Bearing bridge structure and vehicle

Abstract

The utility model discloses a bearing bridge structure and a vehicle, the bearing bridge structure comprises an axle cross beam, the axle cross beam extends along the transverse direction of the vehicle, and at least part of the axle cross beam is bent along the longitudinal direction of the vehicle; the two rear steering knuckles are connected to the two ends of the axle cross beam respectively, mounting parts used for mounting a rear transmission shaft are formed on the rear steering knuckles, and in the vertical direction of the vehicle, the mounting parts are higher than the axle cross beam. According to the bearing bridge structure, enough arrangement space can be provided for the all-in-one driving motor, installation of the all-in-one driving motor is facilitated, meanwhile, the height of the floor surface of a vehicle body is reduced, sufficient jumping space is provided for a suspension, and the running stability of the vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a load-bearing bridge structure and a vehicle with the load-bearing bridge structure. Background Art

[0002] In the related technologies, the traditional central integral drive axle is generally coaxial, with a driving half shaft and a middle differential, and only supports the central drive type, and needs to be used with an independent external drive shaft, gearbox, transfer case, etc. The traditional structure generally has an unadjustable speed ratio, which is not conducive to the selection and layout, has low transmission efficiency, is relatively bulky, and has relatively high energy consumption. With the increasing popularity of new energy and the general trend of maximizing energy conservation and emission reduction, this type of drive axle is not the first choice.

[0003] However, when an external load-bearing bridge of the transmission shaft is used to match an all-in-one electric motor, it is impossible to ensure sufficient layout space for the drive motor and other structural components. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a load-bearing bridge structure, which can provide sufficient layout space for the all-in-one drive motor, facilitate the installation of the all-in-one drive motor, and at the same time, reduce the height of the vehicle body floor surface, provide sufficient jumping space for the suspension, and improve the driving stability of the vehicle.

[0005] The load-bearing bridge structure according to the embodiment of the utility model includes: an axle crossbeam, which extends in the transverse direction of the vehicle and at least part of which is bent in the longitudinal direction of the vehicle; two rear steering knuckles, which are respectively connected to the two ends of the axle crossbeam, and the rear steering knuckles are formed with a mounting portion for mounting a rear drive shaft, and in the vertical direction of the vehicle, the height of the mounting portion is higher than the height of the axle crossbeam.

[0006] According to the load-bearing bridge structure of the embodiment of the utility model, by bending at least part of the axle beam along the longitudinal direction of the vehicle, the height of the mounting portion formed on the rear steering knuckle is set to be higher than the height of the axle beam, so that the wheel center is offset, which can provide sufficient layout space for the all-in-one drive motor, facilitate the installation of the all-in-one drive motor, and at the same time, reduce the height of the vehicle body floor surface, provide sufficient jumping space for the suspension, and improve the driving stability of the vehicle.

[0007] According to the load-bearing bridge structure of some embodiments of the utility model, the mounting portion is constructed as a mounting hole that passes through the rear steering knuckle in the transverse direction of the vehicle, and the mounting hole is used to pass the rear drive shaft; wherein the rear steering knuckle is also provided with a plurality of first connecting holes distributed around the mounting hole, and the plurality of first connecting holes are used to be detachably connected to the wheel hub bearing via a first connecting member.

[0008] According to the carrier bridge structure of some embodiments of the present utility model, the rear steering knuckle further forms an installation opening, the installation opening communicates with the top of the installation hole, and the rear drive shaft assembly is adapted to enter the installation hole from the installation opening.

[0009] According to the carrier bridge structure of some embodiments of the present utility model, the carrier bridge structure further includes a reinforcing plate, the reinforcing plate is detachably connected to the rear steering knuckle, and is adapted to be connected to both sides of the installation opening.

[0010] According to the carrier bridge structure of some embodiments of the present utility model, the rear steering knuckle further forms a fixed through hole, the fixed through hole is located below the installation portion, and the end of the axle cross beam penetrates through the fixed through hole.

