CN101699081B - Large-torque pneumatic actuator with shock-absorbing limiting device - Google Patents
Large-torque pneumatic actuator with shock-absorbing limiting device Download PDFInfo
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- CN101699081B CN101699081B CN2009101544257A CN200910154425A CN101699081B CN 101699081 B CN101699081 B CN 101699081B CN 2009101544257 A CN2009101544257 A CN 2009101544257A CN 200910154425 A CN200910154425 A CN 200910154425A CN 101699081 B CN101699081 B CN 101699081B
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Abstract
The invention discloses a large-torque pneumatic actuator with a shock-absorbing limiting device, which mainly solves the problems that a stopper in the conventional pneumatic actuator has no shock-absorbing function so as to easily cause damage to a box body, a cylinder end cover and related components. The large-torque pneumatic actuator is characterized in that: the stopper (6) mainly comprises a shock-absorbing limiting body (7), a shock-absorbing column (8) and a resetting spring (9), wherein a stepped hole is formed in the shock-absorbing limiting body (7) and the shock-absorbing column (8) is arranged in the stepped hole; the shock-absorbing limiting body (7) and the shock-absorbing column (8) encircle a chamber full of elastic liquid (11); the resetting spring (9) is arranged in the chamber, and one end of the resetting spring is contacted with the shock-absorbing column (8); the side wall of the small diameter end root of the shock-absorbing column (8) is provided with a throttling hole (12) communicated with the chamber; and the shock-absorbing column (8) and the shock-absorbing limiting body (7) can slide relatively and are sealed. The large-torque pneumatic actuator with the shock-absorbing limiting device improves the structure of the stopper and has the characteristics of compact structure and good shock-absorbing effect.
Description
Technical field:
The present invention relates to a kind of pneumatic actuator, especially with the large-torque pneumatic actuator of shock-absorbing limiting device.
Background technique:
At present, pneumatic actuator is widely adopted in industrial automation control, opening and closing as control valve, generally be divided into straight journey and angle stroke, wherein the pneumatic actuator of angle stroke structure is usually used in the valve of high pulling torque, mainly by cylinder block, cylinder end piece, piston, piston rod, casing, guide mechanism, fork assembly and snubber are formed, the fork assembly is fixed on the torque output shaft, snubber wherein is 2 and is installed in respectively on the casing and cylinder end piece corresponding with the two ends of piston rod, promote the piston linear motion with pressurized air as power source, driving the fork assembly by piston rod to the greatest extent rotates, the effect of snubber is that the angle position of restriction fork assembly is realized the corner location to torque output shaft, accurately the unlatching of control valve or close.Because piston rod is bigger to the impact force of snubber in the pistons work process, and being connected to be and being rigidly connected between existing snubber and casing and the cylinder end piece, snubber does not have shock-absorbing function, piston rod directly is passed on casing and the cylinder end piece the impact force of snubber, easily make casing, cylinder end piece and associated component cause damage, influence ordinary production.
Summary of the invention:
For the snubber that overcomes in the existing pneumatic actuator does not have shock-absorbing function, the deficiency that easily causes casing, cylinder end piece and associated component to damage, the invention provides a kind of large-torque pneumatic actuator with shock-absorbing limiting device, the large-torque pneumatic actuator of this band shock-absorbing limiting device has improved the structure of snubber, has the characteristics of compact structure and good damping effect.
Technological scheme of the present invention is: the large-torque pneumatic actuator of this band shock-absorbing limiting device comprises cylinder block, cylinder end piece, piston, piston rod, casing and snubber, snubber is 2 and is installed in respectively on the casing and cylinder end piece corresponding with the two ends of piston rod, snubber is mainly by the damping limit body, shock structure and Returnning spring are formed, have shoulder hole in the damping limit body and in this hole, shock structure is installed, damping limit body and shock structure surround the chamber of filling with elastic liquid, Returnning spring places in the chamber and the one end contacts with shock structure, it is outer and corresponding with piston rod end that the cross section of shock structure is that the damping limit body is stretched out in the termination of T-shape and its miner diameter end, have the throttle orifice that communicates with described chamber on the sidewall of the miner diameter end root of shock structure, but slide relative and sealing between shock structure and the damping limit body.
