Hydraulic support tail beam

A technology of hydraulic support and tail beam, applied in mine roof support, mining equipment, earthwork drilling and other directions, can solve the problems of inappropriate light support, large clearance of tail beam, increase the cost per ton of coal, etc. It is difficult to adjust the rack and reduce the effect of reducing the cost per ton of coal
CN101260810AInactive Publication Date: 2008-09-10李泽宇
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
李泽宇
Publication Date
2008-09-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a tail beam for a hydraulic bracket of a coal mine underground working face top slab shoring, which comprises a tail beam (3) with one end hinged on the tail of a bracket top beam (1) only by a hinged point (2) and the other end contacted with a soleplate by two lug bosses (13, 14), a top-coal caving strobe (6) which can slide along the tail beam (3), an oil cylinder (5) for driving the on-off of the strobe (6) and a direction-regulating oil cylinder (9). As the tail beam is only supported by three points of the hinged point (2), the lug boss (13) and the lug boss (14), the tail beam is stably supported and free from torsion, the weight is reduced. A recess between the lug bosses (13, 14) is convenient to discharge gangue and in particular suitable for being used in uneven soleplates and working faces with more dunn bass in coal wall.
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Description

technical field

[0001] The invention relates to a sliding roof beam hydraulic support used for a coal mining working face in a coal mine and a tail beam used for the fully mechanized mining hydraulic support. Background technique

[0002] Hydraulic supports are divided into two categories: fully mechanized mining supports and sliding roof beam hydraulic supports. The background technology of the utility model is the technology and fully mechanized mining support described in "General Technical Conditions for Sliding Roof Girder Hydraulic Supports" in China's coal industry. The existing technologies in the field of sliding roof beam hydraulic support include suspension roof beam hydraulic support (Chinese Patent Application No. 88104291.9); parallel sliding roof beam hydraulic support (Chinese Patent Application No. 91200747.8). The tail beams of the above-mentioned supports are mostly made of section steel, including straight tail beams, curved tail beams, broken-line tail ...

Claims

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