CN103075385A - Electric servo oil cylinder - Google Patents
Electric servo oil cylinder Download PDFInfo
- Publication number
- CN103075385A CN103075385A CN2011103293903A CN201110329390A CN103075385A CN 103075385 A CN103075385 A CN 103075385A CN 2011103293903 A CN2011103293903 A CN 2011103293903A CN 201110329390 A CN201110329390 A CN 201110329390A CN 103075385 A CN103075385 A CN 103075385A
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- operated valve
- mortor operated
- passage
- hydraulic fluid
- fluid port
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Abstract
The invention relates to an electric servo oil cylinder, which comprises a cylinder, a front end cover, a rear end cover, a piston and a piston rod, wherein the front end cover is provided with an oil inlet passage, the rear end cover is provided with an oil return passage, and the electric servo oil cylinder also comprises a connecting block which is fixedly connected with the rear end cover, an electric valve which is fixedly connected with the other side of the connecting block, a servo motor with an output shaft being fixedly connected with one end of a valve core of the electric valve, and a lead screw which is fixedly connected with the other end of the valve core of the electric valve; the other end of the lead screw is fixedly connected with the piston rod through a threaded structure in the axial direction; the connecting block is provided with a first oil passing passage and a second oil passing passage, and an electric valve shell is provided with a first oil control port and a second oil control port; and when the valve core is opened, the first oil control port, the first oil passing passage and the oil inlet passage form an access, and the second oil control port, the second oil passing passage and the oil return passage form an access; and compared with the traditional servo oil cylinder, the electric servo oil cylinder has advantages on the aspects of the manufacturing difficulty and the cost; and the digital control can be conveniently realized through the drive of the motor, and the working range of high frequency can be realized.
Description
Technical field
The present invention relates to a kind of electrical servo oil cylinder, it is high particularly to relate to a kind of contamination resistance, simple in structure, the electrical servo oil cylinder that frequency response is high.
Background technique
Tradition servovalve-nozzle flapper two-stage servovalve is had relatively high expectations to oil cleanliness, the General Requirements turbidity test reach the NAS5-6 level, otherwise the as easy as rolling off a log faults such as plug nozzle or restriction that occur in using, the motor driving servovalve is take motor as driving source, the easy pollution structure that does not have similar nozzle throttling, so contamination resistance improves greatly.In addition, the frequency range of traditional servo hydraulic cylinder (for example nozzle-flapper servo valve control oil hydraulic cylinder) is limited by the natural frequency of oil hydraulic cylinder own and servovalve frequency range, is difficult to the frequency response that reaches higher, such as 300Hz.Use the digital hydraulic cylinder of motor driving high-precision sliding valve, owing to adopt motor driving, and valve core of the spool valve has been avoided the restriction of servovalve frequency range by the global design of accurate lead screw and hydraulic cylinder piston interlock, thereby can reach 300hz, even higher frequency response.Therefore need badly a kind of novel electrical servo oil cylinder is provided.
Summary of the invention
It is high that the technical problem to be solved in the present invention provides a kind of contamination resistance, the electrical servo oil cylinder of high frequency response.
For solving the problems of the technologies described above, a kind of electrical servo oil cylinder of the present invention, comprise cylinder barrel, with fixing front cover, the rear end cover of cylinder barrel sealing, be arranged at the piston among the cylinder barrel, and the piston rod that is fixedly connected with and passes rear end cover with piston, front cover is provided with oil inlet passage, rear end cover is provided with drainback passage, also comprises the actuating motor that is fixedly connected with spool one end of mortor operated valve with fixing contiguous block, the mortor operated valve that is fixedly connected with the contiguous block opposite side, its output shaft of rear end cover, the leading screw that is fixedly connected with the spool the other end of mortor operated valve; The other end of leading screw is fixedly connected with piston rod vertically by worm structure; Be provided with first on the contiguous block and cross oily passage and second and cross oily passage, be provided with the first control hydraulic fluid port and the second control hydraulic fluid port on the mortor operated valve housing; When spool was opened, first on the control of first on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and oil inlet passage forms path, and second on the control of second on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and drainback passage forms path; When spool was closed, first on the control of first on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and oil inlet passage disconnects, and second on the control of second on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and drainback passage disconnects.
