Lightweight automobile cab bearing longitudinal beam

Abstract

The utility model provides a light-weight automobile cab bearing longitudinal beam which comprises a left longitudinal beam, a right longitudinal beam and a cross beam, grooves are formed in the left longitudinal beam and the right longitudinal beam, crumple holes are formed in the left longitudinal beam and the right longitudinal beam, two vertical plates are arranged on the rear sides of the crumple holes, an X-shaped plate is arranged between the two vertical plates, and the X-shaped plate is connected with the grooves. The vertical plate and the X-shaped plate are fixedly installed in the groove, the crumple holes are formed in the left longitudinal beam and the right longitudinal beam, the vertical plate and the X-shaped plate are arranged, the function of longitudinal energy absorption protection on a vehicle is achieved, the vehicle frame longitudinal beam can be bent to absorb energy during collision through the symmetrically-arranged crumple holes, harm to personnel in a cab is reduced, and the service life of the vehicle frame longitudinal beam is prolonged. By arranging the vertical plate and the X-shaped plate on the longitudinal beam on the rear side of the crumple hole, the rigidity and strength of the longitudinal beam borne by the cab are enhanced, the stress range of the longitudinal beam is widened, damage to the longitudinal beam structure at the rear end is reduced, the safety and protectiveness of a vehicle during collision are further improved, and therefore protection to personnel in the cab is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a lightweight automobile cab load-bearing longitudinal beam. Background Art

[0002] In recent years, the demand for lightweight automobiles has been increasing, and aluminum alloys have been widely used in various automotive system structural parts due to their high specific strength, especially in the field of chassis subframes. In addition, the requirements for automobile safety levels are also getting higher and higher. Traditional models use collapse holes during collisions to allow the frame longitudinal beams to achieve controlled deformation during collisions, absorb collision energy, and reduce injuries to rear occupants of the vehicle.

[0003] However, while the traditional longitudinal beam collapse hole design absorbs most of the energy during a collision, it may also cause damage to the rear end longitudinal beam. In addition, during a collision, forces exceeding the design tolerance may be transmitted to the rear end longitudinal beam. The collision force may be transmitted to the rear end longitudinal beam through the vehicle body structure, causing it to undergo plastic deformation and be impacted and damaged to varying degrees, which may affect the stability and strength of the entire vehicle body structure and, in turn, affect the driver's safety. Utility Model Content

[0004] The utility model aims to provide a lightweight automobile cab load-bearing longitudinal beam to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lightweight automobile cab load-bearing longitudinal beam comprises a left longitudinal beam, a right longitudinal beam and a cross beam. The left longitudinal beam and the right longitudinal beam are provided with grooves inside, so as to reduce the amount of material used while ensuring that the longitudinal beam has sufficient rigidity and strength to bear the load, thereby realizing a lightweight design. The left longitudinal beam and the right longitudinal beam are provided with collapse holes, which are used for the longitudinal beam to bend and absorb energy, thereby reducing damage to cab occupants. Two vertical plates are provided at the rear side of the collapse holes, and an X-shaped plate is provided between the two vertical plates. The vertical plates and the X-shaped plate are both fixedly installed in the grooves, so as to reinforce the rigidity of the longitudinal beam at the rear side of the collapse holes, thereby strengthening the protection of cab occupants.

[0007] Preferably, V-shaped plates are welded equidistantly inside the groove, and the V-shaped plates further enhance the rigidity and strength of the longitudinal beam itself.

[0008] Preferably, a first lightweight hole is opened on the V-shaped plate, and the provision of the first lightweight hole can reduce the overall weight of the longitudinal beam itself.

[0009] Preferably, a second lightweight hole is provided on the left longitudinal beam and the right longitudinal beam.

[0010] Preferably, a transverse plate is welded on one side of the groove, side plates are welded on both sides of the transverse plate, and a docking groove is provided between the transverse plate and the side plates, the docking groove is adapted to the docking joints at both ends of the cross beam, and the docking joints at both ends of the cross beam are connected and fixed to the left longitudinal beam and the right longitudinal beam by riveting.

[0011] Preferably, a reinforcement block is welded between the outer side of the side panel and the groove, and the reinforcement block is triangular in shape to improve the supporting force of the side panel.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By arranging collapse holes, vertical plates and X-shaped plates on the left and right longitudinal beams, the function of longitudinal energy absorption protection for the vehicle is realized. The symmetrically arranged collapse holes enable the frame longitudinal beams to bend and absorb energy during a collision, thereby reducing damage to the occupants in the cab. By arranging vertical plates and X-shaped plates on the longitudinal beams behind the collapse holes, the rigidity and strength of the cab bearing longitudinal beams are enhanced, the force range of the longitudinal beams is increased, the damage to the rear end longitudinal beam structure is reduced, and the safety and protection of the vehicle during a collision are further improved, thereby strengthening the protection of the occupants in the cab. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the split structure of the cross beam and longitudinal beam of the utility model;

[0016] Figure 3 This is a schematic diagram of the V-shaped plate structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional top view of the joint between the longitudinal beam and the cross beam of the utility model.

[0018] In the figure: 1. left longitudinal beam; 2. right longitudinal beam; 3. groove; 4. cross beam; 5. collapse hole; 6. vertical plate; 7. X-shaped plate; 8. V-shaped plate; 9. cross plate; 10. side plate; 11. docking groove; 12. docking joint; 13. reinforcement block; 14. first lightweight hole; 15. second lightweight hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 , the utility model provides a technical solution:

[0021] Embodiment 1:

[0022] A lightweight automobile cab load-bearing longitudinal beam comprises a left longitudinal beam 1, a right longitudinal beam 2 and a cross beam 4. A groove 3 is provided inside the left longitudinal beam 1 and the right longitudinal beam 2, so as to reduce the amount of material used while ensuring that the longitudinal beam has sufficient rigidity and strength to bear the load, thereby realizing a lightweight design. The left longitudinal beam 1 and the right longitudinal beam 2 are provided with collapse holes 5, which are symmetrically arranged and are prior art. The collapse holes 5 are used for the longitudinal beam to bend and absorb energy, thereby reducing damage to cab occupants. Two vertical plates 6 are provided on the rear side of the collapse hole 5, and an X-shaped plate 7 is provided between the two vertical plates 6. The vertical plates 6 and the X-shaped plate 7 are both fixedly installed in the groove 3, so as to reinforce the rigidity of the longitudinal beam behind the collapse hole 5 and strengthen the protection of cab occupants.

[0023] By arranging the crush holes 5 on the left longitudinal beam 1 and the right longitudinal beam 2, when the vehicle body collides, the frame longitudinal beam can bend to absorb energy during the collision, thereby reducing the damage to the occupants in the cab. By arranging the vertical plate 6 and the X-shaped plate 7 on the longitudinal beam on the rear side of the crush hole 5, the rigidity and strength of the load-bearing longitudinal beam of the cab are enhanced, and the damage of the front longitudinal beam to the load-bearing longitudinal beam at the cab during the collision and bending process is effectively reduced, thereby enhancing the protection of the occupants in the cab.

[0024] V-shaped plates 8 are welded equidistantly inside the groove 3, and the V-shaped plates 8 further strengthen the rigidity and strength of the longitudinal beam itself. By equidistantly arranging the V-shaped plates 8 in the groove 3 of the longitudinal beam, the rigidity and strength of the longitudinal beam itself are strengthened, and the load-bearing problem caused by the non-closed cross-section is avoided.

[0025] A second lightweight hole 15 is opened on the left longitudinal beam 1 and the right longitudinal beam 2, and a first lightweight hole 14 is opened on the V-shaped plate 8. The provision of the first lightweight hole 14 and the second lightweight hole 15 can reduce the overall weight of the longitudinal beam itself, achieving a lightweight design while ensuring sufficient rigidity and strength of the longitudinal beam.

[0026] A transverse plate 9 is welded to one side of the groove 3, and side plates 10 are welded to both sides of the transverse plate 9, and a docking groove 11 is arranged between the transverse plate 9 and the side plates 10, and the docking groove 11 is adapted to the docking joints 12 at both ends of the crossbeam 4, and the docking joints 12 at both ends of the crossbeam 4 are connected and fixed to the left longitudinal beam 1 and the right longitudinal beam 2 by riveting. The strength of the connection between the longitudinal beam and the transverse beam 4 is strengthened by setting the transverse plate 9 to ensure the stability of the connection. At the same time, in the process of connecting the crossbeam 4 to the longitudinal beam, the docking joints 12 at both ends of the crossbeam 4 are first inserted into the docking groove 11, and then installed and fixed by riveting. The insertion-type installation and fixation is adopted, which greatly improves the bearing capacity of the structure.

[0027] A reinforcing block 13 is welded between the outer side of the side plate 10 and the groove 3 . The reinforcing block 13 is triangular in shape and improves the supporting force of the side plate 10 .

[0028] Working principle: The utility model provides a collapse hole 5 so that when a vehicle collides, the longitudinal beam body transmits force to the front end cross beam assembly of the subframe, and the force starts to bend to absorb energy, with the bending direction being the front end upward and the rear end downward, thereby reducing the damage to the occupants of the vehicle. The vertical plate 6 and the X-shaped plate 7 provided on the longitudinal beams behind the collapse hole 5 on the left longitudinal beam 1 and the right longitudinal beam 2 strengthen the rigidity and strength of the longitudinal beams behind the collapse hole 5, thereby avoiding damage to the longitudinal beams protected by the cab during the collision, thereby improving the protection of the occupants of the cab.

[0029] By setting a docking groove 11 at the docking installation position of the docking joints 12 at both ends of the longitudinal beam groove 3 and the cross beam 4, the installation method between the cross beam 4 and the longitudinal beam is an insert-type installation, so that the docking joint 12 is inserted into the inside of the docking groove 11, and the outer edges of the docking joint 12 are respectively in contact with the inner wall of the groove 3 and the inner side of the side plate 10, and the docking groove 11 is used to play a bearing and supporting role in the installation process of the cross beam 4, so that the cross beam 4 can disperse part of the force to the longitudinal beams at both ends during the force process, avoiding relying solely on rivets to achieve the bearing capacity of the connection between the cross beam 4 and the longitudinal beam, thereby greatly improving the bearing capacity of the structure.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightweight automobile cab load-bearing longitudinal beam, comprising a left longitudinal beam (1), a right longitudinal beam (2) and a cross beam (4), characterized in that: The left longitudinal beam (1) and the right longitudinal beam (2) are provided with grooves (3) in their interiors, so as to reduce the amount of material used while ensuring that the longitudinal beams have sufficient rigidity and strength to bear the load, thereby achieving a lightweight design. The left longitudinal beam (1) and the right longitudinal beam (2) are provided with collapse holes (5), and the collapse holes (5) are used to enable the longitudinal beams to bend and absorb energy, thereby reducing damage to the personnel in the cab. Two vertical plates (6) are provided at the rear side of the collapse holes (5), and an X-shaped plate (7) is provided between the two vertical plates (6). The vertical plates (6) and the X-shaped plate (7) are both fixedly installed in the grooves (3), so as to reinforce the rigidity of the longitudinal beams at the rear side of the collapse holes (5), thereby enhancing the protection of the personnel in the cab.

2. A lightweight vehicle cab load-bearing longitudinal beam according to claim 1, characterized in that: V-shaped plates (8) are welded at equal intervals inside the groove (3), and the V-shaped plates (8) further enhance the rigidity and strength of the longitudinal beam itself.

3. A lightweight vehicle cab load-bearing longitudinal beam according to claim 2, characterized in that: The V-shaped plate (8) is provided with a first lightweight hole (14), and the provision of the first lightweight hole (14) can reduce the overall weight of the longitudinal beam.

4. The lightweight vehicle cab load-bearing longitudinal beam according to claim 1, characterized in that: The left longitudinal beam (1) and the right longitudinal beam (2) are provided with second lightweight holes (15).

5. The lightweight vehicle cab load-bearing longitudinal beam according to claim 1, characterized in that: A transverse plate (9) is welded to one side of the groove (3), side plates (10) are welded to both sides of the transverse plate (9), and a docking groove (11) is provided between the transverse plate (9) and the side plates (10), the docking groove (11) is adapted to docking joints (12) at both ends of the transverse beam (4), and the docking joints (12) at both ends of the transverse beam (4) are connected and fixed to the left longitudinal beam (1) and the right longitudinal beam (2) by riveting.

6. A lightweight vehicle cab load-bearing longitudinal beam according to claim 5, characterized in that: A reinforcement block (13) is welded between the outer side of the side plate (10) and the groove (3); the reinforcement block (13) is triangular in shape and improves the supporting force of the side plate (10).

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