CN210012549U - Electric forklift driving and hydraulic integrated power system - Google Patents
Electric forklift driving and hydraulic integrated power system Download PDFInfo
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- CN210012549U CN210012549U CN201920677615.6U CN201920677615U CN210012549U CN 210012549 U CN210012549 U CN 210012549U CN 201920677615 U CN201920677615 U CN 201920677615U CN 210012549 U CN210012549 U CN 210012549U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses an electric fork truck driving and hydraulic integrated power system, which comprises an electric fork truck driving power subsystem and an electric fork truck hydraulic power subsystem; the electric forklift driving power subsystem comprises a driving motor, a driving motor control unit and a large-speed-ratio speed reducer; the hydraulic power subsystem of the electric forklift comprises an oil pump motor, an oil pump motor control unit and an oil pump; the drive motor control unit and the oil pump motor control unit are integrated into a whole to form a drive motor and oil pump motor two-in-one controller; the electric forklift driving power subsystem and the electric forklift hydraulic power subsystem are completely integrated. The electric forklift drive and hydraulic power subsystem has high integration level, completely cancels the connection of a three-phase power wire harness and a low-voltage sampling control wire harness between an external motor and a motor controller, and greatly reduces the electric energy transmission loss; meanwhile, the driving and hydraulic integrated power system is easier to assemble and install with the whole vehicle.
Description
Technical Field
The utility model belongs to the field of electric forklifts; relates to a driving and hydraulic integration technology; in particular to an electric forklift drive and hydraulic integrated power system.
Background
The market of the Chinese forklift has wide development space, and particularly the market potential of the electric forklift is huge. With the continuous development of economy, higher requirements are put on the driving of the electric forklift and a hydraulic power system.
The existing electric forklift driving and hydraulic power system has a single technical route, a driving motor and a front axle reducer are basically adopted to form a walking power unit, an oil pump motor and an oil pump form a hydraulic power unit, and a driving motor controller and an oil pump motor controller are separately arranged to form a motor control unit; the whole power system adopts a large-range decentralized arrangement mode, the walking power unit is arranged at the front axle of the vehicle body, the hydraulic power unit is arranged in the middle or at the rear part of the vehicle body, and the motor control unit is arranged in the middle or at the rear part of the vehicle body; in the system, the walking power unit and the hydraulic power unit are far away from the motor control unit, the length of a connecting cable is too long, the whole vehicle assembly is not facilitated, the cost is increased due to the too long cable, the electric energy use efficiency is influenced, and finally the energy consumption of the whole vehicle is greatly increased; for the state that the driving and hydraulic power system is distributed in a large-scale mode, the heat dissipation efficiency and the function are not easy to achieve, and each unit needs to be cooled or dissipated independently, so that the structure is very complex, and the cost is greatly increased.
Therefore, the driving and hydraulic power system of the electric forklift needs a high-efficiency driving and hydraulic integrated power system which is highly integrated in structure and can realize centralized arrangement, so that the system cost is reduced and the system efficiency is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric fork-lift drive and hydraulic pressure integrated driving system.
The purpose of the utility model can be realized by the following technical scheme:
an electric forklift drive and hydraulic integrated power system comprises a drive power subsystem and a hydraulic power subsystem;
the driving power subsystem comprises a driving motor, a parallel shaft speed reducer and a driving motor control unit; the output shaft of the driving motor is coaxially connected with the input shaft of the parallel shaft speed reducer through a spline; the parallel shaft speed reducer comprises a plurality of groups of gear shafts which are arranged in parallel, each pair of paired gear sets on the gear shafts are meshed with each other, and a differential is arranged on the last stage output gear shaft, wherein all the gear shafts are arranged on a speed reducer shell through bearings; the driving motor control unit is arranged in the two-in-one motor controller;
the hydraulic power subsystem comprises an oil pump motor, an oil pump and an oil pump motor control unit; the oil pump motor is fixedly connected to one side of the shell of the parallel shaft speed reducer; the output shaft of the oil pump motor is coaxially connected with the input shaft of the oil pump through a spline; the oil pump motor control unit is arranged in the two-in-one motor controller;
the two-in-one motor controller is fixedly supported on the driving motor and the oil pump motor through a plurality of supporting points;
the driving motor, the parallel shaft speed reducer, the oil pump motor, the oil pump and the two-in-one motor controller are integrated into a whole power system in a fixed connection mode.
