CN107202048A - A kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism - Google Patents
A kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism Download PDFInfo
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- CN107202048A CN107202048A CN201710444054.0A CN201710444054A CN107202048A CN 107202048 A CN107202048 A CN 107202048A CN 201710444054 A CN201710444054 A CN 201710444054A CN 107202048 A CN107202048 A CN 107202048A
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- piston
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- valve
- pressure balance
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
A kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, belong to deep-sea electro-hydraulic servo technical field, ball pivot rod end is arranged on external part piston rod by ball pivot rod end threaded connection hole, together with cylinder combination part is connected by screw with valve block and pressure equaliser sub-assembly, together with valve block and pressure equaliser sub-assembly are connected by screw with dummy piston placing tube, dummy piston is placed in dummy piston placing tube, rear and front end is seawater and high-voltage oil liquid respectively, high-voltage oil liquid is entered in dummy piston placing tube by high pressure oilhole, pressure balance for whole system, dummy piston places tube rear end and is uniformly provided with four baffle plates, emergent pipe joint is arranged on piston rod pressure balance cylinder and cylinder bottom head.The device is beneficial in that：It is laid out using pressure balance and highly integrated structure design, while obtaining thought using double redundancy designs, reliability, life-span and security are greatly improved.
Description
Technical field
The present invention relates to a kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, specifically application drive control
Device processed, motor, plunger pump, servo valve, valve block and pressure equaliser sub-assembly, dummy piston placing tube composition, belong to deep-sea
Electro-hydraulic servo technical field.
Background technology
Hydraulic system is due to having the advantages that heavy load, high specific force, bootstrapping property are widely used in traditional winged control and ship
In oceangoing ship steering control system.However, with scientific development and technological innovation, such as efficiency that it is present is low, fault rate is high, maintenance cost
High the problems such as, becomes increasingly conspicuous.Since 21 century, with new material, motor technology, control and the development of advanced manufacturing technology, fly
Control system has entered power-by-wire (power-by-wire) epoch.As realizing power-by-wire carrier --- electronic hydrostatic is made
The research of dynamic device (EHA) and electro-hydraulic actuator (EBHA) has obtained the attention of lot of domestic and foreign related scientific research mechanism.
In view of the above problems, current flight device, the high-power servo control mechanism of ship generally use the principle of hydraulic valve control, because
This, is for future aircraft, ship etc. to High-reliability large-power fax servo start technical need, and reduction energy resource consumption,
Mitigate volume weight, be easily installed the development trend of maintenance, devise a kind of highly integrated electrohydraudic servomechanism, it is especially electromechanical
The developing direction of liquid actuator.
The content of the invention
For above-mentioned deficiency, the invention provides a kind of this highly integrated pressure balance type deep-sea electro-hydraulic servo machine
Structure.
The present invention is achieved by the following technical solutions：A kind of highly integrated pressure balance type deep-sea electro-hydraulic servo machine
Structure, is by rod end ball pivot, external part piston rod, cylinder combination part, valve block and pressure equaliser sub-assembly, dummy piston installation
Cylinder, protective cover, electric interfaces, emergent pipe joint, dummy piston, air bleeding valve, pump nozzle, gate gurgle valve, gudgeon, hydraulic cylinder, pressure
Compensator, user installation interface, piston rod dynamic sealing, servomotor, plunger pump, valve block main body part, balanced valve, by-passing valve, watch
Take valve, model selection valve, piston rod pressure balance cylinder and cylinder bottom head, rod end ball pivot threaded connection hole, piston installation place, pressure put down
Weighing apparatus piston rod installation end, pressure balancing piston bar threaded connection hole, oscillating bearing, piston, piston dynamic sealing, magnet ring support, position
Displacement sensor fixing end, displacement transducer fixing hole, pressure balance oil hole, baffle plate, pressure balancing piston bar, internal oil passages hole
Composition, it is characterised in that：Rod end ball pivot is arranged on external part piston rod by rod end ball pivot threaded connection hole, cylinder combination
Together with part is connected by screw with valve block and pressure equaliser sub-assembly, valve block and pressure equaliser sub-assembly and balance
Piston mounting cylinder is connected by screw together, and dummy piston is arranged in dummy piston mounting cylinder, and rear and front end is sea respectively
Water and pressure balance fluid, pressure balance fluid are entered in dummy piston mounting cylinder by pressure balance oil hole, for whole
The pressure balance of system, dummy piston, which installs tube rear end uniform welding, four baffle plates, and pipe joint of meeting an urgent need is arranged on piston rod pressure
On dynamic balance cylinder and cylinder bottom head, electric interfaces and protective cover are arranged on user installation interface, the row of being provided with inside protective cover
Air valve, pump nozzle, gate gurgle valve.
