CN113997781A

CN113997781A - Vehicle driving device, driving system and vehicle

Info

Publication number: CN113997781A
Application number: CN202111518696.3A
Authority: CN
Inventors: 张福清
Original assignee: Apollo Intelligent Connectivity Beijing Technology Co Ltd
Current assignee: Apollo Intelligent Connectivity Beijing Technology Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-02-01

Abstract

The present disclosure provides a driving apparatus, a driving system and a vehicle of a vehicle, relating to the technical field of vehicles, and more particularly to the field of automatic driving and the field of driving tests. A drive device for a vehicle includes: a motor; the power transmission assembly is connected with an output shaft of the motor and wheels of the vehicle and is configured to transmit power provided by the motor to the wheels so as to drive the wheels to rotate; a first mounting plate configured to mount the motor to a frame of a vehicle; and the shock absorption assembly comprises a rotating shaft fixedly connected with the first mounting plate and a rotating arm connected with the rotating shaft, and the rotating arm is configured to rotate by taking the rotating shaft as the rotating shaft. Wherein, the extending direction of the rotating shaft is vertical to the direction in which the power transmission assembly drives the wheels to rotate.

Description

Vehicle driving device, driving system and vehicle

Technical Field

The present disclosure relates to the field of vehicle technologies, and in particular, to the field of automatic driving and the field of driving tests, and more particularly, to a driving apparatus, a driving system, and a vehicle for a vehicle.

Background

With the development of electronic technology and network technology, the automatic driving technology has become one of the important development directions in the internet field and the vehicle field. Mature autopilot technique can liberate driver's both hands, can also reduce to a certain extent and avoid even traffic accident. Before the automated driving vehicle leaves the factory, a large amount of tests and experiments are generally required to ensure the reliability of the automated driving technology.

Disclosure of Invention

A drive device of a vehicle, a drive system of the vehicle, and the vehicle are provided that facilitate testing of an autonomous vehicle.

One aspect of the present disclosure provides a driving apparatus of a vehicle, including: a motor; the power transmission assembly is connected with an output shaft of the motor and wheels of the vehicle, and is configured to transmit power provided by the motor to the wheels so as to drive the wheels to rotate; a first mounting plate configured to mount the motor to a frame of a vehicle; and the shock absorption assembly comprises a rotating shaft fixedly connected with the first mounting plate and a rotating arm connected with the rotating shaft, and the rotating arm is configured to rotate by taking the rotating shaft as the rotating shaft. Wherein, the extending direction of the rotating shaft is vertical to the direction in which the power transmission assembly drives the wheels to rotate.

Another aspect of the present disclosure provides a driving system of a vehicle, including: a drive wheel arrangement comprising a hub and a drive wheel; and a drive device connected with a hub of the at least one drive wheel device, wherein the drive device is a drive device of a vehicle provided by the present disclosure.

Another aspect of the present disclosure provides a vehicle including at least one drive system of the vehicle provided by the present disclosure.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

fig. 1 is a schematic view of a driving apparatus, a driving system and an application scenario of a vehicle according to an embodiment of the present disclosure;

FIG. 2 is a schematic block diagram of a drive system of a vehicle according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a drive wheel assembly according to an embodiment of the present disclosure;

fig. 4 is a schematic structural view of a drive device of a vehicle according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a power transmission assembly according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a shock assembly according to an embodiment of the present disclosure;

fig. 7 is a schematic configuration diagram of a driving apparatus of a vehicle according to another embodiment of the present disclosure;

fig. 8 is an exploded view of the structure of a drive device of a vehicle according to an embodiment of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The present disclosure provides a driving apparatus of a vehicle, which includes a motor, a power transmission assembly, a first mounting plate, and a damping assembly. The power transmission assembly is connected with an output shaft of the motor and wheels of the vehicle, and the power transmission assembly is configured to transmit power provided by the motor to the wheels so as to drive the wheels to rotate. The first mounting plate is configured to mount the motor to a frame of a vehicle. The shock absorption assembly comprises a rotating shaft fixedly connected with the first mounting plate and a rotating arm connected with the rotating shaft, and the rotating arm is configured to rotate by taking the rotating shaft as a rotating shaft. Wherein, the extending direction of the rotating shaft is vertical to the direction in which the power transmission assembly drives the wheels to rotate.

