CN216468080U - Front reinforcing structure of integral cold-bending longitudinal beam - Google Patents
Front reinforcing structure of integral cold-bending longitudinal beam Download PDFInfo
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- CN216468080U CN216468080U CN202122829770.5U CN202122829770U CN216468080U CN 216468080 U CN216468080 U CN 216468080U CN 202122829770 U CN202122829770 U CN 202122829770U CN 216468080 U CN216468080 U CN 216468080U
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Abstract
A front reinforcing structure of an integral cold-bending longitudinal beam belongs to the technical field of special vehicles, and is formed by connecting and installing a C-shaped reinforcing piece on the top surface of the front part of the cold-bending longitudinal beam through bolts or rivets; according to the utility model, on the basis of the Z-shaped cold-bending longitudinal beam, the longitudinal beam top surface reinforcing corner piece is arranged, but the length of the reinforcing corner piece is not directly equal to that of the longitudinal beam, and the reinforcing corner piece is broken at the variable cross section transition part of the longitudinal beam, namely, the front top surface of the longitudinal beam is not provided with the reinforcing corner piece, and then an additional C-shaped reinforcing piece is additionally arranged at the front part of the longitudinal beam, so that the strength and the bearing capacity of the reinforcing corner piece are higher than those of a direct integrated reinforcing corner piece; the structure parcel of "C type" not only plays the effect of protection longeron top surface at the anterior top surface of "Z type" clod wash longeron, still makes reinforcement face and longeron top surface form a bilayer structure, and is higher than prior art's individual layer structure intensity, and the bearing capacity is bigger, and then can reduce the anterior section thickness of longeron, reduces automobile body and goods focus, improves transportation steadily and security.
Description
Technical Field
The utility model belongs to the technical field of special vehicles, and particularly relates to a front reinforcing structure of an integral cold-bending longitudinal beam.
Background
The requirements on vehicle-mounted light weight and product quality are higher and higher, the riveting type semitrailer comes along with transportation, the longitudinal beam of the riveting type semitrailer is formed by integral cold bending, and the integral section of the longitudinal beam is C-shaped or Z-shaped. In order to take account of the height of the tractor tray and the height of the cargo plane, the longitudinal members of a semitrailer are generally considerably lower in height at the front than at the rear. And the lower the height of the front section, the lower the height of the cargo carrying plane, the lower the center of gravity of the cargo, and the better the driving safety. However, since the front side member is insufficient in strength due to an excessively low cross-sectional height and needs to be reinforced at the front, it is necessary to develop a structure having a higher strength to reinforce the front portion of the side member and to raise the load bearing force of the entire side member and lower the height of the center of gravity of the cargo-carrying plane.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems that the front part of the cold-bending longitudinal beam in the prior art is low in strength and affects the service performance of the whole longitudinal beam, the utility model provides a reinforcing structure for the front part of the cold-bending longitudinal beam, and the front part of the cold-bending longitudinal beam is additionally connected with a C-shaped reinforcing structure, so that the bearing capacity of the front part can be greatly improved, the service performance of the whole cold-bending longitudinal beam is improved, and the service life is prolonged.