Be separately installed with Sealing on described damping limit body and the shock structure, described throttle orifice is between two Sealings.
Described Sealing is " X " RunddichtringO.
The damping limit body all is threaded on described casing and the cylinder end piece.
The termination corresponding sealing plug screw that has been threaded on the described damping limit body with shock structure.
The compressibility of described elastic liquid is not less than 2%.
The present invention has following beneficial effect: owing to take such scheme, its end face contacts with shock structure in the snubber when the termination of piston rod moves to the position of snubber, the motion of promotion shock structure, at this moment, elastic liquid and Returnning spring in the chamber that damping limit body and shock structure surround are compressed, shock structure moves inward, produce annular chamber between the miner diameter end of shock structure and the damping limit body, elastic liquid in the described chamber enters in the above-mentioned annular chamber by throttle orifice, owing to be subjected to the restriction of the aperture overcurrent of throttle orifice, the movement velocity of shock structure gets to be controlled, piston rod is converted into the pressure energy of the elastic liquid in the described chamber and the elastic potential energy of Returnning spring to the impact energy of shock structure, and miner diameter end and the annular chamber between the damping limit body that the pressure of the elastic liquid in the described chamber can make liquid enter shock structure in the process of shock structure operation gradually discharge.In the said process, the suffered impact force of damping limit body is very small, and the casing that is associated with it, cylinder end piece and other assembly can not sustain damage, and have damping effect preferably, and is structurally also very compact, rationally.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present invention;
Accompanying drawing 2 is structure sectional views of snubber 6 among Fig. 1.
1-cylinder block among the figure, the 2-cylinder end piece, the 3-piston, the 4-piston rod, the 5-casing, the 6-snubber, 7-damping limit body, the 8-shock structure, the 9-Returnning spring, 10-seals plug screw, 11-elastic liquid, 12-throttle orifice, 13-Sealing.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, the large-torque pneumatic actuator of this band shock-absorbing limiting device comprises cylinder block 1, cylinder end piece 2, piston 3, piston rod 4, casing 5 and snubber 6, snubber 6 is 2 and is installed in respectively on casing corresponding with the two ends of piston rod 45 and the cylinder end piece 2, snubber 6 is mainly by damping limit body 7, shock structure 8 and Returnning spring 9 are formed, have shoulder hole in the damping limit body 7 and shock structure 8 is installed in this hole, damping limit body 7 and shock structure 8 surround the chamber of filling with elastic liquid 11, elastic liquid 11 is generally selected the bigger oil-based liquid of compressibility for use, can lube pistons 3, also can avoid the associated component in the described chamber not produce corrosion.Returnning spring 9 places in the chamber and the one end contacts with shock structure 8, it is outer and corresponding with piston rod 4 terminations that the cross section of shock structure 8 is that damping limit body 7 is stretched out in the termination of T-shape and its miner diameter end, have the throttle orifice 12 that communicates with described chamber on the sidewall of the miner diameter end root of shock structure 8, but slide relative and sealing between shock structure 8 and the damping limit body 7.Its end face contacts with shock structure 8 in the snubber 6 when the termination of piston rod 4 moves to the position of snubber 6, promote shock structure 8 motions, at this moment, elastic liquid 11 and Returnning spring 9 in the chamber that damping limit body 7 and shock structure 8 surround are compressed, shock structure 8 is to moving near sealing plug screw 10 directions, produce annular chamber between the miner diameter end of shock structure 8 and the damping limit body 7, elastic liquid 11 in the described chamber enters in the above-mentioned annular chamber by throttle orifice 12, owing to be subjected to the restriction of the aperture overcurrent of throttle orifice 12, the movement velocity of shock structure 8 gets to be controlled, the impact energy of 4 pairs of shock structures 8 of piston rod is converted into the elastic potential energy of the pressure energy and the Returnning spring 9 of the elastic liquid 11 in the described chamber, and miner diameter end and the annular chamber between the damping limit body 7 that the pressure of the elastic liquid 11 in the described chamber can make elastic liquid 11 enter shock structure 8 in the process of shock structure 8 operations gradually discharge, piston rod 4 stops back shock structure 8 under the elastic force effect of Returnning spring 9 and slowly resets, and elastic liquid 11 flows back to again in the described chamber from described annular chamber.In the said process, the suffered impact force of damping limit body 7 is very small, and the casing 5 that is associated with it, cylinder end piece 2 and other assembly can not sustain damage, and have damping effect preferably, and is structurally also very compact, rationally.
