CN203067387U - Double-piston independent damping vibration attenuation pressure regulating device - Google Patents
Double-piston independent damping vibration attenuation pressure regulating device Download PDFInfo
- Publication number
- CN203067387U CN203067387U CN 201320015520 CN201320015520U CN203067387U CN 203067387 U CN203067387 U CN 203067387U CN 201320015520 CN201320015520 CN 201320015520 CN 201320015520 U CN201320015520 U CN 201320015520U CN 203067387 U CN203067387 U CN 203067387U
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- piston
- sleeve
- piston sleeve
- vibration attenuation
- double
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Abstract
Provided is a double-piston independent damping vibration attenuation pressure regulating device. The double-piston independent damping vibration attenuation pressure regulating device is characterized in that a non-closed end of a valve core is connected and fixed with the left end of a piston, the piston is located at the left front end of a piston sleeve, a variable damping hole is formed in the middle of the piston sleeve, and one variable volume cavity is formed by the right end of the piston and the left end of the variable damping hole in the piston sleeve; the piston is arranged at the right end of the piston sleeve, another variable volume cavity is formed by the right end portion of the variable damping hole and the left end portion of the piston in the piston sleeve, the right end of the piston is contacted with a spring arranged on the inner side of an end cap, and the spring arranged on the inner side of the end cap is sleeved on the outer diameter of the piston sleeve and contacted with the inner side of a shoulder of the front end of the piston. The double-piston independent damping vibration attenuation pressure regulating device greatly improves dynamic stability of a pressure valve and enables the pressure valve to work stably; and independent damping vibration attenuation pressure regulating technology is adopted, therefore the dynamic behavior of the pressure valve is good and easy to stabilize, throttling loss caused by additional arrangement of a throttling device behind the valve is avoided, work efficiency of components and a system are improved, and work reliability of the components and the system is improved.
Description
Technical field
The utility model belongs to technical field of hydraulic elements, is specifically related to a kind of pressure regulator valve class.
Background technique
The hydraulic pressure valve is very important element in the hydraulic system such as relief valve, sequence valve and reduction valve etc., realizes the various pressure controls in the hydraulic system.Traditional switch or definite value pressure valve directly adopt spring to carry out pressure and regulate, and have advantage simple in structure, volume compact.Although the spring regulator has certain pressure buffer ability, do not have damping characteristic, be unfavorable for the dynamic stability of hydrovalve.In the design of traditional pressure valve and control pressurer system, adopt outlet in pressure valve to add throttling arrangement usually and improve its damping capacity, make pressure valve keep stable.On the runner throttling arrangement add the power loss that has not only increased system, and the heat that the throttling power loss transforms all produces certain influence to the distortion of element and the flow characteristic of system.Particularly for pilot valve, owing to be straight moving control, pressure valve is more difficult stable, is difficult to satisfy the proper functioning needs of system.
Less damping characteristic except make pressure valve be difficult for stable, also be easy to generate bigger pressure overshoot.System pressure rises more fast, and the pressure overshoot amount is just more big, and pressure overshoot causes the leakage at pipe joint place and the damage of component easily, influences the dynamic performance of system.
The model utility content
The utility model purpose provides a kind of double-piston independence damping vibration attenuation regulator.It can solve existing pressure valve effectively and be difficult for stable and the big problem of overshoot.
The utility model purpose is achieved through the following technical solutions: a kind of double-piston independence damping vibration attenuation regulator, comprise valve body, spool and first piston, it is characterized in that: the non-tight end of spool and the left end of first piston are connected and fixed, first piston is positioned at the left front end of piston sleeve, the middle part of piston sleeve is provided with the adaptive damping hole, and the left end in the right-hand member of first piston and adaptive damping hole forms a variable volume chamber in piston sleeve; The right-hand member of piston sleeve is provided with second piston, the right part in adaptive damping hole and the second piston left part form another variable volume chamber in piston sleeve, the right-hand member of second piston contacts with the spring that is located at the end cap inboard, the spring housing that is located at the end cap inboard the external diameter of piston sleeve and with the shoulder of piston sleeve front end in side contacts.
The quantity of above-mentioned damping hole can be 1～4, and the diameter scope is 0.5mm～1.1mm.
Can pass through clearance seal between above-mentioned first piston, second piston and the piston sleeve.
Spool is during towards right motion, promotes piston and has trend towards right motion.Before piston motion because piston sleeve is actionless, so piston moment towards right motion, the cavity volume of compression piston and piston sleeve is referred to as left cavity volume.Simultaneously, the cavity volume of piston sleeve and piston space is referred to as right cavity volume.
