CN211335497U - Sheet-formed high-performance torsion beam - Google Patents
Sheet-formed high-performance torsion beam Download PDFInfo
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- CN211335497U CN211335497U CN201921232664.5U CN201921232664U CN211335497U CN 211335497 U CN211335497 U CN 211335497U CN 201921232664 U CN201921232664 U CN 201921232664U CN 211335497 U CN211335497 U CN 211335497U
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Abstract
The utility model relates to the technical field of torsion beams, in particular to a high-performance torsion beam formed by plate materials, which comprises a cross beam, wherein the cross section of the cross beam is closed; the beam is formed by bending and welding a plate; the cross section of the cross beam is an inverted V-shaped groove, the cross beam comprises an inner waist part positioned on the inner side of the V-shaped groove and an outer waist part positioned on the outer side of the V-shaped groove, the outer waist part comprises a first outer waist part and a second outer waist part, the end surfaces of the first outer waist part and the second outer waist part, which are positioned at the closed end of the V-shaped groove, are arranged oppositely, and the first outer waist part and the second outer waist part are fixed; be equipped with between the outer waist of first outer waist and the second and fix the mechanism in advance, fix the mechanism in advance and include bayonet socket and buckle, the bayonet socket is located first outer waist, and the buckle is located the outer waist of second. By adopting the scheme, the technical problem that the service life of the cross beam is short due to the fact that the single-piece cross beam is easy to fatigue fracture in the prior art can be solved.
Description
Technical Field
The utility model relates to a torsion beam's technical field, concretely relates to fashioned high performance torsion beam of sheet material.
Background
Torsion beam type suspension is a type of automobile rear suspension, and is a technology for balancing up-and-down jumping of left and right wheels through a torsion beam so as to reduce shaking of a vehicle and keep the vehicle stable.
The existing torsion beam is made of a single-piece V-shaped plate to form the beam, so that the overall weight of the torsion beam is reduced, and the torsion beam meets the design requirement of light weight, but the single-piece beam is low in torsion resistance and fatigue fracture resistance, is easy to twist and fracture, so that the service life of the torsion beam is shortened, and the risk coefficient of vehicle running is increased; the closed torsion beam is adopted, so that the anti-fatigue capability of the cross beam can be improved to a certain degree, but the existing closed torsion beam is formed by pressing a pipe, the processing process is complex, the cost of raw materials is high, the quality requirement on the raw materials is high, the cost for verifying the quality of the raw materials is additionally increased, and the overall cost of the torsion beam is greatly improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is providing the fashioned high performance torsion beam of sheet material to the fatigue fracture easily takes place in the single-piece crossbeam among the prior art and leads to the technical problem that crossbeam life is short.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the high-performance torsion beam formed by the plate comprises a cross beam, wherein the cross beam is formed by bending and welding the plate, and the cross section of the cross beam is closed; the cross section of the cross beam is an inverted V-shaped groove, the cross beam comprises an inner waist part positioned on the inner side of the V-shaped groove and an outer waist part positioned on the outer side of the V-shaped groove, the outer waist part comprises a first outer waist part and a second outer waist part, the end surfaces of the first outer waist part and the second outer waist part, which are positioned at the closed end of the V-shaped groove, are arranged oppositely, and the first outer waist part and the second outer waist part are fixed; a pre-fixing mechanism is arranged between the first outer waist part and the second outer waist part.
The principle and the advantages of the scheme are as follows: 1) the cross beam with the closed cross section is adopted, and compared with a single-piece cross beam, the cross beam has higher stability and torsion fracture resistance;
2) according to the scheme, the beam is made of the plate material, compared with the method for making the pipe material, the influence of the incoming material quality of the plate material on the quality of a finished product is small, the plate material is controlled only by the material report, the control is convenient, and the cost for monitoring the incoming material quality is reduced; after heat treatment, the tensile strength and yield strength of the beam formed by the plate are higher, and the service life of the beam is longer compared with that of a beam processed by a tube material; when the plate is used for processing, the utilization rate of the material is higher, and the cost is lower;
3) according to the scheme, through the design of the pre-fixing mechanism, the positions of the first connecting surface and the second connecting surface can be relatively fixed when the plate is punched and shaped, the condition that the width of a gap formed between the first connecting surface and the second connecting surface is increased due to the fact that the plate is deformed again is avoided, the quality of a welding seam formed between the first outer waist and the second outer waist is guaranteed, and the quality of a beam product is guaranteed.
