Suspension structure of cross-country electric vehicle

Abstract

The utility model discloses a cross-country electric vehicle suspension structure which comprises a bearing element, and a vibration reduction element and three secondary vibration isolation elements are connected in the bearing element in an interference fit mode. The vibration isolation effect of the suspension system is further improved through the three secondary vibration isolation bushings, the three secondary vibration isolation bushings are arranged on the two sides of the vibration reduction element respectively, and the axial direction of one vibration isolation bushing is perpendicular to the axial direction of the other two vibration isolation bushings. The stress states of the left suspension and the right suspension are improved; meanwhile, the modality and the rigidity of the suspension bracket are improved; by reasonably designing the structure of the bearing element, the arrangement of the electric drive assembly in the frame can meet the new energy pure electricity arrangement principle, so that the projection of the center of a triangle formed by the mass center of the electric drive assembly and the elastic center point of the suspension in the Z direction of the whole vehicle basically coincides, and the stress of each suspension is more uniform; the limiting capacity of the suspension system is improved, and meanwhile the robustness of the suspension system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy electric vehicles, in particular to an off-road electric vehicle suspension structure. Background Art

[0002] At present, the proportion of electric vehicles in passenger cars is increasing. Due to the advantages of electric vehicles, off-road vehicles are gradually equipped with electric drive systems. Since some off-road vehicles use a non-load-bearing body, the chassis, powertrain and other components are all installed on the frame, and the integration is relatively high. The left and right suspension mounting points of the motor carried in the present invention are both single-point connection structures, and the left and right suspension mounting points of the motor correspond to a hard point on the chassis in the Y direction of the vehicle, which has certain difficulties in the layout of the front cabin. Utility Model Content

[0003] In order to solve the defects in the prior art, the utility model provides a suspension structure for an off-road electric vehicle.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a suspension structure for an off-road electric vehicle, comprising a load-bearing element, wherein a vibration-damping element and three secondary vibration-isolating elements are connected to the load-bearing element by interference fit, wherein the three secondary vibration-isolating elements are respectively arranged on both sides of the vibration-damping element, wherein the axial direction of the bushing of one secondary vibration-isolating element is perpendicular to the axial directions of the bushings of the other two secondary vibration-isolating elements.

[0006] As a preferred technical solution of the utility model, it includes three suspension structures, and the three suspension structures are respectively a left suspension assembly, a right suspension assembly and a front suspension.

[0007] As a preferred technical solution of the utility model, it also includes two brackets, between which the rear cross beam of the front cabin of the frame, the lower cross beam of the front cabin of the frame and the subframe are connected in sequence from left to right.

[0008] As a preferred technical solution of the utility model, it also includes an electric drive assembly, and the vibration-damping element is fixedly connected to the electric drive assembly through a fastener.

[0009] As a preferred technical solution of the utility model, the rear cross beam of the front cabin of the frame is fixedly connected to two secondary vibration isolation elements of the left suspension assembly and the right suspension assembly through fasteners.

[0010] As a preferred technical solution of the utility model, the lower cross beam of the front cabin of the frame is fixedly connected to one of the secondary vibration isolation elements of the left suspension assembly and the right suspension assembly through fasteners, and the left suspension assembly and the right suspension assembly are symmetrically arranged.

[0011] As a preferred technical solution of the utility model, the front suspension is fixedly connected to the U-shaped bracket on the subframe through a fastener.

[0012] The beneficial effects of the utility model are:

[0013] 1. This off-road electric vehicle suspension structure further improves the vibration isolation effect of the suspension system through three secondary vibration isolation bushings, and the three secondary vibration isolation bushings are respectively on both sides of the vibration reduction element, and the axial direction of one vibration isolation bushing is perpendicular to the axial direction of the other two vibration isolation bushings, which improves the stress state of the left and right side suspensions and improves the mode and stiffness of the suspension bracket.

[0014] 2. The suspension structure of this off-road electric vehicle can meet the layout principles of new energy pure electric vehicles by rationally designing the structure of the load-bearing components. The center of the triangle formed by the center of mass of the electric drive assembly and the center point of the suspension elasticity basically coincides with the Z-direction projection of the vehicle, and the force on each suspension is more uniform, which improves the limiting capacity of the suspension system and the robustness of the suspension system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the exploded structure of Example 1 of a suspension structure of an off-road electric vehicle of the utility model;

[0017] Figure 2 This is a schematic diagram of the explosion structure of embodiment 2 of the utility model for an off-road electric vehicle suspension structure;

[0018] Figure 3 This is a rendering of the installation effect of Example 2 of the off-road electric vehicle suspension structure of the utility model.

[0019] In the figure: 1. load-bearing element; 2. vibration-damping element; 3. secondary vibration isolation element; 4. left suspension assembly; 5. right suspension assembly; 6. front suspension; 7. bracket; 8. rear cross beam of the front cabin of the frame; 9. lower cross beam of the front cabin of the frame; 10. subframe; 11. electric drive assembly. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example 1: Figure 1As shown, the utility model is an off-road electric vehicle suspension structure, including a load-bearing element 1, in which a vibration-damping element 2 and three secondary vibration isolation elements 3 are connected by interference fit, and the three secondary vibration isolation elements 3 are respectively arranged on both sides of the vibration-damping element 2, one end of which is connected to the rear cross beam of the front cabin of the frame, and the axial direction of the bushing is the Y direction of the whole vehicle, and the other end is connected to the lower cross beam of the front cabin of the frame, and the axial direction of the bushing is the Z direction of the whole vehicle, and the axial direction of the bushing of one secondary vibration isolation element 3 is perpendicular to the axial directions of the bushings of the other two secondary vibration isolation elements 3, so that the suspension force is more uniform, and at the same time the mode and stiffness of the suspension bracket are improved.

[0022] When working, this off-road electric vehicle suspension structure further improves the vibration isolation effect of the suspension system through three secondary vibration isolation bushings, and the three secondary vibration isolation bushings are respectively on both sides of the vibration reducing element 2, and the axial direction of one vibration isolation bushing is perpendicular to the axial direction of the other two vibration isolation bushings, thereby improving the stress state of the left and right side suspensions and improving the mode and stiffness of the suspension bracket 7.

[0023] Embodiment 2, as Figure 2 and Figure 3 As shown, further improvements are made on the basis of Example 1, including three suspension structures, and the three suspension structures are respectively a left suspension assembly 4, a right suspension assembly 5 and a front suspension 6, and also include two brackets 7, between which the rear cross beam 8 of the front compartment of the frame, the lower cross beam 9 of the front compartment of the frame and the subframe 10 are connected from left to right, and also include an electric drive assembly 11, the vibration damping element 2 is fixedly connected to the electric drive assembly 11 through a fastener, the rear cross beam 8 of the front compartment of the frame is fixedly connected to two secondary vibration isolation elements 3 of the left suspension assembly 4 and the right suspension assembly 5 through fasteners, the lower cross beam 9 of the front compartment of the frame is fixedly connected to one of the secondary vibration isolation elements 3 of the left suspension assembly 4 and the right suspension assembly 5 through fasteners, and the left suspension assembly 4 and the right suspension assembly 5 are symmetrically arranged, and the front suspension 6 is fixedly connected to the U-shaped bracket on the subframe 10 through fasteners.

[0024] During operation, by reasonably designing the structure of the load-bearing component 1, the arrangement of the electric drive assembly 11 in the frame can meet the new energy pure electric layout principle, so that the center of the triangle formed by the center of mass of the electric drive assembly 11 and the elastic center point of the suspension basically coincides with the Z-direction projection of the vehicle, and the force on each suspension is more uniform, which improves the limiting capacity of the suspension system and the robustness of the suspension system.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An off-road electric vehicle suspension structure, characterized in that: The invention comprises a load-bearing element (1), wherein a vibration-damping element (2) and three secondary vibration-isolating elements (3) are connected to the load-bearing element (1) by interference fit, and the three secondary vibration-isolating elements (3) are respectively arranged on both sides of the vibration-damping element (2), and the axial direction of the bushing of one secondary vibration-isolating element (3) is perpendicular to the axial direction of the bushings of the other two secondary vibration-isolating elements (3).

2. The off-road electric vehicle suspension structure according to claim 1, characterized in that: It comprises three suspension structures, and the three suspension structures are respectively a left suspension assembly (4), a right suspension assembly (5) and a front suspension (6).

3. The off-road electric vehicle suspension structure according to claim 2, characterized in that: It also comprises two brackets (7), between which the rear cross beam (8) of the front cabin of the frame, the lower cross beam (9) of the front cabin of the frame and the auxiliary frame (10) are sequentially connected from left to right.

4. The off-road electric vehicle suspension structure according to claim 3, characterized in that: It also includes an electric drive assembly (11), and the vibration-damping element (2) is fixedly connected to the electric drive assembly (11) via a fastener.

5. The off-road electric vehicle suspension structure according to claim 4, characterized in that: The rear cross beam (8) of the front cabin of the vehicle frame is fixedly connected to two secondary vibration isolation elements (3) of the left suspension assembly (4) and the right suspension assembly (5) via fasteners.

6. The off-road electric vehicle suspension structure according to claim 5, characterized in that: The lower cross beam (9) of the front cabin of the vehicle frame is fixedly connected to one of the secondary vibration isolation elements (3) of the left suspension assembly (4) and the right suspension assembly (5) via fasteners, and the left suspension assembly (4) and the right suspension assembly (5) are symmetrically arranged.

7. The off-road electric vehicle suspension structure according to claim 6, characterized in that: The front suspension (6) is fixedly connected to the U-shaped bracket on the sub-frame (10) via a fastener.

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