The driving device, the driving system and the application scenario of the vehicle provided by the present disclosure will be described below with reference to fig. 1.

Fig. 1 is a schematic view of a driving device, a driving system and an application scenario of a vehicle according to an embodiment of the present disclosure.

As shown in fig. 1, the application scenario 100 includes a test target vehicle 110 and an autonomous vehicle 120.

In the application scenario 100, the autonomous driving vehicle 120 may be a vehicle before shipment or a vehicle that needs to be repaired after shipment. When the autonomous vehicle 120 is tested, the test target vehicle 110 may be used as a vehicle running on a simulated road to test the functions of the autonomous vehicle 120 such as obstacle avoidance.

For example, the target vehicle 110 may be disposed on a road on which the autonomous vehicle 120 is located to test whether the autonomous vehicle 120 may automatically change lanes when traveling to the vicinity of the target vehicle 110, or may decelerate, etc., to implement an autonomous driving safety test, etc.

According to an embodiment of the present disclosure, the test target vehicle 110 may be, for example, a robot that automatically travels on the ground, and the test target vehicle 110 may reach a designated speed by being driven by a motor. For example, the embodiment may set a driving path for the target vehicle 110 in the background in advance, and the target vehicle 110 may drive according to the driving path to simulate the vehicle in the actual road condition. Alternatively, the target vehicle 110 may be used in an object transportation scenario to transport a damaged target vehicle, or any object that may be carried by the target vehicle 110. For example, the test target car 110 may also function as an intelligent handling robot.

In one embodiment, the test target 110 may include, for example, a frame, a deck, a drive system, a brake system, a power system, a control system, etc. The driving system may be used to drive the test target vehicle 110, and change the driving speed and the driving direction. The drive system may include, for example, a power drive system and a steering drive system.

For example, the fuselage frame may be a chassis frame of a vehicle, and the chassis frame may be configured to control the vehicle height of the test target vehicle 110 within 20cm, for example. The fuselage frame may, for example, be provided with mounting locations for various components included in other systems in the test target vehicle 110 in addition to the fuselage cover. For example, a steering wheel mounting location, a driving wheel mounting location, a motor mounting location, a main electric device mounting location, a central controller mounting location, a GPS antenna mounting location, a battery mounting location, and the like may be provided. The frame of the machine body can also be provided with a plurality of wiring holes for penetrating communication lines, electric wires and the like among electronic devices in each assembly. The chassis frame can be provided with reinforcing ribs for improving the pressure resistance of the test target vehicle and prolonging the service life of the test target vehicle.

For example, the fuselage cover may be removably attached to the fuselage frame for covering components mounted in various mounting locations in the fuselage frame to protect the components mounted in the various mounting locations from wind, rain, and the like. The cover plate of the machine body can be of an integrally formed structure, and can also be formed by splicing a plurality of cover plates.

For example, the braking system may include, for example, brake cables, sensors, couplings, motors, and the like. The braking system can provide friction force to the driving wheel or the steering wheel under the action of a motor included in the braking system, so that the driving wheel or the steering wheel is blocked from rotating, and braking is achieved.

For example, the power system may include battery modules, relays, power modules, and the like for providing power to the electronics in the test target vehicle 110. Under the action of the power supply system, each electronic device in the test target vehicle 110 can operate, and the running of the test target vehicle is realized. The power module may be used to convert the voltage provided by the battery module into a voltage suitable for each electronic device.

For example, the control system may include a communication module, a central controller, a motor drive, a rotary encoder, a combination navigation device, and the like. The control system can realize the control and track self-definition of the test target car 110 through a control algorithm.

In one embodiment, the test target vehicle can comprise a driving system of the vehicle provided by the disclosure, and the driving system is used for driving the test target vehicle to run. It is understood that the drive system of the vehicle provided by the present disclosure may be, for example, a steering drive system, and may also be a power drive system. The drive system of the vehicle can be applied to any type of vehicle other than the test target.

