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Suspended multi-telescopic hydraulic column

A hydraulic prop and suspension technology, which is applied to props/supports, mining equipment, earth-moving drilling, etc., can solve the problems of inconvenient use, labor and time-consuming, etc., so as to improve working efficiency, reduce production costs, and prevent roof accidents. Effect

Inactive Publication Date: 2011-03-09
金湖小青青机电设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the underground working face of the coal mine uses a suspended single hydraulic prop with a single cylinder structure and a maximum stroke of 1.5 meters. Due to the limitation of the minimum height of the prop itself, when the coal mining height of the working face changes, it is necessary to frequently replace the prop, which is costly. Time-consuming and inconvenient to use

Method used

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Embodiment Construction

[0010] As shown in Figure 1, the pillar includes an oil cylinder 8, a middle cylinder 6, an inner cylinder 4, a live column 3, a top cover 1, a base 11, a valve body 7 and a return spring 10, the oil cylinder 8 is installed in the base 11, and the middle cylinder 6 The bottom is installed in the oil cylinder 8, the bottom of the inner cylinder 4 is installed in the middle cylinder 6, the outside of the inner cylinder 4 is located at the outlet of the upper end of the middle cylinder 6, and the No. 1 cylinder liner 2 is installed, and the lower part of the live column 3 is installed in the inner cylinder 4. Install the No. 2 cylinder liner 5 at the outlet of the column 3 and the upper end of the inner cylinder 4, install the top cover 1 on the top of the live column 3, the return spring 10 is located in the live column 3, and the two ends of the return spring 10 are respectively connected to the top cover 1 and the base 11. A valve body 7 is installed outside the middle cylinder...

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Abstract

The invention discloses a suspended multi-telescopic hydraulic column, wherein, an oil cylinder (8) is arranged in a base (11); the lower part of a middle cylinder (6) is arranged in the oil cylinder (8); the lower part of an internal cylinder (4) is arranged in the middle cylinder (6); a first cylinder sleeve (2) is arranged outside the internal cylinder (4) at an outlet of the upper end of the middle cylinder (6); the lower part of a movable column (3) is arranged in the internal cylinder (4); a second cylinder sleeve (5) is arranged outside the movable column (3) at an outlet of the upper end of the internal cylinder (4); the top end of the movable column (3) is provided with a top cover (1); a return spring (10) is arranged in the movable column (3), and two ends of the return spring (10) are respectively connected with the top cover (1) and the base (11); and a valve body (7) is arranged outside the middle cylinder (6) at an outlet of the upper end of the oil cylinder (8). The suspended multi-telescopic hydraulic column has the advantages of long operating stroke, high strength, good stability, strong bearing capacity and wide practicability.

Description

technical field [0001] The invention relates to a support and protection device for coal mine underground work, in particular to a suspended multi-telescopic hydraulic prop. Background technique [0002] At present, the underground working face of the coal mine uses a suspended single hydraulic prop with a single cylinder structure and a maximum stroke of 1.5 meters. Due to the limitation of the minimum height of the prop itself, when the coal mining height of the working face changes, it is necessary to frequently replace the prop, which is costly. Time-consuming, very inconvenient to use. Contents of the invention [0003] The object of the present invention is to provide a suspension type multi-telescopic hydraulic prop, multi-telescopic structure, large working stroke, avoiding switching props, saving labor and time. [0004] The technical solution of the present invention is: the pillar includes an oil cylinder, a middle cylinder, an inner cylinder, a live column, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D15/44
Inventor 张晓青赵建宝杨银生李成雨
Owner 金湖小青青机电设备有限公司
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