CN201007274Y - Numerical control hydraulic system of switch reluctance motor pump - Google Patents
Numerical control hydraulic system of switch reluctance motor pump Download PDFInfo
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- CN201007274Y CN201007274Y CNU2006201446044U CN200620144604U CN201007274Y CN 201007274 Y CN201007274 Y CN 201007274Y CN U2006201446044 U CNU2006201446044 U CN U2006201446044U CN 200620144604 U CN200620144604 U CN 200620144604U CN 201007274 Y CN201007274 Y CN 201007274Y
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- hydraulic system
- electric machine
- machine controller
- numerical control
- reluctance motor
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Abstract
The utility model relates to a switch reluctance motor pump numerical control hydraulic system, belonging to the hydraulic drive and the hydraulic machinery field, characterized in that the utility model comprises a hydraulic system and a reversible stepless speed regulation system which are connected with each other. Compared with the prior art, the utility model can realize the speed changing, the direction changing, and the pressure and the placement numerical control, largely simplify the structure of the hydraulic system, and also completely eliminate the throttle loss existed in the system. At the same time, the utility model has the advantages of having simple structure, reliable working, high mechanical intensity, high effective energy saving, high speed regulation precision and small starting current, being able to do the positive and reversible operation frequently and realize the high efficiency operation in the wide speed regulation range, and the like. The utility model is applicable for transport machinery, forging press machinery, metallurgy machinery, molding machinery, oil press, injection machine, die casting machine, rolling mill pressurization machinery, and the like.
Description
Technical field
The utility model relates to a kind of numerical control hydraulic system of switch reluctance motor pump, belongs to hydraulic transmission and hydraulic machinery field.
Background technique
Hydraulic system that at present can numerical control adopts electrohydraulic servo system more, and it mainly is made up of electric element, electrohydraulic control, hydraulic actuator, feedback Detecting element and controlling object.The problem that exists is: servo-system is responsive especially to liquid contamination; Electrohydraulic servo system needs a cover pumping station system that the constant pressure liquid body source is provided; The induced pressure maximum that the servovalve of electrohydraulic servo system provides has only 2/3 of fluid supply pressure, and the system capacity waste is serious; Because electrohydraulic servo system efficient is low, the system liquid temperature is raise, thereby system need be equipped with cooling unit, cause system bulk increase and complicated, cost up.The existing following several forms of Valveless Electro-hydraulic Servo System: AC servo motor adds metering pump, and the AC asynchronous motor frequency control of motor speed adds quantitative oil hydraulic pump, AC asynchronous motor addition of variable pump etc.; Because defectives such as the starting current of motor itself is big, starting is little with overload torque, and complexity is controlled in its speed governing and torque, and speed adjusting performance is undesirable, waste energy, and be difficult to promote the use of.
The model utility content
The technical problems to be solved in the utility model is: a kind of hydraulic system that can realize speed change, break-in and pressure, displacement numerical control is provided, can simplifies the numerical control hydraulic system of switch reluctance motor pump of the structure of hydraulic system.
The utility model adopts following technological scheme: this numerical control hydraulic system of switch reluctance motor pump is characterized in that: comprise hydraulic system and reversible continuous speed regulation system, hydraulic system links to each other with reversible continuous speed regulation system.
Reversible continuous speed regulation system comprises: switched reluctance machines, sensor and electric machine controller, and switched reluctance machines links to each other with hydraulic system, and hydraulic system links to each other with electric machine controller by sensor.Electric machine controller is used for the drive controlling for switched reluctance machines.
Hydraulic system comprises oil hydraulic pump, hydraulic tubing system, oil hydraulic cylinder.
Sensor comprises pressure transducer, displacement transducer.
Switched reluctance machines links to each other with hydraulic system, electric machine controller connects switched reluctance machines, switched reluctance machines connects oil hydraulic pump, oil hydraulic pump connects oil hydraulic cylinder by the hydraulic tubing system, pressure transducer is set on pipeline, displacement transducer is set on fuselage, and the output signal of pressure transducer and displacement transducer is connected electric machine controller.
Electric machine controller comprises display device and keyboard.
The hydraulic tubing system comprises fluid box, one-way valve, Pilot operated check valve and pipeline, and the input end of one-way valve is connected fluid box with the output terminal of Pilot operated check valve, the input end connecting tube of the output terminal of one-way valve and Pilot operated check valve.
Reversible continuous speed regulation system circuit connects: the A of switched reluctance machines U2, A ', B, B ', C, C ', ANG port connect A, A ', B, B ', C, C ', the ANG port of electric machine controller U1 respectively, the L1 of electric machine controller U1, L2, L3 port connect power supply, two of pressure transducer U3, displacement transducer U4 connect AI1, AI2, the AI3 port of electric machine controller U1 respectively, and display device U5 and keyboard U6 are connected I/O1, the I/O2 port of electric machine controller U1 respectively.
