Jaw crusher with single-shaft double-crank-rocker mechanism

Abstract

The invention discloses a jaw crusher with a single-shaft double-crank-rocker mechanism. The jaw crusher comprises a frame, a fixed jaw plate, a movable jaw plate, a front crank-rocker mechanism, a rear crank-rocker mechanism and a driving wheel, wherein, the front crank-rocker mechanism comprises a front movable jaw, a front toggle plate and an eccentric drive shaft; the rear crank-rocker mechanism comprises a rear movable jaw, a rear toggle plate and an eccentric drive shaft; the front movable jaw and the rear movable jaw are jointly pivoted with the eccentric drive shaft; one end of the front toggle plate is pivoted below the rear side of the front movable jaw, the other end of the front toggle plate is pivoted below the front side of the rear movable jaw, one end of the rear toggle plate is pivoted below the rear side of the rear movable jaw, and the other end of the rear toggle plate is pivoted with the frame; and the movable jaw plate is fixedly connected with the front movable jaw and is opposite to the fixed jaw plate to form a crushing cavity together with the fixed jaw plate. The jaw crusher has the obvious effect that horizontal movement stroke of the lower parts of the movable jaws with the main function of discharging materials is improved to a stroke with a main function of crushing so that one crusher has two-stage crushing efficacy.

Description

technical field [0001] The invention relates to the field of jaw crushers, in particular to a jaw crusher with a single-shaft double-crank rocker mechanism. Background technique [0002] Jaw crusher, commonly known as jaw crusher, is the most widely used in the market now is the compound pendulum jaw crusher, which consists of two jaw plates, the movable jaw and the fixed jaw, to form a crushing cavity, which simulates the movement of the two jaws of animals to complete material crushing Crusher for work. It is widely used in medium-sized crushing of various ores and bulk materials in mining, smelting, building materials, roads, railways, water conservancy and chemical industries. [0003] The existing jaw crushers (referred to as compound pendulum jaw crushers, the same below) have a common typical structure from a mechanical point of view, that is, they all use a crank rocker mechanism (the eccentric drive shaft is a crank, and the dynamic The jaw is the connecting rod, ...

AI Technical Summary

Problems solved by technology

Because there is always a "reduction effect" in the work of the crank from top to bottom, there is always a contradiction between the work and discharge of the lower part of the movable jaw, but in order to make the crusher more efficient (high output), the lower part of the movable jaw only needs It can be set for the main purpose of emission, and the work and emission are not compatible

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