CN210212530U - Tubular beam type rear auxiliary frame structure of electric passenger car - Google Patents

Tubular beam type rear auxiliary frame structure of electric passenger car Download PDF

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Publication number
CN210212530U
CN210212530U CN201920888198.XU CN201920888198U CN210212530U CN 210212530 U CN210212530 U CN 210212530U CN 201920888198 U CN201920888198 U CN 201920888198U CN 210212530 U CN210212530 U CN 210212530U
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China
Prior art keywords
cross beam
longitudinal beam
welded
mounting bracket
suspension
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CN201920888198.XU
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Chinese (zh)
Inventor
Jingrui Liang
梁景瑞
Wenjun Zhang
张文军
Xiaoqing Wu
吴小青
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Dayun Automobile Co Ltd
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Dayun Automobile Co Ltd
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Abstract

The utility model relates to an automotive suspension structure field specifically is a sub vehicle frame structure behind tubular beam formula of electronic passenger car. The frame-shaped structure comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam which are of a pipe body structure, wherein two ends of the left longitudinal beam are respectively welded below the left sides of the front cross beam and the rear cross beam; a front suspension mounting bracket is oppositely welded on a front cross beam which is positioned between the left longitudinal beam and the right longitudinal beam and is close to the left longitudinal beam along the left-right direction; and rear tie rod mounting plates are respectively welded at the joints of the rear cross beam and the left longitudinal beam and the right longitudinal beam. A rear auxiliary frame scheme is provided for the rear suspension of the McPherson electric passenger vehicle, installation positions can be provided for a rear motor, a rear speed reducer and a rear motor controller, a rear driving shaft can be arranged in space, and rear wheel driving is achieved.

Description

Tubular beam type rear auxiliary frame structure of electric passenger car
Technical Field
The utility model relates to an automotive suspension structure field specifically is a sub vehicle frame structure behind tubular beam formula of electronic passenger car.
Background
The rear suspension of the electric passenger car on the market at present mainly has the structural forms of a trailing arm type integral suspension, a torsion beam type semi-independent suspension, a double-cross arm type independent suspension, a multi-link type independent suspension and a Macpherson type independent suspension. In order to realize the function that the rear wheel of the electric passenger vehicle can be driven, the basic characteristics of the rear suspension structures are as follows:
1. trailing arm independent suspension: the rear wheel driving device has the advantages of no auxiliary frame, simple structure and low cost, but can not arrange parts such as a motor, a speed reducer, a driving shaft and the like, so that the rear wheel driving function can not be realized.
2. Torsion beam type semi-independent suspension: the auxiliary frame is not needed, the structure is simple, the cost is low, and the arrangement of parts such as a motor, a speed reducer and a driving shaft is difficult. Mature products are not available in the existing market, and the market development risk is large.
3. Double wishbone independent suspension and multi-link independent suspension: the whole structure is complex, the cost is high, and the arrangement of parts such as a motor, a speed reducer, a driving shaft and the like can be realized. But the structure of the battery pack occupies a large space, so that the arrangement space of the battery pack is influenced.
4. Macpherson independent suspension: simple structure, low cost and small arrangement space. The arrangement of parts such as the motor, the speed reducer, the driving shaft and the like can be realized, and the influence on the arrangement space of the battery pack is small.
In order to arrange a rear driving motor, a rear reducer and a rear motor controller more reasonably, a tubular beam type rear auxiliary frame capable of realizing rear wheel driving needs to be designed on the basis of a Macpherson type independent suspension.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a more reasonable back driving motor, back reduction gear, back machine controller of arranging provides a sub vehicle frame structure behind tubular beam formula of electronic passenger car.
