CN218986762U - Tail beam assembly of commercial vehicle - Google Patents

Abstract

The utility model discloses a tail beam assembly of a commercial vehicle, which belongs to the technical field of tail beams of commercial vehicles and comprises a tail beam body, a tail beam upper connecting frame and a tail beam lower connecting frame, wherein the tail beam body is of a double-web I-steel structure; the tail beam upper connecting frame comprises a first tail beam connecting plate, wherein the outer edge of the first tail beam connecting plate is bent downwards to form a second longitudinal beam connecting plate, and the first longitudinal beam connecting plate is upwards arranged; the tail boom lower connecting frame comprises a second tail boom connecting plate, and a third longitudinal beam connecting plate is bent upwards along the outer edge of the second tail boom connecting plate. The reliable fitting and firm connection with the tail end of the frame longitudinal beam are realized, the structural strength and rigidity of the tail beam assembly are effectively increased, and the tail beam assembly is well balanced in high strength, high rigidity and light weight. The whole structure is simple, the molding and the assembly are easy, the mass production is facilitated, the requirement on space arrangement of the frame is low, the integration level is high, and the frame assembly is flexibly applicable to various commercial vehicle frame assemblies.

Description

Tail beam assembly of commercial vehicle

Technical Field

The utility model belongs to the technical field of tail beams of commercial vehicles, and particularly relates to a tail beam assembly of a commercial vehicle.

Background

The frame generally consists of longitudinal and transverse beams. The side beam type frame mainly comprises two side beams and a middle beam type frame, wherein the side beams type frame consists of two longitudinal beams and a plurality of cross beams which are positioned on two sides, and the longitudinal beams and the cross beams are connected into a firm rigid framework by a riveting method or a welding method. The cross beam is used for ensuring the torsional rigidity of the frame and bearing longitudinal load, and can also support main components on the automobile. The tail beam is used as a cross beam at the rearmost end of the frame assembly, and plays a role in absorbing and relieving alternating load at the side of the frame.

The tail beam assembly of the commercial vehicle is an important component part of the vehicle frame assembly, the rear ends of the left and right longitudinal beams are connected to the two sides of the tail beam, alternating load on the vehicle frame side of the rear end of the vehicle frame is absorbed and alleviated, and the tail beam assembly has stronger strength and rigidity, so that the anti-collision impact capability of the tail part of the vehicle frame can be ensured. Along with the development of the automobile industry, a frame assembly is used as an automobile framework, and is continuously developed and innovated, and the novel tail beam assembly is required to have the properties of high strength, high rigidity and light weight.

In the running process of a commercial vehicle, the tail beam assembly of the commercial vehicle needs to have stronger rigidity and strength to enhance the anti-collision impact capability of the tail part of the vehicle frame, and the tail beam assembly is usually manufactured by adopting a thickened steel plate, so that the weight of the tail beam assembly (the vehicle frame assembly) is increased, and the current requirement for light weight of the vehicle frame is not met. The traditional tail beam assembly has the contradiction that the high strength, the high rigidity and the light weight can not coexist, so that only one of the traditional tail beam assembly can be abandoned, and the perfect compromise of all requirements of the tail beam can not be realized.

Disclosure of Invention

The utility model provides a commercial vehicle tail beam assembly, which aims to solve the problem that the existing commercial vehicle tail beam assembly is heavy and cannot achieve the complete balance of high strength, high rigidity and light weight.

The utility model is realized by the following technical scheme:

a commercial vehicle tail beam assembly comprises a tail beam body, tail beam upper connecting frames connected and installed on the left side and the right side of the upper portion of the tail beam body, and tail beam lower connecting frames connected and installed on the left side and the right side of the lower portion of the tail beam body, wherein the tail beam body is of a double-web I-shaped steel structure; the tail beam upper connecting frame comprises a first tail beam connecting plate, the rear part of the first tail beam connecting plate is connected with a tail beam upper wing plate of the tail beam body, a second longitudinal beam connecting plate is bent downwards at the outer edge of the first tail beam connecting plate, and an upward first longitudinal beam connecting plate is arranged; the tail beam lower connecting frame comprises a second tail beam connecting plate, the rear part of the second tail beam connecting plate is connected with a tail beam lower wing plate of the tail beam body, and a third longitudinal beam connecting plate is bent upwards at the outer edge of the second tail beam connecting plate; corresponding mounting holes are respectively formed in the tail beam upper wing plate, the tail beam lower wing plate, the first tail beam connecting plate and the second tail beam connecting plate of the tail beam body.