The specific technical scheme is as follows:
a front reinforcing structure of an integral cold-bending longitudinal beam is formed by installing a reinforcing part 2 on the top surface of the front part of a cold-bending longitudinal beam 1;
the top surface of the front part of the cold-bending longitudinal beam 1 is lower than the top surface of the middle part, a transition area forms a transition surface 1.1, and the transition surface 1.1 is a smooth transition front part top surface and a middle part top surface with an inclined surface;
n uniformly arranged installation through holes I2.1 are longitudinally formed in the surface of the reinforcing piece 2; the top surface of the front part of the cold-bending longitudinal beam 1 is longitudinally provided with N top surface through holes I1.2 corresponding to the mounting through holes I2.1; the mounting through hole I2.1 and the top surface through hole I1.2 are fixedly connected through a bolt or a rivet;
the tail part of the reinforcing piece 2 is provided with two mounting through holes II 2.2; two top surface through holes II 1.3 corresponding to the mounting through holes II 2.2 are arranged at the tail part of the top surface of the front part of the cold bending longitudinal beam 1; the mounting through hole II 2.2 and the top surface through hole II 1.3 are fixedly connected through bolts or rivets and are used for absorbing the variable load of the transition region;
in the technical scheme, after the reinforcing part 2 is installed on the cold-bending longitudinal beam 1, the top surface of the reinforcing part 2 is flush with the top surface of the middle part of the cold-bending longitudinal beam 1;
in the technical scheme, the top surface of the middle area and the top surface of the transition area of the cold-bending longitudinal beam 1 are provided with a reinforcing corner piece 3 in parallel, the front part of the reinforcing corner piece 3 is partially overlapped with the tail area of the reinforcing piece 2, and the overlapped part is provided with two connecting through holes which are connected and fixed through bolts or rivets;
in the technical scheme, the side surface of the reinforcing corner piece 3 is fixedly connected with the side surface of the cold-bending longitudinal beam 1 through a bolt or a rivet;
in the technical scheme, the section of the cold-bending longitudinal beam 1 is Z-shaped;
in the technical scheme, the section of the reinforcing part 2 is C-shaped, and the top surface of the front part of the cold-bending longitudinal beam 1 and the front part of the reinforcing corner part 3 are semi-wrapped downwards;
in the technical scheme, the inner diameter width of the reinforcing piece 2 is more than or equal to the width of the top surface of the front part of the cold-bending longitudinal beam 1 plus the width of the top surface of the reinforcing corner piece 3;
in the technical scheme, the mounting through hole I2.1 and the mounting through hole II 2.2 are both upper surface sunken through holes formed by die stamping, and the sunken through holes enable a connected bolt head or a connected rivet head not to protrude out of the upper surface of the reinforcement 2;
in the technical scheme, the diameters of the mounting through holes I2.1 and II 2.2 are 1.5-3 times of the thickness of the cold-bending longitudinal beam;
in the above technical solution, the plate thickness of the reinforcement 2 and the recessed height of the recessed through hole of the reinforcement 2 are equal to the height difference between the front top surface and the middle top surface of the cold-formed longitudinal beam 1;
in the technical scheme, the reinforcing piece 2 is also provided with a plurality of process holes 2.3;
in the technical scheme, the front reinforcing structure of the integral cold-bending longitudinal beam reduces the stress level of the integral cold-bending longitudinal beam to 220 MPa.
Compared with the prior art, the front reinforcing structure of the integral cold-bending longitudinal beam has the beneficial effects that:
firstly, on the basis of a Z-shaped cold-bending longitudinal beam, a longitudinal beam top surface reinforcing corner piece is arranged, but the length of the reinforcing corner piece is not directly equal to that of the longitudinal beam, the reinforcing corner piece is broken at a variable cross section transition position of the longitudinal beam, namely, the top surface of the front part of the longitudinal beam is not provided with the reinforcing corner piece, then an additional C-shaped reinforcing piece is additionally arranged at the front part of the longitudinal beam, and the additional C-shaped reinforcing piece is higher in strength and bearing capacity than the direct integrated reinforcing corner piece because the structure of the C-shaped reinforcing piece is higher than the strength of a plane structure; in addition, "C type" structure parcel just makes reinforcement face and longeron top surface form a bilayer structure at the anterior top surface of "Z type" clod wash longeron, and single-layer structure intensity is higher than prior art, and the bearing capacity is bigger, and then can reduce the anterior section thickness of longeron, reduces automobile body and goods focus, improves transportation steadily and security.