The utility model discloses a realize through following technical scheme: a tube beam type rear auxiliary frame structure of an electric passenger vehicle comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam which are of tube body structures,
the two ends of the left longitudinal beam are welded below the left sides of the front cross beam and the rear cross beam respectively, the two ends of the right longitudinal beam are welded below the right sides of the front cross beam and the rear cross beam respectively, and the front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam jointly form a frame-shaped structure;
a front suspension mounting bracket is oppositely welded on a front cross beam which is positioned between the left longitudinal beam and the right longitudinal beam and is close to the left longitudinal beam along the left-right direction;
a rear suspension mounting bracket is welded on the rear cross beam opposite to the front suspension mounting bracket, two ends of the rear cross beam are bent upwards, and rear tie rod mounting plates are respectively welded at the joints of the rear cross beam and the left longitudinal beam and the right longitudinal beam;
a left swing arm front mounting bracket and a left swing arm rear mounting bracket are respectively welded at the front end part and the rear end part of the outer side of the left longitudinal beam, and a rear MCU mounting bracket is welded on the upper surface of the left longitudinal beam and the front cross beam together;
the front end part and the rear end part of the outer side of the right longitudinal beam are respectively welded with a front right swing arm mounting bracket and a rear right swing arm mounting bracket, and two right suspension mounting holes are formed in the right longitudinal beam between the front right swing arm mounting bracket and the rear right swing arm mounting bracket along the left-right direction.
As the utility model discloses technical scheme's further improvement, the both ends of front beam, rear frame member are followed upper and lower direction and are run through the welding respectively and have the automobile body installation sleeve pipe, and the automobile body construction bolt has been worn to put from the top down in every automobile body installation sleeve pipe, and automobile body construction bolt wears to locate in the automobile body installation hole and through screwed pipe and automobile body fixed connection.
As the utility model discloses technical scheme's further improvement, the automobile body installation sleeve pipe top that is located the back beam both ends has welded the back beam backing plate respectively, and the automobile body construction bolt can pass the back beam backing plate and with automobile body fixed connection.
As the utility model discloses technical scheme's further improvement, it has the locating pin to weld respectively along upper and lower direction on every back beam backing plate, and the locating pin can wear to put the cooperation with the locating hole location of automobile body.
As the utility model discloses technical scheme's further improvement, it has back drag link mounting sleeve to run through the welding respectively along upper and lower direction on every back drag link mounting panel.
As the utility model discloses technical scheme's further improvement, all the through welding has right suspension mounting sleeve in every right suspension mounting hole.
Sub vehicle frame structure behind pipe beam formula of electronic passenger car has following several beneficial effect:
a. a rear auxiliary frame scheme is provided for the rear suspension of the McPherson electric passenger vehicle, installation positions can be provided for a rear motor, a rear speed reducer and a rear motor controller, a rear driving shaft can be arranged in space, and rear wheel driving is achieved.
b. The first-order constraint mode of the motor reaches 268Hz, and resonance of the motor and the auxiliary frame can be effectively avoided, so that the comfort of passengers is influenced.
c. All longitudinal beams of the auxiliary frame of the general Macpherson suspension are stamping parts or hydroformed parts, and the auxiliary frame needs to develop a die, so that the cost is high, and the period is long. The rear cross beam of the tubular beam type rear auxiliary frame is simple in structure, can be used after being bent only by a tubular product, and is low in cost and short in period.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model discloses the structural schematic diagram of sub vehicle frame structure behind the pipe beam formula of electronic passenger car.
Fig. 2 is a usage state diagram of the tubular beam type rear subframe structure of the electric passenger vehicle.
In the figure: 1-vehicle body mount bushing, 2-front suspension mount bracket, 3-front cross beam, 4-right swing arm front mount bracket, 5-right longitudinal beam, 6-right swing arm rear mount bracket, 7-positioning pin, 8-rear cross beam pad, 9-rear cross beam, 10-rear suspension mount bracket, 11-left swing arm rear mount bracket, 12-rear MCU mount bracket, 13-right suspension mount bushing, 14-rear cross-brace mount bushing, 15-left longitudinal beam, 16-left swing arm front mount bracket, 17-vehicle body mount bolt, 18-rear MCU, 19-front suspension, 20-rear motor, 21-right suspension, 22-rear cross-brace, 23-rear stabilizer bar, 24-rear retarder, 25-rear suspension, 26-right swing arm, 27-left swing arm, 28-rear tie rod mounting plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
A tube beam type rear auxiliary frame structure of an electric passenger vehicle comprises a front cross beam 3, a rear cross beam 9, a left longitudinal beam 15 and a right longitudinal beam 5 which are of tube body structures,
two ends of the left longitudinal beam 15 are respectively welded below the left sides of the front cross beam 3 and the rear cross beam 9, two ends of the right longitudinal beam 5 are respectively welded below the right sides of the front cross beam 3 and the rear cross beam 9, and the front cross beam 3, the rear cross beam 9, the left longitudinal beam 15 and the right longitudinal beam 5 jointly form a frame-shaped structure;
the front cross beam 3 which is positioned between the left longitudinal beam 15 and the right longitudinal beam 5 and is close to the left longitudinal beam 15 is oppositely welded with the front suspension mounting bracket 2 along the left-right direction;
a rear suspension mounting bracket 10 is welded on a rear cross beam 9 opposite to the front suspension mounting bracket 2, two ends of the rear cross beam 9 are bent upwards, and rear tie rod mounting plates 28 are respectively welded at the joints of the rear cross beam 9 and the left longitudinal beam 15 and the right longitudinal beam 5;
a left swing arm front mounting bracket 16 and a left swing arm rear mounting bracket 11 are respectively welded at the front end part and the rear end part of the outer side of the left longitudinal beam 15, and a rear MCU mounting bracket 12 is welded on the upper surface of the left longitudinal beam 15 and the front cross beam 3 together;
the front end and the rear end of the outer side of the right longitudinal beam 5 are respectively welded with a right swing arm front mounting bracket 4 and a right swing arm rear mounting bracket 6, and two right suspension mounting holes are formed in the right longitudinal beam 5 between the right swing arm front mounting bracket 4 and the right swing arm rear mounting bracket 6 along the left-right direction.
