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Uphill and downhill winch upper gradient change point grading gradient change promoting design method

A design method and winch technology, applied in earth drilling, underground transportation, transportation and packaging, etc., can solve problems such as broken rope sports cars, overruns, etc.

Inactive Publication Date: 2015-05-20
枣庄矿业(集团)付村煤业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, accidents of broken rope sports cars in inclined lanes mostly occur at the slope change point. When the mine car is running slowly from the upper level roadway to the slope change point, the force on the wire rope is very small. When the mine car reaches the slope change point and starts to run downward , the self-weight of the mine car makes the mine car slide down the track quickly. At this time, the force on the wire rope increases instantly. maximum carrying capacity, thus resulting in a broken-rope sports car accident

Method used

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  • Uphill and downhill winch upper gradient change point grading gradient change promoting design method
  • Uphill and downhill winch upper gradient change point grading gradient change promoting design method
  • Uphill and downhill winch upper gradient change point grading gradient change promoting design method

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Embodiment

[0029] 1. The construction process is simplified. For the construction of the downhill roadway, the problem of difficult construction technology in the downhill tunneling at a large angle is solved through the graded and slope-changing design method.

[0030] 2. Transportation safety is guaranteed. In the transportation link of each slope change point, by appropriately reducing the slope change angle, the instantaneous impact force of the transportation equipment on the steel wire rope is weakened, the sports car accident during the transportation is effectively contained, and the safe production of the mine is guaranteed from the design source.

[0031] (2) Economic benefit analysis

[0032] Reduce the cost of replacing wire ropes. Before adopting the step-by-step gradient technology, a working face needs to replace the steel wire rope twice during the process from excavation to coal mining production. After adopting graded slope change technology, by reducing the impact f...

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Abstract

Provided is an uphill and downhill winch upper gradient change point grading gradient change promoting design method. When the downhill gradient alpha is larger than 8 degrees and smaller than or equal to 15 degrees, secondary gradient change is carried out, construction is carried out by 6 degrees downhill, a slope is 6-8 m longer than a flat car and then construction is carried out by 15 degrees downhill. When the downhill gradient alpha is larger than 15 degrees and small than or equal to 25 degrees, third-time gradient change is carried out, construction is carried out by 6 degrees downhill, and the slope is 6-8 m longer than the flat car. The construction gradient is increased by 9 degrees, the downhill gradient reaches 15 degrees, and the slope is 6-8 m longer than the flat car. Finally, the construction gradient is increased by 10 degrees, and the designed gradient changes are achieved. By means of the scheme, due to multi-stage gradient change, instant impact caused to a steel wire rope when a small tramcar is at the gradient change point is reduced, damage to the steel wire rope is reduced, the accidents, likely to happen at the upper gradient change point, that the wire is broken and the tramcar runs are solved, and safety production of a mine is guaranteed.

Description

technical field [0001] The present invention relates to a method for designing a slope change, in particular to a method for designing a graded slope change at an ascending and descending winch for ascending and descending slopes. Background technique [0002] When the coal mine is transported underground, due to the ups and downs of the coal seam, the slope of the excavation roadway changes with the change of the coal seam slope, and the lifting link of the underground transport winch is added. According to statistics, accidents of broken rope sports cars in inclined lanes mostly occur at the slope change point. When the mine car is running slowly from the upper level roadway to the slope change point, the force on the wire rope is very small. When the mine car reaches the slope change point and starts to run downward , the self-weight of the mine car makes the mine car slide down the track quickly. At this time, the force on the wire rope increases instantly. maximum carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F13/04
Inventor 赵之合孙延斌石海波马敬龙高松芝张克伟
Owner 枣庄矿业(集团)付村煤业有限公司
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