CN209414283U - A kind of servo electrohydraulic driver - Google Patents
A kind of servo electrohydraulic driver Download PDFInfo
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- CN209414283U CN209414283U CN201822144256.6U CN201822144256U CN209414283U CN 209414283 U CN209414283 U CN 209414283U CN 201822144256 U CN201822144256 U CN 201822144256U CN 209414283 U CN209414283 U CN 209414283U
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Abstract
The utility model discloses a kind of servo electrohydraulic drivers, including servo motor, gear pump, liquid storage device, servo-cylinder, integrated control valve group, shaft coupling, overflow valve A, overflow valve B, oil pipe A, oil pipe B；Be bolted with integrated control valve group in the middle part of the servo-cylinder, the integrated control valve group by oil pipe A, B respectively with the forward and backward chamber of servo-cylinder；The side of the integrated control valve group is bolted with servo motor, and the other side is equipped with gear pump；Disengaging type transmission is equipped with shaft coupling in the integrated control valve group, top is equipped with overflow valve A, B, check valve and pressure testing point；The servo motor uses brushless ac speed regulating motor, the built-in configuration of liquid storage device, and the gear pump uses plug-in type crescent gear pump；The utility model uses modularization and integrated structural member, realizes control motor by servo electrohydraulic driving cylinder, drives quantitative gear pump；Have the advantages that precision is high, compact-sized, manufacture processing cost is low, product qualification rate is high.
Description
Technical field
The utility model relates to a kind of servo drive system technical equipment field, in particular to a kind of servo electrohydraulic driving
Device.
Background technique
With industrial continuous development, servo-system is using more and more extensive, and SERVO CONTROL is as its output block
An indispensable crucial ring；During the motion, one of them important motion process is exactly for the executing agency of engineering machinery
Thrust, servo-system, Xiang Tigao power, electro-hydraulic driving development are direction, have gradually developed electro-hydraulic propeller and integrated
Control system.
Traditional electrichydraulic control technique generallys use the method for craft or semi-automatic operation to realize, but this control is
System has that manufacture processing cost is high, control precision is low, product qualification rate is low, the big, unstable product quality of product quality error etc.
Disadvantage；High-end servo-control system is high to the reliability requirement of product simultaneously, and high, positioning is especially required in terms of position control
Precision controlling will inaccurately will lead to the control deviation of product, and the consistency of undefined position when complete machine is run more influences fortune
Line frequency.
In the prior art the shortcomings that: craft and its semi-automatic operation are usually cumbersome, often easily cause misoperation and position inclined
Problem, positioning accuracy is poor, and continuous production process effect is poor, and working efficiency is low；Pressure control in position is uneven, causes fraction defective high,
It reprocesses and causes material and artificial significant wastage.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of servo electrohydraulic driver, in the prior art
Deficiency, use modularization and integrated structural member, pass through servo motor, the electro-hydraulic transmitting power of servo-cylinder servo electricity
Liquid driving cylinder realizes control motor, drives quantitative gear pump, is in the nature the Hydrauservo System of pump control；Widely applicable, precision
Height, control system are combined using Digital Control and host computer communication modes by Digitizing And Control Unit with entity come complete
At entire control, have many advantages, such as that compact-sized, integrated level is high, control precision is high.
In order to achieve the above objectives, the technical solution of the utility model is as follows: a kind of servo electrohydraulic driver, including servo electricity
Machine, gear pump, liquid storage device, servo-cylinder, safety valve, check valve, integrated control valve group, shaft coupling, overflow valve A, overflow valve B,
Oil pipe A, oil pipe B, drive end bearing bracket, intermediate piston bar, piston rod, cylinder tube, rear end cap, dustband, Glais ring, sealing ring, gear
Circle, axis guidance tape, hole guidance tape, holding screw, soket head cap screw, gas vent, oil cylinder entrance, pressure testing point, it is special
Sign is:
The servo-cylinder is the manufacture of drum-shaped mental section, is spirally connected in the middle part of the servo-cylinder and is fixedly installed rectangle
Integrated control valve group, the integrated control valve group are connected with front chamber, the rear chamber on servo-cylinder respectively by oil pipe A, oil pipe B
It is logical；The side of the integrated control valve group, which is spirally connected, is fixedly installed servo motor, and the other side is fixedly installed gear pump；It is described to watch
It takes disengaging type transmission in the integrated control valve group between motor and gear pump and is provided with shaft coupling；At the top of the integrated control valve group
It is provided with overflow valve A, overflow valve B, check valve and multiple pressure testing points；
The servo motor uses brushless ac speed regulating motor, and the brushless ac speed regulating motor is controlled by single-chip microcontroller；
The two-way commutation zone movable tooth wheel pump of servo motor；The servo motor speed regulation drives the flow mode of adjustment gear pump, will turn
Velocity modulation section organisation conversion success rate adjuster；
The liquid storage device is built-in to be configured inside the integrated control valve group, for driving the low pressure accumulation of energy of liquid.
The gear pump uses plug-in type, crescent gear pump.
The integrated control valve group integral type is integrated with liquid storage device, safety valve, check valve, servo controller, motion control
Device, speed control, pressure controller, positioner and volume compensator；The pressure controller includes pressure sensor,
The positioner includes position sensor.
The liquid storage device can also external, being spirally connected is configured at the outside of the integrated control valve group.
The servo controller and servo-cylinder are the PID regulator of closed-loop control system, and the servo controller is by upper
Position machine control, given servo motor rotating signal-export feedback-reading tachometer value-using speed control and read pressure
Force value, location feedback value-and actual comparison, and a closed-loop control system is formed by PID regulator.
The servo-cylinder includes drive end bearing bracket, intermediate piston bar, piston rod, cylinder tube, rear end cap, dustband, Ge Lai
Circle, sealing ring, retaining ring, axis guidance tape, hole guidance tape, holding screw, soket head cap screw, gas vent, oil cylinder entrance；It is described
Intermediate piston bar is placed in inside rear end cap and cylinder tube and is sealedly and fixedly connected by holding screw；The cylinder tube
Forward end seal is provided with drive end bearing bracket, and sliding sealing is provided with piston between the drive end bearing bracket and cylinder tube, intermediate piston bar
Bar；It is provided with gas vent on the cylinder tube, oil cylinder entrance is provided on the rear end cap.
Sealing ring and retaining ring are provided between the cylinder tube and drive end bearing bracket, rear end cap；The cylinder tube and piston
Glais ring and hole guidance tape are provided between bar；Dustband, Glais ring are disposed between the drive end bearing bracket and piston rod
With axis guidance tape；Glais ring and axis guidance tape are provided between the intermediate piston bar and piston rod.
The axially directed band, hole guidance tape add bronze powder using polytetrafluoroethylene (PTFE)；The sealing ring uses oil resistant rubber
Glue；The retaining ring uses polytetrafluoroethylene (PTFE).
The technical indicator of the servo electrohydraulic driver are as follows: environment temperature: -5 ° Celsius to 65 °, installation site is arbitrarily square
To work strength range 1.5kN -1000kN, stroke length 50mm -1.5m, position precision 0.01mm, and pressure precision is
0.5%FS, fidelity 0.01mm, protection class IP54/IP64, control mode are that position and/or pressure control, maintenance
Period is 6 years or 40,000 hours runs.
The technical characterstic of the utility model also resides in:
1, big overload demand in short-term: for the big overload demand in short-term in machine driving, conventional hydraulic leans on accumulator
Meet, but since accumulator needs periodic maintenance, it is complicated mechanically avoid as far as possible using.Its energy is real by variable pump
The raising of existing system effectiveness and conventional hydraulic difference are little, for big overload demand also as conventional hydraulic.
This product servo electrohydraulic driving cylinder and torque are to carry out the output power of regulating system by the output power of control motor, utilize electricity
The Short-time Overload of machine is using meeting the peaks demand in load behavior.Brushless electricity can be used in servo electrohydraulic driving cylinder
Machine, brushless motor can bear big overload, therefore on radar, the working service of electrohydraulic servo system without mechanical brush
It can increase with reliability compared with conventional hydraulic.
