CN205977915U - Mixed servo of electricity liquid - Google Patents
Mixed servo of electricity liquid Download PDFInfo
- Publication number
- CN205977915U CN205977915U CN201620653312.7U CN201620653312U CN205977915U CN 205977915 U CN205977915 U CN 205977915U CN 201620653312 U CN201620653312 U CN 201620653312U CN 205977915 U CN205977915 U CN 205977915U
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- hydraulic
- leading screw
- oil
- push rod
- electro
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Abstract
The utility model relates to a mixed servo of electricity liquid, include: carry out the push rod hydro -cylinder unit of appointed action, it is right action and moment of torsion real -time detection's the automatically controlled unit of push rod hydro -cylinder unit, it is right oil pressure and the oil circuit of push rod hydro -cylinder unit the liquid accuse unit controlled carries out, still including detection information who acquires automatically controlled unit and the controller that sends control command according to preset program to liquid accuse unit. The utility model discloses a mixed servo of electricity liquid has combined the advantage of servo motor's precision advantage and hydraulic system's high capacity driving force, compare with traditional electric servo push rod and have bigger driving force, compare with hydraulic servo control system and have lower cost and lower maintenance cost.
Description
Technical field
This utility model is related to electrohydraulic servo system field, more particularly, to a kind of electronic mode and hydraulic way co- controlling
Servosystem.
Background technology
At present, in hydraulic test, hydraulic cylinder using most commonly seen, hydraulic cylinder is that hydraulic energy is changed into mechanical energy
, do straight reciprocating motion（Or oscillating motion）Hydraulic actuator.During use, if work can accurately be controlled in real time
The travel position of plug, by extension effect certain for the use function generation to hydraulic cylinder.
Thus, it is necessary to provide a kind of hydraulic cylinder, can accurately control the travel position of piston, the function of extension cylinder pressure in real time
Effect, to overcome above-mentioned technological deficiency.
China Patent Publication No.：202985213U, discloses a kind of oil cylinder speed feed screw, to solve silk in prior art
Inaccurate problem is positioned after thick stick palikinesia；Oil cylinder speed feed screw in this programme, including the leading screw being connected with oil cylinder, leading screw
Be provided be fed with leading screw respectively spacing, oil pressure fast move back spacing corresponding leading screw feed limitation travel switch, oil pressure speed move back spacing
Travel switch, oil pressure speed is sent spacing, leading screw to retreat the spacing oil pressure speed that is correspondingly provided with respectively to send limitation travel switch, leading screw to retreat limit
Position travel switch.
In technique scheme, by detecting to the stroke of leading screw and oil cylinder, position, to solve leading screw and to repeat to determine
The inaccurate problem in position, remains the feedback to whole fluid path by the mechanical parameter information realization detecting the element on oil circuit, should
Plant detection mode precision poor；The mixing of automatically controlled mode and hydraulic control mode is not controlled and improve, control accuracy is only by inspection
The order of accuarcy surveyed is ensureing.
In view of drawbacks described above, this utility model creator passes through long research and practice obtains this creation finally.
Content of the invention
The purpose of this utility model is to provide a kind of electro-hydraulic mixing servosystem, in order to overcome above-mentioned technological deficiency.
For achieving the above object, this utility model provides a kind of electro-hydraulic mixing servosystem, including：
The push rod oil cylinder unit of execution required movement；
Action to described push rod oil cylinder unit and the ECU of moment of torsion real-time detection；
The hydraulic control unit that oil pressure to described push rod oil cylinder unit and oil circuit are controlled；
Also include the control obtaining the detection information of ECU and according to pre-set programs, hydraulic control unit being sent with control instruction
Device processed.
Further, the feed screw nut that described push rod oil cylinder unit includes leading screw, is arranged on leading screw, is connected with leading screw
Hollow ram；
Also include the piston being connected with feed screw nut；
Described leading screw passes through feed screw nut and piston, drives feed screw nut to move together with piston.
Further, described push rod oil cylinder unit also includes cylinder body, and described piston, hollow ram and leading screw are arranged on
In cylinder body；
It is respectively provided with the first hydraulic fluid port and the second hydraulic fluid port in the upper and lower side of described cylinder body, two hydraulic fluid ports can realize oil-feed
With fuel-displaced.
Further, described hydraulic control unit includes fuel tank, oil pump and the oil circuit being connected providing hydraulic oil；
Also include the pressure-regulating valve that oil circuit oil pressure is adjusted and the reversal valve changing hydraulic oil flow direction in oil circuit.
Further, described ECU include obtaining in real time servomotor moment of torsion and control servomotor speed and
The motor servo driver of displacement, described motor servo driver transmits the torque information of acquisition to controller, described
Controller speed, displacement information are back in motor servo driver.
