Mine support allowing automatic adjustment of support stiffness
A self-adjusting and self-adjusting technology, applied in pillars/supports, mining equipment, earth-moving drilling, etc., can solve problems such as impact resistance and yield effect can not meet actual needs, to improve support effect and safety, improve rigidity , the effect of improving the service life
Active Publication Date: 2017-01-25
JIANGSU ZHONGHAI HEAVY MACHINE TOOL
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Problems solved by technology
Although the above bracket does have a certain effect in practical applications, its impact resistance and displacement effect still cannot meet the actual needs
Method used
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[0055] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0056] see Figure 1 to Figure 15 , a mining support capable of automatically adjusting support stiffness, comprising a top support assembly 100, the top support assembly 100 is connected to a support column 300 through a buffer connection assembly 200, and the bottom of the support column 300 is connected to the support column 300 through a buffer support assembly 400 The base 500 is assembled and fixed.
[0057] The top support assembly 100 includes a first fixed support plate 101, a movable support plate 102, and a second fixed support plate 103, and the first fixed support plate 101 and the second fixed support plate 103 are respectively arranged on the movable support plate 102 both sides;
[0058] Both ends of the first fixed support plate 101 and the second fixed support plate 103 are fixed on the connecting seat 104;
[0059] The second fixed suppo...
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The invention discloses a mine support allowing automatic adjustment of support stiffness. The mine support has better shock resistance and energy absorption effects, and the support stiffness of the support or surrounding supports can be adjusted in real time according to multiple different local rock bursts. The mine support allowing automatic adjustment of support stiffness comprises a top support assembly, wherein the top support assembly is connected with a support column through a buffer connecting assembly, and the bottom of the support column is assembled and fixed with a base through a buffer supporting assembly. A movable support plate is supported by a high-pressure air bag and an air rod support on the top support assembly, during a rock burst, the movable support plate quickly absorbs the rock burst and yields, and the top support assembly is prevented from being directly broken. The buffer supporting assemblies between every two adjacent supports are connected through second high-pressure oil tubes, and the support stiffness of other supports connected with the shocked support can be improved instantly.
Description
technical field [0001] The invention belongs to the field of coal mine roadway support, in particular to a mining support capable of automatically adjusting support stiffness. Background technique [0002] In the process of deep mining of coal mines, one of the major dynamic disasters impacting low-pressure coal mines has caused a large number of property losses and casualties in recent years. When rock burst occurs, the damaged surrounding rock will have a violent impact on the support body, causing the load on the support body to increase suddenly, exceeding the static pressure by several times, ten times or even greater, often causing the support body to burst. Local damage, deformation or overall collapse and damage have caused serious threats to the safety of underground workers and production equipment. [0003] At present, the most widely used roadway support is U-shaped steel support, which is mostly composed of three-section, four-section or six-section arc-shaped ...
Claims
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IPC IPC(8): E21D15/02E21D15/50
CPCE21D15/02E21D15/50
Inventor 娄培杰梁书玲李成杰徐颖
Owner JIANGSU ZHONGHAI HEAVY MACHINE TOOL