CN109050187B - Commercial vehicle, independent suspension structure and suspension support arm - Google Patents

Commercial vehicle, independent suspension structure and suspension support arm Download PDF

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Publication number
CN109050187B
CN109050187B CN201811188501.1A CN201811188501A CN109050187B CN 109050187 B CN109050187 B CN 109050187B CN 201811188501 A CN201811188501 A CN 201811188501A CN 109050187 B CN109050187 B CN 109050187B
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China
Prior art keywords
arm
support arm
branch
suspension
shock absorber
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CN201811188501.1A
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CN109050187A (en
Inventor
吴超
杨浩
吴星
梁卫刚
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Zhejiang PanGood Power Technology Co Ltd
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Zhejiang PanGood Power Technology Co Ltd
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Priority to CN201811188501.1A priority Critical patent/CN109050187B/en
Publication of CN109050187A publication Critical patent/CN109050187A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00Resilient suspensions for a single wheel
    • B60G3/18Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10Type of spring
    • B60G2202/15Fluid spring
    • B60G2202/152Pneumatic spring
    • B60G2202/1524Pneumatic spring with two air springs per wheel, arranged before and after the wheel axis

Abstract

The invention provides a suspension support arm, wherein a support arm main body is connected with a lower cross arm by a lower support arm, an upper support arm is connected with an upper cross arm, and the upper cross arm and the lower cross arm support the support arm main body to form a suspension support structure for a vehicle. Through setting up the support arm including first branch support arm and second branch support arm to set up first bumper shock absorber mount pad and second bumper shock absorber mount pad respectively at the top of first branch support arm and second branch support arm, make the support arm main part support two bumper shock absorbers simultaneously, thereby make the suspension structure of vehicle can constitute the two bumper shock absorber suspension bearing structure that constitute by two bumper shock absorbers, improved the bearing capacity of suspension, improved vehicle travelling comfort, can satisfy the suspension arrangement demand of big load and wide passageway vehicle. The invention also provides an independent suspension structure with the suspension support arm and a commercial vehicle.

