CN216507888U

CN216507888U - Wheel type chassis driven by double motors

Info

Publication number: CN216507888U
Application number: CN202123225358.9U
Authority: CN
Inventors: 王文学; 夏超; 龙智武; 江红祥; 季明辉; 赵明
Original assignee: Xuzhou Bohui Shitong Heavy Industry Machinery Co ltd; China University of Mining and Technology CUMT
Current assignee: Xuzhou Bohui Shitong Heavy Industry Machinery Co ltd; China University of Mining and Technology CUMT
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-13
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a double-motor driven wheel type chassis, which comprises a power input part arranged in the middle of the chassis and two power transmission parts symmetrically arranged on two sides of the chassis, wherein the advantages of differential gear box, gear transmission and belt transmission are fully utilized, the power transmission parts on two sides can swing up and down along a central transmission shaft, the damping effect is good, and a vehicle can run more stably on a complex road surface; compared with other speed reducing structures, the wheel-side planetary speed reducer is more convenient to mount, more reliable in locking and positioning and less prone to generating gear beating; the hub planet speed reducer is fixed with the hub through a bolt, so that the contact area is large, the assembly error is small, the connection is stable, and the hub is not easy to loosen; the two symmetrically-installed motors are adopted as a power output structure, so that the whole chassis structure is more compact and stable on one hand, and on the other hand, the two motors work simultaneously to provide enough power so that the chassis can run on a complex road more easily.

Description

Wheel type chassis driven by double motors

Technical Field

The utility model relates to the field of vehicle wheel type chassis, in particular to a wheel type chassis driven by double motors.

Background

The vehicle structure mainly comprises a chassis system and a vehicle body, wherein the chassis system usually comprises a power driving part, a transmission, a speed reducer, a transmission shaft, a steering system, a suspension part, tires and the like, a front axle, a rear axle or a front axle and a rear axle are driven by concentrated power, a differential mechanism is also designed, and then the driving steering of the vehicle is carried out by the steering system, so that the road driving requirement of the vehicle is met. However, the high-permeability concrete block cannot meet the high-permeability requirement of harsh terrains such as muddy land and sandy land generally, the climbing capability is limited, and the turning radius is relatively large.

In the existing chassis structure, steering wheels are mostly adopted for steering or moving, and the dead weight of the chassis and a mechanical main body arranged on the chassis cause great burden on the movement or rotation of the steering wheels. Particularly, the construction site is mostly in a blank state, and the ground is mostly fluctuated and rough, so that great frictional resistance is caused. The rolling wheels are difficult to realize linear contact with the ground under actual conditions, and steering is particularly difficult, so that the chassis has poor moving capability and low flexibility, and great inconvenience is brought to the operation and use of workers.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical defects, the utility model aims to provide the double-motor driven wheel type chassis, which makes full use of the advantages of a differential gear box, gear transmission and belt transmission, so that the whole structure of the chassis can swing up and down along a central shaft, is more suitable for running on a complex road surface and has high flexibility.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a double-motor driven wheel type chassis, which comprises a power input part arranged in the middle of the chassis and two power transmission parts symmetrically arranged on two sides of the chassis;

the power input part comprises a differential gear box, two central transmission shafts of the differential gear box are respectively connected with a gear transmission system for providing kinetic energy for the differential gear box, and the gear transmission system comprises an intermediate gear which is embedded and fixed on the central transmission shafts, a power input gear which is rotatably connected on a gear box shell and is meshed with the intermediate gear, and a motor which is fixed on the gear box shell and provides kinetic energy for the power input gear;

the power transmission part comprises a support plate, the support plate is rotatably connected with a central transmission shaft through a rolling bearing, two ends of the support plate are symmetrically and rotatably connected with two power output shafts, the power output shafts are connected with driven gears I through a conveyor belt in a transmission way, and the two driven gears I are both meshed with a central driving gear on the central transmission shaft;

the power output shaft is embedded into a sun gear of the wheel-side planetary reducer for power transmission, an inner gear ring of the wheel-side planetary reducer is fixed with the wheel hub through a bolt, and power is transmitted to the wheel hub through the inner gear ring so as to complete power output.

Preferably, the power transmission part further comprises a second sheet metal shell which is fixed on the support plate and used for covering the rolling bearing, the central driving gear, the driven gear I and the conveyor belt.

Preferably, the power input portion further includes a first sheet metal housing fixed to and covering the differential case.

Preferably, a third sheet metal shell which covers the wheel-side planetary reducer is arranged on the wheel-side planetary reducer.

Preferably, a secondary driven wheel is fixed on the power output shaft in a nested mode and is rotatably connected to the support plate through a bearing sleeve, and the secondary driven wheel is in transmission connection with the driven gear I through a conveying belt.