[0011] According to the carrier bridge structure of some embodiments of the present utility model, the axle cross beam includes a first cross beam plate and a second cross beam plate, the first cross beam plate and the second cross beam plate are spliced and connected, and both the first cross beam plate and the second cross beam plate are configured to be bent along the longitudinal direction of the vehicle.

[0012] According to the carrier bridge structure of some embodiments of the present utility model, the length of the first cross beam plate in the transverse direction of the vehicle is the same as the length of the second cross beam in the transverse direction of the vehicle, and the first cross beam plate and the second cross beam plate are spliced along the vertical direction of the vehicle.

[0013] According to the carrier bridge structure of some embodiments of the present utility model, the carrier bridge structure further includes: two limit block brackets, the two limit block brackets are respectively arranged above both ends of the axle cross beam and are located between the two rear steering knuckles; and / or, two axle leaf spring mounting bases, the two axle leaf spring mounting bases are respectively arranged above both ends of the axle cross beam and are located between the two rear steering knuckles; and / or, two shock absorber lower brackets, the two shock absorber lower brackets are respectively arranged on the front sides of both ends of the axle cross beam and are located between the two rear steering knuckles.

[0014] According to the carrier bridge structure of some embodiments of the present utility model, the middle part of the axle cross beam is configured to be bent backward along the longitudinal direction of the vehicle; and / or, in the vertical direction of the vehicle, the height of the middle part of the axle cross beam is higher than the height of the end part of the axle cross beam.

[0015] The present utility model also proposes a vehicle.

[0016] According to the vehicle of the embodiments of the present utility model, it includes the carrier bridge structure described in any one of the above embodiments.

[0017] The advantages of the vehicle and the above carrier bridge structure relative to the prior art are the same, and will not be elaborated here.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is an axonometric view of a carrier bridge structure according to an embodiment of the present utility model;

[0021] Figure 2 is a top view of a carrier bridge structure according to an embodiment of the present utility model;

[0022] Figure 3 is a rear view of a carrier bridge structure according to an embodiment of the present utility model;

[0023] Figure 4 is a side view of a carrier bridge structure according to an embodiment of the present utility model;

[0024] Figure 5 is Figure 3 a sectional view of;

[0025] Figure 6 is a schematic structural view of a carrier bridge structure assembled with a rear drive shaft and a brake according to an embodiment of the present utility model Figure 1 ;

[0026] Figure 7 is a schematic structural view of a carrier bridge structure assembled with a rear drive shaft and a brake according to an embodiment of the present utility model Figure 2 ;

[0027] Figure 8 is a schematic structural view of a carrier bridge structure during assembly with a rear drive shaft according to an embodiment of the present utility model Figure 1 ;

[0028] Figure 9 is a schematic structural view of a carrier bridge structure during assembly with a rear drive shaft according to an embodiment of the present utility model Figure 2 ;

[0029] Figure 10 is a schematic structural view of a carrier bridge structure after assembly with a rear drive shaft according to an embodiment of the present utility model.

[0030] Reference numerals:

[0031] Carrier bridge structure 100,

[0032] Axle beam 1, first beam plate 11, second beam plate 12,

[0033] Rear steering knuckle 2, mounting hole 21, first connection hole 22, mounting opening 23, fixed through hole 24

[0034] Rear drive shaft 3, hub bearing 4, brake 5, brake caliper 51

[0035] First connecting piece 61, reinforcing plate 62, limit block bracket 63, axle leaf spring mounting base 64, shock absorber lower bracket 65, second connection hole 66, third connection hole 67, second connecting piece 68, fourth connection hole 69, fifth connection hole 70 Specific embodiments

[0036] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0037] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mounting", "connecting" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Unless otherwise specified, the front-rear direction in this application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the transverse direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

[0040] The following will refer to Figures 1 - 10 the carrier bridge structure 100 according to an embodiment of the present utility model. The carrier bridge structure 100 can provide sufficient layout space for the multi-in-one drive motor, which is conducive to the installation of the multi-in-one drive motor. At the same time, the height of the vehicle body floor is reduced, sufficient bounce space is provided for the suspension, and the driving stability of the vehicle is improved.

