Frame cross beam connecting structure and vehicle

Abstract

The utility model provides a vehicle frame cross beam connecting structure and a vehicle. The vehicle frame cross beam connecting structure comprises connecting frames arranged at the two ends of a vehicle frame cross beam respectively. The connecting frames are used for fixedly connecting the ends of the vehicle frame cross beam to vehicle frame longitudinal beams on the corresponding sides. The connecting frame is of a box-shaped structure, and a lap joint opening and an insertion opening are formed in the two ends of the connecting frame respectively. The end part of the frame cross beam is inserted into the connecting frame through the inserting opening; a first end face connected with the inner side of the frame longitudinal beam in a lap joint mode and a second end face connected with the bottom of the frame longitudinal beam in a lap joint mode are formed at the lap joint opening. According to the vehicle frame cross beam connecting structure, the first end face and the second end face at the lap joint opening are fixedly connected with the side wall and the bottom wall of the vehicle frame longitudinal beam in a lap joint mode respectively, so that the contact area between the connecting frame and the vehicle frame longitudinal beam is greatly increased, and the durability level of a welding bead and the load bearing capacity of the connecting frame can be improved; and therefore, the connection stability between the frame cross beam and the frame longitudinal beam is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body structure, and in particular to a vehicle frame crossbeam connection structure. In addition, the utility model also relates to a vehicle. Background Art

[0002] The frame is the chassis foundation of the vehicle, and its own structural performance plays a decisive role in vehicle safety; among them, the beam chassis can give the vehicle strong off-road capabilities.

[0003] In the vehicle frame, especially in the workshop of the beam-type chassis, multiple frame cross beams are arranged between the frame longitudinal beams on both sides. The ends of the frame cross beams are generally fixedly connected to the frame longitudinal beams by means of screw connection, welding, etc., and connecting brackets are usually arranged between the frame cross beams and the frame longitudinal beams. The connecting bracket is an important structure for connecting the frame cross beams and the frame longitudinal beams. Its static strength and durability play a vital role in the overall connection performance, which is directly related to the structural stability of the entire frame and the off-road performance of the vehicle.

[0004] In the prior art, the connecting bracket is usually connected to the frame longitudinal beam by a weld. When it is subjected to a large load, the lap weld between the bracket and the frame longitudinal beam is prone to cracking due to insufficient supporting force. At the same time, the bracket and the frame crossbeam are mostly connected by bolts, but at the bending part of the bracket, the sheet metal is subjected to a large tensile load and is prone to tearing, causing a series of safety problems. Utility Model Content

[0005] In view of this, the utility model aims to provide a frame crossbeam connection structure to improve the connection stability between the frame crossbeam and the frame longitudinal beam.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A vehicle frame crossbeam connection structure comprises connecting frames respectively arranged at both ends of the vehicle frame crossbeam, wherein the connecting frames are used to fix the ends of the vehicle frame crossbeam to the vehicle frame longitudinal beams on the corresponding sides;

[0008] The connecting frame adopts a box-shaped structure, and the two ends of the connecting frame are respectively provided with a lap joint and an insertion opening; the end of the frame crossbeam is inserted into the connecting frame through the insertion opening; the lap joint is formed with a first end face lap-connected with the inner side of the frame longitudinal beam, and a second end face lap-connected with the bottom of the frame longitudinal beam.

[0009] Furthermore, the cross-sectional dimensions of the chamber in the connecting frame are gradually increased from the insertion opening toward the overlapped opening.

[0010] Furthermore, the connecting frame includes a first plate body and a second plate body that are buckled and connected, and the chamber in the connecting frame is formed between the first plate body and the second plate body.

[0011] Furthermore, the first plate body and the second plate body are buckled together in the length direction of the frame longitudinal beam, and relative to the buckling surfaces of the first plate body and the second plate body adopt a symmetrical structure.

[0012] Furthermore, a reinforcing plate is provided on the inner wall of the chamber in the connecting frame, and the reinforcing plate is located at a bending portion of the plate body of the connecting frame.

