Rolling type auxiliary stress floating mechanism

Abstract

The invention relates to a rolling type auxiliary stress floating mechanism which comprises a lifting device, a rolling wheel device and a frame, the frame is of a vertically-through barrel-shaped structure, most of the lifting device is located in the frame, the lifting device adopts a double-outlet-rod piston cylinder, a cylinder barrel is installed in the frame, a gap is reserved between the outer wall of the cylinder barrel and the frame, and an air channel is formed in a piston rod; the upper end opening of the air channel is formed in the upper end face of the piston rod, the lower end opening of the air channel is formed in the outer cylindrical face of the piston rod and is close to the lower edge of the piston in the height direction, and the lower end opening of the air channel is partially or completely located below the piston. The hinged axis extends horizontally front and back, and a guide body protruding backwards is arranged on the lower middle portion of the roller device. By applying the invention, the normal meshing state of the walking system can be ensured even under the condition that the bottom hook of the guide sliding shoe and the walking wheel teeth are in transitional wear in a hard rock block environment, so that effective traction force is provided.

Description

Technical field [0001] The present invention involves an auxiliary stress mechanism used to coordinate with the rails of the coal mining system. It can provide a constant downward force for the walking system and keep the walking mechanism in a normal meshing state. Background technique [0002] When the coal mining machine -oriented skate boots encounter a large number of hard and difficult to break the rock environment, the walking system is easy to fail in advance, especially the directional skate boot bottom hook hardening layer is quickly worn, while the size of the guidance skate -oriented frame is worn too much after the size is too large. It is impossible to ensure that the normal mesh of the walking wheel and the sales row will eventually lead to the weakening of the climbing capacity of the coal mining machine and seriously affect mining. Especially the working surface of the inclination angle above 20 ° will seriously affect or restrict mining. [0003] In response to ...

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Problems solved by technology

[0004] However, due to the complexity of the on-site working conditions, no matter which of the above-mentioned improvement schemes can completely avoid the influence of rock dust and hard rock blocks on the walking system in the actual practice process, the problem of wear on the guide shoes and road wheels is still relatively serious. protrude

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