[0041] As Figures 1 - 10 shown, the carrier bridge structure 100 according to an embodiment of the present utility model includes an axle cross member 1 and two rear steering knuckles 2.

[0042] The axle cross member 1 is the main load-bearing structure, which is responsible for supporting the weight of the vehicle and evenly distributing the weight to the wheels, and requires a certain load-bearing capacity. The axle cross member 1 extends along the transverse direction of the vehicle, and at least part of the axle cross member 1 is bent along the longitudinal direction of the vehicle. That is to say, the axle cross member 1 extends left and right along the width direction of the vehicle to connect to both sides of the vehicle and bear the weight of the vehicle. A part of the axle cross member 1 can be bent to a certain extent along the longitudinal direction of the vehicle, that is, the front and rear directions. For example, it can be bent forward or backward, or bent obliquely. Referring to Figure 1 shown, the axle cross member 1 is bent backward.

[0043] In this way, a sunken space area can be formed in the bent section of the axle cross member 1, so as to provide sufficient layout space for the multi-in-one drive motor, which is conducive to the installation of the multi-in-one drive motor. Moreover, the sunken space area formed by the bent axle cross member 1 can also reduce the space occupied by the axle cross member 1 in the vertical direction to a certain extent, thereby reducing the vertical height of the vehicle. This not only facilitates the layout of the multi-in-one drive motor and reduces the installation height of the drive motor, but also reduces the height of the vehicle body floor, provides sufficient bounce space for the suspension, and improves the driving stability of the vehicle.

[0044] Furthermore, the two rear steering knuckles 2 are respectively connected to both ends of the axle cross member 1, and the rear steering knuckles 2 are formed with mounting portions for mounting the rear drive shaft 3. In the vertical direction of the vehicle, the height of the mounting portion is higher than the height of the axle cross member 1.

[0045] Specifically, the rear knuckle 2 is used to connect the wheel and the axle beam 1, and the two rear knuckles 2 are respectively connected to the two ends of the axle beam 1, so that the two rear knuckles 2 on the left and right sides of the vehicle can be respectively connected to the left and right ends of the axle beam 1, so that the left and right wheels can be stably connected to the vehicle. A mounting portion for mounting the rear drive shaft 3 is formed on the rear knuckle 2, that is, the mounting portion is used to mount and fix the rear drive shaft 3, so that the rear drive shaft 3 can be stably connected to the wheel, and the rear drive shaft 3 is coaxially connected to the drive motor, so that power can be transmitted to the wheel, realizing effective power transmission and ensuring smooth driving of the vehicle. In actual design, the two rear knuckles 2 can be welded to the axle beam 1 to ensure connection stability and reliability.

[0046] Among them, in the vertical direction of the vehicle, that is, the height of the mounting portion is higher than the height of the axle beam 1, that is, the axle beam 1 is located below the mounting portion, so that after the mounting portion is installed with the rear drive shaft 3 and the rear drive shaft 3 is connected to the wheel, the axle beam 1 is located below the wheel center of the wheel, and because the axle beam 1 is partially bent along the longitudinal direction of the vehicle, the wheel center is offset relative to the axle beam 1, that is, spaced from the axis of the axle beam 1. In this way, sufficient layout space can be further provided for the multi-in-one drive motor, which is conducive to the installation of the multi-in-one drive motor and improves the power transmission efficiency.

[0047] According to the load-bearing bridge structure 100 of the embodiment of the utility model, by bending at least part of the axle beam 1 along the longitudinal direction of the vehicle, the height of the mounting portion formed on the rear steering knuckle 2 is set to be higher than the height of the axle beam 1, so that the wheel center is offset, which can provide sufficient layout space for the all-in-one drive motor, facilitate the installation of the all-in-one drive motor, and at the same time, reduce the height of the vehicle body floor surface, provide sufficient jumping space for the suspension, and improve the driving stability of the vehicle.

[0048] In some embodiments, the mounting portion is configured as a mounting hole 21 that passes through the rear steering knuckle 2 in the transverse direction of the vehicle, and the mounting hole 21 is used to pass the rear transmission shaft 3 .

