CN203230676U - Air chamber and spring combined buffering and sustained-releasing cavity arranged on oil cylinder head - Google Patents
Air chamber and spring combined buffering and sustained-releasing cavity arranged on oil cylinder head Download PDFInfo
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- CN203230676U CN203230676U CN 201320213139 CN201320213139U CN203230676U CN 203230676 U CN203230676 U CN 203230676U CN 201320213139 CN201320213139 CN 201320213139 CN 201320213139 U CN201320213139 U CN 201320213139U CN 203230676 U CN203230676 U CN 203230676U
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- oil cylinder
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- piston
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Abstract
The utility model discloses an air chamber and spring combined buffering and sustained-releasing cavity arranged on an oil cylinder head. The air chamber and spring combined buffering and sustained-releasing cavity structurally comprises a blind nut 1, a cylinder barrel 2, a piston 3, a spring 4, the oil cylinder head 5, a charge one-way valve 6 and a one-way throttle valve 7 which are combined with one another. The air chamber and spring combined buffering and sustained-releasing cavity is characterized in that a stepped blind hole is formed at the end, which faces the cylinder barrel 2, of the oil cylinder head 5, and the piston 3 and a small blind hole form a cavity; the sum of the pressure of inert gas in the cavity and the pressure generated by pre-tightening spring force of the spring 4 is slightly higher than the working pressure of an oil cylinder; the left end of the piston 3 is communicated with a rodless cavity of the oil cylinder via the one-way throttle valve 7 on the blind nut 1; a combined energy storage is equivalently arranged on the oil cylinder head 5. The air chamber and spring combined buffering and sustained-releasing cavity has the advantages that redundant flow can be distributed and then flow into the cavity between the piston 3 and the blind nut 1 when the oil cylinder is started, so that starting impact on the oil cylinder can be relieved; the redundant flow can gradually flow back to the rodless cavity when the impact pressure in the rodless cavity of the oil cylinder is reduced and does work again, accordingly, energy is saved, and impact of return flow is prevented.
Description
One, technical field:
The present invention relates to a kind of air chamber spring assembly buffering slowly-releasing 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 method of energy-conservation buffering.
The present invention is a kind of air chamber spring assembly buffering slowly-releasing cavity volume that is arranged on the oil cylinder cylinder head, and its structure is combined by blind nut 1, cylinder barrel 2, piston 3, spring 4, oil cylinder head 5, inflation one-way valve 6 and one-way throttle valve 7; 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, with piston 3 axially locating and compress spring 4, makes piston 3 and small blind hole form an airtight cavity volume by blind nut 1; Be full of inert gas by inflation one-way valve 6 in this cavity volume, the preloading spring power of the pressure of inert gas and spring 4 produces a little higher than oil cylinder working pressure of pressure sum; The left end of piston 3 is connected with the rodless cavity of oil cylinder by the one-way throttle valve 7 on the blind nut 1; Like this, just be equivalent to be provided with an air chamber spring assembly accumulator at oil cylinder head 5.
The present invention is in the start-up course of oil cylinder, unnecessary flow will inevitably make the pressure in the oil cylinder rodless cavity press rising rapidly, gas pressure in it is higher than piston 3 right-hand member cavity volumes adds the pressure sum that the spring force of spring 4 produces, unnecessary flow can promote piston 3 further compressed inert and springs 4, shunting enters the cavity volume between piston 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 piston 3 left end cavity volumes can progressively flow back to rodless cavity and do work again under the effect of compressed inert gas and spring 4, save energy, and prevented the impact of return flow.
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 it is higher than piston 3 right-hand member cavity volumes adds the pressure sum that the spring force of spring 4 produces, unnecessary flow can promote piston 3 further compressed inert and springs 4, shunting enters the cavity volume between piston 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 piston 3 left end cavity volumes can progressively flow back to rodless cavity and do work again under the effect of compressed inert gas and spring 4, save energy, and prevented the impact of return flow.
Claims (1)
1. an air chamber spring assembly that is arranged on the oil cylinder cylinder head cushions the slowly-releasing cavity volume, and its structure is combined by blind nut (1), cylinder barrel (2), piston (3), spring (4), oil cylinder head (5), inflation one-way valve (6) and one-way throttle valve (7); 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, with piston 3 axially locating and compress spring (4), makes piston (3) and small blind hole form an airtight cavity volume by blind nut (1); Be full of inert gas, a little higher than oil cylinder working pressure of the pressure sum that the preloading spring power of the pressure of inert gas and spring (4) produces by inflation one-way valve (6) in this cavity volume; The left end of piston (3) is connected with the rodless cavity of oil cylinder by the one-way throttle valve (7) on the blind nut (1); Like this, just be equivalent to be provided with an air chamber spring assembly accumulator at oil cylinder head (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320213139 CN203230676U (en) | 2013-04-25 | 2013-04-25 | Air chamber and spring combined buffering and sustained-releasing cavity arranged on oil cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320213139 CN203230676U (en) | 2013-04-25 | 2013-04-25 | Air chamber and spring combined buffering and sustained-releasing cavity arranged on oil cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230676U true CN203230676U (en) | 2013-10-09 |
Family
ID=49286804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320213139 Expired - Fee Related CN203230676U (en) | 2013-04-25 | 2013-04-25 | Air chamber and spring combined buffering and sustained-releasing cavity arranged on oil cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233944A (en) * | 2013-04-25 | 2013-08-07 | 长沙理工大学 | Air chamber spring combination buffer slow-release accommodating cavity arranged on oil cylinder head |
-
2013
- 2013-04-25 CN CN 201320213139 patent/CN203230676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233944A (en) * | 2013-04-25 | 2013-08-07 | 长沙理工大学 | Air chamber spring combination buffer slow-release accommodating cavity arranged on oil cylinder head |
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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: 20140425 |