By shown in Figure 2, be separately installed with Sealing 13 on described damping limit body 7 and the shock structure 8, described throttle orifice 12 is between two Sealings 13.The miner diameter end of shock structure 8 shock structure 8 in running and the seal of the annular chamber between the damping limit body 7 have been guaranteed.
By shown in Figure 2, described Sealing 13 is " X " RunddichtringO.The area of contact of " X " RunddichtringO and damping limit body 7 and shock structure 8 is big, good seal performance.
By shown in Figure 1, damping limit body 7 all is threaded on described casing 5 and the cylinder end piece 2.Be convenient to the installation and the adjustment of snubber 6.
By shown in Figure 2, the termination corresponding sealing plug screw 10 that has been threaded on the described damping limit body 7 with shock structure 8.This structure mainly is to be convenient to processing, and is very convenient when the assembling to shock structure 8, Returnning spring 9 simultaneously.Remove this exception and also can adopt split type damping limit body 7, its Placement can be flange, screw thread etc., can also adopt the shock structure 8 of split, and its concrete structure is not done herein and given unnecessary details.
By shown in Figure 2, can produce elastic force in order to guarantee elastic liquid 11, the compressibility of described elastic liquid 11 is not less than 2%.
Claims (6)
1. large-torque pneumatic actuator with shock-absorbing limiting device, comprise cylinder block (1), cylinder end piece (2), piston (3), piston rod (4), casing (5) and snubber (6), snubber (6) is 2 and is installed in respectively on the casing (5) and cylinder end piece (2) corresponding with the two ends of piston rod (4), it is characterized in that: snubber (6) is mainly by damping limit body (7), shock structure (8) and Returnning spring (9) are formed, have shoulder hole in the damping limit body (7) and shock structure (8) is installed in this hole, damping limit body (7) and shock structure (8) surround the chamber of filling with elastic liquid (11), Returnning spring (9) places in the chamber and the one end contacts with shock structure (8), it is outer and corresponding with piston rod (4) termination that the cross section of shock structure (8) is that damping limit body (7) is stretched out in the termination of T-shape and its miner diameter end, have the throttle orifice (12) that communicates with described chamber on the sidewall of the miner diameter end root of shock structure (8), shock structure (8) and damping limit body (7) but between slide relative and sealing.
2. the large-torque pneumatic actuator of band shock-absorbing limiting device according to claim 1 is characterized in that: be separately installed with Sealing (13) on damping limit body (7) and the shock structure (8), described throttle orifice (12) is between two Sealings (13).
3. the large-torque pneumatic actuator of band shock-absorbing limiting device according to claim 2 is characterized in that: Sealing (13) is " X " RunddichtringO.
4. according to the large-torque pneumatic actuator of claim 1,2 or 3 described band shock-absorbing limiting devices, it is characterized in that: damping limit body (7) all is threaded on casing (5) and the cylinder end piece (2).
5. according to the large-torque pneumatic actuator of claim 1,2 or 3 described band shock-absorbing limiting devices, it is characterized in that: damping limit body (7) is gone up the termination corresponding with shock structure (8) the sealing plug screw (10) that has been threaded.