[0049] Specifically, Figure 1 As shown, the mounting portion is constructed as a mounting hole 21 that penetrates the rear steering knuckle 2 in the lateral direction of the vehicle, i.e., the left-right direction. The mounting hole 21 is constructed as a circular hole that matches the shape and size of the rear transmission shaft 3, so that the rear transmission shaft 3 can be installed on the rear steering knuckle 2 through the mounting hole 21. In practice, the spline gear at the end of the rear transmission shaft 3 can be installed on the rear steering knuckle 2 through the mounting hole 21.

[0050] The rear steering knuckle 2 is further provided with a plurality of first connecting holes 22 distributed around the mounting hole 21 , and the plurality of first connecting holes 22 are used to be detachably connected to the wheel hub bearing 4 through the first connecting member 61 .

[0051] Specifically, as Figure 1 shown, a plurality of first connection holes 22 are also provided on the rear steering knuckle 2 and are spaced apart around the central mounting hole 21. The number of the first connection holes 22 can be set to two, three or even more. Four first connection holes 22 are shown in the figure. The first connection holes 22 are provided through the thickness direction of the rear steering knuckle 2. Bolts, screws and other first connecting members 61 can be passed through the plurality of first connection holes 22, and are detachably connected to the hub bearing 4 through the first connecting members 61. The first connecting members 61 shown in the figure are bolts. In this way, it is convenient to install the hub bearing 4 of the rear brake assembly on the rear steering knuckle 2, and the disassembly is convenient. After the rear steering knuckle 2 and the hub bearing 4 are locked by the first connecting members 61, the requirements of load-carrying capacity, strength, stiffness and durability are met.

[0052] In some embodiments, the rear steering knuckle 2 further forms a mounting opening 23, and the mounting opening 23 communicates with the top of the mounting hole 21. The rear drive shaft 3 assembly is adapted to enter the mounting hole 21 from the mounting opening 23.

[0053] Specifically, the rear steering knuckle 2 can be set as an open type. As Figure 9 shown, the upper part of the rear steering knuckle 2 forms a mounting opening 23, and the mounting opening 23 communicates with the top of the mounting hole 21. The rear drive shaft 3 can enter the mounting hole 21 from the mounting opening 23, so that the rear drive shaft 3 can quickly enter the mounting hole 21 from top to bottom to be installed in the rear steering knuckle 2, which is convenient and fast, and improves the assembly efficiency.

[0054] Of course, the mounting opening 23 can also be formed on the side of the rear steering knuckle 2 and communicate with the side of the mounting hole 21, so that the rear drive shaft 3 can quickly enter the mounting hole 21 from the side to be installed in the rear steering knuckle 2. After the rear drive shaft 3 is installed in the rear steering knuckle 2, a drive motor can be connected to the inner side of the rear drive shaft 3. The rear steering knuckle 2 can also be set as a closed type, which is not limited to the embodiments described herein.

[0055] In actual design, the rear steering knuckle 2 can be forged from high-strength steel or can be in the form of a casting to improve its strength and stiffness.

[0056] In some embodiments, the carrier bridge structure 100 further includes a reinforcing plate 62, and the reinforcing plate 62 is detachably connected to the rear steering knuckle 2 and is adapted to be connected to both sides of the mounting opening 23.

[0057] Specifically, as Figure 5 and Figure 9 shown, the carrier bridge structure 100 further includes a reinforcing plate 62. The reinforcing plate 62 can increase the overall strength and stiffness of the rear steering knuckle 2. The reinforcing plate 62 is configured in an arc shape and is adapted to the shapes of the rear steering knuckle 2 and the mounting hole 21, so that the reinforcing plate 62 can be installed at the mounting opening 23 to close the mounting hole 21.