The thickness of the reinforcing part designed by the utility model is equal to the height difference between the front top surface and the middle top surface of the cold-bending longitudinal beam, namely after the reinforcing part is installed, the reinforcing part can be ensured not to be protruded out of the height of the whole top surface of the cold-bending longitudinal beam, so that the height of the whole longitudinal beam can be ensured not to be increased by the additional reinforcing part, and the gravity center of the whole vehicle body and goods can be ensured not to be raised.
Thirdly, the reinforcing corner fitting is connected with the reinforcing part, and a part of the joint is overlapped, so that the connection strength of the reinforcing part can be enhanced, and the variable load of a transition area can be absorbed; and has aesthetic properties.
Fourthly, the reinforcing corner piece is provided with a fabrication hole which is a wrench space reserved for installing other parts; and does not interfere with the installation of other parts.
Fifthly, the mounting through hole I2.1 and the mounting through hole II 2.2 are designed to be upper surface concave type through holes formed by die stamping, and the connected bolt head or rivet head is not protruded out of the upper surface of the reinforcing part 2 due to the depression, so that the upper surface of the whole longitudinal beam is smooth, and the suitability of the whole mounting is not influenced.
Sixthly, designing 3/5 that the diameters of the mounting through hole I2.1 and the mounting through hole II 2.2 are smaller than the width of the reinforcing piece; the design of the aperture size can ensure that the strength of the reinforcing piece is not influenced when the reinforcing piece is firmly installed.
And seventhly, the reinforced corner piece is arranged on the inner side of the top surface of the middle area of the integral cold-bending longitudinal beam and matched with the front reinforced piece, so that the strength of the integral cold-bending longitudinal beam can be greatly improved, and the service life of the integral cold-bending longitudinal beam is prolonged. In addition, the reinforcing part and the reinforcing corner part are additional parts, so that the maintenance and the replacement are convenient, and particularly, the reinforcing part of the C-shaped wrapping structure has a protection effect on the front part of the cold bending longitudinal beam, so that the front part of the cold bending longitudinal beam is not damaged.
In conclusion, the reinforcing structure is used for reinforcing the front part of the riveting type integral cold-bending longitudinal beam, has simple structure, light weight and low production cost, meets the vehicle bearing requirement on strength, and can reduce the center of gravity of the loaded goods of the vehicle; through CAE simulation, the stress level of the whole cold-bending longitudinal beam can be reduced to 220MPa from 360MPa by the aid of the reinforcing structure, and the bearing performance of a vehicle is improved.
Drawings
FIG. 1 is a perspective view of a front reinforcing structure of an integral cold-formed stringer according to the present invention;
FIG. 2 is a schematic view of a front reinforcing structure of an integral cold-formed stringer of the present invention prior to installation of a reinforcing member;
FIG. 3 is a schematic view of a reinforcement for the front reinforcing structure of an integral cold-formed stringer of the present invention;
FIG. 4 is a front elevation view of a front reinforcing structure of an integral cold-formed stringer of the present invention;
FIG. 5 is a right side view of section A-A of FIG. 4;
FIG. 6 is an enlarged view of the transition surface 1.3 portion of the front reinforcing structure of an integral cold-formed stringer according to the present invention;
FIG. 7 is a cloud chart of fully loaded static stress when no reinforcing member is installed in the front reinforcing structure of the integral cold-bent longitudinal beam in the embodiment 1 of the utility model;
FIG. 8 is a cloud of fully loaded static stresses for a front reinforcing structure of an integral cold-bent longitudinal beam according to example 1 of the present invention;
in FIGS. 1-6: 1-cold-bent longitudinal beam, 1.1-transition surface, 1.2-top surface through hole I, 1.3-top surface through hole II, 2-reinforcing piece, 2.1-mounting through hole I, 2.2-mounting through hole II, 2.3-fabrication hole and 3-reinforcing corner piece.
Detailed Description
The utility model will be further described with reference to specific embodiments and figures 1 to 8, but the utility model is not limited to these embodiments.
Example 1
In the embodiment, a longitudinal beam structure is manufactured for a certain truck, and the length of the longitudinal beam is 17.5 meters.
