CN102434511A - Multiple-cylinder synchronous hydraulic system - Google Patents
Multiple-cylinder synchronous hydraulic system Download PDFInfo
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- CN102434511A CN102434511A CN2011103742669A CN201110374266A CN102434511A CN 102434511 A CN102434511 A CN 102434511A CN 2011103742669 A CN2011103742669 A CN 2011103742669A CN 201110374266 A CN201110374266 A CN 201110374266A CN 102434511 A CN102434511 A CN 102434511A
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Abstract
The invention relates to a multiple-cylinder synchronous hydraulic system, which comprises an oil supply system and at least two hydraulic cylinders. A synchronous cylinder is arranged between the oil supply system and the hydraulic cylinders, a partition plate is arranged in the synchronous cylinder and divides the synchronous cylinder into cylinder barrels with the same number as the hydraulic cylinders, a piston is arranged in each cylinder barrel, and adjacent pistons are fixedly connected through a piston rod. Oil ports are respectively arranged on each cylinder barrel and located on two sides of each piston, the oil ports on the same side of each piston are communicated with the oil supply system, and the oil ports on the other side of each piston are communicated with corresponding hydraulic cylinders. Oil can be supplied to multiple hydraulic cylinders simultaneously through the synchronous cylinder, the number can be set according to practical requirements, and the generality is high. The multiple-cylinder synchronous hydraulic system utilizes the synchronous cylinder with a novel structure to achieve synchronization of multiple cylinders or even eight cylinders, solves limitations in existing synchronous technique, modifies some system errors, is wide in applicable load range and capacitance range and moderate in manufacture cost, and can achieve synchronous accuracy to over 99% through a hydraulic lock unit and an oil replenishing device.
Description
Technical field
The present invention relates to the hydraulic cylinder synchronous technical field, especially a kind of multicylinder synchronous hydraulic system.
Background technique
The function of synchronizing circuit is that two or more oil hydraulic cylinders displacement amount at the volley in the assurance system is identical or with identical speeds in the hydraulic system.Theoretically; The fluid that two identical oil hydraulic cylinders of work area are imported equivalent can make hydraulic cylinder synchronous; But the factors such as air content in leakage, surface friction drag, accuracy of manufacturing, outer load, structural elasticity distortion and the fluid all can make and be difficult to synchronously guarantee that for this reason, synchronizing circuit will overcome as far as possible or reduce the influence of these factors; Sometimes to take indemnifying measure, eliminate integrating error.As shown in Figure 1, the synchronizing circuit of the flow part flow arrangements such as oil hydraulic motor conduct that adopt same structure, same displacement is arranged in the existing technology.Two oil hydraulic motor axle rigid joint are imported the fluid of equivalent respectively in two measure-alike oil hydraulic cylinders, and two oil hydraulic cylinders are realized synchronously.The principal element that influences this synchronization accuracy has: motor owing to the error of MANUFACTURER cause discharge capacity difference, to act on leakage and surface friction drag that the load difference on the hydraulic cylinder piston causes not equal; Because used motor is generally the higher plunger type motor of plot ratio, so expense is higher.
Shown in Figure 2 for adopting the synchronizing circuit of synchronized cylinder; The useful area in synchronized cylinder A, B two chambeies equates, and two clutch release slave cylinder areas are also identical, then can realize synchronously; The synchronization accuracy of this synchronizing circuit depends on the machining accuracy and the sealing of oil hydraulic cylinder; General precision can reach 98～99% and since synchronized cylinder generally be unfit to do excessive, so this loop is only applicable to the occasion of small capacity.
Existing synchronizing circuit all has narrow limitation, and Fig. 1 Fig. 2 is only applicable to two hydraulic cylinder synchronous, and what have is only applicable to the less hydraulic system of load, the occasion that is only applicable to small capacity that has, and the cost that has is higher, and precision is low.
Summary of the invention
The technical problem that the present invention will solve is: in order to solve deficiency of the prior art, the present invention provides a kind of multicylinder synchronous hydraulic system, realizes multi-cylinder or even the synchronous hydraulic system of eight cylinders, improves synchronization accuracy.
The technical solution adopted for the present invention to solve the technical problems is: a kind of multicylinder synchronous hydraulic system; Comprise oil supply system and at least two oil hydraulic cylinders, be provided with synchronized cylinder between oil supply system and the oil hydraulic cylinder, be provided with dividing plate in the described synchronized cylinder; Described dividing plate is separated into the cylinder barrel identical with oil hydraulic cylinder quantity with synchronized cylinder; Be provided with piston in each cylinder barrel, be fixedly connected through piston rod between the adjacent pistons, the both sides that are positioned at piston on each cylinder barrel are respectively equipped with hydraulic fluid port; The hydraulic fluid port of each piston the same side is communicated with oil supply system, and the hydraulic fluid port of each piston opposite side is communicated with corresponding oil hydraulic cylinder.Simultaneously to a plurality of oil hydraulic cylinder fuel feeding, quantity can be set according to actual needs through synchronized cylinder, and versatility is bigger.
