Jaw crusher is the most common, and also the most important mining equipment in ore dressing production base, stone production line and sand making production line. Comparing with other types of crusher, it is widely used in mining, smelting, building, highway, railway, water and chemical industry due to its advantages of large crushing ratio, simple structure, convenient repair, low production cost and high yield. Because of its special structure and working principle, jaw crusher is general used for primary crusher in ore crushing and sand making production line. The working principle of jaw crusher is “squeeze". When the materials are transferred from the feed inlet into the crushing chamber, movable jaw plate tends to attach the static jaw plate to get crushing effect. But due to the direct contact of movable jaw plate and material, movable jaw plate relatively undertakes large load. Long time moving, especially when the materials have large hardness, considerably wear jaw plate, so that jaw crusher cannot break. Thus, the material will be stuck in the crushing cavity, and affect the entire production line of work.
According to the customer reflection and their own experience, Henan Hongxing Mining Machinery Company has produced equipment with insurance parts, which can effectively protect the jaw crusher’s normal operation, improve production efficiency and create more value to customers.
The kind of crusher adopts thrust plate as insurance components to protect the important parts cannot be damaged, if the hardness of material that entering into the crushing cavity surpass equipment limitations. In general, thrust plate castings are divided into two types, but their effect is both to protect the device’s important component. One is casting iron overall; thus, holes or a groove in thrust plate can reduce the whole board section strength. The other is a board cast by two, and then links them with screws. When hardness of material exceeds the limitation, device generates overload phenomenon, then all the force will be passed to the thrust plate which leads to fracture. Thus, equipment will stop working and effectively reach protect function, reducing the damage of jaw crusher. Different requirements of the market will produce different products, only effectively meet the needs of the market can better promote the healthy and stable development of the industry.
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