CN211592261U

CN211592261U - Driving system for bulldozer and bulldozer with driving system

Info

Publication number: CN211592261U
Application number: CN201921623282.5U
Authority: CN
Inventors: 张斌
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-09-29
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a actuating system and have its bull-dozer for bull-dozer, actuating system includes for the bull-dozer: a running motor (10) for driving the bulldozer to walk and work; the gearbox (9) is connected with the output end of the running motor (10), and the gearbox (9) is connected with a final transmission structure of the bulldozer; a steering motor (5) for driving the bulldozer to steer; and the power battery (11) is electrically connected with the running motor (10) and the steering motor (5) and is used for supplying power. The utility model provides a actuating system for bull-dozer has effectively reduced intensity of labour to, transmission efficiency has been improved.

Description

Driving system for bulldozer and bulldozer with driving system

Technical Field

The utility model relates to a transmission technical field, in particular to actuating system for bull-dozer and have its bull-dozer.

Background

At present, a bulldozer mainly uses an engine to provide power, and the transmission modes mainly include mechanical, hydraulic mechanical and full hydraulic transmission structures, so that a driving system of the bulldozer is composed of the engine and at least one transmission structure.

For a driving system with a pure mechanical transmission structure, when the working load of the bulldozer changes suddenly, the engine and the transmission system are easy to be impacted, the engine is easy to be flamed out, the working condition requirements can be met only by frequently and timely shifting gears, and the labor intensity of operators is high.

Although the drive system of the hydraulic mechanical transmission structure or the drive system of the full hydraulic transmission structure can overcome the above disadvantages of the drive system of the pure mechanical transmission structure, the transmission efficiency is low.

Therefore, how to reduce the labor intensity and improve the transmission efficiency is a problem to be solved urgently by the technical personnel.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a actuating system for bull-dozer to reduce intensity of labour, improve transmission efficiency. The utility model also provides a bull-dozer of actuating system for the above-mentioned bull-dozer.

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

a drive system for a bulldozer, comprising:

the running motor drives the bulldozer to walk and work;

the gearbox is connected with the output end of the running motor and is connected with a final transmission structure of the bulldozer;

a steering motor for driving the bulldozer to steer;

and the power battery is electrically connected with the running motor and the steering motor and used for supplying power.

Optionally, in the above driving system for a bulldozer, the final drive structure includes a final drive connected to an output end of the final drive;

the output end of the gearbox and the output end of the steering motor are connected with the input end of the main speed reducer.

Optionally, the + bulldozer drive system further comprises a torsional damper, and the torsional damper is disposed between the transmission and a final drive structure of the bulldozer.

Optionally, in the above-mentioned drive system for a bulldozer, the transmission is an automatic mechanical transmission having a gear selecting and shifting mechanism, and the gear selecting and shifting mechanism can be controlled by a vehicle controller to perform a gear shifting operation.

Optionally, the + bulldozer drive system further includes a battery management system;

the input end of the battery management system is electrically connected with the power battery, and the output end of the battery management system is electrically connected with the running motor and the steering motor.

Optionally, in the above + bulldozer drive system, the operating motor is a switched reluctance motor.

Optionally, the + bulldozer drive system further includes a motor controller for controlling the switched reluctance motor;

the battery management system is electrically connected with the running motor through the motor controller.

Optionally, the driving system for a bulldozer further includes a dc-ac converter provided at an input end of the steering motor;

the battery management system is electrically connected with the steering motor through the direct current-alternating current converter.

Optionally, the driving system for the bulldozer further comprises a vehicle control unit and a motor controller for controlling the switched reluctance motor;

the battery management system, the motor controller and the direct current-alternating current converter are in communication connection with the vehicle control unit.

The utility model provides a actuating system for bull-dozer moves motor drive bull-dozer walking and operation to, adjust the rotational speed that the operation motor transmitted to the final drive structure of bull-dozer through the gearbox, thereby realize the speed operation to bull-dozer walking and operation. The steering motor drives the bulldozer to steer so as to be separated from the walking and operation of the bulldozer and facilitate independent driving. The power battery supplies power to the running motor and the steering motor. The utility model provides a driving system for bulldozer, which uses a power battery for the running motor and the steering motor, and avoids additional arrangement of parts; moreover, the bulldozer is driven by the running motor, an engine is not required to be used for providing power, a mechanical type, a hydraulic mechanical type and a full-hydraulic type transmission structure are avoided, the running motor is more convenient to control, and when the working load of the bulldozer changes suddenly, an operator is not required to shift gears of the gearbox, so that the labor intensity is effectively reduced, and the transmission efficiency is improved.

The utility model also provides a bull-dozer, including actuating system, actuating system is as above-mentioned any kind of actuating system for bull-dozer. Since the driving system for a bulldozer has the above technical effects, a bulldozer having the driving system for a bulldozer should have the same technical effects, and the description thereof will not be repeated.