The external part piston rod and pressure balancing piston the bar part that to be two different, piston are arranged on piston installation place
On, pressure balancing piston bar installation end is connected with pressure balancing piston bar threaded connection hole, while to 31 fixations of piston
Connection function, oscillating bearing is arranged on rod end ball pivot, and three road piston dynamic sealings, pressure balancing piston bar are provided with piston
One end sets pressure balancing piston bar threaded connection hole, and one end is provided with aperture and the displacement transducer shifting that suitable magnet ring support is installed
Dynamic hole, magnet ring support is arranged on pressure balancing piston bar, and displacement transducer fixing end is connected with magnet ring support, meanwhile, displacement
Sensor fixing end is secured in place on displacement sensor fixing hole.
The cylinder combination part by hydraulic cylinder and pressure balancing tank global design, two gudgeons be separately mounted to hydraulic cylinder and
On pressure balancing tank, user installation interface and pressure balancing tank global design, pressure balancing tank in system as accumulator and
Store balance fluid to use, three road piston rod dynamic sealings are designed with the port of hydraulic cylinder.
The valve block and pressure equaliser sub-assembly are whole by piston rod pressure balance cylinder and cylinder bottom head and valve block main body part
Body is designed, and plunger pump is direct-connected without pipeline with valve block main body part, and DC brushless motor is connected with plunger pump, two balances
Valve, by-passing valve, servo valve and two model selection valves are arranged on valve block main body part, and servo valve one end connects with emergent pipe joint
Connect, one end is connected with a model selection valve, is used as emergency power device.
The pressure balancing tank internal balance high-voltage oil liquid passes through internal oil passages with piston rod pressure balance cylinder and cylinder bottom head
Hole insertion.
The usefulness of the invention is：Replace former normal using novel high integrated pressure balanced type deep-sea electrohydraudic servomechanism
Valve control servo control mechanism is advised, as a result of power-by-wire, system architecture is simple, and power to weight ratio is big, efficiency high, while abandoning original
Pressure-resistance structure, using pressure balanced topology layout, while thought is obtained using double redundancy designs, so that can to the height of deep-sea steering wheel
By high-power fax servo start technology and reduction energy resource consumption, mitigation volume weight, maintenance is easily installed there is provided fine
Technical support, and when one channel failure of system, can be promptly isolated by model selection valve, another passage is individually completed
Task, reliability, security are greatly improved, so that reliability, life-span and security are greatly improved.
Brief description of the drawings
Accompanying drawing 1 is deep-sea electrohydraudic servomechanism overall structure figure；
Accompanying drawing 2 is deep-sea electrohydraudic servomechanism construction profile；
Accompanying drawing 3 is deep-sea electrohydraudic servomechanism local structural graph；
Accompanying drawing 4 is the cylinder combination part structure chart of deep-sea electrohydraudic servomechanism；
Accompanying drawing 5 is the cylinder combination part local structural graph of deep-sea electrohydraudic servomechanism；
Accompanying drawing 6 is the valve block and pressure equaliser assembling unit structure figure of deep-sea electrohydraudic servomechanism；
Accompanying drawing 7 is the external part piston rod construction figure of deep-sea electrohydraudic servomechanism；
Accompanying drawing 8 is the pressure balancing piston bar structure chart of deep-sea electrohydraudic servomechanism；
Accompanying drawing 9 is the piston rod integral installation structure chart of deep-sea electrohydraudic servomechanism；
Accompanying drawing 10 is the dummy piston mounting cylinder structure chart of deep-sea electrohydraudic servomechanism.
