CN109826771A - A kind of high-precision electric hydraulic pump - Google Patents
A kind of high-precision electric hydraulic pump Download PDFInfo
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- CN109826771A CN109826771A CN201711183956.XA CN201711183956A CN109826771A CN 109826771 A CN109826771 A CN 109826771A CN 201711183956 A CN201711183956 A CN 201711183956A CN 109826771 A CN109826771 A CN 109826771A
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- hydraulic pump
- motor
- fuel tank
- pressure
- control gear
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- 239000002828 fuel tank Substances 0.000 claims abstract description 21
- 239000010720 hydraulic oil Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to hydraulic pump unit fields, and in particular to arrives a kind of high-precision electric hydraulic pump；Including fuel tank, motor is provided with above fuel tank, the bottom side of motor is connected with hydraulic pump head, and hydraulic pump head connect setting with fuel tank；Valve group is further fixed on fuel tank, hydraulic pump head is connect by high-pressure oil pipe with valve group；It is connected with pressure sensor on the upside of valve group, the electric control gear connecting with motor is further fixed on fuel tank, electric control gear is connected with digital display input device, and digital display input device is located above pressure sensor；Wherein, for pressure sensor by cable connection electric control gear, electric control gear, which also passes through cable connection, control handle；It is the configuration of the present invention is simple, compact, it realizes pressure and adjusts setting digitlization；The precision and stability for improving output pressure thoroughly solve the problems, such as that pressure regulator valve is prone to wear.
Description
Technical field
The present invention relates to hydraulic pump unit fields, and in particular to arrives a kind of high-precision electric hydraulic pump.
Background technique
It is all realized using pressure regulator valve currently, most of electric hydraulic station adjusts setting pressure, is removed with hand
Dynamic adjusting pressuring handle is slowly adjusted；It is more advanced that hydraulic power unit pressure is set using proportional pressure control valve；No matter using above-mentioned which kind of
Pressure regulation method is essentially all to be realized by overflow valve principle.When due to hydraulic pump head work, endlessly conveying high-pressure
Hydraulic oil, overflow valve are arranged between the spool and valve seat while stablizing setting pressure by extra hydraulic oil from overflow valve
Out, dripping water wears through rock, and the time is long, and the spool and valve seat of overflow valve can be worn, and causes stress shakiness, or even the pressure of setting is not achieved
Power.
Summary of the invention
In view of the above problems, the present invention provides a kind of high-precision electric hydraulic pump, high-precision electric hydraulic pump of the present invention,
It realizes pressure and adjusts setting digitlization；The precision and stability for improving output pressure thoroughly solve pressure regulator valve and are easy
The problem of abrasion.
The technical scheme of the invention to solve the technical problem is:
A kind of high-precision electric hydraulic pump, wherein the high-precision electric hydraulic pump includes:
Fuel tank is provided with motor above the fuel tank, and the bottom side of the motor is connected with hydraulic pump head, described
Hydraulic pump head connect setting with the fuel tank；
Valve group is further fixed on the fuel tank, the hydraulic pump head is connect by high-pressure oil pipe with valve group；The valve
Group upside is connected with pressure sensor, and the electric control gear connecting with the motor is further fixed on the fuel tank,
The electric control gear is connected with digital display input device, and the number display input device is located on the pressure sensor
Side；
Wherein, the pressure sensor is also connected by cable by electric control gear described in cable connection, the electric control gear
It is connected to control handle.
Preferably, above-mentioned high-precision electric hydraulic pump, wherein the motor be servo motor, variable-frequency motor or
Stepper motor.
Preferably, above-mentioned high-precision electric hydraulic pump, wherein the valve group includes quick connector, electromagnetic switch
Valve and safety valve.
Preferably, above-mentioned high-precision electric hydraulic pump, wherein the electric control gear includes servo-driver, intelligence
PID controller and pressure transmitter；The intelligent PID controller is connect with the servo-driver, pressure transmitter respectively.
High-precision electric hydraulic pump structure of the present invention is simple, compact, realizes pressure and adjusts setting digitlization；It improves defeated
The precision and stability of pressure out thoroughly solves the problems, such as that pressure regulator valve is prone to wear.
Detailed description of the invention
With reference to appended attached drawing, more fully to describe the embodiment of the present invention.However, appended attached drawing be merely to illustrate and
It illustrates, and is not meant to limit the scope of the invention.
Fig. 1 is the structural schematic diagram of high-precision electric hydraulic pump of the present invention；
Fig. 2 is that the principle of high-precision electric hydraulic pump of the present invention is intended to.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
As shown in Figure 1, high-precision electric hydraulic pump specific structure of the present invention includes:
High-precision electric hydraulic pump stores container-fuel tank 6 of hydraulic oil, and motor 1 is provided with above fuel tank 6, electricity
The bottom side of motivation 1 is connected with hydraulic pump head 7, and hydraulic pump head 7 connect setting with fuel tank 6；Valve group 5 is further fixed on fuel tank 6,
Hydraulic pump head 7 is connect by high-pressure oil pipe with valve group 5；It is connected with pressure sensor 4 on the upside of valve group 5, is located on fuel tank 6 also
It is fixed with the electric control gear 2 connecting with motor 1, electric control gear 2 is connected with digital display input device 3, number display input
Device 3 is located at 4 top of pressure sensor；Wherein, for pressure sensor 4 by cable connection electric control gear 2, electric control gear 2 is also logical
Crossing cable connection has control handle 8.
In an embodiment of the present invention, motor is servo motor, variable-frequency motor or stepper motor etc..Motor is electronic
The power source of hydraulic pump provides driving force for electric hydraulic pump, and this programme uses the motor of the controllable speeds such as servo motor.
Preferably, electric control gear 2 is the control section of this programme, including servo-driver, intelligent PID controller and pressure
Transmitter；Intelligent PID controller is connect with servo-driver, pressure transmitter respectively；Wherein, intelligent PID controller is by watching
It takes driver to connect with motor 1, pressure transmitter is connect with pressure sensor, and control handle is connect with intelligent PID controller.
In an embodiment of the present invention, digital display input device 3 is the pressure display window of high-precision electric hydraulic pump,
And at the same time being the window of high-precision electric prexxure of the hydraulic pump input setting, it can be touch screen, be also possible to digital display meter etc..
Preferably, valve group 5 includes quick connector, solenoid directional control valve, safety valve etc.；Hydraulic pump head 7 is that hydraulic oil pressurizes
Component, be the important hydraulic unit of high-precision electric hydraulic pump, hydraulic pump head 7 can be single-stage hydraulic pump head, double-stage hydraulic
Pump head and three-level hydraulic pump head.
As shown in Fig. 2, the present invention is at work, hydraulic tool is connect by quick connector with high-precision electric hydraulic pump
Reliably；The power switch on high-precision electric hydraulic pump is opened, high-precision electric hydraulic pump is in standby preparation after self-test
State at this point, digital display input device 3 is in display state, and shows current pressure 0.0MPa；Setting key is pressed, number
Word display input device 3 is in pressure input setting state, and input needs the pressure value (such as 30MPa) set, confirmation input
Digital display input device 3 returns to display state 0.0MPa afterwards.
