CN202500840U - Electrohydraulic actuating mechanism with servo proportioning valve - Google Patents
Electrohydraulic actuating mechanism with servo proportioning valve Download PDFInfo
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- CN202500840U CN202500840U CN2012201196260U CN201220119626U CN202500840U CN 202500840 U CN202500840 U CN 202500840U CN 2012201196260 U CN2012201196260 U CN 2012201196260U CN 201220119626 U CN201220119626 U CN 201220119626U CN 202500840 U CN202500840 U CN 202500840U
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- servo
- control
- controller
- proportioning valve
- valve
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Abstract
The utility model relates to an electrohydraulic actuating mechanism with a servo proportioning valve. The electrohydraulic actuating mechanism comprises the servo proportioning valve, wherein an oil inlet of the servo proportioning valve is connected with an energy accumulator, a pressure monitoring unit and a filter; a port A of the servo proportioning valve is connected with a hydraulic control one-way valve; a port B of the servo proportioning valve is connected with another hydraulic control one-way valve; a control oil way of the hydraulic control one-way valve is connected to the port B of the servo proportioning valve; the control oil way of the other hydraulic control one-way valve is connected to the port A of the servo proportioning valve; the hydraulic control one-way valve is connected with one end of a servo oil cylinder, and the other hydraulic control one-way valve is connected with the other end of the servo oil cylinder; the front end of the servo oil cylinder is provided with a position sensor and is connected with a controller; and the controller is connected with a controller on the servo proportioning valve through a cable. Through comparison of a feedback signal from the position sensor and a given position signal from an operation room, the controller outputs a corresponding control signal to control the servo proportioning valve to act, thereby realizing control on the action direction of the oil cylinder, and thus realizing accurate control on the position of the oil cylinder. The electrohydraulic actuating mechanism provided by the utility model has the characteristics of high control accuracy, high anti-pollution capacity, high reliability and low energy consumption.
Description
Technical field
The utility model relates to a kind of servo proportion electrohydraulic control.
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 electricity liquid conversion and control hydraulic element are essentially servovalve and Proportional valve two big classes at present.Traditional servovalve electrohydraulic system Dynamic response is high, control accuracy is high, but contamination resistance is poor, leakage rate is big, energy loss is big, zero-bit squints easily.Proportional valve electrohydraulic system contamination resistance is strong, leakage rate is little, energy loss is low, but Dynamic response is on the low side, control accuracy is not high.
The model utility content
Its purpose of the utility model just is to provide a kind of servo proportion electrohydraulic control; Feedback signal and the given position signal of operating room through to position transducer compare; The corresponding control signal of controller output; Control servo ratio valve events is realized the control of cylinder action direction, thereby realizes the position is accurately controlled.Have the control accuracy height, contamination resistance is strong, reliability is high, characteristic of low energy consumption.
The technological scheme that realizes above-mentioned purpose and take comprises servo proportion, and said servo proportion filler opening links to each other with accumulator, pressure monitoring unit, filter; Said servo proportion A mouth connects Pilot operated check valve; Servo proportion B mouth connects Pilot operated check valve, and the control oil channel of Pilot operated check valve is connected to servo proportion B mouth, and the control oil channel of Pilot operated check valve is connected to servo proportion A mouth; Said Pilot operated check valve connects an end of servo-cylinder; Said Pilot operated check valve connects the other end of servo-cylinder, and the front end of said servo-cylinder is provided with position transducer and connects controller, and said controller links to each other with controller on the servo proportion through cable.
Compared with prior art the utlity model has following advantage.
Owing to adopted the feedback signal of position transducer and the structural design that given position signal compares controller output; Feedback signal and the given position signal of operating room through to position transducer compare; The corresponding control signal of controller output; Control servo ratio valve events is realized the control of cylinder action direction, thereby realizes the position is accurately controlled.Have the control accuracy height, contamination resistance is strong, reliability is high, characteristic of low energy consumption.
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
This device comprises servo proportion 4; Shown in accompanying drawing; Said servo proportion 4 filler openings link to each other with accumulator 9, pressure monitoring unit 8, filter 7, and said servo proportion 4A mouth connects Pilot operated check valve 2, and servo proportion 4B mouth connects Pilot operated check valve 3; The control oil channel of Pilot operated check valve 2 is connected to servo proportion 4B mouth; The control oil channel of Pilot operated check valve 3 is connected to servo proportion 4A mouth, and said Pilot operated check valve 2 connects an end of servo-cylinder 1, and said Pilot operated check valve 3 connects the other end of servo-cylinder 1; The front end of said servo-cylinder 1 is provided with position transducer 11 and connects controller 10, and said controller 10 links to each other with controller on the servo proportion 4 through cable.
Said controller 10 is also accepted the outer position control signal.
Embodiment; This device comprises that servo-cylinder feeds back to controller, controller output signal control servo proportion, servo ratio valve outlet port A, B chamber through position transducer with current position signal and connects two Pilot operated check valves respectively; The Pilot operated check valve control oil channel that links to each other with servo proportion A chamber is connected to the B chamber of servo proportion; The Pilot operated check valve control oil channel that links to each other with servo proportion B chamber is connected to the A chamber of servo proportion; Two Pilot operated check valves are connected respectively to two chambeies of servo-cylinder, and the outlet of power oil sources also connects one-way valve, secondary filter, accumulator and pressure monitoring unit respectively.The utility model compares through feedback signal and the given position signal of operating room to position transducer; The corresponding control signal of controller output; Control servo ratio valve events is realized the control of cylinder action direction, thereby realizes the position is accurately controlled.
