CN103216493A - Piston air chamber buffering slow-release cavity arranged on oil cylinder head - Google Patents
Piston air chamber buffering slow-release cavity arranged on oil cylinder head Download PDFInfo
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- CN103216493A CN103216493A CN2013101475821A CN201310147582A CN103216493A CN 103216493 A CN103216493 A CN 103216493A CN 2013101475821 A CN2013101475821 A CN 2013101475821A CN 201310147582 A CN201310147582 A CN 201310147582A CN 103216493 A CN103216493 A CN 103216493A
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- oil cylinder
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Abstract
A piston air chamber buffering slow-release cavity arranged on an oil cylinder head is structurally composed of a screw cap (1), a cylinder barrel body (2), a piston (3), an inflation check valve (4), the oil cylinder head (5) and a one-way throttle valve (6). The piston air chamber buffering slow-release cavity is characterized in that a step blind hole is arranged at the end, facing the cylinder barrel body (2), of the oil cylinder head (5), a large hole is an internal thread hole, the piston (3) can be axially located by the piston (3), the piston (3) and a small blind hole can form a sealed cavity, inert gas with pressure slightly higher than work pressure of an oil cylinder is filled into the cavity, the left end of the piston (3) is communicated with a rodless cavity of the oil cylinder, and namely a piston air chamber energy storage is positioned on the oil cylinder head (5). In a starting process of the oil cylinder, excess flow can be distributed to enter the cavity between the piston (3) and the screw cap (1) to relieve starting impact of the oil cylinder. When impact pressure in the rodless cavity of the oil cylinder reduces, fluid can flow back into the rodless cavity gradually under the action of the compressed inert gas. Thus, energy is saved, and backflow impact is prevented.
Description
One, technical field:
The present invention relates to a kind of piston air chamber 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 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.
A kind of piston air chamber buffering slowly-releasing 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, piston 3, inflation one-way valve 4, oil cylinder head 5 and one-way throttle valve 6; It is characterized in that: be provided with a ladder blind hole towards cylinder barrel 2 ends on oil cylinder head 5, macropore is an interior threaded hole, and blind nut 1 makes piston 3 and small blind hole form an airtight cavity volume piston 3 axially locating; 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 piston 3 is connected with the rodless cavity of oil cylinder by the one-way throttle valve on the blind nut 16; Like this, just be equivalent on oil cylinder head 5, be provided with a piston air chamber accumulator.
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 piston 3 right-hand member cavity volumes, unnecessary flow can promote piston 3 further compressed inert, 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 through one-way throttle valve 6 and do work again under the effect of compressed inert gas, save 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 pump vehicle at work.
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: 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 piston 3 right-hand member cavity volumes, unnecessary flow can promote piston 3 further compressed inert, 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 through one-way throttle valve 6 and do work again under the effect of compressed inert gas, save energy, and prevented flow-reversing impingement.
Claims (1)
1. a piston air chamber 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), inflation one-way valve (4), oil cylinder head (5) and one-way throttle valve (6); 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 an interior threaded hole, and blind nut (1) makes piston (3) and small blind hole form an airtight cavity volume piston (3) axially locating; 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 piston (3) is connected with the rodless cavity of oil cylinder by the one-way throttle valve (6) on the blind nut (1); Like this, just be equivalent on oil cylinder head (5), be provided with a piston air chamber accumulator; Its working principle 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 piston (3) right-hand member cavity volume, unnecessary flow can promote further compressed inert of piston (3), 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 volume can progressively flow back to rodless cavity through one-way throttle valve (6) and do work again under the effect of compressed inert gas, save energy, and prevented flow-reversing impingement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101475821A CN103216493A (en) | 2013-04-25 | 2013-04-25 | Piston air chamber buffering slow-release cavity arranged on oil cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101475821A CN103216493A (en) | 2013-04-25 | 2013-04-25 | Piston air chamber buffering slow-release cavity arranged on oil cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216493A true CN103216493A (en) | 2013-07-24 |
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ID=48814561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101475821A Pending CN103216493A (en) | 2013-04-25 | 2013-04-25 | Piston air chamber buffering slow-release cavity arranged on oil cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103216493A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1387109A1 (en) * | 2002-07-30 | 2004-02-04 | Stabilus GmbH | Gas spring |
| TW200630551A (en) * | 2005-02-18 | 2006-09-01 | A Pro Tech Co Ltd | Pneumatic shock absorber with an ancillary air chamber |
| CN102367825A (en) * | 2011-11-04 | 2012-03-07 | 武汉工程大学 | Reversing type impact air cylinder with built-in valve |
| CN102536928A (en) * | 2011-12-26 | 2012-07-04 | 辽宁东工装备制造有限公司 | One-liquid-chamber two-gas-chamber overpressure buffer balancing device for hydraulic system |
-
2013
- 2013-04-25 CN CN2013101475821A patent/CN103216493A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1387109A1 (en) * | 2002-07-30 | 2004-02-04 | Stabilus GmbH | Gas spring |
| TW200630551A (en) * | 2005-02-18 | 2006-09-01 | A Pro Tech Co Ltd | Pneumatic shock absorber with an ancillary air chamber |
| CN102367825A (en) * | 2011-11-04 | 2012-03-07 | 武汉工程大学 | Reversing type impact air cylinder with built-in valve |
| CN102536928A (en) * | 2011-12-26 | 2012-07-04 | 辽宁东工装备制造有限公司 | One-liquid-chamber two-gas-chamber overpressure buffer balancing device for hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130724 |