The ON start key on control handle 8 is pressed, the intelligent PID controller in electric control gear 2 is started to work, continuous logical
The actual pressure value that pressure sensor 4 is fed back is compared by over-voltage power transmitter with setup pressure value, and according to the inclined of them
Calculus curve adjusts the frequency for controlling motor 1 to difference according to set proportion, and the revolving speed of motor 1 becomes with control frequency
Change, the rotor of motor 1 directly drives the operating of hydraulic pump head 7, and the revolving speed of motor 1 is faster, and hydraulic pump head 7 adds to hydraulic system
The speed of pressure is faster, and the revolving speed of motor 1 is slow, and the speed that hydraulic pump head 7 is pressurizeed to hydraulic system is with regard to slow.The reality of hydraulic system
The revolving speed of border pressure value and motor 1 forms a closed-loop control；When just starting due to high-precision electric hydraulic pump, pressure is passed
The actual pressure value of 4 Real-time Feedback of sensor be 0.0MPa and setup pressure value (such as 30MPa) deviation it is very big, so, motor 1
It runs at high speed；The rotor of motor 1 drives hydraulic pump head 7 to be delivered to after the pressurization of the inner inspiration hydraulic oil of fuel tank 6 through high-pressure oil pipe
Valve group 5, hydraulic oil is transported to pressure sensor 4 by valve group 5, while being conveyed to hydraulic oil by quick connector and high-pressure hose
Hydraulic tool；The hydraulic oil pressure force value of valve group 5 is fed back to intelligent PID controller in real time by pressure sensor 4；By hydraulic pump head 7,
High-pressure oil pipe, valve group 5, high-pressure hose, hydraulic tool form a closed hydraulic system, with lasting pair of hydraulic pump head 7
Hydraulic system pressurization, the pressure of hydraulic system gradually rise, the actual pressure value and setting pressure of 4 Real-time Feedback of pressure sensor
Value (such as 30MPa) deviation is gradually reduced, and intelligent PID controller is gradually reduced control according to the proportional integral derivative curve set
The revolving speed of the frequency of motor 1, motor 1 slows down, pressurization of the hydraulic pump head 7 to hydraulic system with the reduction of control frequency
Speed is also with slack-off, and when hydraulic system reaches setup pressure value (such as 30MPa), the revolving speed of motor 1 is very slow, very
Most zero maintains setup pressure value (such as 30MPa)；Intelligent PID controller is always according to the proportional integral derivative curve set
It is electronic for the actual pressure value of 4 Real-time Feedback of pressure sensor and the deviation adjusting control of setup pressure value (such as 30MPa)
The frequency of machine 1, precision is very high, until pressing the OFF stop key on control handle 8.
In conclusion high-precision electric hydraulic pump structure of the present invention is simple, compact, realizes pressure and adjust setting number
Change；The precision and stability for improving output pressure thoroughly solve the problems, such as that pressure regulator valve is prone to wear.
It should be appreciated by those skilled in the art that those skilled in the art are combining the prior art and above-described embodiment can be with
Realize the change case, this will not be repeated here.Such change case does not affect the essence of the present invention, not superfluous herein
It states.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, devices and structures not described in detail herein should be understood as gives reality with the common mode in this field
It applies；Anyone skilled in the art, without departing from the scope of the technical proposal of the invention, all using the disclosure above
Methods and technical content many possible changes and modifications are made to technical solution of the present invention, or be revised as equivalent variations etc.
Embodiment is imitated, this is not affected the essence of the present invention.Therefore, anything that does not depart from the technical scheme of the invention, foundation
Technical spirit of the invention any simple modifications, equivalents, and modifications made to the above embodiment, still fall within the present invention
In the range of technical solution protection.
Claims (4)
1. a kind of high-precision electric hydraulic pump, which is characterized in that the high-precision electric hydraulic pump includes:
Fuel tank is provided with motor above the fuel tank, and the bottom side of the motor is connected with hydraulic pump head, described hydraulic
Pump head connect setting with the fuel tank；
Valve group is further fixed on the fuel tank, the hydraulic pump head is connect by high-pressure oil pipe with valve group；In the valve group
Side is connected with pressure sensor, and the electric control gear connecting with the motor is further fixed on the fuel tank, described
Electric control gear is connected with digital display input device, and the number display input device is located above the pressure sensor；
Wherein, the pressure sensor also has by cable connection by electric control gear described in cable connection, the electric control gear
Control handle.
2. high-precision electric hydraulic pump according to claim 1, which is characterized in that the motor is servo motor, becomes
Frequency motor or stepper motor.
3. high-precision electric hydraulic pump according to claim 1, which is characterized in that the valve group include quick connector,
Solenoid directional control valve and safety valve.
