A two-way hydraulic jack

A two-way hydraulic and jack technology, applied in the direction of fluid pressure actuating devices, lifting devices, etc., can solve the problems of increasing mining difficulty, mining cost, inconvenience, and narrow mining space.

CN104609330BActive Publication Date: 2017-02-22巨隆液压设备(集团)有限公司

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: 巨隆液压设备(集团)有限公司
Publication Date: 2017-02-22

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Abstract

The invention discloses a bidirectional hydraulic jack. A through cavity is formed in a cylinder barrel. The two ends of the cylinder barrel are provided with a first guide sleeve and a second guide sleeve respectively. The side wall of the cylinder barrel is provided with a first connector base, a second connector base and a third connector base which are communicated with the through cavity. A first piston rod and a second piston rod are arranged in the cylinder barrel and stretch out of a middle opening in the first guide sleeve and a middle opening in the second guide sleeve respectively, a first piston and a second piston are arranged on the outer wall of the first piston rod and the outer all of the second piston rod respectively, the first piston is located between the first connector base and the second connector base in the cylinder barrel, the second piston is located between the second connector base and the third connector base, and sealing pieces are arranged between the pistons and the cylinder barrel and among the guide sleeves and the piston rods respectively. The hydraulic support top beam balance keeping device is compact in whole structure, reasonable in design, capable of achieving bidirectional hydraulic support, stable and reliable in structure in the repeated use process and high in mechanical accuracy.

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Description

technical field

[0001] The invention relates to the technical field of jacks, in particular to a two-way hydraulic jack. Background technique

[0002] The side pusher jack is a commonly used supporting device in fully mechanized mining operations. In the working process of the existing jack, one end is fixed and the other end travels, so as to carry out one-way support and one-way movement. However, due to the narrow mining space, the environment has certain restrictions, and the mining layer usually has a certain inclination. Therefore, in this case, it is very inconvenient to adopt a one-way jack to work, and it increases mining difficulty and mining cost. Contents of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention proposes a two-way hydraulic jack, which has a reasonable structural design, good integrity, and can realize two-way support.

[0004] A two-way hydraulic jack proposed by the pres...

Claims

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