New energy heavy truck air suspension system

Abstract

The utility model discloses a new energy heavy truck air suspension system which comprises support structures and a plurality of vibration reduction mechanisms, the vibration reduction mechanisms are arranged on the two sides of a truck frame in the width direction respectively, each vibration reduction mechanism is connected with an electric drive axle, and one support structure is arranged between every two adjacent vibration reduction mechanisms. The damping mechanism comprises air bag assemblies, a balance beam and an adjustable damping shock absorber assembly, the balance beam is arranged in the length direction of the frame, the middle of the balance beam is connected with the bottom of the electric drive axle, the two ends of the balance beam are connected with the bottoms of the air bag assemblies respectively, and the tops of the air bag assemblies are connected with the frame; the bottom end of the adjustable damping shock absorber assembly is connected with the balance beam, and the top end of the adjustable damping shock absorber assembly is connected with the frame. The technical effects are achieved as follows: the modular integrated design is adopted, the parts are integrated, the types of the parts are greatly reduced, the strength of the suspension parts is increased by applying high-strength composite materials, the weight of the system is reduced, meanwhile, the comfort is improved, and the requirements of different working conditions can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile suspension systems, and in particular to an air suspension system for a new energy heavy truck. Background Art

[0002] In an energy-saving and environmentally friendly environment, new energy heavy-duty trucks are being used more and more widely. In order to meet the requirements of driving range, the battery power of new energy heavy-duty trucks continues to increase, resulting in an increase in chassis weight. In order to ensure the load requirements of the entire vehicle, the suspension system needs to be further reduced in weight.

[0003] At present, the mainstream new energy heavy-duty trucks in the market mostly use power transmission arrangements such as motors, gearboxes, and drive shafts. With the maturity of electric drive axle technology, its application in the field of heavy-duty trucks is becoming more and more extensive. Due to the changes in the structure and weight of the electric drive axle itself, the unsprung mass increases, which affects the smoothness. In addition, the complex road conditions in China, heavy-duty trucks travel on highways, national highways, provincial highways, and lower-level county roads and even unpaved roads. The air suspension system with traditional vibration reduction can no longer meet the needs of heavy-duty trucks under complex and changeable working conditions. The use of an air suspension system with adjustable damping function to ensure that the vehicle is always in the best vibration reduction state and improve vehicle comfort has become a market demand. Utility Model Content

[0004] To this end, the present invention provides an air suspension system for a new energy heavy truck to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] According to a first aspect of the present invention, an air suspension system for a new energy heavy truck includes a support structure and a plurality of vibration damping mechanisms, wherein the plurality of vibration damping mechanisms are respectively arranged on both sides of the width direction of the frame, each vibration damping mechanism is connected to an electric drive axle, and a support structure is provided between two adjacent vibration damping mechanisms;

[0007] The vibration reduction mechanism includes an airbag assembly, a balancing beam, and an adjustable damping shock absorber assembly. The balancing beam is arranged along the length direction of the frame, the middle portion of the balancing beam is connected to the bottom of the electric drive axle, the two ends of the balancing beam are respectively connected to the bottom of one of the airbag assemblies, and the top of the airbag assembly is connected to the frame; the adjustable damping shock absorber assembly is arranged vertically, the bottom end of the adjustable damping shock absorber assembly is connected to the balancing beam, and the top end of the adjustable damping shock absorber assembly is connected to the frame;

[0008] The top end of the support structure is connected to the vehicle frame, and the bottom end of the support structure is hinged to the balancing beams of two adjacent vibration damping mechanisms respectively.

[0009] Furthermore, it also includes a limit block, which is installed on the vehicle frame, and one limit block is provided above each electric drive axle.

[0010] Furthermore, a vibration-damping pad is provided at the bottom of the limit block.

[0011] Furthermore, the support structure includes an intermediate support and a thrust rod assembly, the top end of the intermediate support is connected to the vehicle frame, and the bottom end of the intermediate support is provided with two thrust rod assemblies, which are arranged in sequence along the length direction of the vehicle frame, and one end of each thrust rod assembly is hinged to the bottom end of the intermediate support, and the end of the thrust rod assembly facing away from the intermediate support is hinged to the equalizing beam.

