CN203230675U - Gas chamber cushion and release chamber arranged in hinged pin of hydraulic cylinder - Google Patents
Gas chamber cushion and release chamber arranged in hinged pin of hydraulic cylinder Download PDFInfo
- Publication number
- CN203230675U CN203230675U CN 201320158014 CN201320158014U CN203230675U CN 203230675 U CN203230675 U CN 203230675U CN 201320158014 CN201320158014 CN 201320158014 CN 201320158014 U CN201320158014 U CN 201320158014U CN 203230675 U CN203230675 U CN 203230675U
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- piston
- chamber
- hydraulic cylinder
- hinged pin
- oil cylinder
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Abstract
A gas chamber cushion and release chamber arranged in a hinged pin of a hydraulic cylinder is composed of a cylinder barrel 1, a hydraulic cylinder head 2, the hinged pin 3, a piston 4, a seal seat 5, an inflation one-way valve 6 and a one-way throttle valve 7. The gas chamber cushion and release chamber is characterized in that a blind hole is formed in the hinged pin 3, the piston 4 is arranged in the blind hole, the piston 4 and the seal seat 5 form a seal chamber, the chamber is filled with inert gases with the pressure identical with the working pressure of the hydraulic cylinder through the inflation check valve 6, so that the chamber serves as an air piston type release accumulator, and a left-end chamber of the piston 4 is communicated with a rodless cavity of the hydraulic cylinder through the one-way throttle valve 7 on the screw plug 2 and a small hole in the hinged pin 3. According to the gas chamber cushion and release chamber, in the starting process of the hydraulic cylinder, starting impact of the hydraulic cylinder can be relieved effectively, pressure oil to be overflowed by an overflow valve originally is forced to gradually flow back to the rodless cavity again to do work, energy is saved, and backflow impact produced by the backflow is prevented.
Description
One, technical field:
The present invention relates to a kind of air chamber buffering slowly-releasing cavity volume that is arranged in the hinged bearing pin of oil cylinder.
Two, background technique:
Along with China's industrial expansion, hydraulic transmission has been widely used on all kinds of heavy machinery equipments with control.
Hydraulic jack is topmost executive component in the Hydraulic Power Transmission System.Its performance has played very big effect to the performance of main frame.
Along with hydraulics today towards the development of high-pressure trend and speed up, the startup impact of hydraulic jack and reversing impact have brought very big hydraulic shock to main frame, have caused vibrations and the noise of main frame, very easily cause the early stage damage of hydraulic-pressure pump.Hydraulic shock causes the unnecessary consumption of energy, makes the rapid intensification of host hydraulic system, and then has reduced the viscosity of hydraulic work system medium, and the volumetric efficiency of system descends.
Producing this impact has its reason of being with the starting of load high-acceleration and commutation, and the reason of each equipment cooperation of main frame is arranged, and also has the reason that each major control element rationally mates in its dynamic response transient process in the hydraulic system.At these reasons, people have carried out a large amount of research and discussion, yet these and host work character are inherent, make that people want to take effect very little by the effort that this impact and energy consumption are improved or alleviated to more rational coupling.
At present, on all kinds of high-end hydraulic equipments, the smooth starting of hydraulic jack and energy-conservation buffering are one of difficult problems of puzzlement industry.
Three, summary of the invention:
Purpose of the present invention will be developed a kind of excellent performance exactly, and technology is reliable, the smooth starting of the hydraulic jack of energy-saving and noise-reducing and the new structure of energy-conservation buffering slowly-releasing.
The present invention is a kind of air chamber buffering slowly-releasing cavity volume that is arranged in the hinged bearing pin of oil cylinder, and its structure is combined by cylinder barrel 1, oil cylinder head 2, hinged bearing pin 3, piston 4, sealing seat 5, inflation one-way valve 6 and one-way throttle valve 7; It is characterized in that: on the hinged bearing pin 3 blind hole is arranged, piston 4 is contained in this blind hole; Piston 4 is formed a sealed volume with sealing seat 5, has been full of inert gas with hydraulic jack working pressure uniform pressure value by inflation one-way valve 6 in this cavity volume, makes the suitable air slide formula slowly-releasing accumulator of this cavity volume; The left end cavity volume of piston 4 is connected with the rodless cavity of oil cylinder by the one-way throttle valve 7 on the oil cylinder head 2 and the aperture on the hinged bearing pin 3.
In the start-up course of oil cylinder, the unnecessary flow that build-up of pressure impacts can promote piston 4 further compressed inert, and shunting enters the left end cavity volume of piston 4, and the starting of having alleviated oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduces, the former fluid that enters piston 4 left end cavity volumes can progressively flow back to rodless cavity under the effect of compressed gas, force the pressure oil that will be overflowed from relief valve originally to flow back to the rodless cavity acting again, saved energy and prevented flow-reversing impingement.
This structure is very resultful because the dynamic load of the jib support hydraulic pressure oil cylinder that jib elasticity causes is protected and kept the former fixed position of jib especially for long-armed equipment of concrete mixer class at work.
Four, description of drawings:
Accompanying drawing 1 is structure principle chart of the present invention.
Five, embodiment:
The specific embodiment of the present invention is: in the start-up course of oil cylinder, the unnecessary flow that build-up of pressure impacts can promote piston 4 further compressed inert, and shunting enters the left end cavity volume of piston 4, and the starting of having alleviated oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduces, the former fluid that enters piston 4 left end cavity volumes can progressively flow back to rodless cavity under the effect of compressed gas, force the pressure oil that will be overflowed from relief valve originally to flow back to the rodless cavity acting again, saved energy and prevented flow-reversing impingement.
Claims (1)
1. an air chamber that is arranged in the hinged bearing pin of oil cylinder cushions the slowly-releasing cavity volume, and its structure is combined by cylinder barrel (1), oil cylinder head (2), hinged bearing pin (3), piston (4), sealing seat (5), inflation one-way valve (6) and one-way throttle valve (7); It is characterized in that: hinged bearing pin has a blind hole on (3), and piston (4) is contained in this blind hole; Piston (4) and sealing seat (5) are formed a sealed volume, have been full of inert gas with hydraulic jack working pressure uniform pressure value by inflating one-way valve (6) in this cavity volume, make the suitable air slide formula slowly-releasing accumulator of this cavity volume; The left end cavity volume of piston (4) is connected with the rodless cavity of oil cylinder by the one-way throttle valve (7) on the oil cylinder head (2) and the aperture on the hinged bearing pin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158014 CN203230675U (en) | 2013-04-01 | 2013-04-01 | Gas chamber cushion and release chamber arranged in hinged pin of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158014 CN203230675U (en) | 2013-04-01 | 2013-04-01 | Gas chamber cushion and release chamber arranged in hinged pin of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230675U true CN203230675U (en) | 2013-10-09 |
Family
ID=49286803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320158014 Expired - Fee Related CN203230675U (en) | 2013-04-01 | 2013-04-01 | Gas chamber cushion and release chamber arranged in hinged pin of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230675U (en) |
-
2013
- 2013-04-01 CN CN 201320158014 patent/CN203230675U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140401 |