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Ultrathin high-elasticity stretchable beam mechanism

A telescopic beam and high-elasticity technology, applied in mining equipment, earth square drilling, mine roof support, etc., can solve the problems of small passing space, low height of hydraulic support, increase the overall thickness of the front end of the roof beam, etc., and achieve reliable protection Effect

Pending Publication Date: 2019-03-29
CHINA COAL BEIJING COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current hydraulic support telescopic beam mechanism has certain limitations in its application: the telescopic beam is a box structure with a relatively large thickness, and the telescopic beam needs to be installed in the top beam box, so the thickness of the front end of the top beam is relatively large; the telescopic jack is installed on the The lower side of the roof beam box increases the overall thickness of the front end of the roof beam
[0006] The current conventional telescopic beam mechanism cannot be applied to the thin coal seam hydraulic support
The reason is that the height of the thin coal seam hydraulic support is low, and the space between the front end of the top beam and the support of the shearer and conveyor is small, which cannot meet the installation space of the above-mentioned telescopic mechanism

Method used

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  • Ultrathin high-elasticity stretchable beam mechanism

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specific Embodiment approach

[0019] The preferred embodiment of the ultra-thin and highly elastic telescopic beam mechanism of the present invention is:

[0020] The telescopic beam is installed into the box body of the front section of the top beam through the lip at the front end of the top beam. Two telescopic jacks are symmetrically arranged in the front section of the middle section of the top beam. The pin shaft is hinged with the ear plate group of the top beam, and the telescopic jack hinge holes on the ear plate group at the rear end of the telescopic beam are arranged at the rear of the telescopic beam.

[0021] The beam body of the telescopic beam includes a top plate, and the top plate is divided into three levels in the transverse direction. below the file.

[0022] The ear plate group at the rear end of the telescopic beam includes 4 ear plates, two ear plates form a group, symmetrically arranged in the middle of the telescopic beam, and the ear plates extend from the rear of the middle to ...

specific Embodiment

[0025] Ultra-thin and highly elastic telescopic beam mechanism suitable for fully mechanized coal mining face in thin coal seams. The installation form of the telescopic beam mechanism in the hydraulic support is as follows: figure 2 shown.

[0026] image 3 It is the assembly relationship diagram of top beam, telescopic beam and telescopic jack. The telescopic beam 3 is installed into the box body of the front section of the top beam through the lip of the front end of the top beam 1; the telescopic jack 2 is symmetrically arranged in the front section of the middle section of the top beam, the cylinder body is hinged with the ear plate group at the rear end of the telescopic beam through a pin shaft, and the piston rod is connected to the back end of the telescopic beam through a pin shaft. The top beam lug group is hinged. The expansion and retraction of the telescopic beam 2 in the box body of the top beam 1 is realized through the liquid inflow and return from the uppe...

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Abstract

The invention discloses an ultrathin high-elasticity stretchable beam mechanism. A stretchable beam is installed into a front-section box of a top beam through a lip at the front end of the top beam,two stretchable jacks are symmetrically arranged on the front section of a middle section of the top beam, cylinder bodies of the stretchable jacks are hinged to lug plate sets at the back end of thestretchable beam through pin shafts, and piston rods are hinged to top-beam lug plate sets through pin shafts. The stretchable jacks are arranged in the front-section box of the top beam, and the thickness of the front end of the top beam is reduced; the stretchable beam is composed of a top plate and attached plates, and on the premise that the strength is guaranteed, the thickness of a beam bodyis reduced; hinging holes of the stretchable jacks on the stretchable beam are formed in the back portion of the stretchable beam, and it is achieved that the stretchable jacks complete extending andretracting movement in the beam body of the top beam. The aim of in-time supporting of a thin coal seam support is achieved, and more reliable protection is provided for fully-mechanized coal miningwork.

Description

technical field [0001] The invention relates to a thin coal seam hydraulic support, in particular to an ultra-thin and highly elastic telescopic beam mechanism. Background technique [0002] With the continuous development of fully mechanized coal mining technology, the application of telescopic beam mechanism on hydraulic supports is becoming more and more common. For the fully mechanized mining face under the geological condition of the broken roof, the telescopic beam mechanism can realize the timely support of the roof and improve the support efficiency and safety of the support. With the increasing emphasis on thin coal seam mining in coal mines, the number of fully mechanized mining faces in thin coal seams has increased year by year, and the geological conditions of fully mechanized mining face have become more and more complex, and more and more cases of supports encountering broken roofs. The roof collapsed at the front end of the roof beam, which brought a huge sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/06
CPCE21D23/063
Inventor 于永胜贾一刘子华李晓倩王天华唐家鑫刘娜李杰王帅
Owner CHINA COAL BEIJING COAL MINING MACHINERY