CN204851859U - Servo energy -saving hydraulic station - Google Patents
Servo energy -saving hydraulic station Download PDFInfo
- Publication number
- CN204851859U CN204851859U CN201520497838.6U CN201520497838U CN204851859U CN 204851859 U CN204851859 U CN 204851859U CN 201520497838 U CN201520497838 U CN 201520497838U CN 204851859 U CN204851859 U CN 204851859U
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- hydraulic
- oil
- servo
- energy
- actuating motor
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Abstract
The utility model belongs to the hydraulic drive field, in particular to servo energy -saving hydraulic station, including hydraulic circuit and electric loop, hydraulic circuit includes the oily temperature oil level gauge that supplies liquid unit, liquid accuse unit, the pneumatic cylinder as actuating mechanism, forced air cooler and whole monitoring, and the electric loop includes controller and the encoder that is used for measuring the servo motor rotational speed. According to the flow pressure of hydraulic pressure station needs, the corresponding power of adjustment variable pump direct output, the beneficial effect of this system lies in: cancel traditional constitution PID and adjusted various valves, through two closed loop adjust pressure and flow, realized the energy -conservation and the automatically regulated at hydraulic pressure station.
Description
Technical field
The utility model belongs to hydraulic transmission field, particularly a kind of energy-saving servo hydraulic station.
Background technique
Hydraulic station is the hydraulic power device be made up of oil hydraulic pump, motor, fuel tank, directional control valve, throttle valve, relief valve etc. or the hydraulic pressure installation comprising control valve, and namely PID regulates various valve.By the flow direction of drive unit requirement, pressure and flow fuel feeding, what be applicable to that drive unit is separated with hydraulic station is mechanically various, and be connected with oil pipe with drive unit (oil cylinder or motor) by hydraulic station, hydraulic system both can realize the action of various regulation.
For hydraulic station, each stage is to pressure, the coupling of flow is each different, and the power of oil pump motor is according to maximum load configuration in its running, and corresponding hydraulic machinery, as comparatively large in only having high-voltage lock mould and the load of injection moulding working stage in the operation cycle of injection machine, other working stages are general less, almost nil in the load of cooling procedure.For oil pump motor, injection machine process is the load condition for change, in the hydraulic system of metering pump, oil pump motor provides constant flow with constant rotating speed, and the required pressure of work and uninterrupted are that depended on pressure Proportional valve and flow proportion valve regulate, come pilot pressure or uninterrupted by the aperture of adjustment pressure or flow proportion valve.Unnecessary hydraulic oil is refluxed by relief valve, and this process is called that high pressure dams, and high pressure kicks can make hydraulic oil oil temperature raise, energy waste and can cause heat loss to the hydraulic component of oil hydraulic circuit.
Model utility content
The purpose of this utility model is to provide a kind of energy-saving servo hydraulic station, this hydraulic station is by gathering real-time traffic and real-time pressure, form the double loop system of flow closed loop control and pressure closed loop control, thus effectively suppress energy waste, to reach the effect of reliable and energy-saving.
To achieve these goals, a kind of energy-saving servo hydraulic station that the utility model provides, comprises oil hydraulic circuit and electric loop,
Oil hydraulic circuit comprises the oil temperature oil gauge of liquid-supply unit, hydraulic control unit, oil hydraulic cylinder, forced air cooler and monitored over time as actuator, hydraulic oil is finally got back to liquid-supply unit by hydraulic control unit, oil hydraulic cylinder, forced air cooler successively from liquid-supply unit and is formed loop
The actuating motor that fuel tank, variable displacement pump and drive variable displacement pump that liquid-supply unit comprises provides hydraulic oil run, the filler opening of described fuel tank is provided with air-strainer, and the oil outlet of fuel tank is connected with variable displacement pump, and variable delivery side of pump is connected with actuating motor,
Hydraulic control unit comprises variable displacement pump outlet end and connects hydraulic integrated valve group, the pressure transducer be connected with hydraulic integrated valve group oil outlet, the servo driver being positioned at the electric control box on the right side of fuel tank and being positioned on the left of fuel tank, hydraulic integrated valve group comprises multiple hydraulic integrated valve block
Electric loop comprises the controller of hydraulic station and the encoder for measuring actuating motor rotating speed, and encoder electrical signal is connected to and between servo driver and actuating motor, servo driver, pressure transducer are connected with controller by electrical signal; Servo driver comprises main control unit, reduces the braking resistor of the filtering circuit of noise and elimination overvoltage, main control unit, filtering circuit are electrically connected with braking resistor, the EMC filter that filtering circuit comprises circuit breaker, the contactor be connected with circuit breaker electric and is electrically connected with contactor.
