A bus chassis cross beam and side wall stamping connecting structure and its assembling method

Abstract

This invention discloses a connection structure and assembly method for a bus chassis crossbeam and side panel stamped parts. The connection structure includes a floor frame assembly, a side panel frame assembly, and a chassis assembly. The floor frame assembly includes a floor crossbeam and a horizontal support frame. The horizontal support frame includes a first connecting part and a second connecting part. The first connecting part is fixedly connected to the bottom of the floor crossbeam. The side panel frame assembly includes a side panel column and an inner plate of the column. One side of the inner plate of the column is fixed to the side panel column, and the other side is fixedly connected to the floor crossbeam. The chassis assembly includes reinforcing diagonal braces, a chassis crossbeam, and chassis columns. The chassis crossbeam is fixedly installed at the bottom of the floor crossbeam, the chassis columns are fixedly installed at the bottom of the chassis crossbeam, and the reinforcing diagonal braces are disposed between the chassis columns and the inner plate of the columns. This invention effectively solves the problem of the original stamped side panel frame being unable to reliably connect with the square tube floor frame and chassis.

Description

Technical Field

[0001] This invention relates to the field of bus component technology, specifically to a connection structure and assembly method for a bus chassis crossbeam and side panel stamped parts. Background Technology

[0002] Currently, conventional buses mostly use stamped parts to stamped parts structures or square tube parts to square tube parts structures for the side panels and underframes. The same component structure can reliably guarantee the body strength after welding. Some buses also use square tube flooring to stamped side panel structures, but due to the unreliability of the structure, the body strength is insufficient and the durability is poor, resulting in body cracking problems that cannot be effectively solved. Summary of the Invention

[0003] The purpose of this invention is to provide a connection structure for the crossbeam and side panel stamping parts of a passenger vehicle chassis and its assembly method.

[0004] The technical problem solved by this invention is:

[0005] Currently, some buses use square tube flooring with stamped side panels, which results in unreliable structure, insufficient body strength, poor durability, and body cracking problems.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A connection structure for a bus chassis crossbeam and side panel stampings includes a floor frame assembly, a side panel frame assembly, and a chassis assembly.

[0008] The floor frame assembly includes floor beams and crossbeam support frames. The crossbeam support frames include a first connecting part and a second connecting part. The first connecting part is fixedly connected to the bottom of the floor beams.

[0009] The side frame assembly includes side columns and column inner panels. One side of the column inner panel is fixed to the side column, and the other side is fixedly connected to the floor beam. A second connecting part is fixedly connected to the column inner panel.

[0010] The base frame assembly includes reinforcing diagonal braces, base frame crossbeams, and base frame uprights. The base frame crossbeams are fixedly installed at the bottom of the floor crossbeams, the base frame uprights are fixedly installed at the bottom of the base frame crossbeams, and the reinforcing diagonal braces are located between the base frame uprights and the inner plates of the uprights.

[0011] As a further aspect of the present invention: the first connecting part and the second connecting part are integrally formed parts.

[0012] As a further aspect of the invention: the side wall of the side column is recessed inward with a mounting groove. The inner plate of the column is welded into the mounting groove, and the inner plate of the column is completely fitted with the groove wall.

[0013] As a further aspect of the present invention: the floor beams, the base frame columns, and the base frame beams are all made of square tubing welded together.

[0014] This invention also discloses an assembly method for a connection structure between a bus chassis crossbeam and side panel stamped parts, comprising the following steps:

[0015] The inner plate of the column is fixed to the side column by welding.

[0016] The base frame crossbeam is fixed to the inner plate of the column by welding, and the first connecting part of the crossbeam support is welded below the base frame crossbeam. The second connecting part of the crossbeam support is welded to the inner plate of the column.

[0017] After the base frame beams and floor beams are positioned, they are welded. Then, the reinforcing diagonal braces are placed between the base frame columns and the inner plates of the columns and welded to fix them in place.

