CN113997741A

CN113997741A - Wheel assembly and electric automobile chassis

Info

Publication number: CN113997741A
Application number: CN202111305521.4A
Authority: CN
Inventors: 张伟; 李娜
Original assignee: Hubei Emotion Robot Technology Co ltd
Current assignee: Hubei Emotion Robot Technology Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-02-01

Abstract

The invention relates to the technical field of electric automobiles, and discloses a wheel assembly and an electric automobile chassis. The invention has the following advantages and effects: the wheel assemblies are arranged on the chassis of the electric automobile, each wheel assembly can independently steer, the steering is flexible, the degree of freedom is high, the chassis is stable in ground form and good in balance, and the wheel assemblies can be used as a sweeper, a logistics vehicle, a wharf vehicle, a take-out vehicle and the like.

Description

Wheel assembly and electric automobile chassis

Technical Field

The invention relates to the technical field of electric automobiles, in particular to a wheel assembly and an electric automobile chassis.

Background

The electric automobile takes a vehicle-mounted power supply as power, and the wheels are driven by the motor to run, so that the electric automobile has the advantages of no pollution and low noise, and has smaller influence on the environment compared with the traditional automobile. For example, the chinese utility model with the granted publication number CN213501724U discloses an electric vehicle chassis with four wheels independently driven and steered, which adopts an up-down swing mechanism to realize the instant adjustment of the height of the chassis on uneven ground. The utility model discloses a chinese utility model patent that grant publication number is CN205615576U discloses an automobile chassis assembly with four-wheel limit motor drive and four-wheel independent steering, including frame, steering motor, spring damper assembly, its spring damper assembly realizes the shock attenuation through the damping spring of vertical setting, and this just needs the size, the great damping spring of elasticity to come to support and the shock attenuation to automobile chassis, can cause that wheel shock attenuation volume is too big, automobile chassis is higher, influences the stability that electric automobile went.

Disclosure of Invention

The object of the present invention is to provide a wheel assembly having a small volume.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a wheel assembly, include the connecting seat, set up in the side mount pad of connecting seat both sides, be located two wheel device between the side mount pad, wheel device is equipped with the pivot, the pivot both ends are rotated and are connected with the shock attenuation connecting block, every shock attenuation connecting block both sides all articulate there is the gyration arm, the portable connection in gyration arm upper end is in on the side mount pad, be provided with damping spring one on the side mount pad, a damping spring elasticity acts on in the gyration arm so that the gyration arm supports the side mount pad.

The invention is further provided with: the motion trail of the upper end of the rotary arm on the side mounting seat is horizontal or inclined.

The invention is further provided with: the side mounting base is provided with a cavity and a connecting hole, the connecting hole is communicated with the cavity, the rotary arm penetrates upwards through the connecting hole and then is located in the cavity, the upper end of the rotary arm is rotatably connected with a bearing, and the bearing is located in the cavity.

The invention is further provided with: the side installation seat comprises a first seat body and a second seat body, wherein the first seat body is provided with a first groove body and a second groove body, the second seat body is provided with a third groove body and a fourth groove body, the first groove body and the third groove body are spliced to form the cavity, and the second groove body and the fourth groove body are spliced to form the connecting hole.

Through adopting above-mentioned technical scheme, can connect fixedly through bolt, nut between pedestal one, the pedestal two.

The invention is further provided with: the side mount pad is equipped with and keeps off seat one, keeps off seat two, keep off seat one and be fixed in on the side mount pad, keep off seat one and seted up the through-hole, keep off the activity of seat two set up in the cavity, damping spring one both ends are supported respectively on keeping off seat one, keeping off seat two, it is fixed with the guide bar to keep off seat two, the guide bar passes in proper order damping spring one the through-hole, the bearing supports keep off on the seat two.

Through adopting above-mentioned technical scheme, the guide bar passes damping spring one, through-hole in proper order, can arrive the direction, avoid the effect that damping spring one buckled together to the damping spring who takes place elastic deformation.

The invention is further provided with: and a second damping spring is arranged between the damping connecting block and the side mounting seat.

The invention is further provided with: linear bearing is installed to the side mount pad, the shock attenuation connecting block is fixed with the guide post, the guide post upwards passes linear bearing.

By adopting the technical scheme, the guide post upwards penetrates through the linear bearing, the wheel component does up-and-down jolt movement in the driving process, and the guide post and the linear bearing can play a role in guiding the movement of the wheel component.

The invention is further provided with: the first damping spring is horizontally placed or obliquely placed, and the second damping spring is vertically placed.

The invention is further provided with: the wheel device comprises a hub, a hub motor and a tire, wherein the hub motor is arranged on the hub, and the tire is arranged on the hub.

Another object of the present invention is to provide an electric vehicle chassis, which includes a chassis, and the chassis is equipped with a plurality of the above wheel assemblies and a power supply.

