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Explosion-proof valve type oil port of front telescopic sleeve hydraulic oil cylinder of dumper

A hydraulic cylinder, telescopic technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of large tanks falling on the vehicle frame, rapid increase of oil return pressure, and rapid return of oil, etc. Achieve the effect of reducing safety hazards, convenient installation and maintenance, and preventing safety accidents

Inactive Publication Date: 2016-01-13
HUBEI MAIKEYAQI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The inlet and outlet of the traditional front telescopic sleeve hydraulic cylinder of the dump truck are straight-through joints. Due to the higher requirements of the customers of the modern dump truck and the harsher working conditions, the pressure level has been raised from 16MPa to 20MPa (the test pressure is 25MPa ), the safety of the hydraulic cylinder and the hydraulic system is very important. When the hydraulic system fails or the hose line is broken, the oil in the cylinder will quickly return under the action of the external load, and the return pressure will increase rapidly. It will quickly fall on the frame of the car, causing a safety accident

Method used

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  • Explosion-proof valve type oil port of front telescopic sleeve hydraulic oil cylinder of dumper
  • Explosion-proof valve type oil port of front telescopic sleeve hydraulic oil cylinder of dumper

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Embodiment Construction

[0014] The present invention as figure 1 , 2 shown.

[0015] The explosion-proof valve oil port of the front telescopic sleeve hydraulic cylinder of the dump truck includes oil port 2, which is connected to the outer surface of the oil cylinder 1 and the oil cylinder 1, and the oil port 2 is provided with a spool 3, and the middle of the spool 3 A connecting shaft 5 is provided, and one end of the connecting shaft 5 protrudes from the valve core 3 and an adjusting nut 7 is provided outside. A cover plate 8 is provided, and the cover plate 8 becomes a telescopic movable part on the connecting shaft 5 through the spring 6; the valve core 3 is provided with a plurality of through oil passages 4, wherein the mouth of the oil passage 4 is on the plane of the cover plate 8 within the coverage area.

[0016] The spool 3 is installed in the oil port 2 through thread fit.

[0017] There are 4-8 oil channels 4 and they are evenly distributed on the valve core 3 , wherein the apertur...

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Abstract

The invention provides an explosion-proof valve type oil port of a front telescopic sleeve hydraulic oil cylinder of a dumper. A valve element is arranged in the oil port. A connecting shaft is arranged in the center of the valve element. One end of the connecting shaft stretches out of the valve element and is provided with an adjustment nut. The middle of the connecting shaft is located in the valve element and sleeved with a spring. A cover plate is arranged between the spring and the other end of the connecting shaft. The cover plate forms a telescopic movable component on the connecting shaft through the spring. Four to eight through oil ducts are formed in the valve element. Openings of the oil ducts are located in the coverage area of the plane of the cover plate. According to the explosion-proof valve type oil port of the front telescopic sleeve hydraulic oil cylinder of the dumper, the explosion-proof valve type oil port is formed through the combined action of the oil ducts, the connecting shaft, the spring and the cover plate in the valve element, in this way, even if an accident happens, the oil cylinder can be prevented from falling back or can fall back slowly, and safety accidents are avoided. A big box containing goods is prevented from falling on a crossbeam of the dumper rapidly, and thus safety accidents are avoided. By the adoption of the novel structure, potential safety hazards are reduced, and the safety coefficient of a hydraulic system is increased.

Description

technical field [0001] The invention relates to the field of dump truck parts manufacturing, in particular to an explosion-proof valve-type oil port connected to a telescopic sleeve hydraulic oil cylinder at the front of the dump truck and a hydraulic system. Background technique [0002] The inlet and outlet of the traditional front telescopic sleeve hydraulic cylinder of the dump truck are straight-through joints. Due to the higher requirements of the customers of the modern dump truck and the harsher working conditions, the pressure level has been raised from 16MPa to 20MPa (the test pressure is 25MPa ), the safety of the hydraulic cylinder and the hydraulic system is very important. When the hydraulic system fails or the hose line is broken, the oil in the cylinder will quickly return under the action of the external load, and the return pressure will increase rapidly. It will quickly fall on the frame of the car, causing a safety accident. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): F15B13/02
Inventor 朱振东张建亮黄河叶兴林
Owner HUBEI MAIKEYAQI NEW ENERGY TECH
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