Full-floating cab suspension system of long-head electric heavy truck

Abstract

The utility model relates to the technical field of new energy automobiles, in particular to a long-head electric heavy truck full-floating cab suspension system which comprises a front suspension assembly, and the front suspension assembly comprises a front suspension damping assembly, a front suspension upper support, a front suspension swing arm assembly and a front suspension lower support. The upper limbs of the front overhang upper support are connected with the front overhang damping assembly, and the lower limbs of the front overhang upper support are connected with the front overhang swing arm assembly. The front suspension damping assembly comprises a front suspension airbag damper and a damper support, the lower end of the front suspension airbag damper is used for being connected with a whole vehicle chassis, and the upper end of the front suspension airbag damper is connected with the damper support. The shock absorber bracket is connected with the front overhang upper support upper limb; the front overhang swing arm assembly comprises a front overhang swing arm and a front overhang swing arm support, one end of the front overhang swing arm is connected with the front overhang upper support lower limb, and the other end of the front overhang swing arm is connected with the front overhang swing arm support. And the front overhang swing arm bracket is connected with the front overhang lower support. The problem that an electric heavy truck is poor in comfort can be solved, meanwhile, the function of a cab suspension system is simplified, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a full-floating cab suspension system for a long-nose electric heavy truck. Background Technology

[0002] Currently, the technological maturity of electric heavy-duty trucks in my country is continuously improving, policy support is becoming more comprehensive, and market penetration is increasing year by year. New energy electric heavy-duty trucks will become an important development direction. However, some customers still lack confidence in the range of electric heavy-duty trucks. Some existing electric heavy-duty trucks have optimized the cab design, lowered the cab height, and made a long-nose cab similar to the front of a high-speed train to reduce the drag coefficient during vehicle operation and improve the range.

[0003] The cab suspension system is a device that supports the cab and isolates vibrations. With the reduction in the height of long-nose electric heavy-duty truck cabs, the vertical space between the cab and chassis has decreased, making it difficult to install a fully floating cab suspension system. Furthermore, due to the cab's structural design, the gaps between exterior trim components are small. To prevent significant cab tilting during cornering and interference with exterior trim components, existing long-nose electric heavy-duty trucks use a semi-floating structure. The front suspension uses a non-floating structure with individual rubber bushings, while the rear suspension uses a floating structure with shock absorbers. This ensures minimal cab tilt and avoids interference with exterior trim components. However, the semi-floating suspension structure results in poor comfort and a less than ideal driving experience. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a fully floating cab suspension system for long-nose electric heavy trucks to solve the above-mentioned problem of poor comfort, improve the driving experience, and at the same time simplify the functions of the cab suspension system by eliminating the tilting and locking functions to reduce costs.

[0005] The technical solution of this utility model is: a full-floating cab suspension system for a long-nose electric heavy truck, comprising:

[0006] A front suspension assembly, the front suspension assembly including a front suspension damping component, a front suspension upper support, a front suspension control arm assembly, and a front suspension lower support;

[0007] The front suspension upper support is a double-limb support. One end of the support is used to connect to the cab, and the other end extends upward and downward respectively. The upwardly extended part is the upper limb, which is connected to the front suspension shock absorber assembly; the downwardly extended part is the lower limb, which is connected to the front suspension swing arm assembly.

[0008] The front suspension damping assembly includes a front suspension airbag shock absorber and a shock absorber bracket. The lower end of the front suspension airbag shock absorber is used to connect to the vehicle chassis, and the upper end is connected to the shock absorber bracket. The shock absorber bracket is connected to the upper limb of the front suspension upper support.

[0009] The front suspension control arm assembly includes a front suspension control arm and a front suspension control arm bracket. One end of the front suspension control arm is connected to the lower limb of the upper front suspension support, and the other end is connected to the front suspension control arm bracket. The front suspension control arm bracket is connected to the lower front suspension support.

[0010] The front suspension lower support is used to connect the entire vehicle chassis;

[0011] The vertical length of the front suspension upper support is less than the vertical length of the front suspension damping assembly.

