactor uses hammers to do the job, and is therefore better for softer materials such as limestone and phosphate.

construction industry grows despite pandemic challenges | supply post - canada's #1 heavy construction equipment & commercial truck newspaper

construction industry grows despite pandemic challenges | supply post - canada's #1 heavy construction equipment & commercial truck newspaper

The findings of a new industry-wide survey released by the BC Construction Association (BCCA) for Construction Month 2021 reveal the career opportunity in a sector officially designated as essential to the provincial economy during pandemic.

B.C.s construction industry continued to operate safely despite COVID-19, which had the dual effect of increasing the financial stability, job satisfaction, and diversity of the workforce while putting new strains on employers who sought to balance safety protocols, late payments, rising costs and materials shortages with their responsibility to keep working when others could not.

B.C.s construction industry continues to be the number one employer in B.C.s goods sector, with more than 219,500 people relying directly on construction for a paycheque: thats down three percent since 2017, but at eight per cent of the total workforce is more than any other goods-producing sector.

Over the course of this pandemic year the top issues of concern to construction contractors shifted somewhat, although availability of skilled workforce remains the number one challenge regardless of labour affiliation. The chronic lack of prompt payment jumped from third to second place and worries about safety took the number three spot this year despite not being in the top five in past years. COVID-19 bumped out small business taxes from the number four spot, and public sector procurement practises remained at number five in the list of top concerns.

The BCCA survey results show an increasingly diverse workforce, where workers overall satisfaction as measured by their likelihood to recommend construction careers to friends and family rose 118 per cent from the prior year. Part of that increase can be attributed to financial health, with 18 per cent of workers reporting improvements year over year.

Women are showing increasing gains in this traditionally male industry, with 65 per cent of female respondents reporting an increase in income and 53 per cent reporting that they changed jobs for more pay over the past year. Women are more likely to have trade credentials and reported a higher overall satisfaction with the industry, resulting in women being 130 per cent more likely to recommend the construction industry as a career path than men. Part of this positivity is coming from an improved culture overall, with 83 per cent of employers reporting they have a policy in place that addresses the need for fair and equal treatment of all workers, compared to 60 per cent in 2017.

Despite the pandemic, 35 per cent of employers reported an increase in the size of their workforce, which is less of a gain than prior years but still significant. More than half of employer respondents say theyre offering more hours this year, and 90 per cent are paying overtime wages.

Our industry has been through a lot this past year, but amidst the challenges we can see that our workforce is getting more diverse, which will help our skilled labour shortage says Chris Atchison, BCCA President. The BC Budget 2021 has raised concerns for our contractors, who were anticipating more fulsome investments in infrastructure to offset extraordinary cost increases, and we continue to highlight the urgency of prompt payment legislation to alleviate the burden of late payments on competed work.

jaw crusher for primary crushing | fote machinery

jaw crusher for primary crushing | fote machinery

Applied materials: pebble, calcite, granite, quartz, concrete, dolomite, bluestone, iron ore, limestone, coal gangue, construction waste, ferrosilicon, basalt, sandstone, rocks, ore, glass, cement clinker and some metal.

Jaw crusher, invented by Whitney Blake in 1858, is a primary stone crushing machine for reducing minerals or stones into smaller sizes. It is a must-have machine in wide range of fields like mining, quarrying, and construction industries.

The movable jaw moving from side to side is hung on the mandrel. When the eccentric shaft is turning, its connecting rod moves up and down, which also drives the two toggle plates to do the same movement. Then the moveable jaw moves from side to side to realize crushing and unloading.

Although the movable jaw bears great broken counter-force and the eccentric shaft and the connecting rod bears little stress, industrial enterprises usually make large and middle size machine to crush hard materials. Additionally, the moving track of the movable jaw is an arc with the mandrel as its center.

The circular arc radius equals the distance from the point to the axis with the upper arc being smaller and the lower arc bigger. The crushing efficiency of the jaw crusher is quite high and the crushing ratio is 3-6.

We all know that jaw plate is the most easily worn parts among various of parts installed in jaw crusher. Therefore, in order to use the machine efficiently, the jaw plate should be checked and replaced regularly.

In June 2020, a customer from the Indonesia bought a jaw crusher(spesifikasi jaw crusher) produced by Fote Company to process limestone. According his production and final product demand, we recommand him this jaw stone crusher with capacity of 800t/h.

Powerful Manufacturer: Fote Heavy Machinery Co., Ltd. is a high-tech enterprise integrating R&D, production, sales and service. The hot jaw crushers manufactured by Fote Company can be further dividedinto four types:Blake jaw crusher, Dodge jaw crusher, PE universal jaw crusher and mobile jaw crusher.

Glorious History: In the past 37 years, the company has been committed to crushing equipment, beneficiation equipment, building materials equipment and industrial grinding equipment, providing high-grade sand and gravel solutions and high-end complete sets of equipment for large-scale projects such as highways, railways and hydropower.

Customers' satisfaction: The development of Fote always catches up with the development trend of the market, as a result, the quality of the crusher produced by Fote is guaranteed, and we always gain good feedback from the market.

High-quality Machine: This is mainly due to the crusher's characteristics of high reduction ratio, high productivity, simple structure and reliable performance. And maintenance is convenient and practical.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

difference between single & double toggle jaw crusher

difference between single & double toggle jaw crusher

A double toggle jaw crusher is much larger, heavier, more moving parts and lower throughput than modern single toggle jaw crushers. The lower throughput statement is a bit misleading because its partially attributed to the type of bearings they have versus modern crushers, so if one was to upgrade the bearings, throughput could be closer to that of a modern jaw.

Anyway, double toggle jaw crushes are really more about where the eccentric is located than anything. In a double toggle jaw crusher, the eccentric is located behind the swinging jaw. This has two main effects, it keeps the eccentric out of harms way because there is no shock loading from the rock being crushed being transferred to the eccentric shaft and bearings. The other effect is a limited plane of motion for the swinging jaw which contributes to its lack of productivity. The jaw moves like a swinging door that is hinged at the top and is being pushed open and pulled closed at the bottom. One toggle plate goes from the bottom of the eccentric arm to the bottom of the swinging jaw, the other toggle plate goes from the opposite side of the bottom of the eccentric arm to a fixed point at the very back of the jaw crusher frame.

In contrast, the single toggle jaw crusher has fewer shafts and bearings and only one toggle which goes from the bottom of the swinging jaw to a fixed point at the back of the jaw crusher. The eccentric is located at the top of the swinging jaw and is part of the shaft. The advantage of this is that the jaw has two motions that are happening at the same time. It has the same swinging door motion that the double toggle has, but also has the up and down motion from the eccentric.

The advent of curved jaw crusher wearing plates made an approach other than segmental layout analysis desirable for prediction of capacities. For some time it had been known that the drawing board capacities of crushers using these plates had to be considerably modified by complicated experience factors to achieve agreement with results. Because these apparent capacities could be readily increased severalfold by minor crushing chamber shape changes, it was necessary that the utmost precaution be taken in predicting capacities of jaw plates modified for nonchoking, special wear characteristics, or any other reason.

While this paper is concerned principally with standard type single-toggle crusher capacities, the evaluation of data obtained with these machines is simplified by comparative reduction to the 10 x 7 in. Blake-type equivalents upon which the summary of the preceding paper was made. Convertibility of data from one type of crusher to the other also tends towards confirmation of both. The agreement of these data is sufficient to be considered complimentary. Consequently the feed factors, f, previously reported for Blake crushers are slightly adjusted to an average with the single-toggle crusher results.

d is the apparent density of the broken product in pounds per cubic foot. (If the true specific gravity of the feed is known, 40 pct voids may be assumed and d becomes 37.4 times sp gr). w is the width of crushing chamber in inches. y is the open side setting of the crusher, in inches. In the case of corrugated jaw plates it is measured from the tip of one corrugation to the bottom of the valley opposite. t is the length of jaw stroke in inches at the bottom of the crushing chamber. It is the difference between open and close-side settings. n is rpm, or crushing cycles per minute. a is the nip-angle factor.

To bring the Blake and single-toggle type crusher capacity test results to common terms for evaluation, all data are converted to terms of 10 x 7 in. Blake-type performance at conditions of 100 lb per cu ft, 10 in. chamber width, 250 rpm, 0.65 in. stroke, 3-in. open-side setting, and 18 nip-angle. (The nip-angle of the 107 in. Blake is 18 at 3-in. setting.) The single-toggle crusher performances are also divided by the eccentric throw to bring this effect to unity.

In the Blake-type crusher tests, no capacity variation was noted for materials of different crushabilities, even though a wide range of materials was tested. These feeds had impact strengths ranging from 2.8 to 31 ft lb per in. of thickness as measured by the Bond method, (potash, coke, soft hematite, limestones, traprock, taconites.)

Greater differences in crushability-capacity effect than those just discussed for single-toggle type crushers have been reported by investigators working with small Dodge-type crushers. However, these crushers have rubbing motion between the jaws at the discharge, and in addition have very little jaw stroke at the discharge.

blake jaw crusher

blake jaw crusher

In the history of crushers, both chronologically, and by virtue of its standing in the field of heavy-duty crushing, the Blake jaw crusher stands first in the list. All of the large, heavy-duty primary crushers of the jaw type are built around the Blake principle which, for simplicity and brute strength, is unsurpassed by any mechanism thus far devised for rock and ore breaking.

A sectional view of a jaw crusher which incorporates the Blake double-toggle mechanism is shown below. The Blake crusher in common with all machines of the jaw family is built into a rectangular frame, at one end of which is located the crushing chamber; in fact, the end of the box-frame constitutes the stationary jaw. The movable or swing jaw is suspended from a cross-shaft (swing jaw shaft) at its upper end, this shaft in turn being supported at each end in bearings at the top of the two sides of the crusher frame.

The actuating mechanism consists of the eccentric-shaft (also supported in bearings in the sides of the frame), the pitman, and the pair of toggles, which span from swing jaw to pit-man, and from pitman to rear end of the frame. The motion of the eccentric-shaft is transmitted through the pitman to the inner ends of the toggle pair, and through their action to the lower end of the swing jaw, which pivots around the supporting shaft at its upper end. The motion is similar in one respect to that of the standard gyratory crusher, in that it is greatest at the discharge opening, and gradually decreases toward the upper part of the chamber.

The Blake Jaw crusher frames have been the subject of considerable variety in details of design and have been built of several different materials. Originally all frames were of cast iron, as was the case with all of the early gyratory machines. Then, as larger sizes were developed, cast steel became the common medium for all large and medium size crushers. When the Superior line was designed, semi-steel was selected for the frame, and steel rods extending through the side members from end to end were provided to absorb the tensile stresses. This type of construction is used in all sizes of this line, except in the 84 machines, where cast steel has been used exclusively up to the present time, these cast-steel frames being reinforced for heavy-duty applications in the same manner as the semi-steel frames of the smaller machines. Of recent years the trend has been very definitely toward the use of welded design, with side members of rolled steel plate, reinforced by stiffening ribs.