The invention has the beneficial effects that:

1. according to the invention, the shock absorption connecting block is arranged at the rotating shaft of the wheel device, the elastic force of the first shock absorption spring acts on the rotary arm, and the rotary arm plays a supporting role between the wheel device and the connecting seat, so that the first shock absorption spring does not need to be vertically arranged, and can be horizontally arranged or obliquely arranged to meet the shock absorption requirement, so that the overall height of the wheel assembly is reduced, the structure is compact, and the volume is reduced. When the wheel assembly is applied to the electric automobile chassis, the height of the electric automobile chassis from the ground is very low, and the application scenes of the electric automobile can be widened, such as unmanned electric automobiles for logistics and delivery.

2. The first damping spring and the second damping spring are arranged to damp together, so that the size of the second damping spring can be reduced properly, and meanwhile, the second damping spring can also play a supporting role between the wheel device and the connecting plate.

3. The wheel assemblies are arranged on the chassis of the electric automobile, each wheel assembly can independently steer, the steering is flexible, the degree of freedom is high, the chassis is stable in ground form and good in balance, and the wheel assemblies can be used as a sweeper, a logistics vehicle, a wharf vehicle, a take-out vehicle and the like.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a positional relationship between a chassis and a power source in embodiment 1.

Fig. 2 is a schematic view of the positional relationship between the chassis and the wheel assembly of embodiment 1.

Fig. 3 is a schematic view of the positional relationship between the side mount and the wheel apparatus of embodiment 1.

Fig. 4 is a schematic view of the connection relationship among the damping connection block, the swing arm, the first damping spring, the second damping spring, and the side mount in embodiment 1.

Fig. 5 is a schematic view showing a positional relationship among the shock-absorbing connecting block, the guide post, and the linear bearing of embodiment 1.

Fig. 6 is a schematic structural diagram of the first seat body of embodiment 1.

Fig. 7 is a schematic structural view of the second seat body of embodiment 1.

In the figure, 1, a connecting seat; 2. a side mount; 21. a first seat body; 211. a first tank body; 212. a second tank body; 22. a second seat body; 221. a third tank body; 222. a fourth tank body; 23. a cavity; 24. connecting holes; 25. a first blocking seat; 251. a through hole; 26. a second blocking seat; 27. a guide bar; 28. a linear bearing; 3. a wheel device; 31. a hub; 32. a hub motor; 33. a tire; 34. a rotating shaft; 4. a shock absorption connecting block; 41. a guide post; 5. a swivel arm; 51. a bearing; 6. a first damping spring; 7. a second damping spring; 8. a rotation driving device; 9. a chassis; 91. a power source.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Example 1: the utility model provides an electric automobile chassis, as shown in fig. 1 to 3, includes chassis 9, installs power 91, four wheel assemblies on chassis 9, and power 91 is the lithium cell group, and the wheel assembly includes rotation driving device 8, connecting seat 1, wheel device 3, and rotation driving device 8 installs on chassis 9, and it includes DC brushless motor, and the lithium cell group supplies power for DC brushless motor. The rotation driving device 8 is connected with the connecting seat 1 and can drive the connecting seat 1 to rotate. The connecting seat 1 is positioned below the chassis 9, and the wheel device 3 is positioned below the connecting seat 1.

As shown in fig. 3 to 6, side mounting seats 2 are fixed on both sides of the connecting seat 1, and the wheel device 3 is located between the two side mounting seats 2. The wheel device 3 comprises a wheel hub 31, a wheel hub motor 32 installed on the wheel hub 31 and a tire 33, and the lithium battery pack supplies power to the wheel hub motor 32. There is pivot 34 in the middle of wheel device 3, and pivot 34 both ends are all rotated and are connected with shock attenuation connecting block 4, and every shock attenuation connecting block 4 both sides all articulate has slewing arm 5, and slewing arm 5 upper end is rotated and is connected with bearing 51. The side mounting base 2 is provided with a cavity 23 and a connecting hole 24, the cavity 23 is horizontally arranged, and the connecting hole 24 is located on the lower end face of the side mounting base 2 and is communicated with the cavity 23. The rotary arm 5 passes through the connecting hole 24 upwards and is positioned in the cavity 23, and the bearing 51 is positioned in the cavity 23. The cavity 23 is internally provided with a second blocking seat 26, the second blocking seat 26 can horizontally move in the cavity 23, and the bearing 51 at the upper end of the rotating arm 5 is abutted against the second blocking seat 26. The side mounting base 2 is further fixed with a first blocking base 25, the first blocking base 25 is located at the opening of the cavity 23, a first damping spring 6 is arranged between the first blocking base 25 and the second blocking base 26, and the first damping spring 6 is horizontally arranged. The second baffle seat 26 is fixed with a guide rod 27, the first baffle seat 25 is provided with a through hole 251, and the guide rod 27 sequentially penetrates through the first damping spring 6 and the through hole 251. The elastic force of the two first damping springs 6 drives the two rotary arms 5 to be close to support the side mounting seats 2 respectively.