A front reinforcing structure of an integral cold-bending longitudinal beam is disclosed, as shown in figures 1-6, and is formed by installing a reinforcing part 2 on the top surface of the front part of a cold-bending longitudinal beam 1;
the top surface of the front part of the cold-bending longitudinal beam 1 is lower than the top surface of the middle part, a transition area forms a transition surface 1.1, and the transition surface 1.1 is a smooth transition front part top surface and a middle part top surface with an inclined surface;
n uniformly arranged installation through holes I2.1 are longitudinally formed in the surface of the reinforcing piece 2; the top surface of the front part of the cold-bending longitudinal beam 1 is longitudinally provided with N top surface through holes I1.2 corresponding to the mounting through holes I2.1; the mounting through hole I2.1 and the top surface through hole I1.2 are fixedly connected through a bolt or a rivet;
the tail part of the reinforcing piece 2 is provided with two mounting through holes II 2.2; two top surface through holes II 1.3 corresponding to the mounting through holes II 2.2 are arranged at the tail part of the top surface of the front part of the cold bending longitudinal beam 1; the mounting through hole II 2.2 and the top surface through hole II 1.3 are fixedly connected through bolts or rivets and are used for absorbing the variable load of the transition region;
after the reinforcing piece 2 is installed on the cold-bending longitudinal beam 1, the top surface of the reinforcing piece 2 is flush with the top surface of the middle part of the cold-bending longitudinal beam 1;
the top surface of the middle area and the top surface of the transition area of the cold-bending longitudinal beam 1 are provided with a reinforcing corner piece 3 in parallel, the front part of the reinforcing corner piece 3 is partially overlapped with the tail area of the reinforcing piece 2, and the overlapped part is provided with two connecting through holes which are connected and fixed through bolts or rivets;
the side surface of the reinforcing corner piece 3 is fixedly connected with the side surface of the cold-bending longitudinal beam 1 through a bolt or a rivet;
the section of the cold bending longitudinal beam 1 is Z-shaped;
the section of the reinforcing part 2 is C-shaped, and the top surface of the front part of the cold-bending longitudinal beam 1 and the front part of the reinforcing corner part 3 are semi-wrapped downwards;
the inner diameter width of the reinforcing piece 2 is equal to the width of the top surface of the front part of the cold-bending longitudinal beam 1 plus the width of the top surface of the reinforcing corner piece 3;
the mounting through hole I2.1 and the mounting through hole II 2.2 are both concave through holes with upper surfaces formed by stamping through a die, and the concave through holes enable connecting bolt heads or rivet heads not to protrude out of the upper surface of the reinforcement 2;
the diameters of the mounting through holes I2.1 and the mounting through holes II 2.2 are 2 times of the thickness of the cold-bending longitudinal beam;
the thickness of the reinforcing part 2 and the recessed height of the recessed through hole of the reinforcing part 2 are equal to the height difference between the top surface of the front part and the top surface of the middle part of the cold-bending longitudinal beam 1;
the reinforcing member 2 of the embodiment is also provided with 4 fabrication holes 2.3; the width of the reinforcing member 2 of the present embodiment is 120mm, and the plate thickness of the reinforcing member 2 is 6 mm;
the front reinforcing structure of the integral cold-bending longitudinal beam prepared in the embodiment is subjected to CAE simulation, and is shown in FIGS. 7-8: the stress level of the integral cold-bending longitudinal beam before the reinforcing piece is not arranged is 360 MPa; the stress level of the integral cold-bending longitudinal beam after the reinforcing piece is arranged is 220MPa, so that the bearing performance of the vehicle is greatly improved; compared with the existing longitudinal beam without the reinforcing part, the front part of the cold bending longitudinal beam can be reduced by 20%, and the effect is good after trial use for 2 months.
Example 2
In the embodiment, a longitudinal beam structure is manufactured for a certain truck, and the length of the longitudinal beam is 13 meters.
