Cross beam assembly and frame assembly

Abstract

The utility model relates to the technical field of automobile frames, in particular to a cross beam assembly and a frame assembly.The cross beam assembly comprises an aluminum alloy cross beam body which comprises a first mounting base and a second mounting base which are arranged in an up-down relation, and the extending directions of the first mounting base and the second mounting base are the same; the two aluminum alloy connecting plates are oppositely arranged at the two ends of the first mounting seat; the two steel connecting plates are oppositely arranged at the two ends of the second mounting base, each steel connecting plate comprises a second mounting part, a third connecting plate and a third mounting part which are sequentially connected, the second mounting parts are used for being connected with the second mounting base, and the third connecting plates are obliquely arranged; one side, connected with the third connecting plate, of the third mounting part is positioned below the second mounting part; and the aluminum alloy connecting plate and the third mounting part are also used for being connected with a longitudinal beam, so that the cross beam assembly has the advantages of high reliability and light weight.

Description

Technical Field

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

[0002] The frame assembly generally includes longitudinal beams and cross beams, and the transition zone cross beam assembly is a cross beam structure in the middle transition zone of the frame assembly. Its two ends are used to connect with the longitudinal beams. It can absorb and alleviate the alternating loads on the frame side and is a relatively important component of the frame.

[0003] During the driving process of the vehicle, the transition zone crossbeam assembly will be subjected to continuous bending moment and torque, so there are certain requirements for the stiffness and strength of the transition zone crossbeam assembly. In order to meet the requirements of stiffness and strength, the transition zone crossbeam assembly is generally made of automotive steel by stamping and welding.

[0004] This traditional steel beam assembly is not only heavy and difficult to meet the current demand for lightweighting, but also prone to fracture and failure due to stress concentration. Utility Model Content

[0005] The present application provides a crossbeam assembly and a frame assembly to solve the problem that the existing transition zone crossbeam assembly is made of a steel crossbeam, which is not only heavy and difficult to meet the current lightweight demand, but also prone to fracture and failure due to stress concentration.

[0006] In order to solve the above problems, this application adopts the following technical solutions:

[0007] The first aspect of the present application provides a crossbeam assembly for connecting to a longitudinal beam of a vehicle frame, comprising:

[0008] An aluminum alloy crossbeam body, comprising a first mounting seat and a second mounting seat arranged in a vertical relationship, and the first mounting seat and the second mounting seat extend in the same direction;

[0009] Two aluminum alloy connecting plates, which are arranged oppositely at two ends of the first mounting seat;

[0010] Two steel connecting plates, which are arranged at two ends of the second mounting seat, the steel connecting plates include a second mounting portion, a third connecting plate and a third mounting portion connected in sequence, the second mounting portion is used to connect with the second mounting seat, and the third connecting plate is arranged obliquely so that the side of the third mounting portion connected to the third connecting plate is located below the second mounting portion;

[0011] Wherein, the aluminum alloy connecting plate and the third mounting portion are also used for connecting with the longitudinal beam.

[0012] In some possible designs, the aluminum alloy beam body also includes two support plates integrally formed with the first mounting seat and the second mounting seat, and the two support plates are arranged side by side between the first mounting seat and the second mounting seat to connect the first mounting seat and the second mounting seat, and the extension direction of the support plates is the same as that of the first mounting seat.

[0013] In some possible designs, the aluminum alloy connecting plate and the first mounting seat, as well as the second mounting portion and the second mounting seat are riveted.

[0014] In some possible designs, the first mounting seat is provided with a plurality of first mounting holes for connecting to the aluminum alloy connecting plate, the second mounting seat is provided with a plurality of second mounting holes for connecting to the second mounting portion, and each of the support plates is provided with at least one first mounting hole and a second mounting hole on both sides thereof.

[0015] In some possible designs, at least one first arc-shaped groove is disposed on both sides of the extension direction of the first mounting seat, and at least one second arc-shaped groove is disposed on both sides of the extension direction of the second mounting seat.

[0016] In some possible designs, a third arc-shaped groove is respectively provided at both ends of the first mounting seat and the second mounting seat, and the third arc-shaped groove is located between the two supporting plates.

[0017] In some possible designs, the thickness of the first mounting seat and the second mounting seat are both greater than the thickness of the support plate.

[0018] In some possible designs, one end of the aluminum alloy connecting plate is connected to the side of the first mounting seat away from the second mounting seat, and the other end is bent downward to form a first mounting portion for connecting to the longitudinal beam, and the thickness of the first mounting portion is greater than the thickness of the end of the aluminum alloy connecting plate connected to the first mounting seat.

[0019] In some possible designs, at least one weight-reducing hole is provided on the second mounting portion.

[0020] A second aspect of the present application provides a vehicle frame assembly, comprising a longitudinal beam and a cross beam assembly as described in any one of the first aspects, wherein the cross beam assembly is connected to the longitudinal beam.

[0021] The beneficial effects of the present application are as follows: in the crossbeam assembly and frame assembly of the present application, the crossbeam assembly includes an aluminum alloy crossbeam body, an aluminum alloy connecting plate and a steel connecting plate, the two aluminum alloy connecting plates are relatively arranged at the two ends of the first mounting seat of the aluminum alloy crossbeam body, the two steel connecting plates are relatively arranged at the two ends of the second mounting seat of the aluminum alloy crossbeam body, the second mounting portion of the steel connecting plate is used to connect with the second mounting seat, the third connecting plate of the steel connecting plate is tilted so that the third mounting portion of the steel connecting plate and the side connected to the third connecting plate are located below the second mounting seat, so that after the third mounting portion and the aluminum alloy connecting plate are installed on the longitudinal beam, the crossbeam body is raised, which can avoid collision between the drive shaft and the crossbeam body and improve the safety of vehicle driving. At the same time, the aluminum alloy connecting plate is made of aluminum alloy, and the two aluminum alloy connecting plates have the same structure, and can be extruded by the same set of molds, which greatly reduces the production cost. In addition, the aluminum alloy connecting plate, the aluminum alloy crossbeam body and the steel connecting plate are used in combination, so that the crossbeam assembly can meet the requirements of lightweight and improve the reliability of the crossbeam assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 A three-dimensional diagram of a crossbeam assembly provided in an embodiment of the present application;

[0024] Figure 2 for Figure 1 Left side view of the crossbeam assembly in FIG.

[0025] Figure 3 for Figure 1 A rear view of the crossbeam assembly in FIG.

[0026] Figure 4 for Figure 1 The right side view of the crossbeam assembly in FIG.

[0027] Figure 5 for Figure 1 A top view of the crossbeam assembly in FIG.

[0028] Figure 6 for Figure 1 Structural schematic diagram of the steel connecting plate in FIG.

[0029] Figure 7 for Figure 1 Schematic diagram of the assembly structure of the crossbeam assembly and the longitudinal beam.

[0030] Reference numerals:

[0031] 001-longitudinal beam;

[0032] 100-aluminum alloy crossbeam body; 110-first mounting seat; 120-second mounting seat; 130-support plate; 131-second weight-reducing hole; 140-third arc groove; 150-first arc groove; 160-second arc groove;

[0033] 200-aluminum alloy connecting plate; 210-first mounting portion, 220-third mounting hole;

[0034] 300 - steel connecting plate; 310 - second mounting portion; 320 - third connecting plate; 330 - third mounting portion, 340 - fourth mounting hole, 350 - first weight-reducing hole.

[0035] 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

[0036] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0037] Secondly, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] Then, it should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0040] The transition zone crossbeam assembly is an important part of the frame assembly, which can effectively absorb and alleviate the alternating load of the frame. With the development of the automobile industry, the frame assembly, as the skeleton of the automobile, is also constantly developing and innovating, and gradually requires the transition zone crossbeam assembly to have the properties of high strength, high rigidity and light weight.

[0041] When commercial vehicles are driving, the transition zone crossbeam assembly is subjected to continuous torque and bending moment, making it difficult for the transition zone crossbeam assembly to have both lightweight and high strength properties.