[0013] Furthermore, the first end surface and the second end surface are fully welded and fixedly connected to the frame longitudinal beam.

[0014] Furthermore, the end of the frame crossbeam is fixedly connected to the connecting frame by a bolt pair.

[0015] Furthermore, the bolt pair passes through the frame crossbeam and the connecting frame in the front-rear direction of the vehicle.

[0016] Furthermore, it also includes a reinforcing bracket arranged in the cavity of the connecting frame, and the reinforcing bracket is arranged corresponding to the penetration position of the bolt pair; the two ends of the reinforcing bracket in the front and rear directions of the vehicle are respectively abutted against the two opposite inner walls of the cavity, and a limiting groove is formed on the reinforcing bracket, and the part of the bolt pair located in the cavity is located in the limiting groove.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The frame crossbeam connection structure of the utility model adopts a box-shaped structure for the connection frame, and the projection of the overlap interface thereof in the length direction of the frame longitudinal beam is in a "V" shape. The first end face and the second end face at the overlap interface are overlapped and fixedly connected with the side wall and the bottom wall of the frame longitudinal beam respectively, so that the contact area between the connection frame and the frame longitudinal beam is greatly increased, which can effectively increase the length of the weld between the connection frame and the frame longitudinal beam, improve the durability of the weld and the load bearing capacity of the connection frame; at the same time, the insertion port of the connection frame and the frame crossbeam are connected by insertion, so that the connection firmness between the frame crossbeam and the connection frame is guaranteed, thereby improving the connection firmness between the frame crossbeam and the frame longitudinal beam.

[0019] In addition, a reinforcing plate is provided in the connecting frame to improve the structural strength of the bending part of the connecting frame plate. The connecting frame and the frame crossbeam are screwed together, which has the advantages of convenient operation and reliable connection. A reinforcing bracket is provided at the position where the bolt pair is inserted. The reinforcing bracket can support the connecting frame in the insertion direction of the bolt pair, which can effectively prevent the deformation of the connecting frame that may be caused by tightening the bolt pair.

[0020] Another object of the utility model is to provide a vehicle, wherein the frame of the vehicle is provided with the frame cross beam connection structure of the utility model. The vehicle of the utility model has the technical advantages possessed by the above frame cross beam connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention. The directional terms such as front and back, top and bottom involved therein are only used to indicate relative positional relationships and do not constitute improper limitations on the present invention. In the accompanying drawings:

[0022] Figure 1 This is a structural schematic diagram of a vehicle frame where the vehicle frame crossbeam connection structure described in an embodiment of the utility model is located;

[0023] Figure 2 for Figure 1 a rear view of the frame shown;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the frame shown in the figure from a rear lower perspective;

[0025] Figure 4 for Figure 1 A schematic diagram of the partial structure of the frame shown in another viewing angle;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the connecting frame according to an embodiment of the utility model;

[0027] Figure 6 for Figure 5 The structural schematic diagram of the connecting frame shown in FIG. 1 after the first plate body is hidden;

[0028] Figure 7 for Figure 5 An exploded view of the connecting frame shown;

[0029] Figure 8 for Figure 2 Schematic diagram of the cross-sectional structure of the part indicated by AA.

[0030] Description of reference numerals:

[0031] 1. Frame crossbeam;

[0032] 2. Connecting frame; 20. Lapping interface; 200. First end surface; 201. Second end surface; 21. First plate body; 22. Second plate body; 23. Insertion port;

[0033] 3. Frame longitudinal beam;

[0034] 41. Reinforcement bracket; 410. Limiting groove; 42. Reinforcement plate; 5. Bolt pair. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0036] In the description of the present invention, it should be stated that if there are terms indicating orientation or positional relationship such as "up, down, left, right, front, back, inside, outside", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Taking the vehicle described in the present invention as an example, the orientation words such as "up, down, left, right, front, back" used in the embodiments are defined based on the up and down direction (also known as the height direction), the left and right direction (also known as the width direction) and the front and back direction (also known as the length direction) of the vehicle. Specifically, as shown in the drawings, the X direction is the front and back direction of the vehicle, wherein the side to which the arrow points is "front", and the opposite is "back". The Y direction is the left and right direction of the vehicle, wherein the side to which the arrow points is "left", and the opposite is "right". The Z direction is the up and down direction of the vehicle, wherein the side to which the arrow points is "up", and the opposite is "down". “Inside” and “outside” are defined based on the contour of the corresponding components. For example, “inside” and “outside” are defined based on the contour of a vehicle, with the side of the vehicle contour close to the middle of the vehicle being “inside” and the opposite being “outside”.

