CN202108817U - Electro-hydraulic actuator controlled by flow regulating valve - Google Patents
Electro-hydraulic actuator controlled by flow regulating valve Download PDFInfo
- Publication number
- CN202108817U CN202108817U CN2011202154928U CN201120215492U CN202108817U CN 202108817 U CN202108817 U CN 202108817U CN 2011202154928 U CN2011202154928 U CN 2011202154928U CN 201120215492 U CN201120215492 U CN 201120215492U CN 202108817 U CN202108817 U CN 202108817U
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- selector valve
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Abstract
An electro-hydraulic actuator controlled by a flow regulating valve comprises a motor and a one-way pump connected with the motor. An oil outlet of the one-way pump is connected with an overflow valve and a P port of a reversing valve, and a pressure monitoring unit is arranged on the oil outlet of the one-way pump. An A port of the reversing valve is connected to one end of a servo oil cylinder through a hydraulic control one-way valve, and a B port of the reversing valve is connected to the other end of the servo oil cylinder through a hydraulic control one-way valve. A control oil way of the hydraulic control one-way valve is connected to the B port of the reversing valve, and a control oil way of the hydraulic control one-way valve is connected to the A port of the reversing valve. A position sensor is arranged at the tail end of the servo oil cylinder and connected with a controller, and the controller is in output connection with the motor and the reversing valve. The electro-hydraulic actuator controlled by the flow regulating valve has the advantages of being high in control accuracy, small in volume, simple in structure, low in cost, good in maintainability and low in energy consumption.
Description
Technical field
The utility model relates to a kind of flow control valve control type electrohydraulic actuator, particularly relates to a kind of flow control valve control type electrohydraulic actuator that combines selector valve realization positioning control through dynamic adjustments pump discharge flow.
Background technique
Electrohydraulic control is a kind ofly to accept electrical signal and so that the actuator of press liquid as power source to be arranged, and has that stroke is big, thrust or characteristics such as moment is big, the response time is fast, sensitivity height.
Electrohydraulic control is divided into throttling type and direct-driving type two big classes basically at present.Traditional throttling type electrohydraulic system system dynamics frequency response is high; But system bulk is big, capacity loss is big, system's heating is big, energy consumption is high; Its main feature is to adopt valve prosecutor formula to realize the switching-over and the Flow-rate adjustment of oil hydraulic cylinder, and power adopts constant speed motor to drive one-way pump and gives the hydraulic system fuel feeding.Direct-driving type electrohydraulic system system responses for throttling type is low; But system bulk is little, energy conversion efficiency is high, good energy-conserving effect; Its main feature is to drive switching-over and the Flow-rate adjustment that two-way pump is realized hydraulic jack through actuating motor (or other adjustable-speed motors); Because most of employing is the differential cylinder of single rod in the industrial control, the sectional area at oil cylinder two ends is unequal, causes oil cylinder oil-feed and fuel-displaced amount not to wait; Thereby need in oil hydraulic circuit, increase the flow loop and be used to compensate this difference in flow; Otherwise system can't carry out proper functioning, and this kind mode is except needs carry out the flow loop compensation, and the critical function of the valve lock-bit that in practical application, often needs is just simple to rely on one-way valve to realize.
The model utility content
Its purpose of the utility model just is to provide a kind of flow control valve control type electrohydraulic actuator; Through the feedback signal of position transducer and the position signal of setting are compared; The control rotating speed of motor realizes the Flow-rate adjustment of pump discharge and the control that the control selector valve is realized the cylinder action direction, thereby realization is accurately controlled the position.Have control accuracy height, volume is little, simple in structure, cost is low, the property tieed up is good characteristics, and energy consumption is low.
The technological scheme that realizes above-mentioned purpose and take comprises motor, connects the one-way pump of motor; The one-way pump oil outlet connects relief valve, selector valve P mouth; Described one-way pump oil outlet is provided with the pressure monitoring unit, and described selector valve A mouth is through an end of Pilot operated check valve connection servo-cylinder, and selector valve B mouth connects the other end of servo-cylinder through Pilot operated check valve; The control oil channel of described Pilot operated check valve is connected to selector valve B mouth; The control oil channel of Pilot operated check valve is connected to selector valve A mouth, and described servo-cylinder end is provided with position transducer and connects controller, and described controller output connects motor and selector valve.
