Vehicle fixing combined support and cab rear suspension support assembly comprising same

Abstract

The utility model relates to the technical field of vehicle fixing supports, in particular to a vehicle fixing combined support and a cab rear overhang support assembly comprising the vehicle fixing combined support, which comprise a welding body used for fixing and supporting each mounting frame, and one side of the welding body is used for mounting a base fuse box, a battery management system (BMS) and a vehicle control unit (VCU); the water tank mounting frame is mounted on the other side of the welding body and used for fixing the expansion water tank; the receiver mounting frame is mounted on the welding body and is used for fixing an upper receiver; the controller mounting frame is mounted on the welding body and is used for fixing an upper-mounted controller; the rear suspension bracket assembly is used for solving the technical problems of poor heat dissipation caused by unreasonable layout of mounting parts on the rear suspension bracket assembly, performance weakening caused by mutual vibration and inconvenience in mounting and maintenance in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle fixing brackets, in particular to a vehicle fixing combined bracket and a cab rear suspension bracket assembly including the same. Background Art

[0002] The descriptions in this section only provide background information related to the present disclosure and do not constitute prior art.

[0003] At present, with the increasing maturity of new energy technologies, new energy vehicles have developed rapidly. There are many components related to new energy, and the corresponding installation positions and spaces occupied on the vehicle have also increased. Among them, important components of electric trucks such as the vehicle control unit (VCU) and the battery management system (BMS) need to be fixed on the vehicle frame through the cab rear suspension bracket assembly respectively, and the cab rear suspension bracket is installed at the rear end of the cab. The above-mentioned component types and quantities are numerous, resulting in various bracket shapes, chaotic pipeline layout directions, occupying most of the space, inconvenient maintenance, increasing the vehicle layout difficulty, wasting most of the space, and at the same time, multiple technical problems such as the mutual influence caused by vibration, the heat dissipation problem caused by work heat generation, and the strength of the rear suspension bracket need to be considered. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vehicle fixing combined bracket and a cab rear suspension bracket assembly including the same, which are used to solve the technical problems of poor heat dissipation, performance weakening caused by mutual vibration, and inconvenient installation and maintenance existing in the installation of components on the existing rear suspension bracket assembly.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vehicle fixing combined bracket includes:

[0007] A welding body for fixing and supporting each mounting bracket, and one side of which is used to mount a base fuse box, a battery management system (BMS) and a vehicle control unit (VCU);

[0008] A water tank mounting bracket installed on the other side of the welding body and used to fix an expansion water tank;

[0009] A receiver mounting bracket installed on the welding body for fixing an upper receiver;

[0010] A controller mounting bracket installed on the welding body for fixing an upper controller;

[0011] The receiver mounting bracket and the controller mounting bracket are on the same side of the water tank mounting bracket with respect to the welded body, and the receiver mounting bracket and the controller mounting bracket are located below the water tank mounting bracket;

[0012] The base fuse box and the vehicle controller VCU are mounted side by side on the welded body. The battery management system BMS is located below the base fuse box, and the battery management system BMS is stagger-mounted with respect to the receiver mounting bracket and the controller mounting bracket.

[0013] Furthermore, the welded body includes a horizontally arranged upper cross beam, a support beam, and a lower cross beam. The upper cross beam and the support beam are on the same horizontal line and are parallel to the lower cross beam. Both ends of the upper cross beam and both ends of the support beam are respectively connected to the lower cross beam through vertical beams. The upper cross beam and the support beam share a vertical beam. Pipeline mounting brackets are also provided on the outer sides of the vertical beams at both ends of the upper cross beam and the support beam, and end brackets are provided on the outer sides of the pipeline mounting brackets.

[0014] Furthermore, a fuse box upper mounting bracket is provided on the support beam, and a fuse box lower mounting bracket is provided on the lower cross beam. The fuse box upper mounting bracket and the fuse box lower mounting bracket are used for mounting and fixing the base fuse box.

[0015] Furthermore, the water tank mounting bracket is respectively connected and fixed to the welded body through a water tank upper mounting plate and a water tank lower mounting plate. The water tank upper mounting plate includes a U-shaped convex part, which is connected to the connecting part through an inclined avoidance part. A welding bottom is provided at the bottom of the connecting part. The welding bottom and the connecting part form an L-shaped card slot for welding. A clamping part for inserting and mounting on the welded body is provided on the welding convex part. The U-shaped convex part protrudes from the connecting part. The water tank lower mounting plate is set as a U-shaped structure, and this U-shaped structure is provided with an L-shaped card slot for contact welding with the lower cross beam.