[0037] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installed", "connected", "connection", and "connector" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific circumstances. The limiting terms such as "first, second, A, B, C, D" that appear in the description of the present utility model are only used to distinguish similar features of different positions, attributes or uses, so as to achieve the purpose of avoiding ambiguity and confusion in the description, and cannot be understood as indicating or implying relative importance.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0039] Embodiment 1

[0040] This embodiment relates to a frame crossbeam connection structure, which can improve the connection stability between the frame crossbeam 1 and the frame longitudinal beam 3; an exemplary structure thereof is as follows Figures 1 to 5 shown.

[0041] In general, the frame cross beam connection structure includes a connection frame 2 respectively arranged at both ends of the frame cross beam 1, and the connection frame 2 is used to fix the end of the frame cross beam 1 to the frame longitudinal beam 3 on the corresponding side. The connection frame 2 adopts a box-shaped structure, and the two ends of the connection frame 2 are respectively provided with a lap joint 20 and an insertion opening 23; the end of the frame cross beam 1 is inserted into the connection frame 2 through the insertion opening 23. The lap joint 20 is formed with a first end face 200 lap-connected with the inner side of the frame longitudinal beam 3, and a second end face 201 lap-connected with the bottom of the frame longitudinal beam 3.

[0042] Based on the above overall arrangement, preferably, the first end face 200 and the second end face 201 are both fully welded and fixedly connected to the frame longitudinal beam 3. The overlap interface 20 is fully welded and fixedly connected to the outer wall of the frame longitudinal beam 3. The connection process is mature and reliable, which is conducive to enhancing the connection reliability between the connecting frame 2 and the frame longitudinal beam 3.

[0043] The specific shape of the connecting frame 2 can of course be flexibly designed. Figure 5 and Figure 6 As shown, the cross-sectional size of the chamber in the connecting frame 2 is gradually increased from the insertion port 23 toward the lap joint 20. The chamber in the connecting frame 2 is set to be a trumpet shape with a gradually increased size from the insertion port 23 toward the lap joint 20, which can effectively increase the size of the lap joint 20, thereby providing a good basic condition for increasing the contact area between the connecting frame 2 and the frame longitudinal beam 3. The overall trumpet-shaped structure of the connecting frame 2 is also conducive to improving the force transmission performance of the connecting frame 2.

[0044] And, reference Figure 7 As shown, the connecting frame 2 of this embodiment includes a first plate body 21 and a second plate body 22 that are buckled and connected, and the chamber in the connecting frame 2 is formed between the first plate body 21 and the second plate body 22. The connecting frame 2 adopts a split structure and adopts a buckling welding assembly method, which is convenient for the processing and construction of the connecting frame 2, and also convenient for the arrangement of the reinforcing plate 42, the reinforcing bracket 41, etc. in the connecting frame 2.

[0045] Specifically, it is preferred to buckle the first plate 21 and the second plate 22 together in the length direction of the frame longitudinal beam 3 (i.e., the front-to-back direction of the vehicle). Moreover, the two are arranged front and back in the front-to-back direction of the vehicle, and the buckling surface of the two, i.e., the longitudinal section where the center line of the frame cross beam 1 is located (the section perpendicular to the front-to-back direction of the vehicle) is the symmetry plane to form a mutually symmetrical structure. The first plate 21 and the second plate 22 of the connecting frame 2 adopt a symmetrical structure, which is convenient for construction. The first plate 21 and the second plate 22 are buckled in a front-to-back arrangement, and both have a first end face 200 and a second end face 201, so that the connection reliability between the first plate 21 and the second plate 22 and the frame longitudinal beam 3 is guaranteed, which is conducive to improving the overall structural stability of the connecting frame 2.

