CN108105195A - A kind of mechanical electronic hydraulic digital servo valve - Google Patents
A kind of mechanical electronic hydraulic digital servo valve Download PDFInfo
- Publication number
- CN108105195A CN108105195A CN201810118722.5A CN201810118722A CN108105195A CN 108105195 A CN108105195 A CN 108105195A CN 201810118722 A CN201810118722 A CN 201810118722A CN 108105195 A CN108105195 A CN 108105195A
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- Prior art keywords
- mechanical
- motor
- transmission shaft
- hydraulic
- spool
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/16—Special measures for feedback, e.g. by a follow-up device
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
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- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Servomotors (AREA)
Abstract
The invention discloses a kind of mechanical electronic hydraulic digital servo valve, including：Servo guiding valve, driving mechanism and feedback mechanism, driving mechanism and feedback mechanism are detachably connectable to the both ends of servo guiding valve in the axial direction respectively；Servo guiding valve includes valve body and coaxial arrangement in the in vivo spool of valve, the one end of spool in the axial direction sets transmission shaft, transmission shaft is paid spool by nut and is connected, nut is paid comprising the threaded rod and nut set being threadedly coupled, threaded rod is connected to spool away from one end that nut covers, the one end of nut set away from threaded rod is connected to transmission shaft, and the other end of spool in the axial direction is provided with shaft coupling.Hydraulic servo is simple in structure and using flexible for electromechanics according to the invention, suitable for being used under various operating modes, the advantages of further combined with pure electropneumatic servo valve and purely mechanic servo valve, realizes high-precision, high reliability, low cost, easy-operating technique effect.
Description
Technical field
The present invention relates to field of hydraulic control, more particularly to a kind of mechanical electronic hydraulic digital servo valve.
Background technology
In conventional hydraulic servo field, there are pure electrical servo valve such as nozzle-flapper servo valve, jet pipe servo valve, moving-coil
Servo valve, proportional servo valve etc., all these servo valves all use the electromagnetism force control mode of pure electric current, have precision it is high,
The advantages that reliability is high, easy to use, just must be with installing but if wanting speed and the position of Precise Control of Oil cylinder inside oil cylinder
Position sensor be combined, be combined and could realize using the computer of complicated control algolithm and high-speed computation, this side
Method is not only expensive, and debugs trouble, difficult in maintenance, high failure rate.And traditional mechanical servo valve is all without exception
It is using manual control, purely mechanic feedback, the shortcomings that this mechanical servo valve is transmission chain length, mechanical clearance is big, precision is low, frequency
Slow, poor reliability is rung, only some applications is obtained in hydraulic pressure early stage, with the appearance of electric feedback servo valve, has been eliminated substantially
It is out.
In conclusion servo valve how to be made to have both the advantages such as simple in structure, easy to operate, precision is high, price is low as liquid
The technical issues of pressing control field urgently to be resolved hurrily.
The content of the invention
In order to solve the technical issues of existing, the present invention proposes a kind of simple in structure, using flexible, has both purely mechanic watch
Take the electromechanical hydraulic servo of both valve and pure electropneumatic servo valve advantage.
The electromechanical hydraulic servo of the present invention is achieved through the following technical solutions：
A kind of mechanical electronic hydraulic digital servo valve according to the invention, including：Servo guiding valve, driving mechanism and feedback mechanism,
Wherein,
Driving mechanism and feedback mechanism are detachably connectable to the both ends of servo guiding valve in the axial direction respectively；
Servo guiding valve includes valve body and coaxial arrangement in the in vivo spool of valve, and the one end of spool in the axial direction sets transmission
Axis, transmission shaft are paid spool by nut and are connected, wherein, nut is paid comprising the threaded rod and nut set being threadedly coupled, threaded rod
One end away from nut set is connected to spool, and the one end of nut set away from threaded rod is connected to transmission shaft, and spool is in the axial direction
The other end be provided with shaft coupling.
Further, servo valve is four-way servo valve, and valve body includes high pressure hydraulic fluid port P, oil return opening O, the first hydraulic fluid port A and second
Hydraulic fluid port B.
Further, driving mechanism is the electric drive mechanism comprising motor, and the output shaft of motor is connected with shaft coupling, and is driven
Dynamic shaft coupling axial-rotation；Feedback mechanism is mechanical feedback mechanism, and mechanical feedback mechanism connects hydraulic actuating mechanism and transmission shaft,
And the movement of hydraulic actuating mechanism is transferred to transmission shaft and forms feedback.
