CN213981862U

CN213981862U - Electric automobile and gearbox thereof

Info

Publication number: CN213981862U
Application number: CN202022983023.2U
Authority: CN
Inventors: 石魏; 王澍龙; 文健峰; 王坤俊; 谢佳
Original assignee: CRRC Electric Vehicle Co Ltd
Current assignee: CRRC Electric Vehicle Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-17
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses an electric automobile and gearbox thereof, a serial communication port, include: the input shaft component (1), the intermediate shaft component (2) and the output shaft component (3) are in transmission connection in sequence; the gear shifting assembly (4), the gear shifting assembly (4) is including shifting fork (41) and integrated be used for the drive on the shifting fork (41) shift the automatically controlled gearshift that fork (41) removed, shift fork (41) remove the in-process can with the gear joint that the different fender position of output shaft subassembly corresponds. The gear shifting fork and the electric control gear shifting mechanism are integrated, and the electric control gear shifting mechanism is integrated in the automatic gearbox, so that the box body and the mounting parts are reduced, and the weight of the automatic gearbox is reduced.

Description

Electric automobile and gearbox thereof

Technical Field

The utility model relates to an electric automobile technical field, in particular to electric automobile and gearbox thereof.

Background

With the rapid development of automobile electronic control technology and single chip microcomputer technology, the application of the automatic gearbox is more and more extensive. The electric control mechanical automatic gearbox (AMT) is characterized in that an electric control gear shifting executing device is additionally arranged on a traditional mechanical gearbox to realize gear shifting of the gearbox, and the AMT has the advantages of high transmission efficiency, low cost, oil consumption saving and the like.

At present, most of domestic and foreign AMT gearboxes are additionally provided with a set of gear shifting actuating mechanism on the outer side on the basis of the traditional manual gearbox, so that automatic gear shifting is realized. The method has the advantages of good production inheritance and low cost, but is not in line with the development trend of light weight and integration.

Therefore, how to provide a transmission to reduce weight is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a gearbox reduces weight. The utility model also provides an electric automobile with above-mentioned gearbox.

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

a transmission, comprising:

the input shaft assembly, the middle shaft assembly and the output shaft assembly are sequentially in transmission connection;

the gear shifting assembly comprises a gear shifting fork and an electronic control gear shifting mechanism which is integrated on the gear shifting fork and used for driving the gear shifting fork to move, and the gear shifting fork can be engaged with gears corresponding to different gears of the output shaft assembly in the moving process.

Preferably, in the above transmission, the electrically controlled shift mechanism includes:

a shift motor;

and one end of the screw rod is fixedly connected with an output shaft of the gear shifting motor, and the other end of the screw rod is in threaded connection with the gear shifting fork to drive the gear shifting fork to move along a straight line.

Preferably, in the transmission described above, the shift motor is rotatable in forward and reverse directions.

Preferably, in the above transmission, the shift motor may drive the shift fork to shift between two gears.

Preferably, in the transmission case, the shifting fork is a semicircular ring, the top of the shifting fork is provided with a protrusion, the protrusion is slidably mounted on the inner wall of the automatic transmission case, and the screw thread penetrates through the protrusion.

Preferably, in the above gearbox, a sensor for detecting information of a gear position of the shift fork is further included, and the shift motor is controlled to move.

Preferably, in the transmission described above, the sensor is mounted on the shift fork.

An electric vehicle comprising a gearbox, wherein the gearbox is any one of the gearboxes described above.

The utility model provides a pair of gearbox arranges with the shift fork of shifting and automatically controlled gearshift integration to with automatically controlled gearshift integration inside automatic gearbox, reduced box and installation component, reduced automatic gearbox's weight.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a transmission disclosed in an embodiment of the present invention;

fig. 2 is a schematic structural view of an output shaft assembly of the transmission disclosed in an embodiment of the present invention;

fig. 3 is a power flow diagram of the 1 st gear power transmission output disclosed in the embodiment of the present invention;

fig. 4 is a power flow diagram of a 2-gear power transmission output disclosed in an embodiment of the present invention;

fig. 5 is a power flow diagram of a 3-speed power transmission output disclosed in an embodiment of the present invention;

fig. 6 is a power flow diagram of the 4-gear power transmission output disclosed in the embodiment of the present invention.

Detailed Description

The utility model discloses a gearbox reduces weight. The utility model also discloses an electric automobile of having above-mentioned gearbox.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-6, the present application further discloses a transmission comprising: the input shaft component 1, the intermediate shaft component 2 and the output shaft component 3 are in transmission connection in sequence; the automatic transmission further comprises a gear shifting assembly 4, specifically, the gear shifting assembly 4 comprises a gear shifting fork 41 and an electronic control gear shifting mechanism which is integrated on the gear shifting fork 41 and used for driving the gear shifting fork 41 to move, and the gear shifting fork 41 can be engaged with gears corresponding to different gears of the output shaft assembly 3 in the moving process. The gear shifting fork 41 and the electric control gear shifting mechanism are integrated, and the electric control gear shifting mechanism is integrated inside the automatic gearbox, so that the box body and the mounting parts are reduced, and the weight of the automatic gearbox is reduced.

