CN109027395A - The control system and adjustment type actuator of electro-hydraulic linkage - Google Patents
The control system and adjustment type actuator of electro-hydraulic linkage Download PDFInfo
- Publication number
- CN109027395A CN109027395A CN201810911150.6A CN201810911150A CN109027395A CN 109027395 A CN109027395 A CN 109027395A CN 201810911150 A CN201810911150 A CN 201810911150A CN 109027395 A CN109027395 A CN 109027395A
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- hydraulic
- piston rod
- electro
- hydraulic fluid
- control system
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- 239000012530 fluid Substances 0.000 claims abstract description 35
- 239000003921 oil Substances 0.000 claims description 46
- 230000033001 locomotion Effects 0.000 claims description 20
- 239000002828 fuel tank Substances 0.000 claims description 16
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The present invention provides a kind of control system of electro-hydraulic linkage and adjustment type actuators, wherein, the control system of electro-hydraulic linkage includes: electrohydraulic control unit, comprising: a two-way oil pump, it is driven by motor, two hydraulic fluid port respectively with two ports P of a hydraulic lock are one-to-one is connected, in the hydraulic lock two ports A connect respectively after a throttle valve with the two chambers of oil cylinder are one-to-one is connected.The control system and adjustment type actuator of electro-hydraulic linkage provided by the invention, it executes mechanical part and is used as gearing form in such a way that oil cylinder and shift fork combine, utilize the structure type of rack-and-pinion cylinder, the transmission of rack-and-pinion cylinder middle rack is become into shift fork transmission, it is at low cost, realize adjustment type control again.
Description
Technical field
The present invention relates to actuation technologies field, the control system and adjustment type actuator of especially a kind of electro-hydraulic linkage.
Background technique
Industry is automated in field of fluid control and valve, valve actuator is to realize valve stroking, automatic control and remote control not
The valve actuator that can lack.Since control technique, control require to be continuously improved, valve actuator is in electrical explosion proof, movement
Speed, response time etc., Electric Actuator have been unable to meet requirement, pneumatic, surge and gas-liquid linked and electro-hydraulic linkage
Thus equal actuators are applied and are given birth to.
Electro-hydraulic linkage actuator is distinguished according to mechanical implementations, mainly include shift fork be driven electro-hydraulic linkage actuator with
The electro-hydraulic linkage actuator of rack pinion, wherein, it can be achieved that adjustment type control in the electro-hydraulic linkage actuator of rack pinion
System, but oil cylinder manufacturing cost is high；Shift fork is driven electro-hydraulic linkage actuator, most of to apply to out although manufacturing cost is cheap
Pass type control, it is not easy to be made into adjustment type control.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of control system of electro-hydraulic linkage and include the control system
Adjustment type control may be implemented in adjustment type actuator, and cost is relatively low.
The present invention provides a kind of control systems of electro-hydraulic linkage, comprising: shift fork drive mechanism, oil cylinder and electrichydraulic control list
Member, the oil cylinder include a piston rod and the chamber for being respectively arranged at the piston rod both ends, and the electrohydraulic control unit is logical
The amount of the two indoor hydraulic oil of chamber of control is crossed to control the linear motion of the piston rod, the piston rod with it is described
The connection of shift fork drive mechanism, the linear motion of the piston rod are changed into shift fork axle by the shift fork drive mechanism with swing angle
Movement；
Wherein, the electrohydraulic control unit includes: a two-way oil pump, is driven by motor, two hydraulic fluid port respectively with a liquid
It presses two ports P of lock are one-to-one to be connected, is gone here and there respectively in the hydraulic lock with one-to-one two ports A in two ports P
Join after a throttle valve with two chambers are one-to-one is connected, in two chambers, hydraulic oil and the piston rod
Contact area is equal, further includes that hydraulic fluid chamber is not communicated with the atmosphere and can provide a fuel tank of the low-pressure hydraulic oil with pressure, institute
Two hydraulic fluid ports for stating two-way oil pump are connected respectively to be connected after a check valve with the hydraulic fluid port of the fuel tank, further includes two overflows
Valve, each described overflow valve one end are connected between the port A of the hydraulic lock and the throttle valve, and the other end is connected to institute
The hydraulic fluid port for stating fuel tank further includes a circuit control module, is electrically connected with the motor, for controlling the electric motor starting or stopping
It only, and, further include a hand-held block forward or reverse, the hand-held block includes that a manual pump and a 3-position 4-way change
To valve, the first hydraulic fluid port on the three position four-way directional control valve is connected to by the manual pump with the hydraulic fluid port of the fuel tank, thereon
Second hydraulic fluid port is connected to the hydraulic fluid port of the fuel tank, third hydraulic fluid port and the 4th hydraulic fluid port thereon respectively with two P of the hydraulic lock
Port is one-to-one to be connected.