The utility model has the advantage of: servo driver receives pressure, flux signal from the controller of hydraulic station, and then certain electric current is flowed to actuating motor, current conversion is become torque by actuating motor, and variable displacement pump is passed in torque.Actuating motor drives variable displacement pump to rotate, and variable displacement pump is bought oil after oil suction from fuel tank, and be the pressure energy of hydraulic oil by changes mechanical energy, hydraulic oil carries out the fuel-displaced of multiple passage by hydraulic integrated valve group, and the oil hydraulic cylinder of pushing executing mechanism makes mechanical movement.Wherein, in order to prevent occurring unnecessary hydraulic oil in Machine Movement Process, the signal of the hydraulic valve block oil outlet of pressure transducer testing hydraulic integrated valve group, and feed back to servo driver, servo driver will compare according to setting value and value of feedback, and automatically adjust the rotating speed of actuating motor.The rotational position of actuating motor measured by encoder, and whether the position monitoring actuating motor is constantly correct.The main control unit of servo driver adopts pressure control mode and flow control mode two kinds of control modes to control the rotating speed of actuating motor, form the double loop system of flow closed loop control and pressure closed loop control, the oil hydraulic circuit that the many valves of traditional PID coordinate three phase electric machine can be replaced.Actuating motor can be avoided so always to drive oil hydraulic pump to rotate with rated speed, produce necessary electric energy loss, improve hydraulic station working efficiency, reliability simultaneously, improve the working life of hydraulic station.
Be provided with air-strainer in oil hydraulic circuit, air-strainer is also called oil filler, and the impurity screening when adding hydraulic oil toward fuel tank, guarantees pipeline not because blocking phenomenon appears in the impurity in hydraulic oil, ensures hydraulic station safe handling.
Be provided with oil temperature oil gauge in oil hydraulic circuit, in monitoring fuel tank, the temperature of hydraulic oil capacity and hydraulic oil, makes hydraulic component not easily produce fault, improves machine performance and life-span.
Electric control box is that whole energy-saving servo hydraulic station electric line connects aggregation, guarantees that circuit is neat and artistic, and independent control box makes hydraulic station structure simple, and electric line is not easily made mistakes.
The noise that filtering circuit in servo driver is mainly used in suppressing circuit noise and higher harmonics and switch power to produce and high-frequency harmonic.EMC filter is wherein serially connected with the switch control rule output terminal of automation control appliance, during eliminating rear class various inductive load switching electricity, produce electromagnetic interference and spark interference.
Eliminate the braking resistor of overvoltage, actuating motor falls in process at the operating frequencies, will be in regenerative braking state, and the kinetic energy of dragging system will feed back in DC circuit, makes VDC UD constantly increase, and even may reach dangerous stage.Therefore, the energy ezpenditure of regeneration to DC circuit must be fallen, UD is remained in allowed band.Braking resistor is just used to consume this part energy.
Preferably, variable displacement pump is crescent gear pump.Servo-system is energy-conservation is replaced with crescent gear pump by oil pump exactly, seepage can be reduced, and utilize hydraulic station pcs signal directly to control actuating motor, according to the flow pressure that system works needs, adjustment crescent gear pump, the corresponding power of direct output, reduces the energy consumption of crude oil pump and unnecessary power consumption.
Preferably, actuating motor is AC permanent-magnet synchronous servo motor.AC permanent-magnet synchronous servo motor adopts permanent magnet to generate the magnetic field of motor, and without the need to field coil also without the need to field current, efficiency high structure is simple.
Preferably, forced air cooler return opening is provided with filter.Hydraulic integrated valve block return opening connects forced air cooler, and forced air cooler return opening connects filter.The impurity contained by the hydraulic oil getting back to fuel tank can be reduced, reduce hydraulic fluid temperature.
Accompanying drawing explanation
Fig. 1 is the hydraulic loop structure figure of energy-saving servo hydraulic station;
Fig. 2 is the electric loop structured flowchart of energy-saving servo hydraulic station.