[0058] Among them, the length of the reinforcing plate 62 is slightly greater than the length of the installation opening 23. Through holes 66 are provided at both ends of the reinforcing plate 62. First connection holes 22 are provided on both sides of the installation opening 23. The positions of the first connection holes 22 correspond to those of the second connection holes 66 and have the same dimensions. Thus, a connecting member can pass through the first connection holes 22 and the second connection holes 66 in sequence, so that the reinforcing plate 62 is connected to both sides of the installation opening 23 to close the installation opening 23 and the installation hole 21, realizing the connection between the reinforcing plate 62 and the rear steering knuckle 2. The connecting member can be a bolt, a screw, etc., to realize the detachable connection between the reinforcing plate 62 and the rear steering knuckle 2, facilitating the installation and disassembly of the reinforcing plate 62 and improving the assembly efficiency.

[0059] In practice, as Figure 9 shown, the first connecting member 61 can pass through the second connection holes 66 and the reinforcing plate 62 in sequence to be connected to the hub bearing 4. That is, the reinforcing plate 62 can not only close the installation opening 23 to improve the strength of the rear steering knuckle 2, but also be used to connect the hub bearing 4 to improve the installation strength of the hub bearing 4.

[0060] In some embodiments, the rear steering knuckle 2 is further formed with a fixed through hole 24. The fixed through hole 24 is located below the installation part, and the end of the axle cross beam 1 is inserted into the fixed through hole 24.

[0061] Specifically, the fixed through hole 24 is used to connect the axle cross beam 1, so that the rear steering knuckle 2 can be stably connected to the axle cross beam 1, improving the overall structural strength of the load-bearing bridge structure 100 and ensuring the driving safety of the vehicle. As Figure 4 and Figure 5 shown, a fixed through hole 24 is formed on the outer side of the rear steering knuckle 2. The fixed through hole 24 is located below the installation part, so that the axle cross beam 1 can be stably connected to the rear steering knuckle 2, and at the same time, it does not affect the installation and operation of other components such as the rear drive shaft 3. Among them, the fixed through hole 24 can be configured as a rectangular hole to be adapted to the shape and dimensions of the axle cross beam 1, so that the end of the axle cross beam 1 can be inserted into the fixed through hole 24 and welded to the axle cross beam 1 to form an integral structure, realizing the stable connection between the axle cross beam 1 and the rear steering knuckle 2, improving the connection strength between the axle cross beam 1 and the rear steering knuckle 2, and further improving the load-bearing capacity of the load-bearing bridge structure 100.

[0062] In some other embodiments, a plurality of third connection holes 67 are further provided on the inner side of the rear steering knuckle 2. The number of the third connection holes 67 can be set to two, three or even more, as Figure 4 and Figure 5As shown, there are two third connection holes 67, which are used to connect the brake caliper 51. The multiple third connection holes 67 penetrate along the thickness direction of the rear steering knuckle 2, and can be detachably connected to the brake caliper 51 through second connecting members 68 such as bolts and screws, realizing the connection between the brake caliper 51 and the rear steering knuckle 2.

[0063] In some embodiments, the axle crossbeam 1 includes a first crossbeam plate 11 and a second crossbeam plate 12. The first crossbeam plate 11 and the second crossbeam plate 12 are spliced and connected, and both the first crossbeam plate 11 and the second crossbeam plate 12 are configured to be bent along the longitudinal direction of the vehicle.

[0064] Specifically, as Figure 1 shown, the axle crossbeam 1 includes a first crossbeam plate 11 and a second crossbeam plate 12. The first crossbeam plate 11 and the second crossbeam plate 12 are configured with the same structure and both are bent backward along the longitudinal direction of the vehicle, so that the first crossbeam plate 11 and the second crossbeam plate 12 can be spliced and connected into a whole by welding. In this way, the overall structural strength and load-bearing capacity of the axle crossbeam 1 can be improved, the load generated during the vehicle driving process can be effectively dispersed, the service life of the load-bearing bridge structure 100 can be extended. At the same time, the backward-bent axle crossbeam 1 can vacate enough layout space for the drive motor, improve the structural compactness of the load-bearing bridge structure 100, and at the same time, provide sufficient jounce space for the rear suspension, improving the driving stability of the vehicle.

[0065] In some embodiments, the length of the first crossbeam plate 11 in the transverse direction of the vehicle is the same as the length of the second crossbeam in the transverse direction of the vehicle, and the first crossbeam plate 11 and the second crossbeam plate 12 are spliced along the vertical direction of the vehicle.

