Longitudinal leaf spring front suspension assembly installation structure for bent frame

Abstract

The present invention discloses a longitudinal leaf spring front suspension assembly installation structure for a bending type frame, comprising a bending type frame, two hanging ear brackets, two front spring brackets, two shock absorber upper mounting brackets, two leaf spring assemblies, two shock absorbers and an axle; the beneficial technical effect of the present invention is: a longitudinal leaf spring front suspension assembly installation structure for a bending type frame is proposed, the scheme can make full use of the space around the bending part, and can avoid increasing the leaf spring span, eliminating the negative impact of the increased span.

Description

Technical Field

[0001] The invention relates to a front suspension assembly mounting structure of a heavy-duty vehicle, in particular to a longitudinal leaf spring front suspension assembly mounting structure for a bending type frame. Background Art

[0002] With the development of technology, more and more devices need to be carried on heavy-duty vehicles, and the installation space on the frame is very tight. How to effectively use the installation space on the frame has become one of the important tasks of vehicle design; the existing longitudinal leaf spring front suspension, the front and rear ends of which are connected to the frame through the front spring bracket and the ear bracket respectively; limited by conventional ideas, when the existing technology combines the longitudinal leaf spring front suspension with the bending frame, the connection part of the ear bracket and the frame is usually avoided from the bending part on the frame. The most common practice is to increase the leaf spring span and set the ear bracket on the rear straight section. The increase in the leaf spring span will inevitably affect the arrangement of other components, and the bending part on the frame is not suitable for carrying other devices, and the space around the bending part cannot be used. Summary of the invention

[0003] In view of the problems in the background technology, the present invention proposes a longitudinal leaf spring front suspension assembly installation structure for a bent frame, the innovation of which is that it includes a bent frame, two hanging ear brackets, two front spring brackets, two shock absorber upper mounting brackets, two leaf spring assemblies, two shock absorbers and axles;

[0004] The folding frame is formed in sequence from front to rear along the axial direction into a front straight section, a tapered section and a rear straight section, the lateral width of the front straight section is greater than the lateral width of the rear straight section, the front straight section and the rear straight section are smoothly transitioned through the tapered section, and a bending portion is formed at the connection between the tapered section and the rear straight section;

[0005] The two hanging ear brackets are symmetrical in structure, and the two hanging ear brackets are respectively arranged on the outer walls on the left and right sides of the bending part; the lower end of the hanging ear bracket is provided with a connecting structure for connecting the leaf spring hanging ear, and the inner side surface of the hanging ear bracket is provided with two mounting surfaces, the first mounting surface is located in front of the second mounting surface, the first mounting surface matches the outer wall of the tapered section, and the second mounting surface matches the outer wall of the rear straight section, and a plurality of bolt holes are provided on the mounting surface;

[0006] Two front spring brackets are respectively arranged on the inner walls of the left and right sides of the front straight section; two shock absorber upper mounting brackets are respectively arranged on the outer walls of the left and right sides of the front straight section, and the shock absorber upper mounting bracket is located at the rear side of the front spring bracket; the front spring bracket, the shock absorber upper mounting bracket and the hanging ear bracket located on the same side constitute a single-side mounting structure; the axle is located at the lower side of the frame, and the axle axis is perpendicular to the frame axis;

[0007] The two leaf spring assemblies correspond to the two single-side mounting structures respectively; the front end of the leaf spring assembly is connected to the corresponding front spring bracket, and the rear end of the leaf spring assembly is connected to the connecting structure on the corresponding hanging ear bracket through the leaf spring hanging ear; the middle part of the leaf spring assembly is connected to the axle; the axial direction of the leaf spring assembly is parallel to the axial direction of the frame;

[0008] The two shock absorbers correspond to the two single-side mounting structures respectively, the upper ends of the shock absorbers are rotatably connected to the corresponding upper mounting brackets of the shock absorbers, and the lower ends of the shock absorbers are rotatably connected to the vehicle axle.

[0009] The principle of the present invention is that the lifting ear bracket is provided with two mounting surfaces so that it can be installed on the outer wall of the bent portion of the frame, which can not only make full use of the space around the bent portion, but also avoid increasing the span of the leaf spring and eliminate the negative impact caused by the increase in the span of the leaf spring, and indirectly save the installation space on the rear straight section so that it can be allocated to other vehicle-mounted devices. At the same time, since the lifting ear bracket is arranged on the outer wall of the bent portion and the front spring bracket is arranged on the inner wall of the front straight section, the longitudinal posture of the leaf spring can still be guaranteed, thereby obtaining a new longitudinal leaf spring front suspension assembly installation structure.

