Shearer with four rocker arm structure

Abstract

The invention relates to a shearer with a four rocker arm structure. The shearer comprises a machine body and rocker arm structures. Each rocker arm structure comprises a transition frame, a main vertical steering oil cylinder arranged between the transition frame and the machine body, an upper vertical steering oil cylinder arranged on an upper end of the transition frame, a lower vertical steering oil cylinder arranged at a lower end of the transition frame, an upper rocker arm arranged at the side of the transition frame, a lower rocker arm arranged at the side of the transition frame, an upper roller arranged at the side of the upper rocker arm, and a lower roller arranged at the side of the lower rocker arm; a main rotary shaft is arranged at one side of the transition frame, and the machine body is hinged to the transition frame through the main rotary shaft; and a swing articulated shaft is arranged at a lower end of the main rotary shaft, and the main vertical steering oil cylinder is hinged to the transition frame through the swing articulated shaft.

Description

technical field [0001] The invention relates to the field of coal mining machinery, in particular to a drum shearer with a four-rocker structure that is suitable for mining at large mining height working faces in coal mines. Background technique [0002] Generally, shearers have two arrangements: one is with left and right rocker arms, and the two rocker arms each drive a drum to work; the second is short-wall shearer, the whole machine has only one rocker arm, and drives a drum Work. Among them, the first method is the main method, and the second method is only suitable for special working conditions such as triangular coal mining where the length of the working face is very short. Regardless of the arrangement, the maximum cutting height that the drum can achieve is the maximum cutting height that the shearer can achieve. The shearer with two arrangements can realize the mining of most coal seams. [0003] As the requirements for high production and high efficiency of c...

AI Technical Summary

Problems solved by technology

Still take the problem of solving the problem of mining height of 8 meters as an example: this coal shearer is based on the relatively mature model with a mining height of about 6 meters, through the design of special left and right transition devices, and respectively arranged on the left and right transition devices Two rocker arms each have a drive motor, the two rocker arms work separately, do not affect each other and cooperate with each other, completely avoiding the stability of the fuselage, the traction system, the reliability of the hydraulic system, and effectively controlling the production cost and use cost Under the premise of achieving a one-time mining height of 8 meters or more

Images