[0066] Specifically, as Figure 1 shown, the length of the first crossbeam plate 11 in the transverse direction of the vehicle is the same as the length of the second crossbeam plate 12 in the transverse direction of the vehicle, that is, the extension lengths of the first crossbeam plate 11 and the second crossbeam plate 12 in the left-right direction are the same, which is conducive to splicing the first crossbeam plate 11 and the second crossbeam plate 12 into a symmetrical overall structure, improving the balance and integrity of the axle crossbeam 1, so that the vehicle can be evenly stressed during driving.

[0067] In actual design, the axle crossbeam 1 can be formed by stamping high-strength steel plates, and the first crossbeam plate 11 and the second crossbeam plate 12 can be spliced by welding to ensure the structural strength of the axle crossbeam 1.

[0068] Among them, the first crossbeam plate 11 is located on the upper side and the second crossbeam plate 12 is located on the lower side, that is, the first crossbeam plate 11 and the second crossbeam plate 12 are spliced into a whole along the vertical direction of the vehicle, i.e., the up-down direction. The vertical splicing can enhance the rigidity and load-bearing capacity of the axle crossbeam 1, and at the same time, it is also conducive to reducing the deformation of the axle crossbeam 1 in the transverse direction, thereby improving the overall stability of the load-bearing bridge structure 100.

[0069] In some embodiments, the carrier bridge structure 100 further includes: two limit block brackets 63, which are respectively disposed above both ends of the axle crossbeam 1 and located between the two rear steering knuckles 2.

[0070] As Figure 1 shown, the carrier bridge structure 100 is also provided with two limit block brackets 63. The limit block brackets 63 are support structures for the axle crossbeam 1, used to bear part of the load borne by the axle crossbeam 1, reduce the stress burden on the axle crossbeam 1, so as to improve the load-bearing capacity and stability of the axle crossbeam 1, and limit the displacement range of the axle crossbeam 1 during vehicle driving to prevent damage, etc. The two limit block brackets 63 are respectively disposed above both ends of the axle crossbeam 1 and located between the two rear steering knuckles 2. In this way, the two limit block brackets 63 can participate in the action when the rear suspension bounces up, can limit the excessive bounce of the rear wheels, buffer the impact load of the suspension bounce up, ensure the stable driving of the vehicle, and the limit block brackets 63 are arranged close to the rear steering knuckles 2, so that when the vehicle turns or is affected by a lateral force, the axle crossbeam 1 can maintain a stable posture, thus ensuring the stability of the vehicle.

[0071] In actual design, the limit block bracket 63 can be formed by stamping a high-strength plate and welded to the axle crossbeam 1 to ensure its strength and stiffness and improve the connection strength with the axle crossbeam 1.

[0072] In some other embodiments, the carrier bridge structure 100 further includes: two axle leaf spring mounting bases 64, which are respectively disposed above both ends of the axle crossbeam 1 and located between the two rear steering knuckles 2.

[0073] Specifically, as Figure 1 shown, the carrier bridge structure 100 is also provided with two axle leaf spring mounting bases 64. The axle leaf spring mounting bases 64 are used to support and connect the leaf springs, ensuring that the leaf springs can be stably installed on the carrier bridge structure 100, so as to effectively transmit the load and vibration of the wheels. Among them, the axle leaf spring mounting bases 64 are configured as rectangular plates, and the leaf springs are mounted on the surfaces of the axle leaf spring mounting bases 64. The two axle leaf spring mounting bases 64 are respectively disposed above both ends of the axle crossbeam 1 and located between the two rear steering knuckles 2, and one-sided axle leaf spring mounting base 64 is located between the limit block bracket 63 and the rear steering knuckle 2, so that the leaf springs can distribute the force evenly when bearing the load, reduce stress concentration, and ensure the stability and safety of the vehicle during the turning process.