6. according to the large-torque pneumatic actuator of claim 1,2 or 3 described band shock-absorbing limiting devices, it is characterized in that: the compressibility of described elastic liquid (11) is not less than 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101544257A CN101699081B (en) | 2009-10-23 | 2009-10-23 | Large-torque pneumatic actuator with shock-absorbing limiting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101544257A CN101699081B (en) | 2009-10-23 | 2009-10-23 | Large-torque pneumatic actuator with shock-absorbing limiting device |
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| Publication Number | Publication Date |
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| CN101699081A CN101699081A (en) | 2010-04-28 |
| CN101699081B true CN101699081B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101544257A Active CN101699081B (en) | 2009-10-23 | 2009-10-23 | Large-torque pneumatic actuator with shock-absorbing limiting device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635605A (en) * | 2012-04-27 | 2012-08-15 | 深圳市华星光电技术有限公司 | Safety pin |
| CN105090167B (en) * | 2015-08-24 | 2018-01-05 | 航天长征化学工程股份有限公司 | Quick exhaust buffer gear |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU983339A1 (en) * | 1981-04-29 | 1982-12-23 | Ростовское Высшее Военное Командное Училище Им.Главного Маршала Артиллерии Неделина М.И. | Damper for suppressing mechanic oscillations and impact loads |
| CN2292929Y (en) * | 1996-08-23 | 1998-09-30 | 建设部长沙建设机械研究院 | Buffer of plunger oil cylinder for concrete pump |
| CN1260290A (en) * | 1999-12-26 | 2000-07-19 | 崔东灿 | Two-tage hydraulic damping shock absorber |
| CN2663282Y (en) * | 2003-11-14 | 2004-12-15 | 重庆长安减震器有限公司 | Adjustable upended type front shock absorber |
| CN1661259A (en) * | 2004-02-23 | 2005-08-31 | 沈阳东岳液压工程有限公司 | Differential dynamic pressure feedback unit of anti impactive and vibration proof in use for large-volume equipment |
| CN201554716U (en) * | 2009-10-23 | 2010-08-18 | 温州市康赛特自动控制阀门有限公司 | Large-torque pneumatic actuator provided with shock absorption limiting device |
-
2009
- 2009-10-23 CN CN2009101544257A patent/CN101699081B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU983339A1 (en) * | 1981-04-29 | 1982-12-23 | Ростовское Высшее Военное Командное Училище Им.Главного Маршала Артиллерии Неделина М.И. | Damper for suppressing mechanic oscillations and impact loads |
| CN2292929Y (en) * | 1996-08-23 | 1998-09-30 | 建设部长沙建设机械研究院 | Buffer of plunger oil cylinder for concrete pump |
| CN1260290A (en) * | 1999-12-26 | 2000-07-19 | 崔东灿 | Two-tage hydraulic damping shock absorber |
| CN2663282Y (en) * | 2003-11-14 | 2004-12-15 | 重庆长安减震器有限公司 | Adjustable upended type front shock absorber |
| CN1661259A (en) * | 2004-02-23 | 2005-08-31 | 沈阳东岳液压工程有限公司 | Differential dynamic pressure feedback unit of anti impactive and vibration proof in use for large-volume equipment |
| CN201554716U (en) * | 2009-10-23 | 2010-08-18 | 温州市康赛特自动控制阀门有限公司 | Large-torque pneumatic actuator provided with shock absorption limiting device |
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| CN101699081A (en) | 2010-04-28 |
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Address after: 325000 Wenzhou, Longwan Binhai Industrial Zone (Longwan valve base), road four, road three Patentee after: Sound Valve Group Co Ltd Address before: 325055 No. 385, Airport Avenue, Longwan District, Zhejiang, Wenzhou Patentee before: Wenzhou Kangsaite Automatic Control Valve Co., Ltd. |
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Effective date of registration: 20180713 Address after: 242000 No. 9, Anguo Road, Xuancheng high tech Industrial Development Zone, Xuancheng, Anhui Patentee after: Connecticut valve group (Xuancheng) Co., Ltd. Address before: 325000 Binhai Industrial Area, Longwan District, Wenzhou, Zhejiang (Longwan valve base) four road three road Patentee before: Sound Valve Group Co Ltd |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 242000 No. 9, Anguo Road, Xuancheng high tech Industrial Development Zone, Xuancheng, Anhui Patentee after: Anhui Kangset Fluid Control Technology Co., Ltd. Address before: 242000 No. 9, Anguo Road, Xuancheng high tech Industrial Development Zone, Xuancheng, Anhui Patentee before: Konset Valve Group (Xuancheng) Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |