An air compressor mounting bracket, an air compressor side-hanging mounting structure and a vehicle

Abstract

This utility model belongs to the field of vehicle vibration suppression, specifically providing an air compressor mounting bracket, an air compressor side-mounted mounting structure, and a vehicle. The mounting bracket includes a sunken tray and two parallel, spaced-apart fixed beams. The fixed beams have mounting surfaces for fixed installation with a side-mounted bracket. The sunken tray has a recessed groove for mounting the air compressor. The bottom of the groove is located between the two fixed beams and is lower than the mounting surface. A primary vibration damping structure is provided at the bottom of the groove to support the air compressor. Supporting edges are provided along the outer edges of the two sidewalls of the recessed groove. A secondary vibration damping structure is provided on the fixed beams. The sunken tray is connected to the secondary vibration damping structures on the two fixed beams via the two supporting edges. The mounting structure and vehicle include the aforementioned mounting bracket. This utility model, through its dual design of two-stage vibration damping and lowering the air compressor's center of gravity, can significantly reduce the impact of air compressor vibration on the vehicle's interior passenger space, improving the vehicle's NVH performance.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle vibration suppression, and specifically relates to an air compressor mounting bracket, an air compressor side-mounted mounting structure, and a vehicle. Background Technology

[0002] Electric air compressors are generally used as the air source for new energy commercial vehicles. Currently, the air compressors of semi-monocoque commercial vehicles are generally side-mounted and fixed to the side of the chassis using a cantilever bracket structure made of profiles / channel steel, etc. For details of the bracket, please refer to the utility model patent with authorization announcement number CN210760980U.

[0003] In pure electric commercial vehicles, the air compressor is the only source of noise. When the air compressor is running, the noise inside the vehicle can easily reach more than 70 dBA, and cause vibration of the floor, seats and armrests. The NVH performance inside the vehicle is very poor, which affects the ride comfort.

[0004] To improve NVH performance, a common practice is to install a vibration-damping rubber pad between the air compressor and the mounting bracket. For example... Figure 1 As shown, a conventional air compressor mounting bracket includes a channel steel 1 and a tray 3. The air compressor 100 can be fixed on the tray 3, and the channel steel 1 can be fixed on the bracket. To achieve vibration reduction, a bowl-shaped vibration damping block is provided between the tray 3 and the channel steel 1. However, in practice, vehicles using this method to mount air compressors still experience relatively strong vibrations and noise during operation, and there is still room for further improvement in NVH performance. Utility Model Content

[0005] The purpose of this invention is to provide an air compressor mounting bracket to solve the technical problem of air compressor vibration affecting vehicle NVH performance in the prior art. Another purpose of this invention is to provide a side-mounted air compressor mounting structure to solve the same technical problem. Furthermore, this invention also aims to provide a vehicle employing the aforementioned side-mounted air compressor mounting structure.

[0006] To achieve the above objectives, the technical solution for the air compressor mounting bracket provided by this utility model is as follows:

[0007] An air compressor mounting bracket includes a sunken tray and two parallel, spaced-apart fixed beams. The fixed beams have mounting surfaces for fixed installation with side brackets. The sunken tray has a recessed groove for mounting the air compressor. The bottom surface of the recessed groove is located between the two fixed beams and is lower than the mounting surface. A primary vibration damping structure is provided at the bottom of the recessed groove to support the air compressor. Supporting edges are provided along the outer edges of the two side walls of the recessed groove of the sunken tray. A secondary vibration damping structure is provided on the fixed beams. The sunken tray is connected to the secondary vibration damping structures on the two fixed beams through the two supporting edges.

[0008] As a further improvement, the top surface of the fixed beam forms the mounting surface, and the bottom surface of the groove is lower than the bottom surface of the fixed beam.

[0009] As a further improvement, a support plate is installed at the top of the primary vibration damping structure, and the support plate is provided with mounting points for installing the air compressor.

[0010] As a further improvement, the primary vibration damping structure includes multiple columnar vibration damping blocks, each of which is fixed to the sunken tray by bolts.

[0011] As a further improvement, bolts pass through the sunken tray and the columnar damper block and are connected with nuts to secure the columnar damper block to the sunken tray.

[0012] As a further improvement, the top of each columnar vibration damper is connected to the same support plate. The support plate has mounting points for installing the air compressor, and bolts pass through the sunken tray, columnar vibration damper, and support plate and are connected with nuts to fix the support plate and columnar vibration damper together.

[0013] As a further improvement, the secondary vibration damping structure includes two or more bowl-shaped vibration damping blocks set on each fixed beam, and the bowl-shaped vibration damping blocks are connected to the fixed beam by bolts.

[0014] As a further improvement, each fixed beam is provided with two bowl-shaped vibration damping blocks arranged at intervals along the length of the fixed beam. Among the four bowl-shaped vibration damping blocks on the two fixed beams, two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by bolts, and the other two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by lifting lugs. The lower end of the lifting lug is provided with external threads, and the external threaded section of the lifting lug passes through the support side and connects to the bowl-shaped vibration damping block.

[0015] As a further improvement, the support edge of the sunken tray is integrally bent into the groove sidewall of the lower recess.

[0016] This utility model is a pioneering invention, and its beneficial effects are as follows: The mounting bracket provided by this utility model has a dual collaborative design of two-stage vibration reduction and lowering the center of gravity of the air compressor. Specifically, by increasing the degree of sinking of the lower groove of the sinking tray, the bottom surface of the lower groove is lower than the mounting surface of the fixed beam connected to the side bracket. This makes it possible for the bottom of the air compressor to be lower than the cantilever of the side bracket (similar to the sinking rocker structure), thereby achieving the effect of lowering the center of gravity of the air compressor.

[0017] Meanwhile, after the air compressor is installed, there are two levels of vibration damping structures between the air compressor and the sunken tray, and between the sunken tray and the fixed beam. The two levels of vibration damping structures can achieve the gradual attenuation of vibration transmission.

[0018] As the above analysis shows, this utility model, through its dual design of two-stage vibration reduction and lowering the air compressor's center of gravity, can significantly reduce the impact of air compressor vibration on the vehicle's interior passenger space, thereby improving the vehicle's NVH performance. CAE simulation calculations demonstrate that using the mounting bracket of this utility model can greatly alleviate noise and vibration within the vehicle. Furthermore, real-vehicle testing has reduced noticeable foot tingling from vibration inside the vehicle to a level that is imperceptible.

[0019] To achieve the above objectives, the technical solution of the side-mounted air compressor installation structure provided by this utility model is as follows:

[0020] A side-mounted air compressor mounting structure includes a side-mounted bracket with a mounting support fixed on it. The mounting support includes a recessed tray and two parallel, spaced-apart fixed beams. The fixed beams have mounting surfaces that are fixedly mounted to the side-mounted bracket. The recessed tray has a recessed groove for mounting the air compressor. The bottom of the recessed groove is located between the two fixed beams and is lower than the mounting surface. A primary vibration damping structure is provided at the bottom of the recessed groove to support the air compressor. Supporting edges are provided along the outer edges of the two sidewalls of the recessed groove. A secondary vibration damping structure is provided on the fixed beams. The recessed tray is connected to the secondary vibration damping structures on the two fixed beams through the two supporting edges.

[0021] As a further improvement, the top surface of the fixed beam forms the mounting surface, and the bottom surface of the groove is lower than the bottom surface of the fixed beam.

[0022] As a further improvement, a support plate is installed at the top of the primary vibration damping structure, and the support plate is provided with mounting points for installing the air compressor.

[0023] As a further improvement, the primary vibration damping structure includes multiple columnar vibration damping blocks, each of which is fixed to the sunken tray by bolts.

[0024] As a further improvement, bolts pass through the sunken tray and the columnar damper block and are connected with nuts to secure the columnar damper block to the sunken tray.

[0025] As a further improvement, the top of each columnar vibration damper is connected to the same support plate. The support plate has mounting points for installing the air compressor, and bolts pass through the sunken tray, columnar vibration damper, and support plate and are connected with nuts to fix the support plate and columnar vibration damper together.

[0026] As a further improvement, the secondary vibration damping structure includes two or more bowl-shaped vibration damping blocks set on each fixed beam, and the bowl-shaped vibration damping blocks are connected to the fixed beam by bolts.

[0027] As a further improvement, each fixed beam is provided with two bowl-shaped vibration damping blocks arranged at intervals along the length of the fixed beam. Among the four bowl-shaped vibration damping blocks on the two fixed beams, two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by bolts, and the other two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by lifting lugs. The lower end of the lifting lug is provided with external threads, and the external threaded section of the lifting lug passes through the support side and connects to the bowl-shaped vibration damping block.

[0028] As a further improvement, the support edge of the sunken tray is integrally bent into the groove sidewall of the lower recess.

[0029] This utility model is an improved invention, and its beneficial effects are as follows: The mounting bracket used in the side-mounted mounting structure provided by this utility model has a dual collaborative design of two-stage vibration reduction and lowering the center of gravity of the air compressor. Specifically, by increasing the degree of sinking of the lower groove of the sinking tray, the bottom surface of the lower groove is lower than the mounting surface of the fixed beam connected to the side-mounted bracket. This makes it possible for the bottom of the air compressor to be lower than the cantilever of the side-mounted bracket (similar to the sinking rocker structure), thereby achieving the effect of lowering the center of gravity of the air compressor.

[0030] Meanwhile, after the air compressor is installed, there are two levels of vibration damping structures between the air compressor and the sunken tray, and between the sunken tray and the fixed beam. The two levels of vibration damping structures can achieve the gradual attenuation of vibration transmission.

[0031] As the above analysis shows, this utility model, through its dual design of two-stage vibration reduction and lowering the air compressor's center of gravity, can significantly reduce the impact of air compressor vibration on the vehicle's interior passenger space, thereby improving the vehicle's NVH performance. CAE simulation calculations demonstrate that using the mounting bracket of this utility model can greatly alleviate noise and vibration within the vehicle. Furthermore, real-vehicle testing has reduced noticeable foot tingling from vibration inside the vehicle to a level that is imperceptible.

[0032] To achieve the above objectives, the technical solution for the vehicle provided by this utility model is as follows:

[0033] A vehicle includes a frame, on which an air compressor is mounted via a side-mounted structure. The side-mounted structure includes a side-mount bracket, on which a mounting bracket is fixed. The mounting bracket includes a recessed tray and two parallel, spaced-apart fixed beams. The fixed beams have mounting surfaces for fixed installation with the side-mount bracket. The recessed tray has a recess for mounting the air compressor. The bottom of the recess is located between the two fixed beams and is lower than the mounting surface. A primary vibration damping structure is provided at the bottom of the recess to support the air compressor. Supporting edges are provided along the outer edges of the two sidewalls of the recessed tray. A secondary vibration damping structure is provided on the fixed beams. The recessed tray is connected to the secondary vibration damping structures on the two fixed beams via the two supporting edges.

[0034] As a further improvement, the top surface of the fixed beam forms the mounting surface, and the bottom surface of the groove is lower than the bottom surface of the fixed beam.

[0035] As a further improvement, a support plate is installed at the top of the primary vibration damping structure, and the support plate is provided with mounting points for installing the air compressor.

[0036] As a further improvement, the primary vibration damping structure includes multiple columnar vibration damping blocks, each of which is fixed to the sunken tray by bolts.

[0037] As a further improvement, bolts pass through the sunken tray and the columnar damper block and are connected with nuts to secure the columnar damper block to the sunken tray.

[0038] As a further improvement, the top of each columnar vibration damper is connected to the same support plate. The support plate has mounting points for installing the air compressor, and bolts pass through the sunken tray, columnar vibration damper, and support plate and are connected with nuts to fix the support plate and columnar vibration damper together.

[0039] As a further improvement, the secondary vibration damping structure includes two or more bowl-shaped vibration damping blocks set on each fixed beam, and the bowl-shaped vibration damping blocks are connected to the fixed beam by bolts.

[0040] As a further improvement, each fixed beam is provided with two bowl-shaped vibration damping blocks arranged at intervals along the length of the fixed beam. Among the four bowl-shaped vibration damping blocks on the two fixed beams, two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by bolts, and the other two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by lifting lugs. The lower end of the lifting lug is provided with external threads, and the external threaded section of the lifting lug passes through the support side and connects to the bowl-shaped vibration damping block.

[0041] As a further improvement, the support edge of the sunken tray is integrally bent into the groove sidewall of the lower recess.

[0042] This utility model is an improved invention, and its beneficial effects are as follows: The vehicle provided by this utility model adopts a brand-new mounting bracket to install the air compressor. The mounting bracket has a dual collaborative design of two-stage vibration reduction and lowering the center of gravity of the air compressor. Specifically, by increasing the degree of sinking of the lower groove of the sinking tray, the bottom surface of the lower groove is lower than the mounting surface of the fixed beam connected to the side bracket. This makes it possible for the bottom of the air compressor to be lower than the cantilever of the side bracket (similar to the sinking rocker structure), thereby achieving the effect of lowering the center of gravity of the air compressor.

[0043] Meanwhile, after the air compressor is installed, there are two levels of vibration damping structures between the air compressor and the sunken tray, and between the sunken tray and the fixed beam. The two levels of vibration damping structures can achieve the gradual attenuation of vibration transmission.

[0044] As the above analysis shows, this utility model, through its dual design of two-stage vibration reduction and lowering the air compressor's center of gravity, can significantly reduce the impact of air compressor vibration on the vehicle's interior passenger space, thereby improving the vehicle's NVH performance. CAE simulation calculations demonstrate that using the mounting bracket of this utility model can greatly alleviate noise and vibration within the vehicle. Furthermore, real-vehicle testing has reduced noticeable foot tingling from vibration inside the vehicle to a level that is imperceptible. Attached Figure Description

[0045] Figure 1 A schematic diagram of an existing air compressor mounting bracket (with an air compressor mounted on it).

[0046] Figure 2 This is a front view of an embodiment of the air compressor mounting bracket in this utility model (with an air compressor mounted on it).

[0047] Figure 3 An isometric view of an embodiment of the air compressor mounting bracket in this utility model (with an air compressor installed and a hidden channel steel).

[0048] Figure 4 An isometric view of an embodiment of the air compressor mounting bracket in this utility model (with the channel steel hidden and the air compressor not installed).

[0049] Figure 5 This is a diagram illustrating the usage state of the air compressor mounting bracket in this utility model.

[0050] Explanation of reference numerals in the attached figures:

[0051] 100. Air compressor; 200. Side bracket; 300. Chassis; 1. Channel steel; 2. Bowl-shaped vibration damping block; 3. Pallet; 4. Sunken pallet; 5. Column-shaped vibration damping block; 6. Support plate; 7. Lifting lug; 401. Lower groove; 402. Support edge. Detailed Implementation

[0052] For new energy commercial vehicles, especially pure electric commercial vehicles, air compressors are the primary source of vibration and noise. To improve the NVH performance of vehicles, the basic technical concept of this invention is to develop a novel mounting bracket for air compressors. This bracket features a dual-stage vibration damping structure and a sunken tray, which allows vibration transmission to be gradually attenuated and lowers the center of gravity of the air compressor. CAE simulation calculations and real-vehicle testing demonstrate that using the mounting bracket provided by this invention can significantly improve the NVH performance of vehicles.

[0053] Based on the above concept, the present invention will be further described in detail below with reference to the embodiments.

[0054] Specific embodiments of the air compressor mounting bracket provided by this utility model:

[0055] The air compressor mounting bracket (hereinafter referred to as the mounting bracket) provided in this embodiment is as follows: Figures 2-5 As shown, the mounting bracket includes a recessed tray 4, which is used to mount the air compressor 100. The recessed tray 4 refers to a tray 3 with a recessed groove 401 in the middle, where the air compressor 100 is mounted. The mounting bracket also includes two fixed beams, which are parallel and spaced apart. The mounting bracket can be connected to the side bracket 200 via the fixed beams. Figure 4 As shown, the fixed beam has a mounting surface for fixed installation with the side bracket 200. Specifically, the fixed beam can be the channel steel 1 shown in the figure; of course, the fixed beam can also be rectangular steel. The top surface of the channel steel 1 is used to fit and attach to the side bracket 200, forming the aforementioned mounting surface.

[0056] like Figure 5 As shown, the side mount 200 can be connected to the side of the frame 300, specifically by bolt connection. The side mount 200 has a cantilever extending away from the frame 300, and a fixing beam can be fixed to the cantilever.

[0057] The lower groove 401 is located between the two fixed beams, that is, the bottom surface of the lower groove 401 is located between the two fixed beams.

[0058] To lower the center of gravity of the air compressor 100, the recessed depth of the lower groove 401 is greater than that of the prior art. Most fundamentally, the bottom surface of the lower groove 401 should be lower than the mounting surface of the fixed beam (i.e., the top surface of the channel steel 1), thus making it possible to lower the center of gravity of the air compressor 100. Preferably, as... Figure 2 As shown, the bottom surface of the lower groove 401 is lower than the bottom surface of the fixed beam, which can further lower the center of gravity of the air compressor 100 while ensuring normal installation of the air compressor 100.

[0059] The mounting bracket is also equipped with a dual-stage vibration damping structure. Specifically, a primary vibration damping structure is provided at the bottom of the lower groove 401, and the sunken tray 4 supports the air compressor 100 through the primary vibration damping structure. Supporting edges 402 are provided on the outer edges of the side walls of the grooves on both sides of the sunken tray 4, and a secondary vibration damping structure is provided on the fixed beam. The sunken tray 4 is connected to the secondary vibration damping structures on the two fixed beams through the two supporting edges 402 respectively.

[0060] As described above, the dual-stage vibration reduction structure can achieve gradual attenuation during vibration transmission. The sunken support lowers the center of gravity of the air compressor, absorbing high-frequency vibrations through "elastic deformation to stress release," while simultaneously suppressing resonance using the high damping characteristics of its own material, thus achieving the effect of structural deformation vibration absorption.

[0061] Regarding the primary vibration reduction structure, in some preferred embodiments, such as Figures 2-5As shown, the primary vibration damping structure includes four columnar vibration damping blocks 5 (e.g., rubber blocks). Each columnar vibration damping block 5 works together to support the mounting frame. The figure shows the case with four columnar vibration damping blocks 5. In fact, if the support capacity can be met, there can be at least three columnar vibration damping blocks 5. If the space is sufficient, the number of columnar vibration damping blocks 5 can also be greater than four.

[0062] The columnar vibration damping block 5 can be made of natural rubber with a hardness of 45SHA and a single load-bearing capacity of 20kg. Its performance focuses on the reliability of vertical support and attenuates horizontal (X / Y axis) vibration through "shear deformation".

[0063] The columnar vibration damping block 5 is fixed to the sunken tray 4 by bolts. Specifically, as shown... Figure 2 and Figure 4 As shown, bolts pass through the sunken tray 4 and the columnar vibration damping block 5, specifically from top to bottom or from bottom to top. Nuts are attached to the bolts to secure the columnar vibration damping block 5 to the sunken tray 4. This through-type fixing method provides a superior fixing effect between the columnar vibration damping block 5 and the sunken tray 4.