Spool is arranged among the mortor operated valve valve pocket, and spool passes mortor operated valve end cap and the mortor operated valve hydraulic fluid port end cap that is arranged at the mortor operated valve two ends.
Be provided with respectively rotating seal with spool contact position place on the mortor operated valve end cap with on spool contact position place, the mortor operated valve hydraulic fluid port end cap.
The axial both sides at piston and piston rod link position place are respectively arranged with front cushion collar and rear cushion collar.
On the piston with cylinder barrel contact position place, front cover on piston rod contact position place, and be provided with respectively rotating seal with piston rod contact position place on the piston.
Cross on oily passage contact position place, the second control hydraulic fluid port with second and cross oily passage contact position place, first and cross on the oily passage and oil inlet passage contact position place with first on the first control hydraulic fluid port, and second crosses on the oily passage and be provided with respectively the O RunddichtringO with drainback passage contact position place.
The whole manufacture difficulty of electrical servo oil cylinder of the present invention and the more traditional servo-cylinder of cost have greater advantage.
The present invention can realize Digital Control easily by driven by servomotor, and higher frequency operating range is arranged.
The present invention adopts multi-sealed means and single-stage mortor operated valve, and passes through the combination of actuating motor, screw mandrel and oil hydraulic cylinder, has overcome the poor problem of traditional servovalve oil hydraulic cylinder contamination resistance.
Description of drawings
Fig. 1 is the schematic representation of a kind of electrical servo oil cylinder provided by the present invention.
Among the figure: 1 is that actuating motor, 2 is that coupling, 3 is that mortor operated valve housing, 4 is that mortor operated valve valve pocket, 5 is that spool, 6 is that rear end cover, 7 is that leading screw, 8 is that cylinder barrel, 9 is that piston, 10 is that front cover, 11 is that piston rod, 12 is that front cushion collar, 13 is that rear cushion collar, 14 is that contiguous block, 15 is that mortor operated valve end cap, 16 is mortor operated valve hydraulic fluid port end cap.
Embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
The present invention includes cylinder barrel 8, with cylinder barrel 8 by screw sealing fixing front cover 10, rear end cover 6, be arranged at the piston 9 among the cylinder barrel 8, and be fixedly connected with and pass the piston rod 11 of rear end cover 14 with piston 9.Cushion collar 12 and rear cushion collar 13 before the axial both sides at piston 9 and piston rod link position place are respectively arranged with.On the piston 9 with cylinder barrel 8 contact position places, front cover 10 on piston rod 11 contact position places, and be provided with respectively rotating seal with piston rod 11 contact position places on the piston 9.Front cover 10 is provided with oil inlet passage, and rear end cover 6 is provided with drainback passage.
The contiguous block 14 that is fixed with by screw on the rear end cover 6.Contiguous block 14 opposite sides are fixedly connected with mortor operated valve by screw.Spool 5 is arranged among the mortor operated valve valve pocket 4, and spool 5 passes mortor operated valve end cap 15 and the mortor operated valve hydraulic fluid port end cap 16 that is arranged at the mortor operated valve two ends.Be provided with respectively rotating seal with spool 5 contact position places on the mortor operated valve end cap 15 with on spool 5 contact position places, the mortor operated valve hydraulic fluid port end cap 16.One end of the spool 5 of mortor operated valve is fixedly connected with by the output shaft of coupling 15 with actuating motor 1, and the other end of spool 5 is fixedly connected with leading screw 7 by another coupling; The other end of leading screw 7 is fixedly connected with piston rod 11 vertically by worm structure.Actuating motor 1 is existing standard actuating motor.Leading screw 7 is preferably precision lead screw.
