CN201685704U - Electric forklift hydraulic device used with single power source - Google Patents

Electric forklift hydraulic device used with single power source Download PDF

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Publication number
CN201685704U
CN201685704U CN201020159576XU CN201020159576U CN201685704U CN 201685704 U CN201685704 U CN 201685704U CN 201020159576X U CN201020159576X U CN 201020159576XU CN 201020159576 U CN201020159576 U CN 201020159576U CN 201685704 U CN201685704 U CN 201685704U
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China
Prior art keywords
valve
oil
communicated
feeding line
hydraulic
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Expired - Fee Related
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CN201020159576XU
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Chinese (zh)
Inventor
高洪
赵雪松
李震
王建彬
肖平
贾文友
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Anhui Polytechnic University
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Anhui University of Science and Technology
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Priority to CN201020159576XU priority Critical patent/CN201685704U/en
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Publication of CN201685704U publication Critical patent/CN201685704U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an electric forklift hydraulic device used with a single power source, which comprises a power mechanism, a priority distribution mechanism, a steering mechanism, a multi-way valve, a driving walking mechanism, a lifting mechanism, a tilting mechanism and an oil tank. The power mechanism consists of a motor, a speed reducer and a gear pump connected in series. The priority distribution mechanism consists of a distribution valve. The multi-way valve consists of three three-position six-way electromagnetic valves connected onto a main oil supply circuit in series, the three three-position six-way electromagnetic valves include a walking valve, a lifting valve and a tilting valve, the walking valve is communicated with a hydraulic motor to form the driving walking mechanism, the lifting valve is communicated with a lifting oil cylinder to form the lifting mechanism, and the slanting valve is communicated with a tilting cylinder to form the tilting mechanism. The electric forklift hydraulic device adopts the single motor to realize multi-way hydraulic control of tilting, lifting, steering and driving and walking for an electric forklift, and is simple in structure, high in working reliability and low in production cost.