During mounting, one end of the front suspension 19 is mounted on the front suspension mounting bracket 2, and the other end is connected with the rear motor 20, so that vibration transmitted to the rear subframe structure by the rear motor 20 can be reduced; one end of the rear suspension 25 is mounted on the rear suspension mounting bracket 10, and the other end is connected with the rear speed reducer 24, so that the vibration transmitted to the rear sub-frame structure by the rear speed reducer 24 and the rear motor 20 can be reduced; one end of the rear track rod 22 is mounted on the rear track rod mounting plate 28; the front end and the rear end of the left swing arm 27 are respectively rotatably mounted on the left swing arm front mounting bracket 16 and the left swing arm rear mounting bracket 11, and the bottom of the rear MCU18 is mounted on the rear MCU mounting bracket 12; the front end and the rear end of the right swing arm 26 are respectively rotatably mounted on the front mounting bracket 4 of the right swing arm and the rear mounting bracket 6 of the right swing arm, one end of the right suspension 25 is fixedly connected with the right suspension mounting hole through a bolt, and the other end of the right suspension is connected with the rear motor 20, so that the vibration transmitted from the rear motor 20 to the rear auxiliary frame structure is reduced. In the present invention, the rear motor 20, the rear speed reducer 24, the rear MCU18, the front suspension 19, the rear suspension 25, the right suspension 21, the left swing arm 27, the right swing arm 26, the rear tie rod 22, and the rear stabilizer bar 23 are well known in the art, and the corresponding mounting method is also well known in the art. Therefore, the connection mode between the mounting bracket of each component and the corresponding component of the present invention is also easy to be realized in the field.
The utility model discloses a back sub vehicle frame structure provides corresponding installation position for back motor 20, rear reduction gear 24 and back MCU18 to foretell overall arrangement vacates the space for installing in the rear drive axle at rear reduction gear 24 both ends, thereby realizes the rear wheel drive.
The utility model further provides a concrete implementation mode of preceding suspension installing support 2: the front suspension mounting lug is welded on the front cross beam 3 oppositely, and the two front suspension mounting lugs are respectively provided with a shaft hole oppositely and are used for being rotatably connected with a front suspension 19. Preferably, the two front suspension mounting lugs are respectively bent outwards to form flanges welded with the front cross beam 3, so that the rigidity of the front suspension mounting lugs is increased, and resonance is reduced; or the outer sides of the front suspension mounting lugs are respectively welded with reinforcing ribs which are welded with the front cross beam 3. The flanging and the reinforcing rib can exist simultaneously, or only one reinforcing member can be adopted.
The utility model further provides a concrete implementation mode of back suspension installing support 10: specifically, a rear suspension mounting plate made of a C-shaped plate stamping part can be adopted, the opening of the rear suspension mounting plate faces the front cross beam 3, one side of the rear suspension mounting plate is welded and matched on the arc-shaped tube surface of the rear cross beam 9, and two ends of the rear suspension mounting plate are coaxially provided with shaft holes connected with the rear suspension 25.
The utility model further provides a concrete implementation mode of back drag link mounting panel 28: that is, the rear tie rod mounting sleeve 14 is respectively welded to each rear tie rod mounting plate 28 in a vertically penetrating manner. The rear tie rods 22 are mounted in the rear tie rod mounting sleeves 14 by ball pins, respectively.
