Lifter oil pipe burst safety mechanism

A technology of safety mechanism and lift, which is applied in the direction of hoisting equipment safety devices, lifting frames, lifting devices, etc., can solve the problems of operator injury, sudden burst, equipment damage, etc., and achieve the effect of improving the safety factor

CN104340926AInactive Publication Date: 2015-02-11QINGDAO DESIREE AUTOMOBILE INSPECTION DEVICE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-02-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

A lifter oil pipe burst safety mechanism comprises an anti-explosion flow valve, wherein the anti-explosion flow valve is mounted in an oil inlet pipe of a hydraulic cylinder of a lifter. The hydraulic cylinder provides lifting power for the lifter, the anti-explosion flow valve comprises a barrel-shaped valve body and a valve spool, an opening is formed in the inner end of the valve body, the valve spool is slidably mounted in the valve body, the inner wall of the outer end of the valve body is connected with the outer end of the valve spool through a reset spring, a plurality of primary oil penetration holes are formed in the side wall of the valve body, a secondary oil penetration hole is formed in the outer end of the valve body, and an oil-conveying pipe is arranged on the valve spool. When a pipeline for conveying hydraulic oil is burst, the valve spool slides outwards to plug the primary oil penetration holes in the side wall, the inner diameter of the oil-conveying pipe is larger than the hole diameter of the secondary oil penetration hole, the external flow speed of the hydraulic oil in the hydraulic cylinder is greatly reduced, a hydraulic rod of the hydraulic cylinder is stopped from rapidly falling, injury to operators, damage to devices and damage to lifted vehicles caused by rapid falling of the hydraulic rod of the hydraulic cylinder due to burst of the pipeline are avoided, and working safety coefficient of the lifter is furthest improved.
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Description

technical field

[0001] The invention relates to a safety protection mechanism, in particular to a safety mechanism for preventing danger caused by bursting of an oil delivery pipe of a hydraulic cylinder of a lift. Background technique

[0002] A lift is a device that lifts a vehicle and is mainly used in vehicle maintenance and three-dimensional garages. The main power source of the current lift is the hydraulic cylinder, and the power source of the hydraulic cylinder comes from the inflow and outflow of hydraulic oil. During the use of the lift, the inflow and outflow of hydraulic oil are frequent. The weight of the lifting vehicle is large, and the oil pressure in the pipeline is also high. After long-term use, the pipeline is prone to burst suddenly, and the hydraulic oil of the hydraulic cylinder leaks, causing the danger of injury to the operator, damage to the equipment, and damage to the vehicle being lifted. . Contents of the invention

[0003] The present inven...

Examples

Embodiment Construction

[0010] The lift oil pipe burst safety mechanism of the present invention, such as figure 1 As shown, it includes an explosion-proof flow valve 3 installed in the oil inlet pipe 2 provided by the hydraulic cylinder 1 of the lift. The hydraulic cylinder 1 provides lifting power for the lift. The explosion-proof flow valve 3 includes a barrel-shaped valve body 4 And the valve core 5, the inner end of the oil inlet pipe 2 is provided with a step 10 whose inner diameter is smaller than the oil inlet pipe 2, and the inner end of the valve body 4 is installed on the step 10.

[0011] The inner end of the valve body 4 is open, and the valve core 5 is slidingly installed in the valve body 4. The inner cavity of the valve body 4 outside the valve core 5 is a buffer cavity. The middle part of the side wall of the valve body 4 is provided with a plurality of main oil seepage holes 7, the outer end of the valve body 4 is provided with a secondary oil seepage hole 8, and the valve core 5 is...