Further,
The shift fork drive mechanism includes:
Pull-fork assembly comprising cylindric rotating cylinder, for connecting with shaft, fixed on lateral wall there are two parallel to dial
Forks piece offers sliding slot on each described shifting fork piece, and the sliding slot is rectangle strip hole, and it is straight that axis is located at the rotating cylinder
On the extended line of diameter；
One casing, described sleeve pipe are located between two shifting fork pieces, for the shell through shift fork case and solid with it
Fixed, described sleeve pipe is hollow structure, and the shape of piston rod described in the shape of cavity matches, opposite sides point in the middle
Locating aperture is not offered, and the locating aperture extends along described sleeve pipe length direction；
Two sliding blocks；
And a pin shaft, the diameter of the pin shaft and the width of the locating aperture match；
The piston rod is sheathed in the cavity of described sleeve pipe, and can be transported along the length direction reciprocating linear of described sleeve pipe
Dynamic, the pin shaft runs through the piston rod and two locating apertures, and described sleeve pipe, the pin shaft are protruded in its both ends
, can be along the length direction linear reciprocating motion of described sleeve pipe in the locating aperture under the drive of the piston rod, two
The slide block set is set to the both ends of the pin shaft, also, the sliding block can rotate centered on the pin shaft, the sliding block setting
It, can be along the sliding slot linear reciprocating motion in the sliding slot.
Further, there are two keyways for setting in the internal side wall of the rotating cylinder, and two keyways are about the cunning
The axisymmetrical of slot is distributed, and is keyed for being formed with the shaft.
Further, the shape of the cooperation section of the piston rod and described sleeve pipe is cylinder.
Further, the shell of described sleeve pipe and shift fork case cooperation section is cylinder, is bolted on the outside of the cooperation section
Fastener, the fastener push against the shell of shift fork case.
Further, in electrohydraulic control unit, the hydraulic lock, throttle valve, check valve and overflow valve are integrated in a liquid
On pressure valve block.
The present invention also provides a kind of actuator, the control system including above-mentioned electro-hydraulic linkage.
The control system and adjustment type actuator of electro-hydraulic linkage provided by the invention execute mechanical part using oil cylinder and dial
The mode combined is pitched to be driven rack-and-pinion cylinder middle rack using the structure type of rack-and-pinion cylinder as gearing form
Become shift fork transmission, it is at low cost, realize adjustment type control again.Due to the structure using symmetrical piston rod, two cavity area of oil cylinder
It is equal, it is easy to control speed.Hydraulic control system is controlled using enclosed, and main oil feed pump is controlled using two-way pump, and output flow is steady
It is fixed, the oil cylinder velocity-stabilization of promotion；It can control oil liquid using hydraulic control one-way valve and throttle valve combination and cut off and flow in time
Big minor adjustment is measured, is controlled convenient for control valve degree of regulation, due to being almost isolated from the outside world using enclosed control oil liquid, by the external world
Interfere small, fuel tank volume reduces therewith, and requirements of installation space is small, and function combination is flexible and changeable.System response time is fast, reflection essence
It is quasi-.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of oil cylinder and electrohydraulic control unit in the present invention；
Fig. 2 is the three dimensional structure diagram of shift fork case in the present invention；
Fig. 3 is the main view of shift fork case in the present invention；
Fig. 4 is the A-A cross-sectional view in Fig. 3.