Further improvements of the present utility model are that the widths of the first and second tail boom attachment plates smoothly narrow from the rear to the front.

The utility model further improves that the thicknesses of two tail beam webs of the tail beam body are the same, and the thicknesses of the tail beam upper wing plate and the tail beam lower wing plate of the tail beam body are the same; the thickness of the upper wing plate of the tail beam is larger than that of the web plate of the tail beam; the connection part of the tail beam web plate, the tail beam upper wing plate and the tail beam lower wing plate is provided with a chamfer, and the chamfer radius is larger than the thickness of the tail beam web plate.

According to a further improvement of the utility model, the thickness of the second longitudinal beam connecting plate is larger than that of the first tail beam connecting plate and the first longitudinal beam connecting plate, an inner chamfer is arranged at the joint of the first tail beam connecting plate and the second longitudinal beam connecting plate, and the radius of the inner chamfer is larger than that of the first tail beam connecting plate.

According to the utility model, the thickness of the third longitudinal beam connecting plate is larger than that of the second tail beam connecting plate, an inner chamfer and an outer chamfer are arranged at the connecting positions of the third longitudinal beam connecting plate and the second tail beam connecting plate, the radius of the inner chamfer is larger than that of the second tail beam connecting plate, and the radius of the outer chamfer is smaller than that of the second tail beam connecting plate.

The utility model further improves that the first tail beam connecting plate and the second tail beam connecting plate are respectively provided with an upper connecting frame lightening hole and a lower connecting frame lightening hole; the mounting holes on the first tail beam connecting plate are distributed around the weight-reducing holes of the upper connecting frame, and the mounting holes on the second tail beam connecting plate are distributed around the weight-reducing holes of the lower connecting frame.

The utility model further improves that a plurality of tail beam lightening holes are arranged on the tail beam web plate.

The utility model further improves that the tail beam upper wing plate and the tail beam lower wing plate are both wide at two ends and narrow in the middle.

From the technical scheme, the beneficial effects of the utility model are as follows:

through the tail boom body of double-web I-steel structure, take the tail boom lower link of the third longeron connecting plate of upwards buckling and take the second longeron connecting plate of downwards buckling, upwards buckle the last link of tail boom of first longeron connecting plate, the combined installation realizes reliable laminating and firm connection with the frame longeron tail end, effectively increases structural strength and rigidity of tail boom assembly, realizes that the good compromise of tail boom assembly high strength, big rigidity, lightweight. The whole structure is simple, the molding and the assembly are easy, the mass production is facilitated, the requirement on space arrangement of the frame is low, the integration level is high, and the frame assembly is flexibly applicable to various commercial vehicle frame assemblies.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic top view of an embodiment of the present utility model.

Fig. 3 is a schematic front view of a specific embodiment of the present utility model.

Fig. 4 is a schematic front view of a tail boom body according to an embodiment of the present utility model.

Fig. 5 is a schematic side view of a tail boom body according to an embodiment of the present utility model.

Fig. 6 is a schematic top view of a tail boom body according to an embodiment of the present utility model.

Fig. 7 is a schematic top view of a tail boom upper connection frame according to an embodiment of the present utility model.

Fig. 8 is a schematic cross-sectional structure of a connection frame on a tail boom according to an embodiment of the present utility model.

Fig. 9 is a schematic top view of a tail boom lower link according to an embodiment of the present utility model.

Fig. 10 is a schematic cross-sectional structure of a tail boom lower connecting frame according to an embodiment of the present utility model.