Concrete, according to actual usage requirement, the quantity of described oil hydraulic cylinder is four, described synchronized cylinder has four cylinder barrels.Four oil hydraulic cylinders are being provided with by four force bearing points of lifting workpiece respectively, realize synchronous operation, are applicable to the situation of medium load.
Further, when workpiece weight was big, according to actual needs, described oil hydraulic cylinder had four groups, was provided with two oil hydraulic cylinders in every group, and described synchronized cylinder has four cylinder barrels, and the hydraulic fluid port of each cylinder barrel is communicated with one group of corresponding oil hydraulic cylinder.Four groups of oil hydraulic cylinders are separately positioned on by four force bearing points of lifting workpiece, and two Position of Hydraulic Cylinder in every group are near placing, and load is consistent, can realize four group of eight cylinder synchronous operation, and precision is higher, and the load that is suitable for is bigger.
For preventing that oil cylinder from dropping and be convenient to backhaul control, be equipped with Pilot operated check valve on the pipeline of each cylinder barrel of described synchronized cylinder and the connection of corresponding oil hydraulic cylinder.
Be to realize the overload protection of oil hydraulic cylinder, be equipped with relief valve on the pipeline of each cylinder barrel of described synchronized cylinder and the connection of corresponding oil hydraulic cylinder.
For preventing when the backhaul entrained air in the pipeline, improve the degree of vacuum of hydraulic system, the return line of described oil hydraulic cylinder and oil supply system is provided with Solenoid ball valve.Solenoid ball valve is opened when backhaul, makes the oily suck-back in the fuel tank get into oil hydraulic cylinder,
Beneficial effect of the present invention; Multicylinder synchronous hydraulic of the present invention system adopts the synchronized cylinder of new structure to realize multi-cylinder or even the synchronous hydraulic system of eight cylinders, has solved the narrow limitation in the existing simultaneous techniques, revises some systematic errors; The loading range that is suitable for is wide; The range of capacity that is suitable for is wide, and manufacture cost is moderate, realizes that through hydraulic lock unit and recharging oil device synchronization accuracy is up to more than 99%.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is first kind of prior art constructions schematic representation;
Fig. 2 is second kind of prior art constructions schematic representation;
Fig. 3 is first embodiment's of multicylinder synchronous hydraulic of the present invention system a structural representation;
Fig. 4 is second embodiment's of multicylinder synchronous hydraulic of the present invention system a structural representation;
Fig. 5 is the structural representation of synchronized cylinder of the present invention.
Among the figure: 1. oil supply system, 2. oil hydraulic cylinder, 3. synchronized cylinder, 31. dividing plates, 32. cylinder barrels, 33. pistons, 34. piston rods, 4. Pilot operated check valve, 5. relief valve, 6. Solenoid ball valve.
Embodiment
Combine accompanying drawing that the present invention is done further detailed explanation now.These accompanying drawings are the schematic representation of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Fig. 3 Fig. 5 is first embodiment of multicylinder synchronous hydraulic of the present invention system; Comprise oil supply system 1 and four oil hydraulic cylinders 2; Be provided with synchronized cylinder 3 between oil supply system 1 and the oil hydraulic cylinder 2, be provided with dividing plate 31 in the synchronized cylinder 3, dividing plate 31 is separated into four cylinder barrels 32 with synchronized cylinder 3; Be provided with piston 33 in each cylinder barrel 32; Be fixedly connected through piston rod 34 between the adjacent pistons 33, the both sides that are positioned at piston 33 on each cylinder barrel 32 are respectively equipped with hydraulic fluid port, and the hydraulic fluid port of each piston 33 the same side is communicated with oil supply system 1; The hydraulic fluid port of each piston 33 opposite side is communicated with corresponding oil hydraulic cylinder 2; Be equipped with Pilot operated check valve 4 on the pipeline that each cylinder barrel 32 of synchronized cylinder 3 and corresponding oil hydraulic cylinder 2 is communicated with, be equipped with relief valve 5 on the pipeline of each cylinder barrel 32 of synchronized cylinder 3 and 2 connections of corresponding oil hydraulic cylinder, the return line of oil hydraulic cylinder 2 and oil supply system 1 is provided with Solenoid ball valve 6.
First embodiment of the present invention is applicable to the occasion of middle-size and small-size load, and synchronization accuracy can effectively be controlled at more than 99%.
Fig. 4 Fig. 5 is second embodiment of multicylinder synchronous hydraulic of the present invention system; Comprise oil supply system 1 and four groups of oil hydraulic cylinders 2, every group of oil hydraulic cylinder 2 has two oil hydraulic cylinders 2, is provided with synchronized cylinder 3 between oil supply system 1 and the oil hydraulic cylinder 2; Be provided with dividing plate 31 in the synchronized cylinder 3; Dividing plate 31 is separated into four cylinder barrels 32 with synchronized cylinder 3, is provided with piston 33 in each cylinder barrel 32, is fixedly connected through piston rod 34 between the adjacent pistons 33; The both sides that are positioned at piston 33 on each cylinder barrel 32 are respectively equipped with hydraulic fluid port; The hydraulic fluid port of each piston 33 the same side is communicated with oil supply system 1, and the hydraulic fluid port of each piston 33 opposite side is communicated with one group of corresponding oil hydraulic cylinder 2, is equipped with Pilot operated check valve 4 on the pipeline of each cylinder barrel 32 of synchronized cylinder 3 and two corresponding oil hydraulic cylinders, 2 connections; Be equipped with relief valve 5 on each cylinder barrel 32 of synchronized cylinder 3 and the pipeline that two oil hydraulic cylinders 2 are communicated with, oil hydraulic cylinder 2 is provided with Solenoid ball valve 6 with the return line of oil supply system 1.
Second embodiment of the present invention adopts four groups of oil hydraulic cylinders 2, and every group comprises two oil hydraulic cylinders 2, when load is very big, also can adopt every group of three oil hydraulic cylinders 2, can be fit to the occasion of big-and-middle-sized load, and synchronization accuracy can effectively be controlled at more than 99%.
Claims (6)
1. multicylinder synchronous hydraulic system; It is characterized in that: comprise oil supply system (1) and at least two oil hydraulic cylinders (2), be provided with synchronized cylinder (3) between oil supply system (1) and the oil hydraulic cylinder (2), be provided with dividing plate (31) in the described synchronized cylinder (3); Described dividing plate (31) is separated into the cylinder barrel (32) identical with oil hydraulic cylinder (2) quantity with synchronized cylinder (3); Be provided with piston (33) in each cylinder barrel (32), be fixedly connected through piston rod (34) between the adjacent pistons (33), the both sides that are positioned at piston (33) on each cylinder barrel (32) are respectively equipped with hydraulic fluid port; The hydraulic fluid port of each piston (33) the same side is communicated with oil supply system (1), and the hydraulic fluid port of each piston (33) opposite side is communicated with corresponding oil hydraulic cylinder (2).
2. multicylinder synchronous hydraulic according to claim 1 system, it is characterized in that: the quantity of described oil hydraulic cylinder (2) is four, described synchronized cylinder (3) has four cylinder barrels (32).
3. multicylinder synchronous hydraulic according to claim 1 system; It is characterized in that: described oil hydraulic cylinder (2) has four groups; Be provided with two oil hydraulic cylinders (2) in every group, described synchronized cylinder (3) has four cylinder barrels (32), and the hydraulic fluid port of each cylinder barrel (32) is communicated with corresponding one group of oil hydraulic cylinder (2).
4. according to claim 2 or 3 described multicylinder synchronous hydraulic systems, it is characterized in that: be equipped with Pilot operated check valve (4) on each cylinder barrel (32) of described synchronized cylinder (3) and the pipeline that corresponding oil hydraulic cylinder (2) is communicated with.
5. according to claim 1 or 2 or 3 described multicylinder synchronous hydraulic systems, it is characterized in that: be equipped with relief valve (5) on each cylinder barrel (32) of described synchronized cylinder (3) and the pipeline that corresponding oil hydraulic cylinder (2) is communicated with.
6. multicylinder synchronous hydraulic according to claim 1 system is characterized in that: described oil hydraulic cylinder (2) is provided with Solenoid ball valve (6) with the return line of oil supply system (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103742669A CN102434511A (en) | 2011-11-22 | 2011-11-22 | Multiple-cylinder synchronous hydraulic system |
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| CN2011103742669A CN102434511A (en) | 2011-11-22 | 2011-11-22 | Multiple-cylinder synchronous hydraulic system |
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| CN102434511A true CN102434511A (en) | 2012-05-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758806A (en) * | 2012-07-18 | 2012-10-31 | 天津市天锻压力机有限公司 | Crossbeam press multi-hydraulic cushion synchronous control system |
| CN103120059A (en) * | 2013-03-09 | 2013-05-29 | 莱恩农业装备有限公司 | Hydraulic system of full-hydraulic rice transplanter with differential locking function |
| CN103438039A (en) * | 2013-09-09 | 2013-12-11 | 上海其胜设备配件有限公司 | Control method of self-reversing driving loop of synchronous cylinders |
| CN104096790A (en) * | 2013-04-07 | 2014-10-15 | 天津市天锻压力机有限公司 | Synchronous cylinder centering device for ring-forging hydraulic press |
| CN112228418A (en) * | 2020-11-26 | 2021-01-15 | 太重集团榆次液压工业(济南)有限公司 | Hydraulic synchronization system based on volume control and control method |
| CN112303048A (en) * | 2020-11-03 | 2021-02-02 | 中国航发沈阳发动机研究所 | Synchronous displacement mechanism of hydraulic actuator cylinder |
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| US4706458A (en) * | 1985-06-24 | 1987-11-17 | Corghi Elettromeccanica S.P.A. | Hydraulic system for controlling motor vehicle lifts in general |
| FR2695861A1 (en) * | 1992-09-22 | 1994-03-25 | Sipad Sa | Hydraulic power and speed selector for press mfr. - has hydro-electric detector connected to primary actuator chamber to sense changes in press closure speed and power. |
| CN2878759Y (en) * | 2005-11-21 | 2007-03-14 | 阜新市液压气动配套厂 | Hydraulic synchronous distributor |
| CN201890108U (en) * | 2010-11-08 | 2011-07-06 | 湖北三江航天万山特种车辆有限公司 | Proportional synchronous lifting system |
| CN102116326A (en) * | 2011-02-23 | 2011-07-06 | 周建新 | Hydraulic push-pull synchronization method and device thereof |
| CN202391837U (en) * | 2011-11-22 | 2012-08-22 | 江苏龙城洪力液压设备有限公司 | Multi-cylinder synchronous hydraulic system |
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2011
- 2011-11-22 CN CN2011103742669A patent/CN102434511A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4706458A (en) * | 1985-06-24 | 1987-11-17 | Corghi Elettromeccanica S.P.A. | Hydraulic system for controlling motor vehicle lifts in general |
| FR2695861A1 (en) * | 1992-09-22 | 1994-03-25 | Sipad Sa | Hydraulic power and speed selector for press mfr. - has hydro-electric detector connected to primary actuator chamber to sense changes in press closure speed and power. |
| CN2878759Y (en) * | 2005-11-21 | 2007-03-14 | 阜新市液压气动配套厂 | Hydraulic synchronous distributor |
| CN201890108U (en) * | 2010-11-08 | 2011-07-06 | 湖北三江航天万山特种车辆有限公司 | Proportional synchronous lifting system |
| CN102116326A (en) * | 2011-02-23 | 2011-07-06 | 周建新 | Hydraulic push-pull synchronization method and device thereof |
| CN202391837U (en) * | 2011-11-22 | 2012-08-22 | 江苏龙城洪力液压设备有限公司 | Multi-cylinder synchronous hydraulic system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758806A (en) * | 2012-07-18 | 2012-10-31 | 天津市天锻压力机有限公司 | Crossbeam press multi-hydraulic cushion synchronous control system |
| CN102758806B (en) * | 2012-07-18 | 2015-05-13 | 天津市天锻压力机有限公司 | Crossbeam press multi-hydraulic cushion synchronous control system |
| CN103120059A (en) * | 2013-03-09 | 2013-05-29 | 莱恩农业装备有限公司 | Hydraulic system of full-hydraulic rice transplanter with differential locking function |
| CN104096790A (en) * | 2013-04-07 | 2014-10-15 | 天津市天锻压力机有限公司 | Synchronous cylinder centering device for ring-forging hydraulic press |
| CN103438039A (en) * | 2013-09-09 | 2013-12-11 | 上海其胜设备配件有限公司 | Control method of self-reversing driving loop of synchronous cylinders |
| CN103438039B (en) * | 2013-09-09 | 2017-01-18 | 上海其胜设备配件有限公司 | Control method of self-reversing driving loop of synchronous cylinders |
| CN112303048A (en) * | 2020-11-03 | 2021-02-02 | 中国航发沈阳发动机研究所 | Synchronous displacement mechanism of hydraulic actuator cylinder |
| CN112228418A (en) * | 2020-11-26 | 2021-01-15 | 太重集团榆次液压工业(济南)有限公司 | Hydraulic synchronization system based on volume control and control method |
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Application publication date: 20120502 |