Further, installing support 4 is symmetrical structure before installing support 16 and the right swing arm before the left swing arm, the utility model further provides a concrete implementation mode of installing support 4 before installing support 16 and the right swing arm before the left swing arm: the front connecting plate can be made of a plate through stamping, connecting holes are formed in the middle of the front connecting plate respectively and are used for being rotatably connected with front point bushings of the left swing arm 27 and the right swing arm 26, and the rigidity and the strength can be increased through flanging. The convex plane of front connecting plate towards the front point bush can increase the contact surface of front point bush installation, reduces the risk of moment decay.
Installing support 6 is processed for the symmetry behind installing support 11 and the right swing arm behind the left swing arm, the utility model further provides a concrete implementation mode of installing support 6 behind installing support 11 and the right swing arm behind the left swing arm: the rear connecting plate can be made of C-shaped plate stamping parts, connecting holes are respectively formed in the middle parts of two ends of the rear connecting plate and are used for being rotatably connected with rear point bushings of the left swing arm 27 and the right swing arm 26, and the rigidity and the strength can be increased through flanging. The convex plane of back connecting plate towards back point bush can increase the contact surface of front point bush installation, reduces the risk of moment decay.
The utility model further provides a concrete implementation mode of back MCU installing support 12: the front cross beam comprises four support plates (shown in fig. 1) made of sheet stamping parts, wherein two of the support plates are welded on the inner side of the left longitudinal beam 15 along the vertical direction, one support plate is welded on the outer side of the left longitudinal beam 15 after being bent, and the last support plate is welded on the rear side of the front cross beam 3. Mounting holes are formed in the four supporting plates, nuts are correspondingly welded on the mounting holes in a protruding mode, and four corners of the rear MCU18 are fixedly supported on the supporting plates through bolts respectively. The problem of because of the space is not enough, the automobile body can't install MCU is solved.
During specific implementation, a right suspension mounting sleeve 13 penetrates through and is welded in each right suspension mounting hole. The right suspension mounting sleeve 13 can be machined by a cold drawn pipe machine. The right suspension mounting sleeve 13 provides a mounting surface for the right suspension 21, ensuring that it has sufficient contact area with the mounting bolt.
The utility model particularly provides a connected mode of back sub vehicle frame structure and automobile body: the automobile body mounting structure is characterized in that automobile body mounting sleeves 1 are respectively welded at two ends of the front cross beam 3 and the rear cross beam 9 in a penetrating mode in the vertical direction, an automobile body mounting bolt 17 penetrates through each automobile body mounting sleeve 1 from bottom to top, and the automobile body mounting bolts 17 penetrate through automobile body mounting holes and are fixedly connected with an automobile body through threaded pipes. The vehicle body mounting sleeve 1 can provide support for the vehicle body mounting bolt 17, increase the contact area of the rear auxiliary frame structure and the vehicle body, and reduce the rubbing risk.
Specifically, rear cross beam base plates 8 are welded above the vehicle body installation sleeves 1 at two ends of the rear cross beam 9 respectively, and vehicle body installation bolts 17 can penetrate through the rear cross beam base plates 8 and are fixedly connected with a vehicle body. The contact area between the rear cross beam base plate 8 and the vehicle body is increased, and the rubbing risk is further reduced. Specifically, the rear cross beam base plate 8 can be made of a plate stamping part.