Correspondingly, the present disclosure also provides a vehicle including the driving system of the vehicle. The vehicle may include one or more drive systems. For example, a vehicle may include two drive systems of a vehicle provided by the present disclosure, each drive system may include one drive wheel arrangement and one drive arrangement to effect driving of a single wheel. Alternatively, the vehicle may comprise four drive systems of the vehicle provided by the present disclosure, two of which are used to effect drive to two powered drive wheels, and two of which are used to effect drive to two steerable drive wheels.

The drive system of the vehicle provided by the present disclosure will be described in detail below with reference to fig. 2 to 3.

Fig. 2 is a schematic structural diagram of a drive system of a vehicle according to an embodiment of the present disclosure.

As shown in fig. 2, a driving system 200 of the vehicle includes a driving wheel device 210 and a driving device 220, and the driving device 220 is connected to the driving wheel device 210.

In an embodiment, the driving wheel device 210 may include a wheel hub and a driving wheel, and the driving device 220 may include a motor, and the embodiment may fixedly connect an output shaft of the motor with the wheel hub. So, when the motor operation, the output shaft of motor can drive the wheel hub and rotate for wheel hub drives the drive wheel and rotates. The driving wheel can be sleeved on the wheel hub and fixedly connected with the wheel hub.

In one embodiment, the driving device 220 may further include a speed reducer, for example, in addition to the motor, for matching the rotation speed and transmitting the torque between the motor and the hub. In this case, the input shaft of the speed reducer is connected to the output shaft of the motor, and the output shaft of the speed reducer is connected to the hub.

In an embodiment, the driving device 220 may adopt the driving device of the vehicle provided by the present disclosure, and the specific structure may be referred to the following description, which is not described in detail herein.

The embodiment can adopt a single driving device to drive a single power driving wheel, so that the condition that a plurality of power driving wheels in the vehicle cannot rotate due to the failure of the driving device can be avoided. That is, it is advantageous to improve the driving reliability of the vehicle employing the driving system of the embodiment of the present disclosure.

In one embodiment, the driving wheel of the driving wheel device can brake by adopting a disc brake principle. The disc brake is also called as a disc brake, and the brake caliper is pushed by a hydraulic pump so as to clamp a brake pad and generate friction force to a driving wheel, thereby achieving the braking effect. When the disc brake principle is adopted for braking, an external brake system can be adopted, so that the ventilation and heat dissipation effects are good, and locking is not easy. However, the method cannot achieve the self-locking high braking force no matter how to increase the braking force.

In one embodiment, the driving wheel of the driving wheel device can brake by using a drum brake principle. In order to facilitate braking, the driving wheel apparatus according to the embodiment of the present disclosure will be described in detail with reference to fig. 3.

Fig. 3 is a schematic structural view of a drive wheel device according to an embodiment of the present disclosure.

As shown in fig. 3, in this embodiment 300, the driving wheel device 310 may include a driving wheel 311, a wheel hub 312, two

drum brake sheets

3131, 3132, a rotation shaft 314, a fixing shaft 315, and a wire pulling rod 316.

The drum brake sheet 3131 and the drum brake sheet 3132 are oppositely disposed between the driving wheel 311 and the hub 312. Specifically, the hub 312 is sandwiched in a space surrounded by the drum brake sheet 3131 and the drum brake sheet 3132, and the driving wheel 311 is sleeved on the peripheries of the drum brake sheet 3131 and the drum brake sheet 3132.

In an embodiment, the driving wheel 311 may include a tire, a rim and a spoke, and the portion of the hub 312 protruding from the two drum brake sheets may be fixedly connected to the spoke, so as to drive the driving wheel 311 to rotate.

Wherein, the rotating shaft 314 and the fixing shaft 315 are used for fixing the two drum brake pieces so that the two drum brake pieces can be fixed together. Specifically, the rotation shaft 314 may sandwich a first end of the drum brake sheet 3131 and a first end of the drum brake sheet 3132, the first end of the drum brake sheet 3131 and the first end of the drum brake sheet 3132 being close to each other. The fixing shaft may be interposed between a second end of the drum brake sheet 3131 and a second end of the drum brake sheet 3132, the second ends of the drum brake sheet 3131 and the drum brake sheet 3132 being close to each other.

The wire pulling rod 316 is fixedly connected to the rotating shaft 314 and is fixedly connected to a brake cable of the vehicle. Thus, the brake cable can rotate the cable pulling rod 316 and the rotating shaft 314 when the brake cable is tensioned. By rotating the rotating shaft 314, for example, a thrust force can be generated to the two drum brake pieces, so that the distance between the two first ends of the two drum brake pieces is increased, and the friction force between the two drum brake pieces and the driving wheel is increased. In contrast, when the brake cable is released, the cable pulling rod 316 and the rotating shaft 314 are rotated by the brake cable, so that the distance between the two first ends of the two drum brake pads is reduced, thereby reducing the friction force between the two drum brake pads and the driving wheel 311.

In one embodiment, as shown in fig. 3, the rotation shaft 314 is sandwiched between the drum brake sheet 3131 and the drum brake sheet 3132, and may have different sizes in different directions. When the rotating shaft 314 and the wire pulling rod 316 are installed, the brake cable in the released state and the wire pulling rod 316 can be fixedly connected, and two surfaces of the rotating shaft 314 perpendicular to the direction with the smaller size are respectively contacted with two first ends. Thus, when the brake cable is pulled, the distance between the two first ends can be increased by driving the rotation shaft 314 to rotate.

The drum brake piece, the rotating shaft and the pull rod are adopted in the embodiment of the disclosure, so that the brake of the driving wheel can be realized in a narrow space. Therefore, the space size required by the driving system with the braking function can be effectively reduced, and the miniaturization and flattening design of the test target car is facilitated.

The driving apparatus of the vehicle provided by the present disclosure will be described in detail below with reference to fig. 4 to 7.

Fig. 4 is a schematic structural diagram of a drive device of a vehicle according to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, as shown in fig. 4, a driving apparatus 420 of a vehicle may include a motor 421, a power transmission assembly 422, a first mounting plate 423, and a shock absorbing assembly 424.

According to an embodiment of the present disclosure, the motor 421 may be, for example, a driving motor. Specifically, the motor 421 may be a permanent magnet dc servomotor, a permanent magnet wound-rotor dc motor, a permanent magnet brushless dc servomotor, or the like. The motor 421 can be any type of motor according to practical requirements.

According to the embodiment of the present disclosure, the power transmission assembly 422 is connected to an output shaft of the motor, i.e., a wheel of the vehicle, and the power transmission assembly 422 can transmit the power provided by the motor to the wheel to drive the wheel to rotate.

In one embodiment, the power transmission assembly 422 may include a coupling, the two ends of which are respectively connected to the output shaft of the motor and the hub of the wheel (for example, the hub included in the driving wheel device described above).

In another embodiment, the power transmission assembly 422 may employ a combination synchronizing wheel and drive belt configuration. In this embodiment, there should be at least two synchronizing wheels, and one of the at least two synchronizing wheels is connected to the output shaft of the motor, and one synchronizing wheel is connected to the hub of the wheel. The at least two synchronous wheels rotate approximately synchronously under the transmission action of the synchronous belt. It is understood that the power transmission assembly 422 is illustrated in fig. 4 as a combined structure of a timing wheel and a transmission belt, but the structure of the power transmission assembly 422 is merely an example to facilitate understanding of the present disclosure, and the present disclosure is not limited thereto.

According to an embodiment of the present disclosure, the first mounting plate 423 may be used to mount the motor 421 to a frame of a vehicle. For example, the frame of the vehicle may be the fuselage frame described above. Specifically, the motor 421 may be mounted on the motor mounting position of the body frame via the first mounting plate 423. The first mounting plate 423 may be connected to a reinforcing rib of the body frame by a connector such as a screw or a nut.

According to an embodiment of the present disclosure, as shown in fig. 4, the damper assembly 424 may include, for example, a rotation shaft 4241 fixedly connected to the first mounting plate 423 and a rotation arm 4242 connected to the rotation shaft 4241, and the rotation arm 4242 may rotate about the rotation shaft 4241 as a rotation axis.

The extending direction of the rotating shaft 4241 may be perpendicular to the direction in which the power transmission assembly 422 drives the wheel to rotate. Thus, when the wheels bump up and down due to the uneven road surface, the first mounting plate 423 is connected to the vehicle frame, and the transmission shaft 4241 is connected to the first mounting plate 423, so that the bump of the vehicle frame along with the wheels can be reduced by the rotation of the rotating arm 4242 relative to the rotating shaft 4241. That is, adopt the drive arrangement of this disclosed embodiment, can reduce the degree that the vehicle body shakes because of road surface unevenness leads to in the vehicle driving to bring the shock attenuation effect for the vehicle.

The structure of the power transmission assembly in one embodiment of the drive apparatus for a vehicle provided by the present disclosure will be described in detail below with reference to fig. 5.

Fig. 5 is a schematic structural diagram of a power transmission assembly according to an embodiment of the disclosure.

As shown in fig. 5, the power transmission assembly 522 in this embodiment may include two synchronizing

wheels

5221, 5222 and a conveyor belt 5223.

The synchronizing

wheels

5221 and 5222 are arranged in a horizontal direction perpendicular to the output shaft of the motor, the synchronizing wheels 5221 are connected with the output shaft of the motor, and the synchronizing wheels 5222 are connected with the wheels. Specifically, the synchronizing wheel 5222 can be connected with the hub of the wheel.

In one embodiment, the synchronizing wheel 5222 can be connected to the hub of the wheel via the transmission bearing 5224, thereby increasing the stability of the connection, reducing the friction coefficient during transmission, and ensuring the accuracy of the rotation. Specifically, the axle of the synchronizing wheel 5222 is connected with the drive bearing, and the hub sleeve of the wheel is disposed on the drive bearing, thereby achieving the connection of the synchronizing wheel 5222 with the wheel.

According to an embodiment of the present disclosure, the conveyor belt 5223 may be sleeved over two synchronizing

wheels

5221, 5222. Thus, when the synchronizing wheel 5221 is driven by the output shaft of the motor to rotate, the synchronizing wheel 5221 can drive the synchronizing wheel 5222 to rotate through the conveyor belt 5223 by means of the friction force between the conveyor belt 5223 and the synchronizing wheel, so that the synchronizing wheel 5222 drives the wheels to rotate.

According to an embodiment of the present disclosure, as shown in fig. 5, the driving apparatus of the vehicle may further include a second mounting plate, which may include a mounting plate 5251 and a mounting plate 5252, the mounting plate 5252 being disposed adjacent to the motor, and the mounting plate 5251 being disposed adjacent to the shock-absorbing assembly and the wheel. The power transmission assembly 522 is sandwiched between the mounting

plates

5251 and 5252. The mounting

plates

5251 and 5252 may be provided with positioning holes for positioning the mounting positions of the transmission bearings, connectors, and the like. The mounting

plates

5251 and 5252 may be coupled via a plurality of connectors 526, thereby securely sandwiching the power transfer assembly 522 between the two mounting plates. The connecting member 526 may be, for example, a bushing, etc., which is not limited in this disclosure.

According to an embodiment of the present disclosure, as shown in fig. 5, the driving apparatus of the vehicle may further include a brake cable fixing clip 527 for fixing the brake cable connected to the pull rod described above, thereby preventing additional friction from being caused to the power transmission due to the disorder of the wiring of the brake cable. The brake wire fixing clip 527 may be mounted to the mounting plate 5251, for example, at a position that ensures that it does not contact the belt. The brake cable can be closely attached to the mounting plate 5251 and can be prevented from contacting the synchronizing wheel and the conveyor belt via the brake cable fixing clip 527.

The structure of the shock absorbing assembly in an embodiment of the driving apparatus of a vehicle provided by the present disclosure will be described in detail below with reference to fig. 6.

FIG. 6 is a schematic structural diagram of a shock assembly according to an embodiment of the present disclosure.

According to the embodiment of the disclosure, the elastic member can be used as the rotating arm, so that the damping effect is further improved.

For example, as shown in fig. 6, in this embodiment 600, the pivot arm may include an elastic member such as a spring 62421. The rotation shaft may include two shafts, a shaft 62411 and a shaft 62412, which are located at different positions in a direction perpendicular to the output shaft of the motor, and both ends of the elastic member are connected to the two shafts, respectively, and may rotate with the two shafts as the rotation shaft. For example, the shaft 62411 and the shaft 62412 may both be fixedly connected to the first mounting plate. Therefore, when the wheels bump up and down, the elastic part can be compressed or elongated through the rotation of the elastic part around the two shafts, the force applied by the damping component to the frame of the vehicle is improved, and the damping effect is improved. Meanwhile, after the wheels stop bumping, the distance between the frame and the wheels can be restored to the value before bumping under the action of the elastic force of the elastic part, so that the shock absorption can be conveniently carried out in the subsequent driving process.