A front reinforcing structure of an integral cold-bending longitudinal beam is disclosed, as shown in figures 1-6, and is formed by installing a reinforcing part 2 on the top surface of the front part of a cold-bending longitudinal beam 1;
the top surface of the front part of the cold-bending longitudinal beam 1 is lower than the top surface of the middle part, a transition area forms a transition surface 1.1, and the transition surface 1.1 is a smooth transition front part top surface and a middle part top surface with an inclined surface;
n uniformly arranged installation through holes I2.1 are longitudinally formed in the surface of the reinforcing piece 2; the top surface of the front part of the cold-bending longitudinal beam 1 is longitudinally provided with N top surface through holes I1.2 corresponding to the mounting through holes I2.1; the mounting through hole I2.1 and the top surface through hole I1.2 are fixedly connected through a bolt or a rivet;
the tail part of the reinforcing piece 2 is provided with two mounting through holes II 2.2; two top surface through holes II 1.3 corresponding to the mounting through holes II 2.2 are arranged at the tail part of the top surface of the front part of the cold bending longitudinal beam 1; the mounting through hole II 2.2 and the top surface through hole II 1.3 are fixedly connected through bolts or rivets and are used for absorbing the variable load of the transition region;
after the reinforcing piece 2 is installed on the cold-bending longitudinal beam 1, the top surface of the reinforcing piece 2 is flush with the top surface of the middle part of the cold-bending longitudinal beam 1;
the top surface of the middle area and the top surface of the transition area of the cold-bending longitudinal beam 1 are provided with a reinforcing corner piece 3 in parallel, the front part of the reinforcing corner piece 3 is partially overlapped with the tail area of the reinforcing piece 2, and the overlapped part is provided with two connecting through holes which are connected and fixed through bolts or rivets;
the side surface of the reinforcing corner piece 3 is fixedly connected with the side surface of the cold-bending longitudinal beam 1 through a bolt or a rivet;
the section of the cold bending longitudinal beam 1 is Z-shaped;
the section of the reinforcing part 2 is C-shaped, and the top surface of the front part of the cold-bending longitudinal beam 1 and the front part of the reinforcing corner part 3 are semi-wrapped downwards;
the inner diameter width of the reinforcing piece 2 is larger than the width of the top surface of the front part of the cold-bending longitudinal beam 1 and the width of the top surface of the reinforcing corner piece 3;
the mounting through hole I2.1 and the mounting through hole II 2.2 are both concave through holes with upper surfaces formed by stamping through a die, and the concave through holes enable connecting bolt heads or rivet heads not to protrude out of the upper surface of the reinforcement 2;
the diameters of the mounting through holes I2.1 and the mounting through holes II 2.2 are 1.5 times of the thickness of the cold-bending longitudinal beam;
the thickness of the reinforcing part 2 and the recessed height of the recessed through hole of the reinforcing part 2 are equal to the height difference between the top surface of the front part and the top surface of the middle part of the cold-bending longitudinal beam 1;
the reinforcing member 2 of the embodiment is also provided with 4 fabrication holes 2.3; the width of the reinforcing member 2 of the present embodiment is 100mm, and the plate thickness of the reinforcing member 2 is 5 mm;
compared with the existing longitudinal beam without the reinforcing part, the front reinforcing structure of the integral cold-bending longitudinal beam prepared by the embodiment can reduce the front thickness of the cold-bending longitudinal beam by 20%, and has a good effect after trial use for 3 months.
Example 3
In the embodiment, a longitudinal beam structure is manufactured for a certain truck, and the length of the longitudinal beam is 15 meters.