In figure, 1, rod end ball pivot, 2, external part piston rod, 3, cylinder combination part, 4, valve block and pressure equaliser combination
Part, 5, dummy piston mounting cylinder, 6, protective cover, 7, electric interfaces, 8, emergent pipe joint, 9, dummy piston, 10, air bleeding valve, 11,
Pump nozzle, 12, gate gurgle valve, 13, gudgeon, 14, hydraulic cylinder, 15, pressure balancing tank, 16, user installation interface, 17, piston rod moves
Sealing, 18, servomotor, 19, plunger pump, 20, valve block main body part, 21, balanced valve, 22, by-passing valve, 23, servo valve, 24, mould
Formula selector valve, 25, piston rod pressure balance cylinder and cylinder bottom head, 26, rod end ball pivot threaded connection hole, 27, piston installation place, 28,
Pressure balancing piston bar installation end, 29, pressure balancing piston bar threaded connection hole, 30, oscillating bearing, 31, piston, 32, piston
Dynamic sealing, 33, magnet ring support, 34, displacement transducer fixing end, 35, displacement transducer fixing hole, 36, pressure balance oil hole,
37th, baffle plate, 38, pressure balancing piston bar, 39, internal oil passages hole.
Embodiment
A kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, is by rod end ball pivot 1, external part piston rod 2, cylinder
Cylinder sub-assembly 3, valve block and pressure equaliser sub-assembly 4, dummy piston mounting cylinder 5, protective cover 6, electric interfaces 7, emergent pipe
Joint 8, dummy piston 9, air bleeding valve 10, pump nozzle 11, gate gurgle valve 12, gudgeon 13, hydraulic cylinder 14, pressure balancing tank 15, user
Mounting interface 16, piston rod dynamic sealing 17, servomotor 18, plunger pump 19, valve block main body part 20, balanced valve 21, by-passing valve 22,
Servo valve 23, model selection valve 24, piston rod pressure balance cylinder and cylinder bottom head 25, rod end ball pivot threaded connection hole 26, piston peace
27 at dress, it is pressure balancing piston bar installation end 28, pressure balancing piston bar threaded connection hole 29, oscillating bearing 30, piston 31, living
Fill in dynamic sealing 32, magnet ring support 33, displacement transducer fixing end 34, displacement transducer fixing hole 35, pressure balance oil hole 36,
Baffle plate 37, pressure balancing piston bar 38, internal oil passages hole 39 are constituted, it is characterised in that：Rod end ball pivot 1 passes through rod end ball pivot spiral shell
Line connecting hole 26 is arranged on external part piston rod 2, and cylinder combination part 3 passes through spiral shell with valve block and pressure equaliser sub-assembly 4
Nail links together, together with valve block and pressure equaliser sub-assembly 4 are connected by screw with dummy piston mounting cylinder 5, puts down
The piston 9 that weighs is arranged in dummy piston mounting cylinder 5, and rear and front end is seawater and pressure balance fluid, pressure balance fluid respectively
Entered by pressure balance oil hole 36 in dummy piston mounting cylinder 5, for the pressure balance of whole system, dummy piston is installed
5 rear end uniform weldings of cylinder have four baffle plates 37, and pipe joint 8 of meeting an urgent need is arranged on piston rod pressure balance cylinder and cylinder bottom head 25, electricity
Gas interface 7 and protective cover 6 are arranged on user installation interface 16, be provided with inside protective cover 6 air bleeding valve 10, pump nozzle 11,
Gate gurgle valve 12.
