CN105329314A - Storage battery electric forklift integrating hydraulic pump and steering pump - Google Patents
Storage battery electric forklift integrating hydraulic pump and steering pump Download PDFInfo
- Publication number
- CN105329314A CN105329314A CN201510877754.XA CN201510877754A CN105329314A CN 105329314 A CN105329314 A CN 105329314A CN 201510877754 A CN201510877754 A CN 201510877754A CN 105329314 A CN105329314 A CN 105329314A
- Authority
- CN
- China
- Prior art keywords
- valve
- control valve
- pump
- steering
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a storage battery electric forklift integrating a hydraulic pump and a steering pump. The storage battery electric forklift comprises a lifting oil cylinder, a steering oil cylinder, a gear pump, a hydraulic oil tank and a driving motor, and the gear pump and the hydraulic oil tank are used for providing high-pressure oil for the lifting oil cylinder and the steering oil cylinder, and the driving motor drives the gear pump and is provided with a motor speed controller. A flow limiting reversing valve, a multi-way reversing valve and a steering gear are further included, the oil inlet end of the gear pump is connected with the oil outlet end of the hydraulic oil tank, the oil outlet end of the gear pump is connected with the flow limiting reversing valve, the multi-way reversing valve and the steering gear are both connected with the flow limiting reversing valve, the multi-way reversing valve and the steering gear are both connected with the oil return end of the hydraulic oil tank, the flow limiting reversing valve and the gear pump are both connected with the oil return end of the hydraulic oil tank in parallel, the lifting oil cylinder is connected with the multi-way reversing valve, and the steering oil cylinder is connected with the steering gear. The forklift is simpler in structure and reliable in work.
Description
Technical field
The present invention relates to the battery electric forklift truck of a kind of Hydraulic Pump and steering pump unification, belong to fork truck manufacturing technology field.
Background technology
In prior art, the battery electric forklift truck that battery electric forklift truck manufacturing firm manufactures and designs, it turns to, hydraulic lifting drives the driving of steering pump, hydraulic electric motor to hoist pump to realize the action that hoists of fork-truck steering and goods by steer motor respectively; Specifically: be exactly that hydraulic steering power-assisted system and hydraulic lifting system are independent mutually, respectively have a set of control system, motor and pump.From economy, this design configurations cost is higher, is a kind of waste of resource; Complicated fork lift truck structure.
Summary of the invention
The present invention, just for the deficiency that prior art exists, provides the battery electric forklift truck of a kind of Hydraulic Pump and steering pump unification, meets actual operation requirements.
For solving the problem, the technical solution used in the present invention is as follows:
The battery electric forklift truck of a kind of Hydraulic Pump and steering pump unification, comprise lift oil tank, steering cylinder, with the gear type pump and the hydraulic reservoir that provide high-voltage oil liquid for described lift oil tank, described steering cylinder, and driving the drive motor of described gear type pump, described drive motor is provided with electric motor speed controller;
Also comprise current limliting change-over valve, multiple directional control valve and deflector, the oil inlet end of described gear type pump connects the oil outlet end of described hydraulic reservoir, the oil outlet end of described gear type pump connects described current limliting change-over valve, described multiple directional control valve and described deflector are all connected with described current limliting change-over valve, described multiple directional control valve is all connected with the oil revolving end of described hydraulic reservoir with described deflector, and described current limliting change-over valve and described gear type pump are all in parallel with the oil revolving end of described hydraulic reservoir, described lift oil tank is connected with described multiple directional control valve, described steering cylinder is connected with described deflector.
As the improvement of technique scheme, described multiple directional control valve comprises the first reversing control valve for controlling described lift oil tank, described first reversing control valve is connected with described current limliting change-over valve, and described first reversing control valve is connected with the oil revolving end of described hydraulic reservoir, described lift oil tank is connected with described first reversing control valve.
As the improvement of technique scheme, be provided with single-way flow restricting valve between described lift oil tank and described first reversing control valve, and be also provided with shutoff valve between described single-way flow restricting valve and described lift oil tank.