In figure, 100. two-way oil pumps, 200. motors, 300. hydraulic locks, 400. throttle valves, 500. oil cylinders, 600. check valves,
700. overflow valves, 800. fuel tanks, 900. manual pumps, 1000. three position four-way directional control valves, 1100. circuit control modules,
1. rotating cylinder, 2. shifting fork pieces, 3. sliding slots, 4. casings, 5. locating apertures, 6. sliding blocks, 7. pin shafts, 8. fasteners, 9. is living
Stopper rod, the shell of 10. shift fork casees.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
A kind of control system of electro-hydraulic linkage, comprising: shift fork drive mechanism, oil cylinder and electrohydraulic control unit, the oil cylinder
Including a piston rod and the chamber for being respectively arranged at the piston rod both ends, the electrohydraulic control unit passes through two institutes of control
The amount of the indoor hydraulic oil of chamber is stated to control the linear motion of the piston rod of the oil cylinder, the piston rod with described group
Drive mechanism connection is pitched, the linear motion of the piston rod is changed into shift fork axle by the shift fork drive mechanism with swing angle
Movement；
Wherein, as shown in Figure 1, the electrohydraulic control unit includes:
One two-way oil pump 100, is driven by motor 200, provides flow and pressure for electrohydraulic control unit, two hydraulic fluid port point
Not with two ports P of a hydraulic lock 300 are one-to-one is connected, in the hydraulic lock 300 with two ports P one-to-one two
A port A connect respectively after a throttle valve 400 with the two chambers of oil cylinder 500 are one-to-one is connected, hydraulic lock 300 is for locking
It brakes in time, and reverse load is prevented to be transmitted to two-way oil pump 100 in the position of piston rod in stand oil cylinder 500；
Hydraulic lock 300 is a kind of conventional hydraulic component with self-locking function, when hydraulic lock 300 is closed, in hydraulic lock 300
Two groups are turned off and cannot be interconnected between the one-to-one port P, A respectively, so that hydraulic lock 300 can be by oil cylinder 500
Two chambers in hydraulic oil be locked in two chambers so that oil cylinder 500 can not act；Only to the one of hydraulic lock 300
After a port P conveying high-pressure hydraulic oil just hydraulic lock 300 can open, it may be assumed that make the one-to-one port P, A difference of two groups of difference
It is interconnected, the oil suction chamber ability oil inlet of such oil cylinder 500, oil outlet chamber could be fuel-displaced；
Throttle valve 400 is used to control the movement velocity of piston rod in oil cylinder 500；
In the two chambers of the oil cylinder 500, hydraulic oil is equal with the contact area of the piston rod, is easy to control piston
The speed of bar；
It further include that hydraulic fluid chamber is not communicated with the atmosphere and can provide a fuel tank 800 of the low-pressure hydraulic oil with pressure, it is described
Two hydraulic fluid ports of two-way oil pump 100 are connected respectively to be connected after a check valve 600 with the hydraulic fluid port of the fuel tank 800, check valve 600
For supplementing the flow of two-way oil pump 100；
It further include two overflow valves 700, each described 700 one end of overflow valve is connected to the port A of the hydraulic lock 300
Between the throttle valve 400, the other end is connected to the hydraulic fluid port of the fuel tank 800, and overflow valve 700 is for controlling in oil cylinder 500
The pressure of hydraulic oil achievees the purpose that control actuator torque；
Further include a circuit control module 1100, be electrically connected with the motor 200, is opened for controlling the motor 200
Dynamic or stopping, and, forward or reverse；
It further include a hand-held block, the hand-held block includes a manual pump 900 and a three position four-way directional control valve 1000,
The first hydraulic fluid port on the three position four-way directional control valve 1000 is connected to by the manual pump 900 with the hydraulic fluid port of the fuel tank 800,
On the second hydraulic fluid port be connected to the hydraulic fluid port of the fuel tank 800, third hydraulic fluid port and the 4th hydraulic fluid port thereon respectively with the hydraulic lock
300 two ports P are one-to-one to be connected.In emergency circumstances secondary dynamic such as when hand-held block provides power-off or oil circuit exception
Power.