[0012] According to the present invention, a full-floating cab suspension system for a long-nose electric heavy truck is provided, wherein the upper limb of the front suspension upper support is provided with a shock-absorbing connecting part, and the lower limb is provided with a cantilever connecting part. The shock-absorbing connecting part is provided with a first connecting hole, the opening direction of which is the front-rear direction of the vehicle; the cantilever connecting part is provided with a second connecting hole, the opening direction of which is the front-rear direction of the vehicle.

[0013] According to the present invention, a long-nose electric heavy truck full-floating cab suspension system is provided, wherein the shock absorber bracket includes a connecting surface for connecting the upper support of the front suspension, the connecting surface is in contact with the upper limb of the upper support of the front suspension, and a third connecting hole is provided on the connecting surface, the opening direction of which is the front-rear direction of the vehicle.

[0014] The long-nose electric heavy truck full-floating cab suspension system provided by this utility model also includes a stabilizer bar, which is a hollow tubular structure with its two ends connected to the front suspension arm assembly.

[0015] According to the present invention, a full-floating cab suspension system for a long-nose electric heavy-duty truck is provided, wherein the front suspension arm is provided with a first opening, a second opening and a third opening; the first opening is provided with a front bushing of the front suspension arm, which is connected to the lower limb of the upper support of the front suspension; the second opening is an irregular hole, which is connected to the stabilizer bar through a plug; and the third opening is provided with a rear bushing of the front suspension arm, which is connected to the lower support of the front suspension.

[0016] According to the present invention, a full-floating cab suspension system for a long-nose electric heavy-duty truck is provided, wherein the front bushing of the front suspension arm is a flat shaft inner core structure, and its opening direction is the front-rear direction of the vehicle.

[0017] According to the present invention, a long-nose electric heavy-duty truck full-floating cab suspension system is provided. The front suspension assembly further includes a front suspension height adjustment assembly, which includes a front suspension height adjustment valve and a front suspension height adjustment rod. The front suspension height adjustment valve is fixedly connected to the front suspension lower support. One end of the front suspension height adjustment rod is connected to the front suspension height adjustment valve, and the other end is connected to the front suspension swing arm.

[0018] The long-nose electric heavy-duty truck full-floating cab suspension system provided by this utility model also includes:

[0019] The rear suspension assembly includes a rear suspension airbag shock absorber, a rear suspension lower support, a rear suspension control arm, and a rear suspension upper support.

[0020] The lower end of the rear suspension airbag shock absorber is connected to the rear suspension lower support, and the upper end is connected to the rear suspension swing arm;

[0021] The upper end of the lower rear suspension support is connected to the rear suspension control arm, and the lower end of the lower rear suspension support is used to connect to the vehicle chassis.

[0022] One end of the rear suspension swing arm is connected to the upper rear suspension support and the rear suspension airbag shock absorber, and the other end is connected to the upper end of the lower rear suspension support.

[0023] The rear suspension upper support is used to connect to the driver's cab.

[0024] According to the present invention, a full-floating cab suspension system for a long-nose electric heavy-duty truck is provided, wherein one end of the rear suspension arm is provided with a connecting hole and an outer bushing of the rear suspension arm, and the other end is provided with an inner bushing of the rear suspension arm; the connecting hole is connected to the rear suspension airbag shock absorber, the outer bushing of the rear suspension arm is connected to the upper support of the rear suspension, and the inner bushing of the rear suspension arm is connected to the upper end of the lower support of the rear suspension.

[0025] According to the present invention, a long-nose electric heavy-duty truck fully floating cab suspension system is provided. The rear suspension assembly further includes a rear suspension height adjustment assembly, which includes a rear suspension height adjustment valve and a rear suspension height adjustment rod. The rear suspension height adjustment valve is fixedly connected to the rear suspension lower support. One end of the rear suspension height adjustment rod is connected to the rear suspension height adjustment valve, and the other end is connected to the rear suspension swing arm.

[0026] The advantages of this application are:

[0027] 1. Compared with the existing traditional fuel vehicle suspension system, this utility model eliminates the cab tilting function, simplifies the structure of the full-floating cab suspension system, saves costs, and improves the comfort of the cab.

