CN206054424U - A kind of hydraulic pump - Google Patents
A kind of hydraulic pump Download PDFInfo
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- CN206054424U CN206054424U CN201621063263.8U CN201621063263U CN206054424U CN 206054424 U CN206054424 U CN 206054424U CN 201621063263 U CN201621063263 U CN 201621063263U CN 206054424 U CN206054424 U CN 206054424U
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- hydraulic pump
- valve
- motor
- chip microcomputer
- solenoid directional
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Abstract
This utility model is related to machining tools art, more particularly to a kind of hydraulic pump.The hydraulic pump of this utility model design includes quick connector, motor, hydraulic pump head, hydraulic oil, solenoid directional control valve, valve group, control device, these devices link together, current portable electric hydraulic pump simple electrical control Electric automatic control is brought up to into, the safety of portable electric hydraulic pump has been improve and is automatically controlled performance.Improve the work efficiency of portable electric hydraulic pump.
Description
Technical field
This utility model is related to machining tools art, more particularly to a kind of hydraulic pump.
Background technology
Existing portable electric hydraulic pump is all, using simple electrical control, directly to be controlled with push contact
220v forceful electric power or button control 220v forceful electric power by auxiliary reclay；The break-make of electromagnetic valve is controlled directly with push contact
Electricity.There is potential safety hazard in such portable electric hydraulic pump, do not have more complicated automatic control function.
Therefore, need a kind of new hydraulic pump badly.
Utility model content
In view of the above problems, this utility model provides a kind of hydraulic pump.
A kind of hydraulic pump, wherein, including：
Single-chip microcomputer；
Heater, cooler, motor, hydraulic pump head, septum valve and solenoid directional control valve, it is the heater, described
Cooler, the motor and the solenoid directional control valve are connected with the single-chip microcomputer；
Fuel tank, the fuel tank and the heater, the cooler, the hydraulic pump head, septum valve and the electricity
Magnetic reversal valve connects, and the motor is connected with the fuel tank by the hydraulic pump head, the septum valve respectively with
The connection of the hydraulic pump head, the fuel tank and the solenoid directional control valve；
Control unit, is adjusted by the heater, the cooler, the motor, the hydraulic pump head, the high pressure
Section valve and the solenoid directional control valve are connected with the fuel tank；
Instruction input module, is connected with the single-chip microcomputer and the solenoid directional control valve respectively；
Back pressure regulating valve, is connected with the solenoid directional control valve and the fuel tank respectively.
Above-mentioned hydraulic pump, wherein, described control unit includes hydraulic oil temperature detection module, hydraulic oil heating cooling mould
Block, motor control module, motor temperature monitoring module and solenoid valve control module, and the fuel tank passes through the hydraulic oil
Temperature detecting module is connected with the single-chip microcomputer, and the heater and the cooler heat refrigerating module by the hydraulic oil
It is connected with the single-chip microcomputer, the motor is by the motor control module and the motor temperature detection module and institute
Single-chip microcomputer connection is stated, the solenoid directional control valve is connected with the single-chip microcomputer by the solenoid directional control valve.
Above-mentioned hydraulic pump, wherein, the hydraulic pump also includes：
Remotely control handle, is connected with the instruction input module.
In sum, advanced electron controls technology is used for portable electric by a kind of hydraulic pump of this utility model design
Hydrodynamic press pump, button switch become light current trigger button, solve the potential safety hazard of button switch forceful electric power；Single-chip microcomputer is used for
Portable electric hydraulic pump, makes portable electric hydraulic pump increased the automatic control function of many complexity.
1st, portable electric hydraulic pump oil temperature is automatically controlled, i.e.,：Oil temperature is too low can be heated automatically, and high oil temperature can be with
Automatically cool down.Oil temperature is made to be basically stable at hydraulic oil optimum performance temperature.
2nd, when portable electric hydraulic pump is shut down, system pressure automatically unloading is zero, is easy to safely change hydraulic tool.
3rd, portable electric hydraulic pump increased the function of safety protection for preventing maloperation.As maloperation or imprudence are touched
To button switch, portable electric hydraulic pump will not export hydraulic oil, not operate portable electric hydraulic pump within a certain period of time
Can autostop.