In the accompanying drawings: 1. tail boom body, 11, tail boom upper wing plate, 12, tail boom lower wing plate, 13, tail boom web, 2, tail boom upper connecting frame, 21, first tail boom connecting plate, 22, first longitudinal beam connecting plate, 23, second longitudinal beam connecting plate, 24, upper connecting frame lightening hole, 3, tail boom lower connecting frame, 31, second tail boom connecting plate, 32, third longitudinal beam connecting plate, 33, lower connecting frame lightening hole.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 1-10, the utility model discloses a tail beam assembly for a commercial vehicle, which comprises a tail beam body 1, tail beam upper connecting frames 2 connected and installed on the left and right sides of the upper part of the tail beam body 1, and tail beam lower connecting frames 3 connected and installed on the left and right sides of the lower part of the tail beam body 1, wherein the tail beam body 1 is of a double-web I-steel structure; the tail beam upper connecting frame 2 comprises a first tail beam connecting plate 21, the rear part of the first tail beam connecting plate is connected with the tail beam upper wing plate 11 of the tail beam body 1 in a fitting way, a second longitudinal beam connecting plate 23 is bent downwards at the outer edge of the first tail beam connecting plate 21, a first longitudinal beam connecting plate 22 bent upwards is arranged, and the first longitudinal beam connecting plate 22 and the second longitudinal beam connecting plate 23 can be connected with a frame longitudinal beam in a fitting way; the tail beam lower connecting frame 3 comprises a second tail beam connecting plate 31, the rear part of which is connected with the tail beam lower wing plate 12 of the tail beam body 1 in a bonding way, and a third longitudinal beam connecting plate 32 which can be connected with a frame longitudinal beam in a bonding way is arranged at the outer edge of the second tail beam connecting plate 31 in an upward bending way; corresponding mounting holes are respectively formed in the tail beam upper wing plate 11, the tail beam lower wing plate 12, the first tail beam connecting plate 21 and the second tail beam connecting plate 31 of the tail beam body 1, bolts penetrate through the corresponding mounting holes, and gaskets and nuts are screwed for connection and installation, so that convenience in assembly and disassembly of all parts is realized.

This commercial car tail boom assembly, through the tail boom body 1 of double-web I-steel structure, take the tail boom lower link 3 of the third longeron connecting plate 32 of upwards buckling and take the second longeron connecting plate 23 of buckling downwards, upwards buckle the last link 2 of tail boom of first longeron connecting plate 22, the combination installation realizes with the reliable laminating and the firm connection of frame longeron tail end, effectively increases the structural strength and the rigidity of tail boom assembly, realizes the good compromise of tail boom assembly high strength, big rigidity, lightweight. The edge of the tail beam lower connecting frame 3 only adopts an upward bending structural form, and a realization space is reserved for the upward warping structural form of the rear end of the frame. The whole structure is simple, the molding and the assembly are easy, the mass production is facilitated, the requirement on space arrangement of the frame is low, the integration level is high, and the frame assembly is flexibly applicable to various commercial vehicle frame assemblies.

The third longitudinal beam connecting plate 32, the first longitudinal beam connecting plate 22 and the second longitudinal beam connecting plate 23 are provided with a plurality of mounting holes which can be connected and mounted with the frame longitudinal beam along the length direction (front-rear direction), bolts penetrate through the frame longitudinal beam and are connected and mounted with the mounting holes on the third longitudinal beam connecting plate 32, the first longitudinal beam connecting plate 22 and the second longitudinal beam connecting plate 23, so that the third longitudinal beam connecting plate 32, the first longitudinal beam connecting plate 22 and the second longitudinal beam connecting plate 23 are respectively attached to the inner side surface of the frame longitudinal beam, firm connection of a tail beam assembly and the frame longitudinal beam can be effectively realized, convenience in disassembly and assembly of the tail beam assembly and the frame longitudinal beam can be realized, and flexibility in use is ensured.

Wherein the first and second tail beam connection plates 21 and 31 are plate-shaped structures, and the widths of the first and second tail beam connection plates 21 and 31 smoothly narrow from the rear to the front. That is, the inner rear ends of the first and second tail beam connecting plates 21 and 31 are protruded inwards (that is, the rear edges of the first and second tail beam connecting plates 21 and 31 are approximately flush with the rear edges of the tail beam upper wing plates 11 and the tail beam lower wing plates 12), and the protruded parts are provided with mounting holes for being mounted in a fitting connection with the tail beam body 1 (the tail beam upper wing plates 11 and the tail beam lower wing plates 12), so that the connection firmness of the first and second tail beam connecting plates 21 and 31 and the tail beam body 1 is ensured, and the rear parts are smoothly narrowed to the front ends, so that the weight reduction design is realized as much as possible while the structural strength is ensured.