[0028] 2. The opening direction of the connection surface of the shock absorber bracket and the upper limb of the front suspension support of this utility model is the front-rear direction of the whole vehicle, which avoids the problem that the bolts cannot be tightened and fixed from the left and right directions of the whole vehicle due to the small gap between the cab and the surrounding exterior parts.

[0029] 3. The stabilizer bar of this utility model is connected to the front suspension control arm assembly at both ends. This structural design can provide greater roll stiffness and avoid the problem of interference between the cab and the exterior parts caused by large roll during vehicle operation.

[0030] 4. The second opening of the front suspension arm of this utility model is an irregular hole, and it is riveted to the stabilizer bar by a plug, which compresses and expands the two ends of the stabilizer bar into an irregular structure. Compared with the traditional welding method, this connection method is more robust and reliable.

[0031] 5. The front bushing of the front suspension control arm of this utility model has a flat shaft inner core structure, and its opening direction is the front-rear direction of the whole vehicle. This makes it convenient for the bolts connecting the front suspension control arm and the front suspension upper support to be arranged along the front-rear direction of the whole vehicle, which facilitates the installation and disassembly of the cab.

[0032] 6. Unlike the traditional vertical arrangement, the front suspension shock absorber and the front suspension swing arm assembly of this utility model are arranged in a cross manner in the vertical direction, which effectively reduces the height of the front suspension assembly and solves the problem that long-nose electric heavy trucks cannot be equipped with a fully floating cab due to insufficient vertical height.

[0033] 7. The rear suspension assembly of this utility model eliminates the hydraulic lock assembly, and the simplified structure of the fully floating cab suspension system saves costs.

[0034] 8. This utility model uses the rear suspension swing arm outer bushing to replace the hydraulic lock hinge point, ensuring normal mechanism movement during the up and down floating process of the rear suspension assembly. At the same time, the swing arm bushing is integrated in the middle of the rear suspension swing arm assembly, which greatly reduces the overall vehicle height. During vehicle assembly, only the bolts at this point need to be tightened to connect the cab to the chassis. During after-sales maintenance, only the bolts at this point need to be removed to separate the cab from the chassis, increasing the convenience of vehicle assembly and after-sales maintenance. Attached Figure Description

[0035] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the fully floating cab suspension system of this utility model;

[0037] Figure 2 This is a schematic diagram of the front suspension assembly of this utility model;

[0038] Figure 3 This is a schematic diagram showing the connection and structure of the stabilizer bar and the front suspension arm of this utility model;

[0039] Figure 4 This is a schematic cross-sectional view of the connection between the shock absorber bracket, the front suspension upper support, and the front suspension swing arm of this utility model.

[0040] Figure 5This is a schematic diagram of the rear suspension assembly of this utility model;

[0041] Figure 6 This is a schematic diagram of the structure of the rear suspension assembly with height adjustment assembly of this utility model.

[0042] Figure 7 This is a schematic diagram of the structure of the rear suspension arm of this utility model;

[0043] The components are: 1-Front suspension assembly, 11-Front suspension airbag shock absorber, 12-Shock absorber bracket, 13-Front suspension upper support, 14-Stabilizer bar, 15-Front suspension control arm assembly, 152-Front suspension control arm front bushing, 153-Front suspension control arm rear bushing, 154-Plug, 16-Front suspension control arm bracket, 17-Front suspension lower support, 18-Front suspension height adjustment assembly, 2-Rear suspension assembly, 21-Rear suspension air spring, 22-Rear suspension lower support, 23-Rear suspension control arm assembly, 232-Rear suspension control arm outer bushing, 233-Rear suspension control arm inner bushing, 24-Rear suspension upper support, 25-Rear suspension height adjustment assembly. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below, wherein 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 accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, it should be understood that the terms "longitudinal", "transverse", "axial", "radial", "circumferential", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] This utility model relates to a fully floating cab suspension system specifically for long-nose electric heavy trucks to solve the aforementioned problem of poor comfort and improve the driving experience. At the same time, it simplifies the functions of the cab suspension system by eliminating the tilting and locking functions, thereby reducing costs.

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0049] A fully floating cab suspension system for long-nose electric heavy-duty trucks, specifically, such as... Figure 1 , 2 As shown, it includes: two front suspension assemblies 1 and two rear suspension assemblies 2, wherein a stabilizer bar 14 connects the two front suspension assemblies 1; the front suspension assembly 1 specifically includes a front suspension damping assembly, a front suspension upper support 13, a front suspension control arm assembly, and a front suspension lower support 17; the front suspension upper support 13 is a dual-limb support, one end of which is connected to the cab, and the other end extends upward and downward respectively, the upwardly extended part being the upper limb, connected to the front suspension damping assembly; the downwardly extended part being the lower limb, connected to the front suspension control arm assembly; the front suspension damping assembly includes a front suspension airbag shock absorber 11. The lower end of the front suspension airbag shock absorber 11 is connected to the vehicle chassis, and the upper end is connected to the shock absorber bracket 12. The shock absorber bracket 12 is connected to the upper limb of the front suspension upper support 13. The front suspension control arm assembly includes a front suspension control arm 15 and a front suspension control arm bracket 16. One end of the front suspension control arm 15 is connected to the lower limb of the front suspension upper support 13, and the other end is connected to the front suspension control arm bracket 16. The front suspension control arm bracket 16 is connected to the front suspension lower support 17. The front suspension lower support 17 is used to connect to the vehicle chassis. The vertical length of the front suspension upper support 13 is less than the vertical length of the front suspension shock absorber assembly.

[0050] In actual operation, the front suspension damping assembly is used to reduce vibrations from the vehicle chassis and improve the comfort of the cab; the front suspension upper support 13 is used to connect the front suspension damping assembly and the front suspension control arm assembly, and the cab is installed at the support end of the front suspension upper support 13; the front suspension lower support 17 is connected to the vehicle chassis; the front suspension control arm assembly is used to connect the front suspension upper support 13 and the front suspension lower support 17. When the cab moves up and down relative to the vehicle chassis, the front suspension control arm assembly can rotate around the front suspension lower support 17, driving the front suspension upper support 13 and the cab to move. While ensuring a stable connection between the cab and the vehicle chassis, it also provides a certain amount of space for relative displacement between the two.

[0051] Specifically, in this application, the vertical length of the front suspension upper support 13 is less than the vertical length of the front suspension damping assembly, so that the front suspension damping assembly and the front suspension control arm assembly are arranged crosswise in the vertical direction. This is different from the structural feature of the prior art, which places the front suspension damper under the front suspension control arm in order to meet the flipping function of the front suspension assembly. The arrangement of this utility model can effectively reduce the height of the front suspension assembly 1 and solve the problem that electric heavy trucks cannot install a fully floating cab suspension system due to height limitations.

[0052] In some embodiments, the aforementioned front suspension upper support 13 and shock absorber bracket 12 have been optimized, specifically, as follows: Figure 2 , 4 As shown, in this embodiment, the upper limb of the front suspension upper support 13 is provided with a shock-absorbing connecting part, and the lower limb is provided with a cantilever connecting part. The shock-absorbing connecting part is provided with a first connecting hole, and the opening direction is the front-rear direction of the vehicle; the cantilever connecting part is provided with a second connecting hole, and the opening direction is the front-rear direction of the vehicle.

[0053] In this embodiment, the shock absorber bracket 12 includes two ears and a connecting surface. The two ears are perpendicularly connected to the two ends of the connecting surface, and the ears are used to connect the front suspension airbag shock absorber 11. The connecting surface is used to connect the front suspension upper support 13. A third connecting hole is provided on the connecting surface, and the opening direction of the hole is the front-rear direction of the whole vehicle.

[0054] In actual operation, thanks to the fact that the opening direction of the second and third connecting holes is the front-rear direction of the vehicle, the bolts connecting the two can be arranged along the front-rear direction of the vehicle, making it easier for technicians to separate the front suspension shock absorber assembly from the front suspension upper support 13. This avoids the problem that it is very difficult to remove the bolts installed along the left-right direction of the vehicle due to the small gap between the cab and the exterior parts of the electric heavy truck.

[0055] In some embodiments, the aforementioned front suspension assembly has been optimized, specifically, as follows: Figure 2 , 3 As shown, in this embodiment, the front suspension assembly also includes a stabilizer bar 14, which is a hollow tubular structure with both ends connected to the front suspension control arm assembly.

[0056] In actual operation, the stabilizer bar 14 can provide greater roll stiffness to avoid interference between the cab and exterior parts of the long-nose electric heavy truck during driving due to roll. The diameter of the stabilizer bar 14 can also be finely adjusted according to the weight change of the cab to adapt to the roll stiffness required by the entire vehicle cab, so as to meet the needs of different models.

[0057] In some embodiments, the aforementioned front suspension control arm 15 has been optimized, specifically, as follows: Figure 3As shown, in this embodiment, the front suspension arm 15 is provided with a first opening, a second opening and a third opening. The first opening is provided with a front suspension arm front bushing 152, which is connected to the lower limb of the front suspension upper support 13. The second opening is an irregular hole, which is connected to the stabilizer bar 14 through a plug 154. The third opening is provided with a front suspension arm rear bushing 153, which is connected to the front suspension lower support 17.

[0058] In actual installation, the two ends of the stabilizer bar 14 are first riveted to the second opening of the front suspension arm 15, and then the plug 154 is pressed into the hollow ends of the stabilizer bar 14, so that the two ends of the stabilizer bar 14 expand into the irregular hole shape of the second opening. Compared with the welding connection method used in the prior art, the riveting method used in this application is more robust and more durable.

[0059] In some embodiments, the aforementioned front suspension control arm bushing 152 has been optimized, specifically, as follows: Figure 3 , 4 As shown, in this embodiment, the front bushing 152 of the front suspension control arm is a flat shaft inner core structure, and its opening direction is the front-rear direction of the whole vehicle.

[0060] During actual installation, the opening direction of the front bushing 152 of the front suspension arm is in the front-rear direction of the vehicle. This makes it easier for the bolts to be connected to the front suspension upper support 13 and the front suspension arm 15 in the front-rear direction of the vehicle. This allows technicians to more easily separate the front suspension upper support 13 and the front suspension arm 15, avoiding the problem that it is very difficult to remove bolts installed along the left-right direction of the vehicle due to the small gap between the cab and the exterior parts of the electric heavy truck. At the same time, combined with the bolts connecting the shock absorber bracket 12 and the front suspension upper support 13 installed along the front-rear direction of the vehicle, technicians only need to open the front cover of the electric heavy truck to remove the bolts connecting the shock absorber bracket 12 and the front suspension upper support 13, and the bolts connecting the front suspension upper support 13 and the front suspension arm 15, respectively. This makes it convenient for technicians to disassemble and repair the entire fully floating cab suspension system.

[0061] In some embodiments, the aforementioned front suspension assembly 1 has been optimized, specifically, as follows: Figure 5 As shown, in this embodiment, the front suspension assembly 1 also includes a front suspension height adjustment assembly 18, which includes a front suspension height adjustment valve and a front suspension height adjustment rod. The front suspension height adjustment valve is fixedly connected to the front suspension lower support 17. One end of the front suspension height adjustment rod is connected to the front suspension height adjustment valve, and the other end is connected to the front suspension control arm 15.

[0062] In actual operation, adjusting the height of the front suspension height adjustment valve, after being transmitted through the front suspension height adjustment rod, can change the height of the front suspension control arm 15, thereby changing the height of the front suspension upper support 13 and the cab, providing the height adjustment function for the front suspension assembly 1.

[0063] In some embodiments, the rear suspension assembly 2 described above has been optimized, specifically, as follows: Figure 5 As shown, in this embodiment, the rear suspension assembly 2 includes a rear suspension airbag shock absorber 21, a rear suspension lower support 22, a rear suspension control arm 23, and a rear suspension upper support 24. The lower end of the rear suspension airbag shock absorber 21 is connected to the rear suspension lower support 22, and the upper end is connected to the rear suspension control arm 23. The upper end of the rear suspension lower support 22 is connected to the rear suspension control arm 23, and the lower end of the rear suspension lower support 22 is used to connect to the vehicle chassis. One end of the rear suspension control arm 23 is connected to the rear suspension upper support 24 and the rear suspension airbag shock absorber 21, and the other end is connected to the upper end of the rear suspension lower support 22. The rear suspension upper support 24 is used to connect to the driver's cab.