[0042] In order to avoid the above problems, the present application provides a crossbeam assembly and a frame. The crossbeam assembly adopts a steel-aluminum hybrid structure, which solves the problem of high fracture failure rate caused by heavy weight and stress concentration of traditional steel crossbeam assembly. At the same time, it also has the characteristics of strong bending and torsion resistance, high stability, high degree of lightweight, simple production process, and no specific requirements for frame layout space.

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the crossbeam assembly provided in this embodiment is a component of the frame assembly, which is used to be connected to the longitudinal beam 001 of the frame assembly. The crossbeam assembly includes an aluminum alloy crossbeam body 100, an aluminum alloy connecting plate 200, and a steel connecting plate 300.

[0045] The aluminum alloy cross beam body 100 includes a first mounting seat 110 and a second mounting seat 120 which are arranged in a vertical relationship, and the first mounting seat 110 and the second mounting seat 120 extend in the same direction. Two aluminum alloy connecting plates 200 are provided, and the two aluminum alloy connecting plates 200 are relatively arranged at the two ends of the first mounting seat 110, that is, the two aluminum alloy connecting plates 200 have the same structure, and the two aluminum alloy connecting plates 200 are symmetrically distributed at the two ends of the first mounting seat 110 along the center line. The aluminum alloy connecting plates 200 are provided with third mounting holes 220, and can be connected to the longitudinal beam 001 through the third mounting holes 220. Two steel connecting plates 300 are also provided, and are relatively arranged at the two ends of the second mounting seat 120. Of course, the steel connecting plates 300 are also provided with fourth mounting holes 340, and are connected to the longitudinal beam 001 through the fourth mounting holes 340.

[0046] Among them, the steel connecting plate 300 also includes a second mounting portion 310, a third connecting plate 320 and a third mounting portion 330 connected in sequence. The second mounting portion 310, the third connecting plate 320 and the third mounting portion 330 can be integrally formed to improve strength and reduce stress concentration points. The second mounting portion 310 is used to connect with the second mounting seat 120, and the third connecting plate 320 is tilted so that the side where the third mounting portion 330 is connected to the third connecting plate 320 is located below the second mounting portion 310, that is, the side of the third connecting plate 320 with a higher height in the Z-axis direction is connected to the second mounting portion 310, and the side with a lower height is connected to the third mounting portion 330, so that the height of the third mounting portion 330 in the Z-axis direction is lower than the height of the second mounting portion 310. The second mounting portion 310 is connected to the second mounting seat 120, and the third mounting portion 330 is connected to the longitudinal beam 001. Therefore, after being connected to the longitudinal beam 001, the aluminum alloy crossbeam body 100 can be effectively lifted, so that the second mounting seat 120 keeps a distance from the transmission shaft, avoiding collision between the transmission shaft and the aluminum alloy crossbeam body 100, and improving the safety of vehicle operation.

[0047] In addition, the aluminum alloy connecting plate 200 and the aluminum alloy cross beam body 100 can be produced by extrusion molding, and the two aluminum alloy connecting plates 200 have the same structure. Therefore, when molding the aluminum alloy connecting plates 200, only one mold is needed, which can save a set of molds and reduce the development cost of the cross beam assembly. Of course, other processing methods are also possible, and this embodiment does not limit them here.

[0048] When aluminum alloy contacts steel, there is a risk of galvanic corrosion. To avoid the risk of mixed electrochemical corrosion of steel and aluminum, the surfaces of the aluminum alloy beam body 100 and the aluminum alloy connecting plate 200 may be passivated, that is, the aluminum alloy beam body 100 and the aluminum alloy connecting plate 200 may be insulated to reduce the risk of galvanic corrosion.

[0049] The crossbeam assembly provided in this embodiment is a steel-aluminum hybrid connection design. The aluminum alloy connecting plate 200 and the aluminum alloy crossbeam body 100 are relatively light in weight. When used in combination with the steel connecting plate 300, both lightweight and strength of the crossbeam assembly can be achieved. That is, the steel connecting plate 300 can still ensure connection strength after the inclined third connecting plate 320 is set, which can keep the aluminum alloy crossbeam body 100 away from the transmission shaft to avoid collision, and will not increase stress concentration points on the steel connecting plate 300, so that the overall strength of the crossbeam assembly meets the requirements. At the same time, the aluminum alloy connecting plate 200 and the aluminum alloy crossbeam body 100 are both extruded, and the production process is relatively simple.

[0050] In addition, during assembly, the aluminum alloy connecting plate 200 is fixed on the first mounting seat 110, and the steel connecting plate 300 is fixed on the second mounting seat 120. The fixing method can be welding, bolt connection or other connection methods. As long as it can be effectively connected, this embodiment does not limit it.

[0051] Exemplarily, the aluminum alloy connecting plate 200 and the first mounting seat 110, and the first mounting portion 210 and the second mounting seat 120 are all riveted, preferably connected by rivet bolts. The rivet connection utilizes the Hooke's principle to effectively improve the connection effect, and is also relatively easy to install.

[0052] At the same time, the aluminum alloy connecting plate 200, the steel connecting plate 300 and the longitudinal beam 001 are generally connected by bolts. In order to improve adaptability, standard holes commonly used in vehicle frames can be opened on the aluminum alloy connecting plate 200 and the steel connecting plate 300.

[0053] In some possible embodiments, the aluminum alloy beam body 100 also includes two support plates 130 integrally formed with the first mounting seat 110 and the second mounting seat 120, and the two support plates 130 are arranged side by side between the first mounting seat 110 and the second mounting seat 120 to connect the first mounting seat 110 and the second mounting seat 120, and the extension direction of the support plates 130 and the first mounting seat 110 is the same, both extending in the Y direction, that is, of the two opposite sides of the support plate 130, one side is connected to the first mounting seat 110, and the other side is connected to the second mounting seat 120, and the two support plates 130 are symmetrically arranged on both sides of the central axis of the first mounting seat 110 or the second mounting seat 120, so that a structure similar to a U-shaped structure is formed between the support plates 130 and the first mounting seat 110 and the second mounting seat 120.

[0054] The connections between the support plate 130 and the first mounting seat 110 and the second mounting seat 120 are all smooth transitions, that is, a large inner angle and a small outer angle design to avoid stress concentration and improve the mechanical properties of the aluminum alloy beam body 100.

[0055] In the present embodiment, the aluminum alloy beam body 100 is extruded using aluminum alloy as the base material, so that the first mounting seat 110, the second mounting seat 120 and the support plate 130 are formed in one step without welds, so that the aluminum alloy beam body 100 has no risk of stress concentration, which can make up for the disadvantages of aluminum alloy material having lower hardness and lower elongation than steel plate material, and give full play to the advantage of aluminum alloy material in terms of lightweight. In addition, the processing technology of aluminum alloy is simple, which helps to reduce production difficulty and production cost.

[0056] It can be understood that the first mounting seat 110 and the second mounting seat 120 can be parallel to each other or be arranged at a certain angle, as long as the two are arranged in an upper and lower relationship. Of course, the angle between the first mounting seat 110 and the second mounting seat 120 needs to be an acute angle, which is not limited in this embodiment.

[0057] Exemplarily, the first mounting seat 110 and the second mounting seat 120 are parallel plates, and the surfaces of the first mounting seat 110 and the second mounting seat 120 away from each other are flat, so as to facilitate installation of other accessories on the first mounting seat 110 and the second mounting seat 120 .

[0058] The thickness (length in the Z direction) of the support plate 130 may be made smaller than the thickness (length in the Z direction) of the first mounting seat 110 and the thickness (length in the Y direction) of the lower second mounting seat 120 .

[0059] This non-uniform thickness cross-section design allows the first mounting seat 110 and the second mounting seat 120 to be thicker and to be able to bear force effectively, while the support plate 130 is thinner and can better conduct energy between the first mounting seat 110 and the second mounting seat 120. That is, on the one hand, the weight of the aluminum alloy beam body 100 can be reduced, and on the other hand, such a structure can achieve equal strength force on the aluminum alloy beam body 100, which makes the aluminum alloy beam lightweight and easy to process, while also improving the beam's ability to resist large bending and torsion, and reducing the fracture failure rate of the beam due to stress concentration.