As shown in fig. 5, the thickness of the two tail beam webs 13 of the tail beam body 1 is the same, and the thickness of the tail beam upper wing plate 11 and the tail beam lower wing plate 12 of the tail beam body 1 is the same; the thickness of the upper wing plate 11 of the tail beam is larger than that of the web plate 13 of the tail beam; the joints of the tail beam web 13, the tail beam upper wing plate 11 and the tail beam lower wing plate 12 are respectively provided with a chamfer, and the chamfer radius is larger than the thickness of the tail beam web 13. The thickness of the wing plate of the tail beam body 1 is larger than that of the web plate, the design is only that the wing plate of the main bearing surface is thickened, and the design of large chamfer angles is adopted, so that the energy transferred by the two wing plates can be effectively and stably conducted, the design principle of equal strength is realized, and the comprehensive service life is prolonged.

As shown in fig. 8, the thickness of the second longitudinal beam connecting plate 23 is larger than that of the first tail beam connecting plate 21 and that of the first longitudinal beam connecting plate 22, and an inner chamfer is arranged at the joint of the first tail beam connecting plate 21 and the second longitudinal beam connecting plate 23, and the radius of the inner chamfer is larger than that of the first tail beam connecting plate 21. Namely, the thickness of the first tail beam connecting plate 21 is the same as that of the first longitudinal beam connecting plate 22, only the second longitudinal beam connecting plate 23 of the main bearing surface is designed in a thickening way, the inner chamfer at the joint of the first tail beam connecting plate 21 and the second longitudinal beam connecting plate 23 adopts a large chamfer design, and the design is realized by reducing the design as much as possible while effective conduction and sharing of the energy transferred by the frame longitudinal beam are ensured, so that the design principle of equal strength is realized, and the comprehensive service life is prolonged.

The tail beam upper connecting frame 2 adopts a process of combining sheet metal bending and extrusion processing, so that designs with different thicknesses and large chamfer angles on the inner side are realized, the tail beam upper connecting frame 2 is an integral body, a split connection mode is not adopted, and the structural performance of the tail beam upper connecting frame is ensured; the joint arrangement of the first longitudinal beam connecting plate 22 and the second longitudinal beam connecting plate 23 can effectively enlarge the joint area with the frame longitudinal beam and improve the connection firmness with the frame longitudinal beam; the upper connecting frame 2 of the tail beam is formed by extrusion of aluminum materials, then reduced in materials and drilled by machining equipment, and bent and formed by a sheet metal tool.

As shown in fig. 10, the thickness of the third longitudinal beam connecting plate 32 is greater than that of the second tail beam connecting plate 31, the connecting positions of the third longitudinal beam connecting plate and the second tail beam connecting plate are provided with inner and outer chamfers, the radius of the inner chamfer is greater than that of the second tail beam connecting plate 31, and the radius of the outer chamfer is smaller than that of the second tail beam connecting plate 31. The design is only that the third longitudinal beam connecting plate 32 of the main bearing surface is thickened, and the design of large inner chamfer and small outer chamfer is adopted, so that the design of reducing weight is realized as much as possible while effective conduction and sharing of the energy transferred by the frame longitudinal beam are ensured, the design principle of equal strength is realized, and the comprehensive service life is prolonged.

The tail beam lower connecting frame 3 adopts a process of combining sheet metal bending and extrusion processing, so that designs with different thicknesses and designs with large inner chamfer angles and small outer chamfer angles are realized, the tail beam lower connecting frame 3 is an integral body, a split connection mode is not adopted, and the structural performance of the tail beam lower connecting frame is ensured; the tail boom lower connecting frame 3 is formed by extrusion of aluminum materials, then reduced in material and drilled by machining equipment, and bent and formed by a sheet metal tool.

As shown in fig. 7 and 9, the first tail boom connecting plate 21 and the second tail boom connecting plate 31 are respectively provided with an upper connecting frame lightening hole 24 and a lower connecting frame lightening hole 33; the mounting holes on the first tail boom connecting plate 21 are distributed around the upper connecting frame lightening holes 24, and the mounting holes on the second tail boom connecting plate 31 are distributed around the lower connecting frame lightening holes 33. The light design is realized, and the overall structural performance is not influenced.

As shown in fig. 4, the tail boom web 13 is provided with a plurality of tail boom lightening holes. The bearing force of the tail beam web 13 is smaller than that of the wing plate, and the tail beam lightening holes are formed in the tail beam web, so that the light weight design of the tail beam assembly is effectively realized.

As shown in fig. 6, the tail boom upper wing plate 11 and the tail boom lower wing plate 12 each have a shape with both wide ends and a narrow middle. The wider end part is connected and installed with the upper tail beam connecting frame 2 and the lower tail beam connecting frame 3 in a fitting way, so that the connection firmness is realized, and the light-weight design is realized in the narrower middle part.

This commercial car tail boom assembly, through the tail boom body 1 of double-web I-steel structure, take the tail boom lower link 3 of the third longeron connecting plate 32 of upwards buckling and take the second longeron connecting plate 23 of buckling downwards, upwards buckle the last link 2 of tail boom of first longeron connecting plate 22, the combination installation realizes with the reliable laminating and the firm connection of frame longeron tail end, effectively increases the structural strength and the rigidity of tail boom assembly, realizes the good compromise of tail boom assembly high strength, big rigidity, lightweight. The whole structure is simple, the molding and the assembly are easy, the mass production is facilitated, the requirement on space arrangement of the frame is low, the integration level is high, and the frame assembly is flexibly applicable to various commercial vehicle frame assemblies.

In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.

The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present utility model and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides a commercial car tail beam assembly, includes tail beam body (1), connect and install tail beam upper junction frame (2) and connect and install tail beam lower junction frame (3) in the left and right sides of tail beam body (1) lower part left and right sides of tail beam body (1) upper portion, characterized in that, tail beam body (1) is double web I-steel structure; the tail beam upper connecting frame (2) comprises a first tail beam connecting plate (21) with the rear part connected with a tail beam upper wing plate (11) of the tail beam body (1), wherein the outer edge of the first tail beam connecting plate (21) is downwards bent to be provided with a second longitudinal beam connecting plate (23) and an upward first longitudinal beam connecting plate (22); the tail beam lower connecting frame (3) comprises a second tail beam connecting plate (31) with the rear part connected with a tail beam lower wing plate (12) of the tail beam body (1), and a third longitudinal beam connecting plate (32) is bent upwards along the outer edge of the second tail beam connecting plate (31); corresponding mounting holes are respectively formed in a tail beam upper wing plate (11), a tail beam lower wing plate (12), a first tail beam connecting plate (21) and a second tail beam connecting plate (31) of the tail beam body (1).

2. The commercial vehicle tail boom assembly of claim 1, wherein the widths of the first tail boom web (21) and the second tail boom web (31) smoothly narrow from the rear to the front.

3. The commercial vehicle tail boom assembly according to claim 1, characterized in that the two tail boom webs (13) of the tail boom body (1) are identical in thickness, and the tail boom upper wing plate (11) and the tail boom lower wing plate (12) of the tail boom body (1) are identical in thickness; the thickness of the upper wing plate (11) of the tail beam is larger than that of the web plate (13) of the tail beam; the connection part of the tail beam web plate (13) and the tail beam upper wing plate (11) and the tail beam lower wing plate (12) is provided with a chamfer, and the chamfer radius is larger than the thickness of the tail beam web plate (13).

4. The commercial vehicle tail boom assembly of claim 1, wherein the second rail web (23) has a thickness greater than the first rail web (21) and the first rail web (22), and wherein an inner chamfer is provided at the junction of the first rail web (21) and the second rail web (23), the inner chamfer having a radius greater than the thickness of the first rail web (21).

5. The commercial vehicle tail boom assembly of claim 1, wherein the third stringer web (32) has a thickness greater than the second tail boom web (31), and the connection location is provided with an inner and outer chamfer having a radius greater than the second tail boom web (31) and an outer chamfer having a radius less than the second tail boom web (31).

6. The commercial vehicle tail boom assembly of claim 1, wherein the first tail boom connecting plate (21) and the second tail boom connecting plate (31) are provided with an upper connecting frame lightening hole (24) and a lower connecting frame lightening hole (33), respectively; the mounting holes on the first tail beam connecting plate (21) are distributed around the upper connecting frame lightening holes (24), and the mounting holes on the second tail beam connecting plate (31) are distributed around the lower connecting frame lightening holes (33).

7. The commercial vehicle tail boom assembly of claim 1, wherein the tail boom web (13) is provided with a plurality of tail boom lightening holes.

8. The commercial vehicle tail boom assembly according to claim 1, wherein the tail boom upper wing plate (11) and the tail boom lower wing plate (12) are each wide at both ends and narrow in the middle.

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