After left side cavity volume was compressed, chamber inner fluid pressure increased, and spool is formed first order hydraulic damping.High-voltage oil liquid in the left chamber flows to right cavity volume by throttle orifice.Because the pressure response of fluid is greater than the dynamic response of piston sleeve, therefore, the hydraulic medium of increase promotes piston behind the chamber to the right through the throttle orifice throttling and moves right.
Piston moves right the compression spring and obtains further pressure buffer.Because the damping function of throttle orifice, the pressure in the right chamber is more steady, therefore makes piston also less to the impact of spring.
After piston moves right, make the pressure of left and right chamber reduce, can lay down pressure peak rapidly.When spring during to piston rebound, make left and right chamber pressure increase, hinder piston and move right.
The right-hand member of piston sleeve has spring directly to support, and can slow down the interior instantaneous pressure of cavity volume to the impact of piston sleeve, helps the volume fluctuation of cavity volume to stablize, improve the pressure stationarity as early as possible.
Oil liquid pressure by left chamber to the direct damping function of spool, throttling after right chamber pressure to the damping function of piston and the direct vibration reduction and cushioning of spring, improved the dynamic stability of pressure valve greatly.Simultaneously, because that spring only bears the regulation range of the impact of a very little part and rigidity is bigger, make that the static pressure deviation of pressure valve is littler.
Compared with prior art, the beneficial effects of the utility model are:
This device utilizes hydraulic chamber's damping vibration attenuation technology independently, adjusts characteristic in conjunction with the pressure of spring, has improved the dynamic stability performance of pressure valve greatly, makes pressure valve work more steady.Owing to adopted independent damping vibration attenuation voltage-regulating technique, make that the dynamic characteristic of pressure valve is better, be highly susceptible to stablizing, avoided by adding the restriction loss that throttling arrangement causes behind the valve, not only improve the working efficiency of element and system, and improved the functional reliability of element and system.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 illustrates, a kind of embodiment of the present utility model is: a kind of double-piston independence damping vibration attenuation regulator, comprise valve body 1, spool 2 and first piston 3, the non-tight end of spool 2 and the left end of first piston 3 are connected and fixed, first piston 3 is positioned at the left front end of piston sleeve 6, the middle part of piston sleeve 6 is provided with adaptive damping hole 5, and the left end in the right-hand member of first piston 3 and adaptive damping hole 5 forms a variable volume chamber (being referred to as left cavity volume) in piston sleeve 6; The right-hand member of piston sleeve 6 is provided with second piston 7, the right part in adaptive damping hole 5 and second piston, 7 left parts form another variable volume chamber (being referred to as right cavity volume) in piston sleeve 6, the right-hand member of second piston 7 contacts with the spring 8 that is located at end cap 10 inboards, the spring 9 that is located at end cap 10 inboards be enclosed within piston sleeve 6 external diameter and with the shoulder of piston sleeve 6 front ends in side contacts.
The quantity of the damping hole that this is routine can be 1～4, and the diameter scope is 0.5mm～1.1mm.
Can pass through clearance seal between this routine first piston 3, second piston 7 and the piston sleeve 6.
Spool 2 is during towards right motion, promotes first piston 3 and has trend towards right motion.Before first piston 3 motion because piston sleeve 6 is actionless, so 3 moments of first piston towards right motion, the left cavity volume that compression first piston 3 and piston sleeve 6 form.Simultaneously, the right cavity volume compression between piston sleeve 6 and second piston 7.
After left side cavity volume was compressed, chamber inner fluid pressure increased, and spool 2 is formed first order hydraulic damping.High-voltage oil liquid in the left chamber flows to right cavity volume by throttle orifice 5.Because the pressure response of fluid is greater than the dynamic response of piston sleeve 6, therefore, the hydraulic medium of increase promotes second piston 7 behind the chamber to the right through throttle orifice 5 throttlings and moves right.
Second Piston 7 moves right compression spring 8 and obtains further pressure buffer.Because the damping function of throttle orifice 5, the pressure in the right chamber is more steady, therefore makes that the impact of 7 pairs of springs 8 of second piston is also less.
Second After piston 7 moves right, make the pressure of left and right chamber reduce, can lay down pressure peak rapidly.When 7 bounce-backs of 8 pairs of second pistons of spring, make left and right chamber pressure increase, hinder first piston 3 and move right.
The right-hand member of piston sleeve 6 has spring 9 directly to support, and can slow down the interior instantaneous pressure of cavity volume to the impact of piston sleeve, helps the volume fluctuation of cavity volume to stablize, improve the pressure stationarity as early as possible.
