CN201769626U

CN201769626U - Connecting structure of automobile driven rear axle shell assembly

Info

Publication number: CN201769626U
Application number: CN201020213735XU
Authority: CN
Inventors: 陈田兵; 黄平辉; 唐思成; 揭钢; 饶剑文
Original assignee: Jiangxi Jiangling Chassis Co Ltd
Current assignee: Jiangxi Jiangling Chassis Co Ltd
Priority date: 2010-06-03
Filing date: 2010-06-03
Publication date: 2011-03-23
Anticipated expiration: 2020-06-03

Abstract

The utility model belongs to the field of structural design of auto parts, and relates to a connecting structure of an automobile driven rear axle shell assembly, which comprises flange heads (7), a steel plate spring seat (8), a shock absorber bracket (9) and a sleeve (10) which are connected, wherein the sleeve (10) is a body of the rear axle shell assembly. The connecting structure is characterized in that: the two flange heads (7) are connected with two ends of the sleeve (10) in a welding way, clearance fit is realized for the radial fit between the flange heads (7) and the sleeve (10), and the fit clearance is 0.05 plus or minus 0.02mm; the axial fit length of the flange heads (7) and the sleeve (10) is one third to one half of the caliber of the sleeve (10); after the flange heads (7) and the sleeve (10) are positioned axially, the shortest distance L between the end face of the sleeve (10) and the end faces of the flange heads (7) is 6 to 10mm; boxing welding is adopted for the welding of the end face of the sleeve (10) and inner bores of the flange heads (7), and weld bead height is 4mm to 5mm. The connecting structure is calculated and analyzed by CAE (Computer Aided Engineering) and verified by a stand test, the CAE calculated result is very approximate to the test value, the stress distribution regularity is consistent to that of the test, and the stand test result conforms to the national QC (Quality Control)/T533-1999 and QC/T534-1999 standards.

Description

A kind of connection structure of automotive driven rear axle housing assembly

Technical field

The utility model belongs to auto parts and components structure design field, relates to a kind of connection structure of automotive driven rear axle housing assembly.

Background technology

In some MPV and even car, its driven rear axle housing assembly often adopts the semi-independent suspension frame structure of torsion beam type.Though the relative front suspension of this version, especially Mike Fu Xunshi suspension is fairly simple, installing and locating on car body is also convenient, but compare with traditional integral type driven rear axle housing assembly, no matter from analyze, design, still in manufacturing, the checking, its complexity is self-evident, and cost is also higher.

Fig. 1 is the semi-independent suspension frame structure of torsion beam type, and its basic structure is made up of bushing pipe 1, torsion bar 2, trailing arm 3, collar head 4, helical spring seat 5, crossbeam 6.Adopt between each part to be welded to connect, the collar head end face has the requirement of positive toe-in, negative camber angle.From Fig. 1, we are not difficult to find out: the parts of shaping such as trailing arm 3, helical spring seat 5 and crossbeam 6 require relatively all higher on oad; Integrally-built design, analysis and checking; The assurance of the positive toe-in of collar head end face, negative camber angle and weld strength.These factors all affect the cost of the semi-independent suspension frame structure of torsion beam type.For in the commercial vehicle/comm..vehicle of shelves on the low side, the pressure of cost just seems and has been even more important.Therefore, the enterprise of the driven rear axle housing assembly of the semi-independent suspension frame structure of China's torsion beam type is also few, and this is that not only its design, validation difficulty are big, the more important thing is to be that it has high input that it is not high to make added value.

Summary of the invention

The purpose of this utility model is to provide a kind of connection structure of automotive driven rear axle housing assembly.

The utility model is achieved in that it comprises collar head, spring perch, shock absorber support and sleeve pipe, collar head, spring perch, shock absorber support are connected with sleeve pipe, sleeve pipe is the body of rear axle housing assembly, the termination, two ends of two collar heads and sleeve pipe is welded to connect, collar head and sleeve pipe radial fit are free-running fit, and tolerance clearance is 0.05 ± 0.02mm; Collar head and quill drive are 1/3～1/2 of sleeve pipe caliber to length of fit; After collar head and the sleeve pipe axial location, box face and collar head end face shortest distance L are 6～10mm; Box face and collar head endoporus adopt boxing welding, weld bead height 4～5mm.

The design's utility model is calculated and the stand test checking through cae analysis, and CAE result of calculation and trial value are very approaching, and stress distribution law is consistent with test, and rig test result meets national QC/T533-1999, QC/T534-1999 standard.

Description of drawings

Fig. 1, the existing semi-independent suspension driven rear axle housing assembly of torsion beam type.

The structural representation of Fig. 2, the utility model embodiment 1.

Collar head 7 and the sleeve pipe 10 welded structure scheme drawings of Fig. 3, the utility model embodiment 1.

Collar head 7 structural representations of Fig. 4, the utility model embodiment 1.

Sleeve pipe 10 structural representations of Fig. 5, the utility model embodiment 1.

The specific embodiment

For the connection structure of same class automotive driven rear axle housing assembly flange 7 with sleeve pipe 10, can specifically implement by the technology that illustrates in the utility model content, can further describe the utility model by the following examples, yet scope of the present utility model is not limited among the following embodiment.The connection structure that is to say collar head 7 and sleeve pipe 10 can be applied in the driven rear axle housing assembly of multiple automobile model of same class driven rear axle housing assembly.

Embodiment 1

It mainly comprises collar head 7, spring perch 8, shock absorber support 9, sleeve pipe 10 etc., collar head 7, spring perch 8, shock absorber support 9 are welded to connect with sleeve pipe 10, two collar heads 7 are welded to connect with the termination, two ends of sleeve pipe 10, and two spring perches 8 and two shock absorber supports 9 are symmetrically welded and connected with the pipe shaft of sleeve pipe 10 respectively; Collar head 7 is provided with the wheel limit bonded assembly connecting device with back axle assembly; Spring perch 8 is provided with the connecting device that is connected with the leaf spring on car load chassis; Shock absorber support 9 is provided with the connecting device with the shock absorber bonded assembly on car load chassis; Sleeve pipe 10 is the body of rear axle housing assembly.

Collar head 7 is a forging, and collar head 7 is connected with the wheel limit of back axle assembly by bolt; Spring perch 8 is a blanked part, is connected by the leaf spring of U-bolt with the car load chassis; Shock absorber support 9 is a blanked part, is connected by the shock absorber of bolt with the car load chassis; Sleeve pipe 10 is a solid drawn pipe, is the body of rear axle housing assembly, plays and supports and the carrying effect.

No. 45 steel of the material selection of collar head 7, sleeve pipe 10, sleeve pipe 10 is the structure solid drawn pipe, collar head 7 is a forging; Collar head 7 is a free-running fit with sleeve pipe 10 radial fit, and tolerance clearance is 0.05 ± 0.02mm, and promptly Φ D-Φ d is 0.03～0.07mm; Collar head 7 is 1/3～1/2 of sleeve pipe 10 calibers with sleeve pipe 10 axial lengths of fit; After collar head 7 and sleeve pipe 10 axial location, sleeve pipe 10 end faces and collar head 7 end face shortest distance L are 6～10mm; Sleeve pipe 10 end faces and collar head 7 endoporus adopt boxing welding, weld bead height 4～5mm; After collar head 7 welded with sleeve pipe 10, collar head 7 end faces and 4 connecting bores were designed to no longer carry out machinework.

Collar head 7 adopts forging, material 45 steel, and whole and its radial hole (Φ D) misalignment of its 4 connecting bores is proof strength, and design has three place's strengthening ribs, and length is about 1/2 Φ d.Collar head 7 process technologies require: the collar head end face is vertical with its radial hole (Φ D), and squareness is 0.08mm, and surface roughness Ra is more than 6.3; Collar head radial hole (Φ D) surface roughness Ra is more than 6.3, and collar head radial hole (Φ D) is a free-running fit with the radial fit of sleeve pipe 10; 4 connecting bores of collar head are benchmark with its radial hole (Φ D) and end face, and the position degree is Φ 0.3mm; Collar head 7 is designed to quality adjustment condition, hardness HB235-277.Φ D is collar head 7 radial hole diameters, and Φ d is sleeve pipe 10 radial axle diameters.

