Frame cross beam

Abstract

The utility model relates to the technical field of automobile frames, in particular to a frame cross member which comprises a lower mounting seat, an upper mounting seat and two bearing plates which are integrally formed, the extending directions of the upper mounting seat, the lower mounting seat and the bearing plates are the same, and the two bearing plates are oppositely arranged and mounted between the upper mounting seat and the lower mounting seat. The connecting positions of the supporting plate and the upper installation base and the lower installation base are in smooth transition, the thickness of the upper installation base and the thickness of the lower installation base are both larger than that of the supporting plate, and therefore the bending and twisting resistance of the cross beam can be improved while the production difficulty of the cross beam is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile frames, and in particular to a frame crossbeam. Background Art

[0002] The crossbeam is an important component of the vehicle frame. During the driving process of the vehicle, it needs to withstand the bending and torsional forces caused by the uneven road surface, which makes the structure and mechanical properties of the crossbeam have a greater impact on the performance of the entire vehicle.

[0003] At present, the cross beams of heavy-duty vehicles are mostly made of specific automotive steel through stamping, bending or stamping and welding. This means that the cross beams use many parts, and the specific automotive steel has a large dead weight, which makes the cross beams not only complicated to produce, but also poor in bending and torsion resistance. Utility Model Content

[0004] The present application provides a frame crossbeam to solve the problem that the existing crossbeams of heavy-duty vehicles are not only complicated to produce but also have poor bending and torsion resistance.

[0005] In order to solve the above problems, this application adopts the following technical solutions:

[0006] The present application provides a frame crossbeam, comprising an integrally formed lower mounting seat, an upper mounting seat and two support plates, wherein the upper mounting seat, the lower mounting seat and the support plates have the same extension direction, the two support plates are arranged opposite to each other, and the support plate is located between the upper mounting seat and the lower mounting seat, the connection between the support plate and the upper mounting seat and the lower mounting seat is a smooth transition, and the thickness of the upper mounting seat and the lower mounting seat is greater than the thickness of the support plate.

[0007] In some possible designs, the length of the upper mounting seat is smaller than that of the lower mounting seat, and the length of the side of the support plate connected to the upper mounting seat is smaller than the length of the side connected to the lower mounting seat.

[0008] In some possible designs, both ends of the support plate are configured to be arc-shaped to form grooves at both ends of the support plate.

[0009] In some possible designs, a plurality of weight-reducing holes are provided on the support plate.

[0010] In some possible designs, the support plate, the upper mounting seat and the lower mounting seat are all made of aluminum alloy plates.

[0011] In some possible designs, at least one first arc-shaped groove is disposed on both sides of the extension direction of the upper mounting seat, and at least one second arc-shaped groove is disposed on both sides of the extension direction of the lower mounting seat.

[0012] In some possible designs, a first arc-shaped groove is provided on each side of the upper mounting seat, and the first arc-shaped groove extends from one end of the upper mounting seat to the other end of the upper mounting seat, and a second arc-shaped groove is provided on each side of the lower mounting seat, and the second arc-shaped groove extends from one end of the lower mounting seat to the other end of the lower mounting seat.

[0013] In some possible designs, the radius of the first arc-shaped groove is smaller than the radius of the second arc-shaped groove.

[0014] In some possible designs, a third arc-shaped groove is respectively provided at both ends of the upper mounting seat and the lower mounting seat, and the third arc-shaped groove is located between the two support plates.

[0015] In some possible designs, the upper mounting seat and the lower mounting seat are parallel to each other, and both the upper mounting seat and the lower mounting seat are provided with at least one longitudinal beam mounting hole, and the upper mounting seat is also provided with at least one accessory mounting hole.

[0016] Beneficial effects of the present application: The present application provides a frame crossbeam, which reduces the difficulty of producing the crossbeam through an integrally formed lower mounting seat, an upper mounting seat and a supporting plate. At the same time, the supporting plate is installed between the upper mounting seat and the lower mounting seat, and the extension directions of the supporting plate, the upper mounting seat and the lower mounting seat are the same, and the thicknesses of the upper mounting seat and the lower mounting seat are both greater than the thickness of the supporting plate. Therefore, through the non-uniform thickness cross-section design of the upper mounting seat, the lower mounting seat and the supporting plate, equal strength force is achieved on the entire crossbeam, stress concentration is reduced, and the crossbeam's ability to resist large bending and torsion is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A three-dimensional diagram of a frame crossbeam provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 A side view of a frame cross member in FIG.

[0020] Figure 3 for Figure 1 A front view of a frame cross member in FIG.

[0021] Figure 4 for Figure 1 A bottom view of the frame cross member in FIG.

[0022] Figure 5 for Figure 1 A top view of the frame crossbar in FIG.

[0023] Description of reference numerals:

[0024] 1- Upper mounting seat;

[0025] 2-Lower mounting seat;

[0026] 3- Support plate;

[0027] 4-longitudinal beam mounting hole;

[0028] 5-Accessory mounting holes;

[0029] 6-Weight reduction hole;

[0030] 7- first arc groove;

[0031] 8- third arc groove;

[0032] 9-groove;

[0033] 10- Second arc groove.

[0034] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0036] Secondly, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0037] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] As mentioned in the background technology, the crossbeams of heavy trucks are mostly traditional steel structures, which are generally made of multiple specially customized automotive steels that are stamped and welded. That is, during production, a large number of parts need to be processed, and the parts are heavy, which makes the production and manufacturing process of the crossbeams complicated, and the crossbeams have poor resistance to large bending and torsional motion after processing.

[0039] In order to avoid the above-mentioned problems, an embodiment of the present application provides a frame cross beam, in which the lower mounting seat, the upper mounting seat and the support plate are integrally formed, and the cross beam as a whole is designed with a non-uniform thickness cross section, which not only reduces the difficulty of processing the cross beam, but also helps to reduce the weight of the cross beam, reduce stress concentration, and enhance the cross beam's ability to resist large bending and torsional changes.

[0040] The technical solutions shown in the present application are described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or in combination with each other, and the same or similar contents will not be described repeatedly in different embodiments.

[0041] See also Figure 1 and Figure 3 As shown, this embodiment provides a frame crossbeam, including a lower mounting seat 2, an upper mounting seat 1 and two supporting plates 3.

[0042] For ease of understanding, Figure 1 Mutually perpendicular X, Y, and Z directions are marked to assist in the description.

[0043] The extension directions of the lower mounting seat 2, the upper mounting seat 1 and the two support plates 3 are the same, that is, the lengths in the X direction are the same, and the two support plates 3 are relatively arranged between the upper mounting seat 1 and the lower mounting seat 2, that is, on the opposite sides of the support plates 3, one side is connected to the upper mounting seat 1, and the other side is connected to the lower mounting seat 2, and the two support plates 3 are symmetrically arranged on both sides of the central axis of the upper mounting seat 1 or the lower mounting seat 2, so that the distance between the upper mounting seat 1 and the lower mounting seat 2 is maintained to match the width of the support plates 3 (the length in the Z direction), and there is also a large distance between the two support plates 3, so that a structure similar to a U-shaped structure is formed between the support plates 3 and the upper mounting seat 1 and the lower mounting seat 2.

[0044] The connection between the support plate 3 and the upper mounting seat 1 and the lower mounting seat 2 is a smooth transition to avoid stress concentration, and the thickness of the support plate 3 (the length in the Z direction) is smaller than the thickness of the upper mounting seat 1 (the length in the Z direction) and the thickness of the lower mounting seat 2 (the length in the Y direction), so that the cross section of the frame beam is formed as follows: Figure 3 The structure shown.

[0045] It is understandable that the lower mounting seat 2, the upper mounting seat 1 and the support plate 3 are integrally formed, and the lower mounting seat 2, the upper mounting seat 1 and the support plate 3 can be made of materials that can meet the requirements of vehicle use, which is not limited in this embodiment.

[0046] For example, the lower mounting seat 2, the upper mounting seat 1 and the support plate 3 are all aluminum alloy plates. Aluminum alloy is an alloy with aluminum as the base and a certain amount of other alloying elements added. It has low density, high strength, good casting performance and plastic processing performance, and is one of the light metal materials. By processing with aluminum alloy as the base material, the lower mounting seat 2, the upper mounting seat 1 and the support plate 3 are formed at one time without welds, so that the crossbeam has no risk of stress concentration, which can make up for the disadvantages of aluminum alloy material with low hardness and small elongation compared with steel plate material, give full play to the advantage of aluminum alloy material in lightweight, and the processing technology of aluminum alloy is simple, which helps to reduce production difficulty and production cost.

[0047] It is understandable that the upper mounting seat 1 and the lower mounting seat 2 can be parallel to each other or be arranged at a certain angle. Of course, the angle between the upper mounting seat 1 and the lower mounting seat 2 needs to be an acute angle, which is not limited in this embodiment.

[0048] Exemplarily, the upper mounting seat 1 and the lower mounting seat 2 are parallel plates, and the surfaces of the upper mounting seat 1 and the lower mounting seat 2 away from each other are flat, so as to facilitate installation of other accessories on the upper mounting seat 1 and the lower mounting seat 2 .

[0049] In addition, the cross section of the frame beam is a non-uniform thickness cross section. The thickness of the upper mounting seat 1 and the lower mounting seat 2 is relatively large, which can effectively bear the force, while the thickness of the support plate 3 is relatively small, which can better conduct energy between the upper mounting seat 1 and the lower mounting seat 2. Such a setting method can, on the one hand, reduce the weight of the beam, and on the other hand, such a structure can achieve equal strength force on the entire beam. While making the beam lightweight and easy to process, it can also enhance the beam's ability to resist large bending and torsion, and reduce the fracture failure rate of the beam due to stress concentration.

[0050] For some possible implementations, see Figure 2As shown, the length of the upper mounting seat 1 is smaller than that of the lower mounting seat 2, and the length of the side of the support plate 3 connected to the upper mounting seat 1 is smaller than the length of the side connected to the lower mounting seat 2, that is, if the ends of the sides of the upper mounting seat 1 and the lower mounting seat 2 in the X direction are connected, a similar Figure 2 The trapezoidal structure is narrow at the top and wide at the bottom.

[0051] It is understandable that both end surfaces of the upper mounting seat 1 and the lower mounting seat 2 can be configured as inclined surfaces so as to match the trapezoidal structure to help improve the bending and torsion resistance of the crossbeam.

[0052] Such a structural design can increase the space for the arrangement of the vehicle's air pipes and wiring harnesses at both ends of the beam, making it easier to install the vehicle's air pipes and wiring harnesses. At the same time, such a structural design also helps to improve the overall bending and torsional resistance of the beam.

[0053] It is understandable that the length of the support plate 3 in the X direction also changes accordingly, that is, the length in the X direction can gradually increase from one end close to the upper mounting seat 1 along the direction close to the lower mounting seat 2 to better cooperate with the installation of the vehicle air pipe and wiring harness.

[0054] Of course, the installation position of the vehicle air pipe and wiring harness is mainly in the middle of the support plate 3 or biased towards the upper mounting seat 1. Therefore, the length from the upper end of the support plate 3 (close to the end of the upper mounting seat 1) to the middle can be slightly shorter, while the length from the middle to the lower end remains unchanged. Of course, the connection between the two requires an arc transition to avoid stress concentration.

[0055] Exemplarily, both ends of the support plate 3 are arranged to be arc-shaped to form grooves 9 at both ends of the support plate 3, that is, the side edges of the support plate 3 in the Z direction are arranged to be arc-shaped and recessed inward to form the groove 9. Of course, the length of the support plate 3 in the X direction gradually increases from the upper mounting seat 1 to the lower mounting seat 2.

[0056] This setting method can increase the space used to install the vehicle's air pipes and wiring harnesses, making the layout of the vehicle's air pipes and wiring harnesses beautiful, and can also simultaneously improve the overall bending and torsional resistance of the crossbeam.

[0057] In some possible embodiments, a plurality of weight-reducing holes 6 are provided on the support plate 3, that is, the number of the weight-reducing holes 6 can be selected according to actual conditions. Providing the weight-reducing holes 6 can reduce the weight of the support plate 3 and also reduce the amount of material used, so as to further reduce the production cost of the beam.

[0058] It is understandable that the weight-reducing hole 6 can be any shape, such as a regular shape such as a circle, an ellipse, a square, or other irregular shapes, as long as it can reduce the weight of the support plate 3, and this embodiment does not limit it. However, it is preferably a smooth transition shape such as a circle or an ellipse to avoid stress concentration points.

[0059] For some possible implementations, see Figure 4 and Figure 5 As shown, at least one first arc groove 7 is provided on both sides of the extension direction of the upper mounting seat 1, and at least one second arc groove 10 is provided on both sides of the extension direction of the lower mounting seat 2, that is, the first arc groove 7 and the second arc groove 10 are respectively provided on both sides of the upper mounting seat 1 and the lower mounting seat 2 extending along the X direction.

[0060] Among them, when two or more first arc grooves 7 and second arc grooves 10 are provided, taking the first arc groove 7 as an example, it is preferable that two adjacent first arc grooves 7 have a smooth transition, that is, a plurality of first arc grooves 7 can form a wave-like structure, thereby avoiding the problem of stress concentration at the connection of adjacent first arc grooves 7, which can reduce weight, reduce the production cost of the beam, and enhance the bending and torsional resistance of the beam.

[0061] Of course, the configuration of the second arc groove 10 is similar to that of the first arc groove 7 , and will not be described in detail in this embodiment.

[0062] It is understandable that the number and size of the first arc groove 7 and the second arc groove 10 can be set according to actual needs as long as they do not adversely affect the performance of the beam, and this embodiment does not limit them.

[0063] Exemplarily, a first arc groove 7 is provided on each side of the upper mounting seat 1, and the first arc groove 7 extends from one end of the upper mounting seat 1 to the other end of the upper mounting seat 1. It can be understood that the length of the first arc groove 7 in the X direction is slightly smaller than the length of the upper mounting seat 1 in the X direction. A second arc groove 10 is also provided on each side of the lower mounting seat 2, and the second arc groove 10 extends from one end of the lower mounting seat 2 to the other end of the lower mounting seat 2. It can be understood that the length of the second arc groove 10 in the X direction is slightly smaller than the length of the lower mounting seat 2 in the X direction.

[0064] Specifically, through topological optimization analysis, it is found that the upper mounting seat 1 and the lower mounting seat 2 are subjected to very little force at the locations where the first arc groove 7 and the second arc groove 10 are arranged. By arranging the first arc groove 7 and the second arc groove 10, not only the weight of the beam can be effectively reduced, but also the first arc groove 7 and the second arc groove 10 are both large arc grooves, which can improve material utilization and facilitate energy transfer.

[0065] Furthermore, the radius of the first arc groove 7 is smaller than the radius of the second arc groove 10, so as to further reduce the weight of the beam as much as possible, improve the utilization rate of materials and reduce the cost of the beam while ensuring the performance of the beam and facilitating the installation of the beam.

[0066] In some possible embodiments, a third arc groove 8 is provided at each end of the upper mounting seat 1 and the lower mounting seat 2 (the sides extending along the Y direction), and the third arc groove 8 is located between the two support plates 3. Of course, the third arc groove 8 can be located in the middle of the two support plates 3, that is, the distance between the third arc groove 8 and the two support plates 3 is equal. It can be understood that the size of the third arc groove 8 should not be too large so as not to affect the connection between the support plate 3 and the upper mounting seat 1 and the lower mounting seat 2.

[0067] The presence of the third arc groove 8 can, on the one hand, reduce the weight of the beam and reduce the production cost of the beam; on the other hand, it can effectively transfer energy, evenly distribute the force on the beam, and enhance the overall bending and torsional resistance of the beam.

[0068] In some possible implementations, at least one longitudinal beam mounting hole 4 is provided on the upper mounting seat 1 and the lower mounting seat 2, so that the cross beam can be connected to the longitudinal beam through the longitudinal beam mounting hole 4. At least one accessory mounting hole 5 is also provided on the upper mounting seat 1, so that the cross beam can be connected to other accessories to be installed through the accessory mounting hole 5.

[0069] The addition of the accessory mounting holes 5 and the longitudinal beam mounting holes 4 helps to realize the integrated modular design of the cross beam, making it easier to connect the cross beam with other components.