Preferably, as an improvement, the inner waist portion includes a first inner waist portion and a second inner waist portion, the first inner waist portion abuts against the first outer waist portion, and a connecting portion of the first inner waist portion and the first outer waist portion is in smooth transition; the second inner waist part and the second outer waist part are tightly propped against each other, and the connecting part of the second inner waist part and the second outer waist part is in smooth transition; the connecting portion of waist in first interior waist and the second is equipped with to keeping away from the bellied bead of first outer waist direction, and the bead sets up along the length direction of crossbeam.
The smooth transition of the connecting part of the first inner waist part and the first outer waist part can enhance the stability of stress transmission between the first inner waist part and the first outer waist part, avoid the fatigue fracture caused by sudden change of stress condition and prolong the service life of the cross beam; and set up the bead and make the later stage when welding first outer waist and the outer waist of second, can not receive the influence of interior waist.
Preferably, as an improvement, a groove is arranged in the bayonet, and a transverse groove is arranged at the bottom of the groove and is vertical to the groove; the buckle is provided with a clamping column matched with the groove, and the free end of the clamping column is perpendicular to the clamping column and is fixedly provided with a clamping bulge.
After the block post of this scheme was inserted in the recess, lateral sliding made the chucking arch sink in the transverse groove and can realize the pre-fixing to the outer waist of first outer waist and second, avoided the outer waist of second can't keep with the condition of first outer waist parallel and level, and then avoided the outer waist of first outer waist and second before fixed, the outer waist of first outer waist and second takes place the condition of relative slip.
Preferably, as an improvement, a chamfer is arranged at the connecting part of the transverse groove and the groove, and a locking groove arranged in parallel with the groove is also arranged on the transverse groove; the clamping protrusions are connected with marbles in a sliding mode along the length direction of the clamping columns, and return springs are arranged between the marbles and the clamping protrusions.
During the use, when the chucking arch is absorbed in the transverse slot, the marble is impressed in the chucking arch, after the chucking arch got into the transverse slot, when the marble slided the position in locking groove, was popped out under reset spring's effect promptly to the locking of buckle and bayonet socket is fixed has been realized.
Preferably, as an improvement, a supporting spring is fixedly arranged on the cross beam, and the supporting spring is transversely arranged in a V-shaped groove of the cross beam.
The supporting spring of this scheme can provide supporting role for it when deformation appears in the torsion beam, can also pass through the direct contact of spring simultaneously for stress transmission between the waist in first interior waist and the second to improve torsion beam's life, prevent that the instantaneous stress of direct action on the crossbeam from leading to the easy problem of damaging of crossbeam greatly.
Preferably, as an improvement, the inner side of the V-shaped groove is fixedly provided with a wedge-shaped connecting block with a wedge surface attached to the inner wall of the V-shaped groove, and the supporting spring is fixedly connected with the cross beam through the wedge-shaped connecting block.
This scheme can adjust the orientation of the face of connecting of supporting spring, has avoided supporting spring to take place to lead to the serious condition of supporting spring wearing and tearing along the deformation of axis direction.
Preferably, as a modification, the first outer waist portion and the second outer waist portion are fixed by double-wire arc welding.
The double-wire arc welding has the advantages of high welding speed, high welding wire deposition rate and good welding seam quality, can ensure the welding seam quality of the cross beam, and can improve the welding efficiency of the cross beam.
Preferably, as a modification, the cross member is formed such that a gap between end faces of the first outer waist portion and the second outer waist portion is 0.5 mm.
This scheme can guarantee that the solder effectively adheres to, has avoided the too big downside that leads to the solder to leak away from the clearance easily in clearance, and then leads to the not good problem of quality of welding seam.
Preferably, as an improvement, the end part of the V-shaped groove is close to the edge of the corresponding end of the plate, and the depth of the end part of the V-shaped groove is smaller than the depth of the middle position of the V-shaped groove.
The depth of the middle part of the V-shaped groove is deep, so that the overall mass of the cross beam is reduced, the cross beam meets the design of light weight, and when the wheel jumps, the middle part of the cross beam can be twisted, so that the vehicle can keep running stably; meanwhile, the torsional stress of the cross beam is mainly concentrated in the transition region but not in the middle of the cross beam, so that the torsional fracture resistance of the cross beam cannot be reduced due to the deep depth of the middle part of the V-shaped groove; the end depth of the V-shaped groove is reduced, so that the anti-torsion and anti-fracture capacity of the transition area of the cross beam is enhanced, the cross beam meets the lightweight design requirement, and the cross beam has strong anti-torsion and anti-fracture performance.
Preferably, as an improvement, the pre-fixing mechanism includes a bayonet and a buckle, the bayonet is located on the first outer waist portion, and the buckle is located on the second outer waist portion.
This scheme adopts the very ripe bayonet socket of prior art and buckle structure, has reduced processing technology's requirement, also makes the pre-fixing of the outer waist of first outer waist and second more stable.
Drawings
Fig. 1 is a left side sectional view of a cross beam in an embodiment of the sheet metal forming high-performance torsion beam of the present invention, mainly showing a cross-sectional shape of the cross beam.
Fig. 2 is a left side view of a semi-finished product of a middle cross beam according to an embodiment of the present invention, mainly illustrating the positions of the pre-fixing mechanisms on the first outer waist portion and the second outer waist portion.
Fig. 3 is a partially enlarged view of the upper end of the first outer waist portion in fig. 2.
Fig. 4 is a partially enlarged view of the upper end of the second outer waist portion in fig. 2.
Fig. 5 is a cross-sectional view of a molded product of a cross beam in the second embodiment of the present invention.
Fig. 6 is a front view of a cross beam according to a second embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the elastic support comprises a V-shaped groove 1, a first inner waist part 2, a second inner waist part 3, a first outer waist part 4, a second outer waist part 5, a first connecting surface 6, a second connecting surface 7, a bayonet 8, a buckle 9, a marble 10, a welding seam 11, a support spring 15, a left trailing arm 17 and a right trailing arm 18.
Example one
As shown in figure 1: the high-performance torsion beam formed by the plate comprises a cross beam, wherein the cross beam is formed by bending and welding the plate, the cross section of the cross beam is closed, the cross section of the cross beam is an inverted V-shaped groove 1, the cross beam comprises an inner waist part positioned on the inner side of the V-shaped groove 1 and an outer waist part positioned on the outer side of the V-shaped groove 1, the inner waist part comprises a first inner waist part 2 and a second inner waist part 3, the left side of the inner waist part is named as a first inner waist part 2, and the right side of the inner waist part is named as a second inner waist; the transition positions of the first inner waist part 2 and the second inner waist part 3 are bent to form convex ribs protruding downwards, and the convex ribs are arranged along the length direction of the cross beam; the outer waist part comprises a first outer waist part 4 and a second outer waist part 5, the right end face of the first outer waist part 4 is named as a first connecting face 6, the left end face of the second outer waist part 5 is named as a second connecting face 7, the first connecting face 6 and the second connecting face 7 are arranged oppositely, the width of a gap formed between the first connecting face 6 and the second connecting face 7 is 0.5mm, and the first connecting face 6 and the second connecting face 7 are fixed by adopting double-wire arc welding; as shown in fig. 2, a pre-fixing mechanism is provided between the first outer waist portion 4 and the second outer waist portion 5, where two pre-fixing mechanisms are provided between the first outer waist portion 4 and the second outer waist portion 5, the two pre-fixing mechanisms being symmetrical with respect to the longitudinal section of the cross beam; the pre-fixing mechanism comprises a bayonet 8 and a buckle 9, the bayonet 8 is positioned on the first outer waist part 4, the buckle 9 is positioned on the second outer waist part 5, and the positions of the bayonet 8 and the buckle 9 are symmetrical about a perpendicular bisector of the V-shaped groove 1; as shown in fig. 3, a groove is formed in the bayonet 8, a transverse groove is formed in the bottom of the groove, the transverse groove is perpendicular to the groove, the transverse groove is communicated with the groove, the connecting part adopts smooth transition, and a locking groove arranged in parallel with the groove is further formed in the transverse groove; as shown in fig. 4, a clamping column for matching with the groove is welded on the buckle 9, a clamping bulge is fixedly welded at the free end of the clamping column perpendicular to the clamping column, and the clamping bulge can penetrate through the groove to match with the transverse groove; the protruding length direction sliding connection who goes up along the block post of chucking has marble 10, and the protruding length direction who goes up along the block post of chucking has the spout, and marble 10 is close to the bellied one side fixedly connected with guide bar of chucking, and the one end welding that marble 10 was kept away from to the guide bar has reset spring, and reset spring's free end and the protruding welding of chucking.
