A Review of Development of the Jaw Crusher

With the continuous development of modern industry, the various types of crushing equipment develop very rapidly at home and abroad. The specifications of the crushing equipment become more abundant. The crushing mechanism becomes more mature. The mere static crushing, impact free crushing and squeezing crushing have gradually developed into the high-pressure, high-energy and high-efficiency crushing with complex mechanism. This article will describe several common crushing equipments and review the development of the jaw crusher.
There has been more than 100 years’ history of the jaw crusher. Meantime, the structure of the device has gone through continuous improvement and innovation. The performance has been greatly improved, but there is no fundamental change in the basic principle which still basically belongs to the static extrusion crushing. There are more than 60 large and medium-sized enterprises to produce the jaw crushers. The jaw crushers produced by different enterprises have different characteristics, size specifications, models, performance and output. In the applications of the jaw crushers, the simple pendulum jaw crusher and the compound pendulum jaw crusher are used most widely. The manufacturing technology in recent years has gone through the three stages. The stages can be divided into the imitation of the foreign advanced equipment, improvement and self-design. At present, the domestic jaw crushers have basically reached the internationalization and have formed the product line. The update and design make the structure and performance of the equipment more rationalized and advanced. In the update and design of the compound pendulum jaw crusher, Henan Hongxing Mining Machinery appropriately reduces the hanging height of the moving jaw, increases the volume of the crushing chamber, narrows eccentricity, reduces tooth angle, installs the screw or the hydraulic adjustment device and improve the shape and materials of the liner (pad) so that the trajectory of the movable jaw is more reasonable. The operation and adjustment is more convenient and the repair cycle and service life is extended. In addition, the crushing efficiency and production capacity is significantly improved. The compound pendulum jaw crusher has significant technical characteristics after transformation.
The simple pendulum jaw crusher produced by Henan Hongxing Mining Machinery has the separated structure. The jaw crusher is connected by the screw or pin. The bearing spindle and moving jaw use the sliding bearing. The thin oil is used as the lubricant. The equipment is controlled by the hydraulic system. In order to meet the needs of the factories, mines, building materials, road construction and mineral processing, Henan Hongxing Mining Machinery continuously innovate and develop more new crushing equipments.