Description

Commercial vehicle, independent suspension structure and suspension support arm
Technical Field
The invention relates to the technical field of commercial vehicles, in particular to a commercial vehicle, an independent suspension structure and a suspension support arm.
Background
The suspension is a general name of all force transmission connecting devices between a frame and an axle or wheels of an automobile, and the main function of the suspension is to transmit all force and moment acting between the wheels and the automobile body.
According to different structures, the independent suspension can be divided into an independent suspension and a non-independent suspension, and wheels on each side of the independent suspension are independently arranged below a frame or a vehicle body through elastic suspensions, so that the independent suspension has light sprung mass, reduces the impact received by the vehicle body, improves the adhesive force of the wheels, can reduce the position of an engine, synchronously reduces the center of gravity of the whole vehicle, improves the running stability, and independently jumps left and right wheels of the vehicle, is mutually incoherent, and can reduce the inclination and vibration of the vehicle body.
The double-cross arm independent suspension is taken as a typical independent suspension, besides the advantages, the supporting arm body structure is flexibly designed, the length and arrangement of the upper cross arm and the lower cross arm are matched and adjusted, the middle height of a vehicle can be reduced to the greatest extent, meanwhile, the width of a passageway is increased, the riding space of the vehicle and the convenience of getting on and off the vehicle are improved, and the application of the suspension on the large-load commercial vehicle is more and more emphasized.
In the existing double-cross arm independent suspension using air springs, no matter front suspension and rear suspension, a single-side suspension is only provided with a single air spring as an elastic element, the arrangement form of the single elastic element at the single side is not satisfied, or the arrangement of the chassis of the whole vehicle is influenced due to the overlarge volume of the elastic element.
Therefore, how to meet the suspension arrangement requirements of large-load and wide-aisle vehicles is a current problem that is urgently needed by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a suspension support arm to meet the suspension deployment requirements of large load and wide aisle vehicles; the invention also provides a commercial vehicle and an independent suspension structure.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a suspension support arm comprising a support arm body that supports a suspension assembly, the support arm body comprising an upper arm that connects to an upper cross arm and a lower arm that connects to a lower cross arm;
the upper support arm comprises a first branch support arm and a second branch support arm which extend upwards along the supporting direction of the support arm main body, a first upper cross arm mounting hole is formed in the top of the first branch support arm, and a first shock absorber mounting seat for supporting a first shock absorber is arranged at the supporting end of the first branch support arm;
the top of the second branch arm is provided with a second upper cross arm mounting hole connected with the second upper cross arm, and the support end of the second branch arm is provided with a second shock absorber mounting seat for supporting a second shock absorber.
Preferably, in the suspension support arm described above, the first branch arm and the second branch arm are disposed on the support arm main body back and forth in a vehicle traveling direction.
Preferably, in the suspension support arm, a branch arm reinforcing seat connected between the first branch arm and the second branch arm is provided between the first branch arm and the second branch arm, and a damper mounting hole for supporting a damper is provided on the branch arm reinforcing seat.
Preferably, in the suspension support arm, the first shock absorber mount and the second shock absorber mount are both air bag mounts.
Preferably, in the suspension support arm, a transition piece mounting hole connecting a transition piece of the hub assembly and the brake assembly is provided in a middle portion of the support arm body.
An independent suspension structure comprising a suspension support arm for supporting a suspension assembly, wherein the suspension support arm is any one of the suspension support arms, and a first upper cross arm and a second upper cross arm for towing the support arm main body are respectively erected on the first upper cross arm mounting hole and the second upper cross arm mounting hole; the bottom of the lower support arm is provided with a lower cross arm mounting hole for placing the lower cross arm.
Preferably, in the independent suspension structure, the first damper mounting seat is supported with a first elastic element for supporting the frame, and the second damper mounting seat is supported with a second elastic element for supporting the frame.
Preferably, in the independent suspension structure, the first elastic element and the second elastic element are both air spring dampers.
Preferably, in the independent suspension structure, the lower cross arm includes a lower cross arm front arm and a lower cross arm rear arm extending from the lower cross arm mounting hole toward a front end and a rear end of the vehicle traveling direction, respectively.
The business car comprises a car frame and an independent suspension frame for supporting the car frame, wherein the independent suspension frame is of the independent suspension structure, and a knuckle assembly for supporting a hub assembly and a brake assembly is supported in a transition piece mounting hole of the independent suspension structure.
A business car comprises a car frame and an independent suspension for supporting the car frame, wherein the independent suspension is of the independent suspension structure, and the independent suspension structure is arranged in a transition piece mounting hole and supports a driving axle assembly for supporting a hub assembly and a brake assembly.
The suspension support arm comprises a support arm main body for supporting a suspension assembly, wherein the support arm main body comprises an upper support arm connected with an upper cross arm and a lower support arm connected with a lower cross arm; the upper support arm comprises a first branch support arm and a second branch support arm which extend upwards along the supporting direction of the support arm main body, a first upper cross arm mounting hole is formed in the top of the first branch support arm, and a first shock absorber mounting seat for supporting a first shock absorber is arranged at the supporting end of the first branch support arm; the top of the second branch arm is provided with a second upper cross arm mounting hole connected with the second upper cross arm, and the support end of the second branch arm is provided with a second shock absorber mounting seat for supporting a second shock absorber. The support arm main body is connected with the lower cross arm through the lower support arm, is connected with the upper cross arm through the upper cross arm and the lower cross arm, and forms a suspension support structure for the vehicle. Through setting up the support arm including first branch support arm and second branch support arm to set up first bumper shock absorber mount pad and second bumper shock absorber mount pad respectively at the top of first branch support arm and second branch support arm, make the support arm main part support two bumper shock absorbers simultaneously, thereby make the suspension structure of vehicle can constitute the two bumper shock absorber suspension bearing structure that constitute by two bumper shock absorbers, improved the bearing capacity of suspension, improved vehicle travelling comfort, can satisfy the suspension arrangement demand of big load and wide passageway vehicle.
The invention also provides an independent suspension structure, which comprises a suspension support arm of a suspension assembly, wherein the suspension support arm is the suspension support arm, and a first upper cross arm and a second upper cross arm which pull a support arm main body are respectively erected on the first upper cross arm installation hole and the second upper cross arm installation hole; the bottom of the lower support arm is provided with a lower cross arm mounting hole for mounting the lower cross arm. The independent suspension structure adopts the first upper cross arm and the second upper cross arm to respectively drag the first upper support arm and the second upper support arm, the lower support arm is dragged by the lower cross arm, the independent suspension structure can simultaneously carry out damping support of two dampers through the first upper support arm and the second upper support arm, the bearing capacity of the independent suspension is improved, the driving comfort of a vehicle is improved, and the arrangement requirements of a large load and a wide aisle vehicle are met.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a right side view of a suspension support arm provided by the present invention;
FIG. 2 is a front view of a suspension support arm provided by the present invention;
FIG. 3 is a right side view of the independent suspension structure provided by the present invention;
fig. 4 is a front view of an independent suspension structure provided by the present invention.
Detailed Description
The invention discloses a suspension support arm which meets the suspension arrangement requirements of a large-load and wide-aisle vehicle; the invention also provides a commercial vehicle and an independent suspension structure.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, fig. 1 is a right side view of a suspension support arm provided by the present invention; fig. 2 is a front view of a suspension arm provided by the present invention.
The embodiment provides a suspension support arm 1, which comprises a support arm main body 11 for supporting a suspension assembly, wherein the support arm main body 11 comprises an upper support arm 18 connected with an upper cross arm 2 and a lower support arm 13 connected with a lower cross arm 3; the upper support arm 18 comprises a first branch arm 181 and a second branch arm 182 which extend upwards along the supporting direction of the support arm main body, a first upper cross arm mounting hole 12 is formed in the top of the first branch arm 181, and a first shock absorber mounting seat 14 for supporting a first shock absorber is arranged at the supporting end of the first branch arm 181; the top of the second branch arm 182 is provided with a second upper cross arm mounting hole, and the support end of the second branch arm is provided with a second shock absorber mounting seat for supporting a second shock absorber. The support arm body 11 is connected with the lower cross arm 3 by the lower support arm 13, is connected with the upper cross arm 2 by the upper support arm 18, and supports the support arm body 11 by the upper cross arm 2 and the lower cross arm 3 to form a suspension support structure for a vehicle. Through setting up last support arm 18 and including first branch support arm 181 and second branch support arm 182 to set up first bumper shock absorber mount pad 14 and second bumper shock absorber mount pad respectively at the top of first branch support arm 181 and second branch support arm 182, make support arm main part 11 can support two bumper shock absorbers simultaneously, thereby make the suspension structure of vehicle can constitute the two bumper shock absorber suspension bearing structure that constitute by two bumper shock absorbers, improved the bearing capacity of suspension, improve vehicle travelling comfort, can satisfy the suspension arrangement demand of big load and wide passageway vehicle.
In this embodiment, the first branch arm 181 and the second branch arm 182 are disposed on the support arm body 11 back and forth in the vehicle traveling direction. The suspension support arm 1 is arranged at the bottom of the frame and used for rotatably supporting the hub assembly 5 and the brake assembly 4 and simultaneously bearing the support of an independent suspension to the frame, so that the structure layout of the bottom of the vehicle is influenced by the fact that the suspension support arm adopts a double-shock absorber support structure of a first branch support arm 181 and a second branch support arm 182 to occupy more space at the bottom of the frame, and the first branch support arm 181 and the second branch support arm 182 are arranged front and back along the travelling direction of the vehicle, so that after the shock absorber and the suspension support arm are assembled, the shock absorber is arranged front and back along the travelling direction of the vehicle, and the space in the middle of the bottom of the vehicle is prevented from being occupied. Meanwhile, as the middle part of the suspension support arm is provided with the transition piece mounting holes (15 and 16) for connecting the hub assembly 5 and the transition piece 7 of the brake assembly 4, the middle part of the suspension support arm is of a cylindrical support structure, and the first branch support arm 181 and the second branch support arm 182 are arranged on the circumference of the outer wall of the transition piece mounting hole, so that the structural strength of the upper support arm 18 and the lower support arm 13 on the support arm main body 11 is ensured.
In this embodiment, a branch arm reinforcing seat 17 is disposed between the first branch arm 181 and the second branch arm 182, and a damper mounting hole (15, 16) for supporting a damper is disposed on the branch arm reinforcing seat 17. Because the first branch arm 181 and the second branch arm 182 are arranged on the outer walls of the mounting holes (15, 16) of the transition piece in a front-back arrangement structure, the top parts of the first branch arm 181 and the second branch arm 182 are used for bearing the shock absorber, in order to ensure the structural strength of the first branch arm 181 and the second branch arm 182, the branch arm reinforcing seat 17 is arranged between the first branch arm 181 and the second branch arm 182, and a triangular supporting structure is formed by surrounding the first branch arm 181, the second branch arm 182 and the branch arm reinforcing seat 17, so that the structural strength of the supporting arm main body 11 is further improved. Further, a reinforcing rib plate 171 structure can be arranged between the branch arm reinforcing seat 17 and the first branch arm 181 and the second branch arm 182, so that the stability of the bearing structure of the branch arm reinforcing seat 17 to the support arm main body 11 is further ensured.