[0046] In addition, if Figure 7 and Figure 8 As shown, a reinforcing plate 42 is further provided on the inner wall of the chamber in the connecting frame 2 of the present embodiment, and the reinforcing plate 42 is located at the bending portion of the plate body (the first plate body 21 or the second plate body 22) of the connecting frame 2. The reinforcing plate 42 is provided in the connecting frame 2 to enhance the structural strength of the bending portion of the plate body of the connecting frame 2 and the tensile strength of the bending portion of the sheet metal. In the present embodiment, a reinforcing plate 42 in a bent shape is provided at the bending portion at the bottom of the first plate body 21 and the bending portion at the bottom of the second plate body 22, and the two relatively bent plates of the reinforcing plate 42 are respectively welded to the side wall and the bottom wall of the first plate body 21 or the second plate body 22.

[0047] Of course, the connection between the frame crossbeam 1 and the connecting frame 2 can also be fixed by welding. However, in this embodiment, the end of the frame crossbeam 1 is fixedly connected to the connecting frame 2 by a bolt pair 5. The connecting frame 2 and the frame crossbeam 1 are screwed, which has the advantages of convenient operation and reliable fixing method. In this embodiment, the end of the frame crossbeam 1 and the insertion port 23 of the connecting frame 2 are fixedly connected together by two bolt pairs 5 arranged at intervals.

[0048] Based on the connection mode of the bolt pair 5, preferably, the bolt pair 5 is made to penetrate the frame cross beam 1 and the connecting frame 2 in the front-to-back direction of the vehicle. The bolt pair 5 is arranged in the front-to-back direction of the vehicle in a penetrating manner, which not only facilitates the assembly operation, but also improves the connection firmness between the frame cross beam 1 and the connecting frame 2.

[0049] In addition, the frame crossbeam connection structure of the present embodiment further includes a reinforcing bracket 41 disposed in the chamber of the connecting frame 2, and the reinforcing bracket 41 is disposed corresponding to the position where the bolt pair 5 is inserted; the two ends of the reinforcing bracket 41 in the front-rear direction of the vehicle are respectively abutted against the two inner walls opposite to each other in the chamber, and a limiting groove 410 is formed on the reinforcing bracket 41, and the part of the bolt pair 5 located in the chamber is located in the limiting groove 410. The reinforcing bracket 41 is disposed at the position where the bolt pair 5 is inserted, and the reinforcing bracket 41 can form a support for the connecting frame 2 in the insertion direction of the bolt pair 5, and can effectively prevent the deformation of the connecting frame 2 that may be caused when the bolt pair 5 is tightened. By providing the limiting groove 410 on the reinforcing bracket 41, the bolt of the reinforcing bracket 41 is disposed in the limiting groove 410, and a mutual position restriction can be formed between the reinforcing bracket 41 and the bolt pair 5, so that the connecting frame 2, the reinforcing bracket 41, the frame crossbeam 1 and the bolt pair 5 form a structurally stable whole, which is conducive to enhancing the structural stability of the connection part of the frame crossbeam 1 and the connecting frame 2.

[0050] In summary, in the frame crossbeam connection structure of the present embodiment, the connecting frame 2 adopts a box-shaped structure, and the projection of its overlap interface 20 in the length direction of the frame longitudinal beam 3 is in a "V" shape. The first end face 200 and the second end face 201 at the overlap interface 20 are overlapped and fixedly connected with the side wall and the bottom wall of the frame longitudinal beam 3 respectively, so that the contact area between the connecting frame 2 and the frame longitudinal beam 3 is greatly increased, which can effectively increase the length of the weld between the connecting frame 2 and the frame longitudinal beam 3, improve the durability of the weld and the load bearing capacity of the connecting frame 2; at the same time, the insertion port 23 of the connecting frame 2 and the frame crossbeam 1 adopts an insertion and fixed connection method, so that the connection firmness between the frame crossbeam 1 and the connecting frame 2 is guaranteed, thereby improving the connection stability between the frame crossbeam 1 and the frame longitudinal beam 3.

