In production, it is inevitable to encounter large volumes of crushed stone, metal, etc., so there are crushers. There are jaw crushers, hammer crushers, impact crushers, etc. With the rapid development of the mining industry, the mining equipment industry has gradually been driven.Operation mode of a jaw crusher is also constantly evolving.

In the past, the mining industry had not yet developed to a certain scale. The equipment generally used for crushing in the ore dressing plant, coal preparation plant and other industries was small and medium-sized. Later, due to the gradual increase in production capacity in various industries, this production capacity has not kept up with production needs. Many units and manufacturers have increasingly strong calls for large-scale crushing equipment and ore equipment, and gradually large jaw crushers have come into being.

The fixed jaw and movable jaw of the jaw crusher are equipped with lining plates, and the lining plates have teeth. It helps to crush materials. The function of the lining plate is to prevent the fixed jaw and movable jaw from wear. The two ends of the mandrel are supported by bearings, and connecting rods are installed on them. The connecting rod head and the rod body of the connecting rod are manufactured separately. The motor drives the pulley and eccentric shaft through the V-belt. A thrust plate support is installed in the groove at the lower end of the connecting rod. The front thrust plate and the rear thrust plate are supported on the support respectively, and there is a wedge iron on the top to press. There is a set of pads between the rear thrust plate and the rear support to adjust the width of the discharge port. In order to prevent the crusher from being damaged due to overload operation, the rear thrust plate is made into the weakest link during the design and calculation of parts. It will break first when overloaded to protect the bearings and other parts of the machine from damage. Usually, the rear thrust plate is made of cast iron, and holes or grooves are drilled in the middle to reduce its cross-sectional size. They will break first when overloaded. The jaw crusher crushes the material sandwiched between the movable jaw plate by periodically pressing the fixed jaw plate. It has the advantages of simple structure, easy manufacturing, reliable operation and convenient maintenance. It is widely used in various industrial sectors. The jaw crusher makes the movable jaw approach or leave the fixed jaw through the periodic swing of the movable jaw around the fixed axis, causing the ore to be squeezed, broken, bent and crushed. The crushed ore is discharged from the discharge port. According to the motion trajectory of the jaw crusher, it can be divided into simple swing jaw crusher and complex swing jaw crusher. Simple swing jaw crusher is mainly used for coarse crushing, and complex swing jaw crusher is used for medium and fine crushing.

The first jaw crusher has a history of more than 140 years. The operation mode of jaw crusher is safe and reliable, the structure is simple, and it is widely used in production.