The external part piston rod 2 and pressure balancing piston bar 38 part that to be two different, piston 31 are arranged on piston
On installation place 27, pressure balancing piston bar installation end 28 is connected with pressure balancing piston bar threaded connection hole 29, while right
Piston 31, which serves, to be fixedly connected, and oscillating bearing 30 is arranged on rod end ball pivot 1, and three road pistons are provided with piston 31 and move close
Envelope 32, one end of pressure balancing piston bar 38 sets pressure balancing piston bar threaded connection hole 29, and one end is provided with suitable magnet ring support
33 apertures installed and displacement transducer moving hole, magnet ring support 33 are arranged on pressure balancing piston bar 38, displacement transducer
Fixing end 34 is connected with magnet ring support 33, meanwhile, displacement transducer fixing end 34 is secured in place on displacement sensor fixing hole 35.
Hydraulic cylinder 14 and the global design of pressure balancing tank 15, two gudgeons 13 are separately mounted to by the cylinder combination part 3
On hydraulic cylinder 14 and pressure balancing tank 15, user installation interface 16 and the global design of pressure balancing tank 15, pressure balancing tank 15 exist
As accumulator and store balance fluid and use in system, three road piston rod dynamic sealings 17 are designed with the port of hydraulic cylinder 14.
The valve block and pressure equaliser sub-assembly 4 are by piston rod pressure balance cylinder and cylinder bottom head 25 and valve block main body part
20 global designs are formed, and plunger pump 19 is direct-connected without pipeline with valve block main body part 20, and DC brushless motor 18 is driven with plunger pump 19
Connection, two balanced valves 21, by-passing valve 22, servo valve 23 and two model selection valves 24 are arranged on valve block main body part 20, are watched
Take the one end of valve 23 to be connected with emergent pipe joint 8, one end is connected with a model selection valve 24, is used as emergency power device.
The internal balance high-voltage oil liquid of pressure balancing tank 15 passes through inside with piston rod pressure balance cylinder and cylinder bottom head 25
The insertion of oil circuit hole 39.
The device operation principle：Servomotor 18 drives plunger pump 19 to rotate, and external part piston rod 2 is acted, whole system
Fluid flowed in valve block main body part 20 and valve block and pressure equaliser sub-assembly 4, without pipe connection, when aggressive device hair
Raw failure, two opposite actions of model selection valve 24, servo valve starts, and connects emergent pipe joint by outside fluid, it is ensured that device
Regular event.
To ensure internal and external pressure balance, high-voltage oil liquid is filled with internal system, the present apparatus is by valve block and pressure equaliser
The pressure balancing piston bar of sub-assembly 4 and external part piston rod 2 is placed on inside high-voltage oil liquid, passes through dummy piston 9 and external sea
The method of water segregation, realizes the pressure balance of system.
For the ordinary skill in the art, according to the teachings of the present invention, do not depart from the present invention principle with
In the case of spirit, changes, modifications, replacement and the modification carried out to embodiment still fall within protection scope of the present invention it
It is interior.
Claims (5)
1. a kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, is by rod end ball pivot, external part piston rod, cylinder barrel group
Component, valve block and pressure equaliser sub-assembly, dummy piston mounting cylinder, protective cover, electric interfaces, emergent pipe joint, balance
Piston, air bleeding valve, pump nozzle, gate gurgle valve, gudgeon, hydraulic cylinder, pressure balancing tank, user installation interface, piston rod dynamic sealing, watch
Take motor, plunger pump, valve block main body part, balanced valve, by-passing valve, servo valve, model selection valve, piston rod pressure balance cylinder and cylinder
Bottom, rod end ball pivot threaded connection hole, piston installation place, pressure balancing piston bar installation end, pressure balancing piston bar screw thread connect
Connect hole, oscillating bearing, piston, piston dynamic sealing, magnet ring support, displacement transducer fixing end, displacement transducer fixing hole, pressure
Balance oil hole, baffle plate, pressure balancing piston bar, internal oil passages hole are constituted, it is characterised in that：Rod end ball pivot passes through rod end ball
Cut with scissors threaded connection hole to be arranged on external part piston rod, cylinder combination part passes through screw with valve block and pressure equaliser sub-assembly
Link together, together with valve block and pressure equaliser sub-assembly are connected by screw with dummy piston mounting cylinder, balance is lived
Plug is arranged in dummy piston mounting cylinder, and rear and front end is seawater and pressure balance fluid respectively, and pressure balance fluid passes through pressure
Dynamic balance oil hole enters in dummy piston mounting cylinder, and for the pressure balance of whole system, it is equal that dummy piston installs tube rear end
Even to be welded with four baffle plates, pipe joint of meeting an urgent need is arranged on piston rod pressure balance cylinder and cylinder bottom head, electric interfaces and protective cover
On user installation interface, air bleeding valve, pump nozzle, gate gurgle valve are installed inside protective cover.
