Automatic bracket moving control method and bracket

Abstract

The invention discloses an automatic bracket moving control method and a bracket and belongs to the technical field of brackets. The automatic bracket moving control method and the bracket are designed to solve the problem that as for an existing bracket moving method, roof fall in front of a bracket and coal wall caving are prone to occurring. According to the automatic bracket moving control method, a pushing rod of a pushing and moving oil cylinder is retracted while a telescopic beam is retracted, and the bracket moves in the opposite direction to the telescopic beam retracting direction. The bracket comprises the telescopic beam and the pushing and moving oil cylinder; a flow sensor is arranged on an oil cylinder hydraulic pipeline of the telescopic beam; a flow sensor is arranged on an oil cylinder hydraulic pipeline of the pushing and moving oil cylinder; and a travel sensor is arranged in the pushing and moving oil cylinder. According to the automatic bracket moving control method and the bracket, the vacancy period when a roof and the coal wall do not have supporting of the bracket is shortened, and roof fall in front of the bracket and coal wall caving can be effectively prevented.

Description

technical field [0001] The present invention relates to the technical field of racks, in particular to an automatic rack shift control method and a rack for implementing the automatic rack shift control method. Background technique [0002] During the coal mining operation, the support needs to move forward along the working face from time to time. During the moving process of the support, structures such as the side guard and the telescopic beam need to move or swing, and the push cylinder also needs to expand and contract. Specifically, such as figure 1 As shown, the bracket is in the initial position, and the side guard 4 is retracted to the set position; as figure 2 Shown, retract the telescopic beam 1 to set distance then. [0003] The moving oil cylinder of the existing support, the telescopic beam oil cylinder, the column oil cylinder and the side guard oil cylinder are all independently controlled and run independently. When the bracket needs to move forward, th...

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Problems solved by technology

[0004] The independent structure of each component in the bracket causes only one structure to move at the same time, and the other structures are in a static state, which in turn leads to a long time-consuming process of moving the entire bracket; when the coal at the top plate 7 and the coal wall 5 is relatively loose, A long vacancy period (the time period during which the roof 7 and / or coal wall 5 is exposed) will easily lead to roof caving and coal wall slabs.

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