Since the first branch arm 181 and the second branch arm 182 extend forward and backward along the supporting direction of the support arm main body 11, the branch arm reinforcing seat 17 is connected with the first branch arm 181 and the second branch arm, and the shock absorber mounting hole is reserved on the branch arm reinforcing seat 17, that is, the suspension support arm 1 can be mounted with a third shock absorber through the structure of the branch arm reinforcing seat 17, so that the suspension support arm 1 is in a three-vibrator combined supporting structure, and the supporting capacity of the suspension support arm to a frame is further improved. Through setting up suspension support arm 1 into a plurality of bumper shock absorber bearing structure to the bearing structure of a plurality of bumper shock absorber combinations can be utilized, the bearing capacity of suspension support arm is improved, need not when improving the suspension and bear the weight of the requirement, design large-scale suspension support arm, further satisfy the bearing requirement of wide passageway commercial car.
In this particular embodiment, the first and second shock absorber mounts 14, 14 are both airbag mounts. The top of the supporting arm main body 11 is provided with an air bag installation seat, namely, the suspension supporting arm 1 is provided with a supporting seat structure of an air bag elastic element, so that the use requirement of the commercial vehicle suspension is met. Of course, the first damper mounting base 14 and the second damper mounting base may be provided as support structures for other elastic elements, such as damper spring support bases, so as to satisfy the load bearing structures of different vehicle models.
As shown in fig. 3 and 4, fig. 3 is a right side view of the independent suspension structure provided by the present invention; fig. 4 is a front view of an independent suspension structure provided by the present invention.
Based on the suspension support arm, the invention also provides an independent suspension structure, which comprises a suspension support arm 1 for supporting a suspension assembly, wherein the suspension support arm 1 is the suspension support arm according to any one of the above, and a first upper cross arm and a second upper cross arm which draw a support arm main body are respectively supported on a first upper cross arm mounting hole 12 and a second upper cross arm mounting hole; the bottom of the lower support arm 13 is provided with a lower cross arm mounting hole 131 for placing the lower cross arm 3.
The independent suspension structure adopts the first upper cross arm and the second upper cross arm to respectively drag the first upper support arm 181 and the second upper support arm 182, the lower support arm 13 is dragged by the lower cross arm 3, the independent suspension structure can simultaneously carry out the damping support of two dampers through the first upper support arm 181 and the second upper support arm 182, the bearing capacity of the independent suspension is improved, the driving comfort of a vehicle is improved, and the arrangement requirements of a large load and a wide aisle vehicle are met. The top of the first upper support arm 181 and the top of the second upper support arm 182 are respectively provided with an upper cross arm mounting hole so as to meet the traction requirement of the first upper cross arm and the second upper cross arm on the suspension support arm. The lower cross arm is connected with the lower support arm through a lower cross arm mounting hole, so that the torsion requirement of the independent suspension structure on the suspension support arm in the vehicle traction process is ensured.
In one embodiment, the first shock absorber mount 14 is braced with the first resilient member 6 of the braced frame and the second shock absorber mount is braced with the second resilient member of the braced frame.
Preferably, the first elastic element 6 and the second elastic element are both air spring dampers. The double-damping independent suspension structure meets the structural requirements of a commercial vehicle on the bearing and wide passage of the suspension. In order to meet the use comfort of the commercial vehicle, the first elastic element 6 on the first shock absorber mounting seat 14 and the second elastic element on the second shock absorber mounting seat are all arranged to be air spring shock absorbers, so that the comprehensive requirements of the height adjustment and the driving comfort of the suspension of the commercial vehicle are met.
In this embodiment, the lower arm 3 includes a lower arm front arm 31 and a lower arm rear arm 32 extending from the lower arm mounting hole toward the front end and the rear end of the vehicle running direction, respectively. Because the upper support arm pulls the suspension support arm 1 through the first upper support arm and the second upper support arm, when a single lower cross arm is adopted for pulling the lower support arm 13, the upper end of the suspension support arm is easy to cause excessive traction, the lower end of the suspension support arm 1 is not pulled enough, the lower cross arm 3 is provided with a V-shaped lower cross arm structure consisting of a lower cross arm front support arm 31 and a lower cross arm rear support arm 32, and the lower cross arm front support arm 31 and the lower cross arm rear support arm are respectively stretched forwards and backwards along the vehicle advancing direction so as to balance the stability of the vehicle structure in the traction process of the suspension support arm by the first upper cross arm and the second upper cross arm.
Based on the independent suspension structure provided in the above embodiment, the invention also provides a commercial vehicle, which comprises a frame and an independent suspension for supporting the frame, wherein the independent suspension structure provided in the above embodiment is provided. The knuckle assembly supporting the hub assembly and the brake assembly is supported in the transition piece mounting hole of the independent suspension structure.
Based on the independent suspension structure provided in the above embodiment, the invention also provides a commercial vehicle, which comprises a frame and an independent suspension for supporting the frame, wherein the independent suspension structure provided in the above embodiment is provided. The transition piece of the independent suspension structure is arranged in the mounting hole and supports the drive axle assembly of the hub assembly and the brake assembly.
The suspension support arm provided by the embodiment can realize that the independent suspension structure is suitable for the installation of the front suspension or the rear suspension of the vehicle through different mounting hole structures of the transition piece. When the transition piece 7 installed in the transition piece installation hole is a knuckle assembly, the independent suspension structure can be used for a steering suspension of a commercial vehicle. When the transition piece 7 is provided as a connecting structure of the half axle sleeve, the connecting structure can be connected with a drive axle assembly, and the connecting structure can be used as a front drive axle or a rear drive axle of a commercial vehicle. The steering suspension or the drive axle is arranged according to the design of the front or rear drive of the commercial vehicle, and will not be described here again.
The independent suspension structure of the embodiment is adopted by the commercial vehicle, so that the commercial vehicle has the beneficial effects brought by the independent suspension structure.
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 (8)