When work, circuit control module 1100 controls motor 200 and rotates forward, and it is hydraulic that motor 200 drives two-way oil pump 100 to pump out
Oil, under certain oil pressure, hydraulic lock 300 is opened, and hydraulic oil is after throttle valve 400 regulates speed, into oil cylinder 500
Side pushes piston rod to move to the other side, after reaching predetermined position, closes motor 200, two-way oil pump 100 stops pump oil, liquid
The decline of pressure oil oil pressure, hydraulic lock 300 are closed, and piston rod position is fixed.Similarly, when needing piston rod counter motion, circuit control
Module 1100 controls motor 200 and inverts.Through the above steps, the purpose of the linear motion of regulating piston bar is realized.
In one optional embodiment of the present embodiment, in electrohydraulic control unit, hydraulic lock 300, throttle valve 400, check valve
500 and overflow valve 700 be integrated on a hydraulic valve block.
In one optional embodiment of the present embodiment, shift fork drive mechanism, as shown in figs. 2 to 4, comprising:
Pull-fork assembly, including cylindric rotating cylinder 1, for connecting with shaft, fixed on lateral wall there are two parallel to dial
Forks piece 2 offers sliding slot 3 on each described shifting fork piece 2, and the sliding slot 3 is rectangle strip hole, and axis is located at described turn
On the extended line of 1 diameter of cylinder；
One casing 4, described sleeve pipe 4 are located between two shifting fork pieces 2, for the shell 10 through shift fork case and with
It is fixed, and described sleeve pipe 4 is hollow structure, and the shape of piston rod 9 described in the shape of cavity matches, in the middle opposite
Two sides offer locating aperture 5 respectively, and the locating aperture 5 extends along 4 length direction of described sleeve pipe；
Two sliding blocks 6；
And a pin shaft 7, the diameter of the pin shaft 7 and the width of the locating aperture 5 match；
The piston rod 9 is sheathed in the cavity of described sleeve pipe 4, and can be along the length direction reciprocating linear of described sleeve pipe 4
Movement, the pin shaft 7 runs through the piston rod 9 and two locating apertures 5, and described sleeve pipe 4, institute are protruded in its both ends
Pin shaft 7 is stated under the drive of the piston rod 9, in the locating aperture 5, can along described sleeve pipe 4 length direction it is back and forth straight
Line movement, two sliding blocks 6 are sheathed on the both ends of the pin shaft 7, also, the sliding block 6 can turn centered on the pin shaft 7
Dynamic, the sliding block 6 is set in the sliding slot 3, can be along 3 linear reciprocating motion of sliding slot.
In one optional embodiment of the present embodiment, the shape of the piston rod 9 and the cooperation section of described sleeve pipe 4 is cylinder
Shape.
In one optional embodiment of the present embodiment, the shell 10 of described sleeve pipe 4 and shift fork case cooperates section to be cylinder,
Fastener 8 is bolted on the outside of the cooperation section, the fastener 8 pushes against the shell 10 of shift fork case.Realize casing 4 and shift fork case
Being detachably connected between shell 10.
In one optional embodiment of the present embodiment, the keyway there are two settings in the internal side wall of the rotating cylinder 1, two
The keyway is distributed about the axisymmetrical of the sliding slot, is keyed for being formed with the shaft.
The present invention also provides a kind of adjustment type actuator, the control system including above-mentioned electro-hydraulic linkage.Because having electricity
The all technical features of the control system of liquid linkage, therefore, actuator also has whole technologies of the control system of electro-hydraulic linkage
Effect.
