Suspending movable hydraulic support rack for advanced support in coal cutting roadway

Abstract

The suspending movable hydraulic support rack for advanced support in coal cutting roadway has the structure comprising mainly upright, side protecting beam, shoulder beam, telescopic beam, link rod, bottom shoe, upright cylinder, telescopic beam cylinder, inclined drawing cylinder, suspended hoisting mechanism and hydraulic operating mechanism, and is in portal structure. It has double upright and two-stage telescopic cylinder support, side protecting beam to protect wall, shoulder beam and telescopic beam to support roof, bi-directional telescopic beam cylinder for transverse extending, inclined drawing cylinder for contracting location, integral suspended hoisting moving, and ring I-steel beam for suspending, moving and turning. The present invention has excellent support effect, and may be used also in other kinds of mines as ideal advanced support apparatus.

Description

technical field [0001] The invention relates to a coal mining roadway advanced support suspension mobile hydraulic support, which belongs to the technical field of design and manufacture of underground coal mining support equipment. Background technique [0002] The support of the tunnel roadway in the underground comprehensive mechanized coal mining face is very important, and it is the prerequisite to ensure the normal operation and ventilation of the coal mining face. The mining vibration of the working face of the tunnel roadway will cause a large area of ​​the roadway roof to fall off, and the two sides of the roadway will also shrink inward, which directly affects the coal mining operation and personnel safety. Therefore, the support of the tunnel roadway has become a very important issue, especially in Within 20 meters in front of the fully mechanized mining face, due to the influence of the stress concentration in front of the fully mechanized mining face, the roadwa...

AI Technical Summary

Problems solved by technology

[0004] For example: the support method of multi-row wooden columns and wooden shed beams is often used manually in the tunnel roadway 20 meters in front of the fully mechanized mining face, and 5-6 rows of wooden pillars are used to support wooden shed beams every 0.8 meters. , the labor intensity of the workers is high, time-consuming and labor-intensive, affecting ventilation, and also affecting the passage of personnel and equipment movement, and it is also impossible to support the deformation of the two states of the roadway, the support effect is poor, and it is very unsafe

[0005] For example: multi-row single hydraulic props plus high-strength I-steel shed beam support method, that is, at the 20-30 meters ahead of the tunnel roadway in the fully mechanized mining face, 5-6 rows of bills are manually set every 0.7-0.8 meters Body hydraulic props, and heightened I-shaped steel shed beams, for advanced support, although some progress has been made compared with the previous ones, and the supporting force has been strengthened, but there are still many deficiencies. The labor intensity of the workers is high, which affects the passage of personnel and equipment. Bang's support is still unavailable, and the support effect and safety guarantee are not satisfactory

[0006] For example, if the arched roadway is replaced by a shed-type support, the supporting force is insufficient. Due to the structural limitations of the arched roadway, it is difficult to prevent the stress concentration in the roadway, and the support effect is not ideal. It cannot be used in trapezoidal and rectangular roadways.

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