CN110905961A

CN110905961A - A composite lightweight piston structure in an air suspension system

Info

Publication number: CN110905961A
Application number: CN201911332575.2A
Authority: CN
Inventors: 钟胜; 朱杰; 刘庆武; 钟炳林
Original assignee: Shanghai Wyman Beijing Great Automotive Components Co Ltd
Current assignee: Shanghai Wyman Beijing Great Automotive Components Co Ltd
Priority date: 2019-12-22
Filing date: 2019-12-22
Publication date: 2020-03-24

Abstract

The invention discloses a composite lightweight piston structure in an air suspension system, comprising an upper top plate, a piston cylinder, a lower bottom plate and a stainless steel stud. The lower bottom surface is welded and fixed on the upper top surface of the circular tube, the lower bottom surface of the circular tube is welded with the upper part of the lower bottom plate, the outer surface of the lower bottom plate is welded on the inner surface of the piston cylinder, and the circular tube is sleeved on the piston. inside the cylinder, and the top of the round tube passes through the top of the piston cylinder, the lower bottom plate and the stainless steel stud are inlaid and die-casted, and the stainless steel stud is arranged in the center of the bottom of the lower bottom plate; the composite lightweight piston in the air suspension system Structure, the weight is reduced by 55%, the body is light, and it can avoid stress concentration on the lower bottom plate and cracks in the bottom bottom plate during the large impact process, effectively improve the service life of the piston assembly, reduce production costs and maintenance costs, and avoid The whole vehicle cannot run.

Description

Compound lightweight piston structure in air suspension system

Technical Field

The invention relates to the technical field of air suspensions, in particular to a compound lightweight piston structure in an air suspension system.

Background

Air suspensions are increasingly used in vehicles due to their unique advantages, and air suspension systems are also being developed toward light weight and high strength, in addition to being developed in an effort to improve riding comfort and safety. The air spring assembly plays a crucial role as a performance part in the air suspension system, and the piston assembly is always a key part of the air spring assembly.

The piston assembly in the prior art has a complex overall structure and more welding, and brings great inconvenience and high labor intensity to welding personnel; in addition, stress concentration and welding deformation are easily caused in the stress process of the lower bottom plate of the piston assembly, so that the lower bottom plate is cracked, the air spring assembly leaks air, and the whole vehicle cannot run. The large area of the supporting seat matched with the supporting seat can avoid the use problem.

In view of the deficiencies of the prior art, it is necessary to design a composite lightweight piston structure in an air suspension system.

Disclosure of Invention

The present invention is directed to a composite lightweight piston structure in an air suspension system to solve the above-mentioned problems of the background art.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a compound lightweight piston structure in air suspension system, includes top plate, piston cylinder, lower plate and stainless steel double-screw bolt, the round hole has been seted up to the top central authorities of top plate, the last top surface of lower bottom surface welded fastening at the pipe of top plate, the lower bottom surface and the lower plate upper portion assembly welding of pipe, the outer edgewise welding of lower plate is on the medial surface of piston cylinder, the pipe cover is established in the piston cylinder, and the top of piston cylinder is worn out at the top of pipe, die-casting constitution is inlayed to lower plate and stainless steel double-screw bolt, and the stainless steel double-screw bolt setting is central in the bottom of lower plate.

Furthermore, the lower bottom plate comprises a disc surface and a ring surface which are parallel to each other, the disc surface and the ring surface are connected through a V-shaped conical surface with unequal cross sections, the inner edge of the ring surface is in transitional connection with the upper end of the V-shaped conical surface through two non-concentric circular arcs, and the outer edge of the disc surface is in transitional connection with the lower end of the V-shaped conical surface through two non-concentric circular arcs.

Furthermore, the middle section of the side surface of the round pipe is provided with a through hole.

Furthermore, the middle part of the lower bottom plate is provided with a V-shaped cylinder which is integrally formed by die casting.

Further, the piston cylinder is a cylindrical surface with unequal cross sections.

Compared with the prior art, the invention has the following beneficial effects: this compound lightweight piston structure in air suspension system, lower plate include the parallel disc face and the torus of project, and disc face and torus are connected through the V type circular conical surface of unequal cross-section, through two big circular arcs transitional coupling of decentraction between the inward flange of torus and the upper end of V type circular conical surface, through two big circular arcs transitional coupling of decentraction between the outward flange of disc face and the lower extreme of V type circular conical surface. By adopting the structure, the weight of the piston assembly can be reduced by 55%, the piston assembly is light and handy as a whole, the stress concentration of the lower bottom plate can be avoided in the process of large impact, the lower bottom plate is prevented from cracking, the service life of the piston assembly is effectively prolonged, the production cost and the maintenance cost are reduced, and the phenomenon that the whole vehicle cannot run can be avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall construction of the present invention;

in the figure: 100. an upper top plate; 200. a piston cylinder; 300. a lower base plate; 400. a stainless steel stud; 110. a circular hole; 310. a circular tube; 311. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a composite lightweight piston structure in an air suspension system comprises an upper top plate 100, a piston cylinder 200, a lower bottom plate 300 and stainless steel studs 400, wherein the center of the top of the upper top plate 100 is provided with a round hole 110, the lower bottom surface of the upper top plate 100 is welded and fixed on the upper top surface of a round tube 310, the middle section of the side surface of the round tube 310 is provided with a through hole 311, the lower bottom surface of the round tube 310 is assembled and welded with the upper part of the lower bottom plate 300, the outer edge surface of the lower bottom plate 300 is welded on the inner side surface of the piston cylinder 200, the piston cylinder 200 is of an unequal cross section, the round tube 310 is sleeved in the piston cylinder 200, the top of the round tube 310 penetrates out of the top of the piston cylinder 200, the lower bottom plate 300 and the stainless steel studs 400 are embedded and formed, the stainless steel studs 400 is arranged in the center of the bottom of the lower bottom plate 300, the middle part of the lower bottom plate 300 is integrally formed by die-casting V-casting of, the inner edge of the circular ring surface is in transitional connection with the upper end of the V-shaped conical surface through two non-concentric large arcs, and the outer edge of the circular disc surface is in transitional connection with the lower end of the V-shaped conical surface through two non-concentric large arcs; according to the piston assembly, the lower base plate 300 and the stainless steel stud 400 are embedded and die-cast, the outer part of the lower base plate is integrally wrapped by aluminum, air leakage is avoided, welding and welding deformation are reduced, the bearing performance of the lower base plate 300 is effectively improved, stress concentration of the lower base plate 300 can be avoided in a large impact process, cracks of the lower base plate 300 are avoided, the service life of the piston assembly is effectively prolonged, and the weight of the piston assembly can be reduced by 55% by adopting the structure, so that the piston assembly is light and handy.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite lightweight piston structure in an air suspension system, comprising an upper top plate (100), a piston cylinder (200), a lower bottom plate (300) and a stainless steel stud (400), characterized in that: the upper A circular hole (110) is opened in the center of the top of the top plate (100), the lower bottom surface of the upper top plate (100) is welded and fixed to the upper top surface of the circular tube (310), and the lower bottom surface of the circular tube (310) is connected to the lower The upper part of the bottom plate (300) is assembled and welded, the outer surface of the lower bottom plate (300) is welded on the inner surface of the piston cylinder (200), the circular tube (310) is sleeved in the piston cylinder (200), and the circular tube The top of (310) penetrates the top of the piston cylinder (200), the lower bottom plate (300) and the stainless steel stud (400) are inlaid and die-cast, and the stainless steel stud (400) is arranged in the bottom center of the lower bottom plate (300).

2. A composite lightweight piston structure in an air suspension system according to claim 1, characterized in that: the lower bottom plate (300) comprises a disc surface and a torus surface that are parallel to each other, and the circular The disk surface and the torus are connected by a V-shaped conical surface of unequal cross-section, and the inner edge of the torus and the upper end of the V-shaped conical surface are connected by two non-concentric circular arcs. The outer edge and the lower end of the V-shaped conical surface are connected by two non-concentric circular arcs.

3 . The composite lightweight piston structure in an air suspension system according to claim 1 , wherein a through hole ( 311 ) is formed in the middle section of the side surface of the circular tube ( 310 ). 4 .

4. The composite lightweight piston structure in an air suspension system according to claim 1, characterized in that: a V-shaped cylinder is integrally die-casted in the middle of the lower bottom plate (300).

5 . The composite lightweight piston structure in an air suspension system according to claim 1 , wherein the piston cylinder ( 200 ) is a cylindrical surface with unequal cross-section. 6 .