The utility model has the beneficial effects that:

1. the utility model has simple, compact and reliable structure, fully utilizes the advantages of differential gear box, gear transmission and belt transmission, can swing up and down along the central transmission shaft by the power transmission parts at two sides, has good damping effect, ensures that the vehicle runs more stably on a complex road surface, and prolongs the service life of the automobile chassis.

2. Compared with other speed reducing structures, the wheel-side planetary speed reducer is more convenient to mount, more reliable in locking and positioning and less prone to generating tooth beating; the hub planetary reducer is fixed with the hub through the bolt, so that the contact area is large, the assembly error is small, the connection is stable, and the hub is not easy to loosen.

3. The two symmetrically-installed motors are adopted as power output structures, so that the whole chassis structure is more compact and stable on one hand, and on the other hand, the two motors work simultaneously to provide enough power so that the chassis can run on a complex road more easily.

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 the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a dual-motor driven wheeled chassis according to an embodiment of the present invention;

fig. 2 is a schematic diagram of internal transmission of a dual-motor driven wheeled chassis according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a differential case according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a power transmission portion provided in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a wheel-side planetary reducer provided in an embodiment of the present invention;

FIG. 6 is a schematic view showing the internal structure of the differential case according to the embodiment of the present invention;

fig. 7 is a schematic diagram of an internal structure of a wheel-side planetary reducer according to an embodiment of the present invention.

Description of reference numerals:

1. a first sheet metal housing; 2. a second sheet metal shell; 3. a third sheet metal shell; 1-1, a motor; 1-2, a differential case; 1-3, a central transmission shaft; 1-2-1, a power input gear; 1-2-2, intermediate gear; 1-2-3, a half axle gear; 1-2-4, a planetary gear; 1-2-5, a gearbox housing; 2-1, rolling bearings; 2-2, a central driving gear; 2-4, a driven gear I; 2-5, a conveyor belt; 2-6, a power output shaft; 3-1, wheel hub; 3-2, a wheel-side planetary reducer; 3-2-1 and an inner gear ring; 3-2-2, planet wheels; 3-2-3, sun gear; 3-2-4 and a planet carrier.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, a dual-motor driven wheeled chassis includes a power input part disposed in the middle of the chassis, two power transmission parts symmetrically disposed on both sides of the chassis;

the power input part comprises a differential gear box 1-2, and the differential gear box 1-2 is provided with a power input gear 1-2-1, an intermediate gear 1-2-2, a half axle gear 1-2-3, a planetary gear 1-2-4, two central transmission shafts 1-3 and a gear box shell 1-2-5; two central transmission shafts 1-3 of the differential gear box 1-2 are respectively connected with a gear transmission system for providing kinetic energy for the differential gear box, and the gear transmission system comprises an intermediate gear 1-2-2 which is embedded and fixed on the central transmission shaft 1-3, a power input gear 1-2-1 which is rotationally connected on a gear box shell 1-2-5 and is meshed with the intermediate gear 1-2-2, and a motor 1-1 which is fixed on the gear box shell 1-2-5 and provides kinetic energy for the power input gear 1-2-1;

due to the existence of the differential gear box 1-2 and the particularity of gear transmission, the power transmission part 2 can swing up and down along the central transmission shaft 1-3, so that the vehicle can run more stably under complex road conditions.

The power transmission part comprises a support plate, the support plate is rotatably connected with a central transmission shaft 1-3 through a rolling bearing 2-1, two ends of the support plate are symmetrically and rotatably connected with two power output shafts 2-6, the power output shafts 2-6 are in transmission connection with driven gears I2-4 through a conveyor belt 2-5, and the two driven gears I2-4 are both meshed with a central driving gear 2-2 on the central transmission shaft 1-3; the driven gear I2-4 can also be connected with the central driving gear 2-2 through multi-stage gear transmission to prolong the distance between the two power output shafts 2-6.

The central transmission shaft 1-3 drives the two driven gears I2-4 to rotate through the central driving gear 2-2, a transmission belt main wheel is further fixed on a middle shaft of each driven gear I2-4, a transmission belt auxiliary wheel is fixed on the power output shaft 2-6 on the same side, the transmission belt main wheel and the transmission belt auxiliary wheel are in transmission connection through a transmission belt 2-5, and the transmission ratio among the central driving gear 2-2, the driven gear I2-4, the transmission belt main wheel and the transmission belt auxiliary wheel is 1: 1.

The power transmission part does not perform speed reduction transmission, the transmission ratio of the gear transmission mechanism is 1, the belt transmission adopts synchronous belt transmission, and the driven gears I2-4 and a driving belt wheel of the belt transmission mechanism are fixed on a rotating shaft, so that the transition from the gear transmission to the belt transmission is realized.

The power output shaft 2-6 is embedded into a sun gear 3-2-3 of the wheel-side planetary reducer 3-2 to transmit power, an inner gear ring 3-2-1 of the wheel-side planetary reducer 3-2 is fixed with a wheel hub 3-1 through a bolt, and the power is transmitted to the wheel hub 3-1 through the inner gear ring 3-2-1, so that the power output is completed.

The electric motor 1-1 is symmetrically arranged at two sides of the two power input gears 1-2-1, when the road conditions at two sides are the same and the steering is not needed, the planetary gear 1-2-4 does not rotate, and the power is transmitted to the power output shafts 2-6 at two sides by the intermediate gear 1-2-2 and the half shaft gear 1-2-3; when the speeds of wheels at two sides are different due to road condition reasons or steering requirements, the planetary gears 1-2-4 start to work under the driving of the half shaft gears 1-2-3, and the differential transmission of power to two sides is realized.

The planet carrier 3-2-4 and the shell of the wheel-side planetary reducer 3-2 are fixed together and cannot rotate; the inner gear ring 3-2-1 is fixed with the hub 3-1 and is used for outputting power; the power transmitted by the power transmission part is transmitted to the sun gear 3-2-3 through the power output shaft 2-6, and then transmitted to the hub 3-1 after being decelerated through the sun gear 3-2-3, the planet gear 3-2-2 and the inner gear ring 3-2-1, so that the whole power transmission process is completed.

The power transmission part also comprises a second sheet metal shell 2 which is fixed on the support plate and used for covering the rolling bearing 2-1, the central driving gear 2-2, the driven gear I2-4 and the conveyor belt 2-5.

The power input part also comprises a first sheet metal shell 1 which is fixed on the differential gear case 1-2 and covers the differential gear case.

And a third sheet metal shell 3 for covering the wheel-side planetary reducer 3-2 is arranged on the wheel-side planetary reducer.

An auxiliary driven wheel is fixedly embedded in the power output shaft 2-6 and is rotatably connected to the support plate through a bearing sleeve, and the auxiliary driven wheel is in transmission connection with the driven gear I2-4 through a transmission belt 2-5.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A wheel type chassis driven by double motors is characterized by comprising a power input part arranged in the middle of the chassis and two power transmission parts symmetrically arranged on two sides of the chassis;

the power input part comprises a differential gear box (1-2), two central transmission shafts (1-3) of the differential gear box (1-2) are respectively connected with a gear transmission system for providing kinetic energy for the differential gear box, the gear transmission system comprises an intermediate gear (1-2-2) which is embedded and fixed on the central transmission shafts (1-3), a power input gear (1-2-1) which is rotatably connected on a gear box shell (1-2-5) and meshed with the intermediate gear (1-2-2), and an electric motor (1-1) which is fixed on the gear box shell (1-2-5) and provides kinetic energy for the power input gear (1-2-1);

the power transmission part comprises a support plate, the support plate is rotatably connected with a central transmission shaft (1-3) through a rolling bearing (2-1), two ends of the support plate are symmetrically and rotatably connected with two power output shafts (2-6), the power output shafts (2-6) are in transmission connection with driven gears I (2-4) through a conveyor belt (2-5), and the two driven gears I (2-4) are both meshed with the central driving gear (2-2) on the central transmission shaft (1-3);

the power output shaft (2-6) is embedded into a sun gear (3-2-3) of the wheel-side planetary reducer (3-2) to transmit power, an inner gear ring (3-2-1) of the wheel-side planetary reducer (3-2) is fixed with a wheel hub (3-1) through a bolt, and the inner gear ring (3-2-1) transmits power to the wheel hub (3-1) to complete power output.

2. The dual-motor driven wheeled chassis of claim 1, wherein said power transmission portion further comprises a second sheet metal housing (2) fixed to the support plate for covering the rolling bearing (2-1), the central driving gear (2-2), the driven gear i (2-4) and the conveyor belt (2-5).

3. A two-motor-driven wheeled chassis according to claim 1, characterized in that said power input portion further comprises a first sheet metal housing (1) covering and secured to the differential case (1-2).

4. The dual-motor-driven wheel chassis according to claim 1, characterized in that the wheel-side planetary reducer (3-2) is provided with a third sheet metal shell (3) for covering the wheel-side planetary reducer.

5. The dual-motor driven wheel type chassis as claimed in claim 1, wherein a secondary driven wheel is fixed on the power output shafts (2-6) in a nested mode and is rotatably connected to the support plate through a bearing sleeve, and the secondary driven wheel is in transmission connection with the driven gear I (2-4) through a conveyor belt (2-5).

6. A dual motor driven wheeled chassis according to claim 1, characterized in that the transmission ratio between the central driving gear (2-2) and the driven gear i (2-4), and between the driven gear i (2-4) and the power take-off shaft (2-6) is 1.