Be provided with first on the contiguous block 14 and cross oily passage and second and cross oily passage, be provided with the first control hydraulic fluid port and the second control hydraulic fluid port on the mortor operated valve housing 3; When spool 5 is opened, on on the mortor operated valve housing 3 first control hydraulic fluid port, the contiguous block 14 first crossed oily channel connection, and by oil pipe and oil inlet passage formation path, second on the control of second on the mortor operated valve housing 3 hydraulic fluid port, the contiguous block 14 crosses oily passage and drainback passage forms path.When spool 5 was closed, first on the control of first on the mortor operated valve housing 3 hydraulic fluid port, the contiguous block 14 crosses oily passage and oil inlet passage disconnects, and second on the control of second on the mortor operated valve housing 3 hydraulic fluid port, the contiguous block crosses oily passage and drainback passage disconnects.
Cross on oily passage contact position place, the second control hydraulic fluid port with second and cross oily passage contact position place, first and cross on the oily passage and oil inlet passage contact position place with first on the first control hydraulic fluid port, and second crosses on the oily passage and be provided with respectively the O RunddichtringO with drainback passage contact position place.
Working procedure of the present invention is as follows:
When actuating motor 1 did not rotate output, the spool 5 of mortor operated valve was in zero-bit, and the first control hydraulic fluid port of mortor operated valve and the second control hydraulic fluid port are all closed.When actuating motor 1 clockwise rotates a fixing turn according to instruction, spool 5 and the leading screw 7 of the mortor operated valve that is attached thereto by coupling 2 all clockwise rotate same number of turns, the spool 5 of the rotation pulling mortor operated valve of leading screw 7 is moved to the left, valve port is opened, the first control hydraulic fluid port of mortor operated valve is communicated with oil inlet passage, the second control hydraulic fluid port of mortor operated valve is communicated with drainback passage, pressure oil enters the left chamber of oil hydraulic cylinder, the right chamber oil return of oil hydraulic cylinder, piston rod 11 moves right, and then the spool 5 that drives leading screw 7 and mortor operated valve moves right, the opening of the spool 5 of mortor operated valve reduces gradually, until valve port is closed, piston rod 11 stops mobile.In whole process, the distance that moves right of piston rod 11 equals the output number of turns of actuating motor 1 and the amassing of helical pitch of leading screw 7.Otherwise when actuating motor 1 output counter-rotation, piston rod 11 is moved to the left.
Claims (6)
1. electrical servo oil cylinder, comprise cylinder barrel, with fixing front cover, the rear end cover of cylinder barrel sealing, be arranged at the piston among the cylinder barrel, and the piston rod that is fixedly connected with and passes rear end cover with piston, described front cover is provided with oil inlet passage, described rear end cover is provided with drainback passage, it is characterized in that: also comprise the actuating motor that is fixedly connected with spool one end of described mortor operated valve with fixing contiguous block, the mortor operated valve that is fixedly connected with described contiguous block opposite side, its output shaft of described rear end cover, the leading screw that is fixedly connected with the spool the other end of described mortor operated valve; The other end of described leading screw is fixedly connected with piston rod vertically by worm structure; Be provided with first on the described contiguous block and cross oily passage and second and cross oily passage, be provided with the first control hydraulic fluid port and the second control hydraulic fluid port on the described mortor operated valve housing; When described spool was opened, first on the control of first on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and oil inlet passage forms path, and second on the control of second on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and drainback passage forms path; When described spool was closed, first on the control of first on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and oil inlet passage disconnects, and second on the control of second on mortor operated valve housing hydraulic fluid port, the contiguous block crosses oily passage and drainback passage disconnects.
