CN213261963U

CN213261963U - Pure electric mining truck and power transmission system thereof

Info

Publication number: CN213261963U
Application number: CN202021665911.3U
Authority: CN
Inventors: 李磊; 韦贤玕; 吕小科; 纪传伟; 王晓
Original assignee: Suzhou Lvkon Transmission S&T Co Ltd
Current assignee: Suzhou Lvkon Transmission S&T Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-05-25
Anticipated expiration: 2030-08-12

Abstract

The utility model relates to a power transmission system of a pure electric mining truck, which comprises a first driving motor, a second driving motor, a first ATM gearbox, a second ATM gearbox, a left wheel reduction gear, a right wheel reduction gear and a drive axle; the power output shaft of the first driving motor is in transmission connection with the input shaft of the first ATM gearbox, the power output shaft of the second driving motor is in transmission connection with the input shaft of the second ATM gearbox, the output shaft of the first ATM gearbox is in transmission connection with a left half shaft corresponding to the drive axle, the output shaft of the second ATM gearbox is in transmission connection with a right half shaft corresponding to the drive axle, the left half shaft is connected with a left wheel through a left wheel reduction gear, and the right half shaft is connected with a right wheel through a right wheel reduction gear. The utility model discloses a bi-motor, two gearbox power coupling, power split, motor can last work in high-efficient district.

Description

Pure electric mining truck and power transmission system thereof

Technical Field

The application belongs to the field of vehicle power driving, and particularly relates to a pure electric mining truck and a power transmission system thereof.

Background

The drivetrain is one of the most important parts of a large mining truck, and it has a significant impact on the size and form of the truck. In the development history of mining trucks, the power transmission system and tires together are both a large-scale driver and a restrainer.

Because the traditional fuel oil mining truck has serious environmental pollution and low economic benefit, in order to respond to the national environmental protection call, various pure electric mining trucks are proposed for mining in recent years, the pure electric mining trucks provide power output by a high-power motor to replace a fuel oil engine, and the high-power motor and the fuel oil engine have different structures, so that the installation and connection of the high-power motor and a rear-section clutch gearbox are not matched, and a set of complete pure electric mining truck power driving structure needs to be designed.

The existing power driving mechanism of the pure electric mining truck is driven by a single motor, and the power performance of the single motor is relatively poor in the actual use process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the electric mining truck aims to solve the problems that in the prior art, due to the fact that a high-power motor and a fuel engine are different in structure, the electric mining truck is not matched with a rear-section clutch gearbox in installation and connection, and is driven by a single motor, and power performance is relatively poor.

In order to solve the technical problem, the utility model provides a pure electric mining truck and power transmission system thereof, the utility model discloses a bi-motor, two gearbox power coupling, power split, motor can continuous work in the high-efficient district.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a power transmission system of a pure electric mining truck, which comprises a first driving motor, a second driving motor, a first ATM gearbox, a second ATM gearbox, a left wheel reduction gear, a right wheel reduction gear and a drive axle;

the power output shaft of the first driving motor is parallel to the left half shaft and the right half shaft of the drive axle, the power output shaft of the first driving motor is in transmission connection with the input shaft of the first ATM gearbox, the power output shaft of the second driving motor is in transmission connection with the input shaft of the second ATM gearbox, the output shaft of the first ATM gearbox is in transmission connection with the left half shaft corresponding to the drive axle, the output shaft of the second ATM gearbox is in transmission connection with the right half shaft corresponding to the drive axle, the left half shaft is connected with a left wheel through a left wheel reduction gear, and the right half shaft is connected with a right wheel through a right wheel reduction gear.

