Jaw crusher

Abstract

A compact and light-weight jaw crusher, in which life span of parts enduring abrasion is long, and an outlet clearance of a crushing chamber is easily adjusted, is provided. For this purpose, the jaw crusher includes a stationary jaw (3) fixedly provided at a frame (2), a movable jaw (5) which is provided to oppose the stationary jaw and attached swingably with an eccentric drive shaft (4), a movable jaw load receiving section (10) attached to the frame, and a coupling joint (23) which is a connecting member for connecting a lower portion of the movable jaw and the movable jaw load receiving section and swingably connects the lower portion of the movable jaw and the movable jaw load receiving section.

Description

technical field [0001] The invention relates to a jaw crusher, in particular to a movable tooth holding mechanism and a gap adjustment mechanism between the movable tooth and the fixed tooth. Background technique [0002] There have been various proposals regarding the structure of jaw crushers. For example, there are jaw crushers disclosed in JP-A-5-45300 and JP-A-10-249224. [0003] Figure 8 It is an explanatory diagram of a side section of a crusher disclosed in Japanese Patent Publication No. 5-45300. Inside the crusher frame 60 , the movable jaw 61 having the movable teeth 5 is hung and installed on the eccentric shaft 62 , and the fixed teeth 3 are mounted opposite to it. The lower end of the toggle 63 is freely rotatably mounted on the frame 60 of the crusher by a pin shaft 64 . On the frame 60 of the crusher, the base end of the oil cylinder 70 with the friction force clamped between the sleeve and the piston rod is installed freely to swing, and its front end is ...

AI Technical Summary

Problems solved by technology

Therefore, the toggle plate 67 is clamped. In order to maintain this situation, springs 68 and 85 are provided, so the structure is complicated. Every time the gap between the teeth is adjusted, the springs 68 and 85 must be adjusted, and the adjustment time becomes longer.

In addition, when it is mounted on a vehicle, the work space is narrowed, so adjustment work becomes difficult

[0010] In addition, an adjustment cylinder 71 is provided at the rear end of the cylinder 70. Therefore, the overall length of these cylinders becomes longer and they are arranged laterally. Therefore, Figure 8 The overall length N of the movable jaw 61 shown becomes longer, and the occupied area is large, which is inconvenient to carry

Also, since the adjustment cylinder 71 is constantly pressurized, energy is consumed

Also, there are oil leaks and it's unreliable

In order to prevent this oil leakage, it is necessary to configure a complicated hydraulic circuit, which increases the price

[0011] In the jaw crusher disclosed in Japanese Patent Application Laid-Open No. 10-249224, the toggle plate 67 is clamped as above, and in order to maintain this situation, there are springs 68 and 85. Therefore, the structure is complicated, and each tooth is adjusted. For the front clearance, the springs 68 and 85 must be adjusted, and the adjustment time becomes longer

In addition, when the vehicle is mounted, the working space is narrowed, so adjustment work becomes difficult

Moreover, during overload, the bending of the toggle plate 67 prevents damage to other parts. In this way, the operation of replacing the bent toggle plate 67 is difficult and takes a long time.

In addition, because the adjustment of the outlet clearance of the crushing chamber 6 is carried out through a set of adjustment plates 84, the adjustment takes a long time and the work efficiency is low.

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