In the specific implementation: in the forming process of the beam, the semi-finished product shown in fig. 2 needs to be punched, so that two sides of a plate material are bent towards opposite directions to form the shape shown in fig. 1; when punching, the first outer waist part 4 is punched firstly, so that the first outer waist part 4 is bent towards the lower right; then, the second outer waist part 5 is punched, so that the second outer waist part 5 is bent towards the lower left side, meanwhile, the clamping column is inserted into the groove, when the clamping column is inserted into the bottom of the groove, the lower end of the clamping column can be abutted against a fillet at the lower side (the view angle of fig. 3), so that the clamping column moves towards the upper right side, and further, the clamping protrusion is inserted into the transverse groove; when the clamping protrusion is inserted into the transverse groove, the marble can abut against the position of a fillet on the upper side (the view angle in fig. 3) and slide into the clamping protrusion, when the clamping protrusion moves upwards to the position opposite to the locking groove, the marble is outwards popped and clamped into the locking groove under the action of the reset spring, so that the clamping column and the groove are clamped with each other, and the second outer waist part 5 and the first outer waist part 4 are relatively fixed; the condition that relative displacement of the first connecting surface 6 and the second connecting surface 7 causes staggering is avoided in the subsequent processing process, so that the quality of the welding seam 11 is better, the torsion and fracture resistance is stronger, and the service life of the beam is longer. The cross beam can meet the requirements of the torsional rigidity and the fatigue life of the cross beam, the service life of the cross beam is 28.9 ten thousand times in a bench test with the torsional rigidity of 490Nm/deg, the service life of the cross beam is 37.1 ten thousand times in a bench test with the torsional rigidity of 484Nm/deg, and the service life of the controlled torsion beam is 28 ten thousand times in a bench test with the torsional rigidity of 456Nm/deg under the same production condition, so that the cross beam has certain improvement on the fatigue life and better reliability; experimental data comparison shows that metallographic structures of the beam welded after the plate is formed are relatively consistent after heat treatment and are 3-7-grade tempered sorbite, so that the beam has good toughness and plasticity, and high strength, and therefore has good comprehensive mechanical properties; the tensile strength and the yield strength of the beam after heat treatment are higher, and the service life of the beam is longer compared with that of a beam processed by a tube material; the experimental data comparison shows that the cross beam is made of the plate material, compared with the pipe material making, the influence of the incoming material quality of the plate material on the quality of a finished product is small, the plate material is only required to be controlled through a material report, the control is convenient, and the cost for monitoring the incoming material quality is reduced; and the material unit price of the plate material is lower, the material utilization rate is higher, and the overall cost is lower.
Example two
As shown in fig. 5, the difference between the first embodiment and the second embodiment is that a support spring 15 is fixedly welded to a cross beam, specifically, wedge-shaped connection blocks are fixedly welded to the first inner waist portion 2 and the second inner waist portion 3 respectively, one side of the wedge-shaped connection blocks opposite to each other is a vertical plane, the left end of the support spring 15 is welded to a wedge-shaped block on the first inner waist portion 2, and the right end of the support spring 15 is welded to a wedge-shaped block on the second inner waist portion 3. As shown in fig. 6, the cross beam is further fixedly welded with trailing arms, the trailing arms include a left trailing arm 17 and a right trailing arm 18, the left trailing arm 17 is welded with the left end of the cross beam, the right trailing arm 18 is welded with the right end of the cross beam, and the left trailing arm 17 and the right trailing arm 18 are mirror-symmetrical. The structure of the left trailing arm 17 will be described below by taking the left trailing arm 17 as an example, the cross section of the left trailing arm 17 is a V-shaped structure, the V-shaped opening of the left trailing arm 17 faces the cross member, and the upper and lower ends of the left trailing arm 17 are bent in a direction away from the cross member.
The supporting spring 15 of this scheme can provide supporting role for it when deformation appears in the torsion beam, can also pass through the direct contact of spring simultaneously for stress transmission between waist 2 in the first and the second 3 waist, thereby improve the life of torsion beam, prevent that the instantaneous stress of direct action on the crossbeam from leading to the problem of the easy damage of crossbeam too big.
The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. Fashioned high performance torsion beam of sheet material, including the crossbeam, the cross-section of crossbeam is closed, its characterized in that: the cross beam is formed by bending and welding a plate; the cross section of the cross beam is an inverted V-shaped groove, the cross beam comprises an inner waist part positioned on the inner side of the V-shaped groove and an outer waist part positioned on the outer side of the V-shaped groove, the outer waist part comprises a first outer waist part and a second outer waist part, the end surfaces of the first outer waist part and the second outer waist part, which are positioned at the closed end of the V-shaped groove, are arranged oppositely, and the first outer waist part and the second outer waist part are fixed; be equipped with between the outer waist of first outer waist and the second and fix the mechanism in advance, fix the mechanism in advance and include bayonet socket and buckle, the bayonet socket is located first outer waist, and the buckle is located the outer waist of second.
2. The sheet-formed high performance torsion beam according to claim 1, wherein: the inner waist part comprises a first inner waist part and a second inner waist part, the first inner waist part is tightly propped against the first outer waist part, and the connecting part of the first inner waist part and the first outer waist part is in smooth transition; the second inner waist part and the second outer waist part are tightly propped against each other, and the connecting part of the second inner waist part and the second outer waist part is in smooth transition; the connecting portion of waist in first interior waist and the second is equipped with to keeping away from the bellied bead of first outer waist direction, and the bead sets up along the length direction of crossbeam.
3. The sheet-formed high performance torsion beam according to claim 1, wherein: a groove is arranged in the bayonet, and a transverse groove is arranged at the bottom of the groove and is vertical to the groove; the buckle is provided with a clamping column matched with the groove, and the free end of the clamping column is perpendicular to the clamping column and is fixedly provided with a clamping bulge.
4. The sheet-formed high performance torsion beam according to claim 3, wherein: a chamfer is arranged at the connecting part of the transverse groove and the groove, and a locking groove arranged in parallel with the groove is also arranged on the transverse groove; the clamping protrusions are connected with marbles in a sliding mode along the length direction of the clamping columns, and return springs are arranged between the marbles and the clamping protrusions.
5. The sheet-formed high performance torsion beam according to claim 1, wherein: and a supporting spring is fixedly arranged on the cross beam and transversely arranged in the V-shaped groove of the cross beam.
6. The sheet-formed high performance torsion beam according to claim 5, wherein: the inner side of the V-shaped groove is fixedly provided with a wedge-shaped connecting block with a wedge surface attached to the inner wall of the V-shaped groove, and the supporting spring is fixedly connected with the cross beam through the wedge-shaped connecting block.
7. The sheet-formed high performance torsion beam according to claim 1, wherein: the first outer waist part and the second outer waist part are fixed by adopting double-wire arc welding.
8. The sheet-formed high performance torsion beam according to claim 7, wherein: after the crossbeam is formed, the gap between the end surfaces of the first outer waist part and the second outer waist part is 0.5 mm.
9. The sheet-formed high performance torsion beam according to claim 1, wherein: the end part of the V-shaped groove is close to the edge of the corresponding end of the plate, and the depth of the end part of the V-shaped groove is smaller than that of the middle position of the V-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921232664.5U CN211335497U (en) | 2019-07-31 | 2019-07-31 | Sheet-formed high-performance torsion beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921232664.5U CN211335497U (en) | 2019-07-31 | 2019-07-31 | Sheet-formed high-performance torsion beam |
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| Publication Number | Publication Date |
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| CN211335497U true CN211335497U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921232664.5U Active CN211335497U (en) | 2019-07-31 | 2019-07-31 | Sheet-formed high-performance torsion beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315924A (en) * | 2019-07-31 | 2019-10-11 | 天人汽车底盘（芜湖）股份有限公司 | The high-performance torsion beam of plate shaping |
-
2019
- 2019-07-31 CN CN201921232664.5U patent/CN211335497U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315924A (en) * | 2019-07-31 | 2019-10-11 | 天人汽车底盘（芜湖）股份有限公司 | The high-performance torsion beam of plate shaping |
| CN110315924B (en) * | 2019-07-31 | 2024-08-27 | 天人汽车底盘（芜湖）股份有限公司 | High-performance torsion beam formed by plate |
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