Coal caving hydraulic support base with back slide device
A technology of hydraulic support and top coal caving, which is applied to pillars/supports, mining equipment, earth-moving drilling, etc. Effect
Active Publication Date: 2016-04-27
ZHENGZHOU COAL MINING MACHINERY GRP
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- Description
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Problems solved by technology
The disadvantages of the base of the above coal caving hydraulic support are: the rear sliding device placed on the side of the base occupies a large space, and the rear sliding oil cylinder is easily crushed by the gangue between the frames
Method used
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[0010] Such as figure 1 , 2 , 3, the roof coal caving hydraulic support base with the rear-moving chute device of the present invention includes a hydraulic support base 1, a rear-moving chute cylinder 2, and a scraper conveyor chute 4; the rear-moving chute cylinder 2 is arranged on Inside the column housing of the hydraulic support base 1; the rear slide oil cylinder 2 is an internal liquid injection structure, the liquid inlet is set on the piston rod, and the piston rod and the connecting seat 5 in the column housing are hinged through a pin , the cylinder body is hinged with the scraper conveyor chute 4 through the pin shaft through the circular chain 3 or the pull rod 6 .
[0011] The movement process of the present invention is as follows: the rear slide oil cylinder 2 is retracted, and the rear scraper conveyor chute 4 is pulled by the ring chain 3 or the pull rod 6 to realize the rear slide action; when the bracket is moved, the rear slide oil cylinder 2 is scraped b...
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The invention discloses a hydraulic sublevel caving coal support base with a moving-before-sliding device. The hydraulic sublevel caving coal support base comprises a hydraulic support base body, a moving-before-sliding oil cylinder and a scraping plate conveyor chute, the moving-before-sliding oil cylinder is arranged in a column nest gear box of the hydraulic support base body, the moving-before-sliding oil cylinder is of an internal liquid filling structure, a liquid inlet is arranged on a piston rod which is hinged to a connecting seat in the column nest gear box, and a cylinder body is hinged to the scraping plate conveyor chute through a round ring chain or a pull rod. The hydraulic sublevel caving coal support base has the advantages that compactness in structure is realized, space between adjacent hydraulic sublevel caving coal support bases is saved, and mutual intervention of the bases due to small gap among support frames during frame moving is prevented; the moving-before-sliding oil cylinder is arranged in the column nest gear box of the base, so that gangue among the frames cannot contact with the moving-before-sliding oil cylinder and cannot cause damage to the same. The hydraulic sublevel caving coal support base is suitable for a sublevel caving coal support with a narrow base side face space and with a space on the rear portion of a column nest.
Description
technical field [0001] The invention relates to a top-coal caving hydraulic support, in particular to a top-coal caving hydraulic support base with a rear-moving slide device. Background technique [0002] At present, in the coal mining process, the top coal caving hydraulic support needs to be moved back and slide operation. Coal caving hydraulic supports are generally equipped with a rear chute device, which is arranged on the outer side of the base. The base is connected with the chute of the scraper conveyor through the trunnion, the rear chute oil cylinder and the chute of the scraper conveyor to form a rear chute system. The disadvantages of the above-mentioned top coal caving hydraulic support base are: the rear sliding device placed on the side of the base occupies a large space, and the rear sliding oil cylinder is easily crushed by gangue between the frames. Contents of the invention [0003] The object of the present invention is to provide a top coal caving hy...
Claims
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IPC IPC(8): E21D15/51
Inventor 向家雨刘富营陈戈张定堂钱玉军孙红发
Owner ZHENGZHOU COAL MINING MACHINERY GRP