A connection structure between a front collision beam and a longitudinal beam

Abstract

The utility model relates to the technical field of automobile bodies, and discloses a connection structure between a front collision beam and a longitudinal beam, comprising a front collision beam body and a longitudinal beam body, wherein the front collision beam body is horizontally placed at the front end of the longitudinal beam body, and further comprises a connecting plate, an energy absorption box and a protection block, wherein the connecting plate is vertically welded at the front end of the longitudinal beam body. The utility model has an energy absorption box fixedly connected between the front collision beam body and the longitudinal beam body, and a crush groove evenly opened on the outside of the energy absorption box. When the front collision beam body collides, the energy absorption box deforms to absorb the impact. Since the energy absorption box is fixedly connected to the protection block at the front end of the longitudinal beam body by bolts passing through the first fixing hole and the second fixing hole, the impact force falls on the protection block after being buffered by the energy absorption box, and will not directly cause damage to the connecting plate and the front end of the longitudinal beam body, further reducing the maintenance cost, and facilitating the replacement of the front collision beam body and the energy absorption box.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile bodies, in particular to a connection structure between a front collision crossbeam and a longitudinal beam. Background Art

[0002] The front collision beam is an important component for protecting the safety of the vehicle. It is connected to the front end of the front section of the longitudinal beam assembly. It is mainly used to absorb a large amount of energy when the vehicle collides head-on, to prevent serious deformation of the engine compartment and affect the life safety of people in the cab and the co-driver's cab.

[0003] After searching, the publication number is CN203005330U, which discloses a connection structure between a front collision beam and a longitudinal beam. The strength and rigidity of the front collision beam are improved by welding a reinforcement and a front section cover plate of the engine compartment side beam, so that the front collision beam can meet the requirements of the head-on collision regulations with a single-layer structure.

[0004] In the process of realizing the utility model, the inventors found that there are at least the following problems in the prior art that have not been solved: the above case only welds the front collision beam to the front end of the longitudinal beam. When the front end of the car collides, the deformation of the front collision beam will directly damage the connecting plate and the longitudinal beam, thereby increasing the maintenance cost.

[0005] Therefore, we propose a connection structure between the front collision cross beam and the longitudinal beam, which can solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a connection structure between a front collision cross beam and a longitudinal beam, which solves the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection structure between a front collision beam and a longitudinal beam, comprising a front collision beam body and a longitudinal beam body, wherein the front collision beam body is horizontally placed at the front end of the longitudinal beam body, and further comprises a connecting plate, an energy absorption box and a protection block, wherein the connecting plate is vertically welded to the front end of the longitudinal beam body, the energy absorption box is welded to a side of the front collision beam body close to the longitudinal beam body, the protection block is welded to the middle part of the outer side of the connecting plate, the protection block is movably connected to one end of the energy absorption box, a first fixing hole is penetrated through the outer side of the energy absorption box close to one end of the longitudinal beam body, second fixing holes are all opened at the front end, rear end, upper end and lower end of the protection block, and the front collision beam body and the longitudinal beam body are fixedly connected by bolts penetrating the first fixing hole and the second fixing hole.

[0008] As an optional solution of the technical solution of the present application, the outer side of the energy absorption box is provided with collapse grooves, and the collapse grooves are evenly distributed at the upper end, the lower end, the front end and the rear end of the energy absorption box.

[0009] As an optional solution of the technical solution of the present application, the size of the protection block matches that of the energy absorption box, and the first fixing hole corresponds to the second fixing hole.

[0010] As an optional solution of the technical solution of the present application, a triangular reinforcing rib is welded on one side of the front collision beam body close to the longitudinal beam body, and one side of the reinforcing rib is welded to the outer side of the energy absorption box.

[0011] As an optional solution of the technical solution of the present application, the number of the energy absorption boxes is two groups, and the two groups of energy absorption boxes correspond to the two groups of longitudinal beam bodies.

[0012] Compared with the prior art, the utility model has the following beneficial effects: an energy absorption box is fixedly connected between the front collision beam body and the longitudinal beam body, and crush grooves are evenly opened on the outside of the energy absorption box. When the front collision beam body collides, the energy absorption box is deformed to absorb the impact; since the energy absorption box is fixedly connected to the protection block at the front end of the longitudinal beam body by bolts passing through the first fixing hole and the second fixing hole, the impact force falls on the protection block after being buffered by the energy absorption box, and will not directly cause damage to the connecting plate and the front end of the longitudinal beam body, thereby further reducing the maintenance cost and facilitating the replacement of the front collision beam body and the energy absorption box. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 It is a structural schematic diagram of a connection structure between a front collision cross beam and a longitudinal beam of the utility model;

[0015] Figure 2 The utility model is a top view of a connection structure between a front collision cross beam and a longitudinal beam.

[0016] In the figure: 1. front collision beam body; 11. longitudinal beam body; 12. connecting plate; 13. protection block; 14. energy absorption box; 15. first fixing hole; 16. second fixing hole; 17. bolt; 2. crush groove; 21. reinforcing rib. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 2The utility model provides a technical solution: a connection structure of a front collision beam and a longitudinal beam, comprising a front collision beam body 1 and a longitudinal beam body 11, the front collision beam body 1 is horizontally arranged at the front end of the longitudinal beam body 11, and also comprises a connecting plate 12, an energy absorbing box 14 and a protection block 13, the connecting plate 12 is vertically welded at the front end of the longitudinal beam body 11, the energy absorbing box 14 is welded at one side of the front collision beam body 1 close to the longitudinal beam body 11, the number of the energy absorbing boxes 14 is two groups, the two groups of energy absorbing boxes 14 correspond to the two groups of longitudinal beam bodies 11, the protection block 13 is welded at the middle part of the outer side of the connecting plate 12, the protection block 13 is movably connected to one end of the energy absorbing box 14, and the size of the protection block 13 matches that of the energy absorbing box 14, and a crush groove 2 is opened on the outer side of the energy absorbing box 14, and the crush groove 2 is evenly distributed at the upper end, the lower end, the front end and the rear end of the energy absorbing box 14.

[0018] In this technical solution, an energy absorption box 14 is fixedly connected between the front collision beam body 1 and the longitudinal beam body 11, and the crush grooves 2 are evenly opened on the outside of the energy absorption box 14. When the front collision beam body 1 collides, the energy absorption box 14 is deformed to absorb the impact. The impact force is buffered by the energy absorption box 14 and falls on the protection block 13, and will not directly cause damage to the connecting plate 12 and the front end of the longitudinal beam body 11, further reducing the maintenance cost.

[0019] In this embodiment, a first fixing hole 15 is formed through the outer side of the energy absorption box 14 near one end of the longitudinal beam body 11, and second fixing holes 16 are formed at the front end, rear end, upper end and lower end of the protection block 13. The first fixing hole 15 corresponds to the second fixing hole 16, and the front collision beam body 1 and the longitudinal beam body 11 are fixedly connected by bolts 17 passing through the first fixing hole 15 and the second fixing hole 16.

[0020] In this technical solution, the front collision beam body 1 and the longitudinal beam body 11 are fixedly connected by bolts 17 passing through the first fixing hole 15 and the second fixing hole 16, which facilitates the fixed connection between the front collision beam body 1 and the energy absorption box 14 and the longitudinal beam body 11. The bolts 17 can be removed to facilitate the replacement of damaged front collision beam body 1 and energy absorption box 14.

[0021] In this embodiment, a triangular reinforcing rib 21 is welded to one side of the front collision cross beam body 1 close to the longitudinal beam body 11 , and one side of the reinforcing rib 21 is welded to the outer side of the energy absorption box 14 .

[0022] In this technical solution, a reinforcing rib 21 is welded on one side of the front collision beam body 1 fixedly connected to the energy absorption box 14 , which can improve the connection stability between the front collision beam body 1 and the energy absorption box 14 .

[0023] When a connection structure between a front collision beam and a longitudinal beam is used, the protection blocks 13 at the front ends of the two groups of longitudinal beam bodies 11 are inserted into the two groups of energy absorption boxes 14 on the rear side of the front collision beam body 1, so that the first fixing hole 15 is aligned with the second fixing hole 16, and then the bolts 17 penetrate the first fixing hole 15 and the second fixing hole 16, so that the front collision beam body 1 and the energy absorption box 14 are fixedly connected to the longitudinal beam body 11, and through the crush grooves 2 evenly opened on the outside of the energy absorption box 14, when the front collision beam body 1 collides, the energy absorption box 14 is deformed to absorb the impact, and the impact force is buffered by the energy absorption box 14 and falls on the protection block 13, and will not directly cause damage to the connecting plate 12 and the front end of the longitudinal beam body 11, further reducing the maintenance cost.

Claims

1. A connection structure of a front collision cross beam and a longitudinal beam, comprising a front collision cross beam body (1) and a longitudinal beam body (11), wherein the front collision cross beam body (1) is horizontally arranged at the front end of the longitudinal beam body (11), and characterized in that: The invention also comprises a connecting plate (12), an energy absorption box (14) and a protection block (13); the connecting plate (12) is vertically welded to the front end of the longitudinal beam body (11); the energy absorption box (14) is welded to the side of the front collision cross beam body (1) close to the longitudinal beam body (11); the protection block (13) is welded to the middle part of the outer side of the connecting plate (12); the protection block (13) is movably connected to one end of the energy absorption box (14); a first fixing hole (15) is provided through the outer side of the end of the energy absorption box (14) close to the longitudinal beam body (11); the front end, rear end, upper end and lower end of the protection block (13) are all provided with second fixing holes (16); the front collision cross beam body (1) and the longitudinal beam body (11) are fixedly connected by bolts (17) passing through the first fixing hole (15) and the second fixing hole (16).

2. The connection structure of the front collision cross beam and the longitudinal beam according to claim 1, characterized in that: The outer side of the energy absorption box (14) is provided with a collapse groove (2), and the collapse groove (2) is evenly distributed at the upper end, the lower end, the front end and the rear end of the energy absorption box (14).

3. The connection structure of the front collision cross beam and the longitudinal beam according to claim 1, characterized in that: The size of the protection block (13) matches that of the energy absorption box (14), and the first fixing hole (15) corresponds to the second fixing hole (16).

4. The connection structure of the front collision cross beam and the longitudinal beam according to claim 1, characterized in that: A triangular reinforcing rib (21) is welded to one side of the front collision cross beam body (1) close to the longitudinal beam body (11), and one side of the reinforcing rib (21) is welded to the outer side of the energy absorption box (14).

5. The connection structure of the front collision cross beam and the longitudinal beam according to claim 1, characterized in that: The number of the energy absorption boxes (14) is two groups, and the two groups of energy absorption boxes (14) correspond to the two groups of longitudinal beam bodies (11).

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