Frame structure

Abstract

The utility model relates to the field of truck frames, and discloses a frame structure which comprises a plurality of cross beams and two longitudinal beam parts connected through the cross beams, each longitudinal beam part comprises a middle supporting beam and a tail supporting beam, the middle supporting beams and the tail supporting beams are connected in a welded mode, bosses are punched on the upper surfaces of the middle supporting beams and the upper surfaces of the tail supporting beams, and the middle supporting beams and the tail supporting beams are connected in a welded mode. The adjacent parts of the two bosses are connected through bolts; and the lengthened beam can be connected with the tail strut beam. The vehicle frame structure is adjustable in length and high in bearing strength.

Description

Technical Field

[0001] The utility model relates to the field of truck frames, in particular to a frame structure. Background Art

[0002] The usage scenarios of commercial vehicles are ever-changing, and customers have an increasingly higher demand for customized commercial vehicle cargo boxes, resulting in a wide variety of commercial vehicle cargo box lengths and widths. According to actual usage, customers tend to choose the longer T3 model cargo box, so the frame length needs to be set longer. To meet performance requirements, the suspended length of the cargo box and the frame must be within a certain range, resulting in inconsistent frame lengths and a wide variety of types, which is disadvantageous to design and production. In order to reduce design and production investment, configuring a long cargo box will cause the frame length to be longer, and some paint shop production lines cannot meet the requirements of long frames. Therefore, an adjustable frame longitudinal beam structure came into being. The adjustable frame length in the prior art often has various problems, resulting in weak overall frame structural strength, such as weak connection strength between longitudinal beams and problems with alignment of adjustable longitudinal beam mounting holes, resulting in assembly difficulties. Therefore, it is necessary to provide a frame structure with adjustable length and strong load-bearing strength. Utility Model Content

[0003] The utility model aims to provide a frame structure, so as to provide a frame structure with adjustable length and strong bearing strength.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a frame structure, including multiple cross beams and two longitudinal beam parts connected by the cross beams, the longitudinal beam parts each include a middle support beam and a tail support beam, the middle support beam and the tail support beam are connected by welding, the upper surfaces of the middle support beam and the tail support beam are stamped with bosses, the two bosses are connected at adjacent positions by bolts, and also include an extension beam that can be connected to the tail support beam.

[0005] The beneficial effects of this program are:

[0006] The connection between the middle support beam and the rear support beam adopts welding technology, and a boss structure is formed on the upper surface by stamping. The boss not only enhances the overall rigidity of the support beam, but also improves the strength of the connection between the two beams, avoiding damage to the connection and bending and breaking during weighing. When a long cargo box is required, the adjustable longitudinal beam section is assembled on the rear support beam by bolt connection to meet the support requirements of the long cargo box. The setting of the stamped boss further enhances the bearing capacity of the longitudinal beam part, especially in heavy-load transportation scenarios, which can effectively reduce deformation and improve the stability of the frame load. This structure rationally utilizes the advantages of welding and bolting, simplifies the manufacturing and assembly process while ensuring strength, is suitable for mass production, reduces production and maintenance costs, and has the characteristics of easy processing, convenient installation, and reliable use.

[0007] Preferably, as an improvement, the extended beam includes a bottom beam and a top plate that are fixedly connected by welding. The upper surface of the top plate is also stamped with a boss, and the end of the tail beam is stamped with a connection groove. The connection groove and the boss of the extended beam are strengthened and connected by bolts.

[0008] The beneficial effects are as follows: The force on the extended section of the frame mainly bears the vertical downward force of the weight of the cargo box. The end of the extended beam is subject to a downward bending moment. The connection groove and the boss of the extended beam can be strengthened and connected by bolts. Through CAE force analysis and road test verification, it can effectively improve the bearing capacity of the extended beam and increase the stability of the connection. The connection groove is strengthened and connected by bolts, which can greatly improve the firmness of the connection between the two and reduce the loosening or displacement of the connection points.

[0009] Preferably, as an improvement, the two tail beams are connected by three cross beams, and the cross beams are tubular beams.