A front reinforcing structure of an integral cold-bending longitudinal beam is disclosed, as shown in figures 1-6, and is formed by installing a reinforcing part 2 on the top surface of the front part of a cold-bending longitudinal beam 1;
the top surface of the front part of the cold-bending longitudinal beam 1 is lower than the top surface of the middle part, a transition area forms a transition surface 1.1, and the transition surface 1.1 is a smooth transition front part top surface and a middle part top surface with an inclined surface;
n uniformly arranged installation through holes I2.1 are longitudinally formed in the surface of the reinforcing piece 2; the top surface of the front part of the cold-bending longitudinal beam 1 is longitudinally provided with N top surface through holes I1.2 corresponding to the mounting through holes I2.1; the mounting through hole I2.1 and the top surface through hole I1.2 are fixedly connected through a bolt or a rivet;
the tail part of the reinforcing piece 2 is provided with two mounting through holes II 2.2; two top surface through holes II 1.3 corresponding to the mounting through holes II 2.2 are arranged at the tail part of the top surface of the front part of the cold bending longitudinal beam 1; the mounting through hole II 2.2 and the top surface through hole II 1.3 are fixedly connected through bolts or rivets and are used for absorbing the variable load of the transition region;
after the reinforcing piece 2 is installed on the cold-bending longitudinal beam 1, the top surface of the reinforcing piece 2 is flush with the top surface of the middle part of the cold-bending longitudinal beam 1;
the top surface of the middle area and the top surface of the transition area of the cold-bending longitudinal beam 1 are provided with a reinforcing corner piece 3 in parallel, the front part of the reinforcing corner piece 3 is partially overlapped with the tail area of the reinforcing piece 2, and the overlapped part is provided with two connecting through holes which are connected and fixed through bolts or rivets;
the side surface of the reinforcing corner piece 3 is fixedly connected with the side surface of the cold-bending longitudinal beam 1 through a bolt or a rivet;
the section of the cold bending longitudinal beam 1 is Z-shaped;
the section of the reinforcing part 2 is C-shaped, and the top surface of the front part of the cold-bending longitudinal beam 1 and the front part of the reinforcing corner part 3 are semi-wrapped downwards;
the inner diameter width of the reinforcing piece 2 is larger than the width of the top surface of the front part of the cold-bending longitudinal beam 1 and the width of the top surface of the reinforcing corner piece 3;
the mounting through hole I2.1 and the mounting through hole II 2.2 are both concave through holes with upper surfaces formed by stamping through a die, and the concave through holes enable connecting bolt heads or rivet heads not to protrude out of the upper surface of the reinforcement 2;
the diameters of the mounting through holes I2.1 and the mounting through holes II 2.2 are 3 times of the thickness of the cold-bending longitudinal beam;
the thickness of the reinforcing part 2 and the recessed height of the recessed through hole of the reinforcing part 2 are equal to the height difference between the top surface of the front part and the top surface of the middle part of the cold-bending longitudinal beam 1;
the reinforcing member 2 of the embodiment is also provided with 4 fabrication holes 2.3; the width of the reinforcing member 2 of the present embodiment is 100mm, and the plate thickness of the reinforcing member 2 is 4 mm;
compared with the existing longitudinal beam without the reinforcing part, the front reinforcing structure of the integral cold-bending longitudinal beam prepared by the embodiment can reduce the front thickness of the cold-bending longitudinal beam by 20%, and has a good effect after trial use for 3 months.
Claims (10)
1. A front reinforcing structure of an integral cold-bending longitudinal beam is characterized in that a reinforcing piece (2) is arranged on the top surface of the front part of a cold-bending longitudinal beam (1);
the top surface of the front part of the cold-bending longitudinal beam (1) is lower than the top surface of the middle part, a transition surface (1.1) is formed in a transition area, and the transition surface (1.1) is an inclined surface which is gently transited from the top surface of the front part to the top surface of the middle part;
n mounting through holes I (2.1) which are uniformly arranged are formed in the surface of the reinforcing piece (2) along the longitudinal direction; the top surface of the front part of the cold-bending longitudinal beam (1) is longitudinally provided with N top surface through holes I (1.2) corresponding to the mounting through holes I (2.1); the mounting through hole I (2.1) and the top surface through hole I (1.2) are fixedly connected in a penetrating way through a bolt or a rivet;
the tail part of the reinforcing piece (2) is provided with two mounting through holes II (2.2); two top surface through holes II (1.3) corresponding to the mounting through holes II (2.2) are arranged at the tail part of the top surface of the front part of the cold bending longitudinal beam (1); and the mounting through hole II (2.2) and the top surface through hole II (1.3) are fixedly connected through bolts or rivets in a penetrating way and are used for absorbing the variable load of the transition region.
2. A front reinforcing structure of an integral cold-formed longitudinal beam as claimed in claim 1, characterized in that after the cold-formed longitudinal beam (1) is provided with the reinforcing member (2), the top surface of the reinforcing member (2) is flush with the top surface of the middle part of the cold-formed longitudinal beam (1).
3. The front reinforcing structure of the integral cold-bending longitudinal beam as claimed in claim 1, wherein the top surface of the middle area and the top surface of the transition area of the cold-bending longitudinal beam (1) are provided with reinforcing corner pieces (3) in parallel, the front parts of the reinforcing corner pieces (3) are partially overlapped with the tail area of the reinforcing piece (2), and the overlapped parts are provided with two connecting through holes and are connected and fixed through bolts or rivets.
4. A front reinforcing structure of an integral cold-formed longitudinal beam as claimed in claim 3, wherein the side face of the reinforcing corner piece (3) is fixedly connected with the side face of the cold-formed longitudinal beam (1) by bolts or rivets.
5. Front reinforcement structure for integral cold-formed stringers, according to claim 1, characterised in that the cold-formed stringer (1) is "Z-shaped" in cross-section.
6. A front reinforcing structure of an integral cold-bent longitudinal beam as claimed in claim 1 or 3, wherein the cross section of the reinforcing member (2) is "C-shaped", and the front top surface of the cold-bent longitudinal beam (1) and the front part of the reinforcing corner member (3) are half-wrapped downwards; the inner diameter width of the reinforcing piece (2) is more than or equal to the width of the top surface of the front part of the cold-bending longitudinal beam (1) and the width of the top surface of the reinforcing corner piece (3).
7. The front reinforcing structure of the integral cold-bent longitudinal beam as claimed in claim 1, wherein the mounting through hole I (2.1) and the mounting through hole II (2.2) are both upper surface concave type through holes formed by die stamping, and the concave type through holes enable a connecting bolt head or a connecting rivet head not to protrude out of the upper surface of the reinforcing member (2); the diameters of the mounting through holes I (2.1) and the mounting through holes II (2.2) are 1.5-3 times of the thickness of the cold-bending longitudinal beam.
8. Front reinforcement structure for integral cold-formed stringers according to claim 7, characterized in that the thickness of the plate of the reinforcement (2) plus the height of the recess of the recessed through hole of the reinforcement (2) is the difference in height between the front and middle top surfaces of the cold-formed stringer (1).
9. Front reinforcement structure for integral cold-bent stringers according to claim 1, characterised in that said reinforcement (2) is provided with a plurality of fabrication holes (2.3).
10. The front reinforcing structure of an integral cold-bent longitudinal beam as claimed in claim 1, wherein the front reinforcing structure of the integral cold-bent longitudinal beam reduces the stress level of the integral cold-bent longitudinal beam to 220 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829770.5U CN216468080U (en) | 2021-11-18 | 2021-11-18 | Front reinforcing structure of integral cold-bending longitudinal beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829770.5U CN216468080U (en) | 2021-11-18 | 2021-11-18 | Front reinforcing structure of integral cold-bending longitudinal beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216468080U true CN216468080U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122829770.5U Active CN216468080U (en) | 2021-11-18 | 2021-11-18 | Front reinforcing structure of integral cold-bending longitudinal beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216468080U (en) |
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2021
- 2021-11-18 CN CN202122829770.5U patent/CN216468080U/en active Active
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