Working principle is:
Input to electric machine controller displacement, pressure setting numerical value by keyboard and display screen.System relies on and changes the output flow that rotating speed of motor changes oil hydraulic pump, reaches the purpose of regulating hydraulic cylinder works actuator speed, break-in, pressure and displacement.During work, switched reluctance machines drives oil hydraulic pump just to be changeed, hydraulic cylinder works chamber entrance pressure power liquid, and the hydraulic cylinder works stroke, the liquid in backhaul chamber enters oil hydraulic pump.Pressure transducer and displacement transducer are passed to electric machine controller to output signal.Electric machine controller carries out computing, control switch reluctance motor and oil hydraulic pump rotating speed according to the information and the setting numerical value of sensor feedback.When the oil hydraulic cylinder backhaul, motor controller controls switched reluctance machines and oil hydraulic pump counter-rotating, backhaul chamber entrance pressure power liquid, the liquid of active chamber enters oil hydraulic pump.
Compared with prior art, the beneficial effect that the utility model had is: can realize speed change, break-in and pressure, displacement numerical control, switched reluctance machines is directly finished speed change, break-in and pressure, action control is regulated in displacement, has Electric Machine Control flexibly and the hydraulic pressure big two-fold advantage of exerting oneself, hydraulic control devices such as flow control valves such as relief valve and reduction valve equal pressure control valve, series flow control valve and throttle valve and selector valve have been saved, simplify the structure of hydraulic system greatly, the restriction loss that exists in the elimination system fully.Have simultaneously simple in structure, reliable operation, mechanical strength height, energy-efficient, adjusting speed accuracy is high, starting current is little, frequent advantage such as clockwise and anticlockwise operation, can realize high-efficiency operation in the speed adjustable range of broadness.Other has liquid contamination receptance low, and liquid heats up little, need not source of secondary fluid, has the excellent development application prospect.
Description of drawings
Fig. 1 is the utility model embodiment's a system principle diagram;
Fig. 2 is circuit theory diagrams;
Fig. 3 is system and hydraulic system structure schematic representation.
Fig. 1-3 weight: 1 (U1) electric machine controller 2 (U2) switched reluctance machines, 3 oil hydraulic pumps, 4 fluid boxes, 5 one-way valves, 6 Pilot operated check valves, 7 pipelines, 8 oil hydraulic cylinder 9 (U3) pressure transducer 10 (U4) displacement transducers, 11 fuselages, 12 piston rod 13 (U5) display device 14 (U6) keyboards.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
With reference to Fig. 1:
Electric machine controller connects switched reluctance machines, switched reluctance machines connects oil hydraulic pump, oil hydraulic pump connects oil hydraulic cylinder by the hydraulic tubing system, pressure transducer is set on pipeline, displacement transducer is set on fuselage, the output signal of pressure transducer and displacement transducer is connected electric machine controller, and electric machine controller 1 external-connected port is provided with keyboard 14 and display device 13.
With reference to Fig. 2:
The A of switched reluctance machines U2, A ', B, B ', C, C ', ANG port connect A, A ', B, B ', C, C ', the ANG port of electric machine controller U1 respectively, the L1 of electric machine controller U1, L2, L3 port connect power supply, two of pressure transducer U3, displacement transducer U4 connect AI1, AI2, the AI3 port of electric machine controller U1 respectively, and display device U5 and keyboard U6 are connected I/O1, the I/O2 port of electric machine controller U1 respectively.
Electric machine controller U1 also can connect input/output interface, 232 communication interfaces of other switching values, analog amount etc., and as required, electric machine controller 1 can externally be used for the braking resistor of control switch reluctance motor 2 fast braking.
With reference to Fig. 3:
Switched reluctance machines 2 is connected with oil hydraulic pump 3, oil hydraulic pump 3 is connected with oil hydraulic cylinder 8 by the hydraulic tubing system, the hydraulic tubing system is provided with one-way valve 5 and Pilot operated check valve 6, the output terminal of the input end of one-way valve 5 and Pilot operated check valve 6 is connected fluid box 4, the input end connecting tube 7 of the output terminal of one-way valve 5 and Pilot operated check valve 6, on the pipeline 7 in oil hydraulic cylinder 8 active chambers and oil hydraulic cylinder 8 backhaul chambeies pressure transducer 9 is set, displacement transducer 10 is set on fuselage 11, the signal of pressure transducer 9 and displacement transducer 10 is connected with electric machine controller 1, and the output signal of electric machine controller 1 is connected with switched reluctance machines 2.
Switched reluctance machines 2 is formed reversible continuous speed regulation system with electric machine controller 1, and switched reluctance machines 2 its stator and rotor have the silicon steel punching of salient pole and teeth groove to be overrided to form by dashing.Rotor had not both had winding and had not had permanent magnet yet, and stator adopts concentrates winding, and winding current is unidirectional.When the stator phase winding was switched on, the magnetic field that is produced was owing to magnetic line of force distortion produces tangential magnetic pull, and torque of magnetic force makes the rotor rotation.Electric machine controller 1 is made up of embedded microprocessor, PLD, insulation Gate bipolar transistor and drive circuit thereof, photoelectricity isolation, communication interface, display screen, keyboard, power electronic devices and software.
Working principle: with pressure value, displacement numerical value input electric machine controller 1, this numerical value can show by display device 13 by keyboard 14.Piston rod 12 stretches out during work, and switched reluctance machines 2 drives oil hydraulic pump 3 just to be changeed, oil hydraulic cylinder 8 active chamber entrance pressure power liquid, and oil hydraulic cylinder 8 working strokes, the liquid in oil hydraulic cylinder 8 backhaul chambeies enters oil hydraulic pump 3.
The liquid of oil hydraulic cylinder 8 active chamber deficiencies by one-way valve 5 from fluid box 4 fluid infusion bodies to oil hydraulic pump 3 the inlet.Pressure transducer 9 is passed to electric machine controller 1 to pressure information, and displacement transducer 10 is passed to electric machine controller 1 to displacement information.Electric machine controller 1 carries out computing, control switch reluctance motor 2 and oil hydraulic pump 3 rotating speeds according to pressure transducer 9 and displacement transducer 10 feedacks with setting numerical value.When pressure transducer 9 numerical value are lower than the numerical value of setting, switched reluctance machines 2 runs up, when pressure transducer 9 numerical value during near the numerical value set, the 2 beginning reduction of speed runnings of electric machine controller 1 control switch reluctance motor, be unlikely to surpass setting numerical value with the pressure value that guarantees hydraulic system, satisfy requirements of one's work.And the running of switched reluctance machines 2 and oil hydraulic pump 3 is subjected to the control of displacement transducer 10, and the output signal of displacement transducer 10 connects electric machine controller 1, and electric machine controller 1 control switch reluctance motor 2 and oil hydraulic pump 3 are carried out the operation of slowing down, stop, reversing.Piston rod 12 retractions during backhaul, electric machine controller 1 control switch reluctance motor 2 and oil hydraulic pump 3 counter-rotatings, oil hydraulic cylinder 8 backhaul chamber entrance pressure power liquid are opened Pilot operated check valve 6 simultaneously, and oil hydraulic cylinder 8 active chamber excess liquid are returned fluid box 4.Similar to working stroke, when pressure transducer 9 numerical value are lower than the numerical value of setting, switched reluctance machines 2 runs up, when pressure transducer 9 numerical value during near the numerical value set, the 2 beginning reduction of speed runnings of electric machine controller 1 control switch reluctance motor, be unlikely to surpass setting numerical value with the pressure value that guarantees hydraulic system, satisfy requirements of one's work.And the running of switched reluctance machines 2 and oil hydraulic pump 3 is subjected to the control of displacement transducer 10, and the output signal of displacement transducer 10 connects electric machine controller 1, and electric machine controller 1 control switch reluctance motor 2 and oil hydraulic pump 3 are carried out deceleration, out of service.
The reversible continuous speed regulation system that switched reluctance machines 2 and electric machine controller 1 are formed is a speed control system a kind of novelty, high performance-price ratio.That this speed control system has is simple in structure, reliable operation, mechanical strength height, energy-efficient, adjusting speed accuracy is high, starting current is little, frequently advantage such as clockwise and anticlockwise operation can realize high-efficiency operation in the speed adjustable range of broadness.
If more outer signal is arranged, the utility model can add programmable controller, outer signal can be connected to programmable controller, and programmable controller connects electric machine controller 1 by serial ports.
The utility model can add industrial computer as upper-position unit, and industrial computer connects programmable controller and electric machine controller 1.
The utility model can add position limit switch or position transducer connects programmable controller.When oil hydraulic cylinder 8 travel speeds were provided with the node adjusting, available travel switch or position transducer replaced displacement transducer.
The also available flow transducer that is installed on the pipeline of displacement transducer 10 in the utility model replaces.
Switched reluctance machines 2 is selected SRD series for use, and electric machine controller 1 is selected SRM series for use.
The utility model can be used for the hydraulic system of various mechanized equipments, on hydraulicdriven servounit, as Transport Machinery, metal forming machinery, metallurgical machinery, forming machine, oil hydraulic press, injection machine, die casting machine, milling train pressurization machinery etc.Can replace using the traditional electrohydraulic servo system of electrohydraulic control, and along with the further developing of switching magnetic-resistance technology, system also can obtain big development at other field.
