CN203230657U - Gas chamber cushioning chamber arranged on piston rod of hydraulic cylinder - Google Patents
Gas chamber cushioning chamber arranged on piston rod of hydraulic cylinder Download PDFInfo
- Publication number
- CN203230657U CN203230657U CN 201320153961 CN201320153961U CN203230657U CN 203230657 U CN203230657 U CN 203230657U CN 201320153961 CN201320153961 CN 201320153961 CN 201320153961 U CN201320153961 U CN 201320153961U CN 203230657 U CN203230657 U CN 203230657U
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- chamber
- piston rod
- hydraulic cylinder
- diaphragm
- oil cylinder
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- Expired - Fee Related
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Abstract
A gas chamber cushioning chamber arranged on a piston rod of a hydraulic cylinder is composed of a cylinder barrel 1, a screw plug 2, a hydraulic cylinder piston 3, a diaphragm 4, the piston rod 5 and an inflation check valve 6. The gas chamber cushioning chamber is characterized in that a stepped blind hole is formed in the left end of the piston rod 5, a large hole is a threaded hole, and the diaphragm 4 is tightly pressed on the end face where the small blind hole and the large threaded hole are intersected through the screw plug 2, so that the diaphragm 4 and the small blind hole form an airtight chamber; the chamber is filled with inert gases with the pressure slightly higher than the working pressure of the hydraulic cylinder through the inflation check valve 6, and the left end of the diaphragm 4 is communicated with a rodless cavity of the hydraulic cylinder through a small hole formed in the screw plug 2, that is, an air bag accumulator is disposed on the piston rod 5. According to the gas chamber cushioning chamber, in the starting process of the hydraulic cylinder, when the pressure of surplus flow is higher than that of the gases in the chamber at the right end of the diaphragm 4, the diaphragm 4 is pushed to compress the inert gases, branch flow enters the chamber between the diaphragm 4 and the screw plug 2, and the starting pressure impact on the hydraulic cylinder is relieved.
Description
One, technical field:
The present invention relates to a kind of air chamber buffer volume that is arranged on the oil cylinder piston bar.
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.
The present invention is a kind of air chamber buffer volume that is arranged on the oil cylinder piston bar, and its structure is combined by cylinder barrel 1, plug screw 2, oil cylinder piston 3, barrier film 4, piston rod 5 and inflation one-way valve 6; It is characterized in that: the left end at piston rod 5 is provided with a ladder blind hole, and macropore is interior threaded hole; Plug screw 2 with barrier film 4 be pressed on that small blind hole and major thread hole intersect end face on, make barrier film 4 and small blind hole form an airtight cavity volume; Be full of the inert gas of a little higher than oil cylinder working pressure in this cavity volume by inflation one-way valve 6, the left end of barrier film 4 is connected with the rodless cavity of oil cylinder by the aperture on the plug screw 2; Like this, just be equivalent to be provided with an air sac type accumulator at piston rod 5.
The present invention is in the start-up course of oil cylinder, the speed of oil cylinder is by static speedup, unnecessary flow will inevitably make the pressure in the oil cylinder rodless cavity press rising rapidly, gas pressure in its pressure is higher than barrier film 4 right-hand member cavity volumes, unnecessary flow can promote barrier film 4 further compressed inert, shunting enters the cavity volume between barrier film 4 and the plug screw 2, and the starting of alleviating oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduced along with the speed of oil cylinder increases, the former fluid that enters barrier film 4 left end cavity volumes can flow back to rodless cavity and acting under the effect of compressed inert gas, had saved energy.
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 speed of oil cylinder is by static speedup, unnecessary flow will inevitably make the pressure in the oil cylinder rodless cavity press rising rapidly, gas pressure in its pressure is higher than barrier film 4 right-hand member cavity volumes, unnecessary flow can promote barrier film 4 further compressed inert, shunting enters the cavity volume between barrier film 3 and the plug screw 2, and the starting of alleviating oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduced along with the speed of oil cylinder increases, the former fluid that enters barrier film 4 left end cavity volumes can flow back to rodless cavity and acting under the effect of compressed inert gas, had saved energy.
Claims (1)
1. air chamber buffer volume that is arranged on the oil cylinder piston bar, its structure is combined by cylinder barrel (1), plug screw (2), oil cylinder piston (3), barrier film (4), piston rod (5) and inflation one-way valve (6); It is characterized in that: the left end at piston rod (5) is provided with a ladder blind hole, and macropore is interior threaded hole, plug screw (2) with barrier film (4) be pressed on that small blind hole and major thread hole intersect end face on, make barrier film (4) and small blind hole form an airtight cavity volume; Be full of the inert gas of a little higher than oil cylinder working pressure in this cavity volume by inflation one-way valve (6), the left end of barrier film (4) is connected with the rodless cavity of oil cylinder by the aperture on the plug screw (2); Like this, just be equivalent to be provided with an air sac type accumulator at piston rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320153961 CN203230657U (en) | 2013-04-01 | 2013-04-01 | Gas chamber cushioning chamber arranged on piston rod of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320153961 CN203230657U (en) | 2013-04-01 | 2013-04-01 | Gas chamber cushioning chamber arranged on piston rod of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230657U true CN203230657U (en) | 2013-10-09 |
Family
ID=49286785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320153961 Expired - Fee Related CN203230657U (en) | 2013-04-01 | 2013-04-01 | Gas chamber cushioning chamber arranged on piston rod of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230657U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT515144A1 (en) * | 2013-12-23 | 2015-06-15 | Neuson Hydrotec Gmbh | Piston-cylinder unit |
| CN117470639A (en) * | 2023-12-22 | 2024-01-30 | 深圳大学 | Energy absorption buffer device and method applied to dynamic true triaxial electromagnetic Hopkinson bar |
-
2013
- 2013-04-01 CN CN 201320153961 patent/CN203230657U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT515144A1 (en) * | 2013-12-23 | 2015-06-15 | Neuson Hydrotec Gmbh | Piston-cylinder unit |
| CN117470639A (en) * | 2023-12-22 | 2024-01-30 | 深圳大学 | Energy absorption buffer device and method applied to dynamic true triaxial electromagnetic Hopkinson bar |
| CN117470639B (en) * | 2023-12-22 | 2024-04-09 | 深圳大学 | Energy absorption buffer device and method applied to dynamic true triaxial electromagnetic Hopkinson bar |
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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 |