CN101644284B - Synchronous driving device - Google Patents
Synchronous driving device Download PDFInfo
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- CN101644284B CN101644284B CN2009101020798A CN200910102079A CN101644284B CN 101644284 B CN101644284 B CN 101644284B CN 2009101020798 A CN2009101020798 A CN 2009101020798A CN 200910102079 A CN200910102079 A CN 200910102079A CN 101644284 B CN101644284 B CN 101644284B
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Abstract
The invention relates to a synchronous driving device. The existing devices feature low control accuracy and poor synchronization performance. The device comprises a rack. A loading stage is arranged at the top of the rack. Guide wheels are symmetrically installed at both sides of the rack. The rear end face of the rack is provided with an earring coupling which is connected with the earring in a movable way. The earring is fixed with one end of a piston rod and the other end of the piston rod is fixed with a piston. A displacement sensor of a hydraulic cylinder is in sliding fit with the piston and the piston rod. The hydraulic cylinder is divided into a cavity without a rod and a cavity with a rod by the piston. Oil feed circuits and oil return circuits of electro-hydraulic proportional valves are connected with an oil tank. Valve plugs of the electro-hydraulic proportional valves are provided with displacement sensors of the valve plugs. Sensors are connected with the input end of a control unit by signals. After the output signals of the control unit and the disturbance signals of the disturbance signal loader are synthesized by the signal synthesizer and amplified by the signal amplifier, the output signals are respectively loaded into two electro-hydraulic proportional valves. The device improves the synchronous driving accuracy and can better guide the synchronous driving systems to be applied in the actual engineering field.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of synchronous drive device, be used for studying the influence of multi-hydraulic-cylinder synchronous driving system different driving mechanism and controlling method the synchronous drive precision.
Background technique
The multi-hydraulic-cylinder synchronized drive technology, adjust as the quick position of self-propelled gun, the press down system of high-accuracy numerical control machine tool supplying position control and milling train etc., core technology and key configuration in the great often dynamoelectric equipment, because of each passage in the synchronous driving process and each interchannel performance unusual fluctuation factor numerous and diverse, difficult quilt detects in real time and compensates, it is the difficult point during electromechanical control realizes always, how to explore synchronous drive mechanism, coherence between control strategy design and the synchronous drive precision, more effectively improving synchronous drive efficient (speed and precision) is one of problem anxious to be solved in the electromechanical control industry.
Synchronous drive mechanism design and the design of synchronization control strategy in the multi-hydraulic-cylinder synchronous drive can be referred to as the design of synchronous drive pattern again; The synchronous drive precision then comprises synchronous drive speed and the isoparametric dynamic and static tracking accuracy of displacement.Coherence between multi-hydraulic-cylinder synchronous drive pattern and the synchronous drive precision is described owing to can be subjected to factor affecting such as mechanism design diversity, load disturbance and coupling, valve-controlled cylinder electrohydraulic servo system essentially nonlinear, is difficult to provide corresponding specific descriptions in theory.Simultaneously, in the engineering practical application owing to be subjected to system's security of operation, the influence of factors such as reliability, can only provide a kind of solution preferably based on practical operation situation, can not provide certain synchronization drive pattern and the concrete qualitative and quantitative description that drives the precision coherence, it was 15m to span once that the people is for example arranged, the twin-tub of load 5t drives hydraulic pressure driving carrying out experiment, if the dynamic synchronization of will driving a vehicle Displacement error is reduced to 5mm by 10mm, its motion speed can improve 200mm/s by 100mm/s, yet but can't provide the combination that the optimum that can reach drives precision and drive pattern.Therefore, the coherence of design of synchronous drive pattern and driving precision has important theory value and practical significance in the research multi-hydraulic-cylinder synchronous drive.
Summary of the invention
Purpose of the present invention just provides a kind of device that is used to study the multi-hydraulic-cylinder synchronous driving performance.
