Thrust plate is called toggle plate, which functions are as follows:
① Support swing jaw plate and pass the crushing force to frame back wall.
② Replacement of different thrust plate can adjust the size of discharge opening.
③ It is functioned as the safety device. When the over hardness materials or foreign matter as metal block enter into the crushing cavity, the thrust plate will be broken to protect other parts free from damage.
Thrust plat of jaw crusher is the part that has simple structure, lowest cost, easy made and replaced. It is made from gray cast iron with low strength. Its section size should pass the normal stress rather than the abnormal stress that generates from the machine overload.
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