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CN-122008753-A - Leaf spring assembly for suspension system and vehicle

CN122008753ACN 122008753 ACN122008753 ACN 122008753ACN-122008753-A

Abstract

The application provides a plate spring assembly and a vehicle for a suspension system, wherein the plate spring assembly comprises a plate spring, rolling lugs are arranged at two ends of the plate spring, a protection component is connected with the plate spring, part of the protection component is arranged on the lower side of the thickness direction of the plate spring and extends along the length direction of the plate spring, and the other part of the protection component is bent towards one side where the top surface of the plate spring is positioned at two ends of the plate spring to form a limiting space.

Inventors

  • LIU MINGRUI
  • LU HAO
  • ZHU HONGBIN
  • LIU YIJUN
  • LI YINGJIE

Assignees

  • 一汽解放汽车有限公司

Dates

Publication Date
20260512
Application Date
20260228

Claims (10)

  1. 1. A leaf spring assembly for a suspension system comprising: A leaf spring (10), wherein both ends of the leaf spring (10) are provided with rolling lugs (11); The protection component (20), protection component (20) with leaf spring (10) are connected, and part protection component (20) are located leaf spring (10) thickness direction's downside and follow leaf spring (10) length direction extends and sets up, and protection component (20) of another part are in both ends of leaf spring (10) are towards one side that leaf spring (10) top surface is located is buckled and is formed spacing space (200), wherein, each tremble (11) are located corresponding spacing space (200).
  2. 2. Leaf spring assembly for a suspension system according to claim 1, characterized in that the protection component (20) comprises: a protection sheet (21), wherein the protection sheet (21) is connected with the plate spring (10), and the protection sheet (21) is positioned at the lower side of the plate spring (10); The limiting pieces (22) are connected with the plate spring (10), one end of each limiting piece (22) is connected with the corresponding protecting piece (21), the other end of each limiting piece (22) bends towards one side where the top surface of the plate spring (10) is located to form a limiting space (200), two limiting pieces (22) are arranged, and the two limiting pieces (22) are oppositely arranged at two ends of the protecting piece (21) in the length direction; and the plate spring (10) is connected with the protective sheet (21) and the limiting piece (22) through the clamping clips (23).
  3. 3. Leaf spring assembly for a suspension system according to claim 2, characterized in that the stop (22) comprises: A first connection section (221), wherein one end of the first connection section (221) is connected with the protection sheet (21), the first connection section (221) is connected with the plate spring (10), and the first connection section (221) is positioned at the lower side of the plate spring (10) in the thickness direction; the coating section (222), one end of the coating section (222) is connected with the other end of the first connecting section (221), the other end of the coating section (222) is bent towards one side of the top surface of the plate spring (10), and a part of the first connecting section (221) and the coating section (222) are enclosed to form the limit space (200); the second connecting section (223), second connecting section (223) with the other end of cladding section (222) is connected, second connecting section (223) with leaf spring (10) are connected, and part second connecting section (223) are followed the length direction of protection piece (21) extends ground setting, and another part the other end of second connecting section (223) is followed the thickness direction of protection piece (21) is kept away from protection piece (21) extends.
  4. 4. Leaf spring assembly for a suspension system according to claim 2, characterized in that between each of the lugs (11) and the corresponding stop (22) there are provided antifriction pads (24), the antifriction pads (24) being a plurality, the antifriction pads (24) being arranged at intervals in the circumferential direction of each of the lugs (11).
  5. 5. Leaf spring assembly for a suspension system according to claim 2, characterized in that between each of the lugs (11) and the corresponding stop (22) there are provided antifriction pads (24), the antifriction pads (24) being two, the two antifriction pads (24) being oppositely disposed in the height direction of each of the lugs (11).
  6. 6. Leaf spring assembly for a suspension system according to any one of claims 2-5, characterized in that the leaf spring (10) comprises: the plate spring body (100), the plate spring body (100) is connected with the protection piece (21) and the limiting piece (22) through the clamp (23), and two ends of the plate spring body (100) are respectively connected with one rolling lug (11); the thickness of the two ends of the plate spring body (100) in the length direction is smaller than or equal to the thickness of the middle part of the plate spring body (100).
  7. 7. The leaf spring assembly for a suspension system according to claim 6, wherein the thickness of the leaf spring body (100) is provided to vary from the middle to both ends of the leaf spring body (100) along the length direction of the leaf spring body (100).
  8. 8. Leaf spring assembly for a suspension system according to claim 7, characterized in that the leaf spring body (100) comprises: A first component section (101), wherein the thickness of the first component section (101) is gradually reduced from the middle part of the first component section (101) to two ends along the length direction of the plate spring body (100); A second component section (102), wherein one end of the second component section (102) is connected with the first component section (101), the other end of the second component section (102) is connected with the winding lug (11), and the thickness of the second component section (102) is gradually increased along the length direction of the plate spring body (100) away from the first component section (101); The two second component sections (102) are oppositely arranged at two ends of the first component section (101) in the length direction.
  9. 9. Leaf spring assembly for a suspension system according to claim 6, characterized in that the width of the protective sheet (21) is greater than the width of the stop (22) and/or the width of the leaf spring body (100) is greater than the width of the winding lug (11).
  10. 10. A vehicle comprising a suspension system or a leaf spring assembly for a suspension system, characterized in that the suspension system comprises the leaf spring assembly for a suspension system as claimed in any one of claims 1 to 9.