Further, driving mechanism is mechanical driving mechanism, and mechanical driving mechanism connects transmission shaft, and drives transmission shafts
To rotation；Feedback mechanism is the electric feedback mechanism comprising motor, and the output shaft of motor is connected with shaft coupling, and motor receives table
Show the electric signal of executing agency's movement and formed according to electric signal and fed back.
Further, driving mechanism is mechanical driving mechanism, and mechanical driving mechanism connects transmission shaft, and drives transmission shafts
To rotation；Feedback mechanism is mechanical feedback mechanism, mechanical feedback mechanism connection hydraulic actuating mechanism and transmission shaft, and hydraulic pressure is held
The movement of row mechanism is transferred to transmission shaft and forms feedback.
Further, mechanical driving mechanism is handle.
Further, driving mechanism be the electric drive mechanism comprising the first motor, the output shaft and shaft coupling of the first motor
Connection, and drive shaft coupling axial-rotation；Feedback mechanism be the electric feedback mechanism comprising the second motor, the output shaft and connection of motor
Joint connects, and motor receives the electric signal for representing executing agency's movement and formed according to electric signal and fed back.
Further, electric feedback mechanism includes the position sensor with its communications, and position sensor detection hydraulic pressure performs
The movement of mechanism.
Further, hydraulic actuating mechanism is the piston rod of oil cylinder, the piston rod of hydraulic motor or by oil cylinder or hydraulic pressure
One kind in motion or rotation axis that motor promotes.
Due to using the technology described above, the present invention has the following advantages that compared with prior art：
1. both the advantages of the advantages of electromechanical hydraulic servo will be automatically controlled are with machine feedback combine, realize automatically controlled
Flexibility and the rapidity and reliability of machine feedback, the valve with flexible combination, can meet the requirement of different operating modes.Both may be used
By be combined as it is purely mechanic in a manner of servo, can also be combined as it is pure automatically controlled, flexibly and easily, so as to greatly extend it application neck
Domain.More valuable is that whole Digital Controls can be achieved, and convenient for being combined with high-end internet, realizes remote control.
2. electromechanical hydraulic servo is simple to manufacture, to valve body material without particular/special requirement, the manufacture for solving high-end servo valve is difficult
Topic.
3. mechanical electronic hydraulic valve is easy to manufacture, requirement is manufactured without special technique, breaches raising obstacles for high-end servo valve.
4. debugging is simple：Requirement is controlled without complicated software.
5. working service is convenient, contamination resistance is strong, is particularly suitable for severe use environment.
Description of the drawings
Fig. 1 is the servo guiding valve schematic diagram of mechanical electronic hydraulic digital servo valve according to the invention；
Fig. 2 is the schematic diagram of mechanical electronic hydraulic digital servo valve first embodiment according to the invention；
Fig. 3 is the schematic diagram of mechanical electronic hydraulic digital servo valve second embodiment according to the invention；
Fig. 4 is the schematic diagram of mechanical electronic hydraulic digital servo valve 3rd embodiment according to the invention；
Fig. 5 is the schematic diagram of mechanical electronic hydraulic digital servo valve fourth embodiment according to the invention.
In figure：
1 servo guiding valve, 11 valve bodies, 12 spools, 121 transmission shafts, 122 nuts are paid, 123 shaft couplings, 21,22,23,24 drivings
Mechanism, 31,32,33,34 feedback mechanisms, 4 oil cylinders, 41 ante-chambers, 42 back cavities, 43 pistons, 44 piston rods, P high pressure hydraulic fluid ports, O oil returns
Mouthful, the first hydraulic fluid ports of A, the second hydraulic fluid ports of B.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiment, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
Electromechanics hydraulic servo according to the invention is totally comprising servo guiding valve 1 as shown in Figure 1, driving mechanism and feedback machine
Structure.Servo guiding valve 1 includes valve body 11 and coaxial arrangement in the spool 12 in valve body 11, can be four-way servo guiding valve, valve body
11 comprising high pressure hydraulic fluid port P, oil return opening O, the first hydraulic fluid port A and the second hydraulic fluid port B or commonly used in the art other kinds of watch
Take guiding valve.Driving mechanism is detachably connectable to the one end of spool 12 in the axial direction, for spool 12 to be driven to surround central shaft
Rotation.Electromechanical hydraulic servo can coordinate oil motor or oil cylinder to use, and corresponding executing agency can be the output of oil motor
On the various motions that the piston rod or oil cylinder or hydraulic motor of axis and oil cylinder promote or in rotation axis, formed to liquid
The speed control of pressure actuator and position control.