[0012] Furthermore, the thrust rod assembly includes a rod body and a rod head, and the rod heads are respectively provided at both ends of the rod body.

[0013] Furthermore, the vibration damping mechanism further includes an X-shaped arm assembly, one end of the X-shaped arm assembly is hinged to the vehicle frame, and the other end of the X-shaped arm assembly is hinged to the electric drive axle.

[0014] Furthermore, the vehicle frame includes a longitudinal beam and a cross beam, the number of the longitudinal beams is two, the two longitudinal beams are arranged parallel to each other, and the two ends of the cross beam are respectively connected to the two longitudinal beams.

[0015] Furthermore, one end of the X-shaped arm assembly facing away from the electric drive axle is hinged to the crossbeam.

[0016] Furthermore, the damping of the adjustable damping shock absorber assembly can be adjusted according to different working conditions.

[0017] The utility model has the following advantages: it adopts a modular integrated design, and through the integration of parts, the types of parts are greatly reduced; the use of high-strength composite materials increases the strength of suspension parts and reduces the weight of the system. While meeting the requirements of weight reduction, comfort is improved and the needs of different working conditions can be met; the use of a shock absorber with adjustable damping increases the damping coverage range of the shock absorber, and the shock absorber damping can be adjusted according to different road conditions, thereby meeting the requirements of vehicle driving smoothness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, provided they do not affect the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0020] Figure 1 A schematic diagram of the installation structure of an air suspension system, a vehicle frame and an axle for a new energy heavy-duty truck provided in some embodiments of the present invention.

[0021] Figure 2 This is a schematic structural diagram of an air suspension system for a new energy heavy-duty truck provided in some embodiments of the present invention.

[0022] Figure 3 A schematic structural diagram of an adjustable damping shock absorber assembly for an air suspension system of a new energy heavy-duty truck provided in some embodiments of the present utility model.

[0023] In the figure: 1. Airbag assembly, 2. Balance beam, 3. Electric drive axle, 4. Adjustable damping shock absorber assembly, 5. Thrust rod assembly, 6. Intermediate bracket, 7. Limit block, 8. X-arm assembly, 9. Crossbeam, 10. Frame, 11. Displacement sensor, 12. Controller, 13. Adjustable damping shock absorber. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figures 1 to 3 As shown, an air suspension system for a new energy heavy truck in an embodiment of the first aspect of the present invention includes a support structure and multiple vibration damping mechanisms, wherein the multiple vibration damping mechanisms are respectively arranged on both sides of the frame 10 in the width direction, and the vibration damping mechanisms on both sides of the frame 10 form a group of two, and each group of vibration damping mechanisms is symmetrically arranged along the central axis in the length direction of the frame, each vibration damping mechanism is connected to an electric drive axle 3, and a support structure is provided between two adjacent vibration damping mechanisms;

[0027] The vibration reduction mechanism includes an airbag assembly 1, a balancing beam 2 and an adjustable damping shock absorber assembly 4. The balancing beam 2 is arranged along the length direction of the frame 10, the middle part of the balancing beam 2 is connected to the bottom of the electric drive bridge 3, the two ends of the balancing beam 2 are respectively connected to the bottom of an airbag assembly 1, and the top of the airbag assembly 1 is connected to the frame 10; the adjustable damping shock absorber assembly 4 is arranged vertically, the bottom end of the adjustable damping shock absorber assembly 4 is connected to the balancing beam 2, and the top end of the adjustable damping shock absorber assembly 4 is connected to the frame 10; the airbag assembly 1 is used to provide load bearing, and the adjustable damping shock absorber assembly 4 is used to provide damping to ensure that the vehicle has good comfort. Specifically, the adjustable damping shock absorber assembly 4 adopts a shock absorber whose damping can be adjusted according to different working conditions, specifically, Figure 3 As shown, the adjustable damping shock absorber assembly 4 includes a displacement sensor 11, a controller 12 and an adjustable damping shock absorber 13. When the vehicle is driving, the vehicle operating parameters are input to the controller 12 via CAN (Controller Area Network) and cables. The suspension system motion response signal collected by the displacement sensor 11 is input to the controller 12. After pre-processing the collected signal, the controller 12 makes a judgment based on the set control logic and outputs a calibrated current to the adjustable damping shock absorber 13, so that the shock absorber obtains the required damping force value combination, thereby ensuring the system has the best vibration reduction effect. The airbag assembly base is made of non-metallic material PA66, and the airbag skin is made of natural rubber.

[0028] The top end of the support structure is connected to the vehicle frame 10 , and the bottom end of the support structure is hinged to the balancing beams 2 of two adjacent vibration damping mechanisms.

[0029] In this embodiment, it should be noted that a limit block 7 is also included. The limit block 7 is installed on the vehicle frame 10. A limit block 7 is provided above each electric drive axle 3. A vibration damping pad is provided at the bottom of the limit block 7. The limit block 7 is used to limit the upward displacement of the electric drive axle 3.

[0030] The technical effects achieved by this embodiment are as follows: a modular integrated design is adopted to significantly reduce the types of parts through the integration of parts; the strength of the suspension parts is increased and the weight of the system is reduced through the application of high-strength and new materials; while meeting the weight reduction requirement, a shock absorber with adjustable damping is adopted to increase the damping coverage of the shock absorber, and the shock absorber damping can be adjusted according to different road conditions to meet the requirements of vehicle driving smoothness.

[0031] Example 2

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides another new energy heavy truck air suspension system, the structure of which includes all the contents of embodiment 1, and only the different parts are described below.

[0033] In this embodiment, the bracket structure includes an intermediate bracket 6 and a thrust rod assembly 5. The top end of the intermediate bracket 6 is connected to the vehicle frame 10. Two thrust rod assemblies 5 are provided at the bottom end of the intermediate bracket 6. The two thrust rod assemblies 5 are arranged in sequence along the length direction of the vehicle frame 10. One end of each thrust rod assembly 5 is hinged to the bottom end of the intermediate bracket 6, and the end of the thrust rod assembly 5 facing away from the intermediate bracket 6 is hinged to the middle of the equalizing beam 2.

[0034] In this embodiment, it should be noted that the intermediate bracket 6 is made of QT800-5 ductile iron, and the thrust rod assembly 5 is made of 6082 aluminum alloy. The thrust rod assembly 5 includes a rod body and a rod head. Rod heads are respectively provided at both ends of the rod body. The rod heads at both ends of the rod body are respectively hinged to the balancing beam 2 and the intermediate bracket 6 through ball heads.

[0035] Furthermore, the vibration reduction mechanism also includes an X-arm assembly 8, one end of the X-arm assembly 8 is hinged to the frame 10, and the other end of the X-arm assembly 8 is hinged to the top of the electric drive bridge 3. The X-arm assembly is made of the new material QT1050-7.

[0036] Furthermore, the vehicle frame 10 includes two longitudinal beams and a cross beam 9. There are two longitudinal beams, which are arranged parallel to each other. The cross beam 9 is arranged in a direction perpendicular to the longitudinal beams. The two ends of the cross beam 9 are respectively connected to the two longitudinal beams. The cross beam 9 is bolted or riveted between the longitudinal beams. The end of the X-arm assembly 8 facing away from the electric drive bridge 3 is hinged to the cross beam 9. The cross beam 9 is a cast cross beam. Specifically, the cross beam 9 is made of QT800-5 ductile iron. The two ends of the X-arm assembly 8 are respectively hinged to the cross beam 9 and the electric drive bridge 3 through ball joints.

[0037] The technical effects achieved by this embodiment are as follows: the thrust rod assembly 5 and the X-arm assembly 8 cooperate with each other to jointly limit the front-to-rear and left-to-right movement trajectories of the electric drive bridge 3, the upward movement displacement of the electric drive bridge 3 is limited by the limit block 7, and the downward movement displacement of the electric drive bridge 3 is limited by the adjustable damping shock absorber assembly 4, the airbag assembly 1 is used to provide load-bearing, and the adjustable damping shock absorber assembly 4 is used to provide adjustable damping according to different working conditions to ensure that the vehicle has good comfort; the airbag assembly 1, the X-arm assembly 8, the thrust rod assembly 5, the adjustable damping shock absorber assembly 4 and the crossbeam 9, and the intermediate bracket 6 are made of new materials, with significant lightweight effects, enhanced strength and rigidity, and while meeting the weight reduction, the comfort is improved to meet the needs of different working conditions.

[0038] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

[0039] The terms "upper", "lower", "left", "right", "middle", etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be considered as the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A new energy heavy truck air suspension system, characterized in that: It comprises a support structure and a plurality of vibration-damping mechanisms, wherein the plurality of vibration-damping mechanisms are respectively arranged on both sides of the width direction of the vehicle frame (10), each vibration-damping mechanism is connected to an electric drive bridge (3), and a support structure is provided between two adjacent vibration-damping mechanisms; The vibration reduction mechanism comprises an air bag assembly (1), a balancing beam (2) and an adjustable damping shock absorber assembly (4), wherein the balancing beam (2) is arranged along the length direction of the vehicle frame (10), the middle portion of the balancing beam (2) is connected to the bottom of the electric drive bridge (3), the two ends of the balancing beam (2) are respectively connected to the bottom of one of the air bag assemblies (1), and the top of the air bag assembly (1) is connected to the vehicle frame (10); the adjustable damping shock absorber assembly (4) is arranged vertically, the bottom end of the adjustable damping shock absorber assembly (4) is connected to the balancing beam (2), and the top end of the adjustable damping shock absorber assembly (4) is connected to the vehicle frame (10); The top end of the support structure is connected to the vehicle frame (10), and the bottom end of the support structure is hinged to the balancing beams (2) of two adjacent vibration damping mechanisms.

2. The new energy heavy truck air suspension system according to claim 1, characterized in that: It also includes a limit block (7), which is installed on the vehicle frame (10), and a limit block (7) is provided above each of the electric drive axles (3).

3. The new energy heavy truck air suspension system according to claim 2, characterized in that: A vibration damping pad is provided at the bottom of the limiting block (7).

4. The new energy heavy truck air suspension system according to claim 1, characterized in that: The support structure includes an intermediate support (6) and a thrust rod assembly (5), the top end of the intermediate support (6) is connected to the vehicle frame (10), and the bottom end of the intermediate support (6) is provided with two thrust rod assemblies (5), and the two thrust rod assemblies (5) are arranged in sequence along the length direction of the vehicle frame (10), and one end of each thrust rod assembly (5) is hinged to the bottom end of the intermediate support (6), and the end of the thrust rod assembly (5) away from the intermediate support (6) is hinged to the equalizing beam (2).

5. The new energy heavy truck air suspension system according to claim 4 is characterized in that: The thrust rod assembly (5) comprises a rod body and a rod head, and the rod heads are respectively provided at both ends of the rod body.

6. The new energy heavy truck air suspension system according to claim 4, characterized in that: The vibration damping mechanism further comprises an X-shaped arm assembly (8), one end of the X-shaped arm assembly (8) is hinged to the vehicle frame (10), and the other end of the X-shaped arm assembly (8) is hinged to the electric drive bridge (3).

7. The new energy heavy truck air suspension system according to claim 6, characterized in that: The vehicle frame (10) comprises a longitudinal beam and a cross beam (9), wherein the number of the longitudinal beams is two, the two longitudinal beams are arranged parallel to each other, and the two ends of the cross beam (9) are respectively connected to the two longitudinal beams.

8. The new energy heavy truck air suspension system according to claim 7, characterized in that: One end of the X-shaped arm assembly (8) facing away from the electric drive bridge (3) is hinged to the crossbeam (9).

9. The new energy heavy truck air suspension system according to claim 1, characterized in that: The adjustable damping shock absorber assembly (4) adopts a shock absorber whose damping can be adjusted according to different working conditions.

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