[0060] Furthermore, the length of the first mounting seat 110 is smaller than the length of the second mounting seat 120, and the length of the side of the support plate 130 connected to the first mounting seat 110 is smaller than the length of the side connected to the second mounting seat 120, that is, if the ends of the sides of the first mounting seat 110 and the second mounting seat 120 in the Y direction are connected, a trapezoidal structure that is narrow at the top and wide at the bottom can be formed.

[0061] It is understandable that both end surfaces of the first mounting seat 110 and the second mounting seat 120 can be set as inclined surfaces so that they are adapted to the trapezoidal structure to help improve the bending and torsional resistance of the aluminum alloy beam body 100.

[0062] Such a structural design can increase space for the arrangement of the vehicle's air pipes and wiring harnesses at both ends of the aluminum alloy crossbeam body 100, 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 bending and torsional resistance of the crossbeam assembly.

[0063] It is understandable that the length of the support plate 130 in the Y direction also changes accordingly, that is, the length in the Y direction can gradually decrease from the end close to the first mounting seat 110 along the direction close to the second mounting seat 120, so as to better cooperate with the installation of the vehicle air pipe and wiring harness.

[0064] Of course, the installation position of the vehicle air pipe and wiring harness is mainly in the middle of the support plate 130 or biased towards the side of the first mounting seat 110. Therefore, the length from the upper end of the support plate 130 (close to the end of the first mounting seat 110) 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.

[0065] Exemplarily, both ends of the support plate 130 are arranged to be arc-shaped to form grooves at both ends of the support plate 130, that is, the side edges of the support plate 130 in the Z direction are arranged to be arc-shaped and recessed inward to form grooves. Of course, the length of the support plate 130 in the X direction gradually increases from the upper mounting seat 1 to the lower mounting seat 2.

[0066] Such a setting method can increase the space for installing the air pipe and wiring harness of the whole vehicle, making the layout of the air pipe and wiring harness of the whole vehicle beautiful, and can also simultaneously improve the bending and torsional resistance of the aluminum alloy beam body 100.

[0067] At the same time, a plurality of second weight-reducing holes 131 may be provided on the support plate 130, that is, the number of the second weight-reducing holes 131 may be selected according to actual conditions. The provision of the second weight-reducing holes 131 may reduce the weight of the support plate 130, and also reduce the amount of material used, so as to further reduce the production cost of the crossbeam assembly.

[0068] It is understandable that the second weight-reducing hole 131 can be in 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 130, 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.

[0069] Furthermore, at least one first arc groove 150 is provided on both sides of the extension direction of the first mounting seat 110, and at least one second arc groove 160 is provided on both sides of the extension direction of the second mounting seat 120, that is, the first arc groove 150 and the second arc groove 160 are respectively provided on both sides of the first mounting seat 110 and the second mounting seat 120 extending along the Y direction.

[0070] Among them, when two or more first arc grooves 150 and second arc grooves 160 are provided, taking the first arc groove 150 as an example, it is preferable that two adjacent first arc grooves 150 have a smooth transition, that is, a plurality of first arc grooves 150 can form a wave-like structure, thereby avoiding the problem of stress concentration at the connection between adjacent first arc grooves 150, which can reduce weight and reduce the production cost of the aluminum alloy beam body 100, and can also enhance the bending and torsional resistance of the aluminum alloy beam body 100.

[0071] Of course, the configuration of the second arc groove 160 is similar to that of the first arc groove 150 , and will not be described in detail in this embodiment.

[0072] It is understandable that the number and size of the first arc groove 150 and the second arc groove 160 can be set according to actual needs as long as they do not adversely affect the performance of the aluminum alloy beam body 100, and this embodiment does not limit them.

[0073] Exemplarily, a first arc groove 150 is arranged on each side of the first mounting seat 110, and the first arc groove 150 extends from one end of the first mounting seat 110 to the other end of the first mounting seat 110. It can be understood that the length of the first arc groove 150 in the Y direction is slightly smaller than the length of the first mounting seat 110 in the Y direction. A second arc groove 160 is also arranged on each side of the second mounting seat 120, and the second arc groove 160 extends from one end of the second mounting seat 120 to the other end of the second mounting seat 120. It can be understood that the length of the second arc groove 160 in the Y direction is slightly smaller than the length of the second mounting seat 120 in the Y direction.

[0074] Specifically, through topological optimization analysis, it was found that the first mounting seat 110 and the second mounting seat 120 are subjected to very little force at the locations where the first arc groove 150 and the second arc groove 160 are set. By setting the first arc groove 150 and the second arc groove 160, not only the weight of the beam can be effectively reduced, but also the first arc groove 150 and the second arc groove 160 are both large arc grooves, which can improve material utilization and facilitate energy transfer.

[0075] Furthermore, the radius of the first arc groove 150 is smaller than the radius of the second arc groove 160, so as to further reduce the weight of the aluminum alloy beam body 100 as much as possible while ensuring the performance of the beam, improve the utilization rate of materials, and reduce the production cost of the aluminum alloy beam body 100.

[0076] Furthermore, a third arc groove 140 is respectively provided at both ends of the first mounting seat 110 and the second mounting seat 120 (the sides extending along the X direction), and the third arc groove 140 is located between the two supporting plates 130. Of course, the third arc groove 140 can be located in the middle of the two supporting plates 130, that is, the distance between the third arc groove 140 and the two supporting plates 130 is equal. It can be understood that the size of the third arc groove 140 should not be too large so as not to affect the connection between the supporting plate 130 and the first mounting seat 110 and the second mounting seat 120.

[0077] The presence of the third arc groove 140 can, on the one hand, reduce the weight of the aluminum alloy beam body 100 and reduce the production cost of the aluminum alloy beam body 100 ; on the other hand, it can effectively transfer energy, evenly distribute the force on the aluminum alloy beam body 100 , and enhance the bending and torsional resistance of the aluminum alloy beam body 100 .

[0078] In some possible embodiments, when the first mounting seat 110 and the aluminum alloy connecting plate 200, and the second mounting seat 120 and the second mounting portion 310 are connected by rivet bolts or ordinary bolts, a plurality of first mounting holes for connecting to the aluminum alloy connecting plate 200 can be provided on the first mounting seat 110, and a plurality of second mounting holes for connecting to the second mounting portion 310 can be provided on the second mounting seat 120, and at least one first mounting hole and a second mounting hole are correspondingly provided on both sides of each support plate 130.

[0079] Taking the first mounting base 110 as an example, Figure 5 As shown, the first mounting seat 110 is divided into three parts, namely a left section, a middle section and a right section, by two supporting plates 130 , and each part is provided with at least one first mounting hole.

[0080] This arrangement allows the first mounting seat 110 to fit tightly with the aluminum alloy connecting plate 200, improving the fit between the two and preventing the first mounting seat 110 from deforming during use. At the same time, the second mounting seat 120 can also fit tightly with the second mounting portion 310, effectively improving the fit and preventing the lower mounting seat from deforming during use.

[0081] In some possible embodiments, one end of the aluminum alloy connecting plate 200 is connected to the side of the first mounting seat 110 away from the second mounting seat 120, and the other end is bent downward to form a first mounting portion 210 for connecting to the longitudinal beam 001, wherein the bend is a 90° bend so as not to affect the strength of the aluminum alloy connecting plate 200. Of course, the bend is still a large arc smooth transition, that is, a large inner angle and small outer angle design to ensure the mechanical properties of the aluminum alloy connecting plate 200.

[0082] In addition, the thickness of the first mounting portion 210 is greater than the thickness of the end where the aluminum alloy connecting plate 200 is connected to the first mounting seat 110. The end where the aluminum alloy connecting plate 200 is connected to the first mounting seat 110 is subjected to less force and has a smaller thickness, while the first mounting portion 210 is subjected to greater force and has a greater thickness. This can reduce the weight of the aluminum alloy connecting plate 200 while meeting the force requirements of the aluminum alloy connecting plate 200.

[0083] In addition, in order to further reduce the weight of the crossbeam assembly, a plurality of weight-reducing holes may be provided on the second mounting portion 310, that is, Figure 6 The first weight-reducing hole 350 in the second mounting portion 310 is subjected to less force. Adding the first weight-reducing hole 350 not only does not affect the use effect of the steel connecting plate 300, but also reduces the weight of the steel connecting plate 300.

