CN202789875U - Control system for hydraulic universal testing machine - Google Patents
Control system for hydraulic universal testing machine Download PDFInfo
- Publication number
- CN202789875U CN202789875U CN 201220449589 CN201220449589U CN202789875U CN 202789875 U CN202789875 U CN 202789875U CN 201220449589 CN201220449589 CN 201220449589 CN 201220449589 U CN201220449589 U CN 201220449589U CN 202789875 U CN202789875 U CN 202789875U
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- China
- Prior art keywords
- control system
- oil pump
- motor
- servo
- digital valve
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- Expired - Lifetime
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- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000002828 fuel tank Substances 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 37
- 230000001276 controlling effect Effects 0.000 description 17
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a control system for a hydraulic universal testing machine, which comprises an oil tank, an oil pump and a digital valve that are connected pairwise, wherein the digital valve is connected with an oil cylinder; the oil pump is connected with a motor driving the oil pump to rotate; the motor is connected with a variable frequency controller driving the motor to rotate; the variable frequency controller is connected with a servo measurement and control box controlling the variable frequency controller; and the servo measurement and control box is connected with a feedback unit feeding back oil cylinder information and connected with the digital valve. The control system is simple in structure, convenient to operate and low in energy consumption, and the automatic operation can be achieved.
Description
Technical field
The utility model relates to a kind of control system, particularly a kind of universal hydraulic testing machine control system.
Background technique
Existing universal hydraulic testing machine control system comprises fuel tank, oil pump and the digital valve that connects in twos, digital valve connects oil cylinder, this control system is controlled the flow of liquid by regulating digital valve, the flow of regulating in advance oil pump is definite value, by regulating the size of digital valve flow, reach the hydraulic pressure that oil cylinder needs, when fluid flow is too much, enter in the fuel tank by regulating digital valve, reclaiming, this mode control response is slow, and energy consumption is large.
The model utility content
The technical problems to be solved in the utility model provides a kind of simple in structure, easy to operate, and it is low to consume energy, and can realize the universal hydraulic testing machine control system of automation.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of universal hydraulic testing machine control system, comprise the fuel tank that connects in twos, oil pump and digital valve, fuel tank, oil pump and digital valve connect by pipe, digital valve connects oil cylinder, oil cylinder is connected by pipe with digital valve, described oil pump is connected with and drives the motor that oil pump rotates, motor is connected by flange and coupling with oil pump, motor is connected with the frequency-variable controller that drive motor rotates, frequency-variable controller is connected with the servo observing and controlling case of control frequency-variable controller, servo observing and controlling case is connected with the feedback unit of feedback oil cylinder information, and servo observing and controlling case also is connected with digital valve.
Further, described feedback unit comprises power sensor, displacement transducer and disformation sensor, and power sensor, displacement transducer and disformation sensor are connected with servo observing and controlling case respectively, and the information of oil cylinder is fed back to servo observing and controlling case.
Further, described motor is speed-adjustable motor.
Further, described oil pump is metering pump.
Adopt the universal hydraulic testing machine control system of technique scheme, because hydraulic oil is linked into oil cylinder by the control of digital valve, described oil pump is connected with and drives the motor that oil pump rotates, motor is connected with the frequency-variable controller that drive motor rotates, frequency-variable controller is connected with the servo observing and controlling case of control frequency-variable controller, servo observing and controlling case is connected with the feedback unit of feedback oil cylinder information, servo observing and controlling case also is connected with digital valve, so by servo observing and controlling case control frequency-variable controller, frequency-variable controller control motor, the rotating speed of indirectly control oil pump, thus control to the uninterrupted of wanting, realize automation mechanized operation.Because described feedback unit comprises power sensor, displacement transducer and disformation sensor, power sensor, displacement transducer and disformation sensor are connected with servo observing and controlling case respectively, so that oil cylinder feeds back to the information of servo observing and controlling case is comprehensive.
Description of drawings
Fig. 1 is the structural representation of the utility model universal hydraulic testing machine control system.