[0064] Furthermore, to enhance the fixing effect of the columnar vibration damping blocks 5 on the air compressor 100, the top of each columnar vibration damping block 5 is connected to the same support plate 6. The support plate 6 serves as a disc-shaped support base for supporting the air compressor 100. Mounting points for installing the air compressor 100 are provided on the support plate 6. Specifically, bolts are fixed to the support plate 6 to connect the bottom of the air compressor 100 to the bolts on the support plate 6. The bolts connecting the columnar vibration damping blocks 5 and the recessed tray 4 pass through the recessed tray 4, the columnar vibration damping blocks 5, and the support plate 6, and are connected with nuts, thereby fixing the support plate 6 and the columnar vibration damping blocks 5 in a fixed connection.

[0065] It should be noted that in other embodiments, the support plate 6 may not be provided, and the bottom of the air compressor 100 may be directly fixed to the columnar vibration damping block 5.

[0066] The above is only an example of a preferred primary vibration damping structure. In other embodiments, the primary vibration damping structure may also take other forms, such as a strip-shaped vibration damping pad.

[0067] Regardless of the method used for the primary vibration damping structure, a support plate 6 can be connected to the top of the primary vibration damping structure, and the air compressor 100 can be installed on the support plate 6.

[0068] Regarding the secondary vibration reduction structure, in some preferred embodiments, such as Figures 2-4As shown, the secondary vibration damping structure includes two bowl-shaped vibration damping blocks 2 disposed on each fixed beam, and the bowl-shaped vibration damping blocks 2 have a hollow interior. The bowl-shaped vibration damping blocks 2 are connected to the fixed beams by bolts. It should be noted that in some embodiments, if space permits, the number of bowl-shaped vibration damping blocks 2 disposed on the fixed beams can be three or even more.

[0069] The bowl-shaped vibration damping block 2 can be made of natural rubber with a hardness of 45SHA and a single load-bearing capacity of 20kg. Its performance focuses on vibration isolation, attenuating vertical (Z-axis) vibration through "compression deformation to elastic recovery".

[0070] Even better, such as Figure 2 and Figure 4 As shown, of the four bowl-shaped vibration damping blocks 2 on the two fixed beams, two bowl-shaped vibration damping blocks 2 arranged diagonally are connected to the support edge 402 by bolts, and the other two bowl-shaped vibration damping blocks 2 arranged diagonally are connected to the support edge 402 by lifting lugs 7. The lower end of the lifting lugs 7 is provided with external threads, that is, the end with external threads is the external thread section. The external thread section of the lifting lugs 7 passes through the support edge 402 and is connected to the bowl-shaped vibration damping blocks 2.

[0071] Using the lifting lug 7 to connect the support edge 402 to the bowl-shaped vibration damping block 2 can achieve a normal and stable connection between the support edge 402 and the bowl-shaped vibration damping block 2, while directly forming a lifting point on the installation bracket, which facilitates subsequent lifting operations.

[0072] In some preferred embodiments, the support edge 402 of the sunken tray 4 is integrally bent into the groove sidewall of the lower groove 401. Compared with the separate installation method, the resulting sunken tray has better overall integrity, strength, and stability.

[0073] The mounting bracket provided in this embodiment has been simulated and tested in a real vehicle using CAE. The noise and vibration inside the vehicle can be greatly reduced, and the noticeable vibration and numbness in the feet inside the vehicle has been reduced to a level that is imperceptible.

[0074] Specific implementation of the side-mounted air compressor mounting structure provided by this utility model:

[0075] The side-mounted air compressor mounting structure includes a side-mount bracket, which can be consistent with existing technology and can be side-mounted onto a vehicle frame. An air compressor mounting bracket is mounted on the side-mount bracket. The structure of the air compressor mounting bracket is consistent with the implementation method of the mounting bracket described in the above-described air compressor mounting bracket implementation method, and will not be specifically described here.

[0076] Specific embodiments of the vehicle provided by this utility model:

[0077] The vehicle includes a frame 300. An air compressor is mounted on one side of the frame 300 via a side-mounted mounting structure. The side-mounted mounting structure includes a side bracket, which can be consistent with existing technology and can be side-mounted onto the frame. An air compressor mounting bracket is mounted on the side bracket. The structure of the air compressor mounting bracket is consistent with the implementation method of the mounting bracket described in the above-described embodiment, and will not be described in detail here.

[0078] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air compressor mounting bracket, characterized by, The device includes a sunken tray and two parallel, spaced-apart fixed beams. The fixed beams have mounting surfaces for fixed installation with side brackets. The sunken tray has a recessed groove for mounting an air compressor. The bottom of the recessed groove is located between the two fixed beams and is lower than the mounting surface. A primary vibration damping structure is provided at the bottom of the recessed groove to support the air compressor. Supporting edges are provided along the outer edges of the two side walls of the recessed groove of the sunken tray. A secondary vibration damping structure is provided on the fixed beams. The sunken tray is connected to the secondary vibration damping structures on the two fixed beams through the two supporting edges.

2. The air compressor mounting bracket of claim 1, wherein, The top surface of the fixed beam forms the mounting surface, and the bottom surface of the groove is lower than the bottom surface of the fixed beam.

3. The air compressor mounting bracket of claim 1 or 2, wherein, The top of the primary vibration damping structure is equipped with a support plate, which has mounting points for installing the air compressor.

4. The air compressor mounting bracket of claim 1, wherein, The primary vibration reduction structure includes multiple columnar vibration damping blocks, each of which is fixed to the sunken tray by bolts.

5. The air compressor mounting bracket of claim 4, wherein, Bolts pass through the sunken tray and the columnar damping block and are connected with nuts to fix the columnar damping block to the sunken tray.

6. The air compressor mounting bracket of claim 5, wherein, Each columnar vibration damper is connected to the same support plate at its top. The support plate has mounting points for installing the air compressor. Bolts pass through the recessed tray, columnar vibration damper, and support plate and are connected with nuts to fix the support plate and columnar vibration damper together.

7. The air compressor mounting bracket of any one of claims 1, 2, 4-6, wherein, The secondary vibration reduction structure includes two or more bowl-shaped vibration damping blocks installed on each fixed beam, and the bowl-shaped vibration damping blocks are connected to the fixed beam by bolts.

8. The air compressor mounting bracket of claim 7, wherein, Each fixed beam is provided with two bowl-shaped vibration damping blocks arranged at intervals along the length of the fixed beam. There are a total of four bowl-shaped vibration damping blocks on the two fixed beams. Two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by bolts. The other two bowl-shaped vibration damping blocks arranged diagonally are connected to the support side by lifting lugs. The lower end of the lifting lug is provided with external threads. The external thread section of the lifting lug passes through the support side and connects to the bowl-shaped vibration damping block.

9. The air compressor mounting bracket according to any one of claims 1, 2, 4-6, characterized in that, The supporting edge of the sunken tray is integrally bent and formed with the side wall of the groove in the lower recess.

10. An air compressor side mount structure comprising a side mount bracket to which a mounting bracket is fixed, characterized by, The mounting bracket is the air compressor mounting bracket as described in any one of claims 1-9.

11. A vehicle comprising a vehicle frame, a side portion of the vehicle frame having an air compressor mounted thereto by a side-hanging mounting structure, the side-hanging mounting structure comprising a side-hanging bracket, the side-hanging bracket having a mounting bracket fixed thereto, characterized in that, The mounting bracket is the air compressor mounting bracket as described in any one of claims 1-9.

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