[0016] Furthermore, both the fuse box upper mounting bracket and the fuse box lower mounting bracket are set as L-shaped bent plates. The bottom edge of the fuse box upper mounting bracket is inserted between the bottom surface of the connecting part of the water tank upper mounting plate and the upper cross beam or the support beam. The bottom edge of the fuse box lower mounting bracket is inserted between the water tank lower mounting plate and the lower cross beam. The vertical edge of the fuse box upper mounting bracket is in contact welding with the vertical surface of the connecting part of the water tank upper mounting bracket. The vertical edge of the fuse box lower mounting bracket is in contact welding with the vertical surface of the water tank lower mounting bracket.

[0017] Furthermore, a VCU mounting plate and a controller connecting plate are also provided on the lower cross beam. The VCU mounting plate is set as an L-shaped bent plate, with one side welded and mounted on the lower surface of the lower cross beam, and the other side being a vertical surface. The controller connecting plate is set as a U-shaped bent plate, and one U-shaped end face of this U-shaped bent plate is welded and mounted on the lower surface of the lower cross beam.

[0018] Furthermore, the water tank mounting bracket is set as a plate shape, and a through hole for the water tank to pass through is provided at the center of the plate.

[0019] Further, the controller mounting bracket is mounted on the controller connection plate. The controller mounting bracket is an irregular plate with a U-shaped protrusion in the center, and through holes are provided on the U-shaped protrusion.

[0020] Further, the receiver mounting bracket is mounted on the lower cross beam. The receiver mounting bracket is a structure in the shape of a corner of a cuboid formed by welding an L-shaped bent plate and a vertical plate, and the thickness of the accommodating space formed by the L-shaped bent plate and the vertical plate is greater than the thickness of the upper-mounted receiver.

[0021] A cab rear suspension bracket assembly includes the above-mentioned vehicle fixing combined bracket, and further includes a base fuse box, a battery management system BMS, a vehicle controller VCU, a power system expansion tank, a chassis system expansion tank, an upper-mounted receiver, and an upper-mounted controller mounted on the fixing combined bracket. Among them, the base fuse box, the battery management system BMS, and the vehicle controller VCU are mounted on the same side of the fixing combined bracket, and the power system expansion tank, the chassis system expansion tank, the upper-mounted receiver, and the upper-mounted controller are located on the other side of the fixing combined bracket. Moreover, the base fuse box, the vehicle controller VCU, the power system expansion tank, and the chassis system expansion tank are all located in the upper layer, and the battery management system BMS, the upper-mounted receiver, and the upper-mounted controller are all located in the lower layer. The pipelines of the base fuse box, the vehicle controller VCU, and the power system expansion tank are all fixed on the pipeline mounting brackets on both sides through clamps.

[0022] Compared with the prior art, the technical solution of the present utility model has the following beneficial effects:

[0023] (1). By setting the fixing combined bracket, the present utility model integrally mounts multiple components such as the base fuse box, the battery management system BMS, the vehicle controller VCU, the power system expansion tank, the chassis system expansion tank, the upper-mounted receiver, and the upper-mounted controller. The structure is compact, saving the installation occupied space of each component, reducing the vehicle body weight while improving the installation efficiency, and better integrating performance requirements such as heat dissipation, vibration reduction, pipeline routing, installation, and later maintenance by defining the installation positions of each component.

[0024] (2) The utility model limits the specific structure of the welding body, which not only improves the support for the installation and fixation of various components, but also ensures the structural strength and deformation resistance of the welding body, and reduces the weight of the vehicle body as much as possible while improving the heat dissipation problem and vibration resistance caused by the concentrated installation of various components; by limiting the coordinated cooperation of the water tank mounting frame, the water tank upper mounting plate and the water tank lower mounting plate, the water tank is fixed while saving the installation space, and the stability of the water tank installation is ensured; by limiting the upper mounting frame of the fuse box and the lower mounting frame of the fuse box, the chassis fuse box is fixedly installed and located at the rear side of the water tank, which ensures timely heat dissipation and stability of system operation; by limiting the structure and installation position of the controller connecting plate and the controller mounting frame, not only the stability of the installation of the upper controller is ensured, but also the heat dissipation performance of the upper controller is ensured; by limiting the structure of the receiver mounting frame, the upper receiver is fixedly installed while protecting the upper receiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the rear suspension bracket assembly of the utility model installed on the vehicle frame;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the cab rear suspension bracket assembly;