[0018] The beneficial effects of this invention are:

[0019] The connection structure between the bus chassis crossbeam and the side panel stamping parts of this invention, through structural design of the floor frame and chassis, and adaptive adjustments to the existing side panel frame, enables reliable welding of the square tube floor frame and chassis to the stamped side panel frame, forming an important structural part of the vehicle body. This effectively solves the problem of the original stamped side panel frame's inability to reliably connect with the square tube floor frame and chassis, providing a reliable and low-cost development method for the adaptive development of stamped vehicle bodies, and enriching bus product development solutions. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the floor frame component of the present invention.

[0023] Figure 3 This is a schematic diagram of the side frame assembly of the present invention.

[0024] Figure 4 This is a schematic diagram of the base frame assembly of the present invention.

[0025] In the diagram: 1. Floor beam; 2. Beam support; 3. Side column; 4. Inner panel of column; 5. Reinforcing diagonal brace; 6. Base frame beam; 7. Base frame column. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-4 As shown, this invention relates to a connection structure between a bus chassis crossbeam 6 and a side panel stamped component. It addresses the problems of poor manufacturability, poor matching, and insufficient strength in conventional bus chassis with square tube floor panels and stamped side panel frames. This structure, through redesigning the floor frame and chassis, and adapting to the existing side panel frame, achieves reliable welding between the square tube floor frame and chassis and the stamped side panel frame, forming a crucial structural part of the vehicle body. It effectively solves the problem of the original stamped side panel frame's inability to reliably connect with the square tube floor frame and chassis, providing a reliable and low-cost development method for the adaptive development of stamped vehicle bodies, thus enriching bus product development options. The bus chassis crossbeam 6 and side panel stamped component connection structure of this invention includes a floor frame assembly, a side panel frame assembly, and a chassis assembly.

[0028] In this invention, the floor frame assembly includes floor beams 1 and horizontal support frames. The horizontal support frames include a first connecting part and a second connecting part. The side frame assembly includes side columns 3 and column inner plates 4. The base frame assembly includes reinforcing diagonal braces 5, base frame beams 6, and base frame columns 7.

[0029] The first connecting part is fixedly connected to the bottom of the floor beam 1. One side of the inner plate 4 of the column is fixed to the side column 3, and the other side is fixedly connected to the floor beam 1. The second connecting part is fixedly connected to the inner plate 4 of the column. The base frame beam 6 is fixedly installed at the bottom of the floor beam 1, the base frame column 7 is fixedly installed at the bottom of the base frame beam 6, and the reinforcing diagonal brace 5 is set between the base frame column 7 and the inner plate 4 of the column.

[0030] It should be noted that the first connecting part and the second connecting part are integrally molded parts. The first connecting part is welded to the bottom of the floor beam 1, and the second connecting part is welded to the side of the inner plate 4 of the column away from the side column 3. Please refer to... Figure 2 In practice, the first connecting part is usually horizontal and the second connecting part is vertical. Of course, the curvature of the side wall of the second connecting part needs to match the side wall of the inner plate 4 of the column. In general, the horizontal plate support frame can be an inverted L structure.

[0031] In this invention, the side wall of the side column 3 has an inwardly recessed mounting groove. The inner plate 4 of the column is welded into the mounting groove, and the inner plate 4 is completely fitted with the groove wall. After welding, the component is evenly stressed and has good strength.

[0032] The floor crossbeam 1 is made of square tubing, and its length is set according to the inner dimensions of the inner plates 4 of the pillars on both sides, and it is reliably welded to the inner plates 4 of the pillars. The crossbeam support 2 is set below the floor crossbeam 1 and is connected to the floor crossbeam 1 and the inner plates 4 of the pillars respectively, to strengthen the support of the floor crossbeam 1 and improve the body strength.

