Adaptive hard-rock impact rotary crushing system

Abstract

The invention belongs to coal mine tunneling and crushing machinery, in particular to an adaptive hard-rock impact rotary crushing system. The system comprises a hydraulic pump (13), a hydraulic control module (14), a hydraulic control valve (15), a hydraulic pipeline (16), a hydraulic motor (12) and a thrust hydraulic main cylinder (11); a rotating knife rest (1) is sleeved at the left end of the thrust hydraulic main cylinder (11); the thrust hydraulic main cylinder (11) and the rotating knife rest (1) are connected through a supporting pin (18); two ends of the supporting pin (18) are fixedly limited by a locking pin (17) respectively; a hob head supporting surface (1-1) and a central hole are formed on a front end face of the rotating knife rest (1); and a plurality of angle adjustable disc-shaped hobs (23) are uniformly and fixedly arranged on the hob head supporting surface (1-1) and are supported by a hob supporting bearing (21). The adaptive hard-rock impact rotary crushing system has a simple structure, light weight, low failure rate and low maintenance, and is low in cost, easy to repair and low in maintenance expense.

Description

technical field [0001] The invention belongs to coal mine excavation crushing machinery, in particular to an adaptive hard rock impact rotary crushing system. Background technique [0002] At present, coal is still the main energy source in our country. In coal mining, the excavation task of roadway is large and the excavation time is long. The mining speed of fully mechanized mining equipment directly depends on the speed of excavation. The hardness of the surface continues to increase. During the mining process of traditional roadheaders, the main shaft is often broken, the picks are damaged, and the auxiliary tunneling time is long, which has seriously affected the production of coal mines. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned technical deficiencies, and provide an adaptive hard rock impact rotary crushing system with simple structure, safety and reliability, and good crushing effect. [0004] The tec...

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Problems solved by technology

[0002] At present, coal is still the main energy source in our country. In coal mining, the excavation task of roadway is large and the excavation time is long. The mining speed of fully mechanized mining equipment directly depends on the speed of excavation. The hardness of the surface continues to increase. During the mining process of traditional roadheaders, the main shaft is often broken, the picks are damaged, and the auxiliary tunneling time is long, which has seriously affected the production of coal mines.

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