As the improvement of technique scheme, also comprise dump ram; Described multiple directional control valve also comprises the second reversing control valve for controlling described dump ram.
As the improvement of technique scheme, described multiple directional control valve also comprises the first by pass valve, described first by pass valve and described first reversing control valve, described second reversing control valve C/LOOP in series.
As the improvement of technique scheme, described multiple directional control valve also comprises the first check valve for connecting described first reversing control valve and the second check valve for being connected described second reversing control valve, and described first check valve and described second check valve parallel with one another.
As the improvement of technique scheme, between described steering cylinder and described deflector, be provided with the 3rd check valve, the 4th check valve, the second by pass valve and the 3rd by pass valve; Be provided with the 5th check valve and the 4th by pass valve between described deflector and described current limliting change-over valve, and described deflector and the parallel connection of described current limliting change-over valve are connected the oil revolving end of described hydraulic reservoir afterwards by described 4th by pass valve.
As the improvement of technique scheme, between the oil inlet end of described gear type pump and the oil outlet end of described hydraulic reservoir, be provided with oil filter.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
The battery electric forklift truck of Hydraulic Pump of the present invention and steering pump unification, cost is low, reliable operation, makes fork lift truck structure simpler simultaneously, reduces assembly process, improve Business Economic Benefit.
Accompanying drawing explanation
Fig. 1 is the battery electric forklift truck structural representation of Hydraulic Pump of the present invention and steering pump unification.
Detailed description of the invention
Below in conjunction with specific embodiments content of the present invention is described.
As shown in Figure 1, the battery electric forklift truck structural representation of the Hydraulic Pump provided for the present embodiment and steering pump unification.
The present embodiment provides the battery electric forklift truck of Hydraulic Pump and steering pump unification, comprises lift oil tank 1, steering cylinder 2, and provides gear type pump 3 and the hydraulic reservoir 31 of high-voltage oil liquid for lift oil tank 1, steering cylinder 2, and the drive motor 32 of driving gear pump 3; Be provided with oil filter 33 between the oil inlet end of gear type pump 3 and the oil outlet end of hydraulic reservoir 31, drive motor 32 is provided with electric motor speed controller.
Also comprise current limliting change-over valve 4, multiple directional control valve 5 and deflector 6, the oil inlet end of gear type pump 3 connects the oil outlet end of hydraulic reservoir 31, the oil outlet end of gear type pump 3 connects current limliting change-over valve 4, multiple directional control valve 5 is all connected with current limliting change-over valve 4 with deflector 6, multiple directional control valve 5 is all connected with the oil revolving end of hydraulic reservoir 31 with deflector 6, and current limliting change-over valve 4 and gear type pump 3 are all in parallel with the oil revolving end of hydraulic reservoir 31, lift oil tank 1 is connected with multiple directional control valve 5, and steering cylinder 2 is connected with deflector 6.The 3rd check valve 21, the 4th check valve 22, second by pass valve 23 and the 3rd by pass valve 24 is provided with between steering cylinder 2 and deflector 6; The 5th check valve 61 and the 4th by pass valve 62 is provided with between deflector 6 and current limliting change-over valve 4, and deflector 6 and the oil revolving end being connected hydraulic reservoir 31 after current limliting change-over valve 4 parallel connection by the 4th by pass valve 62.
Multiple directional control valve 5 comprises the first reversing control valve 51 for controlling lift oil tank 1, first reversing control valve 51 is connected with current limliting change-over valve 4, and the first reversing control valve 51 is connected with the oil revolving end of hydraulic reservoir 31, lift oil tank 1 is connected with the first reversing control valve 51.Be provided with single-way flow restricting valve 11 between lift oil tank 1 and the first reversing control valve 51, and be also provided with shutoff valve 12 between single-way flow restricting valve 11 and lift oil tank 1.