In one embodiment, if the power transmission assembly includes two synchronizing wheels, the shaft 62411 of the two shafts may be adjacent to the synchronizing wheel of the two synchronizing wheels that is connected to the wheel, and the shaft 62412 may be adjacent to the synchronizing wheel of the two synchronizing wheels that is connected to the output shaft of the motor. Of the two shafts, when the power transmission assembly is connected to the wheel, one shaft close to the wheel is disposed at a position lower than the other shaft distant from the wheel. So, when the wheel moved to the convex closure department on ground, the one end that the elastic component is close to the wheel was raised, then the both ends of elastic component can be followed two axle rotations for the elastic component is compressed, and the length of elastic component shortens. During the rotation of the elastic member about the axle 62412, the force applied by the elastic member to the axle 62412 includes a force directed downward perpendicular to the ground, which can be applied to the vehicle frame via the first mounting plate, thereby applying a resistance to the vehicle frame following the wheel's jounce, reducing the degree of jounce of the vehicle frame, and achieving shock absorption. Conversely, as the wheel moves into the depression in the ground, the resilient member is stretched and, during rotation of the resilient member about the axis 62412, the force exerted by the resilient member on the axis 62412 includes an upward force normal to the ground that can be applied to the vehicle frame via the first mounting plate to provide resistance to the vehicle frame following the wheel's jounce, reducing the degree of jounce of the vehicle frame and achieving shock absorption.

In one embodiment, two ends of the elastic member may have annular hook structures, and the elastic member is connected with the two shafts through the annular hook structures. Or, the elastic element may be sleeved on two connecting rods, that is, the rotating arm further includes the two connecting

rods

62422, 62423, the two connecting rods are hollow structures, an outer diameter of one connecting rod 62422 in the two connecting rods is matched with an inner diameter of the other connecting rod 62423, one end of the other connecting rod 62423 in the two connecting rods is sleeved outside one connecting rod 62422, and the other ends of the two connecting rods are provided with through holes perpendicular to the length direction of the connecting rods, so as to be respectively inserted into one of the two shafts. This is done. During the rotation of the rotating arm about the two axes, the area where the two connecting rods overlap increases or decreases to elongate or compress the elastic member.

In one embodiment, as shown in fig. 6, the driving apparatus of the vehicle may further include a second mounting plate including two plates having a length greater than or equal to the length of the power transmission assembly. The plate 6252 of the two plates is arranged close to the motor, the plate 6252 is provided with a through hole for penetrating the output shaft of the motor, and the plate 6251 of the two plates is connected with the hub of the wheel, so that the power transmission assembly is clamped between the two plates. Thus, the stable connection between the driving device of the vehicle and the frame can be ensured.

In one embodiment, as shown in fig. 6, the shock absorbing assembly of this embodiment may further include a fixing member in addition to the elastic member. The fixing member may include a first fixing plate 62431 fixedly coupled to the first mounting plate 623 and disposed perpendicular to the first mounting plate 623, and two second fixing plates 62432 parallel to the first fixing plate and aligned in the direction of the output shaft of the motor. The two second fastening plates 62432 are both connected to the first fastening plate. The pivot shaft including the shaft 62412 may be sandwiched between the two second fixing plates. The pivot shaft includes a shaft 62411 fixedly connected to the plate 6251. For example, the shock assembly may further include a support by which the shaft 62411 may be fixedly connected with the plate 6251.

This embodiment can improve the stability of the damper by the arrangement of the damper having the first fixing plate and the second fixing plate, and can increase the degree to which the elastic member is compressed or elongated as the wheel jolts, compared to the manner of fixedly connecting both the shafts to the first mounting plate, because the position of the shaft 62411 is affected by the wheel and the position of the shaft 62412 is affected by the frame. So, can effectively improve the shock attenuation effect.

According to the embodiment of the disclosure, the driving device of the vehicle can be further provided with a heat radiation fan to radiate heat of the motor, so that the service life and the operation stability of the driving device of the vehicle are improved.