Preferably, each rear cross beam base plate 8 is welded with a positioning pin 7 along the vertical direction, and the positioning pins 7 can be positioned, penetrated and matched with positioning holes of a vehicle body. Before the rear auxiliary frame structure is connected with the vehicle body, the positioning pin 7 and the vehicle body positioning hole can be penetrated, positioned and matched and then connected, so that the positioning precision between the rear auxiliary frame structure and the vehicle body can be improved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. A tube beam type rear auxiliary frame structure of an electric passenger vehicle is characterized by comprising a front cross beam (3), a rear cross beam (9), a left longitudinal beam (15) and a right longitudinal beam (5) which are of tube body structures,
the two ends of the left longitudinal beam (15) are respectively welded below the left sides of the front cross beam (3) and the rear cross beam (9), the two ends of the right longitudinal beam (5) are respectively welded below the right sides of the front cross beam (3) and the rear cross beam (9), and the front cross beam (3), the rear cross beam (9), the left longitudinal beam (15) and the right longitudinal beam (5) jointly form a frame-shaped structure;
a front suspension mounting bracket (2) is welded on a front cross beam (3) which is positioned between the left longitudinal beam (15) and the right longitudinal beam (5) and is close to the left longitudinal beam (15) along the left-right direction;
a rear suspension mounting bracket (10) is welded on a rear cross beam (9) opposite to the front suspension mounting bracket (2), two ends of the rear cross beam (9) are bent upwards, and rear cross-pull rod mounting plates (28) are respectively welded at the joints of the rear cross beam (9) and the left longitudinal beam (15) and the right longitudinal beam (5);
a left swing arm front mounting bracket (16) and a left swing arm rear mounting bracket (11) are respectively welded at the front end part and the rear end part of the outer side of the left longitudinal beam (15), and a rear MCU mounting bracket (12) is jointly welded on the upper surface of the left longitudinal beam (15) and the front cross beam (3);
the front end and the rear end of the outer side of the right longitudinal beam (5) are respectively welded with a right swing arm front mounting bracket (4) and a right swing arm rear mounting bracket (6), and two right suspension mounting holes are formed in the right longitudinal beam (5) between the right swing arm front mounting bracket (4) and the right swing arm rear mounting bracket (6) along the left-right direction.
2. The tubular beam type rear subframe structure of an electric passenger vehicle as claimed in claim 1, wherein two ends of the front cross beam (3) and the rear cross beam (9) are respectively through welded with a vehicle body installation sleeve (1) along the vertical direction, a vehicle body installation bolt (17) penetrates through each vehicle body installation sleeve (1) from bottom to top, and the vehicle body installation bolt (17) penetrates through a vehicle body installation hole and is fixedly connected with a vehicle body through a threaded pipe.
3. The tubular beam type rear subframe structure of an electric passenger vehicle as claimed in claim 2, wherein rear cross beam base plates (8) are welded above the vehicle body mounting sleeves (1) at both ends of the rear cross beam (9), and vehicle body mounting bolts (17) can penetrate through the rear cross beam base plates (8) and are fixedly connected with the vehicle body.
4. The tubular beam type rear subframe structure of an electric passenger vehicle as claimed in claim 3, wherein each rear cross beam base plate (8) is welded with a positioning pin (7) along the vertical direction, and the positioning pins (7) can be positioned, penetrated and matched with positioning holes of a vehicle body.
5. The tubular beam type rear sub frame structure of an electric passenger vehicle according to claim 1, 2, 3 or 4, wherein a rear tie rod mounting sleeve (14) is respectively through-welded to each rear tie rod mounting plate (28) in an up-down direction.
6. The tubular beam type rear sub frame structure of an electric passenger vehicle as claimed in claim 1, 2, 3 or 4, wherein a right suspension mounting sleeve (13) is welded in each right suspension mounting hole.
7. The tubular beam type rear sub-frame structure of an electric passenger vehicle as claimed in claim 5, wherein a right suspension mounting sleeve (13) is welded in each right suspension mounting hole.
CN201920888198.XU 2019-06-13 2019-06-13 Tubular beam type rear auxiliary frame structure of electric passenger car Active CN210212530U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920888198.XU CN210212530U (en) 2019-06-13 2019-06-13 Tubular beam type rear auxiliary frame structure of electric passenger car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920888198.XU CN210212530U (en) 2019-06-13 2019-06-13 Tubular beam type rear auxiliary frame structure of electric passenger car

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CN210212530U true CN210212530U (en) 2020-03-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111891219A (en) * 2020-07-27 2020-11-06 东风汽车股份有限公司 Outer connected system of many suspensions on electric automobile
CN113353176A (en) * 2021-07-19 2021-09-07 上汽通用五菱汽车股份有限公司 Double-cross-arm independent suspension device of rear-drive electric vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111891219A (en) * 2020-07-27 2020-11-06 东风汽车股份有限公司 Outer connected system of many suspensions on electric automobile
CN111891219B (en) * 2020-07-27 2021-08-06 东风汽车股份有限公司 Outer connected system of many suspensions on electric automobile
CN113353176A (en) * 2021-07-19 2021-09-07 上汽通用五菱汽车股份有限公司 Double-cross-arm independent suspension device of rear-drive electric vehicle

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