Movable jaw supporting mechanism and jaw crusher

Abstract

The invention provides a movable jaw supporting mechanism and a jaw crusher. The movable jaw supporting mechanism comprises a rack, an eccentric shaft erected on the rack and a movable jaw pivoted tothe eccentric shaft, wherein the eccentric shaft comprises a connecting section, eccentric sections, supporting sections, locking sections and transmission sections; the eccentric sections, the supporting sections, the locking sections and the transmission sections are sequentially and symmetrically connected to the two ends of the connecting section; two supporting parts are symmetrically arranged on the rack; the supporting section on each side is erected on the corresponding supporting part through two rack bearings; and the eccentric section on each side is provided with two movable jaw bearings used for installing the movable jaw. According to the movable jaw supporting mechanism and the jaw crusher, the bearings are additionally arranged, the supporting points of the eccentric shafton the rack and the supporting points of the movable jaw on the eccentric shaft are increased, and therefore the span of the supporting points is reduced, deformation of the eccentric shaft is reduced, the stress area of the eccentric shaft is increased, the bending moment force borne by the eccentric shaft is effectively dispersed, and the bending resistance of the eccentric shaft is improved.

Description

technical field [0001] The invention belongs to the technical field of mining machinery, and relates to a jaw crusher, in particular to a movable jaw supporting mechanism. Background technique [0002] Jaw crushers are widely used in mining, smelting, construction and many other industries due to their simple structure, reliable operation, and convenient use and maintenance. The jaw crusher is mainly composed of a frame, a fixed jaw, a movable jaw, and an eccentric shaft. The frame is a four-walled rigid frame with upper and lower openings, which is used to support the eccentric shaft and withstand the reaction force of the crushed material. It requires sufficient strength and Rigidity; the eccentric shaft is the main shaft of the crusher, which drives the movement of the movable jaw and is subjected to a huge bending moment force. It is made of high-carbon steel; a crushing cavity is formed between the fixed jaw and the movable jaw, and the movable jaw is driven by the ecce...

AI Technical Summary

Problems solved by technology

At present, the method of thickening the eccentric shaft is usually used to increase the stiffness of the eccentric shaft, but this solution will greatly increase the consumables, weight, and volume of the eccentric shaft, and the assembly space will also increase. The volume and bearing capacity of the frame need to be increased accordingly, so the manufacturing cost, weight and volume of the whole machine will increase significantly. For example, the model of a jaw crusher is usually defined by the size of its inlet, reflecting its Processing capacity, when the size of the inlet of the jaw crusher is 600*900, the weight of the whole machine is 16T, and when the size of the inlet is only increased to 750*1060, the weight of the whole machine rises to 28T

Therefore, increasing the stiffness and strength of the eccentric shaft by thickening the eccentric shaft will greatly increase the weight and volume of the whole machine, and greatly increase the cost of manufacturing, assembly, and transportation.

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