The utility model discloses the beneficial effect who reaches: the utility model discloses all adopt 2 shelves AMT derailleurs as moment of torsion and rotational speed adjusting device to the front wheel and the rear wheel of vehicle, can realize the mode of operation of multiple gearbox power and rotational speed input, and traditional transaxle mechanical structure does not change, and mechanical differential's reliability is high, is suitable for heavy load downhill path, the no-load uphill operating mode of wide body tipper such as heavy ore deposit card;

the utility model adopts the cylindrical helical gear transmission, the whole mechanical efficiency is improved compared with the spiral main reduction gear, the braking energy recovery efficiency is high, and the device is suitable for the working environment of long-time charging on mines and the like;

the utility model is provided with the wheel-side reducer, so that the total output torque is larger, the heavy-load uphill power is strong, and the reliability is strong;

the utility model discloses a double-axle drive, heavy-duty demand scenes such as specially adapted mining truck.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

Fig. 1 is a schematic structural view of the pneumatic control valve assembly of the present invention;

the reference numbers in the figures are: 1-a first driving motor, 2-a first gearbox, 3-a first gear shifting mechanism, 4-a second driving motor, 5-a second gear shifting mechanism, 6-a second ATM gearbox, 7-a left wheel reduction gear, 8-a drive axle and 9-a right wheel reduction gear.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

The utility model provides a power transmission system of pure electric mining truck, as shown in figure 1, comprising a first driving motor 1, a second driving motor 4, a first ATM gearbox 2, a second ATM gearbox 6, a left wheel reduction gear 9, a right wheel reduction gear 7 and a drive axle 8;

the power output shaft of the first driving motor 1 and the power output shaft of the second driving motor 4 are parallel to the left half shaft and the right half shaft of the drive axle 8, the power output shaft of the first driving motor 1 is in transmission connection with the input shaft of the first ATM transmission case 2, the power output shaft of the second driving motor 4 is in transmission connection with the input shaft of the second ATM transmission case 6, the output shaft of the first ATM transmission case 2 is in transmission connection with the left half shaft corresponding to the drive axle 8, the output shaft of the second ATM transmission case 6 is in transmission connection with the right half shaft corresponding to the drive axle 8, the left half shaft is connected with a left wheel through a left wheel reduction gear 7, and the right half shaft is connected with a right wheel through a right wheel reduction gear 9.

In this embodiment, the power of the first driving motor 1 is output to the first gearbox 2, the power of the second driving motor 4 is output to the second gearbox 6, the output shafts of the first gearbox 2 and the second gearbox 6 are simultaneously in transmission connection with the drive axle 8, the power is simultaneously output to the drive axle 8, the power is distributed to the left half shaft and the right half shaft of the drive axle through the drive axle 8, and then the power is transmitted to the left wheel and the right wheel through the left wheel reduction gear 9 and the right wheel reduction gear 7, so that the functions of starting, running, advancing, braking, backing, braking energy recovery and the like of the wheels are realized.

The power coupling of the double motors and the double gearboxes is adopted in the embodiment, the power is divided, the working modes are multiple, and the motors can continuously work in a high-efficiency area. And through configuration wheel reduction for the total output torque is great, and heavy load power of going up a slope is powerful, and the reliability is strong.

In the embodiment, the power output shafts of the first driving motor 1 and the second driving motor 4 are arranged in parallel to the left half shaft and the right half shaft of the drive axle 8, so that the length of the whole structure relative to the vehicle body can be ensured to be relatively short, and the assembly positions of other devices can be ensured.

Optionally, the drive axle comprises a differential, and the differential is a cylindrical gear differential.

Further, the spur gear differential includes a main reduction gear that meshes with output teeth of the first and second ATM gearboxes, respectively. And the main reducing gear is a cylindrical helical gear, and the output teeth of the first ATM gearbox and the output teeth of the second ATM gearbox are helical gear structures matched with the cylindrical helical gear.

The first gearbox and the second gearbox are driven by the cylindrical helical gears, driving and braking force energy recovery driving torques are consistent, overall mechanical efficiency is improved compared with spiral main reduction gear driving, braking energy recovery energy can be improved, braking energy recovery efficiency is high, and the transmission device is suitable for mining and long-time charging working environments.