1. A suspension support arm comprising a support arm body for bracing a suspension assembly, the support arm body comprising an upper arm connected to an upper cross arm and a lower arm connected to a lower cross arm;
the upper support arm comprises a first branch support arm and a second branch support arm which extend upwards along the supporting direction of the support arm main body, a first upper cross arm mounting hole is formed in the top of the first branch support arm, and a first shock absorber mounting seat for supporting a first shock absorber is arranged at the supporting end of the first branch support arm;
the top of the second branch arm is provided with a second upper cross arm mounting hole connected with the second upper cross arm, and the support end of the second branch arm is provided with a second shock absorber mounting seat for supporting a second shock absorber;
the first branch arm and the second branch arm are arranged on the support arm main body back and forth along the vehicle travelling direction;
a branch arm reinforcing seat connected between the first branch arm and the second branch arm is arranged between the first branch arm and the second branch arm, a shock absorber mounting hole for supporting a shock absorber is arranged on the branch arm reinforcing seat, and a reinforcing rib plate structure is arranged between the branch arm reinforcing seat and the first branch arm and between the branch arm reinforcing seat and the second branch arm;
a transition piece mounting hole for connecting a hub assembly and a transition piece of the brake assembly is formed in the middle of the support arm main body;
the first branch support arm and the second branch support arm are arranged on the circumference of the outer wall of the mounting hole of the transition piece.
2. The suspension support arm of claim 1, wherein the first shock absorber mount and the second shock absorber mount are both air bag mounts.
3. An independent suspension structure comprising a suspension support arm for supporting a suspension assembly, wherein the suspension support arm is as claimed in any one of claims 1-2, and a first upper cross arm and a second upper cross arm for towing the support arm body are respectively supported in the first upper cross arm mounting hole and the second upper cross arm mounting hole; the bottom of the lower support arm is provided with a lower cross arm mounting hole for placing the lower cross arm.
4. The independent suspension structure of claim 3, wherein the first shock absorber mount is braced with a first resilient member that braces the vehicle frame and the second shock absorber mount is braced with a second resilient member that braces the vehicle frame.
5. The independent suspension structure of claim 4, wherein the first and second resilient elements are each air spring shock absorbers.
6. The independent suspension structure of claim 5, wherein the lower cross arm includes lower cross arm front arms and lower cross arm rear arms extending from the lower cross arm mounting holes toward front and rear ends, respectively, of the vehicle travel direction.
7. A business vehicle comprising a frame and an independent suspension supporting the frame, wherein the independent suspension is of an independent suspension structure as claimed in any one of claims 3-6, and a knuckle assembly supporting a hub assembly and a brake assembly is supported in a transition piece mounting hole of the independent suspension structure.
8. A business vehicle comprising a vehicle frame and an independent suspension for supporting the vehicle frame, wherein the independent suspension is of an independent suspension structure according to any one of claims 3-6, and a drive axle assembly for supporting a hub assembly and a brake assembly is arranged in a transition piece mounting hole of the independent suspension structure.
CN201811188501.1A 2018-10-12 2018-10-12 Commercial vehicle, independent suspension structure and suspension support arm Active CN109050187B (en)

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CN109050187B true CN109050187B (en) 2023-10-20

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CN110281722B (en) * 2019-05-09 2024-02-23 浙江盘毂动力科技有限公司 Independent suspension system and vehicle
CN110281721B (en) * 2019-05-09 2024-02-23 浙江盘毂动力科技有限公司 Independent suspension system and vehicle

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