The scope of protection of the present invention is not limited to this.Those skilled in the art are made equivalent on the basis of the present invention
Substitution or transformation, it is within the scope of the present invention.Protection scope of the present invention is subject to claims.
Claims (7)
1. a kind of control system of electro-hydraulic linkage characterized by comprising shift fork drive mechanism, oil cylinder and electrohydraulic control unit,
The oil cylinder includes a piston rod and the chamber for being respectively arranged at the piston rod both ends, and the electrohydraulic control unit passes through control
The amount of the two indoor hydraulic oil of chamber is made to control the linear motion of the piston rod, the piston rod and the shift fork
Drive mechanism connection, the linear motion of the piston rod are changed into shift fork axle by the shift fork drive mechanism with the fortune of swing angle
It is dynamic；
Wherein, the electrohydraulic control unit includes: a two-way oil pump, is driven by motor, two hydraulic fluid port respectively with a hydraulic lock
Two ports P it is one-to-one be connected, connect one in the hydraulic lock respectively with one-to-one two ports A in two ports P
After a throttle valve with two chambers are one-to-one is connected, in two chambers, the contact of hydraulic oil and the piston rod
Area equation further includes that hydraulic fluid chamber is not communicated with the atmosphere and can provide a fuel tank of the low-pressure hydraulic oil with pressure, described double
It is connected after connecting a check valve respectively to two hydraulic fluid ports of oil pump with the hydraulic fluid port of the fuel tank, further includes two overflow valves, often
One described overflow valve one end is connected between the port A of the hydraulic lock and the throttle valve, and the other end is connected to the oil
The hydraulic fluid port of case further includes a circuit control module, is electrically connected with the motor, for controlling the electric motor starting or stopping,
It and forward or reverse, further include a hand-held block, the hand-held block includes that a manual pump and a 3-position 4-way commutate
Valve, the first hydraulic fluid port on the three position four-way directional control valve are connected to by the manual pump with the hydraulic fluid port of the fuel tank, and thereon
Two hydraulic fluid ports are connected to the hydraulic fluid port of the fuel tank, third hydraulic fluid port and the 4th hydraulic fluid port thereon respectively with two ends P of the hydraulic lock
Mouth is one-to-one to be connected.
2. the control system of electro-hydraulic linkage as described in claim 1, which is characterized in that
The shift fork drive mechanism includes:
Pull-fork assembly comprising cylindric rotating cylinder, for connecting with shaft, fixed on lateral wall there are two parallel shift forks
Piece offers sliding slot on each described shifting fork piece, and the sliding slot is rectangle strip hole, and axis is located at the basket diameter
Extended line on；
One casing, described sleeve pipe are located between two shifting fork pieces, for the shell through shift fork case and are secured to, institute
Stating casing is hollow structure, and the shape of piston rod described in the shape of cavity matches, and opposite sides in the middle is opened respectively
Equipped with locating aperture, the locating aperture extends along described sleeve pipe length direction；
Two sliding blocks；
And a pin shaft, the diameter of the pin shaft and the width of the locating aperture match；
The piston rod is sheathed in the cavity of described sleeve pipe, and can be along the length direction linear reciprocating motion of described sleeve pipe, institute
Pin shaft is stated through the piston rod and two locating apertures, and described sleeve pipe is protruded at its both ends, the pin shaft is in institute
It, can be along the length direction linear reciprocating motion of described sleeve pipe, described in two in the locating aperture under the drive for stating piston rod
Slide block set is set to the both ends of the pin shaft, also, the sliding block can rotate centered on the pin shaft, and the sliding block is set to institute
It states in sliding slot, it can be along the sliding slot linear reciprocating motion.
3. the control system of electro-hydraulic linkage as claimed in claim 2, which is characterized in that set in the internal side wall of the rotating cylinder
It sets there are two keyway, two keyways are distributed about the axisymmetrical of the sliding slot, are keyed for being formed with the shaft.
4. the control system of electro-hydraulic linkage as claimed in claim 2, which is characterized in that the piston rod and described sleeve pipe are matched
The shape for closing section is cylinder.