Embodiment
As shown in Figure 1, a kind of universal hydraulic testing machine control system, comprise the fuel tank 1 that connects in twos, oil pump 2 and digital valve 3, fuel tank 1, oil pump 2 and digital valve 3 can connect by pipe, digital valve 3 connects oil cylinder 4, oil cylinder 4 can be connected by pipe with digital valve 3, oil pump 2 is connected with and drives the motor 5 that oil pump 2 rotates, motor 5 can be connected by gear or belt with oil pump 2, motor 5 is connected with the frequency-variable controller 6 that drive motor 5 rotates, frequency-variable controller 6 is connected with the servo observing and controlling case 7 of control frequency-variable controller 6, servo observing and controlling case 7 is connected with the feedback unit of feedback oil cylinder 4 information, servo observing and controlling case 7 also is connected with digital valve 3, feedback unit comprises power sensor 8, displacement transducer 9 and disformation sensor 10, power sensor 8, displacement transducer 9 and disformation sensor 10 are connected with servo observing and controlling case 7 respectively, and the information of oil cylinder 4 is fed back to servo observing and controlling case 7, motor 5 is speed-adjustable motor, and oil pump 2 is metering pump.
The utility model universal hydraulic testing machine control system, by servo observing and controlling case 7 control frequency-variable controllers 6, the rotating speed of frequency-variable controller 6 control control motors 5, thereby the rotating speed of indirectly control oil pump 2, therefrom can draw the flow of oil pump 2, flow through the hydraulic oil that comes from fuel tank 1, the dual regulation of the digital valve of flowing through 3 arrives in the oil cylinder 4; The adjusting of stable operation mainly realizes by the adjusting to oil hydraulic pump, and response then mainly realizes by the adjusting of fast digital valve 3 fast; The hydraulic pressure that needs in the oil cylinder 4 during namely stable operation, by the rotating speed of frequency-variable controller 6 self-regulation motors 5, the rotating speed of indirect regulation oil pump 2, thus reach flow and the pressure of wanting, the liquid of digital valve 3 backflow oil dropping apparatuses 1 just greatly reduces, and has therefore also realized energy-conservation.
Claims (4)
1. universal hydraulic testing machine control system, comprise the fuel tank, oil pump and the digital valve that connect in twos, digital valve connects oil cylinder, it is characterized in that: described oil pump is connected with and drives the motor that oil pump rotates, motor is connected with the frequency-variable controller that drive motor rotates, frequency-variable controller is connected with the servo observing and controlling case of control frequency-variable controller, and servo observing and controlling case is connected with the feedback unit of feedback oil cylinder information, and servo observing and controlling case also is connected with digital valve.
2. universal hydraulic testing machine control system according to claim 1, it is characterized in that: described feedback unit comprises power sensor, displacement transducer and disformation sensor, and power sensor, displacement transducer and disformation sensor are connected with servo observing and controlling case respectively.
3. universal hydraulic testing machine control system according to claim 2, it is characterized in that: described motor is speed-adjustable motor.
4. universal hydraulic testing machine control system according to claim 3, it is characterized in that: described oil pump is metering pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449589 CN202789875U (en) | 2012-09-03 | 2012-09-03 | Control system for hydraulic universal testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449589 CN202789875U (en) | 2012-09-03 | 2012-09-03 | Control system for hydraulic universal testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789875U true CN202789875U (en) | 2013-03-13 |
Family
ID=47817141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220449589 Expired - Lifetime CN202789875U (en) | 2012-09-03 | 2012-09-03 | Control system for hydraulic universal testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789875U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603847A (en) * | 2013-11-21 | 2014-02-26 | 广西玉柴专用汽车有限公司 | Hydraulic control device |
| 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 |
| CN108167245A (en) * | 2018-03-02 | 2018-06-15 | 苏州铁马自动化科技有限公司 | It is a kind of to utilize servo motor and the hydraulic servo control system of digital valve |
-
2012
- 2012-09-03 CN CN 201220449589 patent/CN202789875U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603847A (en) * | 2013-11-21 | 2014-02-26 | 广西玉柴专用汽车有限公司 | Hydraulic control device |
| 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 |
| CN108167245A (en) * | 2018-03-02 | 2018-06-15 | 苏州铁马自动化科技有限公司 | It is a kind of to utilize servo motor and the hydraulic servo control system of digital valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent of Hangzhou Xin Hi Tech Co.,Ltd. The person in charge Document name: Notice of Expiration and Termination of Patent Right |