[0084] The embodiment of the present application also provides a frame assembly, which includes a longitudinal beam 001 and the cross beam assembly in the above embodiment.

[0085] like Figure 7 As shown, the first mounting portion 210 and the third mounting portion 330 are connected to the upper end and the lower end of the longitudinal beam 001 respectively, and the height of the upper surface of the cross beam assembly in the Z direction is lower than the height of the upper surface of the longitudinal beam 001 in the Z direction, so as to avoid collision between the cross beam assembly and the trailer installed above the longitudinal beam 001. The third connecting plate 320 is arranged at an angle, so that the height of the aluminum alloy cross beam body 100 is reasonably compressed, and the width direction of the third mounting portion 330 is parallel to the Z direction and extends toward the bottom of the steel connecting plate 300, which can avoid collision between the transmission shaft and the aluminum alloy cross beam body 100 and improve the safety of vehicle operation.

[0086] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0087] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A crossbeam assembly, used to connect with the longitudinal beam of a vehicle frame, characterized in that: include: An aluminum alloy crossbeam body, comprising a first mounting seat and a second mounting seat arranged in a vertical relationship, and the first mounting seat and the second mounting seat extend in the same direction; Two aluminum alloy connecting plates, which are arranged oppositely at two ends of the first mounting seat; Two steel connecting plates, which are arranged at two ends of the second mounting seat, the steel connecting plates include a second mounting portion, a third connecting plate and a third mounting portion connected in sequence, the second mounting portion is used to connect with the second mounting seat, and the third connecting plate is arranged obliquely so that the side of the third mounting portion connected to the third connecting plate is located below the second mounting portion; Wherein, the aluminum alloy connecting plate and the third mounting portion are also used for connecting with the longitudinal beam.

2. The crossbeam assembly according to claim 1, characterized in that: The aluminum alloy crossbeam body also includes two support plates integrally formed with the first mounting seat and the second mounting seat. The two support plates are arranged side by side between the first mounting seat and the second mounting seat to connect the first mounting seat and the second mounting seat, and the extension direction of the support plates is the same as that of the first mounting seat.

3. The crossbeam assembly according to claim 2, characterized in that: The aluminum alloy connecting plate and the first mounting seat, as well as the second mounting portion and the second mounting seat are riveted.

4. The crossbeam assembly according to claim 3, characterized in that: The first mounting seat is provided with a plurality of first mounting holes for connecting to the aluminum alloy connecting plate, and the second mounting seat is provided with a plurality of second mounting holes for connecting to the second mounting portion, and at least one first mounting hole and a second mounting hole are correspondingly provided on both sides of each of the support plates.

5. The crossbeam assembly according to claim 2, characterized in that: At least one first arc-shaped groove is disposed on both sides of the first mounting seat in the extending direction, and at least one second arc-shaped groove is disposed on both sides of the second mounting seat in the extending direction.

6. The crossbeam assembly according to claim 5, characterized in that: A third arc groove is respectively arranged at both ends of the first mounting seat and the second mounting seat, and the third arc groove is located between the two supporting plates.

7. The crossbeam assembly according to claim 2, characterized in that: The thickness of the first mounting seat and the second mounting seat are both greater than the thickness of the support plate.

8. The crossbeam assembly according to any one of claims 1 to 7, characterized in that: One end of the aluminum alloy connecting plate is connected to the first mounting seat away from the second mounting seat, and the other end is bent downward to form a first mounting portion for connecting to the longitudinal beam, and the thickness of the first mounting portion is greater than the thickness of the end of the aluminum alloy connecting plate connected to the first mounting seat.

9. The crossbeam assembly according to any one of claims 1 to 7, characterized in that: At least one weight-reducing hole is provided on the second mounting portion.

10. A vehicle frame assembly, characterized in that: It comprises a longitudinal beam and a cross beam assembly as described in any one of claims 1 to 9, wherein the cross beam assembly is connected to the longitudinal beam.

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