Also comprise dump ram 7; Multiple directional control valve 5 also comprises the second reversing control valve 52 for controlling dump ram 7.Multiple directional control valve 5 also comprises the first by pass valve 53, first by pass valve 53 and the first reversing control valve 51, second reversing control valve 52 C/LOOP in series.Multiple directional control valve 5 also comprises the first check valve 54 for connecting the first reversing control valve 51 and the second check valve 55 for being connected the second reversing control valve 52, and the first check valve 54 and the second check valve 55 parallel with one another.
Turning to of battery electric forklift truck adopts hydraulic power-assisted steering, be by drive motor 32 driving gear pump 3, the hydraulic oil in hydraulic reservoir 31 become the hydraulic oil of high pressure, by deflector 6 to steering cylinder 2, cylinder piston motion promotes wheel flutter and rotates, and realizes fork-truck steering; The battery electric forklift truck goods that hoists adopts hydraulic oil equally by multiple directional control valve 5 to lift oil tank 1, lift oil tank piston movement, promotes door frame and rises and realize cargo handing;
In view of both carrying out practical function by hydraulic way, therefore consider that function adopts a drive motor 32 to drive a gear type pump 3 to realize.Adopt a motor by steer motor and lifting motor, steering pump adopts a pump with the pump that hoists, and unifies between two.
When turning to, few by oil mass; When hoisting, large by oil mass, therefore electric motor speed controller is set in drive motor 32 control circuit, Negotiation speed controller controls motor speed, also, when fork truck is in motion, only need to turn to, at this moment, Negotiation speed controller controls drive motor 32 and slowly runs; Realize hydraulic efficiency pressure system low discharge fuel feeding.When fork truck is when hoisting action, Negotiation speed controller controls drive motor 32 high speed rotating, ensures the needs of hydraulic efficiency pressure system high-volume hydraulic oil.
During forklift-walking, travel direction is selected by direction switch, direction switch passes the signal to the electric motor speed controller controlling drive motor 32, electric motor speed controller controls drive motor 32 and rotates with a low speed speed, when direction of operating dish rotational hydraulic oil enters steering cylinder 2 through deflector 6, promote oil cylinder piston side-to-side movement, thus promote wheel flutter swing, realize rotating.When operating forklift lifting operating valve lever, valve rod action, touch the switch that hoists being arranged on valve rod limit, electric signal is sent to electric motor speed controller by the switch that hoists, electric motor speed controller controls drive motor 32 and rotates with a high speed speed, a large amount of hydraulic oil to lift oil tank 1 by multiple directional control valve 5, is promoted lift oil tank 1 and rises, realize cargo handing.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.
Claims (8)
1. the battery electric forklift truck of a Hydraulic Pump and steering pump unification, comprise lift oil tank (1), steering cylinder (2), with the gear type pump (3) and the hydraulic reservoir (31) that provide high-voltage oil liquid for described lift oil tank (1), described steering cylinder (2), and drive the drive motor (32) of described gear type pump (3);
It is characterized in that, described drive motor (32) is provided with electric motor speed controller, also comprise current limliting change-over valve (4), multiple directional control valve (5) and deflector (6), the oil inlet end of described gear type pump (3) connects the oil outlet end of described hydraulic reservoir (31), the oil outlet end of described gear type pump (3) connects described current limliting change-over valve (4), described multiple directional control valve (5) and described deflector (6) are all connected with described current limliting change-over valve (4), described multiple directional control valve (5) is all connected with the oil revolving end of described hydraulic reservoir (31) with described deflector (6), and described current limliting change-over valve (4) and described gear type pump (3) are all in parallel with the oil revolving end of described hydraulic reservoir (31), described lift oil tank (1) is connected with described multiple directional control valve (5), described steering cylinder (2) is connected with described deflector (6).
2. the battery electric forklift truck of Hydraulic Pump as claimed in claim 1 and steering pump unification, it is characterized in that, described multiple directional control valve (5) comprises the first reversing control valve (51) for controlling described lift oil tank (1), described first reversing control valve (51) is connected with described current limliting change-over valve (4), and described first reversing control valve (51) is connected with the oil revolving end of described hydraulic reservoir (31), described lift oil tank (1) is connected with described first reversing control valve (51).