2. as claimed in claim 1 obtain a kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, it is characterised in that：It is described
External part piston rod and pressure balancing piston the bar part that to be two different, piston are arranged on piston installation place, pressure balance
Piston rod installation end is connected with pressure balancing piston bar threaded connection hole, is fixedly connected while serving to piston 31, closes
Bearings are arranged on rod end ball pivot, and three road piston dynamic sealings are provided with piston, and pressure balancing piston bar one end sets pressure
Lower pressure balance piston bar threaded connection hole, one end is provided with aperture and the displacement transducer moving hole that suitable magnet ring support is installed, magnet ring
Support is arranged on pressure balancing piston bar, and displacement transducer fixing end is connected with magnet ring support, meanwhile, displacement transducer is fixed
End is secured in place on displacement sensor fixing hole.
3. as claimed in claim 1 obtain a kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, it is characterised in that：It is described
Hydraulic cylinder and pressure balancing tank global design, two gudgeons are separately mounted to hydraulic cylinder and pressure balancing tank by cylinder combination part
On, user installation interface and pressure balancing tank global design, pressure balancing tank as accumulator and store equilibrium oil in system
Liquid is used, and three road piston rod dynamic sealings are designed with the port of hydraulic cylinder.
4. as claimed in claim 1 obtain a kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, it is characterised in that：It is described
Valve block and pressure equaliser sub-assembly form piston rod pressure balance cylinder and cylinder bottom head with valve block main body part global design, post
Fill in pump and valve block main body part direct-connected without pipeline, DC brushless motor is connected with plunger pump, two balanced valves, by-passing valves, watch
Take valve and two model selection valves are arranged on valve block main body part, servo valve one end is connected with emergent pipe joint, one end and one
Model selection valve is connected, and is used as emergency power device.
5. as claimed in claim 1 obtain a kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism, it is characterised in that：It is described
Pressure balancing tank internal balance high-voltage oil liquid passes through the insertion of internal oil passages hole with piston rod pressure balance cylinder and cylinder bottom head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710444054.0A CN107202048B (en) | 2017-06-13 | 2017-06-13 | A kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710444054.0A CN107202048B (en) | 2017-06-13 | 2017-06-13 | A kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism |
Publications (2)
| Publication Number | Publication Date |
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| CN107202048A true CN107202048A (en) | 2017-09-26 |
| CN107202048B CN107202048B (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710444054.0A Expired - Fee Related CN107202048B (en) | 2017-06-13 | 2017-06-13 | A kind of highly integrated pressure balance type deep-sea electrohydraudic servomechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895048A (en) * | 2018-09-20 | 2018-11-27 | 北京航空航天大学 | One kind being based on bellows pressure balance formula deep-sea hydraulic actuator |
| CN109026898A (en) * | 2018-09-20 | 2018-12-18 | 北京航空航天大学 | A kind of integrated sealing structure of hydraulic actuator |