[0064] In actual installation, the rear suspension assembly 2 eliminates the hydraulic lock assembly structure, and the rear suspension control arm 23 replaces the hydraulic lock's connection function, simplifying the structure of the rear suspension assembly 2 and saving manufacturing costs for the full-floating cab suspension system; optional, such as Figure 6 As shown, the rear suspension assembly 2 can be equipped with the rear suspension height adjustment assembly 25 according to the actual situation. The rear suspension height adjustment assembly 25 is connected to the rear suspension lower support 22, and its height adjustment rod is connected to the rear suspension control arm 23. The rear suspension height adjustment assembly 25 can work with the front suspension height adjustment assembly 18 to adjust the height of the cab.

[0065] In some embodiments, the rear suspension control arm 23 described above has been optimized, specifically, as follows: Figure 7 As shown, in this embodiment, one end of the rear suspension arm 23 is provided with a connecting hole 231 and a rear suspension arm outer bushing 232, and the other end is provided with a rear suspension arm inner bushing 233; the connecting hole 231 is connected to the rear suspension airbag shock absorber 21, the rear suspension arm outer bushing 232 is connected to the rear suspension upper support 24; and the rear suspension arm inner bushing 233 is connected to the upper end of the rear suspension lower support 22.

[0066] In actual installation, the rear suspension arm outer bushing 232 can replace the hydraulic lock hinge point in the prior art, ensuring normal mechanical movement during the up-and-down floating process of the rear suspension assembly 2. At the same time, the rear suspension arm outer bushing 232 is integrated into the outer wall of the rear suspension arm 23, and the rear suspension arm inner bushing 233 is integrated into the middle of the rear suspension arm 23. Without increasing the height of the rear suspension arm 23, the connection function of each part of the rear suspension assembly 2 is realized, which greatly reduces the overall vehicle height compared with the prior art. During vehicle assembly, only the bolts of the rear suspension arm outer bushing 232 and the rear suspension arm inner bushing 233 need to be tightened to connect the cab to the chassis. During after-sales maintenance, only the bolts of the rear suspension arm outer bushing 232 and the rear suspension arm inner bushing 233 need to be removed to separate the cab from the chassis, increasing the convenience of vehicle assembly and after-sales maintenance.

[0067] In some embodiments, the rear suspension assembly 2 described above has been optimized, specifically, as follows: Figure 7As shown, in this embodiment, the rear suspension assembly 2 also includes a rear suspension height adjustment assembly 25, which includes a rear suspension height adjustment valve and a rear suspension height adjustment rod. The rear suspension height adjustment valve is fixedly connected to the rear suspension lower support 22. One end of the rear suspension height adjustment rod is connected to the rear suspension height adjustment valve, and the other end is connected to the rear suspension swing arm 23.

[0068] In actual operation, adjusting the height of the rear suspension height adjustment valve, after being transmitted through the rear suspension height adjustment rod, can change the height of the rear suspension control arm 23, thereby changing the height of the rear suspension upper support 24 and the cab, providing the height adjustment function for the rear suspension assembly 2; combined with the front suspension height adjustment assembly 18 and the rear suspension height adjustment assembly 25, the height of the electric heavy truck cab can be adjusted.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A full-floating cab suspension system for a long-nose electric heavy-duty truck, characterized in that, include: The front suspension assembly (1) includes a front suspension damping component, a front suspension upper support (13), a front suspension control arm component, and a front suspension lower support (17). The front suspension upper support (13) is a double-limb support. One end of the support is used to connect to the cab, and the other end extends upward and downward respectively. The upwardly extended part is the upper limb, which is connected to the front suspension shock absorber assembly; the downwardly extended part is the lower limb, which is connected to the front suspension swing arm assembly. The front suspension damping assembly includes a front suspension airbag shock absorber (11) and a shock absorber bracket (12). The lower end of the front suspension airbag shock absorber (11) is used to connect to the vehicle chassis, and the upper end is connected to the shock absorber bracket (12). The shock absorber bracket (12) is connected to the upper limb of the front suspension upper support (13). The front suspension arm assembly includes a front suspension arm (15) and a front suspension arm bracket (16). One end of the front suspension arm (15) is connected to the lower limb of the front upper support (13), and the other end is connected to the front suspension arm bracket (16). The front suspension arm bracket (16) is connected to the front lower support (17). The front suspension lower support (17) is used to connect the entire vehicle chassis; The vertical length of the upper front suspension support (13) is less than the vertical length of the front suspension damping assembly.

2. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 1, characterized in that, The upper limb of the front suspension upper support (13) is provided with a shock-absorbing connection part, and the lower limb is provided with a cantilever connection part. The shock-absorbing connection part is provided with a first connection hole, and the opening direction is the front-rear direction of the whole vehicle; the cantilever connection part is provided with a second connection hole, and the opening direction is the front-rear direction of the whole vehicle.

3. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 1, characterized in that, The shock absorber bracket (12) includes a connecting surface for connecting the front suspension upper support (13). The connecting surface is in contact with the upper limb of the front suspension upper support (13). A third connecting hole is provided on the connecting surface, and the opening direction is the front-rear direction of the whole vehicle.

4. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 1, characterized in that, It also includes a stabilizer bar (14), which is a hollow tubular structure with both ends connected to the front suspension arm assembly.

5. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 4, characterized in that, The front suspension arm (15) is provided with a first opening, a second opening and a third opening. The first opening is provided with a front suspension arm front bushing (152) and is connected to the lower limb of the front suspension upper support (13). The second opening is connected to the stabilizer bar (14) through a plug (154). The third opening is provided with a front suspension arm rear bushing (153) and is connected to the front suspension lower support (17).

6. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 5, characterized in that, The front bushing (152) of the front suspension arm is a flat shaft inner core structure, and its opening direction is the front-rear direction of the whole vehicle.

7. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 1, characterized in that, The front suspension assembly (1) further includes a front suspension height adjustment assembly (18), which includes a front suspension height adjustment valve and a front suspension height adjustment rod. The front suspension height adjustment valve is fixedly connected to the front suspension lower support (17). One end of the front suspension height adjustment rod is connected to the front suspension height adjustment valve, and the other end is connected to the front suspension swing arm (15).

8. A full-floating cab suspension system for a long-nose electric heavy-duty truck as described in any one of claims 1-7, characterized in that, Also includes: The rear suspension assembly (2) includes a rear suspension airbag shock absorber (21), a rear suspension lower support (22), a rear suspension swing arm (23), and a rear suspension upper support (24). The lower end of the rear suspension airbag shock absorber (21) is connected to the rear suspension lower support (22), and the upper end is connected to the rear suspension swing arm (23); The upper end of the lower rear suspension support (22) is connected to the rear suspension swing arm (23), and the lower end of the lower rear suspension support (22) is used to connect to the vehicle chassis. One end of the rear suspension swing arm (23) is connected to the upper rear suspension support (24) and the rear suspension airbag shock absorber (21), and the other end is connected to the upper end of the lower rear suspension support (22); The rear suspension upper support (24) is used to connect the cab.

9. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 8, characterized in that, One end of the rear suspension arm (23) is provided with a connecting hole (231) and a rear suspension arm outer bushing (232), and the other end is provided with a rear suspension arm inner bushing (233); the connecting hole (231) is connected to the rear suspension airbag shock absorber (21), the rear suspension arm outer bushing (232) is connected to the rear suspension upper support (24), and the rear suspension arm inner bushing (233) is connected to the upper end of the rear suspension lower support (22).

10. The long-nose electric heavy-duty truck full-floating cab suspension system as described in claim 8, characterized in that, The rear suspension assembly (2) further includes a rear suspension height adjustment assembly (25), which includes a rear suspension height adjustment valve and a rear suspension height adjustment rod. The rear suspension height adjustment valve is fixedly connected to the rear suspension lower support (22). One end of the rear suspension height adjustment rod is connected to the rear suspension height adjustment valve, and the other end is connected to the rear suspension swing arm (23).

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