Reference character is enumerated: forced air cooler 1, oil temperature oil gauge 2, variable displacement pump 3, actuating motor 4, fuel tank 5, air-strainer 6, hydraulic integrated valve group 7, pressure transducer 8, electric control box 9, servo driver 10, the controller 11 of hydraulic station, encoder 12.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail below by embodiment:
The oil hydraulic circuit of a kind of energy-saving servo hydraulic station as depicted in figs. 1 and 2 comprises liquid-supply unit, hydraulic control unit, as the oil hydraulic cylinder of actuator, the oil temperature oil gauge 2 of forced air cooler 1 and monitored over time, hydraulic oil passes through hydraulic control unit successively from liquid-supply unit, oil hydraulic cylinder, forced air cooler 1, finally get back to liquid-supply unit and form loop, liquid-supply unit comprises the variable displacement pump 3 providing hydraulic pressure to hydraulic station, wherein variable displacement pump 3 is crescent gear pump, low noise, there is axis and radial pressure Compensation Design simultaneously, the actuating motor 4 driving variable displacement pump 3 to run and the fuel tank 5 be positioned at below actuating motor 4, the filler opening of fuel tank 5 is provided with air-strainer 6, wherein actuating motor 4 and variable displacement pump 3 all adopt horizontal arrangement to be arranged on the upper cover plate of fuel tank 5, make hydraulic station overall volume small and exquisite, compact structure.Actuating motor 4 and variable displacement pump 3 adopt involute splines transmission, strengthen carrying and echo power, and actuating motor 4 and variable displacement pump 3 life-span are lengthened, and meanwhile, involute splines transmission does not produce radial thrust, reduce heating and power consume, save the energy.
Hydraulic control unit comprises variable displacement pump 3 outlet end and connects hydraulic integrated valve group 7, the pressure transducer 8 be connected with hydraulic integrated valve group 7 oil outlet, the servo driver 10 being positioned at the electric control box 9 on the right side of fuel tank 5 and being positioned on the left of fuel tank 5, hydraulic integrated valve group 7 comprises multiple hydraulic integrated valve block.
Hydraulic integrated valve group 7 is easy for installation, is directly fixed on variable displacement pump 3 oil outlet, loop choice variation.Adopt hydraulic integrated valve group 7 to substitute traditional combination brake switch and proporting structure, save space, simplified processing process, rate of fault is decreased while reducing number of spare parts, eliminate in use loaded down with trivial details maintenance process, rationally, polluting not easily appears in system in each element structure distribution.
Electric loop comprises the controller 11 of hydraulic station and the encoder 12 for measuring actuating motor 4 rotating speed, wherein the controller 11 of hydraulic station is computer, encoder 12 electrical signal is connected to and between servo driver 10 and actuating motor 4, servo driver 10, pressure transducer 8 are connected with the controller 11 of hydraulic station by electrical signal; Servo driver 10 comprises main control unit, reduces the braking resistor of the filtering circuit of noise and elimination overvoltage, main control unit, filtering circuit are electrically connected with braking resistor, the EMC filter that filtering circuit comprises circuit breaker, the contactor be connected with circuit breaker electric and is electrically connected with contactor.
For the hydraulic station by servo-drive, motor is replaced by actuating motor 4 by common electric machine, the rotating speed of actuating motor 4 is adjustable, hydraulic station converts the Setting signal of pressure and flow to DC0-10V or 4-20mA signal to servo driver 10, and servo driver 10 drags actuating motor 4 again and rotates the power source providing flow system flow and pressure.The real-time traffic of servo driver 10 acquisition system and real-time pressure, form the double loop system of flow closed loop control and pressure closed loop control, control accuracy is high.
Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite not departing from the utility model structure; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (4)
1. an energy-saving servo hydraulic station, comprises oil hydraulic circuit and electric loop, it is characterized in that:
Described oil hydraulic circuit comprises the oil temperature oil gauge of liquid-supply unit, hydraulic control unit, oil hydraulic cylinder, forced air cooler and monitored over time as actuator, hydraulic oil is finally got back to liquid-supply unit by hydraulic control unit, oil hydraulic cylinder, forced air cooler successively from liquid-supply unit and is formed loop
The actuating motor that fuel tank, variable displacement pump and drive variable displacement pump that described liquid-supply unit comprises provides hydraulic oil run, the filler opening of described fuel tank is provided with air-strainer, and the oil outlet of fuel tank is connected with variable displacement pump, and variable delivery side of pump is connected with actuating motor,
Described hydraulic control unit comprises variable displacement pump outlet end and connects hydraulic integrated valve group, the pressure transducer be connected with hydraulic integrated valve group oil outlet, the servo driver being positioned at the electric control box on the right side of fuel tank and being positioned on the left of fuel tank, described hydraulic integrated valve group comprises multiple hydraulic integrated valve block
Described electric loop comprises the controller of hydraulic station and the encoder for measuring actuating motor rotating speed, described encoder electrical signal is connected to and between servo driver and actuating motor, described servo driver, pressure transducer are connected with controller by electrical signal; Described servo driver comprises main control unit, reduces the braking resistor of the filtering circuit of noise and elimination overvoltage, main control unit, filtering circuit are electrically connected with braking resistor, the EMC filter that described filtering circuit comprises circuit breaker, the contactor be connected with circuit breaker electric and is electrically connected with contactor.
2. energy-saving servo hydraulic station according to claim 1, is characterized in that: described variable displacement pump is crescent gear pump.
3. energy-saving servo hydraulic station according to claim 1, is characterized in that: described actuating motor is AC permanent-magnet synchronous servo motor.
4. energy-saving servo hydraulic station according to claim 1, is characterized in that: described forced air cooler return opening is provided with filter, and described hydraulic integrated valve block return opening connects forced air cooler, and described forced air cooler return opening connects filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520497838.6U CN204851859U (en) | 2015-07-10 | 2015-07-10 | Servo energy -saving hydraulic station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520497838.6U CN204851859U (en) | 2015-07-10 | 2015-07-10 | Servo energy -saving hydraulic station |
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| Publication Number | Publication Date |
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| CN204851859U true CN204851859U (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520497838.6U Expired - Fee Related CN204851859U (en) | 2015-07-10 | 2015-07-10 | Servo energy -saving hydraulic station |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194910A (en) * | 2016-08-24 | 2016-12-07 | 宁波弘讯科技股份有限公司 | A kind of press and hydraulic pressure closed-loop control system thereof and method |
| CN106640793A (en) * | 2016-12-19 | 2017-05-10 | 徐州工程学院 | Supply hydraulic station device for carbon tetrachloride treatment and operating method thereof |
| CN110206789A (en) * | 2019-04-17 | 2019-09-06 | 深圳市恩普达工业系统有限公司 | A kind of mute hydraulic servo oil source apparatus |
| CN110579980A (en) * | 2019-08-08 | 2019-12-17 | 中国地质大学（武汉） | Universal type servo control algorithm validity verification device |
| CN111872240A (en) * | 2020-07-27 | 2020-11-03 | 常州森派智能装备有限公司 | Servo hydraulic squeeze riveter |
-
2015
- 2015-07-10 CN CN201520497838.6U patent/CN204851859U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194910A (en) * | 2016-08-24 | 2016-12-07 | 宁波弘讯科技股份有限公司 | A kind of press and hydraulic pressure closed-loop control system thereof and method |
| CN106640793A (en) * | 2016-12-19 | 2017-05-10 | 徐州工程学院 | Supply hydraulic station device for carbon tetrachloride treatment and operating method thereof |
| CN106640793B (en) * | 2016-12-19 | 2017-12-29 | 徐州工程学院 | Hydraulic station device and its method of work are supplied in a kind of carbon tetrachloride processing |
| CN110206789A (en) * | 2019-04-17 | 2019-09-06 | 深圳市恩普达工业系统有限公司 | A kind of mute hydraulic servo oil source apparatus |
| CN110579980A (en) * | 2019-08-08 | 2019-12-17 | 中国地质大学（武汉） | Universal type servo control algorithm validity verification device |
| CN111872240A (en) * | 2020-07-27 | 2020-11-03 | 常州森派智能装备有限公司 | Servo hydraulic squeeze riveter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180731 Address after: 523000 Nan Ge industrial area, Dao Jiao Town, Dongguan, Guangdong Patentee after: DONGGUAN QUNLI MOTOR Co.,Ltd. Address before: 402761 Qinggang Industrial Park, Qinggang street, Bishan, Chongqing Patentee before: CHONGQING BOPING HYDRAULIC MACHINERY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 |