In past years both chilled cast iron andmanganese steel were used in jaw plates for the Blake crusher, depending upon the kind of rock to be crushed. The chilled ironplates did not possess the requisite strength to resist breakage, even when used on comparatively soft rock; in our case we have abandoned them in favor of manganese steel on all of our jaw crushers, regardless of size.

This crusher is representative, in its general proportions, of the prevailing practice in Blake crusher design for a number of years. In this respect it is probably just as well entitled to be classed as a standard type as the gyratory crusher which goes by that title. It is true that refinements have been made in almost every detail, as compared to early models, but the basic action and the general proportions of the crushing chamber are much the same.

The original Blake crusher was designed with a vertical stationary jaw. Probably the first departure from this arrangement was an 84 X 66 crusher, built in 1914. This machineconventional design, in that the swing jaw was made vertical. Later, when the Superior line was developed, a compromise between these two extremes was used in several of the sizes; that is, both jaws were sloped. Each of these three arrangements has certain features which are advantageous, and others which are unfavorable. Present indications are that the original arrangement, with vertical stationary jaw, will continue to hold a leading position.

Crushing angles in standard Blake-Type machines generally run in the neighborhood of 27 deg, at the minimum open-side discharge setting. Theratio-of-reduction at minimum recommended settings and with straight jaw plates average about 8:1, in the range of sizes from 15- x 10-in., to 60- x 48-in,, inclusive.

double-toggle blake crusher | henan deya machinery co., ltd

double-toggle blake crusher | henan deya machinery co., ltd

The distinctive feature of this class of crusher is the two plates which open and shut like animal jaws. The jaws are set at an acute angle to each other, and one jaw is pivoted so that it swings relative to the other fixed jaw. Material fed into the jaws is alternately nipped and released to fall further into the crushing chamber. Eventually it falls from the discharge aperture.

Jaw crushers are classified by the method of pivoting the swing jaw (see attached figure). In the Blake crusher the jaw is pivoted at the top and thus has a fixed receiving area and a variable discharge opening. In the Dodge crusher the jaw is pivoted at the bottom, giving it a variable feed area but fixed delivery area. The Dodge crusher is restricted to laboratory use, where close sizing is required, and is never used for heavy-duty crushing as it chokes very easily. The Universal crusher is pivoted in an intermediate position, and thus has a variable delivery and receiving area. Read more

mr 130i evo2 | mobile impact crushers | kleemann

mr 130i evo2 | mobile impact crushers | kleemann

The mobile impact crusher MOBIREX MR 130i EVO2 can be deployed universally as an all-rounder and produces first-class final grain quality. With a crusher inlet width of 1300 mm, it achieves a production rate that until now was only associated with considerably larger crushing plants. This is made possible by outstanding cost effectiveness and performance with a variety of technical highlights. Thanks to its compact design, the plant is easy to transport and can be assembled and disassembled quickly.

Independently vibrating double-deck prescreen guarantees effective screening of fine material for optimal final product qualityReduction in wear in the crusher by redirecting medium grain through the crusher bypassDischarge of fines via the side discharge conveyor; conveyor can be installed flexibly on right and left, rigidly, or hydraulically foldable

Continuous crusher feed thanks to intelligent feed control CFS:1. Sensors measure the load at the rocker and rotor as well as engine utilization2. Vibrating feeder and prescreen are controlled according to the load3. When the crushing chamber is free again after overloading, material transport is continued without a delayThe plant can be run again at full output fasterLess burden is placed on the downstream components, wear is also reducedShare of oversize grain is minimized

Optimal inlet geometry for improved feed behavior of material, thus increased throughputFewer blockages in crusher inlet area through crusher inlet cover which can be raised hydraulically and upper impact toggle (controlled by radio)Increased product quality thanks to C-shape rotor ledges for better impact over a long periodFully hydraulic gap setting via touch panel also possible with rotor running. Effective overload protection with automatic reset of the impact toggles by sensor-controlled hydraulic cylinder

Extremely efficient, high-performance diesel-directdrive for minimal consumption per ton of end productHigh-performance electric drives of chutes, screens and conveyors low consumption, no risk of hydraulic leaksHigh operating safety ensured by fluid couplingEasy service accessibility to all important components

All components and functions can be controlled easily; clearly arranged status display, e.g. speed, temperature, pressure, etc.Simple fault diagnosis with description and help on correctionTelematics system WITOS FleetView for efficient fleet and service management - with information on the operating status of the machines independent of location and time

Single-deck vibrating screen with extra-large screening surface for effective screening even with small grain sizes under 20 mmReturn conveyor for closed material loop; 100 swivel-mounted for side dischargeTransfer chute integrated in hopper for higher operational safety even with inhomogeneous material

Increased ground clearance in the area of the secondary screening unit and thus better transportability with different low-bed loadersEasy removal of the secondary screening unit and convenient transport due to compact container dimensions (width < 3m)

Easy removal of the secondary screening unit and convenient transport due to compact container dimensions (width < 3m)Secondary screening unit mounted on skids for easy loading using hook-lift systemLow weight makes for easy transportation

The easy-to-operate control concept SPECTIVE allows the machines to be operated at a touch panel. All components and functions can be controlled comfortably from the ground. SPECTIVE guides the operator step by step through the starting procedure. The start screen provides a graphical view of the plant with all adjustable functions at a glance. When the desired function is selected, clear instructions guide users through all operating steps. If a fault occurs, a fault diagnosis appears on the display. Fault localization, the description and remedy tips result in reduced downtimes. The 12" touch panel is resistant to dust and always easy to read thanks to the light intensity and high contrast. It reacts to fingers, pen or gloves.

