CN215590470U

CN215590470U - High-performance integrated electric drive axle for electric forklift

Info

Publication number: CN215590470U
Application number: CN202121088851.8U
Authority: CN
Inventors: 赵建; 郑旺旺
Original assignee: Anhui Daochi Intelligent Technology Co ltd
Current assignee: Anhui Gelaorui Machinery Equipment Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-01-21
Anticipated expiration: 2031-05-20

Abstract

The utility model discloses a high-performance integrated electric drive axle for an electric forklift, which comprises a motor, wherein a left reduction box is arranged on one side of the motor, a left half shaft is arranged in the left reduction box, a left axle housing is fixedly installed between the motor and the left reduction box through bolts, a right reduction box is arranged on the other side of the motor, a right half shaft is arranged in the right reduction box, a right axle housing is fixedly installed between the motor and the right reduction box through bolts, a wet brake and a differential assembly are arranged in the right reduction box, and the differential assembly is respectively connected with the left half shaft and the right half shaft through internal planetary gears. According to the utility model, through the matching among the right axle housing, the left axle housing, the right reduction box, the left reduction box and the like, a transverse arrangement mode is adopted, so that the space is greatly saved, compared with the traditional electric drive system, the occupied space is small, the weight is light, the arrangement space of the whole vehicle is saved, more power batteries can be carried, and the cruising ability of the whole vehicle is improved.

Description

High-performance integrated electric drive axle for electric forklift

Technical Field

The utility model relates to the technical field of logistics transportation, in particular to a high-performance integrated electric drive axle for an electric forklift.

Background

The drive axle is generally composed of a main speed reducer, a differential, a wheel transmission device, a drive axle housing and the like, and the steering drive axle is also provided with a constant velocity universal joint. The transaxle is subjected to vertical, longitudinal and lateral forces, as well as braking moments and reaction forces acting between the road surface and the frame or body.

The existing high-performance integrated electric drive axle for part of electric forklifts is simple in structure, large in occupied space, heavy in weight, large in occupied chassis space, incapable of carrying more battery packs and long in working time of the whole forklift; meanwhile, the high-performance integrated electric drive axle system for the existing part of electric forklifts has more faults, needs frequent maintenance and has certain use limitation. In view of the above, research and improvement are made to solve the existing problems, and a high-performance integrated electric drive axle for an electric forklift is provided, which can effectively solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a high-performance integrated electric drive axle for an electric forklift.

The scheme for solving the technical problems is as follows: the utility model provides an electric fork truck is with high performance integrated electric drive axle, includes the motor, one side of motor is provided with left reducing gear box, the inside of left reducing gear box is provided with left semi-axis, there is left axle housing through bolt fixed mounting between motor and the left reducing gear box, the opposite side of motor is provided with right reducing gear box, the inside of right reducing gear box is provided with right semi-axis, there is right axle housing through bolt fixed mounting between motor and the right reducing gear box, the inside of right reducing gear box is provided with wet brake and differential mechanism assembly, differential mechanism assembly is connected with left semi-axis and right semi-axis respectively through inside planetary gear.

Further: the left reduction box, the left axle housing, the motor, the right axle housing and the right reduction box are sequentially arranged from left to right.

Further: and a rotor shaft on the motor is matched with the differential assembly through a spline.

Further: two-stage planet carriers are arranged inside the left reduction box and the right reduction box, and the left reduction box and the right reduction box are connected with a wheel hub through the two-stage planet carriers.

Further: the hydraulic oil tank and the piston are arranged in the right reduction gearbox, the piston is located in the hydraulic oil tank, and the return spring corresponding to the piston is arranged in the right reduction gearbox.

The utility model has the following beneficial effects:

1. compared with the prior art, through the cooperation between right axle housing, left axle housing, right reducing gear box and the left reducing gear box etc. adopt horizontal arrangement, very big saving the space, it is little, light in weight to compare traditional electric drive system occupation space, saves whole car arrangement space, can carry on more power batteries, promotes the duration of whole car, and the experience of product is felt better, and the practicality is higher.

2. Compared with the prior art, through the cooperation between right reducing gear box, left reducing gear box and the planet carrier etc. two rows of planet carriers can realize the output of the high moment of torsion of big velocity ratio, greatly alleviate the weight of reducing gear box, cooperate wet brake, can realize the function of non-maintaining, high reliability, satisfied more demands in the in-service use, the suitability is stronger.

Drawings

Fig. 1 is a schematic overall structure diagram of a high-performance integrated electric drive axle for an electric forklift truck according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of a right reduction gearbox of the high-performance integrated electric drive axle for the electric forklift truck, which is provided by the utility model;

FIG. 3 is a working schematic diagram of a high-performance integrated electric drive axle for an electric forklift truck according to the present invention;

fig. 4 is a working principle diagram of a driving system of a conventional electric forklift.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a motor; 2. a right axle housing; 3. a left axle housing; 4. a hub; 5. a left reduction gearbox; 6. a planet carrier; 7. a return spring; 8. a wet brake; 9. a differential assembly; 10. a right reduction gearbox; 11. a left half shaft; 12. a right half shaft; 13. a piston; 14. a rotor shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the examples are only for explaining the present invention and are not intended to limit the scope of the present invention. The utility model is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 4, the present invention provides a high performance integrated electric drive axle for an electric forklift: including motor 1, one side of motor 1 is provided with left reducing gear box 5, the inside of left reducing gear box 5 is provided with left semi-axis 11, there is left axle housing 3 through bolt fixed mounting between motor 1 and the left reducing gear box 5, the opposite side of motor 1 is provided with right reducing gear box 10, the inside of right reducing gear box 10 is provided with right semi-axis 12, there is right axle housing 2 through bolt fixed mounting between motor 1 and the right reducing gear box 10, the inside of right reducing gear box 10 is provided with wet brake 8 and differential mechanism assembly 9, differential mechanism assembly 9 is connected with left semi-axis 11 and right semi-axis 12 respectively through inside planetary gear. Wherein, as shown in fig. 4, the working principle diagram of the driving system of the traditional electric forklift is divided into three parts: a drive axle a, a drive machine b and a reduction gearbox c; a differential g and a brake e are arranged on a drive axle a through bolts, the drive axle a and a reduction gearbox c are assembled through bolts, the drive axle a is fixed on a frame, and a driver b is arranged on one side of the reduction gearbox c through bolts; the whole vehicle controller sends a signal to the driving machine b to realize various working conditions of forward movement, backward movement, acceleration and deceleration; the specific implementation process comprises the following steps: the controller controls the rotating speed of the driver b, a driver shaft is matched with the reduction gearbox c to drive an inner gear of the reduction gearbox c to transmit torque, an output gear shaft of the reduction gearbox c is meshed with a gear of the differential mechanism g to transmit the torque to the differential mechanism g, the differential mechanism g drives the left half shaft f and the right half shaft h to transmit the torque and distribute the differential speed, and the left half shaft f and the right half shaft h transmit the torque to the tire assembly d, so that the driving function of the vehicle is realized.

Specifically, as shown in fig. 1, the left reduction box 5, the left axle housing 3, the motor 1, the right axle housing 2 and the right reduction box 10 are sequentially arranged from left to right. Compared with the traditional electric forklift driving system, the integrated electric bridge adopts a transverse arrangement mode, so that the space is greatly saved, more power batteries can be carried, and the cruising ability of the whole forklift is improved.

Specifically, as shown in fig. 1, 2 and 3, the rotor shaft 14 on the motor 1 is spline-engaged with the differential assembly 9. Two-stage planet carriers 6 are arranged inside the left reduction box 5 and the right reduction box 10, and the left reduction box 5 and the right reduction box 10 are connected with a wheel hub 4 through the two-stage planet carriers 6. A hydraulic oil tank and a piston 13 are arranged inside the right reduction gearbox 10, the piston 13 is located inside the hydraulic oil tank, and a return spring 7 corresponding to the piston 13 is arranged inside the right reduction gearbox 10. Different with traditional electric fork truck actuating system lies in: the motor 1 receives a signal generated by the whole vehicle controller, torque is output through a rotor shaft 14 on the motor 1, the rotor shaft 14 is in spline fit with a differential assembly 9 and transmits power to the differential assembly 9, the differential assembly 9 drives a left half shaft 11 and a right half shaft 12 to transmit torque, the left half shaft 11 and the right half shaft 12 transmit power to a left reduction gearbox 5 and a right reduction gearbox 10 to output torque, two stages of planet carriers 6 are respectively arranged in the left reduction gearbox 5 and the right reduction gearbox 10, the power is transmitted to a wheel hub 4 through the planet carriers 6, and the wheel hub 4 rotates to drive a tire to realize the running function of the whole vehicle; under the braking condition, hydraulic oil enters the piston 13 to push the piston 13 to press the wet brake 8, the wet brake 8 tightly holds the differential assembly 9, and the differential assembly 9 tightly holds the rotor shaft 14 on the motor 1 to realize service braking; after braking is released, oil liquid in the piston 13 returns to a hydraulic oil tank, the piston 13 is restored to the initial position by the return spring 7, and the differential assembly 9 is released from the clamping state.