The technological scheme of the flow control valve control type electrohydraulic actuator of the utility model is concrete to be realized as follows: controller receives valve position feedback signal and control room's control signal of servo-cylinder; Both compare, computing; Output control signal control rotating speed of motor; Said controller links to each other with speed-adjustable motor through actuating cable; Said motor links to each other with one-way pump; Said one-way pump oil outlet and relief valve, pressure monitoring unit link to each other, said one-way pump oil outlet also is connected the selector valve filler opening, and the control oil channel that two oil outlets of said selector valve connect two Pilot operated check valves, said two one-way valves respectively is cross connected to two oil outlets of said selector valve respectively, and said two one-way valves are connected respectively to the two ends of servo-cylinder; The position feed back signal of said servo-cylinder is connected to controller through signaling line, and said controller also is connected to selector valve through guide line.
The utility model compared with prior art has following advantage.
1. no matter the utility model all has good applicability for the still two oil cylinders of lifting one's head of single head oil cylinder, stable action in the running, and control accuracy is high;
2. the utility model is simple in structure, compact, and volume is little, and cost is low, cost performance is high;
3. realize one-way valve and the dual lock-bit of selector valve, more reliable performance.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further to detail.
Accompanying drawing 1 is this apparatus structure principle schematic.
Embodiment
Described motor 2 is a speed-adjustable motor.
Described controller 1 input end can also connect outer position control signal end.
This Setup Controller 1 receives valve position feedback signal and control room's control signal of servo-cylinder 4; Both compare, computing, the rotating speed of output control signal control motor 2, and controller 1 links to each other with motor 2 through actuating cable; Motor 2 links to each other with one-way pump 3; One-way pump 3 oil outlets link to each other with relief valve 8, pressure monitoring unit 9, and one-way pump 3 oil outlets also connect selector valve 7 filler openings, and 7 two oil outlets of selector valve connect two Pilot operated check valves 5,6 respectively; The control oil channel of two Pilot operated check valves is cross connected to two oil outlets of said selector valve 7 respectively; Two Pilot operated check valves are connected respectively to the two ends of servo-cylinder 4, and the position feed back signal of servo-cylinder 4 is connected to controller 1 through signaling line, and controller 1 also is connected to selector valve 7 through guide line.
Combine accompanying drawing that this device is described further at present.
The flow control valve control type electrohydraulic actuator technological scheme of the utility model is concrete to realize that as follows motor 2 is connected with one-way pump 3, and said one-way pump 3 oil outlets link to each other with relief valve 8, pressure monitoring unit 9; One-way pump 3 oil outlets also connect selector valve 7P mouth, and said selector valve 7A mouth connects Pilot operated check valve 5, and selector valve 7B mouth connects Pilot operated check valve 6; The control oil channel that the control oil channel of one-way valve 5 is connected to selector valve 7B mouth, one-way valve 6 is connected to selector valve 7A mouth; Said one-way valve 5 connects an end of servo-cylinder 4, and said one-way valve 6 connects the other end of servo-cylinder 4, and the position signal of said servo-cylinder 4 is connected to controller 1 through signaling line; Said controller 1 links to each other with motor 2 through cable; Link to each other with selector valve through guide line, controller 7 is also accepted the outer position control signal, and said motor 2 is a speed-adjustable motor.
The oil cylinder position signal that position control signal that controller 1 reception control room is brought and servo-cylinder 4 are brought relatively carries out the deviation computing; According to the rotating speed of 7 switching-overs of operation result control selector valve and motor 2, motor 2 drives one-way pump 3 runnings, and band presses hydraulic oil to open two Pilot operated check valves 5,6 through selector valve 7; The direction motion that servo-cylinder 4 piston rods reduce to deviation, along with the deviation minimizing of the physical location and the location of instruction, controller 1 control motor 2 rotating speeds reduce; Meet the requirements up to deviation, controller 1 control motor 2 shuts down, selector valve 7 rule metas; Thereby the realization positioning control has also realized the position lock-bit simultaneously.
Claims (3)
1. flow control valve control type electrohydraulic actuator; Comprise motor (2); The one-way pump (3) that connects motor (2); One-way pump (3) oil outlet connects relief valve (8), selector valve (7) P mouth, it is characterized in that described one-way pump (3) oil outlet is provided with pressure monitoring unit (9); Described selector valve (7) A mouth connects an end of servo-cylinder (4) through Pilot operated check valve (5); Selector valve (7) B mouth is through the other end of Pilot operated check valve (6) connection servo-cylinder (4), and the control oil channel of described Pilot operated check valve (5) is connected to selector valve (7) B mouth, and the control oil channel of Pilot operated check valve (6) is connected to selector valve (7) A mouth; Described servo-cylinder (4) end is provided with position transducer and connects controller (1), and described controller (1) output connects motor (2) and selector valve (7).