The practical implementation of this device is following: servo proportion 4; Shown in accompanying drawing; Said servo proportion 4 filler openings link to each other with accumulator 9, pressure monitoring unit 8, filter 7, and said servo proportion 4A mouth connects Pilot operated check valve 2, and servo proportion 4B mouth connects Pilot operated check valve 3; The control oil channel of Pilot operated check valve 2 is connected to servo proportion 4B mouth; The control oil channel of Pilot operated check valve 3 is connected to servo proportion 4A mouth, and said Pilot operated check valve 2 connects an end of servo-cylinder 1, and said Pilot operated check valve 3 connects the other end of servo-cylinder 1; The front end of said servo-cylinder 1 is provided with position transducer 11 and connects controller 10, and said controller 10 links to each other with controller on the servo proportion 4 through cable.Controller 10 is also accepted the outer position control signal.
The oil cylinder position signal that position control signal that controller 10 reception control rooms are brought and position transducer 11 are brought relatively carries out the deviation computing; According to operation result control servo proportion 4 valve core opening direction and openings of sizes, thus control hydraulic oil direction and size, and hydraulic oil is opened two Pilot operated check valves 2,3; The direction motion that oil cylinder 1 piston rod reduces to deviation, along with the deviation minimizing of the physical location and the location of instruction, controller 10 control servo proportion openings reduce; Meet the requirements up to deviation; Controller 10 control servo ratio valve core rule homes, thus realize positioning control, also realized the position lock-bit simultaneously.
Compare with existing product and to have following characteristics:
1. the utility model is equivalent to the Proportional valve electrohydraulic control, stable action in the running, and control accuracy is high;
2. the utility model leakage rate is minimum, is applied in to have high energy-conserving action under the long-term work condition;
When control signal was zero, the servo ratio valve core was in security bit, more reliable performance.
Claims (2)
1. servo proportion electrohydraulic control; Comprise servo proportion (4); It is characterized in that; Said servo proportion (4) filler opening links to each other with accumulator (9), pressure monitoring unit (8), filter (7), and said servo proportion (4) A mouth connects Pilot operated check valve (2), and servo proportion (4) B mouth connects Pilot operated check valve (3); The control oil channel of Pilot operated check valve (2) is connected to servo proportion (4) B mouth; The control oil channel of Pilot operated check valve (3) is connected to servo proportion (4) A mouth, and said Pilot operated check valve (2) connects an end of servo-cylinder (1), and said Pilot operated check valve (3) connects the other end of servo-cylinder (1); The front end of said servo-cylinder (1) is provided with position transducer (11) and connects controller (10), and said controller (10) links to each other with controller on the servo proportion (4) through cable.
2. a kind of servo proportion electrohydraulic control according to claim 1 is characterized in that said controller (10) is also accepted the outer position control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201196260U CN202500840U (en) | 2012-03-27 | 2012-03-27 | Electrohydraulic actuating mechanism with servo proportioning valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201196260U CN202500840U (en) | 2012-03-27 | 2012-03-27 | Electrohydraulic actuating mechanism with servo proportioning valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500840U true CN202500840U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201196260U Expired - Fee Related CN202500840U (en) | 2012-03-27 | 2012-03-27 | Electrohydraulic actuating mechanism with servo proportioning valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500840U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279198A (en) * | 2014-11-06 | 2015-01-14 | 威海华东数控股份有限公司 | Anti-collision sudden stop hydraulic system of hydraulic cylinder of grinding machine and control method of anti-collision sudden stop hydraulic system |
| CN104314884A (en) * | 2013-09-11 | 2015-01-28 | 昆山新金福精密电子有限公司 | Hydraulic fine adjustment system |
| CN105782548A (en) * | 2016-04-20 | 2016-07-20 | 浙江工业职业技术学院 | Large butterfly valve system driven by valve control spiral swing oil cylinder and method for controlling flow of pipeline |
| CN106584914A (en) * | 2016-12-08 | 2017-04-26 | 太原重型机械集团工程技术研发有限公司 | Pressure applying equipment |
| CN106837916A (en) * | 2015-12-03 | 2017-06-13 | 中国航空工业第六八研究所 | A kind of actuator based on one-way hydraulic pump |
| CN107605863A (en) * | 2017-10-10 | 2018-01-19 | 宁波创力液压机械制造有限公司 | A kind of cable flexing test device |
| CN113280021A (en) * | 2021-05-11 | 2021-08-20 | 成都正山机械制造有限公司 | Integrated proportional valve control method |
-
2012
- 2012-03-27 CN CN2012201196260U patent/CN202500840U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314884A (en) * | 2013-09-11 | 2015-01-28 | 昆山新金福精密电子有限公司 | Hydraulic fine adjustment system |
| CN104279198A (en) * | 2014-11-06 | 2015-01-14 | 威海华东数控股份有限公司 | Anti-collision sudden stop hydraulic system of hydraulic cylinder of grinding machine and control method of anti-collision sudden stop hydraulic system |
| CN106837916A (en) * | 2015-12-03 | 2017-06-13 | 中国航空工业第六八研究所 | A kind of actuator based on one-way hydraulic pump |
| CN105782548A (en) * | 2016-04-20 | 2016-07-20 | 浙江工业职业技术学院 | Large butterfly valve system driven by valve control spiral swing oil cylinder and method for controlling flow of pipeline |
| CN106584914A (en) * | 2016-12-08 | 2017-04-26 | 太原重型机械集团工程技术研发有限公司 | Pressure applying equipment |
| CN106584914B (en) * | 2016-12-08 | 2019-03-15 | 太原重型机械集团工程技术研发有限公司 | Pressure application devices |
| CN107605863A (en) * | 2017-10-10 | 2018-01-19 | 宁波创力液压机械制造有限公司 | A kind of cable flexing test device |
| CN113280021A (en) * | 2021-05-11 | 2021-08-20 | 成都正山机械制造有限公司 | Integrated proportional valve control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20130327 |