4th, portable electric hydraulic pump is increased in addition to the function with existing portable electric hydraulic pump manual operation
By the function of the pressure automatic running for setting.Operator is needed frequently to change manually when solving portable electric hydraulic pump works
To a difficult problem, operate more efficient and convenient, maneuverability, improve work efficiency.Due to increased above-mentioned functions, make portable
Automatic electric hydraulic pump is more convenient to use, safer, more energy-conservation the advantages of.
Description of the drawings
With reference to appended accompanying drawing, more fully to describe embodiment of the present utility model.However, appended accompanying drawing is only used for
Bright and elaboration, does not constitute the restriction to this utility model scope.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is process chart of the present utility model.
Specific embodiment
This utility model is further described with specific embodiment below in conjunction with the accompanying drawings, but not as this practicality
New restriction.
As shown in Figure 1 and Figure 2, a kind of hydraulic pump, including：Single-chip microcomputer, heater, cooler, motor, hydraulic pump head, height
Pressure regulating valve and solenoid directional control valve, heater, cooler, motor and solenoid directional control valve are connected with single-chip microcomputer, fuel tank, the fuel tank
It is connected with heater, cooler, hydraulic pump head, septum valve and solenoid directional control valve, and motor is by hydraulic pump head and oil
Case connects, and septum valve be connected with hydraulic pump head, fuel tank and solenoid directional control valve respectively, and a control unit passes through heater, cold
But device, motor, hydraulic pump head, septum valve and solenoid directional control valve are connected with fuel tank, an instruction input module respectively with list
Piece machine and solenoid directional control valve connection, a back pressure regulating valve are connected with solenoid directional control valve and fuel tank respectively.
In this application, control unit includes hydraulic oil temperature detection module, hydraulic oil heating refrigerating module, Motor Control
Module, motor temperature monitoring module and solenoid valve control module, and fuel tank passes through hydraulic fluid temperature detection module and single-chip microcomputer
Connection, heater and cooler are heated refrigerating module by hydraulic oil and are connected with single-chip microcomputer, and motor passes through Motor Control mould
Block and motor temperature detection module are connected with single-chip microcomputer, and solenoid directional control valve is connected with single-chip microcomputer by solenoid directional control valve.The liquid
Press pump also includes remotely control handle, and the remotely control handle is connected with instruction input module.
Specific embodiment
Portable Automatic electric hydraulic pump of the present utility model includes motor 1, ECU 2, solenoid directional control valve 3, valve
Group 4, quick connector 5, fuel tank 6, hydraulic pump head 7, remotely control handle 8.
Hydraulic pump head 7 can be single-stage hydraulic pump head, double-stage hydraulic pump head or three-level hydraulic pump head, there is provided highest 70MPa
Pressure.
Solenoid directional control valve 3 by the way of electric magnet and reversal valve combine, so as to ensure that under the high pressure of 70MPa,
Oil circuit reliably commutates.When solenoid directional control valve 3 must be electric, solenoid directional control valve commutates, now hydraulic pump output A roads hydraulic oil highest
To 70MPa, B roads are communicated with fuel tank 6；When 3 dead electricity of solenoid directional control valve, solenoid directional control valve commutates in the presence of back-moving spring,
Now hydraulic pump output B roads low pressure oil is up to 12MPa, and A roads are communicated with fuel tank 6.
Remotely control handle 8 includes：Control Portable Automatic electric hydaulic pump startup/operation button, control it is automatically controlled automatically
Hydraulic pump stop button, automatic running button.
ECU 2 includes：Single-chip microcomputer, motor control module, solenoid valve control module, hydraulic oil heating cooling mould
Block, instruction input module, motor temperature monitoring modular, hydraulic fluid temperature monitoring modular, single-chip microcomputer respectively with Motor Control
Module, solenoid valve control module, hydraulic oil heating refrigerating module, instruction input module, motor temperature monitoring modular, hydraulic oil
Temperature monitoring module is connected.
The course of work of this example is as shown in Figure 2：
Hydraulic tool is passed through into quick connector 5 and Portable Automatic electric hydraulic pump connects.When operator presses far first
During the startup on process control handle/operation button, control signal is delivered to monolithic by the instruction input module in ECU 2
Machine, single-chip microcomputer send instruction to motor control module, and motor control module makes motor 1 operate by execution circuit, electricity
The output shaft of motivation 1 drives hydraulic pump head 7 to work, the hydraulic oil Jing high-pressure pressure regulating valves of the output of hydraulic pump head 7, solenoid directional control valve 3
To back pressure pressure regulator valve, back-pressure is adjusted to 10MPa by back pressure pressure regulator valve, and the hydraulic oil of Jing back pressures pressure regulator valve output is fast from B roads
Connection-peg is transported to hydraulic tool piston and retreats end；A roads quick connector is connected with fuel tank 6 by solenoid directional control valve 3.Now hydraulic pressure
Instrument piston is in fallback state.If no longer carried out to remotely control handle in 20 seconds in any operation, i.e., 20 second without appointing
What control signal is delivered to single-chip microcomputer by the instruction input module in ECU 2, and single-chip microcomputer sends first and instructs to electronic
Machine control module, motor control module make motor 1 shut down by execution circuit；Then, single-chip microcomputer sends instruction again
To solenoid valve control module, solenoid valve control module makes solenoid directional control valve 3 commutate once by execution circuit, lay down electrodynamic pump and
Pressure in hydraulic tool.Realize Portable Automatic electric hydraulic pump autostop automatically unloading.
When the startup on remotely control handle/operation button is lifted, control signal is defeated by the instruction in ECU 2
Enter module and be delivered to single-chip microcomputer, single-chip microcomputer sends instruction to motor control module, and motor control module passes through execution circuit
Motor 1 is made to keep the output shaft of operating, motor 1 to drive hydraulic pump head 7 to work, the hydraulic oil Jing of the output of hydraulic pump head 7 is high
Back-pressure is adjusted to 10MPa, Jing back pressure pressure regulator valves by pressure pressure regulator valve, solenoid directional control valve 3 to back pressure pressure regulator valve, back pressure pressure regulator valve
The hydraulic oil of output is transported to hydraulic tool piston from B roads quick connector and retreats end；A roads quick connector passes through solenoid directional control valve 3
Connect with fuel tank 6.Now hydraulic tool piston is in fallback state.If no longer carried out to remotely control handle in 20 seconds any
Operation, i.e., do not have any control signal to be delivered to single-chip microcomputer, single-chip microcomputer by the instruction input module in ECU 2 in 20 seconds
Instruction is sent first to motor control module, and motor control module makes motor 1 shut down by execution circuit；So
Afterwards, single-chip microcomputer sends instruction again to solenoid valve control module, and solenoid valve control module changes solenoid directional control valve 3 by execution circuit
To once, laying down electrodynamic pump and the pressure in hydraulic tool.Realize Portable Automatic electric hydraulic pump autostop and unload automatically
Pressure.
When operator presses the startup/operation button on remotely control handle again, control signal passes through ECU 2
In instruction input module be delivered to single-chip microcomputer, single-chip microcomputer sends instruction first to motor control module, Motor Control mould
Block makes motor 1 keep operating by execution circuit, and then single-chip microcomputer sends instruction again to solenoid valve control module, electromagnetic valve control
Molding block makes solenoid directional control valve 3 obtain electric commutation by execution circuit；The output shaft of motor 1 drives hydraulic pump head 7 to work, hydraulic pressure
To high-pressure pressure regulating valve, operating pressure highest is adjusted to 70MPa, Jing high pressure pressure regulation to the hydraulic oil of the output of pump head 7 by high-pressure pressure regulating valve
The hydraulic oil Jing solenoid directional control valves 3 of valve output are transported to hydraulic tool piston-advance end from A roads quick connector；B roads quick connector
Connected with fuel tank 6 by solenoid directional control valve 3.Now hydraulic tool piston is in forward travel state.