[0070] The positions of the accessory mounting holes 5 and the longitudinal beam mounting holes 4 may be selected according to installation requirements, and are not limited in this embodiment.

[0071] Exemplarily, the longitudinal beam mounting holes 4 can be arranged at both ends of the upper mounting seat 1 and the lower mounting seat 2 (along the X direction), and the longitudinal beam mounting holes 4 and the accessory mounting holes 5 both extend along the Z direction. The longitudinal beam mounting holes 4 on the upper mounting seat 1 and the lower mounting seat 2 correspond to each other to effectively connect with the longitudinal beams, and the accessory mounting holes 5 are arranged between the longitudinal beam mounting holes 4 at both ends of the upper mounting seat 1, and the accessory mounting holes 5 can be arranged along the edge of the first arc-shaped groove 7.

[0072] With this arrangement, the stress on the middle of the longitudinal beam mounting hole 4 and the outer side of the accessory mounting hole 5 is very small. Together with the first arc groove 7 and the second arc groove 10, a lightweight design of the crossbeam can be achieved, material utilization is improved, and mechanical energy transmission is facilitated.

[0073] In addition, in order to avoid collision between the crossbeam and other components during use, the height (length in the Z direction) of the crossbeam of this embodiment can be reduced so that the side of the upper mounting seat 1 away from the lower mounting seat 2 is lower than the wing surface of the frame longitudinal beam, and the side of the lower mounting seat 2 away from the upper mounting seat 1 maintains a safe distance from the vehicle's drive shaft, so that the crossbeam will not collide with the longitudinal beam or the drive shaft, effectively improving safety.

[0074] Those skilled in the art will easily conceive of other implementations of the present application after considering the specification and practicing the technical solutions disclosed herein.

[0075] This application is intended to cover any modifications, uses or adaptive changes of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the technical field that are not disclosed in this application.

[0076] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A frame crossbeam, characterized in that: It includes an integrally formed lower mounting seat, an upper mounting seat and two support plates, the upper mounting seat, the lower mounting seat and the support plates have the same extension direction, the two support plates are arranged opposite to each other, and the support plate is located between the upper mounting seat and the lower mounting seat, the connection between the support plate and the upper mounting seat and the lower mounting seat is a smooth transition, and the thickness of the upper mounting seat and the lower mounting seat is greater than the thickness of the support plate.

2. The frame crossbeam according to claim 1, characterized in that: The length of the upper mounting seat is smaller than that of the lower mounting seat, and the length of a side of the support plate connected to the upper mounting seat is smaller than the length of a side of the support plate connected to the lower mounting seat.

3. The frame cross member according to claim 2, characterized in that: The two ends of the support plate are arranged in an arc shape to form grooves at the two ends of the support plate.

4. The frame cross member according to claim 3, characterized in that: The support plate is provided with a plurality of weight-reducing holes.

5. The frame cross member according to any one of claims 1 to 4, characterized in that: The support plate, the upper mounting seat and the lower mounting seat are all aluminum alloy plates.

6. The frame cross member according to claim 5, characterized in that: At least one first arc-shaped groove is disposed on both sides of the upper mounting seat in the extending direction, and at least one second arc-shaped groove is disposed on both sides of the lower mounting seat in the extending direction.

7. The frame cross member according to claim 6, characterized in that: A first arc-shaped groove is respectively arranged on both sides of the upper mounting seat, and the first arc-shaped groove extends from one end of the upper mounting seat to the other end of the upper mounting seat. A second arc-shaped groove is respectively arranged on both sides of the lower mounting seat, and the second arc-shaped groove extends from one end of the lower mounting seat to the other end of the lower mounting seat.

8. The frame cross member according to claim 7, characterized in that: The radius of the first arc-shaped groove is smaller than the radius of the second arc-shaped groove.

9. The frame cross member according to claim 6, characterized in that: A third arc groove is respectively arranged at both ends of the upper mounting seat and the lower mounting seat, and the third arc groove is located between the two supporting plates.

10. The frame cross member according to claim 5, characterized in that: The upper mounting seat and the lower mounting seat are parallel to each other, and both the upper mounting seat and the lower mounting seat are provided with at least one longitudinal beam mounting hole, and the upper mounting seat is also provided with at least one accessory mounting hole.

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