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       As we all know, the earliest R & D and application of jaw crushers has a history of more than 150 years. China began to imitate the production of compound pendulum jaw crushers in the early 1950s, and it is widely used in many fields such as mining, smelting, building materials, highways, railways, water conservancy and chemical industry. Knife "position.

        Sanming Heavy Industry, a subsidiary of Chongqing Longjian Industrial Group, has continuously developed and improved the jaw crusher. After several generations of technology introduction and design improvement, the main production and sales models are PE jaw crusher series and JC European version jaw crusher series. . After a long period of market application, these series of jawbreakers have been recognized by the mining industry.

        At the same time, in order to correctly standardize the use method of jaw crusher and effectively improve the work efficiency and production cost of jaw crusher, the research summary of Sanming Heavy Industry under Chongqing Longjian Industrial Group, the method of extending the life of jaw crusher crushing plate:

        1. Fine design and material selection: the design of the crushing plate tooth peak to tooth valley of the moving and fixed jaws is used to enhance the bending effect of the equipment in addition to the squeezing effect during crushing, so that the materials are more easily broken. At the same time, the material of the crushing plate can be white cast iron. In order to improve the service life of the crushing plate, it is better to use manganese steel containing more than 12% manganese. From the overall consideration of service life and cost, ZGMn13 has a longer service life and lower cost than white cast iron.

        2. Effective assembly: Sanming Heavy Industry, a subsidiary of Chongqing Longjian Industrial Group, proposed that when the crushing plate is assembled, the crushing plate is firmly attached to the jaw plate, and soft metal (such as lead, zinc, etc.) is used as a gasket to cushion the two And tighten with bolts, so as to avoid the phenomenon of loosening, breaking or abrasion of the crushing plate, thereby prolonging the service life of the crushing plate.

       3. Flexible use. When the crushing plate and the material directly act, the crushing force is very large, especially when crushing the material with higher hardness, it is easy to cause the bolts fixing the crushing plate to loosen, which makes the crushing plate wear and tear and generates a great noise. Even, in severe cases, the broken plate falls off or breaks to stop the equipment and affect normal production. When faced with this kind of situation, Sanming Heavy Industry, a subsidiary of Chongqing Longjian Industrial Group, can not completely solve the problem by tightening the bolts and nuts before starting the machine. It should be analyzed and used flexibly according to the actual situation on the spot Prevent the broken plate from loosening, aggravating wear and breaking, etc., thereby prolonging the service life of the broken plate.

       In summary, from the aspects of material selection, effective assembly, and flexible use, Sanming Heavy Industry of Chongqing Longjian Industrial Group has improved and perfected it, which can well extend the service life of the crushing plate of the jaw crusher, thereby improving the jaw style. The production efficiency of the crusher reduces the production cost.