System for preventing telescopic beam from being stuck and control method thereof

Abstract

The invention provides a system for preventing a telescopic beam from being stuck. The system comprises a top beam, a telescopic beam body, a telescopic jack, a cleaning module, a coal leakage structure, a hydraulic pipeline and a control module, wherein a cavity and a slideway are arranged in the top beam, the telescopic beam body is slidably mounted in the slideway, one end of the telescopic jack is connected with the top beam, the other end of the telescopic jack is connected with the telescopic beam body, the coal leakage structure comprises a plurality of coal leakage holes distributed in a cavity bottom cover of the top beam, the cleaning module comprises a set of nozzles which are mounted in the cavity of the top beam and directly face a contracting end of the telescopic beam body and the slideway to spray water, the set of nozzles are externally connected with a water supply pipeline, the control module comprises a support controller and a positioning device, the positioning device and a control circuit of the set of nozzles are both connected with the support controller, the positioning device is used for recognizing an action state of the telescopic beam body, and the support controller controls opening and closing of the set of nozzles according to the action state, recognized by the positioning device, of the telescopic beam body. The system can clean up sundries such as coal, mud and gangue in time and prevent the telescopic beam from being stuck.

Description

technical field [0001] The invention relates to related equipment of fully mechanized mining face in coal mines, in particular to a system and a control method for preventing telescopic beams from being jammed. Background technique [0002] The telescopic beam device is an important mechanism for the hydraulic support of the coal mine fully mechanized mining face. When the shearer passes through, the telescopic beam can be extended in time to support the roof (especially the broken roof) in time and prevent the top gangue from escaping. fall, affecting the advancement of the working face. [0003] At present, the commonly used telescopic beams of hydraulic supports all adopt the form of internal telescopic, and a cavity and a slideway are arranged at the front of the top beam, and the telescopic beam is controlled to move along the slideway through the expansion and contraction of the telescopic jack. During the telescopic process, some coal, mud, gangue, etc. can easily en...

AI Technical Summary

Problems solved by technology

During the telescopic process, some coal, mud, gangue, etc. can easily enter the cavity at the front of the top beam. When a certain amount accumulates, the clips of the telescopic beam cannot be received. There is no suitable way to clean it. The only way to clean it is to dismantle the telescopic beam and clean it manually. After installation, the underground operation is labor-intensive, time-consuming and labor-intensive

[0004] The application number is 201920398819.6, and the title of the invention is: A rolling mechanism to prevent telescopic beams from snapping discloses a scheme in which a fixed box is arranged symmetrically on the outside of the top beam near the end plate of the top beam. The rolling elements extending into the top beam prevent the telescopic beam from contacting the end plate of the top beam when moving. This scheme can facilitate the movement of the telescopic beam inside the top beam to a certain extent. The existing problem is that when the front part of the top beam When coal, mud, gangue, etc. accumulate in the cavity, it will still be difficult to recover the clamping of the telescopic beam

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