[0074] As Figure 2As shown, the axle leaf spring mounting base 64 is provided with five fourth connection holes 69, four of which are arranged along the periphery of the axle leaf spring mounting base 64 and can be configured as U-shaped U-bolt mounting holes 21, and one is arranged in the middle of the axle leaf spring mounting base 64 and can be configured as a leaf spring center positioning pin mounting hole 21 for the assembly and positioning of the leaf spring to ensure the accuracy and precision of the leaf spring mounting position.

[0075] As Figure 5 shown, the axle leaf spring mounting base 64 is provided with an inclination angle A0 relative to the horizontal plane, that is, the axle leaf spring mounting base 64 is inclined to ensure that the jumping trajectory of the wheel is more in line with the design expectation. And there is a height difference value H0 between the center of the mounting hole 21, that is, the rear wheel axle center, and the upper surface of the axle leaf spring mounting base 64, and the rear leaf spring is arranged in this position interval. In this way, the layout position of the rear suspension can be greatly reduced to meet the lower layout requirements of the rear floor and reduce the layout height of the rear floor, thereby further improving the stability of the vehicle.

[0076] In some other embodiments, the carrier axle structure 100 further includes: two shock absorber lower brackets 65, and the two shock absorber lower brackets 65 are respectively arranged on the front sides of both ends of the axle cross member 1 and are located between the two rear steering knuckles 2.

[0077] Specifically, as Figure 1 shown, the carrier axle structure 100 is further provided with two shock absorber lower brackets 65. The shock absorber lower brackets 65 are used to support and fix the shock absorbers so that the shock absorbers can be stably installed on the rear suspension. At the same time, the shock absorber lower brackets 65, as the force transmission mechanism of the rear suspension shock absorbers, can transmit the impact force from the wheels and the ground to the rear suspension shock absorbers, thereby effectively transmitting and dispersing the impact force from the wheels and the ground. Among them, the shock absorber lower brackets 65 are configured as "U" - shaped structures. The two shock absorber lower brackets 65 are respectively arranged on the front sides of both ends of the axle cross member 1, located between the two rear steering knuckles 2, and between the unilateral limit block bracket 63 and the axle leaf spring mounting base 64 on one side. In this way, it is beneficial for the shock absorber to be firmly connected to the axle to effectively absorb and mitigate the impact and vibration between the wheel and the road surface. At the same time, being close to the rear steering knuckle 2 can ensure that the shock absorber can work normally when the vehicle turns or changes direction, reducing roll and sway.

[0078] As Figure 6 shown, two coaxial fifth connection holes 70 can also be provided on the shock absorber lower bracket 65, and the rear suspension shock absorber can be connected to the shock absorber lower bracket 65 through the fifth connection holes 70.

[0079] In actual design, the shock absorber lower bracket 65 can be formed by stamping with high-strength plates and welded to the axle cross member 1 to ensure its strength and stiffness and improve the connection strength with the axle cross member 1.

[0080] In some embodiments, the middle portion of the axle cross beam 1 is configured to be bent rearward in the longitudinal direction of the vehicle.

[0081] Specifically, Figure 2 As shown, the middle part of the axle beam 1 is structured to bend backward along the longitudinal direction of the vehicle for a distance, and the two ends of the axle beam 1 are straight sections connected to the middle part by bending, so that there is an eccentricity S1 between the two ends and the middle part of the axle beam 1, so that the axle beam 1 forms an eccentricity S1 in the front-to-back direction of the whole vehicle. Among them, the middle curved section includes three parts, the middle part of the curved section is a straight section and extends in the transverse direction, and its length is W1, and the two ends of the curved section are curved sections and extend obliquely.

[0082] Therefore, through the eccentrically arranged curved axle beam 1 structure, a recessed space area can be formed in the middle of the axle beam 1, freeing up sufficient layout space for the multi-in-one drive motor, thereby lowering the installation position of the drive motor to a certain extent, lowering the center of gravity of the vehicle, lowering the height of the vehicle body floor surface, and ensuring the stability of the vehicle.

[0083] In other embodiments, in the vertical direction of the vehicle, the height of the middle portion of the axle cross beam 1 is higher than the height of the ends of the axle cross beam 1 .