Fig. 7 is a schematic structural diagram of a drive device of a vehicle according to another embodiment of the present disclosure.

As shown in fig. 7, in this embodiment, a vehicle drive apparatus 720 includes a heat dissipation fan 728 and a fan mount 729 in addition to a motor 721, a power transmission assembly 722, a first mounting plate 723, and a damper assembly 724.

The cooling fan 728 and the wheel unit 710 may be disposed on different sides of the motor 721. That is, the heat dissipation fan is disposed on a side of the motor 721 away from the wheel. The heat dissipation fan 728 may be disposed near the motor 721 to improve heat dissipation efficiency.

Among other things, the fan mount 729 may be used to mount the cooling fan 728 on the vehicle frame. The fan fixing frame 729 may be fixedly connected to the first mounting plate 723, and a region of the fan fixing frame 729 close to the motor 721 may be further provided with a heat dissipation plate, for example, so as to improve heat dissipation efficiency and uniformity of heat dissipation.

For example, the number of the heat dissipation fans 728 may be selected according to actual requirements. The heat dissipation fan 728 may dissipate heat in an air cooling manner or a liquid cooling manner, for example, the type of the heat dissipation fan may be selected according to actual requirements, which is not limited in this disclosure.

The drive device of the vehicle provided by the present disclosure will be described in its entirety with reference to the structures of fig. 5 to 7.

As shown in fig. 8, in this embodiment, the driving apparatus 820 of the vehicle includes a motor 821, a power transmission assembly, a first mounting plate 823, a shock absorbing assembly, a second mounting plate, a connector 826, a brake wire fixing clip 827, a heat radiation fan 828, and a fan fixing bracket 829.

The first mounting plate 823 is used to fixedly connect the motor 821 to the frame of the vehicle. The first mounting plate 823 is provided between the motor 821 and the power transmission assembly. The first mounting plate 823 may be provided with a through hole, through which an output shaft of the motor 821 may pass and then be connected to the power transmission assembly.

Among other things, the power transfer assembly may include a synchronizing wheel 8221, a synchronizing wheel 8222, and a conveyor belt 8223. The synchronizing wheel 8221 is connected with an output shaft of the motor 821, the synchronizing wheel 8222 can be connected with a hub in the wheel device through a transmission bearing, and the conveyor belt 8223 is sleeved on the two synchronizing wheels. For example, the second mounting plate includes a plate 8251 and a plate 8252, the power transmission assembly 821 is interposed between the plate 8251 and the plate 8252, and the plate 8251 and the plate 8252 are fixedly connected via a connection member 826.

The shock absorbing assembly may include a shaft 8241, a rotating arm 8242, and a fixing member, among others. The shaft 8241 may include a first shaft connected to the first mounting plate 823 and a second shaft connected to the second mounting plate. The rotation arm 8242 may include a spring and two connection rods connected to both ends of the spring, respectively. One of the two connecting rods is rotatably connected with the first shaft, and the other of the two connecting rods is rotatably connected with the second shaft. The fixing member includes a first fixing plate 82431 fixedly connected to the first mounting plate 823 and two second fixing plates 82432. First fixed plate 82431 is perpendicular to first mounting plate 823, and two second fixed plates 82431 and first fixed plate 82431 fixed connection, and perpendicular to first fixed plate 82431 sets up. The first shaft connected to the first mounting plate 823 is fixed between the two second fixing plates.

Wherein, the brake cable fixing clip 827 and second mounting panel fixed connection. The position of the brake wire fixing clip 827 is not limited in this embodiment.

The heat dissipation fan 828 and the fan fixing bracket 829 are disposed on a side of the motor 821 away from the wheel device. The fan fixing bracket 829 is used to fix the heat dissipation fan 828 to the vehicle frame.

Through the arrangement of the driving device of the embodiment, an effective shock absorption effect can be achieved for the vehicle. Therefore, the use experience of the vehicle comprising the driving device can be improved, and the service life of the vehicle can be prolonged. The drive arrangement of this embodiment may be used, among other things, to drive the powered drive wheels of a vehicle, with each drive arrangement driving one powered drive wheel. Therefore, when the vehicle comprises a plurality of power driving wheels, the vehicle cannot run because a single driving device is damaged.

