Roadway rock burst energy absorption type protection device
A protection device, the technology of impact ground pressure, applied in the direction of measuring device, mechanical measuring device, using mechanical device, etc., can solve problems such as inability to effectively protect the safety of workers and equipment, damage to U-shaped brackets, and hazards to workers.
Active Publication Date: 2020-12-11
SHANDONG PROVINCIAL COAL GEOLOGICAL PLANNING EXPLORATION & RES INST
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Problems solved by technology
However, when a large impact occurs, because the existing U-shaped bracket does not have a shock-absorbing device, when a large impact ground pressure occurs, it is easy to cause damage to the U-shaped bracket, causing harm to the staff, so the work cannot be effectively guaranteed. Safety of personnel and equipment
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[0016] Such as Figure 1-2 As shown, it is a roadway impact ground pressure energy-absorbing protective device disclosed in the present invention, which includes a U-shaped bracket 1, and the inner cavity of the bracket 1 is provided with an energy-absorbing device 2 and a protective device 3. The protective device 3 includes a protective wall 31, The top plate 32 and the supporting hydraulic cylinder 33, the cross section of the top plate 32 is in the shape of a semi-arc, the two ends of the top plate 32 are fixedly connected with sliding blocks 34, there are two protective walls 31 and both are inverted L-shaped, the two protective walls 31 are arranged in parallel, the top plate 32 is slidably connected between the two protective walls 31, the sliding block 34 at both ends of the top plate 32 is engaged with the upper end of the protective wall 31, the lower end surface of the sliding block 34 is fixedly connected with guide posts 35 at equal intervals, and the energy absorb...
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The invention relates to a roadway rock burst energy absorption type protection device, and belongs to the technical field of rock burst protection devices. The protection device comprises a U-shapedbracket, and energy absorption devices and a protection device body are arranged in an inner cavity of the bracket; the protection device body comprises two protection walls which are arranged in parallel, a top plate and a supporting hydraulic cylinder, wherein the cross section of the top plate is semi-arc-shaped, a sliding block is fixedly connected to the two ends of the top plate, the slidingblock is slidably connected with the inner walls of the two protection walls, and guide columns are fixedly connected to the lower end faces of the sliding block at equal intervals; and the energy absorption devices comprise compression springs and supporting sleeves, wherein the compression springs are arranged on the guide columns in a sleeving mode, the two ends of the compression springs arefixedly connected with the lower end face of the sliding block and the upper end faces of the supporting sleeves correspondingly, and sliding holes in sliding fit with the guide columns are formed inthe upper end face of the supporting sleeves. According to the protection device, the compression springs play a role in supporting the top plate, and when the top plate is impacted to move downwards,impact energy is converted into potential energy of the springs, so that the purpose of absorbing the impact energy is achieved.
Description
technical field [0001] The invention relates to the technical field of rock burst protection devices, in particular to a roadway rock burst energy-absorbing protection device. Background technique [0002] Coal in my country is mainly mined underground, and roadways need to be dug underground. Roadways are passages drilled between the surface and the ore body for ore transportation, ventilation, drainage, and pedestrians. Sudden damage occurs in surrounding rock, which is called rock burst. Rockburst is a major risk factor in the coal mining process, which not only causes losses to the production of enterprises, but also seriously threatens the safety of workers. Therefore, in order to avoid danger, the inner cavity of the roadway needs to be equipped with supporting devices. U-shaped steel frames are usually used to support the roadway. U-shaped steel frames are suitable for roadways with long service time and unstable surrounding rock. However, when a large impact occurs...
Claims
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IPC IPC(8): E21D15/44E21D15/02E21D15/00E21D17/01E21D17/00E21D17/10G01B5/02
CPCE21D15/44E21D15/02E21D15/002E21D17/01E21D17/00E21D17/10G01B5/02
Inventor 李小彦孙德全张业智张虎黄春慧李桥桥苏怀瑞
Owner SHANDONG PROVINCIAL COAL GEOLOGICAL PLANNING EXPLORATION & RES INST