[0033] The chassis uprights 7 and chassis crossbeams 6 adopt a square tube structure. When the vehicle body is fastened, after aligning with the chassis crossbeams 6 and floor crossbeams 1 in the X direction and welding them firmly and reliably, the reinforcing diagonal braces 5 are placed on the chassis uprights 7 and the inner plate 4 of the side pillars 3 and welded firmly and reliably. The welded reinforcing diagonal braces 5 form a rigid whole between the chassis uprights 7 and the inner plate 4 of the uprights, improving the overall strength of the vehicle.

[0034] The present invention also discloses an assembly method for the connection structure between the bus chassis crossbeam 6 and the side panel stamping parts, the steps of which are as follows:

[0035] Step 1: Fix the inner plate 4 of the column to the side column 3 by welding.

[0036] Step 2: Fix the base frame crossbeam 6 to the inner plate of the column 4 by welding, and weld the first connecting part of the crossbeam support 2 below the base frame crossbeam 6, and weld the second connecting part of the crossbeam support 2 to the inner plate of the column 4.

[0037] Step 3: After positioning the base frame crossbeam 6 and the floor crossbeam 1, weld them together. Then, place the reinforcing diagonal brace 5 between the base frame column 7 and the inner plate 4 of the column and weld it in place. Specifically, after aligning the base frame assembly, including the base frame crossbeam 6, with the floor crossbeam 1 in the X direction during fastening and welding it securely and reliably, place the reinforcing diagonal brace 5 between the base frame column 7 and the inner plate 4 of the side column 3 and weld it securely and reliably.

[0038] The connection structure between the bus chassis crossbeam 6 and the side panel stamping parts of this invention, through structural design of the floor frame and chassis, and adaptive adjustments to the existing side panel frame, enables reliable welding of the square tube floor frame and chassis to the stamped side panel frame, forming an important structural part of the vehicle body. This effectively solves the problem of the original stamped side panel frame's inability to reliably connect with the square tube floor frame and chassis, providing a reliable and low-cost development method for the adaptive development of stamped vehicle bodies, and enriching bus product development solutions.

[0039] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A connection structure for a passenger vehicle chassis crossbeam and side panel stamped parts, characterized in that, include: The floor frame assembly includes a floor beam (1) and a horizontal support frame; the horizontal support frame includes a first connecting part and a second connecting part; the first connecting part is fixedly connected to the bottom of the floor beam (1); A side frame assembly includes side columns (3) and column inner plates (4); one side of the column inner plate (4) is fixed to the side column (3), and the other side is fixedly connected to the floor beam (1); wherein a second connecting part is fixedly connected to the column inner plate (4); and The base frame assembly includes a reinforcing diagonal brace (5), a base frame crossbeam (6), and a base frame column (7); the base frame crossbeam (6) is fixedly installed at the bottom of the floor crossbeam (1), the base frame column (7) is fixedly installed at the bottom of the base frame crossbeam (6), and the reinforcing diagonal brace (5) is arranged between the base frame column (7) and the inner plate (4) of the column; The first connecting part and the second connecting part are integrally formed parts; The side wall of the side column (3) is recessed inward with an installation groove; the inner plate (4) of the column is welded in the installation groove, and the inner plate (4) of the column is completely in contact with the groove wall of the installation groove; The floor beams (1), the base frame columns (7), and the base frame beams (6) are all welded from square tubes.

2. An assembly method for a connection structure between a passenger vehicle chassis crossbeam and side panel stamped parts, characterized in that, The assembly method is used for the connection structure of the bus chassis crossbeam and side panel stamping parts as described in claim 1, and includes the following steps: The inner plate (4) of the column is fixed to the side column (3) by welding; The base frame crossbeam (6) is fixed to the inner plate of the column (4) by welding, and the first connecting part of the crossbeam support (2) is welded below the base frame crossbeam (6), and the second connecting part of the crossbeam support (2) is welded to the inner plate of the column (4). After the base frame crossbeam (6) and floor crossbeam (1) are positioned, they are welded together. Then, the reinforcing diagonal brace (5) is placed between the base frame column (7) and the inner plate of the column (4) and welded to fix it.

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