Rear suspension thrust rod fixing seat mounting structure based on 10.5 m full-load city bus

Abstract

The utility model discloses a rear suspension thrust rod fixing seat mounting structure based on a 10.5 m full-load city bus, which comprises a Z-shaped base and a frame structure, the frame structure comprises an upper cross beam and a bottom cross beam which are arranged in parallel, the length of the bottom cross beam is smaller than that of the upper cross beam, and the two ends of the bottom cross beam and the upper cross beam are fixedly connected through inclined struts. Side stand columns are welded to the joints of the two inclined struts and the bottom cross beam, and the top ends of the side stand columns are welded to the upper cross beam. The back face of a side plate of the Z-shaped base and the upper end face of a bottom plate are welded to a frame structure, and the two thrust rod fixing bases are welded to the two ends of the front face of the side plate of the Z-shaped base respectively. According to the utility model, the consistency of centered positioning required by the design is improved and well controlled in the manufacturing process, the manufacturing difficulty is greatly reduced, the manufacturing and purchasing cost of the whole vehicle is reduced, and the aim of lightweight design of the whole vehicle is fulfilled.

Description

Technical Field

[0001] The utility model belongs to the technical field of bus manufacturing, and particularly relates to an installation structure of a rear suspension thrust rod fixing seat based on a 10.5-meter fully loaded city bus. Background Art

[0002] The existing rear suspension thrust rod fixing seat structure assembly is as Figure 1 shown. The front-back direction of the frame structure (partial) adopts a double-layer structure. Two thrust rod fixing seats are respectively welded on the frame structure. Reinforcing members are welded between the upper part and both sides of each thrust rod fixing seat and the frame structure. The thrust rod is installed on the thrust rod fixing member by bolts.

[0003] In this assembly structure, due to structural limitations, the frame structure is locally divided into a front-back disconnected double-layer structure, and the continuity of the overall structure after force application is poor. In addition, the selection of the rectangular tube (specification: width 60mm * height: 120mm, thickness 8mm) used to connect and fix the reinforcing member and the thrust rod fixing seat at the rear is too heavy, which does not meet the design requirements of vehicle lightweight. Moreover, due to the overly complex and heavy structure, although the reinforcing members on both sides are the same, it is difficult to control the consistency of the center positioning required by the design during the manufacturing process, and there are too many repeatedly designed parts, which greatly increases the manufacturing difficulty and also raises the production, manufacturing and procurement costs of the whole vehicle. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides an installation structure of a rear suspension thrust rod fixing seat based on a 10.5-meter fully loaded city bus.

[0005] The technical solution adopted by the utility model is that for the installation structure of the rear suspension thrust rod fixing seat based on a 10.5-meter fully loaded city bus, it includes a Z-shaped base and a frame structure. The frame structure includes an upper cross beam and a bottom cross beam arranged in parallel. The length of the bottom cross beam is less than that of the upper cross beam, and both ends of the two are fixedly connected by diagonal braces. Side columns are welded at the connection positions of the two diagonal braces and the bottom cross beam, and the top ends of the side columns are welded to the upper cross beam. The back surface of the side plate and the upper end surface of the bottom plate of the Z-shaped base are welded to the frame structure, and two thrust rod fixing seats are respectively welded at both ends of the front surface of the Z-shaped base side plate.

[0006] Preferably, a plurality of middle columns are welded between the two side columns.

[0007] Preferably, side reinforcing plates are welded on both sides of the two thrust rod fixing seats, and the top surfaces of the side reinforcing plates are welded to the top plate of the Z-shaped base.

[0008] Preferably, a middle reinforcing plate is welded in the middle of the Z-shaped base.

[0009] Preferably, a plurality of plug weld holes are provided on the bottom plate of the Z-shaped base.

[0010] Compared with the prior art, the beneficial effects of the present utility model are that the design structure is simple and light. During the manufacturing process, the consistency of the centering positioning for design requirements is well controlled, greatly reducing the manufacturing difficulty. At the same time, it also reduces the production and procurement costs of the whole vehicle, achieving the goal of lightweight design of the whole vehicle. The frame section structure of the frame part in this structural assembly is a self-integrated closed-loop single-layer structure, effectively ensuring the structural strength of the assembly. There are also 9 plug weld holes designed at the bottom of the Z-shaped base, better ensuring the reliability after welding of the rear suspension thrust rod fixing seat and the frame section structure. Brief Description of the Drawings

[0011] Figure 1 is the existing structural assembly of the rear suspension thrust rod fixing seat;

[0012] Figure 2 is the structural assembly of the rear suspension thrust rod fixing seat of the present utility model;

[0013] Figure 3 is the schematic diagram of the Z-shaped base structure;

[0014] Figure 4 is the connection schematic diagram of the thrust rod fixing seat and the Z-shaped base;

[0015] Figure 5 is the schematic diagram of the frame structure (partial). Detailed Embodiment

[0016] The following will further explain and illustrate the present utility model in conjunction with the drawings of the specification, so as to be better understood by those skilled in the art.

