CN209743520U

CN209743520U - Dual-motor pure electric speed reducer assembly

Info

Publication number: CN209743520U
Application number: CN201920344297.1U
Authority: CN
Inventors: 雷兰燕; 邓利刚; 李贵庭; 高秀琴
Original assignee: Ganzhou Jingwei Science & Technology Co Ltd
Current assignee: Ganzhou Jingwei Science & Technology Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2019-12-06
Anticipated expiration: 2029-03-19

Abstract

The utility model discloses a pure electric reduction gear assembly of bi-motor belongs to reduction gear technical field, including left casing and right casing, install the connecting plate between left side casing and the right casing middle part, install first input shaft assembly between left side casing and the connecting plate, install the second input shaft assembly between right side casing and the connecting plate, the jackshaft assembly is installed to first input shaft assembly and second input shaft assembly lower extreme, and differential mechanism assembly is installed to jackshaft assembly lower extreme. The utility model solves the problem of insufficient power of a single motor; the two input shafts bear input loads simultaneously, so that the strength requirements of related parts on the input shafts can be reduced, and the manufacturing difficulty and the production cost are reduced; meanwhile, due to the adoption of double-motor driving, the problem that the whole vehicle cannot run due to the failure of a single motor or a partial transmission structure can be avoided. The utility model has simple structure and stable performance.

Description

Dual-motor pure electric speed reducer assembly

Technical Field

The utility model relates to a reduction gear technical field specifically is a pure electric reduction gear assembly of bi-motor.

Background

The reducer is an independent part consisting of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. The function of matching the rotation speed and transmitting the torque between the prime mover and the working machine or the actuating mechanism is very extensive in modern machinery.

With the development of electric vehicle technology and products, the existing electric speed reducer structure can not meet the requirements due to the fact that the requirements of users on the dynamic property of the whole vehicle are higher and higher, and the requirements of the whole vehicle on the miniaturization and high rotating speed of a motor are met. Especially on models such as electric buses, buses and the like, the existing single motor input is difficult to meet the power requirement, meanwhile, the input torque of the motor is increased, the strength requirements on parts such as gears and bearings in the speed reducer are improved, and the manufacturing difficulty and the production cost are increased. In view of the above circumstances, a dual-input shaft pure electric speed reducer assembly with high reliability and strong practicability is applied.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pure electric reduction gear assembly of bi-motor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides the following technical scheme:

The utility model provides a bi-motor electricelectric moves reduction gear assembly, includes left casing and right casing, install the connecting plate between left side casing and the right casing middle part, install first input shaft assembly between left side casing and the connecting plate, install the second input shaft assembly between right side casing and the connecting plate, the jackshaft assembly is installed to first input shaft assembly and second input shaft assembly lower extreme, and differential mechanism assembly is installed to jackshaft assembly lower extreme.

As a further scheme of the utility model: the first input shaft assembly and the second input shaft assembly respectively comprise input shafts, a first ball bearing is installed at one end of each input shaft, a second ball bearing is installed at the other end of each input shaft, and an input driving tooth is installed in the middle of each input shaft.

As a further scheme of the utility model: and the first input shaft assembly and the second input shaft assembly are respectively connected with a power motor through splines arranged on the input shafts.

As a further scheme of the utility model: the intermediate shaft assembly comprises an intermediate shaft, and two ends of the intermediate shaft are fixed on the left shell and the right shell through a first taper bearing and a second taper bearing respectively.

As a further scheme of the utility model: a first low-speed gear is installed at one end of the intermediate shaft, a second low-speed gear is installed at the other end of the intermediate shaft, and an intermediate driving gear is installed in the middle of the intermediate shaft.

As a further scheme of the utility model: the differential assembly comprises a differential shell, and the middle part of the differential shell is connected with a main reduction driven gear through a rivet.

As a further scheme of the utility model: and two ends of the differential shell are respectively fixed on the left shell and the right shell through a first differential cone bearing and a second differential cone bearing.

As a further scheme of the utility model: the input driving tooth is meshed with the first low-speed gear and the second low-speed gear.

As a further aspect of the present invention: the middle driving gear is meshed with the main speed reduction driven gear.

Compared with the prior art, this practical beneficial effect is:

The double-motor pure electric speed reducer assembly is reasonable in structure and novel in design, two motors are connected through a double-input shaft structure to work simultaneously, and the problem that power of a single motor is insufficient is solved; the two input shafts bear input loads simultaneously, so that the strength requirements of related parts on the input shafts can be reduced, and the manufacturing difficulty and the production cost are reduced; meanwhile, due to the adoption of double-motor driving, the problem that the whole vehicle cannot run due to the failure of a single motor or a partial transmission structure can be avoided. The utility model has simple structure and stable performance.

Drawings

Fig. 1 is a schematic structural diagram of a dual-motor pure electric speed reducer assembly.

Fig. 2 is a schematic structural diagram of a first input shaft assembly in a dual-motor pure electric reducer assembly.

Fig. 3 is a schematic structural diagram of a middle shaft assembly in a dual-motor pure electric speed reducer assembly.

FIG. 4 is a schematic structural diagram of a differential assembly in a dual-motor pure electric reducer assembly.