Furthermore, a three-phase power line and a low-voltage signal line of the driving motor and the two-in-one motor controller are connected in the shell of the driving motor and the two-in-one motor controller; the three-phase power line and the low-voltage signal line of the oil pump motor and the two-in-one motor controller are connected inside the shell of the oil pump motor and the two-in-one motor controller.
Furthermore, the external electrical connection of the driving power subsystem and the hydraulic power subsystem only comprises a high-voltage positive and negative direct current connector and a low-voltage signal connector which are arranged on the two-in-one motor controller.
Further, driving motor, oil pump motor and two unification machine controller all cool off through the liquid cooling mode, and the cooling water route is the integrated series system of integrated driving system inside.
Furthermore, the parallel shaft speed reducer comprises an output flange plate on the shell, and the output flange plate and a tooth packet flange plate of a front axle of the electric forklift are fixedly connected into a whole after being positioned through a spigot.
Further, the parallel shaft speed reducer comprises a plurality of mounting holes in the bottom of the shell, and the mounting holes are fixedly connected with the supporting arms on the frame of the electric forklift through bolts.
Further, the two-in-one motor controller is a driving motor and oil pump motor two-in-one motor controller.
The utility model has the advantages that:
1. the utility model can integrate the power system of the electric fork truck into a unified whole, without distributed arrangement, with simple structure, convenient for the installation of the whole truck, and greatly improve the integration and reliability of the power system;
2. the utility model greatly reduces the external cable connection between each part and even cancels the external cable connection between each part of the electric forklift driving and hydraulic power system, reduces the resistance caused by overlong cables while reducing the assembly and installation procedures by reducing the length of the cables, improves the operation efficiency of the power system and prolongs the operation time of the forklift;
3. the utility model discloses an integrated form liquid cooling system reduces electric fork truck drive and hydraulic power system's temperature rise by a wide margin, improves integrated driving system's reliability, increase of service life, satisfies more severe electric fork truck operation requirement.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is an overall schematic view 1 of the driving and hydraulic integrated power system of the electric forklift of the present invention;
fig. 2 is an overall schematic view 2 of the electric forklift drive and hydraulic integrated power system of the present invention;
FIG. 3 is a view in the direction A of the overall schematic of FIG. 1;
FIG. 4 is a view in the direction B of the overall schematic of FIG. 1;
FIG. 5 is a view in the direction C indicated generally in FIG. 2;
FIG. 6 is a D-view of the overall schematic of FIG. 2;
FIG. 7 is a view in the direction E of the overall schematic of FIG. 1;
fig. 8 is an F-direction view generally illustrated in fig. 2.