2, servo stiffness: usual machinery requires the big rigidity of transmission, in traditional electrohydraulic servo system, due to high-pressure spray
Body it is incompressible, resist load disturbance improve and conventional hydraulic difference it is little, for big overload demand also and tradition
Hydraulic system is the same；This servo electrohydraulic driving cylinder is the output power for carrying out regulating system by the output power of control motor, benefit
With the Short-time Overload of motor using the peaks demand in load behavior is met, the structure of servo-cylinder integrally has very high
Rigidity；Due to consideration that system effectiveness, is not recommended to use self-locking transmission mechanism, for load disturbance, if without current control
Link is adjusted by motor self-ability, and the ability of system disturbance rejection depends on the performance of motor；For example it is stopped at a certain position
When setting, although error signal is zero, load need to be overcome, electric current is larger.
3, it small-signal performance: in electrohydraulic servo system, although the transmission mechanism of electromechanical servo system is rigid, is not necessarily to
Consider the compressibility of fluid in hydraulic system, servo electrohydraulic driving cylinder be slowed down using fluid gear pump discharge, but by
It is driven in telex system by deviation, as system deviation reduces, the input power of fax servo-system reduces therewith, causes small
Under signal condition, non-linear effects are serious.Conventional electro-hydraulic servo-system is valve control system, and the reduction of system deviation is to servo valve
Output influences little.Therefore, the performance of telex system is not so good as conventional electro-hydraulic servo-system under small signal.
4, power: it is horizontal with regard to current domestic development, for the servo drive of middle low power (being less than 300W), servo electricity
Liquid driving cylinder is optimal selection；And the driving device of 500W or more, servo electrohydraulic driving cylinder and conventional hydraulic then have more
Competitiveness.
The working principle of the utility model are as follows: electro-hydraulic servo driving cylinder working principle.Using servo ac adjustable speed motor band
Dynamic crescent gear pump, is commutated by servo motor, has been avoided the inert zone and large inertia of ordinary motor commutation or valve commutation, has been mentioned
The high response of system；With the mode that electric machine speed regulation changes flow compared with speed regulative mode, structural complexity is reduced, is turned
Velocity modulation section organisation conversion success rate adjuster had not only reduced architecture quality but also had reduced the power loss of mechanical adjusting mechanism itself.
In the course of work, according to the difference of load characteristic, the flow and revolving speed of pump are adjusted, electro-hydraulic servo driving cylinder makes in the course of work
Transmission system had not only met the needs of dynamic property, but also can improve system effectiveness, reduced fever；
Servo-driver is given motor rotating signal-and is turned using speed control output feedback-reading by PC control
Fast value-simultaneously reads pressure value, and location feedback value etc.-and actual value are by PID regulator one closed-loop control system of formation.
Through the above technical solutions, the beneficial effect of technical solutions of the utility model is: using modularization and integrated
Structural member is realized control motor, is driven by servo motor, the servo electrohydraulic driving cylinder of the electro-hydraulic transmitting power of servo-cylinder
Quantitative gear pump；High suitable for any environment, precision, control system is passed through using Digital Control and host computer communication modes
Digitizing And Control Unit combines to complete entirely to control with entity, with compact-sized, integrated level is high, manufacture processing cost
Advantage low, control precision is high, product qualification rate is high.It can be widely applied to: water conservancy, metallurgy, ship, aerospace, bending machine
The special special-purpose machinery of tool, shearing machine, forming machine, punching machine replaces servo motor spindle driver, material processing test board
(laboratory) field of food industry.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, embodiment or the prior art will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of servo electrohydraulic driver front view schematic diagram disclosed in the utility model embodiment；
Fig. 2 is a kind of servo electrohydraulic driver top view illustration disclosed in the utility model embodiment；
Fig. 3 is a kind of servo electrohydraulic driver left view schematic diagram disclosed in the utility model embodiment；
Fig. 4 is a kind of servo electrohydraulic driver electro-hydraulic device front view schematic diagram disclosed in the utility model embodiment；
Fig. 5 be in a kind of servo electrohydraulic driver Fig. 4 disclosed in the utility model embodiment E to partial schematic diagram；
Fig. 6 is a kind of servo electrohydraulic driver servo-cylinder cross-sectional view schematic diagram disclosed in the utility model embodiment；
Fig. 7 is a kind of servo electrohydraulic driver servo-cylinder top view illustration disclosed in the utility model embodiment；
Fig. 8 is a kind of servo electrohydraulic driver principles diagram intention disclosed in the utility model embodiment；
Fig. 9 is a kind of servo electrohydraulic Drive Module control figure schematic diagram disclosed in the utility model embodiment.
Number and corresponding component title represented by letter in figure:
1. 2. gear pump of servo motor, 3. liquid storage device, 4 servo-cylinder
5. 6. check valve of safety valve, 7. integrated control valve group, 8. shaft coupling
9. 10. overflow valve B of overflow valve A, 11. oil pipe A, 12. oil pipe B
13. 14. intermediate piston bar of drive end bearing bracket, 15. piston rod, 16. cylinder tube
17. 18. dustband of rear end cap, 19. Glais ring, 20. sealing ring
21. 22. axis of retaining ring, 23. hole of guidance tape guidance tape, 24. holding screw
25. 26. gas vent of soket head cap screw, 27. oil cylinder entrance, 28. pressure testing point
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
According to Fig. 1 to Fig. 9, the utility model provides a kind of servo electrohydraulic driver, including servo motor 1, gear pump
2, liquid storage device 3, servo-cylinder 4, safety valve 5, check valve 6, integrated control valve group 7, shaft coupling 8, overflow valve A9, overflow valve B10,
Oil pipe A11, oil pipe B12, drive end bearing bracket 13, intermediate piston bar 14, piston rod 15, cylinder tube 16, rear end cap 17, dustband 18,
Glais ring 19, sealing ring 20, retaining ring 21, axis guidance tape 22, hole guidance tape 23, holding screw 24, soket head cap screw 25, row
Stomata 26, oil cylinder entrance 27, pressure testing point 28.
The servo-cylinder 4 is the manufacture of drum-shaped mental section, is spirally connected in the middle part of the servo-cylinder 4 and is fixedly installed rectangle
Integrated control valve group 7, the integrated control valve group 7 by oil pipe A11, oil pipe B12 respectively with the ante-chamber on servo-cylinder 4
Room, rear chamber's connection；The side of the integrated control valve group 7, which is spirally connected, is fixedly installed servo motor 1, and the other side is fixedly installed
Gear pump 2；Disengaging type transmission is provided with shaft coupling 8 in integrated control valve group 7 between the servo motor 1 and gear pump 2；Institute
It states and is provided with overflow valve A9, overflow valve B10, check valve 6 and multiple pressure testing points 28 at the top of integrated control valve group 7；
The servo motor 1 uses brushless ac speed regulating motor, and the brushless ac speed regulating motor is controlled by single-chip microcontroller；
The two-way commutation zone movable tooth wheel pump 2 of the servo motor 1；The speed regulation of servo motor 1 drives the flow mode of adjustment gear pump 2,
Rotating speed adjusting mechanism is converted to power governor；
The liquid storage device 3 is built-in to be configured inside the integrated control valve group 7, for driving the low pressure accumulation of energy of liquid.
The gear pump 2 uses plug-in type, crescent gear pump.
7 integral type of integrated control valve group is integrated with liquid storage device 3, safety valve 5, check valve 6, servo controller, movement
Controller, speed control, pressure controller, positioner and volume compensator；The pressure controller includes that pressure passes
Sensor, the positioner include position sensor.
The liquid storage device 3 can also external, being spirally connected is configured at the outside of the integrated control valve group 7.
The servo controller and servo-cylinder 4 are the PID regulator of closed-loop control system, and the servo controller is by upper
Position machine control, given 1 rotating signal of servo motor-export feedback-reading tachometer value-using speed control and read
Pressure value, location feedback value-and actual comparison, and a closed-loop control system is formed by PID regulator.
The servo-cylinder 4 include drive end bearing bracket 13, intermediate piston bar 14, piston rod 15, cylinder tube 16, rear end cap 17,
Dustband 18, Glais ring 19, sealing ring 20, retaining ring 21, axis guidance tape 22, hole guidance tape 23, holding screw 24, interior hexagonal
Screw 25, gas vent 26, oil cylinder entrance 27；The intermediate piston bar 14 is placed in inside rear end cap 17 and cylinder tube 16 and leads to
Holding screw 24 is crossed to be sealedly and fixedly connected；The forward end seal of the cylinder tube 16 is provided with drive end bearing bracket 13, the drive end bearing bracket 13
Sliding sealing is provided with piston rod 15 between cylinder tube 16, intermediate piston bar 14；It is provided on the cylinder tube 16
Gas vent 26 is provided with oil cylinder entrance 27 on the rear end cap 17.
