how to change toggle plate in jaw crusher video

the most practical jaw crusher repair and maintenance manual | fote machinery

the most practical jaw crusher repair and maintenance manual | fote machinery

Just like other stone crusher machines, jaw crusher also needs a regular repair and maintenance after a certain time of working, or it will get decreased service life because of severe wear of important parts.

So many customers have common misconception that jaw plates only need repair when appearing flat, holes, cracks. Actually if jaw plates wears badly, it is not only hard to repair but seriously affects the normal working of other parts, which then will take a great sum of money to change a jaw plate and maintain other parts.

The pitman drives the moveable jaw dies to push stone material towards stationary jaws, which would create strong pressing forces to both jaw dies. Therefore, if the pitman cannot get lubrication in time, it will be broken under the high pressure of material and interrupt the whole work.

Proper plan and preparation make the whole repair and maintenance ordered and effective, which helps operators save time, cost, and enhance their safety. You can make a checklist just like the following chart in which you can list need-checked jaw crusher parts with a different period then making a mark if you are done with them. This not only prevents missed inspections, but also makes the arrangement clear, and saves a lot of time.

The lubrication of the interface between the parts of the jaw crusher is very important. It can minimize the friction generated during the operation, make the whole jaw crusher run smoothly, and extend its service life.

Unlike gyratory crushers, the main lubrication used in jaw crushers is grease instead of oil. When using grease, there may be several different ways to inject it into the necessary lubrication points. It can be operated manually with a grease gun, an oiler or metering pump.

Eccentric shaft (pitman bearing): It is behind the moveable jaw plate, and together with flywheel with toggle plate to create a motion. So, the most important thing you must do is keeping a regular lubrication to eccentric shaft, or you will spend more than four hours in changing a new one when it is broken.

Main shaft To keep the main shaft in good lubricating situation, you need to guarantee enough geese between thrust plate.The grease added to the bearing box needs to occupy about 50% of its space and be replaced every 3-6 months. When changing the engine oil, please use clean gasoline or kerosene to clean the roller bearing raceways.

There are different jaw plates material in the market, and some of them suits for hard stone while other is not. Therefore, you have to choose the right jaw plate for your crusher. For example, generally the jaw plate of single toggle jaw crusher is not good at crushing strongly abrasive and hard stone material with large production.

The function of toggle plate is to adjust the outlet of the jaw crusher to the desired size. There are two specific methods: one is to replace the support pad between the toggle plate and the body frame, and the other is to adjust the two wedges between the toggle and the body frame.

Fote Company has more than 40-year manufacturing experience, mainly engineering different types of jaw crushers including PE jaw crusher, Dodge jaw crusher, Blake type jaw crusher(double toggle jaw crushers), single toggle jaw cruhser, etc., and all of them can be customized.

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.

jaw crusher toggle plate at best price in india

jaw crusher toggle plate at best price in india

Sanwer Road Industrial Area, Indore No. 5, Saidham, Sector C, Opposite Power House Industrial Area, Sanwer Road, Sanwer Road Industrial Area, Indore - 452015, Dist. Indore, Madhya Pradesh

man injured by defective toggle plate on jaw crusher

man injured by defective toggle plate on jaw crusher

This case involves a man who was a heavy equipment operator for an excavation company. The man was working at a gravel pit loading material into a hot asphalt plant feeder. As he was on his way to park his loader at the end of his shift, the man received a call to help another crew that was having problems with a jaw crusher. A large rock had become lodged in the jaw crusher. The toggle plate of the jaw crusher was supposed to break when uncrushable material passed through the crusher. The toggle plate did not break and did not act as a safety device. The crew tried to dislodge the rock with a backhoe tooth cut from another piece of equipment and attached to a chain. The tooth then became wedged into the lower end of the jaws along with the rock. When the man tried to remove the tooth, it shot up and struck him in the jaw. The man was left unconscious and his face and neck were seriously injured. The man suffered numerous injuries including extensive head trauma, facial fractures, fractured teeth, lip and facial lacerations, and posttraumatic stress disorder.

Jaw crushers are used to crush different types of material, such as hard rocks, ore, building rubble, and glass. Jaw crushers have one fixed and one movable crushing jaw that supports the crushing plates. The crushing force of the machine is made by an eccentric shaft and is transferred to the crushing zone by a toggle plate system. If uncrushable material enters the crusher chamber, the toggle plate is supposed to break to prevent overstressing the crusher. The problem with the jaw crushers toggle plate in this case is that it should have broken when the ripper tooth got lodged in it. If this had happened, the break would have released the stored energy, so that the tooth could have been removed easily without any injury to the worker. If the toggle plate had broken as it was supposed to, the jaws of the crusher would have opened and the pressure on the jammed tooth would have been relieved. The toggle plate in this case probably was defective because its thickness may have exceeded manufacturing specifications. If the toggle plate in this case was too thick, this may have prevented it from breaking even though the tooth was lodged in the jaw and could not pass through the crusher. The jaw crusher should have been designed with a hydraulic system that provided overload protection. This type of system would have used hydraulic cylinders run by aremote control that would have crushed any material remaining in the jaws after an interruption and that provided more protection so that workers did not have to try to remove the non-crushable material manually. This type of system would have allowed the non-crushable material to go through the jaw crusher while the toggle plate would have been left intact. This type of design is helpful in preventing injuries to workers because it allows the jaw to open if there is excessive pressure caused by an overload.

how to change the toggle plate jaw crusher - the uplift

how to change the toggle plate jaw crusher - the uplift

Toggle plate is nothing but the most simple part of the Jaw Crusher, which is available in the market at a very low price and along with that it is designed in such a way that it is made by cast iron. It is the driving part of the jaw crusher and along with that it includes the three functions that are main. The three functions are the transmitting of the power, adjusting the opening of the discharge and the last one is the functioning as a safety device.

When talking about the first function of the jaw crusher which is the transmission of the power, the toggle plate is a part of the jaw crusher which is powerful in the transmission. It can support the jaw plate which is movable in nature and to the back of the frame of the body crushing force is transmitted. Then comes the adjustment of the opening of the discharge as the second function which does nothing but adjust the outlet of the jaw crusher and that could be done by simply changing the size of the toggle plate.

The changing of the size of the toggle plate according to the preference can be done in two specific ways and it will eventually adjust the outlet as well. The first method is by changing the gaskets which are located between the supporting base of the toggle plate and the frame of the body, and the other method is simply by adjusting the two wedge blocks which are located between the toggle plate and the frame of the body. The last function of the jaw crusher is nothing but the functioning as a safety device. This function is only considered when the materials or metals that are so hard in nature that their crushing is hardly possible. These materials are fed into the chamber which is called the crushing chamber then after that, the toggle plate will disconnect automatically so that it can stop the machine and avoid the breaking of the other parts of the machine.

If one is giving enough attention to its machine then a lot can be saved or achieved, and it includes the costs and time that your crews might be able to spend somewhere else. When the planning and preparation is done in the proper manner then the program of the maintenance can be made far easier for the user and along with that it is more effective in nature. More importantly, operations can meet the management of the time, savings of the cost can be obtained and safety goals by employing the strategies of good maintenance. As quoted by Bill Mancini who is a service technician at the Telsmith, Successful jaw crusher maintenance requires the right resources, the right tools and the right approach, which proves maintenance is important.

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