CN103693592B - A kind of scissor-type aerial platform vibration hydraulic system - Google Patents

A kind of scissor-type aerial platform vibration hydraulic system Download PDF

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Publication number
CN103693592B
CN103693592B CN201310338149.6A CN201310338149A CN103693592B CN 103693592 B CN103693592 B CN 103693592B CN 201310338149 A CN201310338149 A CN 201310338149A CN 103693592 B CN103693592 B CN 103693592B
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valve
control valve
way
connects
pressure
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CN103693592A (en
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岳奇
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Hunan Xingbang Intelligent Equipment Co., Ltd
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Hunan Sinoboom Heavy Industry Co Ltd
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Abstract

The invention discloses a kind of scissor-type aerial platform vibration hydraulic system, power unit (2) connects lifting two-position four-way solenoid directional control valve (3), lifting two-position four-way solenoid directional control valve (3) connects pressure-gradient control valve (5), pressure-gradient control valve (5) connection turns to three-position four-way electromagnetic directional valve (6), pressure-gradient control valve (5) is connected walking drg (18) with outlet one tunnel of check valve (13), one tunnel connects three-position four-way electromagnetic directional valve (7), a hydraulic fluid port of three-position four-way electromagnetic directional valve (7) is connected with the first one way sequence valve (10), 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 three-position four-way electromagnetic directional valve (7) connects the second one way sequence valve (11), 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).The present invention is a kind of conserve energy, the scissor-type aerial platform vibration hydraulic system saved production cost.