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the cab rear suspension bracket assembly from another perspective;

[0028] Figure 4 It is a front view of the cab rear suspension bracket assembly;

[0029] Figure 5 It is a rear view of the cab rear suspension bracket assembly;

[0030] Figure 6 is a schematic diagram of the three-dimensional structure of the fixed bracket;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of the fixing bracket from another perspective;

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the welding body;

[0033] Figure 9 It is a front view of the welding body;

[0034] Figure 10 It is a schematic diagram of the three-dimensional structure of the mounting plate on the water tank;

[0035] Figure 11 It is a side view of the mounting plate on the water tank;

[0036] Figure 12Schematic three-dimensional structure diagram of the water tank mounting bracket;

[0037] Figure 13 Schematic three-dimensional structure diagram of the controller mounting bracket;

[0038] Figure 14 Schematic three-dimensional structure diagram of the receiver mounting bracket.

[0039] In the figure, 100 is the vehicle frame;

[0040] 200 is the cab rear suspension bracket assembly;

[0041] 300 is the fixed combined bracket; 301 is the welded body; 302 is the water tank mounting bracket; 303 is the receiver mounting bracket; 304 is the controller mounting bracket; 3011 is the pipeline mounting bracket; 3012 is the vertical beam; 3013 is the upper cross beam; 3014 is the upper mounting bracket for the fuse box; 3015 is the support beam; 3016 is the end bracket; 3017 is the lower mounting bracket for the fuse box; 3018 is the VCU mounting plate; 3019 is the controller connection plate; 3020 is the lower cross beam; 3021 is the lower mounting plate for the water tank; 3022 is the upper mounting plate for the water tank; 30221 is the U-shaped convex part; 30222 is the inclined avoidance part; 30223 is the connecting part; 30224 is the welded bottom; 30225 is the clamping part;

[0042] 501 is the base fuse box; 502 is the battery management system BMS; 503 is the vehicle controller VCU; 504 is the expansion water tank for the power system; 505 is the expansion water tank for the chassis system; 506 is the upper-mounted controller; 507 is the upper-mounted receiver. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] The accompanying drawings are only for illustrative purposes and cannot be construed as a limitation to this patent;

[0045] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0046] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0047] In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects and do not have to be used to describe a specific order or sequence, nor can they be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] In addition, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments.

[0049] To solve the limitations of the prior art, this embodiment provides a technical solution. The following further illustrates the technical solution of the present utility model in conjunction with the accompanying drawings and embodiments.

[0050] The present utility model mainly aims at the problem that in the case of numerous vehicle components in the related art, independent installation increases the weight of the vehicle frame 100 itself and the installation is complicated and not easy to maintain later. The present utility model is a structural design that integrates and installs various components on the vehicle fixed combination bracket 300, and at the same time comprehensively considers problems such as heat dissipation, vibration, structural stability, pipeline routing, and pre-installation and post-maintenance of the integrated installation of various components.

[0051] See the attached Figure 6-9 , a vehicle fixed combination bracket 300, specifically, includes the following structures:

[0052] Welding body 301, see the attached Figure 8 and 9, used to fix and support each mounting frame, one side of which is used to install the base fuse box 501, the battery management system BMS502 and the vehicle controller VCU503; specifically, the welding body 301 includes a horizontally arranged upper beam 3013, a support beam 3015 and a lower beam 3020, the upper beam 3013 and the support beam 3015 are located on the same horizontal line and are arranged parallel to the lower beam 3020, and the two ends of the upper beam 3013 and the two ends of the support beam 3015 are respectively connected to the lower beam 3020 through the vertical beam 3012 0 connection, the upper crossbeam 3013 and the support beam 3015 share a vertical beam 3012, that is, there are three vertical beams 3012, and the bottoms are vertically connected to the lower crossbeam 3020, and the support beam 3015 and the upper crossbeam 3013 are separated at the same time. Pipeline mounting frames 3011 are also arranged on the outside of the vertical beams 3012 at both ends of the upper crossbeam 3013 and the support beam 3015, and end brackets 3016 are arranged on the outside of the pipeline mounting frame 3011. Here, the pipeline mounting frame 3011 is mainly used to provide fixed support for the pipelines of various components. The upper mounting frame 3014 of the fuse box is arranged on the support beam 3015, and the lower mounting frame 3017 of the fuse box is arranged on the lower crossbeam 3020. The upper mounting frame 3014 of the fuse box and the lower mounting frame 3017 of the fuse box are used to install and fix the base fuse box 501. Specifically, the upper mounting frame 3014 of the fuse box and the lower mounting frame 3017 of the fuse box are both configured as L-shaped bent plates, and the bottom edge of the upper mounting frame 3014 of the fuse box is inserted between the bottom surface of the connecting portion 0223 of the upper mounting plate 3022 of the water tank and the upper cross beam 3013 or the support beam 3015. It can be understood here that the utility model includes two water tanks, so the number of the upper mounting plates 3022 of the water tank is also two, which are respectively installed on the upper cross beam 3013 and the support beam 3015, and the bottom edge of the lower mounting frame 3017 of the fuse box is inserted between the lower mounting plate 3021 of the water tank and the lower cross beam 3020, and the vertical edge of the upper mounting frame 3014 of the fuse box is contacted and welded with the vertical surface of the connecting portion 0223 of the upper mounting frame of the water tank, and the vertical edge of the lower mounting frame 3017 of the fuse box is contacted and welded with the vertical surface of the lower mounting frame of the water tank. The plug-in method here not only saves installation space, but also improves the strength and stability of the overall structure. A VCU mounting plate 3018 and a controller connecting plate 3019 are also provided on the lower cross beam 3020, wherein the VCU mounting plate 3018 is configured as an L-shaped bent plate, one side of which is welded and installed on the lower surface of the lower cross beam 3020, and the other side is a vertical surface. By limiting the specific structure of the welding body 301, not only the support for the installation and fixation of various components is improved, while ensuring the structural strength and deformation resistance of the welding body 301, but also the weight of the vehicle body is reduced as much as possible while improving the heat dissipation problem and vibration resistance caused by the concentrated installation of various components.

[0053] Water tank mounting bracket 302, see attached Figure 10 and 11, the water tank mounting bracket 302 is arranged in a plate shape, and a through hole for the water tank to penetrate is arranged at the center of the plate. It is installed on the other side of the welding body 301 and is used to fix the expansion water tank. Specifically, the water tank mounting bracket 302 is respectively connected and fixed to the welding body 301 through the upper water tank mounting plate 3022 and the lower water tank mounting plate 3021. The upper water tank mounting plate 3022 includes a U-shaped convex part 30221, and the U-shaped convex part 30221 is connected to the connecting part 0223 through an inclined avoidance part 30222. Here, the inclination angle of the inclined avoidance part 30222 is 15° - 60°, preferably 30°. A welding bottom 30224 is arranged at the bottom of the connecting part 0223. The welding bottom 30224 and the connecting part 0223 form an L-shaped clamping groove for welding. A clamping part 30225 for inserting and installing on the welding body 301 is arranged on the welding convex part. The U-shaped convex part 30221 protrudes from the connecting part 0223. The lower water tank mounting plate 3021 is arranged in a U-shaped structure, and the U-shaped structure is provided with an L-shaped clamping groove for contact welding with the lower cross beam 3020. By defining the coordinated cooperation of the water tank mounting bracket 302, the upper water tank mounting plate 3022 and the lower water tank mounting plate 3021, while saving the installation occupied space when fixing the water tank, the stability of the water tank installation is ensured at the same time.

[0054] The receiver mounting bracket 303, see the appendix Figure 14 , is installed on the welding body 301 to fix the upper-mounted receiver 507. Specifically, the receiver mounting bracket 303 is installed on the lower cross beam 3020. The receiver mounting bracket 303 is arranged in a structure in the shape of a corner of a cuboid formed by welding an L-shaped bent plate and a vertical plate, and the thickness of the accommodating space formed by the L-shaped bent plate and the vertical plate is greater than the thickness of the upper-mounted receiver 507. Here, it can be understood that the main purpose of the shape setting of the receiver mounting bracket 303 is to provide a semi-closed space for the upper-mounted receiver 507 for installation and protection at the same time.