And the first driving motor of this embodiment the power take off shaft parallel arrangement of second driving motor through parallel shaft power input, helical gear transmission simultaneously, whole mechanical efficiency improves, and the noise reduces.

Optionally, the first driving motor is connected to the first ATM gearbox through a first universal joint in a transmission manner; and the second driving motor is in transmission connection with the second ATM gearbox through a second universal joint.

Optionally, in this embodiment, the first gear shift mechanism 3 is arranged on the input shaft of the first ATM transmission, the second gear shift mechanism 5 is arranged on the input shaft of the second ATM transmission, and the first gear shift mechanism 3 and the second gear shift mechanism 5 are arranged to control the first gear and the second gear.

Optionally, the first ATM gearbox and the second ATM gearbox are respectively disposed on two sides of the transaxle, and both the first ATM gearbox and the second ATM gearbox adopt a 2-gear AMT gearbox without power interruption.

The first ATM transmission case and the second ATM transmission case of the embodiment can be in the gear working mode all the time, gear shifting is free of power interruption, and driving smoothness is good. The specific structure of the 2-gear ATM gearbox without power interruption can adopt the existing 2-gear ATM gearbox structure without power interruption, such as the 2-gear ATM gearbox without power interruption disclosed in CN208951237U, and the detailed description is omitted here.

In this embodiment, the first gear selecting and shifting mechanism 3 and the second gear selecting and shifting mechanism 5 are respectively and independently arranged to ensure that at least one gearbox is in a working state or the output rotating speeds of the two gearboxes are the same.

This embodiment all adopts two 2 grades of AMT gearboxes as moment of torsion and rotational speed adjusting device to the front wheel and the rear wheel of vehicle, and 4 driving motor, 4 gearboxes totally 8 kinds of operating mode switch, remain driving motor throughout and be in the most efficient work area, and whole car operation economic nature is optimal.

In addition, the embodiment can realize various working modes of power and rotating speed input of the gearbox, the traditional drive axle mechanical structure is not changed, and the mechanical differential has high reliability; the self-unloading device is particularly suitable for the working conditions of heavy-load downhill and no-load uphill of the wide dumper such as a heavy mine truck.

Example 2:

this embodiment provides a pure electric mining truck, include the utility model discloses embodiment 1 power transmission system.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. A power transmission system of a pure electric mining truck is characterized by comprising a first driving motor, a second driving motor, a first ATM gearbox, a second ATM gearbox, a left wheel reduction gear, a right wheel reduction gear and a drive axle;

2. The drivetrain of a purely electric mining truck according to claim 1, characterized in that the drive axle comprises a differential, which is a spur gear differential.

3. The drivetrain of a purely electric mining truck according to claim 1, characterized in that the spur gear differential comprises main reduction gears that mesh with the output teeth of the first and second ATM gearboxes, respectively.

4. The drivetrain of a purely electric mining truck according to claim 3, wherein the main reduction gear is a cylindrical helical gear, and the output teeth of the first and second ATM transmissions are helical gear structures that match the cylindrical helical gear.

5. The drivetrain of a purely electric mining truck according to claim 1, characterized in that the first and second ATM gearboxes are provided separately on both sides of the transaxle.

6. The drivetrain of a purely electric mining truck according to claim 1, characterized in that the first drive motor is connected to the first ATM gearbox by a first cardan drive; and the second driving motor is in transmission connection with the second ATM gearbox through a second universal joint.

7. A drivetrain according to claim 5, wherein the first ATM gearbox is arranged with a first gear shift mechanism and the second ATM gearbox is arranged with a second gear shift mechanism.

8. The drivetrain of a purely electric mining truck according to claim 7, characterized in that the first and second ATM gearboxes both employ 2-gear AMT gearboxes without power interruption.

9. A pure electric mining truck comprising a drivetrain according to any of claims 1 to 8.