In the present invention, the one end of spool 12 in the axial direction is provided with transmission shaft 121, which passes through nut
122 are paid to be connected with spool, wherein, nut pays 122 and includes the threaded rod and thread bush being threadedly coupled, and threaded rod is covered away from nut
One end is fixedly connected with spool 12, and correspondingly, the one end of nut set away from threaded rod is fixedly connected with transmission shaft 121.Spool 12
122, which are paid, by nut realizes rotary motion and the conversion of linear motion.The other end of spool 12 in the axial direction is provided with shaft coupling
Section 123.Transmission shaft 121 and shaft coupling 123 can be selectively connected various forms of driving mechanisms and feedback according to specific operating mode
Mechanism.
Embodiment one
With reference to Fig. 1 and 2, in the present embodiment, electromechanical hydraulic servo includes four-way servo guiding valve 1,21 and of electric drive mechanism
Mechanical feedback mechanism 31.First hydraulic fluid port A and the second hydraulic fluid port B are respectively connected to the ante-chamber 41 of oil cylinder 4 and back cavity 42.Electric drive mechanism
21 include motor, and the output shaft of the motor is connected with shaft coupling 123；Mechanical feedback mechanism 31 is connected on the piston rod 43 of oil cylinder 4.
Specifically, when motor, which receives digital pulse signal, to be rotated, output shaft by 123 rotational valve core 12 of shaft coupling,
Spool 12 pays 122 by nut in rotary course and generates axial displacement towards left side in Fig. 2, and the control side on spool 12 will
First hydraulic fluid port A and the second hydraulic fluid port B are opened simultaneously, and high pressure oil enters the ante-chamber 41 of oil cylinder 4 by the first hydraulic fluid port A, in back cavity 42
Oil flows back to fuel tank oil cylinder 4 by hydraulic fluid port B.The piston 43 of oil cylinder 4 generates movement under the action of oil pressure, is connected to piston rod 43
The movement is transferred to transmission shaft 121 by mechanical feedback mechanism 31, and transmission shaft 121 drives the nut set of nut pair 122 to rotate, will
Spool 12 axial pushed home, motor to the right constantly rotate, and hydraulic fluid port A and B are constantly automatically adjusted so that 4 speed of oil cylinder with
Track motor speed, position tracking motor corner, i.e. motor rotates forward oil cylinder 4 and advances, and motor reversal oil cylinder 4 retreats, and motor stops oil cylinder
4 stop, and realize speed control and position control.
Embodiment two
With reference to Fig. 1 and 3, in the present embodiment, electromechanical hydraulic servo includes four-way servo guiding valve 1, mechanical driving mechanism 22
With electric feedback mechanism 32.First hydraulic fluid port A and the second hydraulic fluid port B are respectively connected to the back cavity 42 of oil cylinder 4 and ante-chamber 41.Mechanical Driven machine
Structure 22 is connected to transmission shaft 121；Electric feedback mechanism 32 includes motor and absolute displacement transducer (not shown), the output of the motor
Axis is connected with shaft coupling 123.
Specifically, when mechanical driving mechanism 22 drives the rotation of transmission shaft 121, transmission shaft 121 drives the nut of nut pair 122
Set rotates, and further spool 121 is promoted to generate axial displacement, and the control side on spool 12 is by the first hydraulic fluid port A and the second hydraulic fluid port B
It opens simultaneously, high pressure oil enters the ante-chamber 41 of oil cylinder 4 by the first hydraulic fluid port A, and the second hydraulic fluid port B connects 42 oil return of back cavity of oil cylinder 4.
The piston 43 of oil cylinder 4 generates movement under the action of oil pressure, and absolute displacement transducer detects the movement of piston rod 43, and to electricity
Machine sends the electric signal for representing that piston rod 43 moves, and motor receives the electric signal and by the way that the rotation of shaft coupling 123 is driven to realize
Adjusting to servo valve.
Embodiment three
With reference to Fig. 1 and 4, in the present embodiment, electromechanical hydraulic servo includes four-way servo guiding valve 1, mechanical driving mechanism 23
With mechanical feedback mechanism 33.First hydraulic fluid port A and the second hydraulic fluid port B are respectively connected to the ante-chamber 41 of oil cylinder 4 and back cavity 42.Mechanical Driven
Mechanism 23 is to be connected to the handle of shaft coupling 123；Mechanical feedback mechanism 33 connects the piston rod 43 of oil cylinder 4.
Specifically, operator's control handle drives spool 12 to rotate by shaft coupling, and spool 12 passes through in rotary course
Nut pays 122 and generates axial displacements, and the control side on spool 12 opens simultaneously the first hydraulic fluid port A and the second hydraulic fluid port B, and high pressure oil leads to
The ante-chamber 41 that the first hydraulic fluid port A enters oil cylinder 4 is crossed, the second hydraulic fluid port B connects 42 oil return of back cavity of oil cylinder 4.The piston 43 of oil cylinder 4 is in oil
Movement is generated under the action of pressure, which is transferred to transmission shaft 121 by the mechanical feedback mechanism 33 for being connected to piston rod 43, is driven
Axis 121 drives the nut set of nut pair 122 to rotate, and further by 12 pushed home of spool.
Example IV
With reference to Fig. 1 and 5, in the present embodiment, electromechanical hydraulic servo includes four-way servo guiding valve 1,24 and of electric drive mechanism
Electric feedback mechanism 34.First hydraulic fluid port A and the second hydraulic fluid port B are respectively connected to the ante-chamber 41 of oil cylinder 4 and back cavity 42.Electric drive mechanism 24
Comprising the first motor, the output shaft of first motor is connected with shaft coupling 123；Electricity feedback 34 includes the second motor and relative position
Encoder (not shown), the output shaft of the motor are connected with transmission shaft 121.
Specifically, when the first motor, which receives digital pulse signal, to be rotated, output shaft passes through 123 rotational valve core of shaft coupling
12, spool 12 pays 122 by nut in rotary course and generates axial displacements, the control side on spool 12 by the first hydraulic fluid port A and
Second hydraulic fluid port B is opened simultaneously, and high pressure oil enters the ante-chamber 41 of oil cylinder 4 by the first hydraulic fluid port A, after the second hydraulic fluid port B connects oil cylinder 4
42 oil return of chamber.The piston 43 of oil cylinder 4 generates movement under the action of oil pressure, and relative position encoder detects the fortune of piston rod 43
It is dynamic, and the electric signal for representing that piston rod 43 moves is sent to motor, the second motor receives the electric signal and passes through driving shaft coupling
123 rotate to realize the adjusting to servo valve.
In the above embodiment of the present invention, mechanical feedback mechanism can be the components such as rack, chain, steel wire.According to this
The electromechanical hydraulic servo of invention is simple in structure and using flexible, suitable for being used under various operating modes, further combined with pure electricity
The advantages of gas servo valve is with purely mechanic servo valve, realizes high-precision, high reliability, low cost, easy-operating technique effect.
Above example only expresses embodiments of the present invention, therefore description is more specific and detailed, but can not be
And it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art, not
On the premise of departing from present inventive concept, various modifications and improvements can be made, these belong to protection scope of the present invention.Cause
This, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of mechanical electronic hydraulic digital servo valve, which is characterized in that including：Servo guiding valve, driving mechanism and feedback mechanism,
In,
The driving mechanism and the feedback mechanism are detachably connectable to the both ends of the servo guiding valve in the axial direction respectively；
The servo guiding valve includes valve body and coaxial arrangement in the in vivo spool of the valve, the one end of the spool in the axial direction
Transmission shaft is set, the transmission shaft is paid the spool by nut and is connected, wherein, the nut is paid comprising the spiral shell being threadedly coupled
Rasp bar and nut set, the threaded rod are connected to the spool away from one end that the nut covers, and the nut set is away from described
One end of threaded rod is connected to transmission shaft, and the other end of the spool in the axial direction is provided with shaft coupling.
2. mechanical electronic hydraulic digital servo valve according to claim 1, which is characterized in that the servo valve is four-way servo valve,
The valve body includes high pressure hydraulic fluid port P, oil return opening O, the first hydraulic fluid port A and the second hydraulic fluid port B.
3. mechanical electronic hydraulic digital servo valve according to claim 2, which is characterized in that the driving mechanism is to include motor
Electric drive mechanism, the output shaft of the motor are connected with the shaft coupling, and drive the shaft coupling axial-rotation；The feedback
Mechanism is mechanical feedback mechanism, mechanical feedback mechanism connection hydraulic actuating mechanism and the transmission shaft, and by the hydraulic pressure
The movement of executing agency is transferred to the transmission shaft and forms feedback.
4. mechanical electronic hydraulic digital servo valve according to claim 2, which is characterized in that the driving mechanism is Mechanical Driven machine
Structure, the mechanical driving mechanism connects the transmission shaft, and drives the transmission shaft axial-rotation；The feedback mechanism be comprising
The electric feedback mechanism of motor, the output shaft of the motor are connected with the shaft coupling, and the motor receives and represents execution machine
The electric signal of structure movement simultaneously forms feedback according to the electric signal.
5. mechanical electronic hydraulic digital servo valve according to claim 2, which is characterized in that the driving mechanism is Mechanical Driven machine
Structure, the mechanical driving mechanism connects the transmission shaft, and drives the transmission shaft axial-rotation；The feedback mechanism is machinery
Feedback mechanism, mechanical feedback mechanism connection hydraulic actuating mechanism and the transmission shaft, and by the hydraulic actuating mechanism
Movement is transferred to the transmission shaft and forms feedback.
6. mechanical electronic hydraulic digital servo valve according to claim 4 or 5, which is characterized in that the mechanical driving mechanism is hand
Handle.
7. mechanical electronic hydraulic digital servo valve according to claim 2, which is characterized in that the driving mechanism is comprising the first electricity
The electric drive mechanism of machine, the output shaft of first motor are connected with the shaft coupling, and drive the shaft coupling axial-rotation；
The feedback mechanism is the electric feedback mechanism comprising the second motor, and the output shaft of the motor is connected with the shaft coupling, and
The motor, which receives the electric signal for representing executing agency's movement and formed according to the electric signal, to be fed back.
8. the mechanical electronic hydraulic digital servo valve according to claim 4 or 7, which is characterized in that it is described electricity feedback mechanism include with
The position sensor of its communications, the position sensor detect the movement of the hydraulic actuating mechanism.
9. the mechanical electronic hydraulic digital servo valve according to any one of claim 3-7, which is characterized in that the hydraulic pressure performs machine
Structure is the piston rod of oil cylinder, the piston rod of hydraulic motor or the motion promoted by oil cylinder or hydraulic motor or rotation axis
In one kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118722.5A CN108105195A (en) | 2018-02-06 | 2018-02-06 | A kind of mechanical electronic hydraulic digital servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118722.5A CN108105195A (en) | 2018-02-06 | 2018-02-06 | A kind of mechanical electronic hydraulic digital servo valve |
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| Publication Number | Publication Date |
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| CN108105195A true CN108105195A (en) | 2018-06-01 |
Family
ID=62221914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810118722.5A Pending CN108105195A (en) | 2018-02-06 | 2018-02-06 | A kind of mechanical electronic hydraulic digital servo valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN108105195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681482A (en) * | 2019-02-11 | 2019-04-26 | 北京亿美博科技有限公司 | A kind of digital hydraulic variable pump and its adjusting method |
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| CN85108167A (en) * | 1985-11-08 | 1986-09-03 | 冶金工业部北京钢铁设计研究总院 | Digital pulse-valve system |
| CN2324308Y (en) * | 1996-11-15 | 1999-06-16 | 长江水利委员会长江科学院控制设备研究所 | Electric valve control cylinder type electrohydraulic servo device for speed regulator of hydroturbine |
| CN101008413A (en) * | 2007-01-12 | 2007-08-01 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN102889254A (en) * | 2011-07-22 | 2013-01-23 | 杨世祥 | Dual-drive servo valve and control method thereof |
| CN103148035A (en) * | 2013-03-13 | 2013-06-12 | 武汉海力威机电科技有限公司 | Directly-fed digital hydraulic valve |
| CN103216478A (en) * | 2012-01-20 | 2013-07-24 | 杨世祥 | Digital hydraulic motor |
| CN106812761A (en) * | 2017-02-10 | 2017-06-09 | 武汉科技大学 | Crank block type feedback digital hydraulic cylinder |
| CN208057553U (en) * | 2018-02-06 | 2018-11-06 | 北京亿美博科技有限公司 | A kind of mechanical electronic hydraulic digital servo valve |
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2018
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108167A (en) * | 1985-11-08 | 1986-09-03 | 冶金工业部北京钢铁设计研究总院 | Digital pulse-valve system |
| CN2324308Y (en) * | 1996-11-15 | 1999-06-16 | 长江水利委员会长江科学院控制设备研究所 | Electric valve control cylinder type electrohydraulic servo device for speed regulator of hydroturbine |
| CN101008413A (en) * | 2007-01-12 | 2007-08-01 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN102889254A (en) * | 2011-07-22 | 2013-01-23 | 杨世祥 | Dual-drive servo valve and control method thereof |
| CN103216478A (en) * | 2012-01-20 | 2013-07-24 | 杨世祥 | Digital hydraulic motor |
| CN103148035A (en) * | 2013-03-13 | 2013-06-12 | 武汉海力威机电科技有限公司 | Directly-fed digital hydraulic valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681482A (en) * | 2019-02-11 | 2019-04-26 | 北京亿美博科技有限公司 | A kind of digital hydraulic variable pump and its adjusting method |
| CN109681482B (en) * | 2019-02-11 | 2024-04-19 | 北京亿美博科技有限公司 | Digital hydraulic variable pump and adjusting method thereof |
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