Mining drivage shielding support for coal mine

Abstract

The invention relates to the technical field of supports, in particular to a mining drivage shielding support for coal mine. The mining drivage shielding support for coal mine comprises a base, a topbeam and a crawler device. One ends of multiple first fulcrum rods are hinged to the left side of the base, one ends of multiple second fulcrum rods are hinged to the right side of the base, the middles of the first fulcrum rods and the second fulcrum rods are hinged, the other ends of the first fulcrum rods are hinged to one ends of the second fulcrum rods above the first fulcrum rods, one ends of the second fulcrum rods are hinged to one ends of the first fulcrum rods above the second fulcrum rods, and the middles of the first fulcrum rods above the second fulcrum rods and the second fulcrumrods are hinged. The mining drivage shielding support has the advantages of being simple in structure, convenient and safe to operate, good in supporting performance, easy to apply and popularize andthe like, puking accidents can be effectively avoided, the safety of the coal mining operation is guaranteed, a roof is not likely to deviate during supporting through guide rods, first hydraulic cylinders are evenly arranged at intervals, it can be effectively avoided that several portions are stressed excessively, the top beam is not prone to deformation, and supporting is firm and safe.

Description

Technical field [0001] The invention relates to the technical field of support, in particular to a shield support for coal mining and excavation. Background technique [0002] In the coal mining process, in order to prevent roof fall accidents, it is necessary to use hydraulic supports to support the roof. Because the roof beam of the hydraulic support is rigid, the unevenness of the direct roof will cause uneven load between the two, so it is easy to cause local roof fall accidents, and even cause safety hazards of large coal mine roof fall accidents. [0003] In the prior art, some technical solutions for mining and tunneling shield support for coal mining have also appeared. For example, a Chinese patent with application number CN201310686066.6 discloses a shield support for coal mining and tunneling, including a base, a top beam, a crawler device and A first hydraulic cylinder, a plurality of second hydraulic cylinders are arranged on the top beam, and the top end of the secon...

AI Technical Summary

Problems solved by technology

[0004] This technical solution can effectively prevent the occurrence of roof fall accidents and ensure the safety of coal mining operations. However, during the process of jacking up the roof beam by the hydraulic cylinder, the force exerted by the contact between the ejector rod and the roof beam is very large, which easily deforms the ejector rod. When the top beam is supported, the position deviates and cannot be supported to the place that needs to be supported, resulting in accidents

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