The present invention solves the problems of the technologies described above the technological scheme that is adopted to be:
Synchronous drive device comprises frame, load loading bench, guide rail, upper saw pulley, piston rod, oil hydraulic cylinder, electro-hydraulic proportional valve, fuel tank.The load loading bench is arranged on the top of frame, and the dual-side symmetry of frame is equipped with upper saw pulley, and upper saw pulley rolls with guide rail and cooperates; The ear end face of frame is provided with the earrings catcher that the cross section is a concave shape, and the earrings catcher flexibly connects by bearing pin with an end of earrings; The other end of earrings and piston rod one end fixedly install, and piston rod is parallel with guide rail; The other end of piston rod passes end face of oil hydraulic cylinder damping loader, oil hydraulic cylinder and the piston in the oil hydraulic cylinder fixedly installs, and the oil hydraulic cylinder displacement transducer passes another end face of oil hydraulic cylinder and piston and piston rod and is slidingly matched; Piston is divided into rodless cavity and rod chamber with oil hydraulic cylinder, and rodless cavity is connected with electro-hydraulic proportional valve by pipeline respectively with rod chamber, and the pipeline between rodless cavity and the electro-hydraulic proportional valve is provided with pressure transducer and flow transducer; The oil supply loop of electro-hydraulic proportional valve and oil return loop and fuel tank join, and oil supply loop is provided with Oil pump electrical machinery group and fluid filter.The spool of electro-hydraulic proportional valve is provided with valve core displacement sensor, valve core displacement sensor, oil hydraulic cylinder displacement transducer, pressure transducer and flow transducer are connected with the input end signal of control unit, the output terminal of control unit, disturbing signal loader and signal amplifier are connected with signal synthesizer, the disturbing signal of the output signal of control unit and disturbing signal loader is synthetic through signal synthesizer, and the output signal after signal amplifier amplifies is loaded on electro-hydraulic proportional valve.
Beneficial effect of the present invention: can be used for the modeling and simulation research of multi-hydraulic-cylinder synchronous drive mechanism, control strategy design and driving precision coherence, describe multi-hydraulic-cylinder synchronous drive pattern in detail to driving the influence of precision, to tackle and to instruct of the efficient and rational application of multi-hydraulic-cylinder synchronous driving system in actual engineering field.
Description of drawings
Fig. 1 is an embodiment of the present invention structural representation;
Fig. 2 is the control structure schematic representation of electro-hydraulic proportional valve and oil hydraulic cylinder part;
Fig. 3 is an another kind of example structure schematic representation of the present invention.
Embodiment
Embodiment 1:
As depicted in figs. 1 and 2, synchronous drive device comprises frame 1, load loading bench 2, guide rail 11, upper saw pulley 12, piston rod 5, oil hydraulic cylinder 6, electro-hydraulic proportional valve 7, fuel tank 10.Load loading bench 2 is arranged on the top of frame 1, and the dual-side symmetry of frame 1 is equipped with upper saw pulley 12, and upper saw pulley 12 rolls with guide rail 11 and cooperates; The earrings catcher 3 that it is concave shape that the ear end face of frame 1 is provided with a cross section, earrings catcher 3 flexibly connects by bearing pin with an end of earrings 4; The other end of earrings 4 and piston rod 5 one ends fixedly install, and piston rod 5 is parallel with guide rail 11; The other end of piston rod 5 passes end face of oil hydraulic cylinder damping loader 17, oil hydraulic cylinder 6 and the piston 19 in the oil hydraulic cylinder 6 fixedly installs, and oil hydraulic cylinder displacement transducer 21 passes another end face of oil hydraulic cylinder 6 and piston 19 and piston rod 5 and is slidingly matched; Piston 19 is divided into rodless cavity 20 and rod chamber 18 with oil hydraulic cylinder 6, and rodless cavity 20 is connected with electro-hydraulic proportional valve 7 by pipeline respectively with rod chamber 18, and the pipeline between rodless cavity 20 and the electro-hydraulic proportional valve 7 is provided with pressure transducer 22 and flow transducer 23; The oil supply loop of electro-hydraulic proportional valve 7 and oil return loop and fuel tank 10 join, and oil supply loop is provided with Oil pump electrical machinery group 8 and fluid filter 9.The spool of electro-hydraulic proportional valve 7 is provided with valve core displacement sensor 24, valve core displacement sensor 24, oil hydraulic cylinder displacement transducer 21, pressure transducer 22 and the input end signal of flow transducer 23 with control unit 13 are connected, the output terminal of control unit 13, disturbing signal loader 15 and signal amplifier 16 are connected with signal synthesizer 14, the disturbing signal of the output signal of control unit 13 and disturbing signal loader 15 is synthetic through signal synthesizer 14, and the output signal after signal amplifier 16 amplifies is loaded on electro-hydraulic proportional valve 7.
Concrete working procedure of the embodiment 1: start the Oil pump electrical machinery group, control unit is by the control electro-hydraulic proportional valve frame that advances or pull back, in this process, gather the data comparison that the signal of pressure transducer, flow transducer, valve core displacement sensor, oil hydraulic cylinder displacement transducer obtains being correlated with respectively, thus optimized Control Mode.This device can also be by the synchronous drive experiment under the disturbed situation of disturbing signal loader simulation spool control signal; Test by the synchronous drive under the inconsistent situation of oil hydraulic cylinder damping loader simulated solution cylinder pressure damping.
Embodiment 2:
As shown in Figure 3, synchronous drive device comprises frame 1, load loading bench 2, guide rail 11, upper saw pulley 12, earrings catcher 3, earrings 4, piston rod 5, oil hydraulic cylinder 6, electro-hydraulic proportional valve 7, Oil pump electrical machinery group 8, fluid filter 9, fuel tank 10.Load loading bench 2 is arranged on frame 1 top, and the corresponding guide rail 11 place's symmetries in the both sides of frame 1 are equipped with upper saw pulley 12, and upper saw pulley 12 rolls with guide rail 11 and cooperates; The ear end face two ends of frame 1 are symmetrical arranged the cross section and are concave shape earrings catcher 3, and earrings catcher 3 flexibly connects by bearing pin with an end of earrings 4; The other end of earrings 4 passes end face of oil hydraulic cylinder damping loader, oil hydraulic cylinder and the piston in the oil hydraulic cylinder fixedly installs, and the oil hydraulic cylinder displacement transducer passes another end face of oil hydraulic cylinder and piston and piston rod and is slidingly matched; Piston is divided into rodless cavity and rod chamber with oil hydraulic cylinder, and rodless cavity is connected with electro-hydraulic proportional valve by pipeline respectively with rod chamber, and the pipeline between rodless cavity and the electro-hydraulic proportional valve is provided with pressure transducer and flow transducer; Join by Oil pump electrical machinery group, fluid filter and fuel tank after the oil supply loop parallel connection of two electro-hydraulic proportional valves, the oil return loop of each electro-hydraulic proportional valve directly and fuel tank join.The spool of each electro-hydraulic proportional valve is provided with valve core displacement sensor, valve core displacement sensor, oil hydraulic cylinder displacement transducer, pressure transducer and flow transducer are connected with the input end signal of control unit, the output terminal of control unit, disturbing signal loader and signal amplifier are connected with signal synthesizer, the disturbing signal of the output signal of control unit and disturbing signal loader is synthetic through signal synthesizer, and the output signal after signal amplifier amplifies is respectively loaded on two electro-hydraulic proportional valves.
Concrete working procedure of the embodiment 2: start the Oil pump electrical machinery group, control unit is controlled two electro-hydraulic proportional valves frame that advances or pull back respectively, in this process, gather the data comparison that the signal of each pressure transducer, flow transducer, valve core displacement sensor, oil hydraulic cylinder displacement transducer obtains being correlated with respectively, and can take different control strategies by two electro-hydraulic proportional valves, thereby obtain the optimal control pattern under special parameter.This device can also be by the synchronous drive experiment under the disturbed situation of disturbing signal loader simulation spool control signal; Test by the synchronous drive under the inconsistent situation of oil hydraulic cylinder damping loader simulated solution cylinder pressure damping.By the synchronous drive experiment under the asymmetric situation of load loading bench simulation Driven by Hydraulic Cylinder load.
Claims (1)
1. synchronous drive device, comprise frame, load loading bench, guide rail, upper saw pulley, piston rod, oil hydraulic cylinder, electro-hydraulic proportional valve, fuel tank, it is characterized in that: the load loading bench is arranged on the top of frame, and the dual-side symmetry of frame is equipped with upper saw pulley, and upper saw pulley rolls with guide rail and cooperates; The ear end face of frame is provided with the earrings catcher that the cross section is a concave shape, and the earrings catcher flexibly connects by bearing pin with an end of earrings; The other end of earrings and piston rod one end fixedly install, and piston rod is parallel with guide rail; The other end of piston rod passes end face of oil hydraulic cylinder damping loader, oil hydraulic cylinder and the piston in the oil hydraulic cylinder fixedly installs, and the oil hydraulic cylinder displacement transducer passes another end face of oil hydraulic cylinder and piston and piston rod and is slidingly matched; Piston is divided into rodless cavity and rod chamber with oil hydraulic cylinder, and rodless cavity is connected with same electro-hydraulic proportional valve by pipeline respectively with rod chamber, and the pipeline between rodless cavity and the electro-hydraulic proportional valve is provided with pressure transducer and flow transducer; The oil supply loop of electro-hydraulic proportional valve and oil return loop and fuel tank join, and oil supply loop is provided with Oil pump electrical machinery group and fluid filter; The spool of electro-hydraulic proportional valve is provided with valve core displacement sensor, valve core displacement sensor, oil hydraulic cylinder displacement transducer, pressure transducer and flow transducer are connected with the input end signal of control unit, the output terminal of control unit, disturbing signal loader and signal amplifier are connected with signal synthesizer, the disturbing signal of the output signal of control unit and disturbing signal loader is synthetic through signal synthesizer, and the output signal after signal amplifier amplifies is loaded on electro-hydraulic proportional valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101020798A CN101644284B (en) | 2009-08-31 | 2009-08-31 | Synchronous driving device |
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| CN2009101020798A CN101644284B (en) | 2009-08-31 | 2009-08-31 | Synchronous driving device |
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| CN101644284A CN101644284A (en) | 2010-02-10 |
| CN101644284B true CN101644284B (en) | 2011-11-16 |
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| CN2009101020798A Expired - Fee Related CN101644284B (en) | 2009-08-31 | 2009-08-31 | Synchronous driving device |
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| CN102996580A (en) * | 2012-11-27 | 2013-03-27 | 齐齐哈尔轨道交通装备有限责任公司 | Control system for side bearing oil cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458425A (en) * | 2003-05-30 | 2003-11-26 | 北京航空航天大学 | Multi-path synchronous hydraulic servo driving device |
| CN1603633A (en) * | 2004-11-03 | 2005-04-06 | 北京中水长固液分离技术有限公司 | Compressing apparatus and control method for multi-cylinder synchronously pressurizing |
| DE102005026506A1 (en) * | 2005-06-09 | 2006-12-14 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Controlling the synchronicity of piston-cylinder units for contacting a press roll with a guide roll, e.g. in a plastic film stretching unit, involves using separate hydraulic lines to balance the contact pressure at a set value |
| CN101131168A (en) * | 2006-08-23 | 2008-02-27 | 上海中欧汽车电器有限公司 | Safe double-cylinder hydraulic lifting mechanism with force synchronization in internal follow-up section |
| DE102007036274A1 (en) * | 2007-07-31 | 2009-02-05 | Helma Dannhoff | Lifting cylinder and lifting device |
| CN201486948U (en) * | 2009-08-31 | 2010-05-26 | 杭州电子科技大学 | Synchronous driving device |
-
2009
- 2009-08-31 CN CN2009101020798A patent/CN101644284B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458425A (en) * | 2003-05-30 | 2003-11-26 | 北京航空航天大学 | Multi-path synchronous hydraulic servo driving device |
| CN1603633A (en) * | 2004-11-03 | 2005-04-06 | 北京中水长固液分离技术有限公司 | Compressing apparatus and control method for multi-cylinder synchronously pressurizing |
| DE102005026506A1 (en) * | 2005-06-09 | 2006-12-14 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Controlling the synchronicity of piston-cylinder units for contacting a press roll with a guide roll, e.g. in a plastic film stretching unit, involves using separate hydraulic lines to balance the contact pressure at a set value |
| CN101131168A (en) * | 2006-08-23 | 2008-02-27 | 上海中欧汽车电器有限公司 | Safe double-cylinder hydraulic lifting mechanism with force synchronization in internal follow-up section |
| DE102007036274A1 (en) * | 2007-07-31 | 2009-02-05 | Helma Dannhoff | Lifting cylinder and lifting device |
| CN201486948U (en) * | 2009-08-31 | 2010-05-26 | 杭州电子科技大学 | Synchronous driving device |
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Owner name: HAIAN SERVICE CENTER FOR TRANSFORMATION OF SCIENTI Free format text: FORMER OWNER: HANGZHOU ELECTRONIC SCIENCE AND TECHNOLOGY UNIV Effective date: 20131021 |
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Effective date of registration: 20131021 Address after: 226600 No. 106 middle Yangtze Road, Haian County, Nantong, Jiangsu Patentee after: Haian Service Center for Transformation of Scientific Achievements Address before: Hangzhou City, Zhejiang province 310018 Jianggan District Xiasha Higher Education Park No. 2 street Patentee before: Hangzhou Electronic Science and Technology Univ |
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Application publication date: 20100210 Assignee: Nantong Zhongrao Teleika Elevator Co., Ltd. Assignor: Haian Service Center for Transformation of Scientific Achievements Contract record no.: 2014320000439 Denomination of invention: Synchronous driving devide for laser single-pulse selector Granted publication date: 20111116 License type: Exclusive License Record date: 20140521 |
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