Sealing ring 20 and retaining ring 21 are provided between the cylinder tube 16 and drive end bearing bracket 13, rear end cap 17；The oil cylinder
Glais ring 19 and hole guidance tape 23 are provided between cylinder barrel 16 and piston rod 15；Between the drive end bearing bracket 13 and piston rod 15 according to
It is secondary to be provided with dustband 18, Glais ring 19 and axis guidance tape 22；It is provided between the intermediate piston bar 14 and piston rod 15
Glais ring 19 and axis guidance tape 22.
The axially directed band 22, hole guidance tape 23 add bronze powder using polytetrafluoroethylene (PTFE)；The sealing ring 20 uses
Oil resistant rubber；The retaining ring 21 uses polytetrafluoroethylene (PTFE).
The technical indicator of the servo electrohydraulic driver are as follows: environment temperature: -5 ° Celsius to 65 °, installation site is arbitrarily square
To work strength range 1.5kN -1000kN, stroke length 50mm -1.5m, position precision 0.01mm, and pressure precision is
0.5%FS, fidelity 0.01mm, protection class IP54/IP64, control mode are that position and/or pressure control, maintenance
Period is 6 years or 40,000 hours runs.
The specific implementation operating procedure of the utility model is: the cylinder body is circular metal profile framework, under the chassis
The fixed valve block in portion and servo motor, the cylinder interior are equipped with that piston, built-in sensors etc., (loop circuit is poor for servo-drive cylinder
Dynamic pump) it is a hydraulic linear axis, position control and the control of pressure/force amount can be done suitable for high power and high system, pressure passes
Sensor is incorporated in all applications of dynamic in system, includes a servo motor, crescent gear pump and an integrated valve group (choosing
)；Also position feedback sensor is incorporated.Servo-drive cylinder is mainly characterized in that the high hydraulic cylinder composition tied in succession, watches
Taking driving cylinder is a simple closed system.Energy efficiency and operation almost without abrasion.It is protected in conjunction with hydraulic excellent overload
Shield essence, long service life.The control in the area ratio for the servopump symmetrical hydraulic cylinder integrated, speed and direction completely dispenses with
Any direction or proportioning valve.Because being closed loop system, servo-drive cylinder does not need fuel tank or external impetus unit, necessary
Volume compensator is also integrated in together.
By above-mentioned specific embodiment, the beneficial effects of the utility model are: integrated servo electrohydraulic driving cylinder is in machine
On tool, keep hydraulic system integrated, such pipeline is less, and servo-system efficiency improves, and by the Variable Control to pump, realizes hydraulic
The energy changes with load and the purpose of variation, and independent unit, is appreciated that complicated dynamic process at the smallest restriction loss；It is high
Effect energy conservation and independent operation, woth no need to additional pipeline, the hot property of optimization, compensation rate is small, the loss of the smallest throttle, nothing
Need complicated valve gate technology；Servo oil pump active control reduces energy cost, reduces 50% or more expenditure, reduces carbon dioxide
Discharge；Operational efficiency is enhanced about more than once, and is widely used in water conservancy, ship, metallurgy, space flight and intelligence manufacture industry.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (7)
1. a kind of servo electrohydraulic driver, which is characterized in that including servo motor, gear pump, liquid storage device, servo-cylinder, safety
Valve, check valve, integrated control valve group, shaft coupling, overflow valve A, overflow valve B, oil pipe A, oil pipe B, drive end bearing bracket, intermediate piston bar,
Piston rod, cylinder tube, rear end cap, dustband, Glais ring, sealing ring, retaining ring, axis guidance tape, hole guidance tape, clamp screw
Nail, soket head cap screw, gas vent, oil cylinder entrance, pressure testing point；The servo-cylinder is the manufacture of drum-shaped mental section, institute
It states to be spirally connected in the middle part of servo-cylinder and is fixedly installed the integrated control valve group of rectangle, the integrated control valve group passes through oil pipe A, oil pipe
B is connected to front chamber, the rear chamber on servo-cylinder respectively；The side of the integrated control valve group, which is spirally connected, is fixedly installed servo
Motor, the other side are fixedly installed gear pump；Disengaging type passes in integrated control valve group between the servo motor and gear pump
It is dynamic to be provided with shaft coupling；Overflow valve A, overflow valve B, check valve and multiple pressure tests are provided at the top of the integrated control valve group
Point；
The servo motor uses brushless ac speed regulating motor, and the brushless ac speed regulating motor is controlled by single-chip microcontroller；It is described
The two-way commutation zone movable tooth wheel pump of servo motor；The servo motor speed regulation drives the flow mode of adjustment gear pump, by revolving speed tune
Save organisation conversion success rate adjuster；
The liquid storage device is built-in to be configured inside the integrated control valve group, for driving the low pressure accumulation of energy of liquid；
The gear pump uses plug-in type, crescent gear pump.
2. a kind of servo electrohydraulic driver according to claim 1, which is characterized in that the integrated control valve group integral type
It is integrated with liquid storage device, safety valve, check valve, servo controller, motion controller, speed control, pressure controller, position control
Device and volume compensator processed；The pressure controller includes pressure sensor, and the positioner includes position sensor.
3. a kind of servo electrohydraulic driver according to claim 2, which is characterized in that the servo controller and servo oil
Cylinder is the PID regulator of closed-loop control system, and the servo controller gives servo motor rotating signal-by PC control
Feedback-reading tachometer value-is exported using speed control and reads pressure value, location feedback value-and actual comparison,
And a closed-loop control system is formed by PID regulator.
4. a kind of servo electrohydraulic driver according to claim 1, which is characterized in that the servo-cylinder includes front end
Lid, intermediate piston bar, piston rod, cylinder tube, rear end cap, dustband, Glais ring, sealing ring, retaining ring, axis guidance tape, hole
With guidance tape, holding screw, soket head cap screw, gas vent, oil cylinder entrance；The intermediate piston bar is placed in rear end cap and oil cylinder
Cylinder is internal and is sealedly and fixedly connected by holding screw；The forward end seal of the cylinder tube is provided with drive end bearing bracket, the front end
Sliding sealing is provided with piston rod between lid and cylinder tube, intermediate piston bar；It is provided with gas vent on the cylinder tube,
Oil cylinder entrance is provided on the rear end cap.
5. a kind of servo electrohydraulic driver according to claim 4, which is characterized in that the cylinder tube and drive end bearing bracket,
Sealing ring and retaining ring are provided between rear end cap；Glais ring and hole guiding are provided between the cylinder tube and piston rod
Band；Dustband, Glais ring and axis guidance tape are disposed between the drive end bearing bracket and piston rod；The intermediate piston bar with
Glais ring and axis guidance tape are provided between piston rod.
6. a kind of servo electrohydraulic driver according to claim 4, which is characterized in that the axially directed band, hole are with leading
Bronze powder is added using polytetrafluoroethylene (PTFE) to band；The sealing ring uses oil resistant rubber；The retaining ring uses polytetrafluoroethylene (PTFE).
7. a kind of servo electrohydraulic driver according to claim 1, which is characterized in that the skill of the servo electrohydraulic driver
Art index are as follows: environment temperature: -5 ° Celsius to 65 °, installation site any direction, work strength range 1.5kN -1000kN, row
Cheng Changdu 50mm -1.5m, position precision 0.01mm, pressure precision 0.5%FS, fidelity 0.01mm, protection class
For IP54/IP64, control mode is that position and/or pressure control, and maintenance period is 6 years or 40,000 hours runs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822144256.6U CN209414283U (en) | 2018-12-20 | 2018-12-20 | A kind of servo electrohydraulic driver |
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| CN201822144256.6U CN209414283U (en) | 2018-12-20 | 2018-12-20 | A kind of servo electrohydraulic driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710373A (en) * | 2019-09-30 | 2020-01-21 | 黑龙江八一农垦大学 | Hydraulic rotary driving device for agricultural machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710373A (en) * | 2019-09-30 | 2020-01-21 | 黑龙江八一农垦大学 | Hydraulic rotary driving device for agricultural machine |
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