CN201816452U - Hydraulic traveling gear for hybrid electric forklift - Google Patents
Hydraulic traveling gear for hybrid electric forklift Download PDFInfo
- Publication number
- CN201816452U CN201816452U CN2010202693257U CN201020269325U CN201816452U CN 201816452 U CN201816452 U CN 201816452U CN 2010202693257 U CN2010202693257 U CN 2010202693257U CN 201020269325 U CN201020269325 U CN 201020269325U CN 201816452 U CN201816452 U CN 201816452U
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- hydraulic
- pump motor
- oil
- forklift
- right wheel
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Abstract
The utility model relates to a hydraulic traveling gear for a hybrid electric forklift, belonging to hydraulic traveling gears. An engine of the traveling gear is connected with a hydraulic variable pump, an oil outlet of the hydraulic variable pump is connected with an oil inlet of a check valve, an oil outlet of the check valve and an oil port of a high-pressure hydraulic accumulator are simultaneously connected with an oil outlet of a right wheel driving pump motor and an oil outlet of a left wheel driving pump motor, an oil suction opening of the hydraulic variable pump and an oil port of a low-pressure hydraulic accumulator are simultaneously connected with an oil suction opening of the right wheel driving pump motor and an oil suction opening of the left wheel driving pump motor, the right wheel is driven by the right wheel driving pump motor through a right speed reducer installed on the wheel, and the left wheel is driven by the left wheel driving pump motor through a left speed reducer installed on the wheel. The hydraulic traveling gear for the hybrid electric forklift has the advantages of replacing the traditional mechanical driving device of the forklift with hydraulic transmission, dispensing with a speed changer, recycling the braking power of the forklift, reducing the oil consumption and the exhaust emission of the forklift, improving the driveability of the forklift and having simple structure and flexible configuration of the entire forklift.
Description
Technical field
The utility model relates to a kind of hydraulic moving device of hydraulic moving device, particularly a kind of hybrid power forklift.
Background technology
Along with developing rapidly of industrial technology in the world wide, energy shortage and problem of environmental pollution also are on the rise.The fork truck average ground speed is low, and maximum speed is not high yet, and often needs braking, deceleration, so oil consumption height, the exhaust emissions of car load are serious.The hydraulic hybrid technology is considered to one of effective scheme that solves energy shock and problem of environmental pollution, and with respect to the electric hybrid powering technology, it is big that hydraulic hybrid has power density, the energy recovery efficiency advantages of higher.In the recoverable energy of fork truck, vehicle braked kinetic energy is apparently higher than the weight potential energy of goods, so the energy recovery emphasis of hybrid power forklift is a braking kinetic energy.Hybrid power forklift generally adopts storage battery as energy recovery unit, and the high internal resistance and the low power density of storage battery can only partially recycled braking kinetic energies, and have problems such as old and useless battery treatment difficulty.Still there are many problems in existing hybrid power system at aspects such as energy-conserving and environment-protective performance, practicality.
The utility model content
The purpose of this utility model is to provide a kind of: the fork truck oil consumption is low, the hydraulic moving device of the hybrid power forklift that the fork truck overall performance is high.
The purpose of this utility model is achieved in that running gear is made up of driving engine, hydraulic variable displacement pump, high-pressure hydraulic accumulator, check valve, right wheel, right retarder, right wheel drive pump motor, revolver driving pump motor, left retarder, left wheel and low pressure accumulator;
Driving engine is connected with hydraulic variable displacement pump, the oil outlet of hydraulic variable displacement pump is connected with the oil inlet of check valve, the oil outlet of check valve is connected with the oil outlet of right wheel drive pump motor and the oil outlet of revolver driving pump motor with the hydraulic fluid port of high-pressure hydraulic accumulator simultaneously, the hydraulic fluid port of the oil suction of hydraulic variable displacement pump and low-pressure hydraulic energy storage is connected with the oil suction of right wheel drive pump motor and the oil suction of revolver driving pump motor simultaneously, right wheel drive pump motor drives right wheel by the right retarder that is installed on the wheel, and revolver driving pump motor drives right wheel by the left retarder that is installed on the wheel.
Described driving engine is conventional driving engine.
Beneficial effect, owing to adopted such scheme, the engine drive hydraulic variable displacement pump provides high pressure fuel source for car load, high pressure fuel source drives left and right sides wheel pump motor operations, for car load provides power.
(1) when normal vehicle operation, the engine drive hydraulic variable displacement pump provides the power oil sources for car load, and wheel limit CD-ROM drive motor is by the retarder drive wheels, and then the driving fork truck travels.
When (2) moveing backward, the engine drive hydraulic variable displacement pump utilizes hydraulic pump motor can work in four-quadrant feature for car load provides the power oil sources, wheel limit driving pump motor contrarotation, and then realize the fork truck backward going.
(3) glancing impact, wheel limit driving pump motor operations is in the pump operating mode, to the high pressure accumulator feedback energy.If the maximum braking torque that hydraulic pump/motor provides can not satisfy the target braking torque of complete machine, friction braking system provides remaining brake torque.