Detailed Description
As shown in fig. 1-8, an electric forklift drive and hydraulic integrated power system includes a drive power subsystem and a hydraulic power subsystem;
the driving power subsystem comprises a driving motor 1, a parallel shaft speed reducer 2 and a driving motor control unit 301; the output shaft of the driving motor 1 is coaxially connected with the input shaft of the parallel shaft speed reducer 2 through a spline; the parallel shaft speed reducer 2 comprises a plurality of groups of gear shafts which are arranged in parallel, each pair of paired gear sets on the gear shafts are meshed with each other, and a differential is arranged on the last stage output gear shaft, wherein all the gear shafts are arranged on a speed reducer shell through bearings; the driving motor control unit 301 is arranged in the driving motor and oil pump motor two-in-one motor controller 3;
the hydraulic power subsystem comprises an oil pump motor 4, an oil pump 5 and an oil pump motor control unit 302; the oil pump motor 4 is fixedly connected to one side of the shell of the parallel shaft speed reducer 2; the output shaft of the oil pump motor 4 is coaxially connected with the input shaft of the oil pump 5 through a spline; the oil pump motor control unit 302 is arranged inside the driving motor and oil pump motor two-in-one motor controller 3;
the driving motor and oil pump motor two-in-one motor controller 3 is fixedly supported on the driving motor 1 and the oil pump motor 4 through a plurality of supporting points;
the driving motor 1, the parallel shaft speed reducer 2, the oil pump motor 4, the oil pump 5 and the driving motor and oil pump motor two-in-one motor controller 3 are integrated into an integral power system in a fixed connection mode;
the external electrical connection of the driving power subsystem and the hydraulic power subsystem only comprises a high-voltage positive and negative direct current connector 303 and a low-voltage signal connector 304 which are arranged on the driving motor and oil pump motor two-in-one motor controller 3;
the three-phase power line and the low-voltage signal line of the driving motor 1, the driving motor and oil pump motor two-in-one motor controller 3 are connected inside the shell of the driving motor 1, the driving motor and oil pump motor two-in-one motor controller 3; the three-phase power line and the low-voltage signal line of the oil pump motor 4, the driving motor and oil pump motor two-in-one motor controller 3 are connected inside the shell of the oil pump motor 4, the driving motor and oil pump motor two-in-one motor controller 3;
the driving motor 1, the oil pump motor 4 and the driving motor and oil pump motor two-in-one motor controller 3 are cooled in a liquid cooling mode, and a cooling water path is an integrated series connection mode inside the integrated power system;
the parallel shaft speed reducer 2 comprises an output flange plate 201 on a shell, and the output flange plate 201 and a tooth packet flange plate of a front axle of the electric forklift are positioned through a spigot and then fixedly connected into a whole;
parallel shaft speed reducer 2 includes a plurality of mounting hole 202 of casing bottom, mounting hole 202 can pass through bolt fixed connection with the support arm on the electric fork truck frame, avoids integrated driving system is rotatory around the front axle axis.
In summary, the utility model can make the power system of the electric fork-lift truck highly integrated and compactly arranged, and the power system is structurally integrated into a unified whole, without distributed arrangement, the structure is simple, the whole truck installation is convenient, and the integration level and the reliability of the power system are greatly improved; meanwhile, the integrated power system greatly reduces or even cancels external cable connection among all parts, reduces the resistance generated by overlong cables while reducing the assembling and installing procedures by reducing the length of the cables, improves the operating efficiency of the power system and prolongs the operation time of the forklift; furthermore, the utility model discloses an integrated form liquid cooling system reduces electric fork truck drive and hydraulic power subsystem's temperature rise by a wide margin, improves integrated driving system's reliability, increase of service life, satisfies more severe electric fork truck operation requirement.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.
Claims (7)
1. An electric forklift drive and hydraulic integrated power system comprises a drive power subsystem and a hydraulic power subsystem; it is characterized in that the preparation method is characterized in that,
the driving power subsystem comprises a driving motor (1), a parallel shaft speed reducer (2) and a driving motor control unit (301); the output shaft of the driving motor (1) is coaxially connected with the input shaft of the parallel shaft reducer (2) through a spline; the parallel shaft speed reducer (2) comprises a plurality of groups of gear shafts which are arranged in parallel, each pair of paired gear sets on the gear shafts are meshed with each other, and a differential is arranged on the last stage output gear shaft, wherein all the gear shafts are arranged on a speed reducer shell through bearings; the driving motor control unit (301) is arranged in the two-in-one motor controller (3);
the hydraulic power subsystem comprises an oil pump motor (4), an oil pump (5) and an oil pump motor control unit (302); the oil pump motor (4) is fixedly connected to one side of the shell of the parallel shaft speed reducer (2); the output shaft of the oil pump motor (4) is coaxially connected with the input shaft of the oil pump (5) through a spline; the oil pump motor control unit (302) is arranged inside the two-in-one motor controller (3);
the two-in-one motor controller (3) is fixedly supported on the driving motor (1) and the oil pump motor (4) through a plurality of supporting points;
the driving motor (1), the parallel shaft speed reducer (2), the oil pump motor (4), the oil pump (5) and the two-in-one motor controller (3) are integrated into a whole power system in a fixed connection mode.