[0084] Specifically, Figure 3 As shown, the axle beam 1 adopts a variable cross-section height, and the height H1 of the middle part of the axle beam 1 is higher than the height H2 of the end part of the axle beam 1. In this way, the axle beam 1 can achieve the best material utilization rate and the best stiffness-to-mass ratio, that is, the stiffness and strength of the axle beam 1 are ensured while reducing the manufacturing cost.

[0085] The utility model also provides a vehicle.

[0086] The vehicle according to the embodiment of the present utility model comprises the load-bearing bridge structure 100 according to any one of the above embodiments.

[0087] In the load-bearing bridge structure 100, by bending at least a portion of the axle beam 1 along the longitudinal direction of the vehicle and setting the height of the mounting portion formed on the rear steering knuckle 2 to be higher than the height of the axle beam 1, the wheel center is offset, which can provide sufficient layout space for the multi-in-one drive motor and facilitate the installation of the multi-in-one drive motor. At the same time, the height of the vehicle body floor surface is reduced, providing sufficient jumping space for the suspension, thereby improving the driving stability of the vehicle.

[0088] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0089] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A load-bearing bridge structure, characterized in that, Comprising: An axle cross member, the axle cross member extending along the transverse direction of the vehicle, at least part of the axle cross member being bent along the longitudinal direction of the vehicle; Two rear steering knuckles, the two rear steering knuckles being respectively connected to two ends of the axle cross member, and the rear steering knuckles being formed with mounting portions for mounting rear drive shafts, in the vertical direction of the vehicle, the height of the mounting portions being higher than the height of the axle cross member.

2. The load-bearing bridge structure according to claim 1, wherein The mounting portion is configured to penetrate through the rear steering knuckle along the transverse direction of the vehicle, and the mounting hole is for passing through the rear drive shaft; Wherein, the rear steering knuckle is further provided with a plurality of first connection holes distributed around the mounting hole, and the plurality of first connection holes are for detachably connecting to a wheel hub bearing through a first connecting member.

3. The load-bearing bridge structure according to claim 2, characterized in that, The rear steering knuckle is further formed with a mounting opening, the mounting opening communicating with the top of the mounting hole, and the rear drive shaft assembly is adapted to enter the mounting hole from the mounting opening.

4. The load-bearing bridge structure according to claim 3, characterized in that, It further includes a reinforcing plate, the reinforcing plate being detachably connected to the rear steering knuckle and adapted to be connected to both sides of the mounting opening.

5. The load-bearing bridge structure according to any one of claims 1-4, characterized in that The rear steering knuckle is further formed with a fixed through hole, the fixed through hole being located below the mounting portion, and the end of the axle cross member penetrates through the fixed through hole.

6. The load-bearing bridge structure according to any one of claims 1-4, characterized in that, The axle cross member includes a first cross member plate and a second cross member plate, the first cross member plate and the second cross member plate being spliced and connected, and both the first cross member plate and the second cross member plate being configured to be bent along the longitudinal direction of the vehicle.

7. The load-bearing bridge structure according to claim 6, wherein The length of the first cross member plate in the transverse direction of the vehicle is the same as the length of the second cross member in the transverse direction of the vehicle, and the first cross member plate and the second cross member plate are spliced along the vertical direction of the vehicle.

8. The load-bearing bridge structure according to any one of claims 1-4, characterized in that, Comprising: Two limit block brackets, the two limit block brackets being respectively arranged above two ends of the axle cross member and located between the two rear steering knuckles; And / or, two axle leaf spring mounting bases, the two axle leaf spring mounting bases being respectively arranged above two ends of the axle cross member and located between the two rear steering knuckles; And / or, two shock absorber lower brackets, the two shock absorber lower brackets being respectively arranged on the front sides of two ends of the axle cross member and located between the two rear steering knuckles.

9. The load-bearing bridge structure according to any one of claims 1-4, characterized in that, The middle part of the axle cross member is configured to be bent backward along the longitudinal direction of the vehicle; And / or, in the vertical direction of the vehicle, the height of the middle part of the axle cross member is higher than the height of the end part of the axle cross member.

10. A vehicle, characterized in that, Comprising the load-bearing bridge structure according to any one of claims 1-9.

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