SPECTIVE guides the operator step by step through the starting procedure. The start screen provides a graphical view of the plant with all adjustable functions at a glance. When the desired function is selected, clear instructions guide users through all operating steps. If a fault occurs, a fault diagnosis appears on the display. Fault localization, the description and remedy tips result in reduced downtimes. The 12" touch panel is resistant to dust and always easy to read thanks to the light intensity and high contrast. It reacts to fingers, pen or gloves.

Uniform loading is indispensable for a good product, optimum throughput and low wear. To ensure that the crushing chamber is always evenly filled, the Continuous Feed System (CFS) monitors the crusher level (jaw crusher and cone crusher) or the load at the rocker and rotor as well as the motor utilization (impact crusher).

To ensure that the crushing chamber is always evenly filled, the Continuous Feed System (CFS) monitors the crusher level (jaw crusher and cone crusher) or the load at the rocker and rotor as well as the motor utilization (impact crusher).

Independently of this, the CFS regulates the frequency of the vibrating feeder and prescreen. A backlog on the prescreen is thus avoided and crusher utilization is optimized. When the crushing chamber is free again after overloading, material transport is continued without a delay. The CFS facilitates the work of the operator because the machine automatically guarantees a homogeneous material flow, thus ensuring optimum loading of the crusher.

Independently of this, the CFS regulates the frequency of the vibrating feeder and prescreen. A backlog on the prescreen is thus avoided and crusher utilization is optimized. When the crushing chamber is free again after overloading, material transport is continued without a delay.

The WITOS FleetView telematic system provides support for efficient fleet and service management. It provides information on the operating status of the machine independently of the location and time. Even users with only one machine benefit from WITOS. From support for maintenance and diagnostic processes to the targeted control of the machines: the range of services is diversified and it is an ideal supplement to the WIRTGEN GROUP Smart Service agreements.

The WITOS FleetView telematic system provides support for efficient fleet and service management. It provides information on the operating status of the machine independently of the location and time. Even users with only one machine benefit from WITOS.

From support for maintenance and diagnostic processes to the targeted control of the machines: the range of services is diversified and it is an ideal supplement to the WIRTGEN GROUP Smart Service agreements.

The "Lock & Turn" system provides the highest level of safety during rotor ledge change and releasing bridging. Special keys for service flaps and components guarantee that uncontrolled movements of dangerous components are not possible and the plant or crusher can not be started when maintenance is being carried out. A standard series rotating device also allows the rotor of the crusher to be turned and blocked manually in any position from the outside. This enables the simple and safe replacement of rotor ledges and removal of material bridging.

The "Lock & Turn" system provides the highest level of safety during rotor ledge change and releasing bridging. Special keys for service flaps and components guarantee that uncontrolled movements of dangerous components are not possible and the plant or crusher can not be started when maintenance is being carried out.

A standard series rotating device also allows the rotor of the crusher to be turned and blocked manually in any position from the outside. This enables the simple and safe replacement of rotor ledges and removal of material bridging.

In some applications for example in road construction relocation of the crushing plant several times a day is necessary. When this is done, the plant should remain in operating mode so that it is quickly ready for operation again after it has been moved. The "Quick Track" option allows this to be controlled conveniently via the remote control without leaving the operating mode. Thanks to the time-saving (excavator driver does not need to go to the display, change operating mode, machine operation is not interrupted and therefore does not need to be started up again), the machine can continue working fast and productively.

In some applications for example in road construction relocation of the crushing plant several times a day is necessary. When this is done, the plant should remain in operating mode so that it is quickly ready for operation again after it has been moved. The "Quick Track" option allows this to be controlled conveniently via the remote control without leaving the operating mode.

Thanks to the time-saving (excavator driver does not need to go to the display, change operating mode, machine operation is not interrupted and therefore does not need to be started up again), the machine can continue working fast and productively.

jaw crusher introduction, jaw crusher pe 500x700 | henan deya machinery co., ltd

jaw crusher introduction, jaw crusher pe 500x700 | henan deya machinery co., ltd

The distinctive feature of this class of crusher is the two plates which open and shut like animal jaws. The jaws are set at an acute angle to each other, and one jaw is pivoted so that it swings relative to the other fixed jaw. Material fed into the jaws is alternately nipped and released to fall further into the crushing chamber. Eventually it falls from the discharge aperture.

Jaw crushers are classified by the method of pivoting the swing jaw (see attached figure). In the Blake crusher the jaw is pivoted at the top and thus has a fixed receiving area and a variable discharge opening. In the Dodge crusher the jaw is pivoted at the bottom, giving it a variable feed area but fixed delivery area. The Dodge crusher is restricted to laboratory use, where close sizing is required, and is never used for heavy-duty crushing as it chokes very easily. The Universal crusher is pivoted in an intermediate position, and thus has a variable delivery and receiving area.

