CN102992224A - Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system - Google Patents
Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system Download PDFInfo
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- CN102992224A CN102992224A CN2012105035440A CN201210503544A CN102992224A CN 102992224 A CN102992224 A CN 102992224A CN 2012105035440 A CN2012105035440 A CN 2012105035440A CN 201210503544 A CN201210503544 A CN 201210503544A CN 102992224 A CN102992224 A CN 102992224A
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- elevating ram
- directional control
- solenoid directional
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Abstract
The invention relates to a multi-hydraulic-cylinder electro-hydraulic synchronous lifting system which is characterized by comprising a main oil path. An oil pump (1), an electro-hydraulic reversing valve (2), a one-way throttling valve (3), a synchronous valve (4) and two branch oil paths are sequentially arranged on the main oil path from front to back; a first branch oil path is sequentially provided with an electromagnetic reversing valve A (5.1) and a lifting oil cylinder group A (6.1) from front to back; a second branch oil path is sequentially provided with an electromagnetic reversing valve B (5.2) and a lifting oil cylinder group B (6.2) from front to back; an electric system is arranged between the lifting oil cylinder group A (6.1) and the lifting oil cylinder group B (6.2); and an overlapped type one-way throttling valve (8) and an electromagnetic reversing valve (9) are connected beside the branch oil paths in front of the electromagnetic reversing valve A (5.1) and the electromagnetic reversing valve B (5.2). The multi-hydraulic-cylinder electro-hydraulic synchronous lifting system provided by the invention has the advantages of simple structure, high economical benefits, and higher synchronous precision.
Description
Technical field
The present invention relates to the electric liquid synchronous lifting of a kind of multi-hydraulic-cylinder system, belong to the hydraulic control system field, can be widely used in the hydraulic machinery of the larger workpiece of lifting.
Background technology
Conventional synchronous control system generally adopts synchronous valve, electrohydraulic servo system, synchronous hydraulic motor or oil pump control, although adopt synchronous valve control cost lower, because the synchronous valve precision is lower, result of use is undesirable in the oil cylinder control of longer stroke; Electrohydraulic servo system is because cost is higher, control more complicated and very high to the cleanliness level requirement of hydraulic efficiency pressure system, so generally only use at precision optical machinery; Synchronous hydraulic motor or oil pump are because long-term service precision has affected synchronization accuracy after reducing.Therefore seek a kind of simple in structure, economy, the more much higher hydraulic cylinder electrohydraulic synchronous lifting of synchronization accuracy system is particularly important.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of simple in structure, economy, the more much higher hydraulic cylinder electrohydraulic synchronous lifting of synchronization accuracy system are provided.
The object of the present invention is achieved like this:
The electric liquid synchronous lifting of a kind of multi-hydraulic-cylinder system, it comprises working connection, be disposed with from front to back oil pump on the described working connection, electro-hydraulic reversing valve, one-way throttle valve, synchronous valve and two oil circuits, article one, props up and be disposed with from front to back solenoid directional control valve A and elevating ram group A on the oil circuit, second props up and is disposed with from front to back solenoid directional control valve B and elevating ram group B on the oil circuit, be provided with electric system in the middle of described elevating ram group A and the elevating ram group B, described electric system comprises fork, the left and right sides of described fork bottom is respectively arranged with inductor A and inductor B, and an oil circuit in described solenoid directional control valve A and solenoid directional control valve B the place ahead is other stacked unidirectional throttle valve and the solenoid directional control valve of being connected to all.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts the hydraulic efficiency pressure system of synchronous valve and electro-hydraulic reversing valve combination, and to reach by electric system control be the multi-hydraulic-cylinder synchronous lifting system of purpose synchronously.That this system has is simple in structure, economy, characteristics that synchronization accuracy is higher.It is synchronous to guarantee that a plurality of hydraulic actuating cylinder groups go up at an arbitrary position, and all can automatically eliminate end point error at upper and lower stroke terminal point, has effectively avoided the accumulation of error.
Description of drawings
Fig. 1 is the structural representation of the electric liquid synchronous lifting of multi-hydraulic-cylinder of the present invention system.
Wherein:
Electro-hydraulic reversing valve 2
One-way throttle valve 3
Synchronous valve 4
Solenoid directional control valve A5.1, solenoid directional control valve B5.2
Elevating ram group A6.1, elevating ram group B6.2
Fork 7.1, inductor A7.2, inductor B7.3
Stacked unidirectional throttle valve 8
Solenoid directional control valve 9.
The specific embodiment
Referring to Fig. 1, the electric liquid synchronous lifting of a kind of multi-hydraulic-cylinder system that the present invention relates to, it comprises working connection, be disposed with from front to back oil pump 1 on the described working connection, electro-hydraulic reversing valve 2, one-way throttle valve 3, synchronous valve 4 and two oil circuits, article one, props up and be disposed with from front to back solenoid directional control valve A5.1 and elevating ram group A6.1 on the oil circuit, second props up and is disposed with from front to back solenoid directional control valve B5.2 and elevating ram group B6.2 on the oil circuit, be arranged in parallel about described elevating ram group A6.1 and elevating ram group B6.2, be provided with electric system in the middle of described elevating ram group A6.1 and the elevating ram group B6.2, described electric system comprises the fork 7.1 of vertical layout, the left and right sides of described fork 7.1 bottoms is respectively arranged with inductor A7.2 and inductor B7.3, and an oil circuit in described solenoid directional control valve A5.1 and solenoid directional control valve B5.2 the place ahead is other stacked unidirectional throttle valve 8 and the solenoid directional control valve 9 of being connected to all.
The electromagnet A and the electromagnet B that arrange about wherein being provided with on the electro-hydraulic reversing valve 2, be provided with electromagnet C on the solenoid directional control valve A5.1, be provided with electromagnet D on the solenoid directional control valve B5.2, the electromagnet E and the electromagnet F that arrange about being provided with on the solenoid directional control valve 9, the one-way throttle valve A and the one-way throttle valve B that arrange about being provided with on the stacked unidirectional throttle valve 8.
Principle of work:
1, elevating ram rises synchronously
Electromagnet B, electromagnet C and electromagnet D get electric, oil pump 1 output fluid through electro-hydraulic reversing valve 2, one-way throttle valve 3, synchronous valve 4 branch to solenoid directional control valve A5.1, solenoid directional control valve B5.2 enters the elevating ram group; If the ascending velocity of elevating ram group A6.1 surpasses the ascending velocity of elevating ram group B6.2 in lifting process, fork 7.1 is offset to elevating ram group B6.2, inductor B7.3 sender, electromagnet E gets electric, electromagnet C dead electricity, enter the fluid bypass of elevating ram group A6.1 through one-way throttle valve A, solenoid directional control valve 9 enters fuel tank, the oil inlet quantity of elevating ram group B6.2 is constant, thereby guarantee the synchronous of lifting process, fork 7.1 breaks away from inductor B7.3 at this moment, electromagnet C gets electric, electromagnet E dead electricity, elevating ram group A6.1 and elevating ram group B6.2 normal operation; Otherwise in like manner.
2, elevating ram descends synchronously
Electromagnet A, electromagnet C and electromagnet D get electric, because the fluid of the deadweight elevating ram group A6.1 of lifting thing and elevating ram group B6.2 enters fuel tank 2 times through solenoid directional control valve A5.1 and solenoid directional control valve B5.2, synchronous valve 4, one-way throttle valve 3, electro-hydraulic reversing valve; If the descending speed of elevating ram group A6.1 surpasses the descending speed of elevating ram group B6.2 in the decline process, fork 7.1 is offset to elevating ram group A6.1, inductor A7.2 sender, electromagnet F gets electric, electromagnet C dead electricity, make the fluid bypass of elevating ram group B6.2 through one-way throttle valve B, solenoid directional control valve 9 enters fuel tank, make elevating ram group B6.2 accelerate oil extraction, thereby guarantee that elevating ram group A6.1 and elevating ram group B6.2 descend synchronously, this moment, fork broke away from inductor A7.2, electromagnet C gets electric, electromagnet F dead electricity, elevating ram group A6.1 and elevating ram group B6.2 normal operation; Otherwise in like manner.
In control process, fork 7.1 must be sensitive, and synchronization accuracy guarantees by the position of adjusting inductor A7.2, inductor B7.3.
The distance of elevating ram group A6.1 and elevating ram group B6.2 is more opened, and the synchronization accuracy of system is higher.
Claims (1)
1. multi-hydraulic-cylinder electricity liquid synchronous lifting system, it is characterized in that it comprises working connection, be disposed with from front to back oil pump (1) on the described working connection, electro-hydraulic reversing valve (2), one-way throttle valve (3), synchronous valve (4) and two oil circuits, article one, prop up and be disposed with from front to back solenoid directional control valve A(5.1 on the oil circuit) and elevating ram group A(6.1), second props up and is disposed with from front to back solenoid directional control valve B(5.2 on the oil circuit) and elevating ram group B(6.2), described elevating ram group A(6.1) with elevating ram group B(6.2) the middle electric system that is provided with, described electric system comprises fork (7.1), the left and right sides of described fork (7.1) bottom is respectively arranged with inductor A(7.2) and inductor B(7.3), described solenoid directional control valve A(5.1) and solenoid directional control valve B(5.2) equal other stacked unidirectional throttle valve (8) and the solenoid directional control valves (9) of being connected to of oil circuit in the place ahead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105035440A CN102992224A (en) | 2012-12-01 | 2012-12-01 | Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105035440A CN102992224A (en) | 2012-12-01 | 2012-12-01 | Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system |
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| CN102992224A true CN102992224A (en) | 2013-03-27 |
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| CN2012105035440A Pending CN102992224A (en) | 2012-12-01 | 2012-12-01 | Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645324A (en) * | 2016-04-18 | 2016-06-08 | 湖南五新隧道智能装备股份有限公司 | Cantilever crane motion hydraulic system and tunnel lagging jack operating vehicle |
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| US4230304A (en) * | 1977-12-12 | 1980-10-28 | Itt Industries, Inc. | Arrangement to obtain equal travel of hydraulic cylinders |
| WO1995011190A1 (en) * | 1993-10-22 | 1995-04-27 | Ravaglioli S.P.A. | Electrohydraulic lifting device for motor vehicles |
| CN2635967Y (en) * | 2003-06-30 | 2004-08-25 | 宝钢集团上海第一钢铁有限公司 | Multi-hydraulic cylinder system |
| CN1942674A (en) * | 2005-02-22 | 2007-04-04 | 粉刷师股份公司 | Hydraulic drive, especially for two-cylinder thick matter pumps |
| CN200978844Y (en) * | 2006-06-16 | 2007-11-21 | 代其新 | Synchronous equal-force double-cylinder system |
| CN101450773A (en) * | 2008-09-25 | 2009-06-10 | 苏州万佳液压升降机械有限公司 | Lifting device for rubbish compressing box |
| CN201258884Y (en) * | 2008-08-29 | 2009-06-17 | 天水锻压机床有限公司 | Synchronous control system for lifting oil cylinder |
| CN102021899A (en) * | 2009-09-21 | 2011-04-20 | 邵阳维克液压股份有限公司 | Synchronizing circuit applicable to double suspension hoist |
| CN202064326U (en) * | 2011-04-27 | 2011-12-07 | 扬州市飞龙气动液压设备有限公司 | Synchronous split hydraulic hoist |
| CN202360487U (en) * | 2011-11-25 | 2012-08-01 | 徐州达一锻压设备有限公司 | Bidirectional synchronous hydraulic system |
| CN203048491U (en) * | 2012-12-01 | 2013-07-10 | 江苏华宏科技股份有限公司 | Electro-hydraulic synchronous hoisting system with multiple hydraulic cylinders |
-
2012
- 2012-12-01 CN CN2012105035440A patent/CN102992224A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230304A (en) * | 1977-12-12 | 1980-10-28 | Itt Industries, Inc. | Arrangement to obtain equal travel of hydraulic cylinders |
| WO1995011190A1 (en) * | 1993-10-22 | 1995-04-27 | Ravaglioli S.P.A. | Electrohydraulic lifting device for motor vehicles |
| CN2635967Y (en) * | 2003-06-30 | 2004-08-25 | 宝钢集团上海第一钢铁有限公司 | Multi-hydraulic cylinder system |
| CN1942674A (en) * | 2005-02-22 | 2007-04-04 | 粉刷师股份公司 | Hydraulic drive, especially for two-cylinder thick matter pumps |
| CN200978844Y (en) * | 2006-06-16 | 2007-11-21 | 代其新 | Synchronous equal-force double-cylinder system |
| CN201258884Y (en) * | 2008-08-29 | 2009-06-17 | 天水锻压机床有限公司 | Synchronous control system for lifting oil cylinder |
| CN101450773A (en) * | 2008-09-25 | 2009-06-10 | 苏州万佳液压升降机械有限公司 | Lifting device for rubbish compressing box |
| CN102021899A (en) * | 2009-09-21 | 2011-04-20 | 邵阳维克液压股份有限公司 | Synchronizing circuit applicable to double suspension hoist |
| CN202064326U (en) * | 2011-04-27 | 2011-12-07 | 扬州市飞龙气动液压设备有限公司 | Synchronous split hydraulic hoist |
| CN202360487U (en) * | 2011-11-25 | 2012-08-01 | 徐州达一锻压设备有限公司 | Bidirectional synchronous hydraulic system |
| CN203048491U (en) * | 2012-12-01 | 2013-07-10 | 江苏华宏科技股份有限公司 | Electro-hydraulic synchronous hoisting system with multiple hydraulic cylinders |
Non-Patent Citations (3)
| Title |
|---|
| T.MCDUFFIE,等: "放油回路使两液压缸同步", 《液压与气动》, no. 01, 31 December 1979 (1979-12-31), pages 50 - 52 * |
| 倪士浩: "基于液压技术的地铁防淹门系统方案", 《城市轨道交通研究》, no. 8, 31 August 2008 (2008-08-31), pages 47 - 52 * |
| 黄海涛: "液压缸同步回路的设计与应用", 《流体传动与控制》, no. 5, 30 September 2006 (2006-09-30), pages 39 - 41 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645324A (en) * | 2016-04-18 | 2016-06-08 | 湖南五新隧道智能装备股份有限公司 | Cantilever crane motion hydraulic system and tunnel lagging jack operating vehicle |
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Application publication date: 20130327 |