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Vertical column and its inner pressurization hydraulic support setting load hoisting system

A lifting system and hydraulic support technology, which is applied in pillars/supports, mining equipment, earthwork drilling, etc., can solve the problems of low safety, large flow consumption of high-pressure pumps, poor operability, etc., and achieve high safety, easy operation, The effect of strong initial support

Active Publication Date: 2011-06-01
BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The flow consumption of the high-pressure pump is too large, so the flow rate of the high-pressure pump should not be too small, and the high-pressure hose 11 should not be too thin. The high-pressure hose 11 has a higher probability of explosion, lower safety, and poor operability.

Method used

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  • Vertical column and its inner pressurization hydraulic support setting load hoisting system
  • Vertical column and its inner pressurization hydraulic support setting load hoisting system
  • Vertical column and its inner pressurization hydraulic support setting load hoisting system

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specific Embodiment 2

[0017] Specific embodiment two such as image 3 Shown, be a kind of double-telescopic column, comprise two-stage cylinder barrel, be provided with above-mentioned booster cylinder in column piston 2.

[0018] The column of the present invention is not limited to the column in the above two embodiments, and may also be a multi-stage column, or a column of other structures, etc. The main inventive point is that a booster cylinder is provided in the column piston.

[0019] The initial support force lifting system of the pressurized hydraulic support in the column of the present invention, its preferred specific embodiment is as follows figure 2 , image 3 As shown, including the above-mentioned uprights. The column can be a single telescopic column (first-level column), a double-telescopic column (secondary column), or a multi-stage column.

[0020] The piston cavity and the piston rod cavity of the column are respectively connected with the oil pipe A of the rising column an...

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Abstract

upright post internal boosting hydraulic support setting load lifting system comprising the upright post has large setting load and high safety, and is favorable for operating.The invention discloses an upright post and an upright post internal boosting hydraulic support setting load lifting system. The upright post internal boosting hydraulic support setting load lifting system is characterized in that: a booster cylinder is arranged in an upright post piston; the booster cylinder comprises a piston, a piston rod cavity of the booster cylinder is communicated with a piston cavity of the upright post; and a compressed gas spring is arranged between the piston of the booster cylinder and the upright post piston. When liquid is flowed through the piston cavity of thebooster cylinder, the liquid in the piston rod cavity of the booster cylinder is flowed to the piston cavity of the upright post; and pressure is amplified so as to realize boosting because the area of the piston cavity of the booster cylinder is more than the area of the piston rod cavity. The upright post can be either a double telescopic upright post or a single telescopic upright post; and the

Description

technical field [0001] The invention relates to a mine roof support device, in particular to a column and a system for raising the initial support force of a pressurized hydraulic support in the column. Background technique [0002] At present, the pressure of the power source pumping station commonly used for hydraulic supports is mostly 31.5MPa. In order to better support the roof, there is currently a column lifting system that uses a 40-50MPa high-pressure pump and a booster cylinder to increase the initial support force of the support column. [0003] The high-pressure lifting column system of the hydraulic support in the prior art is as figure 1 As shown, a 40MPa high-pressure pump is used to supply high-pressure working medium to each support through a high-pressure hose 11. A special electromagnetic pilot valve 13 and a main valve 14 are used in the bracket to control the on-off valve 12, and the 40MPa working medium is supplied to the lower chamber of the column t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D15/44
Inventor 韦文术罗跃勇向虎李继周王伟宋艳亮
Owner BEIJING TIANMA INTELLIGENT CONTROL TECH CO LTD
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