The Blake crusher was patented by W.E. Blake in 1858 and variations in detail on the basic form are found in most of the jaw crushers used today. There are two forms of the Blake crusher double toggle and single toggle.

In this model (see attached figure), the oscillating movement of the swinging jaw is effected by vertical movement of the pitman. This moves up and down under the influence of the eccentric. The back toggle plate causes the pitman to move sideways as it is pushed upward. This motion is transferred to the front toggle plate and this in turn causes the swing jaw to close on the fixed jaw. Similarly, downward movement of the pitman allows the swing jaw to open. Blake jaw crusher (functional diagram) The important features of the machine are: Since the jaw is pivoted from above, it moves a minimum distance at the entry point and a maximum distance at the delivery. This maximum distance is called the throw of the crusher. The horizontal displacement of the swing jaw is greatest at the bottom of the pitman cycle and diminishes steadily through the rising half of the cycle as the angle between the pitman and the back toggle plate becomes less acute. The crushing force is least at the start of the cycle, when the angle between the toggles is most acute, and is strongest at the top, when full power is delivered over a reduced travel of the jaw. Attached figure shows a cross-section through a double toggle jaw crusher. All jaw crushers are rated according to their receiving areas, i.e. the width of the plates and the gape, which is the distance between the jaws at the feed opening. For example, 500x750mm jaw crusher has a width of 500 mm and a gape of 750 mm. Cross-section through double-toggle crusher Consider a large piece of rock falling into the mouth of the crusher. It is nipped by the jaws, which are moving relative to each other at a rate depending on the size of the machine and which usually varies inversely with the size. Basically, time must be given for the rock broken at each bite to fall to a new position before being nipped again. The ore falls until it is arrested. The swing jaw closes on it, quickly at first and then more slowly with increasing power towards the end of the stroke. The fragments now fall to a new arrest point as the jaws move apart and are then gripped and crushed again. During each bite of the jaws the rock swells in volume due to the creation of voids between the particles. Since the ore is also falling into a gradually reducing cross-sectional area of the crushing chamber, choking of the crusher would soon occur if it were not for the increasing amplitude of swing towards the discharge end of the crusher. This accelerates the material through the crusher, allowing it to discharge at a rate sufficient to leave space for material entering above. This is arrested or free crushing as opposed to choked crushing, which occurs when the volume of material arriving at a particular cross-section is greater than that leaving. In arrested crushing, crushing is by the jaws only, whereas in choked crushing, particles break each other. This interparticle comminution can lead to excessive production of fines, and if choking is severe can damage the crusher. The discharge size of material from the crusher is controlled by the set, which is the maximum opening of the jaws at the discharge end. This can be adjusted by using toggle plates of the required length. Wear on the jaws can be taken up by adjusting the back pillow into which the back toggle plate bears. A number of manufacturers offer jaw setting by hydraulic jacking, and some fit electromechanical systems which allow remote control. A feature of all jaw crushers is the heavy flywheel attached to the drive, which is necessary to store energy on the idling half of the stroke and deliver it on the crushing half. Since the jaw crusher works on half-cycle only, it is limited in capacity for its weight and size. Due to its alternate loading and release of stress, it must be very rugged and needs strong foundations to accommodate the vibrations. Single-toggle jaw crushers In this type of crusher (see attached figure) the swing jaw is suspended on the eccentric shaft, which allows a lighter, more compact design than with the double-toggle machine. The motion of the swing jaw also differs from that of the double-toggle design. Not only does the swing jaw move towards the fixed jaw, under the action of the toggle plate, but it also moves vertically as the eccentric rotates. This elliptical jaw motion assists in pushing rock through the crushing chamber. The single-toggle machine therefore has a somewhat higher capacity than the double-toggle machine of the same gape. The eccentric movement, however, increases the rate of wear on the jaw plates. Direct attachment of the swing jaw to the eccentric imposes a high degree of strain on the drive shaft, and so maintenance costs tend to be higher than with the double-toggle machine. Double-toggle machines cost about 50% more than single-toggle machines of the same size, and are usually used on tough, hard, abrasive materials. Cross-section of single-toggle jaw crusher Jaw-crusher construction Jaw crushers are extremely heavy-duty machines and hence must be robustly constructed. The main frame is often made from cast iron or steel, connected with tie-bolts. It is often made in sections so that it can be transported underground for installation. Modern jaw crushers may have a main frame of mild steel plate welded together. The jaws themselves are usually constructed from cast steel and are fitted with replaceable liners, made from manganese steel, or Ni-hard, a Ni-Cr alloyed cast iron. Apart from reducing wear, hard liners are essential in that they minimize crushing energy consumption, reducing the deformation of the surface at each contact point. They are bolted in sections on to the jaws so that they can be removed easily and reversed periodically to equalize wear. Cheek plates are fitted to the sides of the crushing chamber to protect the main frame from wear. These are also made from hard alloy steel and have similar lives to the jaw plates. The jaw plates themselves may be smooth, but are often corrugated, the latter being preferred for hard, abrasive materials. Patterns on the working surface of the crushing members also influence capacity, especially at small settings. Laboratory tests have demonstrated that the capacity is reduced about 50 times when a corrugated profile is used rather than a smooth surface. The corrugated profile is claimed to perform compound crushing by compression, tension, and shearing. Conventional smooth crushing plates tend to perform crushing by compression only, though irregular particles under compression loading might still break in tension. Since rocks are around 10 times weaker in tension than compression, power consumption and wear costs should be lower with the corrugated profiles. Nevertheless, some type of pattern is desirable for the jaw plate surface in a jaw crusher, partly to reduce the risk of undesired large flakes easily slipping through the straight opening, and partly to reduce the contact surface when crushing flaky blocks. In several installations, a slight wave shape has proved successful. The angle between the jaws is usually less than 26 degree as the use of a larger angle than this causes slipping, which reduces capacity and increases wear. In order to overcome problems of choking near the discharge of the crusher, which is possible if fines are present in the feed, curved plates are sometimes used. The lower end of the swing jaw is concave, whereas the opposite lower half of the fixed jaw is convex. This allows a more gradual reduction in size as the material nears the exit, hence minimizing the chances of packing. Less wear is also reported on the jaw plates, since the material is distributed over a larger area. The speed of jaw crushers varies inversely with the size, and usually lies in the range of 100-350 RPM. The main criterion in determining the optimum speed is that particles must be given sufficient time to move down the crusher throat into a new position before being nipped again. The maximum amplitude of swing of the jaw, or throw, is determined by the type of material being crushed and is usually adjusted by changing the eccentric. It varies from 1 to 7 cm depending on the machine size, and is highest for tough, plastic material and lowest for hard, brittle ore. The greater the throw, the less danger is there of chokage, as material is removed more quickly. This is offset by the fact that a large throw tends to produce more fines, which inhibits arrested crushing. Large throws also impart higher working stresses to the machine. In all crushers, provision must be made for avoiding the damage which could result from uncrushable material entering the chamber. Many jaw crushers are protected from such tramp material (usually metal objects) by a weak line of rivets on one of the toggle plates, although automatic tripout devices are now becoming more common, and one manufacturer uses automatic overload protection based on hydraulic cylinders between the fixed jaw and the frame. In the event of excessive pressure caused by an overload, the jaw is allowed to open, normal gap conditions being reasserted after clearance of the blockage. This allows a full crusher to be started under load. Jaw crushers range in size up to 1680 mm gape by 2130 mm width. This size machine will handle ore with a maximum size of 1.22 m at a crushing rate of approximately 725 TPH with a 203mm set. However, at crushing rates above 545 TPH the economic advantage of the jaw crusher over the gyratory diminishes; and above 725 TPH jaw crushers cannot compete with gyratory crushers. Assemble drawing and foundation drawing of typical model PE500x750 jaw crusher foundation drawing PE500x750 assemble drawing PE500x750 Jaw crusher produced by Henan Deya Machinery Co., Ltd. edfcofcofedfedfedfjaw-crusher-pe500x700_02jaw-crusher-pe500x700_01

