CN103216487A - Membrane air chamber buffering cavity arranged in oil cylinder hinged pin shaft - Google Patents
Membrane air chamber buffering cavity arranged in oil cylinder hinged pin shaft Download PDFInfo
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- CN103216487A CN103216487A CN 201310146776 CN201310146776A CN103216487A CN 103216487 A CN103216487 A CN 103216487A CN 201310146776 CN201310146776 CN 201310146776 CN 201310146776 A CN201310146776 A CN 201310146776A CN 103216487 A CN103216487 A CN 103216487A
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- oil cylinder
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- barrier film
- membrane
- air chamber
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Abstract
A membrane air chamber buffering cavity arranged in an oil cylinder hinged pin shaft is structurally composed of a cylinder barrel (1), an oil cylinder head (2), a hinged pin shaft (3), a membrane (4), a sealed seat (5) and an inflation check valve (6). The membrane air chamber buffering cavity is characterized in that a step blind hole is arranged in the hinged pin shaft (3), the membrane (4) is tightly pressed on an intersect end face between a large blind hole and a small blind hole by the sealed seat (5), the membrane (4) and an inner hole of the sealed seat (5) can form a sealed cavity, inert gas is filled into the cavity through the inflation check valve (6), pressure of the inert gas is slightly higher than work pressure of a hydraulic oil cylinder, and the cavity can serve as a membrane air chamber energy storage. In a starting process of the oil cylinder, excess flow can push the membrane (4) to further compress the inert gas to enter the cavity at the left end of the membrane (4), and starting impact of the oil cylinder is relieved. When impact pressure in the rodless cavity of the oil cylinder reduces, fluid originally entering the cavity at the left end of the membrane (4) can flow back to the rodless cavity under the action of the compressed gas to act again to save energy.
Description
One, technical field:
The present invention relates to a kind of barrier film air chamber buffer 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 applied on all kinds of heavy machinery equipments widely with control.
Hydraulic jack is a 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 the 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.
Produce the reason that this impact has its band load high-acceleration starting and commutation, the reason of each equipment cooperation of main frame is arranged, also have in the hydraulic system each major control element in the reason of its dynamic response transient process rational Match.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 barrier film air chamber buffer 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, barrier film 4, sealing seat 5, inflation one-way valve 6; It is characterized in that: a ladder blind hole is arranged on the hinged bearing pin 3, and barrier film 4 sealed seats 5 are pressed on the crossing end face of big small blind hole; Barrier film 4 is formed a sealed volume with the endoporus of sealing seat 5, charges into inert gas by inflation one-way valve 6 in this cavity volume, and the working pressure of a little higher than hydraulic jack of pressure of inert gas makes the suitable barrier film air chamber accumulator of this cavity volume; The left end cavity volume of barrier film 4 is connected with the rodless cavity of oil cylinder by the aperture on oil cylinder head 2 and the hinged bearing pin 3.
In the start-up course of oil cylinder, because the speed of oil cylinder has produced hydraulic shock when being in speedup, the unnecessary flow that build-up of pressure impacts can promote barrier film 4 further compressed inert, enters the left end cavity volume of barrier film 4, has alleviated the starting impact of oil cylinder; And when the surge pressure in the oil cylinder rodless cavity reduced, the former fluid that enters barrier film 4 left end cavity volumes can flow back to rodless cavity under the effect that is compressed gas, and energy has been saved in acting again.
This structure is especially for long-armed equipment of concrete pump vehicle, at work because the former fixed position of protection of the dynamic load of the jib support hydraulic pressure oil cylinder that jib elasticity causes and maintenance jib is very resultful.
Four, description of drawings:
Accompanying drawing 1 is a 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, because the speed of oil cylinder has produced hydraulic shock when being in speedup, the unnecessary flow that build-up of pressure impacts can promote barrier film 4 further compressed inert, enters the left end cavity volume of barrier film 4, and the starting of having alleviated oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduced, the former fluid that enters barrier film 4 left end cavity volumes can flow back to rodless cavity under the effect that is compressed gas, and energy has been saved in acting again.
Claims (1)
1. one kind is arranged on the interior barrier film air chamber buffer volume of the hinged bearing pin of oil cylinder, and its structure is combined by cylinder barrel (1), oil cylinder head (2), hinged bearing pin (3), barrier film (4), sealing seat (5), inflation one-way valve (6); It is characterized in that: a ladder blind hole is arranged on the hinged bearing pin (3), and the sealed seat of barrier film (4) (5) is pressed on the crossing end face of big small blind hole; The endoporus of barrier film (4) and sealing seat (5) is formed a sealed volume, charges into inert gas by inflating one-way valve (6) in this cavity volume, and the working pressure of a little higher than hydraulic jack of pressure of inert gas makes the suitable barrier film air chamber accumulator of this cavity volume; The left end cavity volume of barrier film (4) is connected with the rodless cavity of oil cylinder by the aperture on oil cylinder head (2) and the hinged bearing pin (3); In the start-up course of oil cylinder, because the speed of oil cylinder has produced hydraulic shock when being in speedup, the unnecessary flow that build-up of pressure impacts can promote further compressed inert of barrier film (4), enters the left end cavity volume of barrier film (4), and the starting of having alleviated oil cylinder is impacted; And when the surge pressure in the oil cylinder rodless cavity reduced, the former fluid that enters barrier film (4) left end cavity volume can flow back to rodless cavity under the effect that is compressed gas, and energy has been saved in acting again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310146776 CN103216487A (en) | 2013-04-25 | 2013-04-25 | Membrane air chamber buffering cavity arranged in oil cylinder hinged pin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310146776 CN103216487A (en) | 2013-04-25 | 2013-04-25 | Membrane air chamber buffering cavity arranged in oil cylinder hinged pin shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216487A true CN103216487A (en) | 2013-07-24 |
Family
ID=48814555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310146776 Pending CN103216487A (en) | 2013-04-25 | 2013-04-25 | Membrane air chamber buffering cavity arranged in oil cylinder hinged pin shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103216487A (en) |
-
2013
- 2013-04-25 CN CN 201310146776 patent/CN103216487A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |