CN103693592A - Walking hydraulic system for scissor-type overhead working truck - Google Patents
Walking hydraulic system for scissor-type overhead working truck Download PDFInfo
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- CN103693592A CN103693592A CN201310338149.6A CN201310338149A CN103693592A CN 103693592 A CN103693592 A CN 103693592A CN 201310338149 A CN201310338149 A CN 201310338149A CN 103693592 A CN103693592 A CN 103693592A
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- control valve
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- 239000012530 fluid Substances 0.000 claims description 9
- 230000003028 elevating effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 206010020852 Hypertonia Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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Abstract
The invention discloses a walking hydraulic system for a scissor-type overhead working truck. A power unit (2) is connected with a lifting two-position four-way electromagnetic directional valve (3), wherein the lifting two-position four-way electromagnetic directional valve (3) is connected with a priority valve (5); the priority valve (5) is connected with a steering three-position four-way electromagnetic directional valve (6); one path of the outlets of the priority valve (5) and a one-way valve (13) is connected with a walking brake (18), and the other path is connected with a three-position four-way electromagnetic directional valve (7); one oil port of the three-position four-way electromagnetic directional valve (7) is connected with a first one-way sequence valve (10); the first one-way sequence valve (10) is connected with a first walking motor (17), and is connected with a second walking motor (29) through a two-position four-way electromagnetic directional valve (12); one oil port of the three-position four-way electromagnetic directional valve (7) is connected with a second one-way sequence valve (11); the second one-way sequence valve (11) is connected with a second walking motor (29), and is connected with a first walking motor (17) through the second two-position four-way electromagnetic directional valve (12). The walking hydraulic system for the scissor-type overhead working truck has the advantages of saving energy and reducing production cost.
Description
Technical field
The present invention relates to a kind of scissor-type aerial platform, particularly relate to a kind of scissor-type aerial platform vibration hydraulic system.
Background technology
Automatic travelling hydraulic motor drives scissor aerial work platform conventionally to require walking to have 3 kinds of speed to switch, its switching by the hydraulic circuit series and parallel connections between two motors realizes, and while causing car load to travel below different speed, hydraulic efficiency pressure system has different pressure.Low speed walking after platform raising, the pressure of now walking is minimum, while holding during drg meeting, closes, and causes vehicle to run non-continuous event.If take, two motor oil-feeds place, add balance cock, pressure regulates too high, and during walking, system pressure is too high, causes energy dissipation, has greatly shortened the period of service after Vehicular charging.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of conserve energy, the scissor-type aerial platform vibration hydraulic system saving production cost.
In order to solve the problems of the technologies described above, scissor-type aerial platform vibration hydraulic system provided by the invention, comprise power unit, elevating ram, lifting two-position four-way solenoid directional control valve, pressure-gradient control valve, steering cylinder, turn to 3-position 4-way solenoid directional control valve, check valve, walking drg, braking pilot operated directional control valve, braking manual pump, 3-position 4-way solenoid directional control valve, the first running motor, the second running motor and return filter, described power unit connects described lifting two-position four-way solenoid directional control valve, described lifting two-position four-way solenoid directional control valve connects described pressure-gradient control valve, described pressure-gradient control valve connects the described 3-position 4-way solenoid directional control valve that turns to, outlet one tunnel of described pressure-gradient control valve and described check valve is connected braking pilot operated directional control valve and the braking manual pump of described walking drg, one tunnel connects described 3-position 4-way solenoid directional control valve, a hydraulic fluid port of described 3-position 4-way solenoid directional control valve is connected with the first one way sequence valve, the first described one way sequence valve connects the first described running motor and connects the second described running motor by two-position four-way solenoid directional control valve, a hydraulic fluid port of described 3-position 4-way solenoid directional control valve connects the second one way sequence valve, the second described one way sequence valve connects the second described running motor and connects the first described running motor by described two-position four-way solenoid directional control valve, a hydraulic fluid port of described 3-position 4-way solenoid directional control valve connects described return filter.
Adopt the scissor-type aerial platform vibration hydraulic system of technique scheme; during walking to the protection of drg with use energy-conservation; by suitable one way sequence valve and the drg of opening pressure, be used in conjunction with; while making to walk, hydraulic system pressure remains at more than drg opens pressure, but is unlikely to again hypertonia.Optimize whole hydraulic efficiency pressure system, controlling lifting function spool in advance, loss of pressure while reducing lifting action, cut forklift-walking and use under the prerequisite of function and remove redundant valve core meeting, the high low speed of Vehicle Driving Cycle switches as long as switched by a spool, has reduced the local pressure loss of hydraulic efficiency pressure system when walking and along stroke pressure, has lost conserve energy, improve the period of service after vehicle single charge, also saved widely productive costs simultaneously.
Compared with prior art, the invention has the advantages that: when vehicle to run, keep certain system pressure to guarantee that drg is always in open mode, hydraulic system pressure is not too high again simultaneously, hydraulic system pressure while having reduced lifting and walking, play energy-conservation effect, improve the period of service after vehicle single charge.
Accompanying drawing explanation
Fig. 1 is original hydraulic system principle figure.
Fig. 2 is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Referring to Fig. 1, existing scissor-type aerial platform vibration hydraulic system, comprise oil absorption filter 1, power unit 2, lifting two-position four-way solenoid directional control valve 3, lifting by pass valve 4, pressure-gradient control valve 5, turn to 3-position 4-way solenoid directional control valve 6, 3-position 4-way solenoid directional control valve 7, braking pilot operated directional control valve 8, braking manual pump 9, check valve 13, turn to by pass valve 14, by pass valve 15, return filter 16, the first running motor 17, walking drg 18, elevating ram 19, steering cylinder 20, the first electromagnetic valve 23, the second electromagnetic valve 24, constant flow spool 25, balance cock 26, shutoff valve 27, the first check valve 28 and the second running motor 29, hydraulic efficiency pressure system provides hydraulic oil by power unit 2, hydraulic oil enters main valve piece, main system pressure is controlled by by pass valve 15, through a part of flow of pressure-gradient control valve 5, enter steering cylinder 20 again, another part enters main hydraulic system, steering pressure is by turning to by pass valve 14 to control, pressure oil enters 3-position 4-way solenoid directional control valve 7 through lifting two-position four-way solenoid directional control valve 3 again, wherein shuttle valve 21 gets that oil enters braking pilot operated directional control valve 8 and braking manual pump 9 is opened walking drg 18, walking moves forward and backward and controls by 3-position 4-way solenoid directional control valve 7.During low speed walking, hydraulic oil enters respectively two running motors by flow divider-combiner 22, now two running motor parallel connections.During high speed the first electromagnetic valve 23 and the second electromagnetic valve 24 simultaneously electric, now hydraulic oil enters then oil sump tank of another one motor through the first electromagnetic valve 23 again by the second electromagnetic valve 24 and motor, now two running motors series connection.Switching by the hydraulic circuit series and parallel connections between two running motors realizes, and while causing car load to travel below different speed, hydraulic efficiency pressure system has different pressure.Low speed walking after platform raising, the pressure of now walking is minimum, while holding during 18 meeting of walking drg, closes, and causes vehicle to run non-continuous event.If take, two running motor oil-feeds place, add balance cock 26, pressure regulates too high, and during walking, system pressure is too high, causes energy dissipation, has greatly shortened the period of service after Vehicular charging.
Referring to Fig. 2, oil absorption filter 1 connects power unit 2, power unit 2 connects the lifting two-position four-way solenoid directional control valve 3 of elevating ram 19, elevating ram 19 is provided with lifting by pass valve 4, lifting two-position four-way solenoid directional control valve 3 connects pressure-gradient control valve 5, what pressure-gradient control valve 5 connected steering cylinders 20 turns to 3-position 4-way solenoid directional control valve 6, steering cylinder 20 is provided with check valve 13 and turns to by pass valve 14, outlet one tunnel of pressure-gradient control valve 5 and check valve 13 is connected braking pilot operated directional control valve 8 and the braking manual pump 9 of the drg 18 of walking, one tunnel is connected with 3-position 4-way solenoid directional control valve 7, a hydraulic fluid port of 3-position 4-way solenoid directional control valve 7 is connected with the first one way sequence valve 10, the first one way sequence valve 10 connects the first running motor 17 and connects the second running motor 29 by two-position four-way solenoid directional control valve 12, a hydraulic fluid port of 3-position 4-way solenoid directional control valve 7 connects the second one way sequence valve 11, the second one way sequence valve 11 connects the second running motor 29 and connects the first running motor 17 by two-position four-way solenoid directional control valve 12, a hydraulic fluid port of 3-position 4-way solenoid directional control valve 7 connects return filter 16, between power unit 2 and return filter 16, be connected with by pass valve 15.
Referring to Fig. 2; originally in scissor-type aerial platform vibration hydraulic system when walking providing, is to the protection of walking drg 18 and use energy-conservation; by suitable the first one way sequence valve 10 and the second one way sequence valve 11 of opening pressure, be used in conjunction with walking drg 18; more than hydraulic system pressure remains at walking drg 18 opens pressure while making to walk, but be unlikely to again hypertonia.Optimize whole hydraulic efficiency pressure system, the lifting two-position four-way solenoid directional control valve 3 of controlling elevating ram 19 lifting functions is shifted to an earlier date, loss of pressure while reducing lifting action, cut forklift-walking and use under the prerequisite of function and remove redundant valve core meeting, the high low speed of Vehicle Driving Cycle switches as long as switched by a spool, reduced the local pressure loss of hydraulic efficiency pressure system when walking and lost along stroke pressure, conserve energy, improve the period of service after vehicle single charge, also saved widely productive costs simultaneously.
Claims (1)
1. a scissor-type aerial platform vibration hydraulic system, comprise power unit (2), elevating ram (19), lifting two-position four-way solenoid directional control valve (3), pressure-gradient control valve (5), steering cylinder (20), turn to 3-position 4-way solenoid directional control valve (6), check valve (13), walking drg (18), braking pilot operated directional control valve (8), braking manual pump (9), 3-position 4-way solenoid directional control valve (7), the first running motor (17), the second running motor (29) and return filter (16), it is characterized in that: described power unit (2) connects described lifting two-position four-way solenoid directional control valve (3), described lifting two-position four-way solenoid directional control valve (3) connects described pressure-gradient control valve (5), described pressure-gradient control valve (5) connects the described 3-position 4-way solenoid directional control valve (6) that turns to, outlet one tunnel of described pressure-gradient control valve (5) and described check valve (13) is connected the braking pilot operated directional control valve (8) of described walking drg (18) and brakes manual pump (9), one tunnel connects described 3-position 4-way solenoid directional control valve (7), a hydraulic fluid port of described 3-position 4-way solenoid directional control valve (7) is connected with the first one way sequence valve (10), described the first one way sequence valve (10) connects described the first running motor (17) and connects described the second running motor (29) by two-position four-way solenoid directional control valve (12), a hydraulic fluid port of described 3-position 4-way solenoid directional control valve (7) connects the second one way sequence valve (11), described the second one way sequence valve (11) connects described the second running motor (29) and connects described the first running motor (17) by described two-position four-way solenoid directional control valve (12), a hydraulic fluid port of described 3-position 4-way solenoid directional control valve (7) connects described return filter (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310338149.6A CN103693592B (en) | 2013-08-06 | 2013-08-06 | A kind of scissor-type aerial platform vibration hydraulic system |
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| CN201310338149.6A CN103693592B (en) | 2013-08-06 | 2013-08-06 | A kind of scissor-type aerial platform vibration hydraulic system |
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| CN103693592A true CN103693592A (en) | 2014-04-02 |
| CN103693592B CN103693592B (en) | 2015-09-30 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114379A (en) * | 2015-09-30 | 2015-12-02 | 湖南星邦重工有限公司 | Lifting platform and hydraulic system thereof |
| CN106050769A (en) * | 2016-08-08 | 2016-10-26 | 湖南星邦重工有限公司 | Lifting platform and hydraulic driving system thereof |
| CN106314137A (en) * | 2015-06-16 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Walking brake control hydraulic system and shear-fork aerial work platform |
| CN106976825A (en) * | 2017-04-01 | 2017-07-25 | 浙江高宇液压机电有限公司 | Bypass the scissor aerial work platform hydraulic control system of off-load electromagnetic direct-drive |
| CN107061388A (en) * | 2017-04-07 | 2017-08-18 | 临工集团济南重机有限公司 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
| CN108412827A (en) * | 2018-05-16 | 2018-08-17 | 湖南星邦重工有限公司 | A kind of hydraulic moving control system |
| CN110147054A (en) * | 2019-04-22 | 2019-08-20 | 威海华创自动化设备有限公司 | A kind of scissor vehicle electric controller |
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| CN203474395U (en) * | 2013-08-06 | 2014-03-12 | 湖南星邦重工有限公司 | Scissor-type high-altitude working vehicle walking hydraulic system |
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2013
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| JPH06247692A (en) * | 1993-02-25 | 1994-09-06 | Tadano Ltd | Turn braking device for working vehicle with boom |
| JPH06297970A (en) * | 1993-04-15 | 1994-10-25 | Hitachi Constr Mach Co Ltd | Travel hydraulic control for working vehicle |
| US20010030085A1 (en) * | 2000-02-28 | 2001-10-18 | Hisao Nagata | Hydraulic device for industrial vehicles |
| CN2561981Y (en) * | 2002-07-18 | 2003-07-23 | 江苏省机电研究所有限公司 | Hydraulic control system for high altitude operation vehicle |
| WO2004083689A1 (en) * | 2003-03-18 | 2004-09-30 | Kobelco Cranes Co., Ltd. | Hydraulic travel drive device and motor vehicle with hydraulic travel drive |
| CN101058395A (en) * | 2006-04-19 | 2007-10-24 | 浙江佳力科技股份有限公司 | Full hydraulic electric forklift hydraulic system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314137A (en) * | 2015-06-16 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Walking brake control hydraulic system and shear-fork aerial work platform |
| CN106314137B (en) * | 2015-06-16 | 2019-07-23 | 徐工集团工程机械股份有限公司 | A kind of walking control for brake hydraulic system and scissor aerial work platform |
| CN105114379A (en) * | 2015-09-30 | 2015-12-02 | 湖南星邦重工有限公司 | Lifting platform and hydraulic system thereof |
| CN106050769A (en) * | 2016-08-08 | 2016-10-26 | 湖南星邦重工有限公司 | Lifting platform and hydraulic driving system thereof |
| CN106976825A (en) * | 2017-04-01 | 2017-07-25 | 浙江高宇液压机电有限公司 | Bypass the scissor aerial work platform hydraulic control system of off-load electromagnetic direct-drive |
| CN107061388A (en) * | 2017-04-07 | 2017-08-18 | 临工集团济南重机有限公司 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
| CN107061388B (en) * | 2017-04-07 | 2018-05-01 | 临工集团济南重机有限公司 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
| CN108412827A (en) * | 2018-05-16 | 2018-08-17 | 湖南星邦重工有限公司 | A kind of hydraulic moving control system |
| CN108412827B (en) * | 2018-05-16 | 2024-03-08 | 湖南星邦智能装备股份有限公司 | Hydraulic walking control system |
| CN110147054A (en) * | 2019-04-22 | 2019-08-20 | 威海华创自动化设备有限公司 | A kind of scissor vehicle electric controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103693592B (en) | 2015-09-30 |
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Address after: 410600 No.128, Jinzhou Avenue East, Ningxiang high tech Development Zone, Changsha City, Hunan Province Patentee after: Hunan Xingbang Intelligent Equipment Co.,Ltd. Address before: 410600, Hunan state industrial park, 128 East Jinzhou Avenue, Jinzhou new district, Hunan, Changsha Patentee before: HUNAN SINOBOOM HEAVY INDUSTRY Co.,Ltd. |
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Denomination of invention: A walking hydraulic system of scissor fork aerial work vehicle Effective date of registration: 20220112 Granted publication date: 20150930 Pledgee: Agricultural Bank of China Limited Ningxiang sub branch Pledgor: Hunan Xingbang Intelligent Equipment Co.,Ltd. Registration number: Y2022430000002 |
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Date of cancellation: 20231110 Granted publication date: 20150930 Pledgee: Agricultural Bank of China Limited Ningxiang sub branch Pledgor: Hunan Xingbang Intelligent Equipment Co.,Ltd. Registration number: Y2022430000002 |