Further, described ECU also includes being arranged in hollow ram and its kinestate is detected
Sensor.
Further, described push rod oil cylinder unit also includes housing, is provided with and is connected with leading screw in described housing
And drive the drive mechanism of leading screw rotation；
The upper surface of described housing is connected with the sealed end of cylinder body.
Further, the second black box of leading screw is set in described second oil port, described the second black box
Lower end is contacted with housing；
Described leading screw sequentially passes through driven pulley, leading screw support base and the second black box at this end.
Further, described drive mechanism is connected with drive mechanism, and described drive mechanism includes servomotor, described
The outfan of servomotor be connected with reductor.
Compared with prior art the beneficial effects of the utility model are：Electric control part as the part of information gathering, due to
Higher to the accuracy of detection of servomotor, compared to the element in detection fluid path, accuracy of detection and control accuracy are high；Meanwhile, liquid
As reactive end, the information according to electric control part detection and the default parameter of controller are controlled control unit to oil circuit, and then,
Control the action of leading screw and hollow ram.Realize the precisely automatically controlled mixing with high capacity hydraulic pressure to control, load is big, control accuracy
High.
Electro-hydraulic mixing servosystem of the present utility model passes through the positional precision of Serve Motor Control hollow ram, by oil
Pressure system provides main power output.This kind of system combines the precision advantage of servomotor and the high capacity driving energy of hydraulic system
The advantage of power.Compared with traditional electrical servo push rod, there is bigger driving force, have relatively compared with Hydrauservo System
Low cost and relatively low maintenance cost.
Because the precision of electro-hydraulic mixing servosystem is mainly by Serve Motor Control, therefore will to the precision of pressure-regulating valve
Ask not high, can carry out transforming with traditional Manual pressure regulating valve and can reach use requirement.
Brief description
Fig. 1 is the functional block diagram of the electro-hydraulic mixing servo push-rod control system of this utility model embodiment；
Fig. 2 is the overall structure diagram of the electro-hydraulic mixing servo push-rod control system of this utility model embodiment；
Fig. 3 is the cross section structure diagram of the electro-hydraulic mixing servo push-rod control system of this utility model embodiment；
Fig. 4 is the functional block diagram of the electro-hydraulic mixing servo push-rod control system of this utility model embodiment.
Specific embodiment
Below in conjunction with accompanying drawing, the above-mentioned He other technical characteristic of this utility model and advantage are described in more detail.
Refer to shown in Fig. 1, it is the functional block of the electro-hydraulic mixing servo push-rod control system of this utility model embodiment
Figure, the push rod oil cylinder unit of execution required movement；Action to described push rod oil cylinder unit and moment of torsion real-time detection automatically controlled
Unit；The hydraulic control unit that oil pressure to described push rod oil cylinder unit and oil circuit are controlled；Also include obtaining ECU
Detection information and according to pre-set programs to hydraulic control unit send control instruction controller.
Incorporated by reference to shown in Fig. 2,3, in this utility model embodiment, ECU controls drive mechanism 1, drive mechanism 2
Torque is applied to push rod oil cylinder unit 3.Described drive mechanism 1 includes servomotor 11 and reductor 12, and described servo is electric
The outfan of machine 11 is connected with reductor 12.Described drive mechanism 2 includes the main belt being connected with the output shaft of reductor 12
Wheel 13 and driven pulley 15, described driving pulley 13 is connected with driven pulley 15 by belt.
Described push rod oil cylinder unit 3 includes the leading screw 31 being connected with drive mechanism 2, in the present embodiment, leading screw 31
One end is connected with driven pulley 15, and under the drive of driven pulley 15, leading screw 31 moves described leading screw 31 according to default rotating speed
Make.
Described drive mechanism 2 is arranged in housing 14, and it is protected, and prevents dust pollution from bringing rotation error.
Leading screw end in housing 14 is provided with leading screw support base 16, and leading screw support base 16 is provided with bearing.Setting housing 14, both protected
The normal operation of shield drive mechanism additionally it is possible to play the effect supporting and positioning to leading screw.
In this utility model embodiment, drive mechanism 1 and push rod oil cylinder unit 3 are arranged on the same side of housing 14,
Compact conformation, saves space.
Described push rod oil cylinder unit 3 also includes the feed screw nut 32 being arranged on leading screw 31, and described leading screw 31 passes through
Feed screw nut 32, and be connected with hollow ram 35 in the one end away from drive mechanism；The top of described feed screw nut 32 connects
There is piston 33.Feed screw nut 32 is fixedly connected with piston 33, when leading screw rotates, because feed screw nut 32 can not rotate, leading screw
Relatively rotate between 31 and feed screw nut 32, feed screw nut 32 promotes hollow ram 35 to stretch out.
