Fully-mechanized hydraulic bracket ore drawing ellipsoid control device
A hydraulic support and control device technology, applied in ground mining, underground mining, special mining, etc., can solve problems such as hidden dangers, spontaneous combustion and fire safety in goafs, and coal loss, so as to improve recovery rate, increase adaptability, reduce Effects of spontaneous combustion accidents
Inactive Publication Date: 2013-09-18
CHINACOAL PINGSHUO GRP
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Problems solved by technology
Under the conditions of large coal seam thickness, small coal discharge step distance, gangue layer in the top coal, and poor discharge performance, it is easy to occur that the top coal has not been fully discharged, and the gangue behind the gob has reached the coal discharge port, and some The top coal is separated by brackets above, causing coal loss, and there is also a safety hazard of spontaneous combustion in the goaf
Method used
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[0013] Such as figure 1 with figure 2 As shown, the ore-drawing ellipsoid control device for fully mechanized caving hydraulic supports includes a hydraulic support 6 and a rear scraper conveyor 5, and is characterized in that it also includes an auxiliary lifting platform 4, and the auxiliary lifting platform 4 is located below the hydraulic support 6, and The outer side of the rear scraper conveyor 5 is connected; the auxiliary lifting platform 4 is composed of a box-shaped base 8, an upper supporting plate 7 and a jack 3, one end of the upper supporting plate 7 is hinged with the box-shaped base 8, and the free end is arranged below Coal retaining edge 9; said coal retaining edge 9 coincides with the inside of the corresponding box-shaped base side wall; the base of said jack 3 is hinged at the bottom of the box-shaped base, and the piston head is hinged with upper supporting plate 7.
[0014] Working process and principle
[0015] When the invention is used, when the co...
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The invention provides a fully-mechanized hydraulic bracket ore drawing ellipsoid control device, which belongs to the technical field of a fully-mechanized working surface hydraulic bracket, and mainly solves the problems that crushed coal filled in the back part of a rear scraper conveyer is remained in a goaf and a potential safety hazard of spontaneous combustion and ignition of the goaf exists. The fully-mechanized hydraulic bracket ore drawing ellipsoid control device comprises a hydraulic bracket and a rear scraper conveyer, and is characterized by further comprising an auxiliary hoisting platform which is located below the hydraulic bracket, is connected with the outer side of the rear scraper conveyer and is formed by a box-shaped base, an upper supporting plate and a jack, wherein one end of the upper supporting plate is hinged with the box-shaped base and a coal baffling edge is arranged on the lower side of a free end of the upper supporting plate; the coal baffling edge is engaged with the inner side of a corresponding side wall of the box-shaped base; a jack seat is hinged on the bottom of the box-shaped base; a piston head is hinged with the upper supporting plate. The fully-mechanized hydraulic bracket ore drawing ellipsoid control device disclosed by the invention adopts the auxiliary hoisting platform, so that top coal can be recycled at maximum, the recovery coefficient is effectively improved, and spontaneous combustion and ignition accidents of the goaf are reduced.
Description
technical field [0001] The invention belongs to the technical field of hydraulic supports of fully mechanized caving working faces, and in particular relates to a control device for ore drawing ellipsoids of fully mechanized caving hydraulic supports. Background technique [0002] At present, the following problems exist in the operation process of fully mechanized caving face in underground coal mine: [0003] (1) During the top-coal caving process, after the hydraulic support is moved, the goaf space released at the rear of the hydraulic support will be filled with the falling top-coal, which is filled at the rear of the rear scraper conveyor and has a low height The part of coal at the height of the scraper conveyor is gradually compacted during the coal gangue movement, and has no chance to flow to the scraper conveyor, which eventually causes this part of coal to stay in the goaf, which not only reduces the recovery rate, Resources are wasted, and there is a potential ...
Claims
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Inventor 赵剑刘江伟刘刚
Owner CHINACOAL PINGSHUO GRP