As shown in fig. 6 and 7, the side mounting base 2 includes a first base body 21 and a second base body 22, the first base body 21 is provided with a first groove body 211 and a second groove body 212, the second base body 22 is provided with a third groove body 221 and a fourth groove body 222, and the first base body 21 and the second base body 22 are connected and fixed through bolts and nuts. The first groove body 211 and the third groove body 221 are spliced to form the cavity 23, and the second groove body 212 and the fourth groove body 222 are spliced to form the connecting hole 24. The first blocking seat 25 is fixed on the first seat body 21 and the second seat body 22 through bolts.

As shown in fig. 4 and 5, a second damping spring 7 is arranged between the damping connecting block 4 and the side mounting seat 2, and the second damping spring 7 is vertically arranged. A guide post 41 is fixed on the shock absorption connecting block 4, a linear bearing 28 is fixed on the side mounting base 2, the guide post 41 penetrates through the linear bearing 28, a shock absorption spring II 7 is sleeved on the guide post 41, the upper end of the shock absorption spring II abuts against the linear bearing 28, and the lower end of the shock absorption spring II abuts against the shock absorption connecting block 4.

The lithium battery pack on the electric automobile chassis 9 supplies power to the hub motor 32 and the rotary driving device 8, and the rotary driving device 8 drives the wheel device 3 to turn by driving the connecting seat 1 to rotate. The hub motor 32 drives the hub 31 to rotate.

Example 2: an electric automobile chassis 9 is different from the embodiment 1 in that more than 5 wheel assemblies are installed on the chassis 9, a cavity 23 is obliquely arranged, and a first damping spring 6 is obliquely arranged.

Claims

1. The utility model provides a wheel assembly, including connecting seat (1), set up in side mount pad (2) of connecting seat (1) both sides, be located two wheel device (3) between side mount pad (2), its characterized in that: wheel device (3) are equipped with pivot (34), pivot (34) both ends are rotated and are connected with shock attenuation connecting block (4), every shock attenuation connecting block (4) both sides all articulate there is slewing arm (5), but slewing arm (5) upper end portable connection is in on side mount pad (2), be provided with damping spring (6) on side mount pad (2), damping spring (6) elasticity acts on in slewing arm (5) are last so that slewing arm (5) support side mount pad (2).

2. A wheel assembly according to claim 1, wherein: the motion trail of the upper end of the rotary arm (5) on the side mounting base (2) is horizontal or inclined.

3. A wheel assembly according to claim 1 or 2, wherein: cavity (23), connecting hole (24) have been seted up in side mount pad (2), connecting hole (24) with cavity (23) are linked together, revolving arm (5) upwards pass behind connecting hole (24) be located in cavity (23), revolving arm (5) upper end is rotated and is connected with bearing (51), bearing (51) are located in cavity (23).

4. A wheel assembly according to claim 3, wherein: the side mounting seat (2) comprises a first seat body (21) and a second seat body (22), a first groove body (211) and a second groove body (212) are formed in the first seat body (21), a third groove body (221) and a fourth groove body (222) are formed in the second seat body (22), the first groove body (211) and the third groove body (221) are spliced to form the cavity (23), and the second groove body (212) and the fourth groove body (222) are spliced to form the connecting hole (24).

5. A wheel assembly according to claim 3, wherein: side mount pad (2) are equipped with and keep off seat one (25), keep off seat two (26), keep off seat one (25) and be fixed in on side mount pad (2), keep off seat one (25) and seted up through-hole (251), keep off seat two (26) activity set up in cavity (23), damping spring one (6) both ends support respectively on keeping off seat one (25), keeping off seat two (26), keep off seat two (26) and be fixed with guide bar (27), guide bar (27) pass in proper order damping spring one (6) through-hole (251), bearing (51) support keep off on seat two (26).

6. A wheel assembly according to claim 1, wherein: and a second damping spring (7) is arranged between the damping connecting block (4) and the side mounting seat (2).

7. A wheel assembly according to claim 1 or 6, wherein: linear bearing (28) are installed in side mount pad (2), shock attenuation connecting block (4) are fixed with guide post (41), guide post (41) upwards pass linear bearing (28).

8. The wheel assembly of claim 6, wherein: the damping spring I (6) is horizontally placed or obliquely placed, and the damping spring II (7) is vertically placed.

9. A wheel assembly according to claim 1 or 2, wherein: still include rotation driving device (8), rotation driving device (8) with connecting seat (1) link to each other, wheel device (3) include wheel hub (31), install wheel hub motor (32), tire (33) of wheel hub (31).

10. An electric automobile chassis which characterized in that: comprising a chassis (9), said chassis (9) being fitted with a plurality of wheel assemblies, power supplies (91) as claimed in any one of claims 1 to 9.