First, the construction It consists of a frame, a fixed slab, a side slab, a crushing plate (also called a slab), an eccentric shaft, a thrust plate, a toggle bracket, a pulley, a flywheel, a spring pull rod, a spring, and a movable body. Second, the working organization The utility model is composed of a crushing cavity composed of a fixed jaw plate and a movable jaw plate, and the fixed jaw plate is located at the front part of the machine body, and the movable jaw plate is fixed on the frame bearing seat by the wedge-shaped pressing block and the bolt fixed on the movable body and the eccentric shaft. The fixed plate and the movable jaw have jaw crushing teeth are made of a high-manganese steel plate, two plates having longitudinal teeth corrugations tooth, tooth arrangement requirements, the movable jaw tooth plate tooth peaks and tooth valleys just tooth plate relative to the fixed jaw . The ore is more easily broken by splitting, bending and grinding. To extend the service life of the tooth plate, the tooth plate is made up and down symmetrical so that it can be used after being worn. Third, the moving plate action mechanism There are flywheel, pulley, eccentric shaft, moving body, bearing, thrust plate and so on. The eccentric shaft is mounted on the movable body, and the two ends are respectively provided with a pulley and a flywheel, which are supported in the main bearing of the side wall of the frame. When the motor drives the eccentric shaft through the pulley, the moving jaw rotates around the eccentric shaft as the result of the movement of the thrust plate changes, so that the ore is broken. When the moving plate swings forward, the horizontal rod passes. The spring balances the inertial force generated by the moving jaw and the thrust plate, so that the moving body and the thrust plate are kept tightly coupled, and the spring assists when the moving back is retracted. Fourth, the adjustment device 1. The 600×900 compound pendulum jaw crusher is the same as the fine tooth compound pendulum jaw crusher . It is a set of gasket adjustment devices with different thicknesses. It is placed between the thrust plate support and the rear wall of the frame. Enter a set of spacers with different thicknesses. The discharge port is adjusted by increasing or decreasing the number of gaskets. 2. The 400×600 and 250×400 compound pendulum jaw crusher is a wedge block adjusting device. The back of the thrust plate support seat is formed as a slope, and the thrust plate support seat and the rear wall of the frame are placed into two wedge blocks. The method is to adjust the upper and lower positions of the two wedges between the thrust plate and the rear wall of the frame to change the size of the crusher discharge port. The method is to first loosen the spring and then rotate the nut of the suspension wedge bolt, so that the adjusting wedge rises or falls along the rear wall of the frame, thereby pushing the thrust plate and the moving raft to achieve the purpose of adjusting the discharge port. Five, insurance device Using the thrust plate (bracket) is made of ordinary cast iron material thereon to reduce its cross-sectional opening strength, when the non-broken to enter the crusher load increases due to the mineral, the thrust plate immediately break the crusher is stopped, Thereby avoiding damage to the main components of the machine. Performance of the compound pendulum jaw crusher 1. 600×900 compound pendulum jaw crusher Second, 400 × 600 compound pendulum jaw crusher ,pipe dredging vehicle,sewer dredging and cleaning vehicle Hubei Chenglongwei Special Purpose Vehicle Co., Ltd. , https://www.clw-automobile.com