Oil liquid pressure by left chamber to the direct damping function of spool 2, throttling after right chamber pressure to the damping function of second piston 7 and the direct vibration reduction and cushioning of spring 9, improved the dynamic stability of pressure valve greatly.Simultaneously, because that spring only bears the regulation range of the impact of a very little part and rigidity is bigger, make that the static pressure deviation of pressure valve is littler.
Directly pack into the center hole of first piston 3 of the afterbody spindle nose of spool 2 is affixed, realizes being connected of 2 of independent damping vibration attenuation regulator and spools.Both do not have strict tolerance fit requirement, the center hole of first piston 3 or therefrom taking-up as long as assurance spool 2 afterbody spindle noses can be packed into flexibly.Spool 2 left ends are supported by valve body 1.
Second Piston 7 and piston sleeve 6 can be mobile vertically mutually, realize the fluid sealing by seal ring 4 between the two, and seal ring both can have been made the pull-rod type sealing, also can make the piston type sealing.Second piston, 7 right-hand members connect spring 8, and are by the endoporus guiding of piston sleeve 6, fixing by end cap 10.
Piston sleeve 6 is made three sections endoporus, cooperates with first piston 3, second piston 7 respectively, and neutral threaded hole is used for installing variable orifice.
The right-hand member of piston sleeve 6 directly links to each other with spring 9, and spring 9 is by piston sleeve 6 cylindricals guiding, and is fixing by end cap 10.
Throttle orifice 5 is to adopt the mode of screw plug centre-drilling hole to make, thereby is easy to change according to system requirements the dynamic characteristic of the size change valve of damping hole.Screw plug screw threads direct by screw thread and in piston sleeve 6 endoporus link to each other.
Claims (3)
1. double-piston independence damping vibration attenuation regulator, comprise valve body (1), spool (2) and first piston (3), it is characterized in that: the left end of the non-tight end of spool (2) and first piston (3) is connected and fixed, first piston (3) is positioned at the left front end of piston sleeve (6), the middle part of piston sleeve (6) is provided with adaptive damping hole (5), and the left end of the right-hand member of first piston (3) and adaptive damping hole (5) forms a variable volume chamber in piston sleeve (6); The right-hand member of piston sleeve (6) is provided with second piston (7), the right part in adaptive damping hole (5) and second piston (7) left part form another variable volume chamber in piston sleeve (6), the right-hand member of second piston (7) spring (8) inboard with being located at end cap (10) contact, be located at the inboard spring (9) of end cap (10) be enclosed within piston sleeve (6) external diameter and with the interior side contacts of the shoulder of piston sleeve (6) front end.
2. double-piston independence damping vibration attenuation regulator according to claim 1, it is characterized in that: the quantity of described damping hole (5) is 1～4, the diameter scope is 0.5mm～1.1mm.
3. double-piston independence damping vibration attenuation regulator according to claim 1 is characterized in that being: pass through clearance seal between described first piston (3), second piston (7) and the piston sleeve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015520 CN203067387U (en) | 2013-01-11 | 2013-01-11 | Double-piston independent damping vibration attenuation pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015520 CN203067387U (en) | 2013-01-11 | 2013-01-11 | Double-piston independent damping vibration attenuation pressure regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067387U true CN203067387U (en) | 2013-07-17 |
Family
ID=48766177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320015520 Withdrawn - After Issue CN203067387U (en) | 2013-01-11 | 2013-01-11 | Double-piston independent damping vibration attenuation pressure regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067387U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104567A (en) * | 2013-01-11 | 2013-05-15 | 西南交通大学 | Double-piston independent damping vibration attenuation pressure regulating device |
| CN111577698A (en) * | 2020-05-27 | 2020-08-25 | 三一汽车起重机械有限公司 | Buffer valve, rotary hydraulic system and crane |
-
2013
- 2013-01-11 CN CN 201320015520 patent/CN203067387U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104567A (en) * | 2013-01-11 | 2013-05-15 | 西南交通大学 | Double-piston independent damping vibration attenuation pressure regulating device |
| CN103104567B (en) * | 2013-01-11 | 2015-08-05 | 西南交通大学 | A kind of double-piston independence damping vibration attenuation voltage adjusting device |
| CN111577698A (en) * | 2020-05-27 | 2020-08-25 | 三一汽车起重机械有限公司 | Buffer valve, rotary hydraulic system and crane |
| CN111577698B (en) * | 2020-05-27 | 2022-06-17 | 三一汽车起重机械有限公司 | Buffer valve, rotary hydraulic system and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20150805 |
|
| RGAV | Abandon patent right to avoid regrant |