Vehicle frame closed section structure with widened middle part

Abstract

The utility model provides a vehicle frame closed section structure with a widened middle part, which comprises a vehicle frame longitudinal beam, an inner side reinforcing component is arranged on the inner wall of the vehicle frame longitudinal beam, an outer side reinforcing component is arranged on the outer wall of the vehicle frame longitudinal beam, and a first inner side reinforcing strip, a first inner side reinforcing vertical strip, a second inner side reinforcing strip and a second inner side reinforcing vertical strip are respectively and fixedly connected. The strength of the bent position of the inner wall of the frame longitudinal beam can be improved, meanwhile, the strength of the middle portion of the inner wall of the frame longitudinal beam can be further improved through the middle reinforcing beam, the bent position of the middle reinforcing beam can be further reinforced through the auxiliary reinforcing strips in the shape of the isosceles triangle, and therefore the deformation resistance and strength of the middle reinforcing beam are improved. The first outer side reinforcing strip, the first outer side reinforcing vertical strip, the second outer side reinforcing strip and the second outer side reinforcing vertical strip are fixedly connected to the outer wall of the vehicle frame longitudinal beam, the strength of the bent position of the outer wall of the vehicle frame longitudinal beam can be improved, and therefore the structural strength and the deformation resistance of the vehicle frame longitudinal beam are better.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle frames, and specifically relates to a closed-section structure of a vehicle frame with a widened middle part. Background Technique

[0002] The vehicle frame is a frame structure straddling the front and rear axles of an automobile, commonly known as the main beam, and is the base of the automobile. Generally composed of two longitudinal beams and several cross beams, it is supported on the wheels via suspension devices, the front axle, and the rear axle. The vehicle frame must have sufficient strength and stiffness to withstand the load of the automobile and the impact transmitted from the wheels. The function of the vehicle frame is to support and connect the various assemblies of the automobile, keep the various assemblies in relatively correct positions, and bear various loads inside and outside the automobile.

[0003] During the manufacturing process of a vehicle frame with a widened middle part, corresponding bending parts are set in designated areas on the front and rear sides. However, in the prior art, no corresponding strengthening structure is provided at the bending part of the vehicle frame with a widened middle part, resulting in a small deformation at the bending part of the vehicle frame during long-term force application. Once a small deformation occurs at the bending part of the vehicle frame, it will affect the overall anti-deformation ability and strength of the vehicle frame, thereby affecting the driving safety of the vehicle, and the practicability is poor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a closed-section structure of a vehicle frame with a widened middle part to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A closed-section structure of a vehicle frame with a widened middle part, including a vehicle frame longitudinal beam, a body connection plate, a rear cross beam, a middle cross beam, and a front cross beam. The front cross beam is fixedly connected to the front side of the inner wall of the vehicle frame longitudinal beam, the middle cross beam is fixedly connected to the middle part of the inner wall of the vehicle frame longitudinal beam, the rear cross beam is fixedly connected to the rear side of the inner wall of the vehicle frame longitudinal beam, the body connection plate is fixedly connected to the outer wall of the vehicle frame longitudinal beam. An inner strengthening component is arranged on the inner wall of the vehicle frame longitudinal beam, and the inner strengthening component can improve the strength of the bending part of the inner wall of the vehicle frame longitudinal beam. An outer strengthening component is arranged on the outer wall of the vehicle frame longitudinal beam, and the outer strengthening component can improve the strength of the bending part of the outer wall of the vehicle frame longitudinal beam.

[0007] Preferably, the inner strengthening component includes a first inner strengthening strip, a first inner strengthening vertical strip, and a middle strengthening beam. The first inner strengthening strip is fixedly connected to the rear side of the inner wall of the vehicle frame longitudinal beam, the first inner strengthening vertical strip is fixedly connected to the side of the first inner strengthening strip, and the middle strengthening beam is fixedly connected to the middle part of the inner wall of the vehicle frame longitudinal beam.