In the present embodiment, feed screw nut 32 is overall with piston 33 to be equivalent to piston, when leading screw 31 rotates, promotes piston to move
Dynamic；The external part of hollow ram connects load, completes the action to load.
Described piston 33 and the junction of feed screw nut 32 are provided with the first black box 34.
In the present embodiment, piston 33, hollow ram 35 and leading screw 31 are arranged in cylinder body 37, in the upper and lower side of cylinder body 37
It is respectively provided with the first hydraulic fluid port 36 and the second hydraulic fluid port 18, two hydraulic fluid ports can realize oil-feed and fuel-displaced.
The described sealed end of cylinder body 37 is contacted with housing 14, and housing 14 plays the effect of sealing；At the second hydraulic fluid port 18
The second black box 17 that leading screw 31 is sealed is set, and described the second black box 17 lower end is contacted with housing 14.Silk
Thick stick 31 sequentially passes through driven pulley 15, leading screw support base 16 and the second black box 17 in the sealed end of cylinder body 37.
In the upper end of the first described hydraulic fluid port 36, the outside of the hollow ram 35 inside oil cylinder arranges the 3rd black box
38.
Under the driving of servomotor, leading screw 31 promotes hollow ram 35 mobile, and by the oil-feed of first, second hydraulic fluid port
With fuel-displaced, realize the default oil pressure of oil cylinder and oil piping system.
Described hydraulic control unit includes fuel tank, oil pump and the oil circuit being connected providing hydraulic oil, also includes to oil circuit
The pressure-regulating valve that oil pressure is adjusted and the reversal valve changing hydraulic oil flow direction in oil circuit.
Described oil pump, pressure-regulating valve and reversal valve are electrically connected with the controller, and are controlled by the controller, according to controller
Instruction action.
Described ECU includes obtaining in real time the moment of torsion of servomotor 11 and controls servomotor speed and displacement
Motor servo driver, described motor servo driver transmits the torque information of acquisition to controller, described control
Speed, displacement information are back in motor servo driver device.Described servomotor 11 is also associated with encoder, right
Motor is controlled.
Described ECU also includes the sensor being arranged in hollow ram 35 and its kinestate being detected,
It is grating scale or linear transducer in the present embodiment, the movable information of detection hollow ram, and transmits to controller, by controlling
Device processed is judged.
In this utility model, controller is host computer, and it obtains the movable information of hollow ram 35 and servo simultaneously
The torque information of motor, and control pressure regulating valve and reversal valve according to the torque information of servomotor adjust oil circuit pressure and
Flow direction.
In this utility model, electric control part as the part of information gathering, due to the accuracy of detection of servomotor relatively
Height, compared to the element in detection fluid path, accuracy of detection and control accuracy are high；Meanwhile, hydraulic control unit is as reactive end, according to electricity
The information of control part detection and the default parameter of controller are controlled to oil circuit, and then, control leading screw and hollow ram
Action.Realize the precisely automatically controlled mixing with high capacity hydraulic pressure to control, load is big, and control accuracy is high.
The specific work process of this utility model embodiment is as follows;
When controller receives the signal stretching out hollow ram, start Hydraulic Station, electric pressure-regulating valve is by the pressure in oil circuit
It is adjusted to initial value（Initial value is less, and generally zero）, afterwards controller send order to reversal valve, after reversal valve obtains order
Action, makes the second hydraulic fluid port fuel-displaced, the first hydraulic fluid port oil-feed, controls servomotor rotation afterwards, and servomotor passes through Timing Belt system
Drive leading screw rotation, because feed screw nut can not rotate, relatively rotate between leading screw and feed screw nut, feed screw nut promotes
Hollow ram is stretched out.
The meanwhile moment of torsion being exported of servo controller real-time monitoring servomotor, when the output torque of servomotor
When exceeding its rated output moment of torsion, electric pressure-regulating valve increases the oil pressure in oil piping system, until the output torque of servomotor is low
Nominal torque in servomotor（Now the oil pressure in oil piping system is P1）.
When hollow ram reaches specified location, servomotor stops operating, and motor shaft embraced by servomotor band-type brake.Now
When controller is connected to the order of retraction push rod, controller controls servomotor to rotate backward, and detection servomotor is defeated simultaneously
Go out moment of torsion, when the output torque of motor is more than nominal load, the oil pressure in electric pressure-regulating valve regulation oil circuit is until servomotor
Output torque reach rated value below.