The specific working principle and the using method of the utility model are as follows: when the automobile differential is used, the motor 1 receives a signal generated by an automobile controller, torque is output through the rotor shaft 14 on the motor 1, the rotor shaft 14 is in spline fit with the differential assembly 9 and transmits power to the differential assembly 9, the differential assembly 9 drives the left half shaft 11 and the right half shaft 12 to transmit torque, the left half shaft 11 and the right half shaft 12 transmit power to the left reduction gearbox 5 and the right reduction gearbox 10 to output torque, two stages of planet carriers 6 are respectively arranged in the left reduction gearbox 5 and the right reduction gearbox 10, the power is transmitted to the wheel hub 4 through the planet carriers 6, and the wheel hub 4 rotates to drive the tire to realize the running function of the automobile; under the braking condition, hydraulic oil enters the piston 13 to push the piston 13 to press the wet brake 8, the wet brake 8 tightly holds the differential assembly 9, and the differential assembly 9 tightly holds the rotor shaft 14 on the motor 1 to realize service braking; after braking is relieved, oil liquid of the piston 13 returns to the hydraulic oil tank, the piston 13 is restored to the initial position by the return spring 7, and the differential mechanism assembly 9 is relieved from a compression state;

by adopting a transverse arrangement mode, the arrangement space of the whole vehicle is greatly saved, more power batteries can be carried, and the cruising ability of the whole vehicle is improved; the output of big velocity ratio high moment of torsion can be realized through two rows of planet carriers 6, greatly alleviates the weight of reducing gear box, cooperates wet brake 8, can realize the function of non-maintaining, high reliability, and the experience of product is felt better, and the practicality is higher.

The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides an electric fork-lift is with integrated electric drive axle of high performance, includes motor (1), its characterized in that: one side of motor (1) is provided with left reducing gear box (5), the inside of left reducing gear box (5) is provided with left semi-axis (11), there is left axle housing (3) through bolt fixed mounting between motor (1) and left reducing gear box (5), the opposite side of motor (1) is provided with right reducing gear box (10), the inside of right reducing gear box (10) is provided with right semi-axis (12), there is right axle housing (2) through bolt fixed mounting between motor (1) and right reducing gear box (10), the inside of right reducing gear box (10) is provided with wet brake (8) and differential mechanism assembly (9), differential mechanism assembly (9) are connected with left semi-axis (11) and right semi-axis (12) respectively through inside planetary gear.

2. The high-performance integrated electric drive axle for the electric forklift according to claim 1, wherein: the left reduction box (5), the left axle housing (3), the motor (1), the right axle housing (2) and the right reduction box (10) are sequentially arranged from left to right.

3. The high-performance integrated electric drive axle for the electric forklift according to claim 1, wherein: and a rotor shaft (14) on the motor (1) is matched with the differential assembly (9) through a spline.

4. The high-performance integrated electric drive axle for the electric forklift according to claim 1, wherein: the left reduction gearbox (5) and the right reduction gearbox (10) are internally provided with two-stage planet carriers (6), and the left reduction gearbox (5) and the right reduction gearbox (10) are connected with a wheel hub (4) through the two-stage planet carriers (6).

5. The high-performance integrated electric drive axle for the electric forklift according to claim 1, wherein: a hydraulic oil tank and a piston (13) are arranged inside the right reduction gearbox (10), the piston (13) is located inside the hydraulic oil tank, and a return spring (7) corresponding to the piston (13) is arranged inside the right reduction gearbox (10).