[0008] Preferably, the middle reinforcing beam is concave in shape, and auxiliary reinforcing strips are symmetrically and fixedly connected to the upper and lower sides of the inner wall of the middle reinforcing beam. The auxiliary reinforcing strips are isosceles triangle in shape, and the first inner reinforcing vertical strip is semicircular in shape.

[0009] Preferably, the outer reinforcing assembly includes a first outer reinforcing strip and a first outer reinforcing vertical strip. The first outer reinforcing strip is fixedly connected to the rear side of the outer wall of the vehicle frame longitudinal beam, and the first outer reinforcing vertical strip is fixedly connected to the side of the first outer reinforcing strip.

[0010] Preferably, a second outer reinforcing strip is fixedly connected to the front side of the outer wall of the vehicle frame longitudinal beam, and a second outer reinforcing vertical strip is fixedly connected to the side of the second outer reinforcing strip.

[0011] Preferably, a second inner reinforcing strip is fixedly connected to the front side of the inner wall of the vehicle frame longitudinal beam, and a second inner reinforcing vertical strip is fixedly connected to the side of the second inner reinforcing strip. The second inner reinforcing vertical strip is semicircular in shape.

[0012] Preferably, there are two groups of the vehicle frame longitudinal beams, and the distance between the middle parts of the two groups of vehicle frame longitudinal beams is greater than the distance between the front and rear sides.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By fixedly connecting the first inner reinforcing strip, the first inner reinforcing vertical strip, the second inner reinforcing strip and the second inner reinforcing vertical strip respectively, the strength of the bent part of the inner wall of the vehicle frame longitudinal beam can be improved. At the same time, the middle reinforcing beam can further improve the strength of the middle part of the inner wall of the vehicle frame longitudinal beam, and the auxiliary reinforcing strip in the shape of an isosceles triangle can further strengthen the bent part of the middle reinforcing beam, thereby improving the anti-deformation ability and strength of the middle reinforcing beam;

[0015] 2. By fixedly connecting the first outer reinforcing strip, the first outer reinforcing vertical strip, the second outer reinforcing strip and the second outer reinforcing vertical strip to the outer wall of the vehicle frame longitudinal beam respectively, the strength of the bent part of the outer wall of the vehicle frame longitudinal beam can be improved, so that the structural strength and anti-deformation ability of the bent part of the vehicle frame longitudinal beam are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0017] Figure 2 is a right view of the inner reinforcing assembly and the outer reinforcing assembly in the present utility model;

[0018] Figure 3 is Figure 1 a sectional view of;

[0019] Figure 4 is Figure 2Cross-sectional view;

[0020] Figure 5 This is the structural diagram of the middle reinforcing beam in the present utility model.

[0021] In the figure: 1, frame longitudinal beam; 2, inner side reinforcing assembly; 21, first inner side reinforcing strip; 22, first inner side vertical reinforcing strip; 23, middle reinforcing beam; 24, second inner side reinforcing strip; 25, second inner side vertical reinforcing strip; 26, auxiliary reinforcing strip; 3, body connecting plate; 4, rear cross beam; 5, middle cross beam; 6, outer side reinforcing assembly; 61, second outer side reinforcing strip; 62, second outer side vertical reinforcing strip; 63, first outer side reinforcing strip; 64, first outer side vertical reinforcing strip; 7, front cross beam. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0024] Embodiment 1:

[0025] A frame closed-section structure with a widened middle part, including a frame longitudinal beam 1, a body connecting plate 3, a rear cross beam 4, a middle cross beam 5, and a front cross beam 7. The front side of the inner wall of the frame longitudinal beam 1 is fixedly connected with the front cross beam 7, the middle part of the inner wall of the frame longitudinal beam 1 is fixedly connected with the middle cross beam 5, the rear side of the inner wall of the frame longitudinal beam 1 is fixedly connected with the rear cross beam 4. The frame longitudinal beam 1 is connected to the body connecting plate 3, the rear cross beam 4, the middle cross beam 5, and the front cross beam 7 by welding. The frame longitudinal beam 1, the rear cross beam 4, the middle cross beam 5, and the front cross beam 7 form the frame. The outer wall of the frame longitudinal beam 1 is fixedly connected with the body connecting plate 3. The body connecting plate 3 facilitates the installation and fixation of the external body on the upper end surface of the frame longitudinal beam 1. There are two groups of frame longitudinal beams 1, and the distance between the middle parts of the two groups of frame longitudinal beams 1 is greater than the distance between the front and rear sides. The space in the middle part of the two groups of frame longitudinal beams 1 with a greater distance between the middle parts than the front and rear sides is larger, so that the passenger compartment area in the external body can be made larger.

[0026] An inner side strengthening assembly 2 is provided on the inner wall of the longitudinal frame beam 1, and the inner side strengthening assembly 2 can improve the strength of the bent part of the inner wall of the longitudinal frame beam 1. An outer side strengthening assembly 6 is provided on the outer wall of the longitudinal frame beam 1, and the outer side strengthening assembly 6 can improve the strength of the bent part of the outer wall of the longitudinal frame beam 1. The longitudinal frame beam 1 adopts a closed-section structural form. The longitudinal frame beam 1 with a closed section can facilitate manufacturing and maintenance while ensuring sufficient strength and stiffness. Since the internal detailed structure and working principle of the longitudinal frame beam 1 are relatively mature technologies in the prior art, no further elaboration will be made here.

[0027] The inner side strengthening assembly 2 includes a first inner side strengthening strip 21, a first inner side strengthening vertical strip 22, and a middle strengthening beam 23. The first inner side strengthening strip 21 is fixedly connected to the rear side of the inner wall of the longitudinal frame beam 1. The material of the first inner side strengthening strip 21 is the same as that of the longitudinal frame beam 1. The first inner side strengthening strip 21 is connected to the longitudinal frame beam 1 and the first inner side strengthening vertical strip 22 by welding. The first inner side strengthening strip 21 can further improve the strength of the bent part at the rear side of the inner wall of the longitudinal frame beam 1. The first inner side strengthening vertical strip 22 is fixedly connected to the side of the first inner side strengthening strip 21. The shape of the first inner side strengthening vertical strip 22 is semi-circular. The material of the first inner side strengthening vertical strip 22 is the same as that of the longitudinal frame beam 1. The semi-circular first inner side strengthening vertical strip 22 can further improve the strength of the side of the first inner side strengthening strip 21.

[0028] The middle strengthening beam 23 is fixedly connected to the middle part of the inner wall of the longitudinal frame beam 1. The shape of the middle strengthening beam 23 is concave. The middle strengthening beam 23 and the auxiliary strengthening strip 26 are connected to the longitudinal frame beam 1 by welding. The material of the middle strengthening beam 23 is the same as that of the longitudinal frame beam 1. The concave-shaped middle strengthening beam 23 can not only improve the strength of the middle part of the inner wall of the longitudinal frame beam 1, but also increase the width of the middle part of the longitudinal frame beam 1, thereby improving the strength and anti-deformation ability of the middle part of the longitudinal frame beam 1. Auxiliary strengthening strips 26 are symmetrically and fixedly connected to the upper and lower sides of the inner wall of the middle strengthening beam 23, and the shape of the auxiliary strengthening strip 26 is an isosceles triangle. The isosceles triangle-shaped auxiliary strengthening strip 26 can further strengthen the bent part of the middle strengthening beam 23, thereby improving the anti-deformation ability and strength of the middle strengthening beam 23.

[0029] On the front side of the inner wall of the longitudinal frame beam 1, a second inner reinforcing strip 24 is fixedly connected. The material of the second inner reinforcing strip 24 is the same as that of the longitudinal frame beam 1. The second inner reinforcing strip 24 is connected to both the longitudinal frame beam 1 and the second inner reinforcing vertical strip 25 by welding. The second inner reinforcing strip 24 can further improve the strength of the bent part on the front side of the inner wall of the longitudinal frame beam 1. A second inner reinforcing vertical strip 25 is fixedly connected to the side of the second inner reinforcing strip 24, and the shape of the second inner reinforcing vertical strip 25 is semi-circular. The material of the second inner reinforcing vertical strip 25 is the same as that of the longitudinal frame beam 1. The semi-circular second inner reinforcing vertical strip 25 can further improve the strength of the side of the second inner reinforcing strip 24.

[0030] Embodiment 2:

[0031] On the basis of Embodiment 1, in this embodiment, by fixedly connecting a first outer reinforcing strip 63, a first outer reinforcing vertical strip 64, a second outer reinforcing strip 61, and a second outer reinforcing vertical strip 62 to the outer wall of the longitudinal frame beam 1 respectively, the strength of the bent part of the outer wall of the longitudinal frame beam 1 can be improved, so that the structural strength and anti-deformation ability of the bent part of the longitudinal frame beam 1 are better.

[0032] The outer reinforcing assembly 6 includes a first outer reinforcing strip 63 and a first outer reinforcing vertical strip 64. A first outer reinforcing strip 63 is fixedly connected to the rear side of the outer wall of the longitudinal frame beam 1. The material of the first outer reinforcing strip 63 is the same as that of the longitudinal frame beam 1. The first outer reinforcing strip 63 is connected to both the longitudinal frame beam 1 and the first outer reinforcing vertical strip 64 by welding. The first outer reinforcing strip 63 can further improve the strength of the bent part on the rear side of the outer wall of the longitudinal frame beam 1. A first outer reinforcing vertical strip 64 is fixedly connected to the side of the first outer reinforcing strip 63. The material of the first outer reinforcing vertical strip 64 is the same as that of the longitudinal frame beam 1. The shape of the first outer reinforcing vertical strip 64 is semi-circular. The semi-circular first outer reinforcing vertical strip 64 can further improve the strength of the side of the first outer reinforcing strip 63.

[0033] A second outer reinforcing strip 61 is fixedly connected to the front side of the outer wall of the longitudinal frame beam 1. The material of the second outer reinforcing strip 61 is the same as that of the longitudinal frame beam 1. The second outer reinforcing strip 61 is connected to both the longitudinal frame beam 1 and the second outer reinforcing vertical strip 62 by welding. The second outer reinforcing strip 61 can further improve the strength of the bent part on the front side of the outer wall of the longitudinal frame beam 1. A second outer reinforcing vertical strip 62 is fixedly connected to the side of the second outer reinforcing strip 61. The material of the second outer reinforcing vertical strip 62 is the same as that of the longitudinal frame beam 1. The shape of the second outer reinforcing vertical strip 62 is semi-circular. The semi-circular second outer reinforcing vertical strip 62 can further improve the strength of the side of the second outer reinforcing strip 61.

[0034] Working principle: By fixedly connecting the first inner reinforcing strip 21 and the first inner reinforcing vertical strip 22 to the inner wall of the longitudinal beam 1 of the vehicle frame respectively, the strength of the bending part at the rear side of the inner wall of the longitudinal beam 1 of the vehicle frame can be improved. The fixedly connected second inner reinforcing strip 24 and second inner reinforcing vertical strip 25 can improve the strength of the bending part at the front side of the inner wall of the longitudinal beam 1 of the vehicle frame. At the same time, the middle reinforcing beam 23 can further improve the strength of the middle part of the inner wall of the longitudinal beam 1 of the vehicle frame, and the auxiliary reinforcing strip 26 in the shape of an isosceles triangle can further strengthen the bending part of the middle reinforcing beam 23, so as to improve the anti-deformation ability and strength of the middle reinforcing beam 23. By fixedly connecting the first outer reinforcing strip 63 and the first outer reinforcing vertical strip 64 to the outer wall of the longitudinal beam 1 of the vehicle frame respectively, the strength of the bending part at the rear side of the outer wall of the longitudinal beam 1 of the vehicle frame can be improved. The fixedly connected second outer reinforcing strip 61 and second outer reinforcing vertical strip 62 can improve the strength of the bending part at the front side of the outer wall of the longitudinal beam 1 of the vehicle frame, so that the structural strength and anti-deformation ability of the bending part of the longitudinal beam 1 of the vehicle frame are better.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed cross-section structure of a vehicle frame with a widened middle portion, comprising a frame longitudinal beam (1), a vehicle body connecting plate (3), a rear cross beam (4), a middle cross beam (5) and a front cross beam (7), characterized in that: The front side of the inner wall of the frame longitudinal beam (1) is fixedly connected to a front cross beam (7), the middle part of the inner wall of the frame longitudinal beam (1) is fixedly connected to a middle cross beam (5), the rear side of the inner wall of the frame longitudinal beam (1) is fixedly connected to a rear cross beam (4), and the outer wall of the frame longitudinal beam (1) is fixedly connected to a vehicle body connecting plate (3); The inner wall of the frame longitudinal beam (1) is provided with an inner reinforcement component (2), and the inner reinforcement component (2) can improve the strength of a bent portion of the inner wall of the frame longitudinal beam (1); the outer wall of the frame longitudinal beam (1) is provided with an outer reinforcement component (6), and the outer reinforcement component (6) can improve the strength of a bent portion of the outer wall of the frame longitudinal beam (1).

2. The closed cross-section structure of a vehicle frame with a widened middle portion according to claim 1, characterized in that: The inner side reinforcement assembly (2) comprises a first inner side reinforcement strip (21), a first inner side reinforcement vertical strip (22) and a middle reinforcement beam (23); the first inner side reinforcement strip (21) is fixedly connected to the rear side of the inner wall of the frame longitudinal beam (1); the first inner side reinforcement strip (21) is fixedly connected to the side edge of the first inner side reinforcement strip (21); and the middle part of the inner wall of the frame longitudinal beam (1) is fixedly connected to the middle reinforcement beam (23).

3. The closed cross-section structure of the vehicle frame with a widened middle portion according to claim 2, characterized in that: The middle reinforcement beam (23) is concave in shape, and auxiliary reinforcement bars (26) are symmetrically fixedly connected to the inner wall of the middle reinforcement beam (23) on both sides, and the auxiliary reinforcement bars (26) are in the shape of an isosceles triangle. The first inner reinforcement vertical bars (22) are in the shape of a semicircle.

4. The closed cross-section structure of a vehicle frame with a widened middle portion according to claim 1, characterized in that: The outer side reinforcement assembly (6) comprises a first outer side reinforcement bar (63) and a first outer side reinforcement vertical bar (64); the first outer side reinforcement bar (63) is fixedly connected to the rear side of the outer wall of the frame longitudinal beam (1); and the first outer side reinforcement bar (63) is fixedly connected to the side edge of the first outer side reinforcement bar (64).

5. The closed cross-section structure of a vehicle frame with a widened middle portion according to claim 1, characterized in that: A second outer reinforcing strip (61) is fixedly connected to the front side of the outer wall of the frame longitudinal beam (1), and a second outer reinforcing vertical strip (62) is fixedly connected to the side of the second outer reinforcing strip (61).

6. The closed cross-section structure of a vehicle frame with a widened middle portion according to claim 1, characterized in that: A second inner reinforcing strip (24) is fixedly connected to the front side of the inner wall of the frame longitudinal beam (1), a second inner reinforcing strip (25) is fixedly connected to the side of the second inner reinforcing strip (24), and the second inner reinforcing strip (25) is semicircular in shape.

7. The closed cross-section structure of a vehicle frame with a widened middle portion according to claim 1, characterized in that: The frame longitudinal beams (1) are provided in two groups, and the distance between the middle parts of the two groups of frame longitudinal beams (1) is greater than the distance between the front and rear sides.

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