2. the described a kind of flow control valve control type electrohydraulic actuator of root a tree name claim 1 is characterized in that described motor (2) is a speed-adjustable motor.
3. root a tree name claim 1 or 2 described a kind of flow control valve control type electrohydraulic actuators is characterized in that described controller (1) input end can also connect outer position control signal end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202154928U CN202108817U (en) | 2011-06-23 | 2011-06-23 | Electro-hydraulic actuator controlled by flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202154928U CN202108817U (en) | 2011-06-23 | 2011-06-23 | Electro-hydraulic actuator controlled by flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108817U true CN202108817U (en) | 2012-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202154928U Expired - Fee Related CN202108817U (en) | 2011-06-23 | 2011-06-23 | Electro-hydraulic actuator controlled by flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108817U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307060A (en) * | 2013-06-18 | 2013-09-18 | 南京埃尔法电液技术有限公司 | Direct drive type servo pump control electro-hydraulic combined driving hydraulic cylinder control system and control method |
| CN105508330A (en) * | 2016-01-12 | 2016-04-20 | 浙江大学 | Electromagnet-driven digital hydraulic servo actuator |
| CN106286485A (en) * | 2016-10-27 | 2017-01-04 | 李伟 | Linear motion workpiece, article are accurately positioned and resetting method and apparatus |
| CN107152434A (en) * | 2017-05-24 | 2017-09-12 | 扬州尼尔工程塑料有限公司 | A kind of hydraulic power system for realizing Flow-rate adjustment |
| CN108194336A (en) * | 2017-12-27 | 2018-06-22 | 湖南响箭重工科技有限公司 | Pressure control valve group for debugging pumping equipment, automatic debugging system, pumping equipment and automatic debugging method |
| CN109595212A (en) * | 2019-01-13 | 2019-04-09 | 北京合壹北科环保科技有限公司 | A kind of the solenoid valve servo mechanism and its control method of automatic control |
| CN115011430A (en) * | 2022-05-25 | 2022-09-06 | 广东美的厨房电器制造有限公司 | Pipeline system, wine blending machine and operation control method of wine blending machine |
-
2011
- 2011-06-23 CN CN2011202154928U patent/CN202108817U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307060A (en) * | 2013-06-18 | 2013-09-18 | 南京埃尔法电液技术有限公司 | Direct drive type servo pump control electro-hydraulic combined driving hydraulic cylinder control system and control method |
| CN103307060B (en) * | 2013-06-18 | 2016-02-03 | 南京埃斯顿自动化股份有限公司 | The oil hydraulic cylinder control system of directly driving type servo-pump control electricity liquid combination drive and controlling method |
| CN105508330A (en) * | 2016-01-12 | 2016-04-20 | 浙江大学 | Electromagnet-driven digital hydraulic servo actuator |
| CN106286485A (en) * | 2016-10-27 | 2017-01-04 | 李伟 | Linear motion workpiece, article are accurately positioned and resetting method and apparatus |
| CN107152434A (en) * | 2017-05-24 | 2017-09-12 | 扬州尼尔工程塑料有限公司 | A kind of hydraulic power system for realizing Flow-rate adjustment |
| CN108194336A (en) * | 2017-12-27 | 2018-06-22 | 湖南响箭重工科技有限公司 | Pressure control valve group for debugging pumping equipment, automatic debugging system, pumping equipment and automatic debugging method |
| CN109595212A (en) * | 2019-01-13 | 2019-04-09 | 北京合壹北科环保科技有限公司 | A kind of the solenoid valve servo mechanism and its control method of automatic control |
| CN115011430A (en) * | 2022-05-25 | 2022-09-06 | 广东美的厨房电器制造有限公司 | Pipeline system, wine blending machine and operation control method of wine blending machine |
| CN115011430B (en) * | 2022-05-25 | 2024-02-27 | 广东美的厨房电器制造有限公司 | Pipeline system, wine mixing machine and operation control method of wine mixing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20170623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |