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Locking device of hydraulic oil cylinder of hydraulic hoist

A technology for hydraulic hoists and hydraulic cylinders, applied in the direction of fluid pressure actuating devices, etc., can solve the problems of low stability and short service life of locking devices, and achieve good business prospects, long service life, and anti-slip effects.

Inactive Publication Date: 2015-12-02
CHANGZHOU HYDRAULIC COMPLETE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problems of low stability and short service life of the locking device used in the current hydraulic hoist cylinder, a locking device for hydraulic hoist with simple structure, low cost and long service life is now provided. Locking device for machine hydraulic cylinder

Method used

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  • Locking device of hydraulic oil cylinder of hydraulic hoist
  • Locking device of hydraulic oil cylinder of hydraulic hoist
  • Locking device of hydraulic oil cylinder of hydraulic hoist

Examples

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Embodiment 1

[0021] like figure 1 , 2 As shown in and 3, a locking device of a hydraulic cylinder of a hydraulic hoist is used to prevent the piston rod of the hydraulic cylinder 1 from sliding down. The locking device includes:

[0022] A locking rod 2, the locking rod 2 is slidingly arranged in the hydraulic cylinder 1, one end of the locking rod 2 is provided with a shoulder 3, and the other end is fixedly connected with the piston rod of the hydraulic cylinder 1;

[0023] The locking block 4, the locking block 4 is provided with an opening, the opening is a first through hole 5 and a second through hole 6 communicating with each other, the locking rod 2 passes through the opening of the locking block 4, when the locking rod 2 When located in the first through hole 5, the shaft shoulder 3 can pass through the locking block 4, and the locking lever 2 is in an unlocked state; when the locking lever 2 is located in the second through hole 6, the shaft shoulder 3 cannot pass through The l...

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Abstract

The invention relates to the technical field of hydraulic hoists, in particular to a locking device of a hydraulic oil cylinder of a hydraulic hoist. The locking device comprises a locking rod and a locking block. One end of the locking rod is provided with a shaft shoulder, and the other end of the locking rod is fixedly connected with a piston rod of the hydraulic oil cylinder. The locking block is provided with an opening which comprises a first through hole and a second through hole communicated with the first through hole. The locking rod penetrates through the opening of the locking block; when the locking rod is located in the first through hole, the shaft shoulder can penetrate through the locking block; when the locking rod is located in the second through hole, the shaft shoulder cannot penetrate through the locking block. According to the locking device of the hydraulic oil cylinder of the hydraulic hoist, the locking state and the unlocking state of the locking rod are switched by controlling the locking block to move up and down, the locking function is good, operation is easy, the service life is long, the locking function is stable, the hydraulic oil cylinder can be effectively prevented from sliding downwards, the safety performance of the hydraulic oil cylinder is improved, the cost is low, and the commercial prospect is wide.

Description

technical field [0001] The invention relates to the technical field of hydraulic hoists, in particular to a locking device for a hydraulic oil cylinder of a hydraulic hoist. Background technique [0002] The locking device of the existing hydraulic hoist oil cylinder relies on the cylinder side valve block of the hydraulic hoist oil cylinder to lock. Realize the unlocking and locking functions of the hydraulic hoist cylinder, but such a locking device has two disadvantages: on the one hand, the valve itself is allowed to have leakage problems, and the valve core is pushed by the compression of the spring. When the spool moves left and right in the valve body. The spool is worn to a certain extent, which increases the leakage. At the same time, the spring is also fatigued and deformed, which leads to the improper operation of the spool, which causes the locking device to fail to lock the hydraulic hoist cylinder well, resulting in the hydraulic hoist cylinder falling. On th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/26
Inventor 蔡剑峰丁玲缪凯
Owner CHANGZHOU HYDRAULIC COMPLETE EQUIP
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