[0010] The beneficial technical effect of the present invention is: a longitudinal leaf spring front suspension assembly installation structure for a bent frame is proposed, which can make full use of the space around the bent part, avoid increasing the leaf spring span, and eliminate the negative impact of the increased span. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 , a schematic diagram of the structure of the present invention;

[0012] Figure 2 , a schematic diagram of the top view of the structure of the present invention;

[0013] Figure 3 , a schematic diagram of the inner side structure of the hanging ear bracket;

[0014] Figure 4 , schematic diagram of the outer side structure of the lifting ear bracket;

[0015] Figure 5 , a top view of the lifting eye bracket (the lifting eye bracket in the figure is used for the left side of the frame, and the structure of the lifting eye bracket used for the right side of the frame is symmetrical to the structure in the figure);

[0016] The names corresponding to the various marks in the figure are: ear bracket 1, first mounting surface 11, second mounting surface 12, connecting structure 13 for connecting the leaf spring ear, front spring bracket 2, shock absorber upper mounting bracket 3, leaf spring assembly 5, shock absorber 6, axle 7. DETAILED DESCRIPTION

[0017] A longitudinal leaf spring front suspension assembly installation structure for a bending type frame, the innovation of which is: comprising a bending type frame, two hanging ear brackets 1, two front spring brackets 2, two shock absorber upper mounting brackets 3, two leaf spring assemblies 5, two shock absorbers 6 and axles 7;

[0018] The folding frame is formed in sequence from front to rear along the axial direction into a front straight section, a tapered section and a rear straight section, the lateral width of the front straight section is greater than the lateral width of the rear straight section, the front straight section and the rear straight section are smoothly transitioned through the tapered section, and a bending portion is formed at the connection between the tapered section and the rear straight section;

[0019] The two hanging ear brackets 1 are symmetrical in structure, and the two hanging ear brackets 1 are respectively arranged on the outer walls on the left and right sides of the bending part; the lower end of the hanging ear bracket 1 is provided with a connecting structure for connecting the leaf spring hanging ear, and two mounting surfaces are arranged on the inner side surface of the hanging ear bracket 1, the first mounting surface is located in front of the second mounting surface, the first mounting surface matches the outer wall of the tapered section, and the second mounting surface matches the outer wall of the rear straight section, and a plurality of bolt holes are arranged on the mounting surface;

[0020] Two front spring brackets 2 are respectively arranged on the inner walls of the left and right sides of the front straight section; two shock absorber upper mounting brackets 3 are respectively arranged on the outer walls of the left and right sides of the front straight section, and the shock absorber upper mounting bracket 3 is located at the rear side of the front spring bracket 2; the front spring bracket 2, the shock absorber upper mounting bracket 3 and the ear bracket 1 located on the same side constitute a single-side mounting structure; the axle 7 is located at the lower side of the frame, and the axial direction of the axle 7 is perpendicular to the axial direction of the frame;

[0021] The two leaf spring assemblies 5 correspond to the two single-side mounting structures respectively; the front end of the leaf spring assembly 5 is connected to the corresponding front spring bracket 2, and the rear end of the leaf spring assembly 5 is connected to the connecting structure on the corresponding ear bracket 1 through the leaf spring ear; the middle part of the leaf spring assembly 5 is connected to the axle 7; the axial direction of the leaf spring assembly 5 is parallel to the axial direction of the frame;

[0022] The two shock absorbers 6 correspond to the two single-side mounting structures respectively. The upper end of the shock absorber 6 is rotatably connected to the corresponding shock absorber upper mounting bracket 3 , and the lower end of the shock absorber 6 is rotatably connected to the axle 7 .

Claims

1. A longitudinal leaf spring front suspension assembly installation structure for a bending type frame, characterized in that: It comprises a bending type frame, two hanging ear brackets (1), two front spring brackets (2), two shock absorber upper mounting brackets (3), two leaf spring assemblies (5), two shock absorbers (6) and a vehicle axle (7); The folding frame is formed in sequence from front to rear along the axial direction into a front straight section, a tapered section and a rear straight section, the lateral width of the front straight section is greater than the lateral width of the rear straight section, the front straight section and the rear straight section are smoothly transitioned through the tapered section, and a bending portion is formed at the connection between the tapered section and the rear straight section; The two hanging ear brackets (1) are symmetrical in structure, and the two hanging ear brackets (1) are respectively arranged on the outer walls on the left and right sides of the bent portion; a connecting structure for connecting the leaf spring hanging ear is arranged at the lower end of the hanging ear bracket (1); two mounting surfaces are arranged on the inner side surface of the hanging ear bracket (1), the first mounting surface is located in front of the second mounting surface, the first mounting surface matches the outer wall of the tapered section, and the second mounting surface matches the outer wall of the rear straight section, and a plurality of bolt holes are arranged on the mounting surface; Two front spring brackets (2) are respectively arranged on the inner walls of the left and right sides of the front straight section; two shock absorber upper mounting brackets (3) are respectively arranged on the outer walls of the left and right sides of the front straight section, and the shock absorber upper mounting bracket (3) is located at the rear side of the front spring bracket (2); the front spring bracket (2), the shock absorber upper mounting bracket (3) and the hanging ear bracket (1) located on the same side constitute a single-side mounting structure; the axle (7) is located at the lower side of the frame, and the axial direction of the axle (7) is perpendicular to the axial direction of the frame; The two leaf spring assemblies (5) correspond to the two single-side mounting structures respectively; the front end of the leaf spring assembly (5) is connected to the corresponding front spring bracket (2), and the rear end of the leaf spring assembly (5) is connected to the connecting structure on the corresponding lifting bracket (1) through the leaf spring lifting ear; the middle part of the leaf spring assembly (5) is connected to the axle (7); the axial direction of the leaf spring assembly (5) is parallel to the axial direction of the frame; The two shock absorbers (6) correspond to the two single-sided mounting structures respectively; the upper ends of the shock absorbers (6) are rotatably connected to the corresponding shock absorber upper mounting brackets (3); and the lower ends of the shock absorbers (6) are rotatably connected to the vehicle axle (7).

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