2. The electric forklift drive and hydraulic integrated power system according to claim 1, wherein the three-phase power lines and the low-voltage signal lines of the drive motor (1) and the two-in-one motor controller (3) are connected inside the housings of the drive motor (1) and the two-in-one motor controller (3); the three-phase power line and the low-voltage signal line of the oil pump motor (4) and the two-in-one motor controller (3) are connected inside the shell of the oil pump motor (4) and the two-in-one motor controller (3).
3. The electric fork lift truck driving and hydraulic integrated power system as claimed in claim 1, wherein the external electrical connections of the driving power subsystem and the hydraulic power subsystem only comprise a high-voltage positive and negative DC connector (303) and a low-voltage signal connector (304) arranged on the two-in-one motor controller (3).
4. The integrated power system for electric forklift drive and hydraulic pressure as claimed in claim 1, wherein the driving motor (1), the oil pump motor (4) and the two-in-one motor controller (3) are all cooled by liquid cooling, and the cooling water path is integrated in series inside the integrated power system.
5. The integrated power system for the electric forklift drive and the hydraulic pressure as recited in claim 1, wherein the parallel shaft reducer comprises an output flange (201) on the shell, and the output flange (201) and a tooth packet flange of the front axle of the electric forklift are fixedly connected into a whole after being positioned by a spigot.
6. The electric fork lift drive and hydraulic integrated power system according to claim 1, wherein the parallel shaft reducer comprises a plurality of mounting holes (202) in the bottom of the housing, and the mounting holes (202) are fixedly connected with the support arms on the frame of the electric fork lift through bolts.
7. The integrated power system for electric forklift drive and hydraulic pressure as claimed in claim 1, wherein the two-in-one motor controller (3) is a two-in-one motor controller for driving motor and oil pump motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677615.6U CN210012549U (en) | 2019-05-13 | 2019-05-13 | Electric forklift driving and hydraulic integrated power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677615.6U CN210012549U (en) | 2019-05-13 | 2019-05-13 | Electric forklift driving and hydraulic integrated power system |
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| Publication Number | Publication Date |
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| CN210012549U true CN210012549U (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920677615.6U Active CN210012549U (en) | 2019-05-13 | 2019-05-13 | Electric forklift driving and hydraulic integrated power system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041783A1 (en) * | 2020-08-27 | 2022-03-03 | 安徽维德电源有限公司 | Liquid-cooled electric forklift integrated power system and control method therefor |
| EP3998173A4 (en) * | 2020-08-27 | 2023-03-15 | Anhui Weide Power Supply Co., Ltd. | Liquid cooling type electric forklift integrated power system and forklift |
-
2019
- 2019-05-13 CN CN201920677615.6U patent/CN210012549U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041783A1 (en) * | 2020-08-27 | 2022-03-03 | 安徽维德电源有限公司 | Liquid-cooled electric forklift integrated power system and control method therefor |
| EP3998173A4 (en) * | 2020-08-27 | 2023-03-15 | Anhui Weide Power Supply Co., Ltd. | Liquid cooling type electric forklift integrated power system and forklift |
| EP4086099A4 (en) * | 2020-08-27 | 2023-08-09 | Anhui Weide Power Supply Co., Ltd. | Liquid-cooled electric forklift integrated power system and control method therefor |
| US11919759B2 (en) | 2020-08-27 | 2024-03-05 | ANHUI WEIDE POWER SUPPLY Co.,Ltd. | Liquid-cooled integrative power system for electric forklift and control method thereof |
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