The type crusher is mainly used for crushing large particle stones, granite, limestone and construction waste. It is widely used in many departments such as mining, smelting, building materials, highway, railway, water conservancy and chemical industry. It can crush all kinds of materials with compressive strength not exceeding 320 MPa. There are four major devices in jaw fracture, namely transmission device, support device, adjustment device and safety device. Today, Xiaobian will come with you to understand the following four devices of jaw fracture. The supporting device of jaw fracture refers to its bearing part. There are 4 sets of bearings on the jaw, the eccentric shaft and the moving jaw are connected by two sets of bearings, and the eccentric shaft and the frame are connected by two sets of bearings. In the past, the sliding bearing with Babbitt alloy is generally used for large and medium-sized jaw fracture. It can bear large impact load and is relatively wear-resistant, but the transmission efficiency is low and forced lubrication is required. Small multi-purpose rolling bearing for jaw fracture has high transmission efficiency and convenient maintenance, but its impact resistance is poor. With the improvement of rolling bearing manufacturing technology, rolling bearings are mostly used in large jaw fracture. A set of gaskets with equal thickness shall be placed between the rear thrust plate support and the rear wall of the frame. By increasing or reducing the number of gasket layers, the ore discharge port of the crusher is reduced or increased. This method can be adjusted at multiple levels. The machine structure is compact and can reduce the weight of the equipment, but it must be stopped during adjustment. This adjustment method is often used in large jaw fractures. Wedge adjusting bracket Elbow plate: also known as thrust plate (material: HT150). Although it is simple, it plays a very important role. It can not only transfer power to support the lower end of the movable jaw to swing, but also the safety device of the jaw crusher. When the crushing chamber enters the difficult to crush materials, the elbow plate breaks first, so as to protect the valuable parts of the machine (such as moving jaw, body, etc.) from damage. The drawback of this approach is that the response is not sensitive enough.