Description

A kind of and the supporting electri forklift hydraulic efficiency gear of single power source
Technical field
The utility model belongs to the fork truck hydraulic efficiency gear, is specifically related to a kind of and the supporting electri forklift hydraulic efficiency gear of single power source.
Background technology
The fork truck that generally uses has all adopted multiple-motor or multi power source in the market, as hoists, tilts and use an electrical motor (or primary mover) with turning to, and driving walks adopts electrical motor (or primary mover) or the like again.Though the multi power source scheme is simple and practical, be not easy to the integrated of control system.And in the electri forklift design, the monomotor design plan then is to represent the WeiLai Technology developing direction, multiple new and high technology organic integration, as to have high technical value added new design, obviously can improve this series products core competitiveness.
In the electri forklift design, the main points of monomotor design plan are: only adopt an electrical motor, tilt and hoist, drive systems such as walking, servo-steering propulsion source is provided to door frame.Door frame tilt with hoist, servo-steering all adopts hydraulic transmission technology, drive walking and then adopt machinery and hydrostatic drive integrated technique.Form door frame inclined lift executive device by lift oil tank and dump ram; By steering yoke bolt, steering swivel and the steering hardware that turns to oil cylinder to form; By HM Hydraulic Motor and be arranged on HM Hydraulic Motor drg on the HM Hydraulic Motor and walking driving and driving device that HM Hydraulic Motor governor valve, power-transfer clutch, retarder and diff are formed.By the single oil pump feed of single motor-driven and the design hydraulic efficiency pressure system of output along separate routes, realize the inclination of electri forklift and hoist, turn to and drive multichannel fluid control such as walking.
The utility model provides a kind of and above-mentioned " monomotor (or single power source) design plan " complete supporting electri forklift hydraulic efficiency gear, the reasonably integrated mechanical-electrical-hydraulic integration technology that is in mechanical engineering subject forward position, can realize the integrated control that turns to, drive walking, tilt and hoist, and simple in structure, the reliability height.
The utility model content
In order to overcome in the electri forklift, the multi power source scheme is not easy to the integrated weakness of control system, and the utility model provides a kind of and the supporting electri forklift hydraulic efficiency gear of single power source.
The technical essential of this hydraulic efficiency gear is " single oil pump feed; output and HM Hydraulic Motor are connected machine-walking along separate routes ", promptly, the Hydraulic Pump of function that Hydraulic Pump, the realization that will realize " tilt and hoist and turn to " function " drives walking " is integrated into a Hydraulic Pump that power is provided by monomotor, adopt multiway valve that pressure oil is exported along separate routes, adopt the input element of HM Hydraulic Motor, realize the organic linking of hydraulic efficiency pressure system and mechanical system as common mechanical drive running device.
Concrete structure design plan of the present utility model is as follows:
The supporting electri forklift hydraulic efficiency gear of a kind of and single power source comprises actuating unit, preferential diversion mechanism, steering hardware, multiway valve, driving traveling gear, lifting mechanism, leaning device and fuel tank;
Described actuating unit is made up of series connected electrical motor 13, retarder 12 and gear type pump 11, and the oil inlet of gear type pump 11 is being communicated with fuel tank, and the fuel tank opposite side is being communicated with oil return line;
Described preferential diversion mechanism is made up of flow divider valve 10, and the oil inlet of flow divider valve 10 is being communicated with the oil outlet of gear type pump 11, and the right oil outlet of flow divider valve 10 is being communicated with main oil feeding line 16A; The left oil outlet of flow divider valve 10 is being communicated with hydraulic steering gear 15;
Described multiway valve is made up of three three six three-way electromagnetic valves that are connected on the main oil feeding line 16A, and described three three six three-way electromagnetic valves are respectively walking valve 7, play lift valve 5 and inclined valve 2; The return opening of described walking valve 7, a lift valve 5 and inclined valve 2 is being communicated with fuel tank through oil return line respectively;
The oil inlet of walking valve 7 is being communicated with main oil feeding line 16A by the first shunt oil feeding line 16B, and its other two oil outlets are being communicated with HM Hydraulic Motor 6 respectively, constitute to drive traveling gear;
The oil inlet that plays lift valve 5 by second along separate routes oil feeding line 16C be communicated with main oil feeding line 16A, its another oil outlet is being communicated with the cavity of resorption of hoist cylinder 3 by governor valve 4, the epicoele of hoist cylinder 3 is being communicated with oil return line, constitutes lifting mechanism;
The oil inlet of inclined valve 2 is being communicated with main oil feeding line 16A by the 3rd shunt oil feeding line 16D, and its other two oil outlets are being communicated with the chamber, the left and right sides of dump ram 1 respectively, constitute leaning device;
Described steering hardware is by the hydraulic steering gear 15 of parallel connection and turn to oil cylinder 14 to form, and other two interfaces of hydraulic steering gear 15 are being communicated with the left oil outlet of oil return line and flow divider valve 10 respectively.
In parallel reducing valve 9 and safety valve 8 between main oil feeding line 16A and the oil return line.
Useful technique effect compared with prior art of the present utility model embodies in the following areas:
(1) supporting fully with " monomotor design plan ", it is integrated to be convenient to control system, the reliability height.
The Hydraulic Pump of function that Hydraulic Pump, the realization that (2) will realize " tilt and hoist and turn to " function " drives walking " is integrated into one and provides the Hydraulic Pump of power by electrical motor, has reduced electrical motor, has improved the reliability of system, has reduced cost.
(3) adopt the input element of HM Hydraulic Motor, realize the organic linking of hydraulic efficiency pressure system and mechanical system, improved the technical value added of product as common mechanical drive running device.
Description of drawings
Fig. 1 is a hydraulic scheme of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1, the supporting electri forklift hydraulic efficiency gear of a kind of and single power source comprises actuating unit, preferential diversion mechanism, steering hardware, multiway valve, driving traveling gear, lifting mechanism, leaning device and fuel tank.
Actuating unit is made up of series connected electrical motor 13, retarder 12 and gear type pump 11, and the oil inlet of gear type pump 11 is being communicated with fuel tank, and the fuel tank opposite side is being communicated with oil return line;
Preferential diversion mechanism is made up of flow divider valve 10, and the oil inlet of flow divider valve 10 is being communicated with the oil outlet of gear type pump 11, and the right oil outlet of flow divider valve 10 is being communicated with main oil feeding line 16A; The left oil outlet of flow divider valve 10 is being communicated with hydraulic steering gear 15.
Multiway valve 16 is made up of three three six three-way electromagnetic valves that are connected on the main oil feeding line 16A, and three three six three-way electromagnetic valves are respectively walking valve 7, play lift valve 5 and inclined valve 2; The return opening of walking valve 7, a lift valve 5 and inclined valve 2 is being communicated with fuel tank through oil return line respectively;
The oil inlet of walking valve 7 is being communicated with main oil feeding line 16A by the first shunt oil feeding line 16B, and its other two oil outlets are being communicated with HM Hydraulic Motor 6 respectively, constitute to drive traveling gear;
The oil inlet that plays lift valve 5 by second along separate routes oil feeding line 16C be communicated with main oil feeding line 16A, its another oil outlet is being communicated with the cavity of resorption of hoist cylinder 3 by governor valve 4, the epicoele of hoist cylinder 3 is being communicated with oil return line, constitutes lifting mechanism;
The oil inlet of inclined valve 2 is being communicated with main oil feeding line 16A by the 3rd shunt oil feeding line 16D, and its other two oil outlets are being communicated with the chamber, the left and right sides of dump ram 1 respectively, constitute leaning device;
Steering hardware is by the hydraulic steering gear 15 of parallel connection and turn to oil cylinder 14 to form, and other two interfaces of hydraulic steering gear 15 are being communicated with the left oil outlet of oil return line and flow divider valve 10 respectively.
In parallel reducing valve 9 and safety valve 8 between the oil return line of main oil feeding line 16A and logical fuel tank.
When communicating with the walking valve 7 that is in meta simultaneously, a lift valve 5 and inclined valve 2, main oil feeding line 16A forms oil return.
During use, electrical motor 13 is through retarder 12 back driven gear pump 11 motions of slowing down, and from the fuel tank sucking-off, be divided into two-way after being pressed into flow divider valve 10 by oil pipe: the one tunnel preferentially to hydraulic steering gear 15, supplies with to turn to oil cylinder 14, and assurance turns to needs with fluid.Another Lu Jingzhu oil feeding line 16A, the first shunt oil feeding line 16B, the second shunt oil feeding line 16C and the 3rd oil feeding line 16D along separate routes communicate, the action of walking valve 7 and inclined valve 2 difference modulated pressure motors 6 and dump ram 1, the pressure of 6 two hydraulic fluid ports of two overflow check valve groups difference modulated pressure motors that are attached thereto and the pressure of 1 two hydraulic fluid ports of dump ram, and play slow supply oil.An oil outlet that plays lift valve 5 is normally closed; another hydraulic fluid port is connected to hoist cylinder 3 by governor valve 4; the oil outlet of hoist cylinder 3 directly communicates with fuel tank; the charge oil pressure of overflow check valve and governor valve 4 control hoist cylinders 3; the setting of safety valve 8 both can have been satisfied the pressure requirement of vehicle climbing; the restriction system maximum pressure plays the safety guard-safeguard effect again.When the delivery pressure of reducing valve 9 was certain value, the pressure oil of exporting with oil outlet moved for the low pressure aux. controls.

Claims (2)

  1. One kind with the supporting electri forklift hydraulic efficiency gear of single power source, it is characterized in that: comprise actuating unit, preferential diversion mechanism, steering hardware, multiway valve, driving traveling gear, lifting mechanism, leaning device and fuel tank;
    Described actuating unit is made up of series connected electrical motor (13), retarder (12) and gear type pump (11), and the oil inlet of gear type pump (11) is being communicated with fuel tank, and the fuel tank opposite side is being communicated with oil return line;
    Described preferential diversion mechanism is made up of flow divider valve (10), and the oil inlet of flow divider valve (10) is being communicated with the oil outlet of gear type pump (11), and the right oil outlet of flow divider valve (10) is being communicated with main oil feeding line (16A); The left oil outlet of flow divider valve (10) is being communicated with hydraulic steering gear (15);
    Described multiway valve is made up of three three six three-way electromagnetic valves that are connected on the main oil feeding line (16A), and described three three six three-way electromagnetic valves are respectively walking valve (7), play lift valve (5) and inclined valve (2); The return opening of described walking valve (7), a lift valve (5) and inclined valve (2) is being communicated with fuel tank through oil return line respectively;
    The oil inlet of walking valve (7) is being communicated with main oil feeding line (16A) by the first shunt oil feeding line (16B), and its other two oil outlets are being communicated with HM Hydraulic Motor (6) respectively, constitutes to drive traveling gear;
    The oil inlet that plays lift valve (5) is being communicated with main oil feeding line (16A) by the second shunt oil feeding line (16C), its another oil outlet is being communicated with the cavity of resorption of hoist cylinder (3) by governor valve (4), the epicoele of hoist cylinder (3) is being communicated with oil return line, constitutes lifting mechanism;
    The oil inlet of inclined valve (2) is being communicated with main oil feeding line (16A) by the 3rd shunt oil feeding line (16D), and its other two oil outlets are being communicated with the chamber, the left and right sides of dump ram (1) respectively, constitute leaning device;
    Described steering hardware is by the hydraulic steering gear (15) of parallel connection and turn to oil cylinder (14) to form, and two interfaces in addition of hydraulic steering gear (15) are being communicated with the left oil outlet of oil return line and flow divider valve (10) respectively.
  2. 2. a kind of and the supporting electri forklift hydraulic efficiency gear of single power source according to claim 1 is characterized in that: in parallel reducing valve (9) and safety valve (8) between main oil feeding line (16A) and the oil return line.
CN201020159576XU 2010-04-14 2010-04-14 Electric forklift hydraulic device used with single power source Expired - Fee Related CN201685704U (en)

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Application Number Priority Date Filing Date Title
CN201020159576XU CN201685704U (en) 2010-04-14 2010-04-14 Electric forklift hydraulic device used with single power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102120447A (en) * 2011-03-04 2011-07-13 安徽合力股份有限公司 Forklift hydraulic system matched with multi-functional wet brakes
CN105329817A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Single-pump hydraulic system used for forklift
CN105329314A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Storage battery electric forklift integrating hydraulic pump and steering pump
CN105437964A (en) * 2015-11-23 2016-03-30 山东力士泰装备制造有限公司 Hydrostatic four-wheel drive system for trackless rubber-tyred command vehicle
CN106168237A (en) * 2016-09-14 2016-11-30 河南瑞创通用机械制造有限公司 A kind of tractor hydraulic system assembly
CN106515419A (en) * 2016-12-21 2017-03-22 景德镇陶瓷大学 Oil-electric hybrid forklift
CN106629487A (en) * 2016-12-21 2017-05-10 景德镇陶瓷大学 Forklift
CN105370650B (en) * 2015-11-26 2017-06-16 广西柳工机械股份有限公司 Shunting pressure-gradient control valve
CN109231091A (en) * 2018-09-28 2019-01-18 国家电网公司 A kind of cable maintenance lift truck
CN113086898A (en) * 2021-04-13 2021-07-09 安徽皖南新维电机有限公司 Walking and lifting two-in-one composite motor for oil-to-electricity forklift

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102120447A (en) * 2011-03-04 2011-07-13 安徽合力股份有限公司 Forklift hydraulic system matched with multi-functional wet brakes
CN105437964A (en) * 2015-11-23 2016-03-30 山东力士泰装备制造有限公司 Hydrostatic four-wheel drive system for trackless rubber-tyred command vehicle
CN105370650B (en) * 2015-11-26 2017-06-16 广西柳工机械股份有限公司 Shunting pressure-gradient control valve
CN105329314A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Storage battery electric forklift integrating hydraulic pump and steering pump
CN105329817A (en) * 2015-12-04 2016-02-17 安徽合叉叉车有限公司 Single-pump hydraulic system used for forklift
CN105329817B (en) * 2015-12-04 2018-08-17 安徽合叉叉车有限公司 A kind of single pump hydraulic system of fork truck
CN106168237A (en) * 2016-09-14 2016-11-30 河南瑞创通用机械制造有限公司 A kind of tractor hydraulic system assembly
CN106168237B (en) * 2016-09-14 2018-06-12 河南瑞创通用机械制造有限公司 A kind of tractor hydraulic system assembly
CN106515419A (en) * 2016-12-21 2017-03-22 景德镇陶瓷大学 Oil-electric hybrid forklift
CN106629487A (en) * 2016-12-21 2017-05-10 景德镇陶瓷大学 Forklift
CN109231091A (en) * 2018-09-28 2019-01-18 国家电网公司 A kind of cable maintenance lift truck
CN113086898A (en) * 2021-04-13 2021-07-09 安徽皖南新维电机有限公司 Walking and lifting two-in-one composite motor for oil-to-electricity forklift

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C56 Change in the name or address of the patentee

Owner name: ANHUI POLYTECHNIC UNIVERSITY

Free format text: FORMER NAME: ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE

CP01 Change in the name or title of a patent holder

Address after: 241000 Anhui city of Wuhu province Zheshan Road No. 8

Patentee after: Anhui Polytechnic University

Address before: 241000 Anhui city of Wuhu province Zheshan Road No. 8

Patentee before: Anhui University of Technology and Science

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101229

Termination date: 20120414