Attached figure shows a cross-section through a double toggle jaw crusher. All jaw crushers are rated according to their receiving areas, i.e. the width of the plates and the gape, which is the distance between the jaws at the feed opening. For example, 500x750mm jaw crusher has a width of 500 mm and a gape of 750 mm.

Consider a large piece of rock falling into the mouth of the crusher. It is nipped by the jaws, which are moving relative to each other at a rate depending on the size of the machine and which usually varies inversely with the size. Basically, time must be given for the rock broken at each bite to fall to a new position before being nipped again. The ore falls until it is arrested. The swing jaw closes on it, quickly at first and then more slowly with increasing power towards the end of the stroke. The fragments now fall to a new arrest point as the jaws move apart and are then gripped and crushed again. During each bite of the jaws the rock swells in volume due to the creation of voids between the particles. Since the ore is also falling into a gradually reducing cross-sectional area of the crushing chamber, choking of the crusher would soon occur if it were not for the increasing amplitude of swing towards the discharge end of the crusher. This accelerates the material through the crusher, allowing it to discharge at a rate sufficient to leave space for material entering above. This is arrested or free crushing as opposed to choked crushing, which occurs when the volume of material arriving at a particular cross-section is greater than that leaving. In arrested crushing, crushing is by the jaws only, whereas in choked crushing, particles break each other. This interparticle comminution can lead to excessive production of fines, and if choking is severe can damage the crusher.

The discharge size of material from the crusher is controlled by the set, which is the maximum opening of the jaws at the discharge end. This can be adjusted by using toggle plates of the required length. Wear on the jaws can be taken up by adjusting the back pillow into which the back toggle plate bears. A number of manufacturers offer jaw setting by hydraulic jacking, and some fit electromechanical systems which allow remote control.

A feature of all jaw crushers is the heavy flywheel attached to the drive, which is necessary to store energy on the idling half of the stroke and deliver it on the crushing half. Since the jaw crusher works on half-cycle only, it is limited in capacity for its weight and size. Due to its alternate loading and release of stress, it must be very rugged and needs strong foundations to accommodate the vibrations.

In this type of crusher (see attached figure) the swing jaw is suspended on the eccentric shaft, which allows a lighter, more compact design than with the double-toggle machine. The motion of the swing jaw also differs from that of the double-toggle design. Not only does the swing jaw move towards the fixed jaw, under the action of the toggle plate, but it also moves vertically as the eccentric rotates. This elliptical jaw motion assists in pushing rock through the crushing chamber. The single-toggle machine therefore has a somewhat higher capacity than the double-toggle machine of the same gape. The eccentric movement, however, increases the rate of wear on the jaw plates. Direct attachment of the swing jaw to the eccentric imposes a high degree of strain on the drive shaft, and so maintenance costs tend to be higher than with the double-toggle machine. Double-toggle machines cost about 50% more than single-toggle machines of the same size, and are usually used on tough, hard, abrasive materials. Cross-section of single-toggle jaw crusher Jaw-crusher construction Jaw crushers are extremely heavy-duty machines and hence must be robustly constructed. The main frame is often made from cast iron or steel, connected with tie-bolts. It is often made in sections so that it can be transported underground for installation. Modern jaw crushers may have a main frame of mild steel plate welded together. The jaws themselves are usually constructed from cast steel and are fitted with replaceable liners, made from manganese steel, or Ni-hard, a Ni-Cr alloyed cast iron. Apart from reducing wear, hard liners are essential in that they minimize crushing energy consumption, reducing the deformation of the surface at each contact point. They are bolted in sections on to the jaws so that they can be removed easily and reversed periodically to equalize wear. Cheek plates are fitted to the sides of the crushing chamber to protect the main frame from wear. These are also made from hard alloy steel and have similar lives to the jaw plates. The jaw plates themselves may be smooth, but are often corrugated, the latter being preferred for hard, abrasive materials. Patterns on the working surface of the crushing members also influence capacity, especially at small settings. Laboratory tests have demonstrated that the capacity is reduced about 50 times when a corrugated profile is used rather than a smooth surface. The corrugated profile is claimed to perform compound crushing by compression, tension, and shearing. Conventional smooth crushing plates tend to perform crushing by compression only, though irregular particles under compression loading might still break in tension. Since rocks are around 10 times weaker in tension than compression, power consumption and wear costs should be lower with the corrugated profiles. Nevertheless, some type of pattern is desirable for the jaw plate surface in a jaw crusher, partly to reduce the risk of undesired large flakes easily slipping through the straight opening, and partly to reduce the contact surface when crushing flaky blocks. In several installations, a slight wave shape has proved successful. The angle between the jaws is usually less than 26 degree as the use of a larger angle than this causes slipping, which reduces capacity and increases wear. In order to overcome problems of choking near the discharge of the crusher, which is possible if fines are present in the feed, curved plates are sometimes used. The lower end of the swing jaw is concave, whereas the opposite lower half of the fixed jaw is convex. This allows a more gradual reduction in size as the material nears the exit, hence minimizing the chances of packing. Less wear is also reported on the jaw plates, since the material is distributed over a larger area. The speed of jaw crushers varies inversely with the size, and usually lies in the range of 100-350 RPM. The main criterion in determining the optimum speed is that particles must be given sufficient time to move down the crusher throat into a new position before being nipped again. The maximum amplitude of swing of the jaw, or throw, is determined by the type of material being crushed and is usually adjusted by changing the eccentric. It varies from 1 to 7 cm depending on the machine size, and is highest for tough, plastic material and lowest for hard, brittle ore. The greater the throw, the less danger is there of chokage, as material is removed more quickly. This is offset by the fact that a large throw tends to produce more fines, which inhibits arrested crushing. Large throws also impart higher working stresses to the machine. In all crushers, provision must be made for avoiding the damage which could result from uncrushable material entering the chamber. Many jaw crushers are protected from such tramp material (usually metal objects) by a weak line of rivets on one of the toggle plates, although automatic tripout devices are now becoming more common, and one manufacturer uses automatic overload protection based on hydraulic cylinders between the fixed jaw and the frame. In the event of excessive pressure caused by an overload, the jaw is allowed to open, normal gap conditions being reasserted after clearance of the blockage. This allows a full crusher to be started under load. Jaw crushers range in size up to 1680 mm gape by 2130 mm width. This size machine will handle ore with a maximum size of 1.22 m at a crushing rate of approximately 725 TPH with a 203mm set. However, at crushing rates above 545 TPH the economic advantage of the jaw crusher over the gyratory diminishes; and above 725 TPH jaw crushers cannot compete with gyratory crushers. Assemble drawing and foundation drawing of typical model PE500x750 jaw crusher foundation drawing PE500x750 assemble drawing PE500x750 Jaw crusher produced by Henan Deya Machinery Co., Ltd. edfcofcofedfedfedfjaw-crusher-pe500x700_02jaw-crusher-pe500x700_01

Jaw crushers are extremely heavy-duty machines and hence must be robustly constructed. The main frame is often made from cast iron or steel, connected with tie-bolts. It is often made in sections so that it can be transported underground for installation. Modern jaw crushers may have a main frame of mild steel plate welded together.

The jaws themselves are usually constructed from cast steel and are fitted with replaceable liners, made from manganese steel, or Ni-hard, a Ni-Cr alloyed cast iron. Apart from reducing wear, hard liners are essential in that they minimize crushing energy consumption, reducing the deformation of the surface at each contact point. They are bolted in sections on to the jaws so that they can be removed easily and reversed periodically to equalize wear. Cheek plates are fitted to the sides of the crushing chamber to protect the main frame from wear. These are also made from hard alloy steel and have similar lives to the jaw plates. The jaw plates themselves may be smooth, but are often corrugated, the latter being preferred for hard, abrasive materials. Patterns on the working surface of the crushing members also influence capacity, especially at small settings. Laboratory tests have demonstrated that the capacity is reduced about 50 times when a corrugated profile is used rather than a smooth surface. The corrugated profile is claimed to perform compound crushing by compression, tension, and shearing. Conventional smooth crushing plates tend to perform crushing by compression only, though irregular particles under compression loading might still break in tension. Since rocks are around 10 times weaker in tension than compression, power consumption and wear costs should be lower with the corrugated profiles. Nevertheless, some type of pattern is desirable for the jaw plate surface in a jaw crusher, partly to reduce the risk of undesired large flakes easily slipping through the straight opening, and partly to reduce the contact surface when crushing flaky blocks. In several installations, a slight wave shape has proved successful. The angle between the jaws is usually less than 26 degree as the use of a larger angle than this causes slipping, which reduces capacity and increases wear.

