Bottom-cleaning-free self-moving roof protection system for return airway of fully mechanized coal mining face of thin coal seam of coal mine

A technology for fully mechanized mining face and thin coal seam, which is applied to mine roof supports, mining equipment, earth-moving drilling, etc., and can solve the problems of unsteady drawworks, poor safety, and small adjustment height range.
CN113389583AActive Publication Date: 2021-09-14ZHENGZHOU COAL MINING MACHINERY GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU COAL MINING MACHINERY GRP
Publication Date
2021-09-14

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Abstract

The invention provides a bottom-cleaning-free self-moving roof protection system for a return airway of a fully mechanized coal mining face of a thin coal seam of a coal mine. The system comprises a conveyor tail supporting cushion frame part, a front roadway roof supporting part and a rear roadway supporting part, wherein the conveyor tail supporting cushion frame part comprises a bottom plate, at least two telescopic jacks, two guide plates, a supporting platform and a hydraulic system, the front roadway roof supporting part comprises a front hydraulic support, a front beam and a rear frame are arranged in front of and behind a top beam of the front hydraulic support respectively to cooperate with each other to support a roof, the front hydraulic support is connected with a front end of a bottom plate of a cushion frame by means of a first pushing jack and a first connector, a bottom cleaning mechanism is arranged at a front end of a base of the hydraulic support, the rear roadway supporting part comprises a shield type support, and a front portion of a base of the shield type support is connected with a rear end of the bottom plate of the cushion frame by means of a second pushing jack and a second connector. The system has the advantages of being large in height adjusting range, having self-moving capacity and obstacle removing capacity and being high in adaptability.
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Description

technical field

[0001] The invention relates to the field of coal mine equipment, in particular to a bottom cleaning-free self-moving roof protection system for a return airway of a fully mechanized mining face in a thin coal seam. Background technique

[0002] At present, the cutting holes of domestic thin coal seam fully mechanized mining face are generally arranged according to the thickness of the coal seam, and the height of the two troughs is relatively high, and the floor of the trough is generally lower than the floor of the working face. The head and tail of the machine are suspended in the trough. In order to ensure the safety and reliability of the conveyor, a pad must be installed under the head and tail of the conveyor.

[0003] Due to the fluctuation of the direction of the trough, the appearance of mine pressure, and the change of the mining height of the working face, the height of the steps between the working face and the two troughs is constantly changing,...

Claims

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