When the startup on remotely control handle/operation button is lifted again, control signal is by the finger in ECU 2
Input module is made to be delivered to single-chip microcomputer, single-chip microcomputer sends instruction first to motor control module, and motor control module passes through
Execution circuit makes motor 1 keep operating, and then single-chip microcomputer sends instruction again to solenoid valve control module, solenoid valve control module
3 dead electricity of solenoid directional control valve is made to commutate by execution circuit；The output shaft of motor 1 drives hydraulic pump head 7 to work, hydraulic pump head 7
Back-pressure is adjusted to by the hydraulic oil Jing high-pressure pressure regulating valves of output, solenoid directional control valve 3 to back pressure pressure regulator valve, back pressure pressure regulator valve
The hydraulic oil of 10MPa, Jing back pressure pressure regulator valve output is transported to hydraulic tool piston from B roads quick connector and retreats end；The fast grafting in A roads
Head is connected with fuel tank 6 by solenoid directional control valve 3.Now hydraulic tool piston is in fallback state.If no longer to remote in 20 seconds
Process control handle carries out not having any control signal in any operation, i.e., 20 second by the instruction input module in ECU 2
Single-chip microcomputer is delivered to, single-chip microcomputer sends instruction first to motor control module, and motor control module is made by execution circuit
Motor 1 shuts down；Then, single-chip microcomputer sends instruction again to solenoid valve control module, and solenoid valve control module is by performing
Circuit makes solenoid directional control valve 3 commutate once, lays down electrodynamic pump and the pressure in hydraulic tool.Realize Portable Automatic electric hydaulic
Pump autostop automatically unloading.
When Portable Automatic electric hydaulic pump motor is already at operating condition, click (lifted after pressing again) remote
During automatic running button on process control handle, control signal is delivered to monolithic by the instruction input module in ECU 2
Machine, single-chip microcomputer send instruction first to motor control module, and motor control module keeps motor 1 by execution circuit
Operating, then, single-chip microcomputer is ready to receive the control letter sent by A roads, B roads pressure transducer that instruction input module sends
Number；The output shaft of motor 1 drives hydraulic pump head 7 to work, and the hydraulic oil Jing high-pressure pressure regulating valves of the output of hydraulic pump head 7, electromagnetism are changed
To valve 3 to back pressure pressure regulator valve, back-pressure is adjusted to 10MPa by back pressure pressure regulator valve, and the hydraulic oil of Jing back pressures pressure regulator valve output is from B
Road quick connector is transported to hydraulic tool piston and retreats end, while being transported to B roads pressure transducer；A roads quick connector is by electricity
Magnetic reversal valve 3 is connected with fuel tank 6.Now hydraulic tool piston is in fallback state, when hydraulic tool piston backs to restriction position
When putting, back-pressure starts quick rising, and when back-pressure is increased to 8MPa, B roads pressure transducer sends control signal and leads to
Cross instruction input module and be sent to single-chip microcomputer, single-chip microcomputer sends instruction immediately to solenoid valve control module, solenoid valve control module
Solenoid directional control valve 3 is made to obtain electric commutation by execution circuit；After commutation, the hydraulic oil Jing solenoid directional control valves 3 of the output of hydraulic pump head 7 are from A
Road quick connector is transported to hydraulic tool piston-advance end, while being transported to A roads pressure transducer；B roads quick connector is by electricity
Magnetic reversal valve 3 is connected with fuel tank 6.Now hydraulic tool piston is in forward travel state.When hydraulic tool piston-advance is to restriction position
When putting, A roads pressure starts quick rising, and when the pressure rise of A roads is to the operating pressure for setting, A roads pressure transducer sends
Control signal is sent to single-chip microcomputer by instruction input module, and single-chip microcomputer sends instruction immediately to solenoid valve control module, electromagnetism
Valve control module makes 3 dead electricity of solenoid directional control valve commutate by execution circuit；The hydraulic oil Jing electromagnetism of the output of hydraulic pump head 7 after commutation
Reversal valve 3 is transported to hydraulic tool piston from B roads quick connector and retreats end, while being transported to B roads pressure transducer；A is inserted on road soon
Joint is connected with fuel tank 6 by solenoid directional control valve 3.Now hydraulic tool piston is in fallback state.After hydraulic tool piston
When falling back on defined position, back-pressure starts quick rising, and when back-pressure is increased to 8MPa, B roads pressure transducer is again
Send control signal and single-chip microcomputer be sent to by instruction input module, single-chip microcomputer sends instruction immediately to solenoid valve control module,
Solenoid valve control module by execution circuit make solenoid directional control valve 3 again electric commutation ... so circulation realizing hydraulic tool
Automatically work.