In order to overcome problems of choking near the discharge of the crusher, which is possible if fines are present in the feed, curved plates are sometimes used. The lower end of the swing jaw is concave, whereas the opposite lower half of the fixed jaw is convex. This allows a more gradual reduction in size as the material nears the exit, hence minimizing the chances of packing. Less wear is also reported on the jaw plates, since the material is distributed over a larger area.

The speed of jaw crushers varies inversely with the size, and usually lies in the range of 100-350 RPM. The main criterion in determining the optimum speed is that particles must be given sufficient time to move down the crusher throat into a new position before being nipped again.

The maximum amplitude of swing of the jaw, or throw, is determined by the type of material being crushed and is usually adjusted by changing the eccentric. It varies from 1 to 7 cm depending on the machine size, and is highest for tough, plastic material and lowest for hard, brittle ore. The greater the throw, the less danger is there of chokage, as material is removed more quickly. This is offset by the fact that a large throw tends to produce more fines, which inhibits arrested crushing. Large throws also impart higher working stresses to the machine.

In all crushers, provision must be made for avoiding the damage which could result from uncrushable material entering the chamber. Many jaw crushers are protected from such tramp material (usually metal objects) by a weak line of rivets on one of the toggle plates, although automatic tripout devices are now becoming more common, and one manufacturer uses automatic overload protection based on hydraulic cylinders between the fixed jaw and the frame. In the event of excessive pressure caused by an overload, the jaw is allowed to open, normal gap conditions being reasserted after clearance of the blockage. This allows a full crusher to be started under load.

Jaw crushers range in size up to 1680 mm gape by 2130 mm width. This size machine will handle ore with a maximum size of 1.22 m at a crushing rate of approximately 725 TPH with a 203mm set. However, at crushing rates above 545 TPH the economic advantage of the jaw crusher over the gyratory diminishes; and above 725 TPH jaw crushers cannot compete with gyratory crushers.

attachments for heavy equipment, used excavator buckets, rippers, hammers, demolition tools

attachments for heavy equipment, used excavator buckets, rippers, hammers, demolition tools

Welcome to Attachmart.com, the marketplace for new and used attachments. Here, you'll find excavator buckets and grapples, backhoe buckets, skid steer attachments, hydraulic hammers and breakers, steel shears, concrete pulverizers, thumbs, rippers, winches, tractor equipment and more. You'll also find major components such as booms and sticks, hydraulic cylinders, shell kits, transmissions and torque converters.

Our3 main sections - SEARCH, ADVERTISE & WANTED - areorganizedto help you reach your objective. SEARCH contains search tips,additional search functions, and links to attachment manufacturers' websites. In ADVERTISE, you'll find advertising rates and customer testimonials. Can't find what you're looking for? Post a free 30 day WANTEDad and letothers do the searching for you.

manufacturer, supplier of stone crushers, stone crusher plants in india

manufacturer, supplier of stone crushers, stone crusher plants in india

MewarHitechis committedto excellencein the quality of its equipment and takes pride in on dedication to customers and associates. As a top Crusher Machine Manufacturers & Suppliers in India, we are committedto offer the best qualitycrushers, screens & customized size reduction equipment, stone crusher machines and plants with satisfactory after sales services at competitive prices. We timely deliver out high quality equipment to meet customer need.

We provide professional advice to our customer, findinnovativesolutions to their specific requirements and treat them us our business partners, our professional approach, after sales service and timely supply of spare parts at most reasonable prices make us an ideal choice as business partners.

MEWAR'Sseries of Horizontal Shaft impacter is widely applied in mining,, energy and chemical industry. Horizontal Shaft Impactor has reasonable structure, high productivity, easy maintenance and safe performance. The

All in coming materials (including castings done in-house) are tested before these are used in manufacture of equipment. Our qualified and experienced engineers, technicians and workmen have dedicated approach. They are given in-house and external trainings and our approach is of zero defect. Our equipment is fully tested before dispatch and performance tests are carried out before dispatch.

Mewar Hitech keeps inventory of consumables and spares and these are supplied at short notice and at reasonable prices. Our CMD, Mr. CS Rathore personally monitors quality control of equipment manufactured by us.

Related News
  1. stone 3 by portola paints
  2. mineral processing equipments
  3. north america 1 zenith mineral processing equipment
  4. rock crusher excavator
  5. difference between double toggleand single toggle jaw crushers
  6. rock crusher elm
  7. south african mining equipment suppliers mining equipment manufacturers
  8. quartz mining quarry
  9. fuel consumption of mining equipment
  10. pre independence german gold mining in kenya
  11. simple structure flotation machine for copper ore
  12. large stone sand washer in ilorin
  13. methods of a grinding machine
  14. durres efficient large cobblestone classifier manufacturer
  15. cement mixture machine uae cement mixture machine uae manufacturers in
  16. mobile crusher in india
  17. distributor end mill merk nachi
  18. indonesia coal grinding mill
  19. efficient portable mineral stone crushing machine for sale in guadalajara
  20. mesin crusher penghancur batubara in south africa