4. high-precision electric hydraulic pump according to claim 1, which is characterized in that the electric control gear includes servo-drive
Device, intelligent PID controller and pressure transmitter；The intelligent PID controller respectively with the servo-driver, pressure transmitter
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711183956.XA CN109826771A (en) | 2017-11-23 | 2017-11-23 | A kind of high-precision electric hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711183956.XA CN109826771A (en) | 2017-11-23 | 2017-11-23 | A kind of high-precision electric hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109826771A true CN109826771A (en) | 2019-05-31 |
Family
ID=66859028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711183956.XA Pending CN109826771A (en) | 2017-11-23 | 2017-11-23 | A kind of high-precision electric hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109826771A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294310A (en) * | 2021-05-28 | 2021-08-24 | 合肥工业大学 | Automatic water-replenishing pressure controller with bidirectional pressurization function |
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|---|---|---|---|---|
| JPH0988839A (en) * | 1995-09-25 | 1997-03-31 | Hitachi Constr Mach Co Ltd | Electro-hydraulic pump unit and small diameter pipe propulsion device |
| CN102734277A (en) * | 2012-07-04 | 2012-10-17 | 宁波巴斯顿机械科技有限公司 | High-accuracy and high-efficiency intelligent closed loop servo pump control system |
| CN202500735U (en) * | 2012-01-19 | 2012-10-24 | 河南易安能源科技有限公司 | Automatic emulsion fracturing construction equipment and emulsion pump set used therein |
| CN204828100U (en) * | 2015-07-10 | 2015-12-02 | 重庆市博平液压机械有限公司 | Closed -loop control servo drive hydraulic pressure station |
| CN105697351A (en) * | 2016-04-11 | 2016-06-22 | 广西玉柴机器股份有限公司 | Automatic water pressure detecting and adjusting system |
| CN205349538U (en) * | 2015-12-21 | 2016-06-29 | 广州三业科技有限公司 | Pressure water pump control system is decided to multizone digit |
| CN205977917U (en) * | 2016-08-26 | 2017-02-22 | 上海舜诺机械有限公司 | Electronic hydraulic pump of wireless remote control |
| CN206054424U (en) * | 2016-09-19 | 2017-03-29 | 上海舜诺机械有限公司 | A kind of hydraulic pump |
| CN206397708U (en) * | 2016-10-11 | 2017-08-11 | 北京中科宇杰节电设备有限公司 | A kind of constant voltage water pump energy-saving control system battery saving arrangement |
| CN107304758A (en) * | 2016-04-25 | 2017-10-31 | 上海汽车集团股份有限公司 | Hydraulic oil output device and its control method |
| CN207454196U (en) * | 2017-11-23 | 2018-06-05 | 上海舜诺机械有限公司 | A kind of high-precision electric hydraulic pump |
-
2017
- 2017-11-23 CN CN201711183956.XA patent/CN109826771A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988839A (en) * | 1995-09-25 | 1997-03-31 | Hitachi Constr Mach Co Ltd | Electro-hydraulic pump unit and small diameter pipe propulsion device |
| CN202500735U (en) * | 2012-01-19 | 2012-10-24 | 河南易安能源科技有限公司 | Automatic emulsion fracturing construction equipment and emulsion pump set used therein |
| CN102734277A (en) * | 2012-07-04 | 2012-10-17 | 宁波巴斯顿机械科技有限公司 | High-accuracy and high-efficiency intelligent closed loop servo pump control system |
| CN204828100U (en) * | 2015-07-10 | 2015-12-02 | 重庆市博平液压机械有限公司 | Closed -loop control servo drive hydraulic pressure station |
| CN205349538U (en) * | 2015-12-21 | 2016-06-29 | 广州三业科技有限公司 | Pressure water pump control system is decided to multizone digit |
| CN105697351A (en) * | 2016-04-11 | 2016-06-22 | 广西玉柴机器股份有限公司 | Automatic water pressure detecting and adjusting system |
| CN107304758A (en) * | 2016-04-25 | 2017-10-31 | 上海汽车集团股份有限公司 | Hydraulic oil output device and its control method |
| CN205977917U (en) * | 2016-08-26 | 2017-02-22 | 上海舜诺机械有限公司 | Electronic hydraulic pump of wireless remote control |
| CN206054424U (en) * | 2016-09-19 | 2017-03-29 | 上海舜诺机械有限公司 | A kind of hydraulic pump |
| CN206397708U (en) * | 2016-10-11 | 2017-08-11 | 北京中科宇杰节电设备有限公司 | A kind of constant voltage water pump energy-saving control system battery saving arrangement |
| CN207454196U (en) * | 2017-11-23 | 2018-06-05 | 上海舜诺机械有限公司 | A kind of high-precision electric hydraulic pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294310A (en) * | 2021-05-28 | 2021-08-24 | 合肥工业大学 | Automatic water-replenishing pressure controller with bidirectional pressurization function |
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