[0017] Embodiment 1

[0018] As Figure 2-5 shown, based on the installation structure of the rear suspension thrust rod fixing seat of a 10.5-meter fully loaded city bus, it includes a Z-shaped base 1 and a frame structure 2.

[0019] The frame structure 2 includes an upper cross beam 3 and a bottom cross beam 4 arranged in parallel. The length of the bottom cross beam 4 is less than that of the upper cross beam 3, and both ends of them are fixedly connected by diagonal braces 5. Side columns 6 are welded at the joints of the two diagonal braces 5 and the bottom cross beam 4, and the tops of the side columns 6 are welded to the upper cross beam 3. In order to enhance the structural strength of the frame structure 2, 4 middle columns 7 are symmetrically welded between the two side columns. The frame part is a self-integrated closed-loop single-layer structure, effectively ensuring the structural strength of the assembly.

[0020] The back side of the side plate of the Z-shaped base 1 and the upper end surface of the bottom plate are welded to the frame structure 2, and the two thrust rod fixing seats 8 are respectively welded to both ends of the front side of the side plate of the Z-shaped base 1. Side strengthening plates 9 are welded on both sides of the two thrust rod fixing seats 8, and the top surface of the side strengthening plates 9 is welded to the top plate of the Z-shaped base 1, which is beneficial to enhancing the installation stability of the thrust rod fixing seats 8. In addition, a middle strengthening plate 10 is welded in the middle of the Z-shaped base 1 to further enhance the strength of the Z-shaped base 1.

[0021] Furthermore, 9 plug weld holes 11 are provided on the bottom plate of the above-mentioned Z-shaped base 1, which better ensures the reliability after welding of the rear suspension thrust rod fixing seat and the frame section structure.

[0022] The Z-shaped base 1 is made of a steel plate with a thickness of 8 mm and a material of Q355. The upper cross beam 3 of the frame structure 2 is made of a rectangular tube with a size of 50 mm * 40 mm and a thickness of 3 mm. The bottom cross beam 4 is made of a rectangular tube with a size of 50 mm * 40 mm and a thickness of 3 mm. The 4 middle columns 7 are made of rectangular tubes with a size of 50 mm * 40 mm and a thickness of 3 mm. The two side columns 6 are made of rectangular tubes with a size of 50 mm * 40 mm and a thickness of 3 mm. The 2 diagonal braces 5 are made of rectangular tubes with a size of 50 mm * 40 mm and a thickness of 3 mm. The above 5 kinds of components are welded into a small assembly component according to the design dimensions and relevant requirements by CO2 gas shielded welding.

[0023] By directly welding the Z-shaped base 1 to the frame structure 2, the consistency of the centering positioning required by the design is well controlled during the manufacturing process, greatly reducing the difficulty in production and manufacturing, and at the same time reducing the production, manufacturing and procurement costs of the whole vehicle, achieving the goal of lightweight design of the whole vehicle.

[0024] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit and principles of the present invention, various deformations and improvements made by those skilled in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. The installation structure of the thrust rod fixing seat of the rear suspension of a 10.5-meter fully loaded city bus is characterized in that It includes a Z-shaped base (1) and a frame structure (2). The frame structure (2) includes an upper cross beam (3) and a bottom cross beam (4) arranged in parallel. The length of the bottom cross beam (4) is less than that of the upper cross beam (3), and both ends of them are fixedly connected by diagonal braces (5). Side columns (6) are welded at the joints of the two diagonal braces (5) and the bottom cross beam (4), and the top ends of the side columns (6) are welded to the upper cross beam (3); the back of the side plate and the upper end face of the bottom plate of the Z-shaped base (1) are welded to the frame structure (2), and two thrust rod fixing seats (8) are respectively welded at both ends of the front side of the side plate of the Z-shaped base (1).

2. The installation structure of the rear suspension thrust rod fixing seat based on a 10.5-meter fully loaded city bus according to claim 1, wherein, A plurality of middle columns (7) are welded between the two side columns (6).

3. The installation structure of the rear suspension thrust rod fixing seat based on a 10.5-meter full-load urban bus according to claim 1, characterized in that Side strengthening plates (9) are welded on both sides of the two thrust rod fixing seats (8), and the top end faces of the side strengthening plates (9) are welded to the top plate of the Z-shaped base (1).

4. The mounting structure of the rear suspension thrust rod fixing seat based on a 10.5-meter fully loaded city bus according to claim 1, wherein, A middle strengthening plate (10) is welded in the middle of the Z-shaped base (1).

5. The installation structure of the rear suspension thrust rod fixing seat based on a 10.5-meter full-load urban bus according to claim 1, wherein, A plurality of plug welding holes (11) are provided on the bottom plate of the Z-shaped base (1).

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