CN103107652B - Digital coil shaper hydraulic control system - Google Patents
Digital coil shaper hydraulic control system Download PDFInfo
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- CN103107652B CN103107652B CN201310034526.7A CN201310034526A CN103107652B CN 103107652 B CN103107652 B CN 103107652B CN 201310034526 A CN201310034526 A CN 201310034526A CN 103107652 B CN103107652 B CN 103107652B
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- oil
- solenoid directional
- valve
- directional control
- control valve
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Abstract
The invention discloses a kind of digital coil shaper of superhigh precision on a large scale hydraulic control system, comprise oil pump, the upper flowline of oil pump outlet is communicated to the oil-in of a solenoid directional control valve, on the two oil-outs of solenoid directional control valve, oil pipe is communicated to respectively digital coil trimmer oil cylinder upper and lower part, and high and low pressure proportional servo valve parallel with one another accesses on the oil pipe being communicated with oil cylinder bottom by another solenoid directional control valve. The present invention can make HYDRAULIC CONTROL SYSTEM pressure adjustable in 3%-100% scope. Pressure controling precision error setting value ± 0.02MPA. Eliminate the linear dead-time problem of system element, realized system control on a large scale, and improved the control accuracy of whole system.
Description
Technical field
The present invention relates to coil shaper field, be specially a kind of digital coil shaper hydraulic control system.
Background technology
The hydraulic control system of fluid pressure type coil shaper is the main important component part of whole trimmer, and the height of this partial properties has determined the performance of coil shaper just. In the traditional hydraulic control system design of coil shaper in the defect of following common recognition:
1, the hydraulic control system of traditional coil shaper proportioning valve used is linear general, and initial linearity is generally in 15%-20% left and right, and this control range that has just determined whole system is little, and system pressure control accuracy is not high.
2, the hydraulic control system of traditional coil shaper proportioning valve used generally only has one, controls the parameter of whole system by a proportioning valve, and this has also caused system control range little, low precision.
3, the hydraulic control system of traditional coil shaper control element used is common analog quantity control, and the control accuracy of components and parts and corresponding time of control are not high, cause the precision of whole system not high.
Summary of the invention
The object of this invention is to provide a kind of digital coil shaper hydraulic control system, to solve the problem that prior art coil shaper hydraulic control system control range is little, control accuracy is low, control performance is poor.
In order to achieve the above object, the technical solution adopted in the present invention is:
Digital coil shaper hydraulic control system, comprise by motor-driven oil pump, in oil pump outlet, be connected with flowline, it is characterized in that: oil pump outlet line is communicated to the oil-in of a solenoid directional control valve, described solenoid directional control valve has on the two oil-outs of two oil-outs and solenoid directional control valve and is connected with respectively oil pipe, one of them oil pipe of solenoid directional control valve is communicated to digital coil trimmer oil cylinder top, another oil pipe of solenoid directional control valve is communicated to digital coil trimmer oil cylinder bottom, also comprise height parallel with one another, low pressure proportional servo valve, high, after low pressure ratio parallel connection of servo valves, access on the oil pipe being communicated with oil cylinder bottom by another solenoid directional control valve.
Described digital coil shaper hydraulic control system, is characterized in that: adopt digital high frequency servo proportioning valve, electrical control adopts digital servo ratio closed-loop control.
Described digital coil shaper hydraulic control system, is characterized in that: high-precision servo proportioning valve has high-low pressure two covers, controls respectively high-pressure area and area of low pressure pressure.
Described digital coil shaper hydraulic control system, is characterized in that: this hydraulic control system controlled pressure scope is at 3%-100%.
Described digital coil shaper hydraulic control system, is characterized in that: this hydraulic control system controlled pressure error setting value ± 0.02MPA.
Described digital coil shaper hydraulic control system, is characterized in that: on oil pump outlet line, also have access to manual modulation valve parallel with one another, security of system valve.
Described digital coil shaper hydraulic control system, is characterized in that: on the oil pipe being communicated with oil cylinder bottom, also have access to Manual pressure relief valve.
Described digital coil shaper hydraulic control system, is characterized in that: described solenoid directional control valve is two-position four-way solenoid directional control valve.
In the present invention, servo proportion is digital control structure. Electrical control gear provides digital control voltage; Valve core position sensor by servo proportion self band improves spool position signal, forms a closed-loop control system in conjunction with input voltage value. Add its high-speed response frequency, ensured the control high accuracy of system.
In the present invention, high voltage system and low voltage control system by high and low pressure servo proportion Control system resolution, realize the switching between high and low pressure system by two-position four-way solenoid directional control valve respectively. Thereby thoroughly eliminate the linear dead-time problem of system element, realized 3%-100% system control on a large scale, and improved the control accuracy of whole system.
The present invention can make HYDRAULIC CONTROL SYSTEM pressure adjustable in 3%-100% scope. Pressure controling precision error setting value ± 0.02MPA. Eliminate the linear dead-time problem of system element, realized system control on a large scale, and improved the control accuracy of whole system.
Brief description of the drawings
Fig. 1 is system oil-way structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1. digital coil shaper hydraulic control system, comprise the oil pump 2 being driven by motor 1, in oil pump 2 outlets, be connected with flowline, oil pump 2 flowlines are communicated to the oil-in of a solenoid directional control valve 5, solenoid directional control valve 5 has on two oil-outs and 5 pairs of oil-outs of solenoid directional control valve and is connected with respectively oil pipe, solenoid directional control valve 5 one of them oil pipe are communicated to digital coil trimmer oil cylinder 9 tops, solenoid directional control valve 5 another oil pipes are communicated to digital coil trimmer oil cylinder 9 bottoms, also comprise height parallel with one another, low pressure proportional servo valve 8, 7, high, low pressure proportional servo valve 8, 7 rear another solenoid directional control valves 6 that pass through in parallel access on the oil pipe being communicated with oil cylinder 9 bottoms.
On oil pump 2 flowlines, also have access to manual modulation valve parallel with one another 3, security of system valve 4.
On the oil pipe being communicated with oil cylinder bottom, also have access to Manual pressure relief valve 10.
In the present invention, security of system valve 4 control system hydraulic pressure maximum pressures, manual modulation valve 3 is for the operating pressure of operator's manual adjustment system, and the mobile direction of solenoid directional control valve 5 control oil pump 2 hydraulic oil, realizes by changing oil circuit flow direction the direction that change oil cylinder 9 moves.
Solenoid directional control valve 6 is to control being communicated with of high and low pressure proportional servo valve and oil cylinder, the i.e. selection of high-low pressure control. In the time of solenoid directional control valve 6 no power, system is connected high-voltage ratio servo valve 8, realizes the control of system high pressure end. In the time that solenoid directional control valve 6 is switched on, system is connected low pressure proportional servo valve 7, realizes the control of system low-voltage end. Whether energising by solenoid directional control valve 6, realizes the 3%-100% of system pressure, the control of large scale and high accuracy pressure.
Claims (1)
1. digital coil shaper hydraulic control system, comprise by motor-driven oil pump, in oil pump outlet, be connected with flowline, it is characterized in that: oil pump outlet line is communicated to the oil-in of a solenoid directional control valve, described solenoid directional control valve has on the two oil-outs of two oil-outs and solenoid directional control valve and is connected with respectively oil pipe, one of them oil pipe of solenoid directional control valve is communicated to digital coil trimmer oil cylinder top, another oil pipe of solenoid directional control valve is communicated to digital coil trimmer oil cylinder bottom, also comprise height parallel with one another, low pressure proportional servo valve, high, after low pressure ratio parallel connection of servo valves, access on the oil pipe being communicated with oil cylinder bottom by another solenoid directional control valve, adopt digital high frequency servo proportioning valve, electrical control adopts digital servo ratio closed-loop control, high-precision servo proportioning valve has high-low pressure two covers, controls respectively high-pressure area and area of low pressure pressure, this hydraulic control system controlled pressure error setting value ± 0.02MPA, on oil pump outlet line, also have access to manual modulation valve parallel with one another, security of system valve, on the oil pipe being communicated with oil cylinder bottom, also have access to Manual pressure relief valve, described solenoid directional control valve is two-position four-way solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034526.7A CN103107652B (en) | 2013-01-29 | 2013-01-29 | Digital coil shaper hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034526.7A CN103107652B (en) | 2013-01-29 | 2013-01-29 | Digital coil shaper hydraulic control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103107652A CN103107652A (en) | 2013-05-15 |
| CN103107652B true CN103107652B (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310034526.7A Expired - Fee Related CN103107652B (en) | 2013-01-29 | 2013-01-29 | Digital coil shaper hydraulic control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN103107652B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522078B (en) * | 2016-01-11 | 2018-08-03 | 浙江优百特电器有限公司 | The double-deck automatic winding sizing die |
| CN107387471B (en) * | 2017-07-26 | 2018-10-19 | 南京威途真空技术有限公司 | Diffusion in vacuum soldering equipment hydraulic system and its compress control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549371U (en) * | 2009-11-18 | 2010-08-11 | 新疆特变（集团）有限公司 | Hydraulic constant-pressure device used in drying process of transformer coil |
| CN102587443A (en) * | 2012-02-23 | 2012-07-18 | 上海三一重机有限公司 | Multiway valve hydraulic control system of crawler excavator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131806A (en) * | 1980-03-14 | 1981-10-15 | Hitachi Constr Mach Co Ltd | Oil hydraulic circuit for driving oil hydraulic cylinder |
| JP2012097844A (en) * | 2010-11-02 | 2012-05-24 | Sumitomo (Shi) Construction Machinery Co Ltd | Hybrid hydraulic shovel |
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2013
- 2013-01-29 CN CN201310034526.7A patent/CN103107652B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549371U (en) * | 2009-11-18 | 2010-08-11 | 新疆特变（集团）有限公司 | Hydraulic constant-pressure device used in drying process of transformer coil |
| CN102587443A (en) * | 2012-02-23 | 2012-07-18 | 上海三一重机有限公司 | Multiway valve hydraulic control system of crawler excavator |
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| Publication number | Publication date |
|---|---|
| CN103107652A (en) | 2013-05-15 |
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Granted publication date: 20160504 Termination date: 20170129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |