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A thin coal seam automatic pushing control method

A control method and thin coal seam technology, which is applied to earth square drilling, mine roof support, mining equipment, etc., can solve the problems of not having public tilt adjustment function, push function, etc.

Active Publication Date: 2019-03-08
BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above-mentioned comparative documents discloses the pushing method for thin coal seams including the tilt adjustment function, the pushing function and its linkage

Method used

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  • A thin coal seam automatic pushing control method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In a certain project, there are a total of 140 supports in front of the working face, which adopt two-way coal cutting. The slides are set between the working face and the hydraulic support. Each section of the slide is connected to the telescopic rod of the hydraulic support. There are 6 shearer body Brackets, 4 end brackets at both ends, 10 brackets in the feed section, feed distance 600mm, 10-function and 8-function main valves are installed at intervals on the working surface, and the tilting jack is equipped with a lock, that is, after the tilting jack is extended The tilt jack will only retract when the tilt jack is actively retracting. The 10-function and 8-function main valves of hydraulic supports on the working face are installed at intervals, and every 10 supports form a group, and a tilting jack is installed in a group.

[0019] At the end of the working face (including the nose, the tail, and the two feed sections), the automatic frame shifting and pushing ...

Embodiment 2

[0025] In the first embodiment, the push-off at the end can also be realized through the following steps.

[0026] No. 1 rack side end push

[0027] The coal shearer runs as far as the No. 3 rack. At this time, a group operation (manual operation) starting from the No. 16 rack triggers a pushing action with a group size of 8. The pushing starts from the No. 15 rack and ends with the No. 8 rack. The push and slide target strokes decrease in turn. Pushing this time is the process of releasing the cutting section.

[0028] When the coal shearer completes the cutting and exceeds the bracket number of No. 14, the group pushing operation is performed within the range of No. 1-14 racks, and the bracket pushing process is performed according to a single round of pushing process.

[0029] No. 140 rack side end push

[0030] The shearer goes as far as rack No. 140. At this time, a group operation (manual operation) starting from rack No. 126 triggers a pushing action with a group siz...

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Abstract

Disclosed is an automatic pushing-rolling control method for a thin coal seam. A hydraulic support electrohydraulic control system with the automatic following function is adopted. A hydraulic support set is composed of a plurality of hydraulic supports. An inclination adjusting jack is designed on each hydraulic support so as to be linked with pushing-rolling actions. The three functions of inclination adjustment, linkage and multi-wheel pushing-rolling can be selected to be enabled according to site condition execution. The linkage function of the inclination adjustment action and the pushing-rolling action is achieved, and the problems of bottom pricking and floating rolling of a scraper conveyor in the thin coal seam environment are effectively solved; the front bottom pricking function of the scraper conveyor is achieved through inclination adjustment before pushing-rolling, and the problems of float coal removal and scraper conveyor floating are solved; the multi-wheel pushing-rolling action strategy is achieved, coal mining and coal transportation flow are balanced, and the problem that mining and transportation are not matched is solved; the multi-wheel pushing-rolling strategy is applied to automatic following, the problem that full-automatic mining cannot be achieved due to the fact that mining and transportation are not matched in the following process is solved, and automatic mining of the thin coal seam is achieved.

Description

technical field [0001] The invention relates to an automatic push control method for a hydraulic support group, in particular to an automatic control method for thin coal seams with the linkage function of push and tilt adjustment. Background technique [0002] Coal comprehensive mechanized mining is an important symbol of the modernization of coal mining technology. In the thin coal seam environment, due to the low mining height and small space, the size of the "three machines" of fully mechanized mining equipment should be as small as possible to meet the requirements of comprehensive mining at the working face. At the same time, the narrow stope space has brought many difficulties to equipment installation and maintenance. More importantly, it is difficult for personnel to enter and exit the working face. Human intervention to troubleshoot problems will bring a lot of labor costs and risks. Therefore, it is necessary for the working face equipment to have a high level of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D23/14
CPCE21D23/14
Inventor 魏文艳刘清姚钰鹏李首滨黄曾华牛剑峰冯银辉王旭鸣李森田成金毕东柱
Owner BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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