2. a kind of electrical servo oil cylinder according to claim 1, it is characterized in that: described spool is arranged among the mortor operated valve valve pocket, and described spool passes mortor operated valve end cap and the mortor operated valve hydraulic fluid port end cap that is arranged at described mortor operated valve two ends.
3. a kind of electrical servo oil cylinder according to claim 2 is characterized in that: be provided with respectively rotating seal with spool contact position place on the described mortor operated valve end cap with on spool contact position place, the mortor operated valve hydraulic fluid port end cap.
4. a kind of electrical servo oil cylinder according to claim 1, it is characterized in that: the axial both sides at described piston and piston rod link position place are respectively arranged with front cushion collar and rear cushion collar.
5. a kind of electrical servo oil cylinder according to claim 1, it is characterized in that: on the described piston with cylinder barrel contact position place, described front cover on piston rod contact position place, and be provided with respectively rotating seal with piston rod contact position place on the described piston.
6. a kind of electrical servo oil cylinder according to claim 1, it is characterized in that: cross on oily passage contact position place, described the second control hydraulic fluid port with second and cross oily passage contact position place, described first and cross on the oily passage and oil inlet passage contact position place with first on described the first control hydraulic fluid port, and described second crosses on the oily passage and be provided with respectively the O RunddichtringO with drainback passage contact position place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103293903A CN103075385A (en) | 2011-10-26 | 2011-10-26 | Electric servo oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103293903A CN103075385A (en) | 2011-10-26 | 2011-10-26 | Electric servo oil cylinder |
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| CN103075385A true CN103075385A (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103293903A Pending CN103075385A (en) | 2011-10-26 | 2011-10-26 | Electric servo oil cylinder |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727100A (en) * | 2014-01-16 | 2014-04-16 | 焦作市华科液压机械制造有限公司 | Digital type hydraulic cylinder |
| CN104930014A (en) * | 2015-06-05 | 2015-09-23 | 上海美西为机电设备有限公司 | Digital servo hydraulic cylinder |
| CN105058833A (en) * | 2015-08-13 | 2015-11-18 | 天津市泉龙工贸有限公司 | Numerical control hydraulic machine |
| CN105065364A (en) * | 2015-08-13 | 2015-11-18 | 天津市泉龙工贸有限公司 | Numerical control oval oil cylinder |
| CN105179376A (en) * | 2015-08-13 | 2015-12-23 | 天津市泉龙工贸有限公司 | Numerical-control oil cylinder |
| CN106369006A (en) * | 2016-11-14 | 2017-02-01 | 浙江大学舟山海洋研究中心 | Digital servo hydraulic cylinder |
| CN106438560A (en) * | 2016-10-30 | 2017-02-22 | 马鞍山市裕华机械制造有限公司 | Novel digital bending machine oil cylinder |
| CN104033432B (en) * | 2014-05-23 | 2017-06-13 | 北京航天发射技术研究所 | Numerical control oil cylinder closed-loop control system and method |
| CN107588056A (en) * | 2017-09-30 | 2018-01-16 | 深圳领威科技有限公司 | Composite oil cylinder |
| CN107605825A (en) * | 2017-09-12 | 2018-01-19 | 江苏理工学院 | A kind of large hydraulic press crossbeam electrical servo levelling device |
| CN107917117A (en) * | 2016-10-11 | 2018-04-17 | 张利 | A kind of mechanical hydraulic servo cylinder |
| CN108331801A (en) * | 2018-04-13 | 2018-07-27 | 王志海 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
| CN109798280A (en) * | 2019-01-25 | 2019-05-24 | 新昌县三特自动化科技有限公司 | The automatic locking mechanism of servo-cylinder |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
| CN113107823A (en) * | 2021-05-28 | 2021-07-13 | 上海浩平机电设备有限公司 | Oil pump variable mechanism adopting hydraulic screw rod and control method thereof |
| CN114179343A (en) * | 2021-12-06 | 2022-03-15 | 盐城市智成机械制造有限公司 | Embossing machine capable of quickly adjusting working stroke |
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| JPS5827121Y2 (en) * | 1978-07-25 | 1983-06-13 | 株式会社トキメック | Fluid pressure servo cylinder |
| CN101008413A (en) * | 2007-01-12 | 2007-08-01 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN101163891A (en) * | 2005-04-22 | 2008-04-16 | 费斯托合资公司 | Drive device comprising a position controller |
| CN201636116U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Gap cushioning hydraulic cylinder |
-
2011
- 2011-10-26 CN CN2011103293903A patent/CN103075385A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5827121Y2 (en) * | 1978-07-25 | 1983-06-13 | 株式会社トキメック | Fluid pressure servo cylinder |
| CN101163891A (en) * | 2005-04-22 | 2008-04-16 | 费斯托合资公司 | Drive device comprising a position controller |
| CN101008413A (en) * | 2007-01-12 | 2007-08-01 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN201636116U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Gap cushioning hydraulic cylinder |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727100A (en) * | 2014-01-16 | 2014-04-16 | 焦作市华科液压机械制造有限公司 | Digital type hydraulic cylinder |
| CN104033432B (en) * | 2014-05-23 | 2017-06-13 | 北京航天发射技术研究所 | Numerical control oil cylinder closed-loop control system and method |
| CN104930014A (en) * | 2015-06-05 | 2015-09-23 | 上海美西为机电设备有限公司 | Digital servo hydraulic cylinder |
| CN105179376B (en) * | 2015-08-13 | 2017-08-25 | 天津市泉龙工贸有限公司 | A kind of numerical control oil cylinder |
| CN105065364A (en) * | 2015-08-13 | 2015-11-18 | 天津市泉龙工贸有限公司 | Numerical control oval oil cylinder |
| CN105058833A (en) * | 2015-08-13 | 2015-11-18 | 天津市泉龙工贸有限公司 | Numerical control hydraulic machine |
| CN105065364B (en) * | 2015-08-13 | 2017-12-26 | 天津市泉龙工贸有限公司 | A kind of numerical control ellipse oil cylinder |
| CN105179376A (en) * | 2015-08-13 | 2015-12-23 | 天津市泉龙工贸有限公司 | Numerical-control oil cylinder |
| CN107917117A (en) * | 2016-10-11 | 2018-04-17 | 张利 | A kind of mechanical hydraulic servo cylinder |
| CN106438560A (en) * | 2016-10-30 | 2017-02-22 | 马鞍山市裕华机械制造有限公司 | Novel digital bending machine oil cylinder |
| CN106369006A (en) * | 2016-11-14 | 2017-02-01 | 浙江大学舟山海洋研究中心 | Digital servo hydraulic cylinder |
| CN107605825B (en) * | 2017-09-12 | 2019-02-15 | 江苏理工学院 | A kind of large hydraulic press crossbeam electrical servo levelling device |
| CN107605825A (en) * | 2017-09-12 | 2018-01-19 | 江苏理工学院 | A kind of large hydraulic press crossbeam electrical servo levelling device |
| CN107588056A (en) * | 2017-09-30 | 2018-01-16 | 深圳领威科技有限公司 | Composite oil cylinder |
| CN108331801A (en) * | 2018-04-13 | 2018-07-27 | 王志海 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
| CN109798280A (en) * | 2019-01-25 | 2019-05-24 | 新昌县三特自动化科技有限公司 | The automatic locking mechanism of servo-cylinder |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
| CN113107823A (en) * | 2021-05-28 | 2021-07-13 | 上海浩平机电设备有限公司 | Oil pump variable mechanism adopting hydraulic screw rod and control method thereof |
| CN114179343A (en) * | 2021-12-06 | 2022-03-15 | 盐城市智成机械制造有限公司 | Embossing machine capable of quickly adjusting working stroke |
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Application publication date: 20130501 |