When the automatic running button on remotely control handle is clicked (lifted after pressing again) again, control signal is by electricity
Instruction input module in control unit 2 is delivered to single-chip microcomputer, and single-chip microcomputer sends instruction first to motor control module, motor
Control module makes motor 1 keep operating by execution circuit, and then, single-chip microcomputer sends a command to solenoid valve control module, electricity
Magnet valve control module makes 3 dead electricity of solenoid directional control valve commutate by execution circuit；After commutation, the hydraulic oil Jing of the output of hydraulic pump head 7 is electric
Magnetic reversal valve 3 is transported to hydraulic tool piston from B roads quick connector and retreats end, while being transported to B roads pressure transducer；A roads are fast
Connection-peg is connected with fuel tank 6 by solenoid directional control valve 3.Now hydraulic tool piston is in fallback state.Single-chip microcomputer no longer receives A
The control signal that road, B roads pressure transducer send.Automatic running pattern has been exited.
When operator clicks (lifted after pressing again) stop button on remotely control handle, control signal is by electricity
Instruction input module in control unit 2 is delivered to single-chip microcomputer, and single-chip microcomputer sends instruction first to motor control module, motor
Control module makes motor 1 shut down by execution circuit, and then single-chip microcomputer sends instruction again to solenoid valve control module, electricity
Magnet valve control module makes solenoid directional control valve 3 obtain electric commutation once by execution circuit, lays down electrodynamic pump and the pressure in hydraulic tool
Power.
Motor temperature monitoring modular in above whole process in ECU 2 is carried out to the temperature of motor in real time
Monitoring, when the temperature of motor exceedes predetermined value, motor temperature monitoring modular sends a signal to single-chip microcomputer, and single-chip microcomputer passes through
Motor control module stops hydraulic pump head 7 and works, and makes solenoid directional control valve dead electricity by solenoid valve control module；It is simultaneously red
LED failure warning lamp light.
After Portable Automatic electric hydraulic pump is powered, the hydraulic fluid temperature monitoring modular in ECU 2 is to fuel tank
The temperature of interior hydraulic oil carries out real-time monitoring, and when the temperature of hydraulic oil is less than 25 DEG C, hydraulic fluid temperature monitoring modular sends letter
Number give single-chip microcomputer, single-chip microcomputer send instructions to hydraulic oil heating refrigerating module, hydraulic oil heating refrigerating module pass through execution circuit
Start heater, when preheating hydraulic oil is to 30 DEG C, hydraulic fluid temperature monitoring modular sends a signal to single-chip microcomputer, and single-chip microcomputer sends and refers to
Making and refrigerating module being heated to hydraulic oil, hydraulic oil heats refrigerating module to be stopped heating by execution circuit.In automatically controlled automatic hydraulic
During the entire process of pump work, the hydraulic fluid temperature monitoring modular in ECU 2 carries out reality to the temperature of hydraulic oil in fuel tank
When monitor, when the temperature of hydraulic oil is higher than 35 DEG C, hydraulic fluid temperature monitoring modular sends a signal to single-chip microcomputer, and single-chip microcomputer sends
Instructing and refrigerating module being heated to hydraulic oil, hydraulic oil heats refrigerating module and starts cooler by execution circuit, cools down hydraulic oil
During to 32 DEG C, hydraulic fluid temperature monitoring modular sends a signal to single-chip microcomputer, and single-chip microcomputer sends instructions to hydraulic oil heating cooling mould
Block, hydraulic oil heats refrigerating module to be stopped cooling down by execution circuit.The temperature of hydraulic oil is made to be maintained at 30 DEG C～60 DEG C most preferably
Operating temperature.
To protect the safe operation of Portable Automatic electric hydraulic pump, Portable Automatic electric hydraulic pump of the present utility model
Deadweight safety valve is also provided with hydraulic pump head 7, when system pressure is higher than safe pressure, deadweight safety valve is opened, and is laid down
Partial pressure, at this moment reduced pressure；When system pressure is less than safe pressure, deadweight safety valve cuts out, it is ensured that system is transported safely
OK.