When (4) starting, hydraulic pump motor works in the motor operating mode, and high-pressure hydraulic accumulator provides high pressure fuel source for hydraulic pump motor, engine shutdown.When the pressure in the hydraulic accumulator during near minimum operating pressure, engine starting drives hydraulic variable displacement pump and provides propulsion source for car load, drives hydraulic pump motor work, and then drives fork truck.
The hydraulic moving device of hybrid power forklift uses hydostatic transmission to substitute the mechanical drive of traditional fork truck, has cancelled change-speed box, reclaims the braking kinetic energy of vehicle, reduce the oil consumption and the exhaust emissions amount of vehicle, the fork truck oil consumption is low, and fork truck overall performance height has reached the purpose of this utility model.
The utility model has the advantages that: the hydraulic moving device of hybrid power forklift uses hydostatic transmission to substitute the mechanical drive of traditional fork truck, cancelled change-speed box, reclaim the braking kinetic energy of vehicle, avoid the regional work of engine operation in high oil consumption, maximum discharge, reduce the oil consumption and the exhaust emissions of vehicle, improve the driving performance of fork truck.Also have simultaneously simple in structure, advantage such as the car load layout is flexible.
Description of drawings
Fig. 1 is the structural representation of the hydraulic moving device of a kind of hybrid power forklift of the utility model.
Among the figure, 1, driving engine; 2, hydraulic variable displacement pump; 3, high-pressure hydraulic accumulator; 4, check valve; 5, right wheel; 6, right retarder; 7, right wheel drive pump motor; 8, revolver driving pump motor; 9, left retarder; 10, left wheel; 11, low pressure accumulator 12.
The specific embodiment
Embodiment 1: running gear is made up of driving engine 1, hydraulic variable displacement pump 2, high-pressure hydraulic accumulator 3, check valve 4, right wheel 5, right retarder 6, right wheel drive pump motor 7, revolver driving pump motor 8, left retarder 9, left wheel 10 and low pressure accumulator 11.
Described driving engine is conventional driving engine.
Claims (1)
1. the hydraulic moving device of a hybrid power forklift, it is characterized in that: running gear is made up of driving engine, hydraulic variable displacement pump, high-pressure hydraulic accumulator, check valve, right wheel, right retarder, right wheel drive pump motor, revolver driving pump motor, left retarder, left wheel and low pressure accumulator;
Driving engine is connected with hydraulic variable displacement pump, the oil outlet of hydraulic variable displacement pump is connected with the oil inlet of check valve, the oil outlet of check valve is connected with the oil outlet of right wheel drive pump motor and the oil outlet of revolver driving pump motor with the hydraulic fluid port of high-pressure hydraulic accumulator simultaneously, the hydraulic fluid port of the oil suction of hydraulic variable displacement pump and low-pressure hydraulic energy storage is connected with the oil suction of right wheel drive pump motor and the oil suction of revolver driving pump motor simultaneously, right wheel drive pump motor drives right wheel by the right retarder that is installed on the wheel, and revolver driving pump motor drives right wheel by the left retarder that is installed on the wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202693257U CN201816452U (en) | 2010-07-16 | 2010-07-16 | Hydraulic traveling gear for hybrid electric forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202693257U CN201816452U (en) | 2010-07-16 | 2010-07-16 | Hydraulic traveling gear for hybrid electric forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201816452U true CN201816452U (en) | 2011-05-04 |
Family
ID=43914418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202693257U Expired - Lifetime CN201816452U (en) | 2010-07-16 | 2010-07-16 | Hydraulic traveling gear for hybrid electric forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201816452U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080675A (en) * | 2010-12-13 | 2011-06-01 | 徐州重型机械有限公司 | Wheeled crane and hydraulic control system and pump/motor control circuit thereof |
| CN102897025A (en) * | 2012-10-30 | 2013-01-30 | 路文强 | Hydraulic driven engine |
| CN105502230A (en) * | 2016-01-21 | 2016-04-20 | 安徽农业大学 | Hybrid power forklift transmission system |
| CN105564395A (en) * | 2016-02-29 | 2016-05-11 | 浙江吉利汽车研究院有限公司 | Series connection type hydraulic automobile regenerative braking energy recycling system |
-
2010
- 2010-07-16 CN CN2010202693257U patent/CN201816452U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080675A (en) * | 2010-12-13 | 2011-06-01 | 徐州重型机械有限公司 | Wheeled crane and hydraulic control system and pump/motor control circuit thereof |
| CN102080675B (en) * | 2010-12-13 | 2013-06-05 | 徐州重型机械有限公司 | Wheeled crane and hydraulic control system and pump/motor control circuit thereof |
| CN102897025A (en) * | 2012-10-30 | 2013-01-30 | 路文强 | Hydraulic driven engine |
| CN105502230A (en) * | 2016-01-21 | 2016-04-20 | 安徽农业大学 | Hybrid power forklift transmission system |
| CN105502230B (en) * | 2016-01-21 | 2017-10-27 | 安徽农业大学 | A kind of hybrid power forklift transmission system |
| CN105564395A (en) * | 2016-02-29 | 2016-05-11 | 浙江吉利汽车研究院有限公司 | Series connection type hydraulic automobile regenerative braking energy recycling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |
|
| CX01 | Expiry of patent term |