| CN109340220A (en) * | 2018-09-06 | 2019-02-15 | 北京工业大学 | Deep-sea electricity consumption hydrostatic actuator |
| CN111911481A (en) * | 2020-08-14 | 2020-11-10 | 燕山大学 | Integrated electro-hydraulic actuator adopting rotary oil distribution mode |
| CN113007478A (en) * | 2021-03-29 | 2021-06-22 | 重庆大学 | Mechanical-electrical-oil-way integrated module interface for variable-configuration multi-body water surface robot |
| CN115203854A (en) * | 2022-07-26 | 2022-10-18 | 西南交通大学 | Intelligent design system and method for electric hydrostatic actuator |
| CN115978234A (en) * | 2023-01-05 | 2023-04-18 | 宁波克泰液压有限公司 | Throttle type three-position five-way electromagnetic valve |
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| EP1407838A2 (en) * | 2002-10-11 | 2004-04-14 | Rothenberger Aktiengesellschaft | Expanding tool for hollow bodies with an electrohydraulic drive |
| CN201382042Y (en) * | 2009-03-16 | 2010-01-13 | 四川川润股份有限公司 | Segmental-type piston double-action short-stroke hydraulic cylinder device |
| CN201636113U (en) * | 2009-12-31 | 2010-11-17 | 佛山市禅城区永恒液压机械有限公司 | High-integration servo oil cylinder |
| CN201810604U (en) * | 2010-07-02 | 2011-04-27 | 西安华科航空液压有限公司 | Integrated servo actuator |
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| CN105257616A (en) * | 2015-11-10 | 2016-01-20 | 湖北航天技术研究院总体设计所 | Integrated electro-hydraulic servo driver structure |
| DE102015213695A1 (en) * | 2014-08-13 | 2016-02-18 | Robert Bosch Gmbh | Electrohydraulic system for underwater use and process valve with such electrohydraulic system |
| CN105398961A (en) * | 2015-12-22 | 2016-03-16 | 浙江大学 | Test stand for video-ranging offshore platform crane heave compensation control system |
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2017
- 2017-06-13 CN CN201710444054.0A patent/CN107202048B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1063332A (en) * | 1991-01-15 | 1992-08-05 | 汪朴澄 | Differential balancing lever oil-pumping machine of same well |
| EP1407838A2 (en) * | 2002-10-11 | 2004-04-14 | Rothenberger Aktiengesellschaft | Expanding tool for hollow bodies with an electrohydraulic drive |
| CN201382042Y (en) * | 2009-03-16 | 2010-01-13 | 四川川润股份有限公司 | Segmental-type piston double-action short-stroke hydraulic cylinder device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340220A (en) * | 2018-09-06 | 2019-02-15 | 北京工业大学 | Deep-sea electricity consumption hydrostatic actuator |
| CN108895048A (en) * | 2018-09-20 | 2018-11-27 | 北京航空航天大学 | One kind being based on bellows pressure balance formula deep-sea hydraulic actuator |
| CN109026898A (en) * | 2018-09-20 | 2018-12-18 | 北京航空航天大学 | A kind of integrated sealing structure of hydraulic actuator |
| CN109026898B (en) * | 2018-09-20 | 2020-04-10 | 北京航空航天大学 | Integral sealing structure of hydraulic actuator |
| CN111911481A (en) * | 2020-08-14 | 2020-11-10 | 燕山大学 | Integrated electro-hydraulic actuator adopting rotary oil distribution mode |
| CN111911481B (en) * | 2020-08-14 | 2021-10-22 | 燕山大学 | Integrated electro-hydraulic actuator adopting rotary oil distribution mode |
| CN113007478A (en) * | 2021-03-29 | 2021-06-22 | 重庆大学 | Mechanical-electrical-oil-way integrated module interface for variable-configuration multi-body water surface robot |
| CN115203854A (en) * | 2022-07-26 | 2022-10-18 | 西南交通大学 | Intelligent design system and method for electric hydrostatic actuator |
| CN115203854B (en) * | 2022-07-26 | 2023-10-03 | 西南交通大学 | Intelligent design system and method for electric hydrostatic actuator |
| CN115978234A (en) * | 2023-01-05 | 2023-04-18 | 宁波克泰液压有限公司 | Throttle type three-position five-way electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107202048B (en) | 2018-05-29 |
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