[0055] The controller mounting bracket 304, see the appendix Figure 13, which is installed on the welding body 301 for fixing the upper controller 506; specifically, the controller mounting bracket 304 is installed on the controller connecting plate 3019, and the controller connecting plate 3019 is set as a U-shaped bent plate. One U-shaped end face of the U-shaped bent plate is welded and installed on the lower surface of the lower cross beam 3020. The controller mounting bracket 304 is an irregular plate with a U-shaped protrusion in the center, and through holes are provided on the U-shaped protrusion. The receiver mounting bracket 303 and the controller mounting bracket 304 are on the same side of the water tank mounting bracket 302, and the receiver mounting bracket 303 and the controller mounting bracket 304 are located below the water tank mounting bracket 302; the base fuse box 501 and the vehicle controller VCU503 are installed side by side on the welding body 301, and the battery management system BMS502 is located below the base fuse box 501. The battery management system BMS502 is installed staggeredly with the receiver mounting bracket 303 and the controller mounting bracket 304.

[0056] See the appendix Figure 1-5 , a cab rear suspension bracket assembly 200, including the above-mentioned vehicle fixing combined bracket 300, and further including a base fuse box 501, a battery management system BMS502, a vehicle controller VCU503, a power system expansion water tank 504, a chassis system expansion water tank 505, an upper receiver 507 and an upper controller 506 installed on the fixing combined bracket 300. Among them, the base fuse box 501, the battery management system BMS502, and the vehicle controller VCU503 are installed on the same side of the fixing combined bracket 300, and the power system expansion water tank 504, the chassis system expansion water tank 505, the upper receiver 507 and the upper controller 506 are located on the other side of the fixing combined bracket 300. Moreover, the base fuse box 501, the vehicle controller VCU503, the power system expansion water tank 504, and the chassis system expansion water tank 505 are all located in the upper layer, and the battery management system BMS502, the upper receiver 507 and the upper controller 506 are all located in the lower layer. The pipelines of the base fuse box 501, the vehicle controller VCU503, and the power system expansion water tank 504 are all fixed on the pipeline mounting brackets 3011 on both sides through clamps.

[0057] When the utility model is in use, first install the respective components at the corresponding positions on the fixing combined bracket 300, and at the same time fix the pipelines. Then install the fixing combined bracket 300 on the cab rear suspension bracket through the end brackets 3016 at both ends. Finally, install the assembled cab rear suspension bracket assembly 200 on the vehicle frame 100. The entire installation process is convenient and fast, and is convenient for later maintenance.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0059] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vehicle fixed combined bracket, characterized in that: include: A welding body (301) is used to fix and support each mounting frame, and one side of the welding body is used to install a base fuse box (501), a battery management system BMS (502) and a vehicle controller VCU (503); A water tank mounting frame (302) is mounted on the other side of the welding body (301) and is used to fix the expansion water tank; A receiver mounting frame (303) mounted on the welding body (301) for fixing the upper mounted receiver (507); A controller mounting frame (304) is mounted on the welding body (301) and is used to fix the upper mounted controller (506); The receiver mounting frame (303) and the controller mounting frame (304) are all located on the same side of the welding body (301) as the water tank mounting frame (302), and the receiver mounting frame (303) and the controller mounting frame (304) are located below the water tank mounting frame (302); The base fuse box (501) and the vehicle controller VCU (503) are installed side by side on the welding body (301), the battery management system BMS (502) is located below the base fuse box (501), and the battery management system BMS (502) is installed in a staggered manner with the receiver mounting frame (303) and the controller mounting frame (304).

2. A vehicle fixing combined bracket according to claim 1, characterized in that: The welding body (301) comprises an upper crossbeam (3013) and a support beam (3015) and a lower crossbeam (3020) which are arranged horizontally. The upper crossbeam (3013) and the support beam (3015) are located on the same horizontal line and are arranged parallel to the lower crossbeam (3020). The two ends of the upper crossbeam (3013) and the two ends of the support beam (3015) are respectively connected to the lower crossbeam (3020) through vertical beams (3012). The upper crossbeam (3013) and the support beam (3015) share a vertical beam (3012). Pipeline mounting frames (3011) are also arranged on the outer sides of the vertical beams (3012) at both ends of the upper crossbeam (3013) and the support beam (3015), and end brackets (3016) are arranged on the outer sides of the pipeline mounting frames (3011).

3. A vehicle fixing combined bracket according to claim 2, characterized in that: The support beam (3015) is provided with a fuse box upper mounting frame (3014), and the lower cross beam (3020) is provided with a fuse box lower mounting frame (3017). The fuse box upper mounting frame (3014) and the fuse box lower mounting frame (3017) are used to install and fix the base fuse box (501).