[0051] Embodiment 2

[0052] This embodiment relates to a vehicle, on the frame of which the frame crossbeam connection structure provided in the first embodiment is provided.

[0053] It should be noted that the above-mentioned frame crossbeam connection structure can be arranged between each frame crossbeam 1 and frame longitudinal beam 3 in the frame, for example, it can be arranged between the fourth crossbeam at the rear of the workshop and the frame longitudinal beam 3. Due to the arrangement of the overlap port 20 and the insertion port 23 on the connecting frame 2, not only the weld length between the connecting frame 2 and the frame longitudinal beam 3 is increased, the load bearing capacity and durability of the connecting frame 2 are improved, the occurrence of weld cracking of the connecting frame 2 in the later stage can be reduced, and the connection reliability between the connecting frame 2 and the frame crossbeam 1 is guaranteed; this has a good effect on improving the service life of the connecting frame 2 and the performance of the frame structure.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A frame crossbeam connection structure, characterized in that: It comprises connecting frames (2) respectively arranged at both ends of a frame crossbeam (1), wherein the connecting frames (2) are used to fix the ends of the frame crossbeam (1) to the frame longitudinal beam (3) on the corresponding side; The connecting frame (2) adopts a box-shaped structure, and two ends of the connecting frame (2) are respectively provided with a docking port (20) and an insertion port (23); The end of the frame crossbeam (1) is inserted into the connecting frame (2) through the insertion opening (23); the overlap opening (20) is formed with a first end surface (200) overlapped and connected to the inner side of the frame longitudinal beam (3), and a second end surface (201) overlapped and connected to the bottom of the frame longitudinal beam (3).

2. The frame crossbeam connection structure according to claim 1, characterized in that: From the insertion opening (23) toward the docking opening (20), the cross-sectional dimensions of the chamber in the connecting frame (2) are gradually increased.

3. The frame crossbeam connection structure according to claim 1, characterized in that: The connecting frame (2) comprises a first plate body (21) and a second plate body (22) which are buckled and connected to each other, and a chamber in the connecting frame (2) is formed between the first plate body (21) and the second plate body (22).

4. The frame crossbeam connection structure according to claim 3, characterized in that: The first plate body (21) and the second plate body (22) are buckled together in the length direction of the frame longitudinal beam (3), and relative to the buckling surfaces of the two, the first plate body (21) and the second plate body (22) adopt a symmetrical structure.

5. The frame crossbeam connection structure according to claim 1, characterized in that: A reinforcing plate (42) is provided on the inner wall of the chamber in the connecting frame (2), and the reinforcing plate (42) is located at the bending portion of the connecting frame (2).

6. The frame crossbeam connection structure according to claim 1, characterized in that: The first end surface (200) and the second end surface (201) are both fully welded and fixedly connected to the vehicle frame longitudinal beam (3).

7. The vehicle frame cross member connection structure according to any one of claims 1 to 6, characterized in that: The end of the frame crossbeam (1) is fixedly connected to the connecting frame (2) via a bolt pair (5).

8. The vehicle frame crossbeam connection structure according to claim 7, characterized in that: The bolt pair (5) penetrates the frame crossbeam (1) and the connecting frame (2) in the front-rear direction of the vehicle.

9. The vehicle frame crossbeam connection structure according to claim 8, characterized in that: It also includes a reinforcing bracket (41) arranged in the cavity of the connecting frame (2), and the reinforcing bracket (41) is arranged corresponding to the position where the bolt pair (5) is inserted; the two ends of the reinforcing bracket (41) in the front-rear direction of the vehicle respectively abut against two opposite inner walls of the cavity, and a limiting groove (410) is formed on the reinforcing bracket (41), and the part of the bolt pair (5) located in the cavity is located in the limiting groove (410).

10. A vehicle, characterized in that: The frame of the vehicle is provided with a frame cross member connection structure according to any one of claims 1 to 9.

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