CN214647571U

CN214647571U - Drive assembly, traveling system and engineering machinery

Info

Publication number: CN214647571U
Application number: CN202120644206.3U
Authority: CN
Inventors: 玉立新; 鄢万斌; 蒋仁科; 莫艳芳; 陈素姣
Original assignee: Liugong Liuzhou Driving Member Co ltd; Guangxi Liugong Machinery Co Ltd
Current assignee: Liugong Liuzhou Driving Member Co ltd; Guangxi Liugong Machinery Co Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-11-09
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to an engineering machine tool technical field especially relates to a drive assembly, traveling system and engineering machine tool. The driving assembly comprises a mechanical transmission gearbox, a first motor and a second motor, the mechanical transmission gearbox comprises a first input shaft, a second input shaft and an output shaft, the first motor is connected with the first input shaft, the second motor is connected with the second input shaft, and the output shaft is connected with the front driving axle and the rear driving axle. Firstly, stepless speed change or reverse operation can be realized, and dual-motor coupling arrangement is adopted, so that dual-mode driving can be realized, and requirements of different working conditions are met; secondly, links of energy conversion can be reduced, and transmission efficiency is improved; the motor can realize the recycling of braking energy during braking again, the energy utilization rate is improved, the requirement of wheel braking force can be reduced, and the service life of the brake is prolonged; finally, the mechanical transmission gearbox adopts a fixed shaft type arrangement, and has simple and compact structure and high transmission efficiency.

Description

Drive assembly, traveling system and engineering machinery

Technical Field

The utility model relates to an engineering machine tool technical field especially relates to a drive assembly, traveling system and engineering machine tool.

Background

The loader is important mechanical equipment in engineering machinery construction, and is mainly used for shoveling, loading, transporting, digging and other operations of loose materials. The drive assembly of the existing loader consists of an engine, a hydraulic torque converter and a transmission, wherein a power source is from the engine, and after the torque and the rotating speed are adjusted by the hydraulic torque converter and the transmission, the power source is transmitted to wheels of a drive axle so as to realize the functions of walking and shoveling operation of the loader. The defects of the prior art are as follows: firstly, the power transmission process has two times of energy conversion, firstly the mechanical energy is converted into the internal energy of the liquid, and then the internal energy of the liquid is converted into the mechanical energy, so that the energy conversion and transmission efficiency is lower; secondly, the hydraulic transmission gearbox has poor braking capability, so that the mechanical brakes on the wheels have high use frequency and are worn quickly; thirdly, the hydraulic transmission gearbox cannot recover the braking energy; finally, the hydrodynamic transmission gearbox has strict requirements on the spatial position relationship between the input shaft and the output shaft, and the arrangement flexibility is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drive assembly, traveling system and engineering machine tool to solve the transmission inefficiency that current drive assembly exists, the stopper wearing and tearing are fast, can not carry out recycle and arrange the poor technical problem of flexibility to braking energy.

To achieve the purpose, the utility model adopts the following technical proposal:

a driving assembly comprises a mechanical transmission gearbox, a first motor and a second motor, wherein the mechanical transmission gearbox comprises a first input shaft, a second input shaft and an output shaft, the first input shaft is in transmission connection with the output shaft through a first gear set, the second input shaft is in transmission connection with the output shaft through a second gear set, the first motor is connected with the first input shaft, the second motor is connected with the second input shaft, and the output shaft is connected with a front driving axle and a rear driving axle.

The drive assembly preferably further comprises a controller and a battery, and the first motor and the second motor are electrically connected to the battery through the controller.

Preferably, the first gear set and the second gear set have different gear ratios.

As a preferable embodiment of the drive assembly, a clutch is provided between the first input shaft and the output shaft.

As a preferable embodiment of the drive assembly, a clutch is provided between the second input shaft and the output shaft.

As a preferable technical solution of the drive assembly, clutches are provided between the first input shaft and the output shaft, and between the second input shaft and the output shaft.

A walking system comprising a drive assembly as claimed in any one of the preceding claims.

A working machine comprises the walking system.

As a preferable technical solution of the construction machine, the construction machine is a loader.

The utility model has the advantages that:

the utility model provides a drive assembly, gearbox adopt mechanical transmission gearbox to adopt the motor as the driving source of mechanical transmission gearbox, can realize infinitely variable speed or reverse operation at first, and adopt the bi-motor coupling to arrange, can realize the bimodulus drive, satisfy different operating mode demands; secondly, links of energy conversion can be reduced, and transmission efficiency is improved; the motor can realize the recycling of braking energy during braking again, the energy utilization rate is improved, the requirement of wheel braking force can be reduced, the abrasion of the brake is reduced, and the service life of the brake is prolonged; finally, the mechanical transmission gearbox adopts a fixed shaft type arrangement, and has simple and compact structure and high transmission efficiency.

Drawings

Fig. 1 is a schematic diagram of a driving assembly according to an embodiment of the present invention.

In the figure:

10. a mechanical transmission gearbox; 11. a first input shaft; 12. a second input shaft; 13. an output shaft; 14. a clutch; 21. a first motor; 22. a second motor; 31. a front drive axle; 32. and a rear drive axle.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the utility model provides a drive assembly, including mechanical transmission gearbox 10, first motor 21 and second motor 22, mechanical transmission gearbox 10 includes first input shaft 11, second input shaft 12 and output shaft 13, first input shaft 11 is connected through first gear train transmission with output shaft 13, second input shaft 12 is connected through second gear train transmission with output shaft 13, first motor 21 is connected with first input shaft 11, second motor 22 is connected with second input shaft 12, output shaft 13 is connected with front drive axle 31 and rear drive axle 32.

The utility model provides a drive assembly, gearbox adopt mechanical transmission gearbox 10 to adopt the motor as the driving source of mechanical transmission gearbox 10, can realize infinitely variable speed or reverse operation at first, adopt the bi-motor coupling to arrange moreover, can realize the bimodulus drive, satisfy different operating mode demands; secondly, links of energy conversion can be reduced, and transmission efficiency is improved; the motor can realize the recycling of braking energy during braking again, the energy utilization rate is improved, the requirement of wheel braking force can be reduced, the abrasion of the brake is reduced, and the service life of the brake is prolonged; finally, the mechanical transmission gearbox 10 adopts a fixed shaft type arrangement, and has simple and compact structure and high transmission efficiency.

The utility model provides a drive assembly still includes controller and battery, and first motor 21 and second motor 22 all are connected with the battery electricity through the controller. When the system brakes, the inertia motion of the drive axle can reversely drag the motor to rotate for generating power, the electric energy generated by the motor can be stored in the battery, so that the braking energy is recycled, and the electric quantity stored in the battery can be provided for other devices needing power in the vehicle. Or in other embodiments, the electric energy generated by the electric motor can be directly provided to other devices in the vehicle which need electricity.

The transmission ratio of the first gear set and the second gear set is different, so that double-speed driving can be realized, and different working condition requirements are met.

In the present embodiment, the clutch 14 is provided between the first input shaft 11 and the output shaft 13, that is, the first motor 21 is in a selective operation state, the second motor 22 is in a normal operation state, when a large torque operation is required, the clutch 14 is made to couple the first input shaft 11 and the output shaft 13, and the first motor 21 and the second motor 22 are operated simultaneously, and when a large torque operation is not required, the clutch 14 is made to separate the first input shaft 11 and the output shaft 13, and the second motor 22 is made to operate alone. Or in other embodiments, a clutch 14 may be arranged between the second input shaft 12 and the output shaft 13; the clutches 14 may be provided between the first input shaft 11 and the output shaft 13 as well as between the second input shaft 12 and the output shaft 13. The working principle is the same as above, and the detailed description is omitted here.

The utility model also provides a traveling system, include as above the drive assembly. By adopting the driving assembly, stepless speed change or reverse operation can be realized, and dual-motor coupling arrangement is adopted, so that dual-mode driving can be realized, and different working condition requirements are met; secondly, links of energy conversion can be reduced, and transmission efficiency is improved; the motor can realize the recycle of braking energy when braking once more, promotes energy utilization, can reduce the demand of wheel limit braking force moreover, slows down the stopper wearing and tearing, improves the life of stopper.

The utility model also provides an engineering machine tool, include as above traveling system. By adopting the traveling system, stepless speed change or reverse operation can be realized, and dual-motor coupling arrangement is adopted, so that dual-mode driving can be realized, and requirements of different working conditions are met; secondly, links of energy conversion can be reduced, and transmission efficiency is improved; the motor can realize the recycle of braking energy when braking once more, promotes energy utilization, can reduce the demand of wheel limit braking force moreover, slows down the stopper wearing and tearing, improves the life of stopper.

The construction machine is preferably a loader, but may be other construction machines such as an excavator, and the present embodiment is not limited thereto.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A drive assembly is characterized by comprising a mechanical transmission gearbox (10), a first motor (21) and a second motor (22), wherein the mechanical transmission gearbox (10) comprises a first input shaft (11), a second input shaft (12) and an output shaft (13), the first input shaft (11) is in transmission connection with the output shaft (13) through a first gear set, the second input shaft (12) is in transmission connection with the output shaft (13) through a second gear set, the first motor (21) is connected with the first input shaft (11), the second motor (22) is connected with the second input shaft (12), and the output shaft (13) is connected with a front drive axle (31) and a rear drive axle (32).

2. The drive assembly according to claim 1, further comprising a controller and a battery, wherein the first motor (21) and the second motor (22) are both electrically connected to the battery through the controller.

3. The drive assembly of claim 1, wherein the first gear set and the second gear set have different gear ratios.

4. A drive assembly according to any one of claims 1-3, characterised in that a clutch (14) is arranged between the first input shaft (11) and the output shaft (13).

5. A drive assembly according to any one of claims 1-3, characterised in that a clutch (14) is arranged between the second input shaft (12) and the output shaft (13).

6. A drive assembly according to any one of claims 1-3, characterised in that a clutch (14) is arranged between the first input shaft (11) and the second input shaft (12) and the output shaft (13).

7. A walking system comprising a drive assembly according to any of claims 1-6.

8. A working machine, characterized by comprising a walking system according to claim 7.

9. The work machine of claim 8, wherein the work machine is a loader.