In sum, advanced electron controls technology is used for portable electric hydraulic pump, button switch by this utility model
Become light current trigger button, solve the potential safety hazard of button switch forceful electric power；Single-chip microcomputer is used for into portable electric hydraulic pump,
Portable electric hydraulic pump is made to increased the automatic control function of many complexity.The automatic control of portable electric hydraulic pump oil temperature
System, i.e.,：Oil temperature is too low can be heated automatically, and high oil temperature can be cooled down automatically.Oil temperature is made to be basically stable at hydraulic oil optimality
Can temperature.When portable electric hydraulic pump is shut down, system pressure automatically unloading is zero, is easy to safely change hydraulic tool.It is portable
Formula electric hydraulic pump increased the function of safety protection for preventing maloperation.As maloperation or imprudence encounter button switch, just
Portable electric hydraulic pump will not export hydraulic oil, not operate portable electric hydraulic pump meeting autostop within a certain period of time.Just
Portable electric hydraulic pump is increased by the pressure for setting in addition to the function with existing portable electric hydraulic pump manual operation
The function of power automatic running.A difficult problem for the frequent manual reverse of direction of operator is needed when solving portable electric hydraulic pump works, is grasped
Make more efficient and convenient, maneuverability, improve work efficiency.Due to increased above-mentioned functions, Portable Automatic electronic liquid is made
Press pump is more convenient to use, safer, more energy-conservation the advantages of.
By explanation and accompanying drawing, the exemplary embodiments of the ad hoc structure of specific embodiment are given, it is new based on this practicality
Type spirit, can also make other conversions.Although above-mentioned utility model proposes existing preferred embodiment, however, these contents
It is not intended as limitation.
For a person skilled in the art, after reading described above, various changes and modifications undoubtedly will be evident that.
Therefore, appending claims should regard the whole variations and modifications for covering true intention of the present utility model and scope as.
In Claims scope, any and all scope of equal value and content, are all considered as still belonging to intention of the present utility model and model
In enclosing.
Claims (3)
1. a kind of hydraulic pump, it is characterised in that include：
Single-chip microcomputer；
Heater, cooler, motor, hydraulic pump head, septum valve and solenoid directional control valve, the heater, the cooling
Device, the motor and the solenoid directional control valve are connected with the single-chip microcomputer；
Fuel tank, the fuel tank are changed with the heater, the cooler, the hydraulic pump head, septum valve and the electromagnetism
Connect to valve, and the motor be connected with the fuel tank by the hydraulic pump head, the septum valve respectively with it is described
The connection of hydraulic pump head, the fuel tank and the solenoid directional control valve；
Control unit, by the heater, the cooler, the motor, the hydraulic pump head, the septum valve
It is connected with the fuel tank with the solenoid directional control valve；
Instruction input module, is connected with the single-chip microcomputer and the solenoid directional control valve respectively；
Back pressure regulating valve, is connected with the solenoid directional control valve and the fuel tank respectively.
2. hydraulic pump according to claim 1, it is characterised in that described control unit include hydraulic oil temperature detection module,
Hydraulic oil heating refrigerating module, motor control module, motor temperature monitoring module and solenoid valve control module, and the oil
Case is connected with the single-chip microcomputer by the hydraulic fluid temperature detection module, and the heater and the cooler pass through the liquid
Force feed heating refrigerating module is connected with the single-chip microcomputer, and the motor is by the motor control module and the motor
Temperature detecting module is connected with the single-chip microcomputer, and the solenoid directional control valve is connected with the single-chip microcomputer by the solenoid directional control valve
Connect.
3. hydraulic pump according to claim 1, it is characterised in that the hydraulic pump also includes：
Remotely control handle, is connected with the instruction input module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621063263.8U CN206054424U (en) | 2016-09-19 | 2016-09-19 | A kind of hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621063263.8U CN206054424U (en) | 2016-09-19 | 2016-09-19 | A kind of hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206054424U true CN206054424U (en) | 2017-03-29 |
Family
ID=58370634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621063263.8U Active CN206054424U (en) | 2016-09-19 | 2016-09-19 | A kind of hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206054424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826771A (en) * | 2017-11-23 | 2019-05-31 | 上海舜诺机械有限公司 | A kind of high-precision electric hydraulic pump |
-
2016
- 2016-09-19 CN CN201621063263.8U patent/CN206054424U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826771A (en) * | 2017-11-23 | 2019-05-31 | 上海舜诺机械有限公司 | A kind of high-precision electric hydraulic pump |
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