3. the battery electric forklift truck of Hydraulic Pump as claimed in claim 2 and steering pump unification, it is characterized in that, be provided with single-way flow restricting valve (11) between described lift oil tank (1) and described first reversing control valve (51), and be also provided with shutoff valve (12) between described single-way flow restricting valve (11) and described lift oil tank (1).
4. the battery electric forklift truck of Hydraulic Pump as claimed in claim 2 and steering pump unification, is characterized in that, also comprise dump ram (7); Described multiple directional control valve (5) also comprises the second reversing control valve (52) for controlling described dump ram (7).
5. the battery electric forklift truck of Hydraulic Pump as claimed in claim 4 and steering pump unification, it is characterized in that, described multiple directional control valve (5) also comprises the first by pass valve (53), described first by pass valve (53) and described first reversing control valve (51), described second reversing control valve (52) C/LOOP in series.
6. the battery electric forklift truck of Hydraulic Pump as claimed in claim 4 and steering pump unification, it is characterized in that, described multiple directional control valve (5) also comprises the first check valve (54) for connecting described first reversing control valve (51) and the second check valve (55) for being connected described second reversing control valve (52), and described first check valve (54) and described second check valve (55) parallel with one another.
7. the battery electric forklift truck of Hydraulic Pump as claimed in claim 1 and steering pump unification, it is characterized in that, between described steering cylinder (2) and described deflector (6), be provided with the 3rd check valve (21), the 4th check valve (22), the second by pass valve (23) and the 3rd by pass valve (24); The 5th check valve (61) and the 4th by pass valve (62) is provided with between described deflector (6) and described current limliting change-over valve (4), and described deflector (6) the rear oil revolving end that by described four by pass valve (62) be connected described hydraulic reservoir (31) in parallel with described current limliting change-over valve (4).
8. the battery electric forklift truck of Hydraulic Pump as claimed in claim 1 and steering pump unification, is characterized in that, be provided with oil filter (33) between the oil inlet end of described gear type pump (3) and the oil outlet end of described hydraulic reservoir (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877754.XA CN105329314A (en) | 2015-12-04 | 2015-12-04 | Storage battery electric forklift integrating hydraulic pump and steering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877754.XA CN105329314A (en) | 2015-12-04 | 2015-12-04 | Storage battery electric forklift integrating hydraulic pump and steering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105329314A true CN105329314A (en) | 2016-02-17 |
Family
ID=55280153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877754.XA Pending CN105329314A (en) | 2015-12-04 | 2015-12-04 | Storage battery electric forklift integrating hydraulic pump and steering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105329314A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512684A (en) * | 2017-09-22 | 2017-12-26 | 广州鼎诚机电设备有限公司 | A kind of full electric control hydraulic device of electri forklift |
| CN114183416A (en) * | 2021-12-16 | 2022-03-15 | 杭叉集团股份有限公司 | Three-way stacking type forklift hydraulic system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405079A (en) * | 2001-08-13 | 2003-03-26 | 同济大学 | Fully-hydraulic electric fork truck |
| CN2633703Y (en) * | 2003-07-01 | 2004-08-18 | 浙江杭叉工程机械股份有限公司 | Forklift hydraulic device for lifting and turning with one motor |
| CN101428640A (en) * | 2008-12-18 | 2009-05-13 | 浙江杭叉工程机械集团股份有限公司 | Integrated diesel fork lift truck dynamic state signal load sensing hydraulic steering system |
