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Novel hydraulic prop

A hydraulic prop, a new type of technology, used in props/supports, mining equipment, earth-moving drilling, etc., can solve problems such as easy to cause danger, unable to support parts support, etc., to achieve the effect of improving safety

Active Publication Date: 2020-11-03
山东中煤工矿物资集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing single hydraulic prop is in use, liquid is injected into it through the three-way valve to realize the overall rise and support the coal mining area. If the three-way valve on the single hydraulic prop is used for a long time, the When the bearing capacity of the live column increases instantaneously and the three-way valve is damaged, the liquid in the cylinder overflows from the three-way valve, and the live column moves down, which can no longer support the supporting part, which is likely to cause danger In view of this, the present invention provides a new type of single hydraulic prop, which can ensure that the single hydraulic prop can be stabilized at the height of the support when the three-way valve fails, improving the safety during use

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0029] The present invention provides such Figure 1-4 A new type of hydraulic prop shown includes a cylinder body 1, a live column 2 is plugged into the cylinder body 1, and a three-way valve 3 is installed on the wall thickness of the cylinder body 1, and the wall thickness of the cylinder body 1 A vertical support device 4 is plugged into the top, and a plurality of horizontal support devices 5 are evenly distributed along the circumferential direction on the wall thickness of the bottom of the cylinder body 1; wherein,

[0030] Described vertical supporting device 4 comprises annular ring 41, and annular ring 41 is fixedly connected at the position of the outside of active post 2 near its top; Described annular ring 41 bottom is fixedly connected with a plurality of coiled tubes 42, and multiple coiled tubes 42 and A plurality of lateral support devices 5 correspond one-to-one and are located directly above the lateral support device 5. The bottom end of the coiled tube 42...

Embodiment approach

[0040] As a specific embodiment of the present invention, the thickness of the side of the bottom of the outrigger plate 6 away from the cylinder body 1 gradually increases in the direction away from the outrigger plate 6, and the top of the outrigger plate 6 is a horizontal plane;

[0041] The height of the side of the outrigger 6 that is close to the ground gradually becomes larger toward the direction away from the outrigger 6, and the top of the outrigger 6 is a horizontal plane, that is, when the outrigger 6 is pushed to move, the distance between the outrigger 6 and the ground The contact area is small, which reduces the resistance when the outrigger 6 moves, and makes the outrigger 6 move away from the cylinder body 1 quickly, thereby further increasing the overall land occupation and improving safety.

specific Embodiment approach

[0042] As a specific embodiment of the present invention, the bottom surface of the L-shaped plate 51 is on the same level as the bottom surface of the cylinder body 1, and the bottom surface of the L-shaped plate 51 has been subjected to a light-sectioning process;

[0043] When the cylinder body 1 is supported on the ground, the L-shaped plate 51 is also in contact with the ground, and at the same time, the bottom surface of the L-shaped plate 51 is polished to ensure that the L-shaped plate 51 quickly moves away from the cylinder body 1, which improves the emergency response rate .

[0044] As a specific embodiment of the present invention, the wall thickness of the cylinder body 1 is provided with a plurality of through holes along the vertical direction, and the plurality of through holes correspond to the plurality of screw rods 43 one by one, and the bottom ends of the screw rods 43 are located at the through holes. In the hole, and the bottom end of the spiral tube 42 ...

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Abstract

The invention discloses a novel hydraulic prop which comprises a cylinder body. A plunger is connected to the cylinder body in an inserted mode, a three-way valve is installed on the wall thickness ofthe cylinder body, and a vertical supporting device is connected to the wall thickness of the cylinder body in an inserted mode. According to the novel hydraulic prop, an annular ring is fixedly connected to the plunger, the bottom of the annular ring is provided with a threaded pipe and a threaded rod which are connected together in a threaded mode, after liquid is injected into the cylinder body from the three-way valve, the plunger rises to support the portion needing to be supported, and then the threaded rod is screwed to enable the bottom end of the threaded rod to extend to make contact with the top end of an L-shaped plate at the bottom. When the three-way valve breaks down, and after the liquid in the cylinder body overflows from the three-way valve, the plunger moves downwards,then the L-shaped plate at the bottom is pushed to move in the direction away from the cylinder body, after the vertical section of the L-shaped plate makes contact with a blocking frame connected tothe outer surface of the cylinder body, the L-shaped plate stops moving, then the L-shaped plate can prevent the plunger from moving downwards, and the plunger can continue to support the portion needing to be supported. Security is enhanced.

Description

technical field [0001] The invention belongs to the technical field of mining equipment, in particular to a novel hydraulic prop. Background technique [0002] The single hydraulic prop refers to a single retractable prop that uses liquid pressure to generate working resistance and realize lifting and unloading. The single hydraulic prop is mainly divided into suspension type, double telescopic suspension type, DN inner injection type and FRP single hydraulic prop; the single hydraulic prop is composed of cylinder, live column, valve and other parts; the three-purpose valve is external injection The heart of the single-type hydraulic prop, which consists of three parts: a one-way valve, an unloading valve and a safety valve. The one-way valve is used for liquid supply of the single hydraulic prop, the unloading valve is used for unloading and returning the single hydraulic prop to the post, and the safety valve ensures that the single hydraulic prop has the characteristic o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D15/44E21D15/51E21D15/54
CPCE21D15/44E21D15/50E21D15/55
Inventor 渠青
Owner 山东中煤工矿物资集团有限公司
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