Claims (8)
1. numerical control hydraulic system of switch reluctance motor pump, it is characterized in that: comprise hydraulic system and reversible continuous speed regulation system, hydraulic system links to each other with reversible continuous speed regulation system.
2. numerical control hydraulic system of switch reluctance motor pump according to claim 1, it is characterized in that: reversible continuous speed regulation system comprises: switched reluctance machines (2), sensor and electric machine controller (1), switched reluctance machines (2) links to each other with hydraulic system, and hydraulic system links to each other with electric machine controller (1) by sensor.
3. numerical control hydraulic system of switch reluctance motor pump according to claim 1 is characterized in that: hydraulic system comprises oil hydraulic pump (3), hydraulic tubing system, oil hydraulic cylinder (8).
4. numerical control hydraulic system of switch reluctance motor pump according to claim 1 is characterized in that: sensor comprises pressure transducer (9), displacement transducer (10).
5. numerical control hydraulic system of switch reluctance motor pump according to claim 2, it is characterized in that: switched reluctance machines (2) links to each other with hydraulic system and is, electric machine controller (1) connects switched reluctance machines (2), switched reluctance machines (2) connects oil hydraulic pump (3), oil hydraulic pump (3) connects oil hydraulic cylinder (8) by the hydraulic tubing system, pressure transducer (9) is set on pipeline (7), displacement transducer (10) is set on fuselage (11), and the output signal of pressure transducer (9) and displacement transducer (11) is connected electric machine controller (1).
6. numerical control hydraulic system of switch reluctance motor pump according to claim 2 is characterized in that: electric machine controller (1) comprises display device (13) and keyboard (14).
7. numerical control hydraulic system of switch reluctance motor pump according to claim 3, it is characterized in that: the hydraulic tubing system, comprise fluid box (4), one-way valve (5), Pilot operated check valve (6) and pipeline (7), the output terminal of the input end of one-way valve (5) and Pilot operated check valve (6) is connected fluid box (4), the input end connecting tube (7) of the output terminal of one-way valve (5) and Pilot operated check valve (6).
8. numerical control hydraulic system of switch reluctance motor pump according to claim 2, it is characterized in that: reversible continuous speed regulation system circuit connection is: the A of switched reluctance machines U2, A ', B, B ', C, C ', the ANG port connects the A of electric machine controller U1 respectively, A ', B, B ', C, C ', the ANG port, the L1 of electric machine controller U1, L2, the L3 port connects power supply, two of pressure transducer U3, displacement transducer U4 connects the AI1 of electric machine controller U1 respectively, AI2, AI3 port, display device U5 and keyboard U6 are connected the I/O1 of electric machine controller U1 respectively, the I/O2 port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201446044U CN201007274Y (en) | 2006-12-11 | 2006-12-31 | Numerical control hydraulic system of switch reluctance motor pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610070669 | 2006-12-11 | ||
| CN200610070669.3 | 2006-12-11 | ||
| CNU2006201446044U CN201007274Y (en) | 2006-12-11 | 2006-12-31 | Numerical control hydraulic system of switch reluctance motor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201007274Y true CN201007274Y (en) | 2008-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201446044U Expired - Fee Related CN201007274Y (en) | 2006-12-11 | 2006-12-31 | Numerical control hydraulic system of switch reluctance motor pump |
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| CN (1) | CN201007274Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632766A (en) * | 2014-12-26 | 2015-05-20 | 成都欧迅海洋工程装备科技有限公司 | Hydraulic cylinder control system for regulating and controlling hydraulic oil flow speed based on movement speed |
| CN107269606A (en) * | 2017-07-24 | 2017-10-20 | 宜兴市宜轻机械有限公司 | A kind of new minute-pressure system |
-
2006
- 2006-12-31 CN CNU2006201446044U patent/CN201007274Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632766A (en) * | 2014-12-26 | 2015-05-20 | 成都欧迅海洋工程装备科技有限公司 | Hydraulic cylinder control system for regulating and controlling hydraulic oil flow speed based on movement speed |
| CN107269606A (en) * | 2017-07-24 | 2017-10-20 | 宜兴市宜轻机械有限公司 | A kind of new minute-pressure system |
| CN107269606B (en) * | 2017-07-24 | 2019-03-12 | 宜兴市宜轻机械有限公司 | A kind of novel minute-pressure system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG KEHUI POWER AUTOMATION CO., LTD. Free format text: FORMER NAME: ZIBO KEHUI ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 255087 Shandong Province, Zibo city Zhangdian District Fang Zhen win Road No. 16 Patentee after: Shandong Kehui Electric Co., Ltd. Address before: 255087 Shandong Province, Zibo city Zhangdian District Fang Zhen win Road No. 16 Patentee before: Kehui Electrics Co., Ltd., Zibo |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |