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Shear groove type buffering energy-absorbing stand column for hydraulic support

A technology of hydraulic supports and shear grooves, which is applied in the directions of pillars/supports, mining equipment, earth-moving drilling, etc., can solve the problems of no buffer energy absorption mechanism and column failure.

Pending Publication Date: 2020-06-30
CHINA COAL BEIJING COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The common defect of the above-mentioned single-telescopic ordinary column, single-telescopic mechanical extension rod-type column and ordinary double-telescopic column is that there is no buffer energy-absorbing mechanism. Post failure

Method used

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  • Shear groove type buffering energy-absorbing stand column for hydraulic support
  • Shear groove type buffering energy-absorbing stand column for hydraulic support
  • Shear groove type buffering energy-absorbing stand column for hydraulic support

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Experimental program
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specific Embodiment approach

[0019] The hydraulic support of the present invention uses a shear groove type buffer energy-absorbing column, and its preferred embodiment is:

[0020] It includes a buffer energy-absorbing mechanism and a main body, and the buffer energy-absorbing mechanism is fixedly connected to the lower end of the main body by bolts;

[0021] The buffer energy-absorbing mechanism includes a cylinder bottom and a cylinder tube. A fragile energy-absorbing buffer is provided inside the cylinder tube. A gland is arranged above the vulnerable energy-absorbing buffer. The lower end of the main body is inserted into the In the cylinder tube and fixedly connected with the gland by bolts.

[0022] A guide ring and a guide sleeve are provided between the outer wall of the lower end of the main body and the inner wall of the cylinder tube, and the side edge of the upper part of the guide sleeve is connected to the upper port of the cylinder tube by bolts.

[0023] The vulnerable buffer and energy-...

specific Embodiment

[0030] Such as Figure 4 As shown, the shear groove type buffer energy-absorbing column for the hydraulic support includes a buffer energy-absorbing mechanism and a main part;

[0031] The buffer energy-absorbing mechanism and the main body are fixedly connected by bolts, which is convenient for the replacement of the buffer energy-absorbing mechanism after damage;

[0032] Such as Figure 5 As shown, the buffer energy-absorbing mechanism includes: a cylinder bottom 1 , a cylinder tube 2 , a gland 3 , a guide ring 4 and a guide sleeve 5 . Wherein, the inside of the cylinder tube is an annular boss structure. When high pressure suddenly comes from the top of the mine, the main part of the column transmits the pressure to the gland 3, and the gland 3 shears and destroys the annular boss inside the cylinder tube 2. When the boss inside the cylinder tube 2 is sheared and destroyed, the energy transmitted by the main part of the column will be absorbed, thereby playing a role in...

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PUM

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Abstract

The invention discloses a shear groove type buffering energy-absorbing stand column for a hydraulic support. The shear groove type buffering energy-absorbing stand column for the hydraulic support comprises a buffering energy-absorbing mechanism and a body portion. The buffering and energy-absorbing mechanism comprises a cylinder bottom and a cylinder pipe. A damageable buffering and energy-absorbing piece is arranged in the cylinder pipe. A gland is arranged above the damageable buffering and energy-absorbing piece. The lower end of the body portion is inserted into the cylinder pipe and fixedly connected with the gland through bolts. A guide ring and a guide sleeve are arranged between the outer wall of the lower end of the body portion and the inner wall of the cylinder pipe. The damageable buffering and energy-absorbing piece is an annular boss or a spiral boss. The annular boss can be of a integrated type or two-piece type or three-piece type structure. The spiral boss can be of arectangular threaded structure. The damageable buffering and energy-absorbing piece and the cylinder pipe can be of an integrated structure or split type independent structure. According to the sheargroove type buffering energy-absorbing stand column for the hydraulic support, energy absorbing can be conducted through mechanical damage to achieve a buffering function on the stand column of the hydraulic support, and therefore the body structure of the stand column cannot be damaged.

Description

technical field [0001] The invention relates to a hydraulic support column for coal mines, in particular to a shear groove type buffer energy-absorbing column for a hydraulic support. Background technique [0002] During the use of the hydraulic support, sudden pressure from the mine roof often occurs, and the safety valve of the column fails to open in time or normally, causing the column to rise or even explode. The column fails due to sudden mine pressure, which can damage the equipment and affect the coal mining speed, or endanger the lives of personnel and cause major safety accidents. [0003] At present, the relatively mature columns mainly include single telescopic ordinary columns (see attached figure 1 ), single telescopic mechanical extension rod column (see attached figure 2 ), ordinary double telescopic column (see attached image 3 )Wait. [0004] The common defect of the above-mentioned single-telescopic ordinary column, single-telescopic mechanical exten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D15/44E21D15/51
CPCE21D15/44E21D15/50
Inventor 李建忠李井西王朝昀钱洋喜孙如钢张宏升王君豪杜桂丽王晶华武目扩
Owner CHINA COAL BEIJING COAL MINING MACHINERY