In the figure: 1-left shell, 2-connecting plate, 3-right shell, 4-first input shaft assembly, 5-second input shaft assembly, 6-intermediate shaft assembly, 7-differential assembly, 41-first ball bearing, 42-input shaft, 421-input driving tooth, 422-spline, 43-second ball bearing, 61-first cone bearing, 62-first low-speed gear, 63-intermediate shaft, 631-intermediate driving tooth, 64-second low-speed gear, 65-second cone bearing, 71-first differential cone bearing, 72-main reduction driven gear, 73-rivet, 74-differential shell and 75-second differential cone bearing.

Detailed Description

it should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application will be understood by those of ordinary skill in the art from the specific context.

The present invention will be described in detail with reference to the embodiments with reference to the accompanying drawings.

example 1

Referring to fig. 1, in the embodiment of the present invention, a pure electric reduction gear assembly of bi-motor, includes left casing 1 and right casing 3, install connecting plate 2 between left casing 1 and the 3 middle parts of right casing, install first input shaft assembly 4 between left casing 1 and the connecting plate 2, install second input shaft assembly 5 between right casing 3 and the connecting plate 2, jackshaft assembly 6 is installed to first input shaft assembly 4 and the 5 lower extremes of second input shaft assembly, and differential mechanism assembly 7 is installed to jackshaft assembly 6 lower extreme.

Referring to fig. 2, the first input shaft assembly 4 and the second input shaft assembly 5 respectively include an input shaft 42, a first ball bearing 41 is installed at one end of the input shaft 42, a second ball bearing 43 is installed at the other end of the input shaft 42, and an input driving tooth 421 is installed in the middle of the input shaft 42.

Referring to fig. 3, the intermediate shaft assembly 6 includes an intermediate shaft 63, two ends of the intermediate shaft 63 are fixed on the left housing 1 and the right housing 3 through a first conical bearing 61 and a second conical bearing 65, a first low-speed gear 62 is installed at one end of the intermediate shaft 63, a second low-speed gear 64 is installed at the other end of the intermediate shaft 63, and a middle driving gear 631 is installed in the middle of the intermediate shaft 63.

Referring to fig. 4, the differential assembly 7 includes a differential case 74, the middle of the differential case 74 is connected to a main reduction driven gear 72 through a rivet 73, and both ends of the differential case 74 are fixed to the left case 1 and the right case 3 through a first differential cone bearing 71 and a second differential cone bearing 75, respectively.

The input driving teeth 421 are engaged with the first and second low-speed gears 62 and 64, and the intermediate driving teeth 631 are engaged with the main reduction driven gear 72.

Example 2

In another embodiment of the present invention, the difference between the embodiment and the above embodiment is that the first input shaft assembly 4 and the second input shaft assembly 5 are respectively connected to the power motors through the splines 422 provided on the input shaft 42.

The working principle of the utility model is that: the double-input shaft structure is adopted, the input parts at two ends respectively bear the output load of the motor, under the condition of outputting the same torque, the strength requirements of the gear and the bearing on the input shaft 42 are better ensured, the cost can be properly reduced, and meanwhile, when the motor or the transmission structure at one end breaks down, the normal running of the vehicle can be ensured. The structure assembly has high bearing strength and good reliability, and is suitable for matching various passenger vehicles, logistics vehicles, passenger cars and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a bi-motor electricelectric moves reduction gear assembly, includes left casing (1) and right casing (3), install connecting plate (2) between left side casing (1) and right casing (3) middle part, its characterized in that installs first input shaft assembly (4) between left side casing (1) and connecting plate (2), installs second input shaft assembly (5) between right side casing (3) and connecting plate (2), jackshaft assembly (6) are installed to first input shaft assembly (4) and second input shaft assembly (5) lower extreme, and differential mechanism assembly (7) are installed to jackshaft assembly (6) lower extreme.

2. The double-motor pure electric speed reducer assembly according to claim 1, wherein the first input shaft assembly (4) and the second input shaft assembly (5) respectively comprise an input shaft (42), one end of the input shaft (42) is provided with a first ball bearing (41), the other end of the input shaft (42) is provided with a second ball bearing (43), and the middle part of the input shaft (42) is provided with an input driving gear (421).

3. The double-motor pure electric speed reducer assembly according to claim 2, wherein the first input shaft assembly (4) and the second input shaft assembly (5) are respectively connected with a power motor through a spline (422) arranged on the input shaft (42).

4. The double-motor pure electric reducer assembly according to claim 2, wherein the intermediate shaft assembly (6) comprises an intermediate shaft (63), and two ends of the intermediate shaft (63) are fixed on the left shell (1) and the right shell (3) through a first conical bearing (61) and a second conical bearing (65), respectively.

5. The double-motor pure electric speed reducer assembly according to claim 4, wherein a first low-speed gear (62) is mounted at one end of the intermediate shaft (63), a second low-speed gear (64) is mounted at the other end of the intermediate shaft (63), and an intermediate driving gear (631) is mounted in the middle of the intermediate shaft (63).

6. A dual-motor pure electric reducer assembly according to claim 5, wherein the differential assembly (7) comprises a differential case (74), and a main reduction driven gear (72) is connected to the middle part of the differential case (74) through a rivet (73).

7. The dual-motor pure electric reducer assembly according to claim 6, wherein both ends of the differential case (74) are fixed to the left case (1) and the right case (3) through a first differential cone bearing (71) and a second differential cone bearing (75), respectively.

8. A dual-motor electric-only reducer assembly according to claim 5, wherein the input driving gear (421) is intermeshed with the first and second low-speed gears (62, 64).

9. A dual-motor electric-only retarder assembly according to claim 6, characterized in that the intermediate driving teeth (631) are intermeshed with the main reduction driven gear (72).