| CN201685704U (en) * | 2010-04-14 | 2010-12-29 | 安徽工程科技学院 | Electric forklift hydraulic device used with single power source |
| US20120043154A1 (en) * | 2010-08-19 | 2012-02-23 | Marcus Bitter | Hydraulic system |
| CN202785538U (en) * | 2012-08-02 | 2013-03-13 | 宁波海迈克动力科技有限公司 | Hydraulic lifting system for electric fork-lift truck |
| CN205273603U (en) * | 2015-12-04 | 2016-06-01 | 安徽合叉叉车有限公司 | Battery electric fork -lift of hydraulic pump and steering pump unification |
-
2015
- 2015-12-04 CN CN201510877754.XA patent/CN105329314A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405079A (en) * | 2001-08-13 | 2003-03-26 | 同济大学 | Fully-hydraulic electric fork truck |
| CN2633703Y (en) * | 2003-07-01 | 2004-08-18 | 浙江杭叉工程机械股份有限公司 | Forklift hydraulic device for lifting and turning with one motor |
| CN101428640A (en) * | 2008-12-18 | 2009-05-13 | 浙江杭叉工程机械集团股份有限公司 | Integrated diesel fork lift truck dynamic state signal load sensing hydraulic steering system |
| CN201685704U (en) * | 2010-04-14 | 2010-12-29 | 安徽工程科技学院 | Electric forklift hydraulic device used with single power source |
| US20120043154A1 (en) * | 2010-08-19 | 2012-02-23 | Marcus Bitter | Hydraulic system |
| CN202785538U (en) * | 2012-08-02 | 2013-03-13 | 宁波海迈克动力科技有限公司 | Hydraulic lifting system for electric fork-lift truck |
| CN205273603U (en) * | 2015-12-04 | 2016-06-01 | 安徽合叉叉车有限公司 | Battery electric fork -lift of hydraulic pump and steering pump unification |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512684A (en) * | 2017-09-22 | 2017-12-26 | 广州鼎诚机电设备有限公司 | A kind of full electric control hydraulic device of electri forklift |
| CN114183416A (en) * | 2021-12-16 | 2022-03-15 | 杭叉集团股份有限公司 | Three-way stacking type forklift hydraulic system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102633213B (en) | Energy regeneration type forklift hydraulic system | |
| CN102134047B (en) | Energy-saving hydraulic system of electric forklift | |
| CN103950870B (en) | A kind of forklift hydraulic system of double pump fuel feeding band energy regenerating | |
| CN103522929A (en) | Fixed delivery and variable delivery hydraulic system of mining dump truck | |
| CN106976825B (en) | Bypass the scissor aerial work platform hydraulic control system of off-load electromagnetic direct-drive | |
| CN108502816A (en) | Bypass type energy regeneration forklift hydraulic system | |
| CN202785538U (en) | Hydraulic lifting system for electric fork-lift truck | |
| CN103807237B (en) | Two hydraulic motors handover control system | |
| CN105544645A (en) | Skid steer loader with safety protection function, and working hydraulic system of skid steer loader | |
| CN105217530A (en) | Storage battery radial type Narrow tunnel forklift truck | |
| CN105329314A (en) | Storage battery electric forklift integrating hydraulic pump and steering pump | |
| CN205273603U (en) | Battery electric fork -lift of hydraulic pump and steering pump unification | |
| CN103011016B (en) | Multifunctional automobile | |
| CN103994216B (en) | Manual steering hydraulic power tractor hydraulic control system | |
| CN114606995B (en) | Electric hydraulic system and loader | |
| CN202542790U (en) | Energy-saving forklift hydraulic system with energy recycling | |
| CN204778589U (en) | Hydraulic pressure lifting mechanism | |
| CN203890013U (en) | Double-pump oil supply and energy recovery type forklift hydraulic system | |
| CN207513953U (en) | Quarry tipper fixed dilivery hydraulic system | |
| CN202968031U (en) | Hydraulic control system used for industrial vehicle lifting device | |
| CN201962039U (en) | Energy-saving hydraulic system of electronic forklift | |
| CN111120433A (en) | Electric forklift and hydraulic system thereof | |
| CN203064020U (en) | Telescopic arm forklift hydraulic system | |
| CN202575895U (en) | Energy regeneration type hydraulic system for forklift | |
| CN204674433U (en) | The hoisting system of dumping car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160217 |
|
| RJ01 | Rejection of invention patent application after publication |