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 driving system for a bulldozer according to an embodiment of the present invention.

Detailed Description

The utility model discloses a actuating system for bull-dozer to reduce intensity of labour, improve transmission efficiency. The utility model also provides a bull-dozer of actuating system for the above-mentioned bull-dozer.

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.

Referring to fig. 1, an embodiment of the present invention provides a driving system for a bulldozer, which includes an operation motor 10, a transmission 9, a steering motor 5, and a power battery 11. The running motor 10 drives the bulldozer to walk and work; the gearbox 9 is connected with the output end of the running motor 10, and the gearbox 9 is connected with the final transmission structure of the bulldozer; the steering motor 5 drives the bulldozer to steer; the power battery 11 is electrically connected with the running motor 10 and the steering motor 5, so that the power battery 11 supplies power to the running motor 10 and the steering motor 5.

The utility model provides a driving system for bull-dozer, operation motor 10 drive bull-dozer walking and operation to, adjust the rotational speed that operation motor 10 transmitted to the final drive structure of bull-dozer through gearbox 9, thereby realize the speed operation to bull-dozer walking and operation. The steering motor 5 drives the bulldozer to steer so as to be separated from the walking and operation of the bulldozer and facilitate independent driving. The power battery 11 supplies power to the running motor 10 and the steering motor 5. The utility model provides a driving system for bulldozer, which uses the common power battery 11 of the running motor 10 and the steering motor 5 to avoid additional arrangement of parts; moreover, the traveling and the operation of the bulldozer are driven by the operation motor 10, an engine is not required to be used for providing power, a mechanical type, a hydraulic mechanical type and a full-hydraulic type transmission structure are also avoided, the operation motor 10 is more convenient to control, and when the working load of the bulldozer changes suddenly, an operator is not required to shift gears of a gearbox, so that the labor intensity is effectively reduced, and the transmission efficiency is improved.

And, the utility model provides a actuating system for bull-dozer for pure electric power system, can replace bull-dozer traditional driving system, the zero release has played the environmental protection effect. Meanwhile, a hydraulic element which is high in cost and precise in manufacturing is replaced.

Wherein the capacity of the power battery 11 is matched with the electric energy requirement in the bulldozer working time.

In this embodiment, the final drive structure includes a main reducer 7 and a final drive 6 connected to an output end of the main reducer 7; the output end of the gearbox 9 and the output end of the steering motor 5 are connected with the input end of the main reducer 7. Through the above arrangement, in the existing bulldozer, only the output end of the gearbox 9 is connected with the input end of the main speed reducer 7, and the output end of the steering motor 5 is connected with the input end of the main speed reducer 7.

The embodiment of the utility model provides an among the actuating system for the bull-dozer, still include torsional damper 8, torsional damper 8 sets up between the final drive structure of gearbox 9 and bull-dozer. Through setting up torsional damper 8, effectively reduced gearbox 9 and to final drive structure transmission vibration, effectively protect final drive structure, improve actuating system's life. The torsional damper 8 transmits power to the final drive structure main reducer 7 on one hand, and reduces the impact of heavy load sudden change on the running motor 10 and the gearbox 9 on the other hand. Compared with the existing hydraulic torque converter, the transmission efficiency is higher.

For further convenience of operation, the gearbox 9 is an automatic mechanical gearbox with a gear selection and shifting mechanism; the gear selecting and shifting mechanism can be controlled by the vehicle control unit 4 to execute gear shifting operation. Through the arrangement, the labor intensity of operators is further reduced.

The driving system for the bulldozer further comprises a battery management system 1; the input end of the battery management system 1 is electrically connected with the power battery 11, and the output end of the battery management system 1 is electrically connected with the running motor 10 and the steering motor 5.

In order to further conveniently adapt to the characteristic of the working condition of sudden load change of the bulldozer, the running motor 10 is preferably a motor with a stepless speed regulation function.

Preferably, the run motor 10 is a switched reluctance motor. The switched reluctance motor has the advantages that the speed regulating system has a direct current speed regulating system and an alternating current speed regulating system, and can be more suitable for the operation of being electrically connected with the power battery 11 and powered by the power battery 11.

The switched reluctance motor has the advantages of strong environmental adaptability, reliable operation, strong heat dissipation capability and better suitability for the special operation environment of the engineering machinery. Under the working condition of large load sudden change, the stepless speed regulation function of the motor is utilized to quickly respond to the working condition requirement.

Further, the switched reluctance motor is integrated with a gearbox 9(AMT, automated mechanical transmission). That is, the output shaft of the switched reluctance motor and the input shaft of the transmission case 9(AMT, automatic mechanical transmission) can be set to an integrated shaft, and the housing of the switched reluctance motor and the transmission case 9(AMT, automatic mechanical transmission) can also be set to an integrated housing, so that the overall weight is effectively reduced, the gear shifting operation of an operator is reduced, and the intensity of workers is further reduced.

The driving system for the bulldozer provided in the present embodiment further includes a motor controller 3 for controlling the switched reluctance motor; the battery management system 1 is electrically connected to the running motor 10 via the motor controller 3.

In order to adapt to the use of a conventional motor as the steering motor 5, the steering motor further comprises a direct current-alternating current converter 2 arranged at the input end of the steering motor 5; the battery management system 1 is electrically connected with a steering motor 5 through a direct current-alternating current converter 2.

In this embodiment, the driving system for the bulldozer further includes a vehicle control unit 4 and a motor controller 3 for controlling the switched reluctance motor; the battery management system 1, the motor controller 3 and the direct current-alternating current converter 2 are in communication connection with the vehicle control unit 4.

In this embodiment, the final transmission structure for transmitting power to the chassis through the torsional vibration damper 8 includes a main speed reducer 7, and then transmits the power to the track driving wheel (final transmission 6) through the final transmission structure including the main speed reducer 7, when the vehicle control unit 4 collects the current working condition information of the bulldozer, the vehicle control unit puts forward corresponding power requirements on the operating motor 10 and the gearbox 9, and the operating motor 10 and the gearbox 9 give full play to the mechanical properties according to the current power requirements, so that the operating motor 10 outputs torque and rotation speed meeting the working condition requirements in an efficient operating interval, and the gearbox 9 and the operating motor 10 coordinate with each other to adjust the optimal transmission ratio (gear), thereby realizing the walking (advancing or retreating) and operation functions of the bulldozer. When the vehicle control unit 4 acquires a steering demand, the steering motor 5 is driven by the direct current-alternating current converter 2(DCAC), so that the 360-degree steering function of the bulldozer is realized, and the power battery 11 simultaneously provides electric energy for the running motor 10 (switched reluctance motor) and the steering motor 5.

The embodiment of the utility model provides a still provide a bull-dozer, including actuating system, actuating system is as above-mentioned any kind of actuating system for the bull-dozer. Since the driving system for a bulldozer has the above technical effects, a bulldozer having the driving system for a bulldozer should have the same technical effects, and the description thereof will not be repeated.

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 drive system for a bulldozer, comprising:

a running motor (10) for driving the bulldozer to walk and work;

the gearbox (9) is connected with the output end of the running motor (10), and the gearbox (9) is connected with a final transmission structure of the bulldozer;

a steering motor (5) for driving the bulldozer to steer;

and the power battery (11) is electrically connected with the running motor (10) and the steering motor (5) and is used for supplying power.

2. A drive system for a bulldozer according to claim 1, in which said final drive structure comprises a final drive (7) and a final drive (6) connected to an output of said final drive (7);

the output end of the gearbox (9) and the output end of the steering motor (5) are connected with the input end of the main speed reducer (7).

3. The drive system for a bulldozer according to claim 1, characterised in that it further comprises a torsional vibration damper (8), said torsional vibration damper (8) being arranged between said gearbox (9) and the final drive structure of said bulldozer.

4. A drive system for a bulldozer according to claim 1, in which said gearbox (9) is an automatic mechanical gearbox having a gear selection and shift mechanism, said gear selection and shift mechanism being controllable by the vehicle control unit (4) to perform a gear shifting operation.

5. The drive system for a bulldozer according to claim 1, characterised in that it further comprises a battery management system (1);

the input end of the battery management system (1) is electrically connected with the power battery (11), and the output end of the battery management system (1) is electrically connected with the running motor (10) and the steering motor (5).

6. The drive system for a bulldozer according to claim 5, in which said running motor is a switched reluctance motor.

7. The drive system for a bulldozer according to claim 6, further comprising a motor controller (3) for controlling said switched reluctance motor;

the battery management system (1) is electrically connected with the running motor (10) through the motor controller (3).

8. The drive system for a bulldozer according to claim 5, characterised in that it further comprises a dc-ac converter (2) provided at the input of said steering motor (5);

the battery management system (1) is electrically connected with the steering motor (5) through the direct current-alternating current converter (2).

9. The drive system for a bulldozer according to claim 8, in which said running motor is a switched reluctance motor;

the motor controller is characterized by also comprising a whole vehicle controller (4) and a motor controller (3) for controlling the switched reluctance motor;

the battery management system (1), the motor controller (3) and the direct current-alternating current converter (2) are in communication connection with the vehicle control unit (4).

10. A bulldozer comprising a drive system, wherein said drive system is a bulldozer drive system according to any one of claims 1 to 9.