Description

Leaf spring assembly for suspension system and vehicle Technical Field The application relates to the technical field of suspension systems, in particular to a leaf spring assembly for a suspension system and a vehicle. Background In the prior art, front suspension systems for commercial vehicles commonly employ a single leaf spring or two leaf spring construction. In a front suspension system of a vehicle, when exposed to severe road conditions or high-strength use, a single-piece spring plate spring is liable to break in different sections. For example, the breakage of the first half directly affects the normal guiding function of the vehicle, while the breakage of the second half may cause the risk of the leaf spring coming into contact with the ground, or even aggravate the deformation phenomenon during braking, both of which have a serious impact on the driving safety. In addition, the design of a single leaf spring lacks sufficient redundancy, and once the main sheet fails, the whole suspension system cannot continuously ensure the operation stability and safety of the vehicle, which is a critical problem to be solved in practical application. In view of the above problems, no effective solution has been proposed at present. Disclosure of Invention The main object of the present application is to provide a leaf spring assembly for a suspension system and a vehicle to solve the problem of the prior art suspension system that the safety of the vehicle is reduced when the single leaf spring breaks. In order to achieve the above object, according to one aspect of the present application, there is provided a leaf spring assembly for a suspension system, comprising a leaf spring having lugs at both ends thereof, and a protection member connected to the leaf spring, part of the protection member being located at a lower side in a thickness direction of the leaf spring and extending in a length direction of the leaf spring, and the other part of the protection member being bent at both ends of the leaf spring toward a side where a top surface of the leaf spring is located to form a limit space, wherein each lug is located in a corresponding limit space. The protection component comprises a protection sheet, limiting pieces and clamping hoops, wherein the protection sheet is connected with the plate spring, the protection sheet is located on the lower side of the plate spring, one ends of the limiting pieces are connected with the plate spring, the other ends of the limiting pieces are bent towards one side where the top surface of the plate spring is located to form a limiting space, the number of the limiting pieces is two, the two limiting pieces are oppositely arranged at two ends of the protection sheet in the length direction, and the plate spring is connected with the protection sheet and the limiting pieces through the clamping hoops. Further, the limiting piece comprises a first connecting section, wherein one end of the first connecting section is connected with the protective sheet, the first connecting section is connected with the plate spring, and the first connecting section is positioned at the lower side of the plate spring in the thickness direction; the second connecting section is connected with the other end of the cladding section, the second connecting section is connected with the leaf spring, the second connecting section of the part is arranged in an extending mode along the length direction of the protection sheet, and the other end of the second connecting section of the other part is far away from the protection sheet along the thickness direction of the protection sheet. Further, antifriction pads are arranged between each winding lug and the corresponding limiting piece, the antifriction pads are multiple, and the antifriction pads are arranged at intervals along the circumferential direction of each winding lug. Further, antifriction pads are arranged between each winding lug and the corresponding limiting piece, the number of the antifriction pads is two, and the two antifriction pads are oppositely arranged along the height direction of each winding lug. The plate spring comprises a plate spring body, wherein the plate spring body is connected with a protection piece and a limiting piece through a clamp, two ends of the plate spring body are respectively connected with one rolling lug, and the thickness of the two ends of the plate spring body in the length direction is smaller than or equal to the thickness of the middle part of the plate spring body. Further, the thickness of the leaf spring body is provided to vary from the middle to both ends of the leaf spring body in the longitudinal direction of the leaf spring body. The plate spring body comprises a first component section, a second component section and a winding lug, wherein the thickness of the first component section is gradually reduced from the middle part of the first component section to two ends along the leng