CN203230666U - Gas chamber elastic buffering cavity arranged on oil cylinder head - Google Patents
Gas chamber elastic buffering cavity arranged on oil cylinder head Download PDFInfo
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- CN203230666U CN203230666U CN 201320158093 CN201320158093U CN203230666U CN 203230666 U CN203230666 U CN 203230666U CN 201320158093 CN201320158093 CN 201320158093 CN 201320158093 U CN201320158093 U CN 201320158093U CN 203230666 U CN203230666 U CN 203230666U
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- oil cylinder
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Abstract
A gas chamber elastic buffering cavity arranged on an oil cylinder head is structurally composed of a blind nut 1, a cylinder barrel 2, a diaphragm 3, an inflating check valve 4 and the oil cylinder head 5. The gas chamber elastic buffering cavity is characterized in that a step blind hole is formed in the end of the oil cylinder head 5 facing the cylinder barrel 2, a large hole is an inner threaded hole, the blind nut 1 presses the diaphragm 3 on the end face where the small blind hole and the large threaded hole intersect, and the diaphragm 3 and the small blind hole form an airtight cavity. The cavity is fully inflated with inert gas through the inflating check valve 4, the pressure of the inert gas is slightly higher than the oil cylinder working pressure, and the left end face of the diaphragm 3 is communicated with a rodless cavity of an oil cylinder through a small hole in the blind nut 1. The gas chamber elastic buffering cavity arranged on the oil cylinder head is equivalent to an air bag energy storage device arranged on the oil cylinder head 5. In a starting process of the oil cylinder, when the pressure of redundant flow is higher than the gas pressure in the cavity at the right end of the diaphragm 3, the redundant flow pushes the diaphragm 3 to compress the inert gas and enters the cavity between the diaphragm 3 and the blind nut 1 in a split mode, and starting impact of the oil cylinder is relieved.
Description
One, technical field:
The present invention relates to a kind of air chamber elastic buffer cavity volume that is arranged on the oil cylinder cylinder head.
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.
A kind of air chamber elastic buffer cavity volume that is arranged on the oil cylinder cylinder head of the present invention, its structure is combined by blind nut 1, cylinder barrel 2, barrier film 3, inflation one-way valve 4 and oil cylinder head 5; It is characterized in that: be provided with a ladder blind hole towards cylinder barrel 2 ends on oil cylinder head 5, macropore is interior threaded hole, blind nut 1 with barrier film 3 be pressed on that small blind hole and major thread hole intersect end face on, make barrier film 3 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 4, the left end of barrier film 3 is by the phase that is connected with the rodless cavity of oil cylinder of the aperture on the blind nut 1; Like this, just be equivalent to be provided with an air sac type accumulator at oil cylinder head 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 3 right-hand member cavity volumes, unnecessary flow can promote barrier film 3 further compressed inert, shunting enters the cavity volume between barrier film 3 and the blind nut 1, and the starting of alleviating oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduces along with the speed of oil cylinder increases, the former fluid that enters barrier film 3 left end cavity volumes can flow back to rodless cavity under the effect of compressed inert gas, and force the pressure oil that will be overflowed from relief valve originally to flow back to the rodless cavity acting again, 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 3 right-hand member cavity volumes, unnecessary flow can promote barrier film 3 further compressed inert, shunting enters the cavity volume between barrier film 3 and the blind nut 1, and the starting of alleviating oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduces along with the speed of oil cylinder increases, the former fluid that enters barrier film 3 left end cavity volumes can flow back to rodless cavity under the effect of compressed inert gas, and force the pressure oil that will be overflowed from relief valve originally to flow back to the rodless cavity acting again, saved energy.
Claims (1)
1. air chamber elastic buffer cavity volume that is arranged on the oil cylinder cylinder head, its structure is combined by blind nut (1), cylinder barrel (2), barrier film (3), inflation one-way valve (4) and oil cylinder head (5); It is characterized in that: go up towards cylinder barrel (2) end at oil cylinder head (5) and be provided with a ladder blind hole, macropore is interior threaded hole, blind nut (1) with barrier film (3) be pressed on that small blind hole and major thread hole intersect end face on, make barrier film (3) and small blind hole form an airtight cavity volume; By inflating the inert gas that one-way valve (4) has been full of a little higher than oil cylinder working pressure, the left end of barrier film (3) is by the phase that is connected with the rodless cavity of oil cylinder of the aperture on the blind nut (1) in this cavity volume; Like this, just be equivalent to be provided with an air sac type accumulator at oil cylinder head (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158093 CN203230666U (en) | 2013-04-01 | 2013-04-01 | Gas chamber elastic buffering cavity arranged on oil cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158093 CN203230666U (en) | 2013-04-01 | 2013-04-01 | Gas chamber elastic buffering cavity arranged on oil cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230666U true CN203230666U (en) | 2013-10-09 |
Family
ID=49286794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320158093 Expired - Fee Related CN203230666U (en) | 2013-04-01 | 2013-04-01 | Gas chamber elastic buffering cavity arranged on oil cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230666U (en) |
-
2013
- 2013-04-01 CN CN 201320158093 patent/CN203230666U/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 |