In the technical scheme of the present disclosure, the processes of acquiring, collecting, storing, using, processing, transmitting, providing, disclosing and the like of the personal information of the related user all conform to the regulations of related laws and regulations, and do not violate the good custom of the public order.

The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A drive device of a vehicle, comprising:

a motor;

a power transmission assembly connected to an output shaft of the motor and a wheel of the vehicle, the power transmission assembly configured to transmit power provided by the motor to the wheel to rotate the wheel;

a first mounting plate configured to mount the motor to a frame of the vehicle; and

a shock-absorbing assembly including a rotation shaft fixedly connected with the first mounting plate and a rotation arm connected with the rotation shaft, the rotation arm being configured to rotate with the rotation shaft as a rotation shaft,

the extending direction of the rotating shaft is perpendicular to the direction in which the power transmission assembly drives the wheels to rotate.

2. The apparatus of claim 1, wherein the power transmission assembly comprises:

two synchronizing wheels, wherein the two synchronizing wheels are arranged in a horizontal direction perpendicular to an output shaft of the motor, one synchronizing wheel of the two synchronizing wheels is connected with the output shaft of the motor, and the other synchronizing wheel of the two synchronizing wheels is connected with the wheels; and

the conveying belt is sleeved on the two synchronizing wheels,

wherein the power transmission assembly is configured to: the synchronous wheel rotates under the driving of the motor, and the synchronous wheel drives the other synchronous wheel to rotate through the conveyor belt so as to drive the wheels to rotate.

3. The apparatus of claim 2, wherein the power transmission assembly further comprises:

a drive bearing coupled to the axle of the other synchronizing wheel, the drive bearing configured to be sleeved by the hub of the wheel.

4. The device of claim 1 or 2, wherein the rotational axis comprises two axes; the rotating arm includes:

an elastic member, both ends of the elastic member are respectively connected with the two shafts,

wherein a position at which one of the two axles close to the wheel is disposed is lower than a position at which the other of the two axles far from the wheel is disposed.

5. The apparatus of claim 4, further comprising:

the power transmission assembly comprises a first mounting plate and a second mounting plate, wherein the first mounting plate comprises two plates, and the power transmission assembly is clamped between the two plates;

wherein, damper still includes the mounting, the mounting includes: the motor comprises a first fixing plate fixedly connected with the first mounting plate and vertical to the first mounting plate, and two second fixing plates which are parallel to the first fixing plate and arranged along the direction of an output shaft of the motor and connected with the first fixing plate; and the other shaft of the rotating shafts is clamped between the two second fixing plates, and one shaft of the rotating shafts is fixedly connected with the second mounting plate through a supporting piece.

6. The apparatus of claim 5, further comprising:

and the supporting bearing is used for connecting the second fixing plate close to the second mounting plate and the second mounting plate in the two second fixing plates.

7. The apparatus of claim 1, further comprising:

the heat radiation fan is arranged on one side of the motor, which is far away from the wheel; and

a fan mount configured to mount the heat dissipation fan on the frame.

8. A drive system of a vehicle, comprising:

a drive wheel arrangement comprising a hub and a drive wheel; and

a drive device connected with a hub of the drive wheel device,

wherein the drive device is a drive device of a vehicle according to any one of claims 1 to 7.

9. The system of claim 8, wherein the drive wheel assembly further comprises:

the two drum brake pieces are oppositely arranged between the driving wheel and the hub, and the hub is clamped in a space surrounded by the two drum brake pieces;

the rotating shaft is clamped between the two first ends, close to the two drum brake sheets, of the two drum brake sheets;

the fixed shaft is clamped between the two second ends of the two drum brake sheets, which are close to each other; and

a wire pulling rod fixedly connected with the rotating shaft and fixedly connected with a brake cable of a vehicle,

wherein each drive wheel device is configured to: under the condition that the brake cable is tensioned/released, the brake cable drives the cable pull rod and the rotating shaft to rotate, so that the distance between the two first ends is increased/decreased, and the friction force between the two drum brake sheets and the driving wheel is increased/decreased.

10. A vehicle, comprising: at least one drive system of a vehicle according to any of claims 8 to 9.