4. The vehicle fixing combined bracket according to claim 3, characterized in that: The water tank mounting frame (302) is connected and fixed to the welding body (301) through the water tank upper mounting plate (3022) and the water tank lower mounting plate (3021), respectively; the water tank upper mounting plate (3022) comprises a U-shaped protrusion (30221); the U-shaped protrusion (30221) is connected to the connecting portion (0223) through an inclined avoidance portion (30222); a welding bottom (30224) is arranged at the bottom of the connecting portion (0223); the welding bottom (30224) and the connecting portion (0223) form an L-shaped slot for welding; a clamping portion (30225) for inserting and mounting on the welding body (301) is arranged on the welding protrusion; the U-shaped protrusion (30221) protrudes from the connecting portion (0223); the water tank lower mounting plate (3021) is arranged as a U-shaped structure; the U-shaped structure is arranged as an L-shaped slot for contact welding with the lower cross beam (3020).

5. The vehicle fixing combined bracket according to claim 4, characterized in that: The fuse box upper mounting frame (3014) and the fuse box lower mounting frame (3017) are both configured as L-shaped bent plates, and the bottom edge of the fuse box upper mounting frame (3014) is inserted between the bottom surface of the connecting portion (0223) of the water tank upper mounting plate (3022) and the upper crossbeam (3013) or the supporting beam (3015), and the bottom edge of the fuse box lower mounting frame (3017) is inserted between the water tank lower mounting plate (3021) and the lower crossbeam (3020), and the vertical edge of the fuse box upper mounting frame (3014) is welded in contact with the vertical surface of the connecting portion (0223) of the water tank upper mounting frame, and the vertical edge of the fuse box lower mounting frame (3017) is welded in contact with the vertical surface of the water tank lower mounting frame.

6. The vehicle fixing combined bracket according to claim 5, characterized in that: A VCU mounting plate (3018) and a controller connecting plate (3019) are also provided on the lower cross beam (3020); the VCU mounting plate (3018) is provided as an L-shaped bent plate, one side of which is welded and mounted on the lower surface of the lower cross beam (3020), and the other side is a vertical surface; the controller connecting plate (3019) is provided as a U-shaped bent plate, one U-shaped end face of which is welded and mounted on the lower surface of the lower cross beam (3020).

7. The vehicle fixing combined bracket according to claim 1, characterized in that: The water tank mounting frame (302) is configured in a plate shape, and a through hole for the water tank to penetrate is provided at the center of the plate.

8. The vehicle fixing combined bracket according to claim 1, characterized in that: The controller mounting frame (304) is mounted on the controller connecting plate (3019); the controller mounting frame (304) is an irregular plate with a U-shaped protrusion at the center, and a through hole is arranged on the U-shaped protrusion.

9. The vehicle fixing combined bracket according to claim 2, characterized in that: The receiver mounting frame (303) is mounted on the lower cross beam (3020), and the receiver mounting frame (303) is configured as a rectangular parallelepiped structure formed by welding an L-shaped bent plate and a vertical plate, and the thickness of the accommodating space formed by the L-shaped bent plate and the vertical plate is greater than the thickness of the upper mounted receiver (507).

10. A cab rear suspension bracket assembly, comprising a vehicle fixing combined bracket as claimed in any one of claims 1 to 9, characterized in that: The invention also includes a base fuse box (501), a battery management system BMS (502), a vehicle controller VCU (503), a power system expansion water tank (504), a chassis system expansion water tank (505), a top-mounted receiver (507) and a top-mounted controller (506) installed on the fixed combined bracket (300), wherein the base fuse box (501), the battery management system BMS (502) and the vehicle controller VCU (503) are installed on the same side of the fixed combined bracket (300), and the power system expansion water tank (504), the chassis system expansion water tank (505), the top-mounted receiver (507) and the top-mounted controller (506) are installed on the same side of the fixed combined bracket (300). (507) and the upper-mounted controller (506) are located on the other side of the fixed combined bracket (300), and the base fuse box (501), the vehicle controller VCU (503), the power system expansion water tank (504), and the chassis system expansion water tank (505) are all located on the upper layer, and the battery management system BMS (502), the upper-mounted receiver (507) and the upper-mounted controller (506) are all located on the lower layer, and the pipelines of the base fuse box (501), the vehicle controller VCU (503), and the power system expansion water tank (504) are fixed to the pipeline mounting frames (3011) on both sides by clamps.

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