Description

A kind of scissor-type aerial platform vibration hydraulic system
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 usually to require, and walking has 3 kinds of speed to switch, it is realized by the switching of the hydraulic circuit series and parallel connections between two motors, cause car load at different speeds face travel time hydraulic efficiency pressure system have different pressure.Low speed walking after platform raising, pressure of now walking is minimum, closes, cause vehicle to run non-continuous event when holding during drg meeting.Add balance cock if take two motor oil-feeds place, pressure regulates too high, and during walking, system pressure is too high, causes energy dissipation, substantially reduces 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 saved 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 three-position four-way electromagnetic directional valve, check valve, walking drg, braking pilot operated directional control valve, braking manual pump, three-position four-way electromagnetic directional valve, first running motor, second running motor and return filter, lifting two-position four-way solenoid directional control valve described in described power unit connects, pressure-gradient control valve described in described lifting two-position four-way solenoid directional control valve connects, three-position four-way electromagnetic directional valve is turned to described in described pressure-gradient control valve connects, the braking pilot operated directional control valve of the walking drg described in described pressure-gradient control valve is connected with outlet one tunnel of described check valve and braking manual pump, three-position four-way electromagnetic directional valve described in one tunnel connects, a hydraulic fluid port of described three-position four-way electromagnetic directional valve is connected with the first one way sequence valve, the second running motor described in the first running motor described in the first described one way sequence valve connects also is connected by two-position four-way solenoid directional control valve, a hydraulic fluid port of described three-position four-way electromagnetic directional valve connects the second one way sequence valve, the second running motor described in the second described one way sequence valve connects also passes through described the first running motor described in the connection of two-position four-way solenoid directional control valve, the return filter described in a hydraulic fluid port connection of described three-position four-way electromagnetic directional valve.
Adopt the scissor-type aerial platform vibration hydraulic system of technique scheme; to the protection of drg with use energy-conservation during walking; the one way sequence valve opening pressure by suitable and drg with the use of; when making to walk, hydraulic system pressure remains at drg and opens more than pressure, but is unlikely to hypertonia again.Optimize whole hydraulic efficiency pressure system, control lifting function spool in advance, reduce loss of pressure during lifting action, meet cut the prerequisite of forklift-walking using function under remove redundant valve core, switch to have been come by a spool switching as long as vehicle travels high low speed, reduce the local pressure loss of hydraulic efficiency pressure system when walking and lose along stroke pressure, conserve energy, improve the period of service after vehicle single charge, also save productive costs widely simultaneously.
Compared with prior art, the invention has the advantages that: keep certain system pressure to ensure that drg is always in open mode when vehicle to run, hydraulic system pressure is not too high again simultaneously, hydraulic system pressure when reducing lifting and walk, 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.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
See 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 three-position four-way electromagnetic directional valve 6, three-position four-way electromagnetic directional 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, first running motor 17, walking drg 18, elevating ram 19, steering cylinder 20, first electromagnetic valve 23, second electromagnetic valve 24, constant flow spool 25, balance cock 26, shutoff valve 27, 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 block, main system pressure is controlled by by pass valve 15, steering cylinder 20 is entered again through a part of flow of pressure-gradient control valve 5, another part enters main hydraulic system, steering pressure controls by turning to by pass valve 14, pressure oil enters three-position four-way electromagnetic directional valve 7 through lifting two-position four-way solenoid directional control valve 3 again, wherein shuttle valve 21 is got oil and is entered braking pilot operated directional control valve 8 and walking drg 18 opened by braking manual pump 9, walking is moved forward and backward and to be controlled by three-position four-way electromagnetic directional valve 7.During low speed walking, hydraulic oil enters two running motors respectively 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 another one motor then oil sump tank through the first electromagnetic valve 23 again by the second electromagnetic valve 24 and motor, now two running motors series connection.Realized by the switching of the hydraulic circuit series and parallel connections between two running motors, cause car load at different speeds face travel time hydraulic efficiency pressure system have different pressure.Low speed walking after platform raising, pressure of now walking is minimum, closes, cause vehicle to run non-continuous event when holding during the meeting of walking drg 18.Add balance cock 26 if take two running motor oil-feeds place, pressure regulates too high, and during walking, system pressure is too high, causes energy dissipation, substantially reduces the period of service after Vehicular charging.
See 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 cylinder 20 turns to three-position four-way electromagnetic directional valve 6, steering cylinder 20 is provided with check valve 13 and turns to by pass valve 14, pressure-gradient control valve 5 is connected braking pilot operated directional control valve 8 and the braking manual pump 9 of walking drg 18 with outlet one tunnel of check valve 13, one tunnel is connected with three-position four-way electromagnetic directional valve 7, a hydraulic fluid port of three-position four-way electromagnetic directional valve 7 is connected with the first one way sequence valve 10, 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 three-position four-way electromagnetic directional valve 7 connects the second one way sequence valve 11, 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 three-position four-way electromagnetic directional valve 7 connects return filter 16, by pass valve 15 is connected with between power unit 2 and return filter 16.
See Fig. 2; originally provide scissor-type aerial platform vibration hydraulic system walking time to walking drg 18 protection and use energy-conservation; the first one way sequence valve 10 opening pressure by suitable and the second one way sequence valve 11 and walking drg 18 with the use of; when making to walk, hydraulic system pressure remains at walking drg 18 and opens more than pressure, but is unlikely to hypertonia again.Optimize whole hydraulic efficiency pressure system, controlling the lifting two-position four-way solenoid directional control valve 3 of elevating ram 19 lifting function in advance, reduce loss of pressure during lifting action, meet cut the prerequisite of forklift-walking using function under remove redundant valve core, switch to have been come by a spool switching as long as vehicle travels high low speed, reduce the local pressure loss of hydraulic efficiency pressure system when walking and lose along stroke pressure, conserve energy, improve the period of service after vehicle single charge, also save productive costs widely 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 three-position four-way electromagnetic directional valve (6), check valve (13), walking drg (18), braking pilot operated directional control valve (8), braking manual pump (9), three-position four-way electromagnetic directional valve (7), first running motor (17), second running motor (29) and return filter (16), it is characterized in that: the lifting two-position four-way solenoid directional control valve (3) described in described power unit (2) connects, pressure-gradient control valve (5) described in described lifting two-position four-way solenoid directional control valve (3) connects, three-position four-way electromagnetic directional valve (6) is turned to described in described pressure-gradient control valve (5) connects, the braking pilot operated directional control valve (8) of the walking drg (18) described in described pressure-gradient control valve (5) is connected with outlet one tunnel of described check valve (13) and braking manual pump (9), three-position four-way electromagnetic directional valve (7) described in one tunnel connects, a hydraulic fluid port of described three-position four-way electromagnetic directional valve (7) is connected with the first one way sequence valve (10), the first running motor (17) described in described the first one way sequence valve (10) connects the second running motor (29) described in being connected by two-position four-way solenoid directional control valve (12), a hydraulic fluid port of described three-position four-way electromagnetic directional valve (7) connects the second one way sequence valve (11), the second running motor (29) described in described the second one way sequence valve (11) connects also passes through described the first running motor (17) described in two-position four-way solenoid directional control valve (12) connection, the return filter (16) described in a hydraulic fluid port connection of described three-position four-way electromagnetic directional valve (7).
CN201310338149.6A 2013-08-06 2013-08-06 A kind of scissor-type aerial platform vibration hydraulic system Active CN103693592B (en)

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Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
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
CN105114379B (en) * 2015-09-30 2017-05-10 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
CN106976825B (en) * 2017-04-01 2018-12-14 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
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
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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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
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WO2004083689A1 (en) * 2003-03-18 2004-09-30 Kobelco Cranes Co., Ltd. Hydraulic travel drive device and motor vehicle with hydraulic travel drive
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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.

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

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