In a specific embodiment, the electrically controlled shifting mechanism includes: a shift motor 43 and a lead screw 42. One end of the screw rod 42 is fixedly connected with an output shaft of the gear shifting motor 43, and the other end of the screw rod is in threaded connection with the gear shifting fork 41 to drive the gear shifting fork 41 to move linearly. During operation, the gear shifting motor 43 drives the screw rod 42 to rotate, and the gear shifting fork 41 moves linearly along the circumference direction because the gear shifting fork 41 is relatively fixed, so that the gear shifting fork is engaged with different output gears, and the rotating speeds of the output shafts are different. The application discloses a concrete structure that the drive shift fork 41 removed, also can adopt drive cylinder to change the position of shift fork 41 in reality. When the driving cylinder is adopted, a plurality of gears can be arranged in the stroke range of the driving cylinder, and the gears can be specifically arranged according to actual needs and are all in the protection range.

The gear shifting motor 43 disclosed in the application can realize forward and reverse rotation, and when the gear shifting motor 43 rotates forward, the gear shifting fork 41 moves forward and can be engaged with a gear in the direction; when the shift motor 43 is rotated in the reverse direction, the shift fork 41 can move backward and can be engaged with the gear wheel in that direction. By adopting the mode, the power output can be conveniently carried out in a reverse rotation mode, and a reverse gear does not need to be specially arranged.

In a preferred embodiment, the shift motor 43 can drive the shift fork 41 to shift between two gears, i.e. the shift motor 43 is engaged with the output gear corresponding to one gear when rotating in the forward direction, and the shift motor 43 is engaged with the output gear corresponding to the other gear when rotating in the reverse direction. In practice, the gear gears corresponding to a plurality of gears may be provided on the driving stroke of the shift motor 43, that is, the stroke of the shift motor 43 may be increased. It will be understood by those skilled in the art that the stroke of the shift motor 43 can be set according to the number of gears.

The shift fork 41 in this application is the semicircle ring spare to the top has the arch, and foretell arch slidable installs on automatic transmission's inner wall to the rotation of this shift fork 41 is restricted, and foretell lead screw 42 screw passes the arch, realizes converting the rotation of shift motor 43 into the linear motion of shift fork 41. The connection mode and the connection position of the lead screw 42 and the gear shifting fork 41 can be set according to different requirements, and are all within a protection range.

In a further embodiment, the gearbox further comprises a sensor 5 for detecting information on the gear in which the shift fork 41 is located. The sensor 5 is arranged, so that the gear of the current gearbox can be automatically detected, the gear shifting motor 43 is controlled according to the current vehicle speed and the gear, automatic switching is achieved, manual switching is not needed, and automatic gear shifting is further achieved. In practice, the gear can be manually shifted without the sensor 5. The sensor 5 is mounted on the shift fork 41, and determines the current gear information according to the position of the shift fork 41, in practice, the sensor 5 may also be disposed on a gear, and when the shift fork 41 contacts the sensor 5 on the gear, the gear information is obtained.

In combination with the above arrangement, the specific gearbox works in detail as follows:

the transmission input power transmits power to the intermediate shaft input teeth of the intermediate shaft assembly 2 through the input shaft and the input teeth of the input shaft assembly 1, the input teeth and the intermediate shaft input teeth are long meshing gear pairs, the intermediate shaft input teeth are fixedly arranged on the intermediate shaft of the intermediate shaft assembly 2 in an interference fit mode, so that the power is transmitted to the intermediate shaft, and the 1-gear intermediate tooth, the 2-gear intermediate tooth and the 3-gear intermediate tooth are also fixedly arranged on the intermediate shaft in the interference fit mode and are respectively in long meshing with the 1-gear output tooth, the 2-gear output tooth and the 3-gear output tooth; the 1-gear output tooth, the 2-gear output tooth and the 3-gear output tooth are supported and mounted on an output shaft 32 of the output shaft assembly 3 through bearings, and the 1-gear output tooth 34, the 2-gear output tooth 31, the 3-gear output tooth and the output shaft 32 are in free motion states; the 3-4 gear synchronizer clutch and the 1-2 gear synchronizer clutch 33 are both fixed on the output shaft 32 through spline fit, so the 3-4 gear synchronizer clutch and the 1-2 gear synchronizer clutch 33 are in an integrated transmission state with the output shaft 32. Can realize different fender position power take off through the subassembly of shifting gears, this application adopts two subassemblies of shifting gears, is 1-2 subassembly of shifting gears and 3-4 subassembly of shifting gears respectively, specifically as follows:

1-gear power transmission output:

under the action of a shifting motor 43 of the 1-2 shifting assembly, the rotating motion of the shifting motor 43 is converted into linear motion through a shifting lead screw 42 of the 1-2 shifting assembly, a shifting fork 41 of the 1-2 shifting assembly is pushed to move rightwards, a 1-2 gear synchronizer clutch sleeve 33 is pushed rightwards, and is combined with the 1 gear output tooth 34 through the clutch sleeve, so that power is transmitted to an output shaft 32 through the 1 gear output tooth 34 and the 1-2 gear synchronizer clutch sleeve 33, and power is output, and the power flow diagram is shown in fig. 3.

And 2, power transmission output of the gear:

under the action of a shifting motor 43 of the 1-2 shifting assembly, the rotating motion of the shifting motor 43 is converted into linear motion through a shifting lead screw 42 of the 1-2 shifting assembly, a shifting fork 41 of the 1-2 shifting assembly is pushed to move leftwards, a 1-2 gear synchronizer clutch sleeve 33 is pushed leftwards, and is combined with the 2-gear output tooth 31 through the clutch sleeve, so that power is transmitted to an output shaft 32 through the 2-gear output tooth 31 and the 1-2 gear synchronizer clutch sleeve 33, power is output, and the power flow diagram is shown in fig. 4.

3, power transmission output of a gear:

under the action of a gear shifting motor of the 3-4 gear shifting assembly, the rotary motion of the gear shifting motor is converted into linear motion through a gear shifting lead screw of the 3-4 gear shifting assembly, a gear shifting fork of the 3-4 gear shifting assembly is pushed to move rightwards, a 3-4 gear synchronizer clutch sleeve is pushed rightwards, and the clutch sleeve is combined with a 3 gear output gear, so that power is transmitted to an output shaft through the 3 gear output gear and the 3-4 gear synchronizer clutch sleeve, the power is output, and the power flow diagram is shown in fig. 5.

4, power transmission output in a 4-gear mode:

under the action of a gear shifting motor of the 3-4 gear shifting assembly, the rotary motion of the gear shifting motor is converted into linear motion through a gear shifting lead screw of the 3-4 gear shifting assembly, a gear shifting fork of the 3-4 gear shifting assembly is pushed to move leftwards, a 3-4 gear synchronizer clutch sleeve is pushed leftwards, and the clutch sleeve is combined with input teeth of the input shaft assembly 1, so that power is transmitted to an output shaft through the input teeth and the 3-4 gear synchronizer clutch sleeve, and power is output; in the gear, the power of the input shaft is directly output through the engaging sleeve and the output shaft, and the power flow diagram is shown in fig. 6.

In addition, this application has still disclosed an electric automobile, including the gearbox, wherein, this gearbox is the gearbox that discloses in the above-mentioned implementation, therefore, the electric automobile who has this gearbox also has above-mentioned all technological effects, and the no longer gives unnecessary details here.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transmission, comprising:

the input shaft component (1), the intermediate shaft component (2) and the output shaft component (3) are in transmission connection in sequence;

the gear shifting assembly (4), the gear shifting assembly (4) is including shifting fork (41) and integrated be used for the drive on the shifting fork (41) shift the automatically controlled gearshift that fork (41) removed, shift fork (41) remove the in-process can with the gear joint that the different fender position of output shaft subassembly corresponds.

2. A transmission according to claim 1, wherein the electrically controlled gear shifting mechanism comprises:

a shift motor (43);

the gear shifting mechanism comprises a screw rod (42), one end of the screw rod (42) is fixedly connected with an output shaft of a gear shifting motor (43), and the other end of the screw rod (42) is in threaded connection with a gear shifting fork (41) to drive the gear shifting fork (41) to move along a straight line.

3. Gearbox according to claim 2, characterised in that the shift motor (43) is rotatable in forward and reverse directions.

4. Gearbox according to claim 2, characterised in that said shifting motor (43) can drive said shift fork (41) to shift between two gears.

5. Gearbox according to claim 2, characterised in that the shift fork (41) is a semicircular ring and has a projection at the top, which is slidably mounted on the inner wall of the automatic gearbox, through which projection the lead screw (42) is threaded.

6. Gearbox according to any of claims 2-5, characterised in that it further comprises a sensor (5) for detecting the gear information of the shift fork (41) and controlling the movement of the shift motor (43).

7. Gearbox according to claim 6, characterised in that said sensor (5) is mounted on said shift fork (41).

8. An electric vehicle comprising a gearbox, characterised in that the gearbox is a gearbox according to any one of claims 1-7.