CN102785547A

CN102785547A - Rear torsion beam of automobile

Info

Publication number: CN102785547A
Application number: CN2012103097368A
Authority: CN
Inventors: 王�忠; 符新; 符星; 苏业丰; 梁栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2012-11-21

Abstract

A rear torsion beam of an automobile belongs to a driving system of the automobile and comprises a beam body, a corbel assembly, a stabilizer bar, a resonance block and a resonance block limiting base. The beam body is in an omega type and has the advantages of being simple and easy in punch forming, convenient to be installed and welded with the corbel assembly, and not easy to generate defects such as deformation; the resonance block is provided with an opening; and the resonance block limiting base is added under the resonance block to prevent the performance of the rear torsion beam from being influenced by the vibration of the resonance block driven by the twist of the stabilizer bar during a driving process. A fracture zone of a blanking side of the beam is not required for grinding and polishing during a manufacturing process, not only the labor intensity of field operators and the production cost are reduced and the performance stability of the rear torsion beam, but also qualitative change of materials of the resonance block under high temperature effect of an electrophoresis chamber is avoided, and influence on the performance of the rear torsion beam is avoided.

Description

Torsion crossbeam behind a kind of automobile

Technical field

The present invention relates to the running car system, torsion crossbeam behind especially a kind of automobile.

Background technology

Back torsion crossbeam belongs to running car system parts, is that rear overhang mounts and puts a kind of of type, mainly is bearing automobile rear portion load, the bob of balance left and right sides rear wheel, to reduce rocking of vehicle, keep vehicle steadily.

In the car load assembling was arranged, the lining position of back torsion crossbeam was assemblied on the vehicle body, and the drg mounting bracket part of back torsion crossbeam is connected with rear brake and mounting of tyre, and the trailing arm place of back torsion crossbeam is connecting damping spring.When automobile went on the poor road surface of road conditions, back torsion crossbeam can twist action along with the bob of rear wheel up and down, to huge test is afterwards arranged the service life of torsion crossbeam.

Using in the structure, the crossbeam of back torsion crossbeam is to be " U " type shape and side assembly welding at present, and there is the R limit both sides of crossbeam and trailing arm welding, mainly plays to avoid both sides stress concentration to occur and cause the crossbeam both sides effect of fracture to occur.And in actual driving process, because some road conditions is relatively poor, back torsion crossbeam does up and down that the twisting action is excessive, torsion crossbeam inefficacy after so just often causing.In order to address this problem; We research and analyse; Such problem why occurring is owing to there is fault zone on stamping-out limit on the crossbeam; We constantly verify and have formulated final solution to this: on the stamping-out limit of crossbeam, carry out the thickness polishing with sander machine earlier, top fault zone is removed clean; And then on crossbeam two stamping-out limits, carry out grinding and polishing, and on the stamping-out limit, grind the R angle with oilstone.

Need pass through a few procedure polishings with the crossbeam in the structure at present; Can temporarily solve the problem that back torsion crossbeam lost efficacy although it is so; But like this not only increase labor intensity of operating staff and productive costs, and the polishing quality of stability can't guarantee that also production efficiency is also slow; As long as removing a little, the fault zone on crossbeam two stamping-out limits totally all might not cause back torsion crossbeam to lose efficacy.Comprehensive above various reasons need be improved with back torsion beam structure existing.

Summary of the invention

The present invention will solve the shortcoming of above-mentioned prior art; A kind of easy punch forming and easy solder type are provided, and afterwards the crossbeam of torsion beam is " " type (promptly on original stamping-out limit, having increased crimping), opening to the right; Play the service life that prolongs crossbeam greatly, prevent that the back torsion beam lost efficacy.

The present invention solves the technical scheme that its technical matters adopts: one, will be at present with the crossbeam of the back torsion beam in the structure to the right by " U " type opening, change " " type opening into to the right, the torsional strength of deep beam; Two, will with crossbeam and stabilizer rod bonded assembly resonance piece by the opening that changes into of originally remaining silent, and below the resonance piece, increase a resonance piece limit base, thereby prevent that the stabilizer rod twisting drives the vibration of resonance piece and the performance of influence back torsion crossbeam in the driving process.Three, will be at present with the operational path of structure: earlier that resonance is packaged on stabilizer rod, again with stabilizer rod together with the resonance block welding on the torsion crossbeam of back, and then carry out electrophoresis; Change to: first stabilizer rod is welded on the torsion crossbeam of back, carries out electrophoresis again, and then with adorning on the resonance piece resonant piece limit base, has avoided like this owing to the material generation qualitative change under the high temperature action of electrophoresis tank of resonance piece, thus influence back torsion crossbeam performance.

The invention has the beneficial effects as follows: one, the crossbeam of back torsion beam changes " " shape into by being " U ", has the easy advantage of punch forming, and be difficult for to produce defective such as distortion; Two, in the torsion beam assembly assembly welding process of back,, be difficult for producing distortion, be convenient to and trailing arm assembly assembly welding because crossbeam is " " shape; Three, need not carry out sanding and polishing, reduce site operation personnel's labour intensity and productive costs, guarantee the stability of back torsion beam performance the fault zone on crossbeam stamping-out limit.Four, avoided owing to the material generation qualitative change under the high temperature action of electrophoresis tank of resonance piece, thus influence back torsion crossbeam performance.

Description of drawings

Fig. 1 is a three-dimensional model diagram of the present invention.

Fig. 2 is the partial enlarged drawing of front view.

Fig. 3 is a birds-eye view.

Fig. 4 uses structural front view at present.

Fig. 5 is existing partial enlarged drawing with structural front view.

Fig. 6 is the existing structure birds-eye view of using.

The specific embodiment

The Sheet Metal Forming Technology route of crossbeam is formulated: blanking-flange-moulding-integer-punching, accomplish by five road stamping procedures altogether.And crossbeam and each parts branch unit carried out assembly welding, through on the torsion crossbeam stabilizer rod of back, the resonance piece being installed behind the electrophoresis, resonance piece limit base is installed then.

Claims

1. torsion crossbeam behind the automobile is made up of crossbeam, trailing arm assembly, stabilizer rod, resonance piece resonant piece limit base; Especially crossbeam, it is characterized in that: crossbeam is " " type opening to the right, and the resonance piece is opening-like, on installation site behind the resonance, increases to adorn a resonance piece limit base.

2. torsion crossbeam behind the automobile according to claim 1 is characterized in that: will be at present with the crossbeam of the back torsion beam in the structure to the right by " U " type opening, change " " type opening into to the right, the torsional strength of deep beam; To change the opening shape into by original shape of remaining silent with crossbeam and stabilizer rod bonded assembly resonance piece, and below the resonance piece, increase a resonance piece limit base, thereby prevent that the stabilizer rod twisting drives the vibration of resonance piece and the performance of influence back torsion crossbeam in the driving process; The operational path of at present using structure is packaged on stabilizer rod with resonance by elder generation; Again with stabilizer rod together with the resonance block welding on the torsion crossbeam of back, and then carry out electrophoresis, change to: first stabilizer rod is welded on the torsion crossbeam of back; Carry out electrophoresis again; And then, avoided like this, thereby influence back torsion crossbeam performance owing to the material generation qualitative change under the high temperature action of electrophoresis tank of resonance piece with adorning on the resonance piece resonant piece limit base.