[0010] The beneficial effects are as follows: Since the extended beam is installed on the tail beam, the tail beam needs to share part of the weight of the extended beam. Therefore, it is necessary to further ensure the structural stability of the tail beam. At the same time, the tubular beam has good bending and torsional resistance performance. Compared with traditional solid beams or section steel beams, it can provide higher stiffness and strength under the condition of lighter weight.

[0011] Preferably, as an improvement, the end of the bottom beam is sleeved on the end of the tail beam and is threadedly connected to the tail beam by five bolts, four of which are located at the upper surface connection and one is located at the lower surface connection. The top plate is connected to the tail beam by one bolt.

[0012] The beneficial effects are as follows: The four bolts on the upper surface provide the main connection function and can effectively help disperse the loads in the longitudinal and vertical directions. As long as the connection does not bend or break, the stability of the connection can be ensured; the one bolt on the lower surface can not only provide additional support to prevent deformation and displacement at the lower part, but also help maintain the stability of the overall structure when under pressure.

[0013] Preferably, as an improvement, the middle beam is bent, and a reinforcing block is welded and fixed at the bent part.

[0014] The beneficial effects are as follows: The bent part is often the area where stress concentration occurs. By welding the reinforcing block, it can effectively resist external loads, reduce the risk of fatigue damage and deformation at the bent part, provide additional support force for the bent part, and enable the middle beam to maintain good rigidity and stability under heavy loads.

[0015] Preferably, as an improvement, reinforcing ribs are welded to the bottom of the top plate.

[0016] The beneficial effects are as follows: Improve the structural strength and bearing capacity of the extended beam. Description of the Drawings

[0017] Figure 1 Schematic diagram of the structure of the embodiment of the present utility model;

[0018] Figure 2 Exploded view of the extension beam of the embodiment of the present utility model. Specific embodiments

[0019] The following is a more detailed description through specific embodiments:

[0020] The reference numerals in the accompanying drawings of the specification include: cross beam 1, middle support beam 2, tail support beam 3, convex platform 4, extension beam 5, bottom beam 6, top plate 7, connection groove 8, reinforcing rib 9, reinforcing block 10, connection seat 11, clamping seat 12.

[0021] Embodiment

[0022] The embodiment is basically as Figure 1 - Figure 2 shown, such as Figure 1 and Figure 2 shown, a vehicle frame structure includes a plurality of cross beams 1 and two longitudinal beam parts connected by the cross beams 1. Each longitudinal beam part includes a middle support beam 2 and a tail support beam 3. The middle support beam 2 and the tail support beam 3 are connected by welding and bolts. A plurality of convex platforms 4 are stamped on the upper surfaces of the middle support beam 2 and the tail support beam 3. The convex platforms 4 at the ends of the middle support beam 2 and the tail support beam 3 are connected by bolts. It further includes an extension beam 5 that can be connected to the tail support beam 3. The middle support beams 2 are connected by two cross beams 1. Connection seats 11 are welded and fixed on some cross beams 1 for easy installation on the vehicle. A clamping seat 12 fixedly connected to the vehicle chassis is also welded and fixed on the ground of the middle support beam 2 to ensure the stability of the installation of the vehicle frame structure and facilitate alignment installation to ensure the accuracy of the installation position.

[0023] Such as Figure 2As shown, the extended beam 5 includes a bottom beam 6 and a top plate 7 that are fixedly connected by welding. A reinforcing rib 9 is welded to the bottom of the top plate 7 to enhance the structural strength and load-bearing capacity of the extended beam 5. A boss 4 is also stamped on the upper surface of the top plate 7, and a connecting groove 8 is stamped at the end of the tail support beam 3. The connecting groove 8 and the boss 4 of the extended beam 5 are strongly connected by bolts. The force on the extended section of the frame mainly bears the vertically downward force of the cargo box weight. The end of the extended beam 5 is subjected to a downward bending moment. The connecting groove 8 and the boss 4 of the extended beam 5 can be strongly connected by bolts. Through CAE force analysis and road test verification, it can effectively improve the load-bearing capacity of the extended beam 5 and increase the stability of the connection. The connecting groove 8 is strongly connected by bolts, which can greatly improve the firmness of the connection between the two and reduce the loosening or displacement of the connection points. The end of the bottom beam 6 is sleeved on the end of the tail support beam 3 and bolted to the tail support beam 3 by five bolts, four of which are located at the upper surface connection and one is located at the lower surface connection. The top plate 7 is connected to the tail support beam 3 by one bolt. The four bolts on the upper surface provide the main connection function and can effectively help disperse the loads in the longitudinal and vertical directions. As long as the connection does not bend or break, the stability of the connection can be ensured; the one bolt on the lower surface can not only provide additional support to prevent deformation and displacement at the lower part, but also help maintain the stability of the overall structure when compressed.

[0024] The two tail support beams 3 are connected by three cross beams 1. Since the extended beam 5 is installed on the tail support beam 3 and the tail support beam 3 needs to share part of the weight of the extended beam 5, it is necessary to further ensure the structural stability of the tail support beam 3. At the same time, the tubular beam has good bending and torsional resistance performance. Compared with the traditional solid beam or section steel beam, it can provide higher stiffness and strength with a lighter weight. The cross beam 1 is a tubular beam, and the middle support beam 2 is bent, and a reinforcing block 10 is welded and fixed at the bending part. The bending part is often the area where stress is concentrated. Through the welding of the reinforcing block 10, it can effectively resist external loads, reduce the fatigue damage and deformation risk of the bending part, provide additional support force for the bending part, and enable the middle support beam 2 to maintain good rigidity and stability under heavy loads.

[0025] The specific implementation process is as follows:

[0026] The connection between the middle support beam 2 and the tail support beam 3 is fixed by welding and bolts to ensure the stability of the connection. A boss 4 structure is formed by stamping on the upper surface. The boss 4 not only enhances the overall rigidity of the support beam but also improves the connection strength between the two support beams, avoiding damage at the connection and bending and breaking during weighing. When a long cargo box configuration is required, the adjustable longitudinal beam section is assembled on the tail support beam 3 by bolt connection to meet the support requirements of the long cargo box. The setting of the stamping boss 4 further enhances the load-bearing capacity of the longitudinal beam part. Especially in the scenario of heavy-load transportation, it can effectively reduce deformation and improve the stability of the vehicle frame load-bearing. This structure reasonably utilizes the advantages of welding and bolt connection, simplifies the manufacturing and assembly process on the premise of ensuring strength, is suitable for mass production, reduces production and maintenance costs, and has the characteristics of easy processing, convenient installation, and reliable use.

[0027] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A frame structure, characterized in that: It includes multiple cross beams and two longitudinal beam parts connected by the cross beams. The longitudinal beam parts include a middle support beam and a tail support beam. The middle support beam and the tail support beam are connected by welding. Bosses are stamped on the upper surfaces of the middle support beam and the tail support beam. The two bosses are connected by bolts at adjacent positions. It also includes an extended beam that can be connected to the tail support beam.

2. A frame structure according to claim 1, characterized in that: The extended beam includes a bottom beam and a top plate which are connected and fixed by welding. A boss is also stamped on the upper surface of the top plate, and a connecting groove is stamped on the end of the tail support beam. The connecting groove and the boss of the extended beam are reinforced and connected by bolts.

3. A frame structure according to claim 2, characterized in that: The two rear support beams are connected by three cross beams, which are tubular beams.

4. A vehicle frame structure according to claim 3, characterized in that: The end of the bottom beam is sleeved on the end of the tail support beam and is threadedly connected to the tail support beam through five bolts, four of which are located at the upper surface connection and one is located at the lower surface connection. The top plate is connected to the tail support beam through one bolt.

5. A vehicle frame structure according to claim 4, characterized in that: The middle supporting beam is in a bent shape, and a reinforcing block is welded and fixed at the bent position.

6. A vehicle frame structure according to claim 5, characterized in that: Reinforcing ribs are welded to the bottom of the top plate.

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