When hollow pusher retracted is to specified location, servomotor stops operating.When pusher retracted, reversal valve moves
Make, the second hydraulic fluid port oil-feed now, the oil that the first hydraulic fluid port flows out enters fuel tank by overflow valve.
Above-mentioned detailed description is illustrating for one of them possible embodiments of this utility model, and this embodiment is not
In order to limit the scope of the claims of the present utility model, all equivalence enforcements done without departing from this utility model or change, all should comprise
In the range of technical solutions of the utility model.
Claims (9)
1. a kind of electro-hydraulic mixing servosystem is it is characterised in that include：
The push rod oil cylinder unit of execution required movement；
Action to described push rod oil cylinder unit and the ECU of moment of torsion real-time detection；
The hydraulic control unit that oil pressure to described push rod oil cylinder unit and oil circuit are controlled；
Also include the controller obtaining the detection information of ECU and according to pre-set programs, hydraulic control unit being sent with control instruction.
2. electro-hydraulic mixing servosystem according to claim 1 is it is characterised in that described push rod oil cylinder unit includes silk
Thick stick, the feed screw nut being arranged on leading screw, the hollow ram being connected with leading screw；
Also include the piston being connected with feed screw nut；
Described leading screw passes through feed screw nut and piston.
3. electro-hydraulic mixing servosystem according to claim 2 is it is characterised in that described push rod oil cylinder unit also includes
Cylinder body, described piston, hollow ram and leading screw are arranged in cylinder body；
It is respectively provided with the first hydraulic fluid port and the second hydraulic fluid port in the upper and lower side of described cylinder body.
4. electro-hydraulic mixing servosystem according to claim 1 and 2 is it is characterised in that described hydraulic control unit includes carrying
For the fuel tank of hydraulic oil, oil pump and the oil circuit being connected；
Also include the pressure-regulating valve that oil circuit oil pressure is adjusted and the reversal valve changing hydraulic oil flow direction in oil circuit.
5. electro-hydraulic mixing servosystem according to claim 1 is it is characterised in that described ECU includes obtaining in real time
Take the moment of torsion of servomotor and control the motor servo driver of servomotor speed and displacement.
6. electro-hydraulic mixing servosystem according to claim 5 is it is characterised in that described ECU also includes arranging
The sensor being detected in hollow ram and to its kinestate.
7. electro-hydraulic mixing servosystem according to claim 1 is it is characterised in that described push rod oil cylinder unit also includes
Housing, is provided with the drive mechanism being connected with leading screw and driving leading screw to rotate in described housing；
The upper surface of described housing is connected with the sealed end of cylinder body.
8. electro-hydraulic mixing servosystem according to claim 3 is it is characterised in that arrange silk in the second described oil port
Second black box of thick stick, the second described black box lower end is contacted with housing；
Described leading screw sequentially passes through driven pulley, leading screw support base and the second black box at this end.
9. electro-hydraulic mixing servosystem according to claim 7 is it is characterised in that described drive mechanism and drive mechanism
Connect, described drive mechanism includes servomotor, and the outfan of described servomotor is connected with reductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653312.7U CN205977915U (en) | 2016-06-28 | 2016-06-28 | Mixed servo of electricity liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653312.7U CN205977915U (en) | 2016-06-28 | 2016-06-28 | Mixed servo of electricity liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977915U true CN205977915U (en) | 2017-02-22 |
Family
ID=58022333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620653312.7U Expired - Fee Related CN205977915U (en) | 2016-06-28 | 2016-06-28 | Mixed servo of electricity liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977915U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909624A (en) * | 2016-06-28 | 2016-08-31 | 河北工业大学 | Electro-hydraulic hybrid servo system |
| CN108631497A (en) * | 2018-05-21 | 2018-10-09 | 芜湖优能自动化设备有限公司 | A kind of pressure valve pressure regulation servo motor tooling |
| CN109281876A (en) * | 2018-11-30 | 2019-01-29 | 博纳斯威阀门股份有限公司 | A kind of wind light mutual complementing electrohydraulic actuator |
-
2016
- 2016-06-28 CN CN201620653312.7U patent/CN205977915U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909624A (en) * | 2016-06-28 | 2016-08-31 | 河北工业大学 | Electro-hydraulic hybrid servo system |
| CN105909624B (en) * | 2016-06-28 | 2017-12-05 | 河北工业大学 | A kind of electro-hydraulic mixing servo-drive system |
| CN108631497A (en) * | 2018-05-21 | 2018-10-09 | 芜湖优能自动化设备有限公司 | A kind of pressure valve pressure regulation servo motor tooling |
| CN109281876A (en) * | 2018-11-30 | 2019-01-29 | 博纳斯威阀门股份有限公司 | A kind of wind light mutual complementing electrohydraulic actuator |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20170628 |