Sleeve pipe 10 adopts solid drawn pipe, material 45 steel, wall thickness 5-6mm.Sleeve pipe 10 process technologies require: sleeve pipe 10 two ends radial axle diameter of phi d are designed to coaxial, and right alignment is Φ 0.15mm; The radial diameter Φ D matching design of radial axle diameter of phi d and collar head 7 is a free-running fit; The Design of length of radial axle diameter of phi d, promptly sleeve pipe 10 is with after collar head 7 cooperates, and sleeve pipe 10 end faces and collar head 7 end face shortest distance L are 6～10mm; Sleeve pipe two ends radial axle surface roughness Ra is more than 6.3.

Spring perch 8 adopts blanked part with shock absorber support 9 grades, and material is Q235.

In other embodiments, according to the connection request on car load chassis, on the pipe shaft of sleeve pipe 10, can also weld the support that needs.

Claims

1. the connection structure of an automotive driven rear axle housing assembly, it comprises collar head (7), spring perch (8), shock absorber support (9) and sleeve pipe (10), collar head (7), spring perch (8), shock absorber support (9) are connected with sleeve pipe (10), sleeve pipe (10) is the body of rear axle housing assembly, it is characterized in that: two collar heads (7) are welded to connect with the termination, two ends of sleeve pipe (10), collar head (7) is a free-running fit with sleeve pipe (10) radial fit, and tolerance clearance is 0.05 ± 0.02mm; Collar head (7) is 1/3～1/2 of sleeve pipe (a 10) caliber with the axial length of fit of sleeve pipe (10); After collar head (7) and sleeve pipe (10) axial location, sleeve pipe (10) end face and collar head (7) end face shortest distance L are 6～10mm; Sleeve pipe (10) end face and collar head (7) endoporus adopt boxing welding, weld bead height 4～5mm.

2. the connection structure of a kind of automotive driven rear axle housing assembly according to claim 1, it is characterized in that: collar head (7) is a forging, is provided with three place's strengthening ribs, and the end face of collar head (7) is vertical with the radial hole (Φ D) of itself, squareness is 0.08mm, and surface roughness Ra is more than 6.3; Collar head (7) radial hole (Φ D) surface roughness Ra is more than 6.3, and 4 connecting bores of collar head (7) are benchmark with its radial hole (Φ D) and end face, and the position degree is Φ 0.3mm; Collar head (7) is a quality adjustment condition, hardness HB235-277; Sleeve pipe (10) adopts solid drawn pipe, and the right alignment of sleeve pipe (10) two ends radial axle diameters (Φ d) is Φ 0.15mm.

3. the connection structure of a kind of automotive driven rear axle housing assembly according to claim 1 and 2 is characterized in that: after collar head (7) and sleeve pipe (10) welding, collar head (7) end face and 4 connecting bores are designed to no longer carry out machinework.

4. the connection structure of a kind of automotive driven rear axle housing assembly according to claim 1 and 2, it is characterized in that: spring perch (8), shock absorber support (9) are welded to connect with sleeve pipe (10), and two spring perches (8) and two shock absorber supports (9) are symmetrically welded and connected with the pipe shaft of sleeve pipe (10) respectively; Collar head (7) is provided with the wheel limit bonded assembly connecting device with back axle assembly; Spring perch (8) is provided with the connecting device that is connected with the leaf spring on car load chassis; Shock absorber support (9) is provided with the connecting device with the shock absorber bonded assembly on car load chassis.

5. the connection structure of a kind of automotive driven rear axle housing assembly according to claim 1 and 2, it is characterized in that: described collar head (7) is connected with the wheel limit of back axle assembly by bolt; Spring perch (8) is a blanked part, is connected by the leaf spring of U-bolt with the car load chassis; Shock absorber support (9) is a blanked part, is connected by the shock absorber of bolt with the car load chassis.

6. the connection structure of a kind of automotive driven rear axle housing assembly according to claim 1 and 2 is characterized in that: according to the connection request on car load chassis, on the pipe shaft of sleeve pipe (10), can also weld the support that needs.