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CN-224229150-U - Light rubber-plastic composite air spring bag cover

CN224229150UCN 224229150 UCN224229150 UCN 224229150UCN-224229150-U

Abstract

The utility model relates to a lightweight rubber-plastic composite air spring bag cover, which comprises a bag cover body with a hollow interior and two open ends, wherein the bag cover body comprises an upper bag cover and a lower bag cover, the middle parts of the upper bag cover and the lower bag cover are convex curled sections, the diameter of the joint of the upper bag cover and the lower bag cover is gradually reduced from the two ends to the middle, an external elastic layer, a first ply, a middle elastic layer, a second ply and an internal elastic layer are sequentially arranged on the bag cover body from outside to inside, and the cords of the first ply and the second ply are X-shaped. The utility model has the advantages of light weight, high strength, good durability, good sealing performance, good anti-skid performance, strong self-cleaning capability and the like, and can be widely applied to the fields of automobiles, railway vehicles, engineering machinery and the like.

Inventors

  • WEI CHEN
  • LI XUEBING
  • WANG XIJIAN
  • XUAN SHUBO
  • TANG XIAOLI
  • ZHOU XINCHENG
  • XUE HENG
  • HUANG JIAN

Assignees

  • 南阳金博减振科技有限公司

Dates

Publication Date
20260512
Application Date
20250527

Claims (10)

  1. 1. The lightweight rubber-plastic composite air spring bag cover comprises a bag cover body with hollow inside and two open ends, wherein the bag cover body comprises an upper bag cover (1) and a lower bag cover (2), and is characterized in that the middle parts of the upper bag cover (1) and the lower bag cover (2) are outwards-protruded curled sections (3), the diameter of the joint of the upper bag cover (1) and the lower bag cover (2) is gradually reduced from two ends to the middle, an outer elastic layer (4), a first ply (5), a middle elastic layer (6), a second ply (7) and an inner elastic layer (8) are sequentially arranged on the bag cover body from outside to inside, and the cords of the first ply (5) and the second ply (7) are X-shaped.
  2. 2. The lightweight rubber-plastic composite air spring bladder according to claim 1, wherein the number of the first ply (5) and the second ply (7) is 1-3.
  3. 3. The lightweight rubber-plastic composite air spring capsule according to claim 2, wherein the first and second plies (5, 7) comprise first and second cords (9, 10), the first and second cords (9, 10) are interlaced with each other, and an included angle formed by the first and second cords (9, 10) is in a range of 5-60 degrees.
  4. 4. The lightweight rubber-plastic composite air spring capsule according to claim 3, wherein an included angle formed by the first cords (9) and the second cords (10) in the curled section (3) in a staggered manner ranges from 35 degrees to 60 degrees.
  5. 5. The lightweight rubber-plastic composite air spring capsule according to claim 4, wherein an included angle formed by the first cords (9) and the second cords (10) at the fixing positions of the two ends and at the middle joint in the capsule body ranges from 5 degrees to 45 degrees, and an included angle formed by the first cords (9) and the second cords (10) in the curled section (3) is larger than an included angle formed by the first cords (9) and the second cords (10) at the fixing positions of the two ends and at the middle joint.
  6. 6. The lightweight rubber-plastic composite air spring capsule shell as set forth in claim 1, wherein annular reinforcing parts (11) are arranged at openings at two ends of the capsule shell body, the thickness of the annular reinforcing parts (11) is 1-3mm thicker than that of other parts of the capsule shell body, and steel wire rings are embedded in the annular reinforcing parts (11).
  7. 7. The lightweight rubber-plastic composite air spring capsule shell according to claim 1, wherein a plurality of evenly distributed anti-skidding bulges are arranged on the surfaces of the curled sections (3) of the upper-section capsule shell (1) and the lower-section capsule shell (2).
  8. 8. The lightweight rubber-plastic composite air spring capsule according to claim 1, wherein the outer surface of the outer elastic layer (4) is provided with a layer of nano coating.
  9. 9. The lightweight rubber-plastic composite air spring capsule according to claim 1, wherein the outer elastic layer (4), the middle elastic layer (6) and the inner elastic layer (8) are made of thermoplastic elastomer materials.
  10. 10. The lightweight rubber-plastic composite air spring bladder according to claim 9, wherein the cords in the first ply (5) and the second ply (7) are made of aramid fibers or high-strength polyester fibers.

Description

Light rubber-plastic composite air spring bag cover Technical Field The application relates to the technical field of air springs, in particular to a lightweight rubber-plastic composite air spring bag cover. Background Air springs are widely used in many fields as an important elastic element. The traditional air spring capsule is made of rubber materials, so that the strength and the bearing capacity of the air spring capsule are guaranteed, the thickness of rubber is required to be increased, the weight of the capsule is large, the lightweight design of equipment is not facilitated, and the energy consumption is increased. Meanwhile, in the use process of the air spring, the bag cover needs to bear repeated curling and stretching actions, particularly in a curling section, stress concentration is easy to occur, and the problems of cord breakage, stripping between rubber and cord and the like are caused, so that the service life and reliability of the bag cover are reduced. In addition, the structural design and the material selection of the existing air spring bag cover are single, and the requirements of different parts on mechanical properties are difficult to meet at the same time, for example, the fixed end needs higher axial rigidity, and the rolling section needs good flexibility and fatigue resistance. Therefore, the development of the air spring capsule shell which is light in weight, high in strength and capable of meeting the mechanical property requirements of different parts has important practical significance. Disclosure of utility model The utility model mainly aims at the problems that the existing capsule skin is heavy, is easy to fatigue and damage and cannot meet the mechanical property requirements of different parts, and provides a lightweight rubber-plastic composite air spring capsule skin, which improves the overall performance and service life of an air spring. The aim of the utility model is mainly achieved by the following scheme: The lightweight rubber-plastic composite air spring bag cover comprises a bag cover body with hollow inside and two open ends, wherein the bag cover body comprises an upper bag cover and a lower bag cover, the middle parts of the upper bag cover and the lower bag cover are outwards-protruded curled sections, the diameter of the joint of the upper bag cover and the lower bag cover is gradually reduced from two ends to the middle, an external elastic layer, a first ply, a middle elastic layer, a second ply and an internal elastic layer are sequentially arranged on the bag cover body from outside to inside, and the cords of the first ply and the second ply are all X-shaped. Preferably, the number of the first ply and the second ply is 1-3. Preferably, the first ply and the second ply each comprise first cords and second cords, the first cords and the second cords are staggered with each other, and an included angle formed by the first cords and the second cords in a staggered manner ranges from 5 degrees to 60 degrees. Preferably, the included angle formed by the first cords and the second cords in the curling section in a staggered way is in the range of 35-60 degrees. Preferably, the included angle formed by the first cords and the second cords at the fixing positions of the two ends and the connecting position of the middle in the bag cover body in a staggered way is 5-45 degrees, and the included angle formed by the first cords and the second cords in the rolling section in a staggered way is larger than the included angle formed by the first cords and the second cords at the fixing positions of the two ends and the connecting position of the middle. Preferably, annular reinforcing parts are arranged at the openings at the two ends of the capsule shell body, the thickness of the annular reinforcing parts is 1-3mm thicker than that of other parts of the capsule shell body, and the steel wire rings are embedded in the annular reinforcing parts. Preferably, the surfaces of the curled sections of the upper section of the capsule skin and the lower section of the capsule skin are respectively provided with a plurality of evenly distributed anti-slip bulges. Preferably, the outer surface of the outer elastic layer is provided with a nano-coating layer. Preferably, the outer elastic layer, the middle elastic layer and the inner elastic layer are all made of thermoplastic elastomer materials. Preferably, the cords in the first and second plies are made of aramid fibers or high strength polyester fibers. In summary, compared with the prior art, the utility model has the following beneficial technical effects: (1) According to the utility model, the thermoplastic elastomer material is used as the elastic layer to replace the traditional rubber material, so that the weight of the bag cover is greatly reduced, the light weight of equipment is realized, and the energy consumption is reduced; (2) The utility model can effectively disperse stress in the X-shaped co