5. the control system of electro-hydraulic linkage as claimed in claim 2, which is characterized in that described sleeve pipe and the shell of shift fork case are matched
Closing section is cylinder, and fastener is bolted on the outside of the cooperation section, and the fastener pushes against the shell of shift fork case.
6. the control system of electro-hydraulic linkage as described in claim 1, which is characterized in that described in the electrohydraulic control unit
Hydraulic lock, throttle valve, check valve and overflow valve are integrated on a hydraulic valve block.
7. a kind of adjustment type actuator, which is characterized in that the control system including any electro-hydraulic linkage of claim 1~6
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911150.6A CN109027395A (en) | 2018-08-10 | 2018-08-10 | The control system and adjustment type actuator of electro-hydraulic linkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911150.6A CN109027395A (en) | 2018-08-10 | 2018-08-10 | The control system and adjustment type actuator of electro-hydraulic linkage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109027395A true CN109027395A (en) | 2018-12-18 |
Family
ID=64633662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810911150.6A Withdrawn CN109027395A (en) | 2018-08-10 | 2018-08-10 | The control system and adjustment type actuator of electro-hydraulic linkage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109027395A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217690A (en) * | 2021-05-17 | 2021-08-06 | 黄山良业智能控制股份有限公司 | Electro-hydraulic valve actuating mechanism |
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| CN203036059U (en) * | 2012-11-15 | 2013-07-03 | 航天长征化学工程股份有限公司 | Pneumatic actuating mechanism driving valve |
| CN204692717U (en) * | 2015-06-12 | 2015-10-07 | 特福隆集团有限公司 | Valve electro-hydraulic actuator |
| CN105952947A (en) * | 2016-06-30 | 2016-09-21 | 张家港市艾罗执行器有限公司 | Gear pump control type electrohydraulic linkage actuator |
| CN205918968U (en) * | 2016-06-30 | 2017-02-01 | 张家港市艾罗执行器有限公司 | Two power gear pump control formula electro -hydraulic linkage execution control systems |
| CN208651772U (en) * | 2018-08-10 | 2019-03-26 | 江苏金陵自控技术有限公司 | The control system and adjustment type actuator of electro-hydraulic linkage |
-
2018
- 2018-08-10 CN CN201810911150.6A patent/CN109027395A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014420A (en) * | 2006-07-07 | 2008-01-24 | Nissan Motor Co Ltd | Spool valve |
| CN101105243A (en) * | 2007-07-03 | 2008-01-16 | 江苏中奥控制系统科技有限公司 | Valve hydraulic driver |
| CN203036059U (en) * | 2012-11-15 | 2013-07-03 | 航天长征化学工程股份有限公司 | Pneumatic actuating mechanism driving valve |
| CN204692717U (en) * | 2015-06-12 | 2015-10-07 | 特福隆集团有限公司 | Valve electro-hydraulic actuator |
| CN105952947A (en) * | 2016-06-30 | 2016-09-21 | 张家港市艾罗执行器有限公司 | Gear pump control type electrohydraulic linkage actuator |
| CN205918968U (en) * | 2016-06-30 | 2017-02-01 | 张家港市艾罗执行器有限公司 | Two power gear pump control formula electro -hydraulic linkage execution control systems |
| CN208651772U (en) * | 2018-08-10 | 2019-03-26 | 江苏金陵自控技术有限公司 | The control system and adjustment type actuator of electro-hydraulic linkage |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No. 101 Lianfeng Road, Dingyan Street, Changzhou City, Jiangsu Province, 213119 Applicant after: Jiangsu Jinling Intelligent Control Technology Co.,Ltd. Address before: 213119 Hengshan Bridge Town, Wujin Economic Development Zone, Changzhou City, Jiangsu Province Applicant before: JIANGSU JINLING AUTOMATIC CONTROL TECHNOLOGY CO.,LTD. |
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| CB02 | Change of applicant information | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181218 |
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| WW01 | Invention patent application withdrawn after publication |