The Small Scale Quartz Crushing Machine thrust plate (also known as the toggle plate), in addition to the special power to make the movable jaw plate swing back and forth, also has a safety insurance function, changing its length can also play a role in adjusting the mine outlet.


When the jaw crusher enters the unbreakable objects (such as iron balls, iron blocks, etc.) in the crushing cavity, the rear thrust is used as the insurance component of the crusher to protect the main parts of the equipment from damage. The rear thrust plate is generally cast as a whole. A slot or a number of small holes are made in the middle to reduce its cross-sectional strength; it can also be cast into two pieces and then linked with screws to form a combined thrust plate. When the unbreakable material is counted into the crusher cavity, the equipment is overloaded, and the huge crushing force is transmitted to the thrust plate, which causes the thrust plate to break or the screws of the combined force plate to be cut off. The machine stops working and plays a safety role.

With the continuous wear of the tooth plate, there are two main methods for adjusting the ore outlet:

1. Shim adjustment. That is, a group of gaskets is placed between the back of the support plate of the rear thrust plate and the rear wall of the rack, and the number of gaskets can be increased or decreased or its thickness can be changed to achieve the purpose of adjusting the mine discharge port. This method has a compact structure and reliable adjustment. Large and medium-sized jaw crushers are mostly adjusted by this method.

2. Quick wedge adjustment. Two wedges placed between the rear seat of the thrust plate and the frame are used to adjust the width of the ore discharge port. This method is suitable for small crushers.