Front transverse thrust rod fixing seat based on 8.6 m full-load-bearing urban bus

Abstract

The utility model discloses a front transverse thrust rod fixing seat based on a 8.6 m full-load-bearing urban bus, which comprises a front section frame assembly outer frame, a front section frame assembly inner frame is mounted in the front section frame assembly outer frame, and fixing seat bodies are mounted above two ends of the front section frame assembly inner frame; the front section frame assembly inner frame comprises two sets of supports which are oppositely arranged, each set of supports comprises two cross beams which are arranged in parallel up and down, stand columns are fixedly connected to the positions, close to the two ends, between the two cross beams, and arc pieces are arranged at the joints of the outer sides of the ends of the two cross beams and the front section frame assembly outer frame. And the front-section frame assembly inner frame is welded with the front-section frame assembly outer frame through the cross beam and the arc piece. According to the transverse thrust rod assembly, it can be guaranteed that force transmitted to a frame after the current transverse thrust rod assembly is stressed can be effectively dispersed, the structural strength is effectively guaranteed, and the problem that an existing fixing base rectangular pipe is prone to cracking is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bus accessories, and particularly relates to a front transverse thrust rod fixing seat for an 8.6-meter fully loaded city bus. Background Art

[0002] As a type of vehicle vigorously promoted by the country, pure electric city buses are also the main means of transportation in each city. The relevant national and local standards have specific and detailed parameter requirements for their step height, interior floor height, aisle width, passenger seat number, etc. The realization of these specific requirements is mainly closely related to the layout design structure of the front suspension of pure electric city buses. As city buses, in addition to meeting the specific and detailed parameter requirements of relevant national and local standards for their step height, interior floor height, aisle width, passenger seat number, etc., it is particularly important to reasonably arrange the positions of airbags, airbag supports, shock absorbers, guiding mechanisms and related bracket structures to increase the riding comfort of pure electric city buses.

[0003] The structure of the existing front transverse thrust rod fixing seat is as Figure 1-2 shown. The front transverse thrust rod assembly is fixed on the thrust rod fixing seat assembly by M18 flange bolts and 4-M18 flange nuts. The thrust rod fixing seat assembly includes a connecting part of the thrust rod fixing seat assembly and a reinforcing part of the thrust rod fixing seat assembly welded below it. The reinforcing part of the thrust rod fixing seat assembly is welded on the frame rectangular tube. Through Figure 2 it can be intuitively seen that the overall structural strength of the thrust rod fixing seat assembly is poor, and there are the following problems in the use process:

[0004] 1) When the front transverse thrust rod assembly is stressed due to the operation of the whole vehicle, it can only be stressed locally and cannot decompose the force well, easily causing the cracking of one side of the rectangular tube in the local part of the front frame assembly;

[0005] 2) In the structure of this assembly, there are no stress concentration elimination parts at all the rectangular tube connection parts. When the thrust rod fixing seat assembly is subjected to external forces, the force can only be directly transmitted to the welding position of the rectangular tube connected to it, and the contact surface of the welding position is very small (the cross-section of the rectangular tube), so it is easy to cause the tearing of the weld at the rectangular tube connection position where the force is applied. Content of the Utility Model

[0006] In order to solve the above technical problems, the utility model provides a front transverse thrust rod fixing seat for an 8.6-meter fully loaded city bus.

[0007] The technical solution adopted by the present invention is a front transverse thrust rod fixing seat for an 8.6-meter fully loaded urban bus, which includes an outer frame of the front frame assembly. An inner frame of the front frame assembly is installed inside the outer frame of the front frame assembly, and a fixing seat body is installed above the head end of the inner frame of the front frame assembly. The inner frame of the front frame assembly includes two sets of brackets arranged oppositely. Each set of brackets includes two cross beams arranged parallel to each other up and down. Columns are fixedly connected near both ends between the two cross beams. Arc members are provided at the joints between the outer sides of the two cross beam ends and the outer frame of the front frame assembly. The inner frame of the front frame assembly is welded to the outer frame of the front frame assembly through the cross beams and the arc members.

[0008] Preferably, internal reinforcing member one and internal reinforcing member two with a U-shaped structure are respectively welded to both ends of the two sets of brackets of the inner frame of the frame assembly. Internal reinforcing member one is located below the fixing seat body. Both internal reinforcing member one and internal reinforcing member two are respectively welded to the outer frame of the front frame assembly and the inner frame of the front frame assembly, and a plurality of mounting holes are provided on internal reinforcing member two.

[0009] Preferably, a reinforcing flat plate is welded above internal reinforcing member two, and mounting holes are provided on the reinforcing flat plate.

[0010] Preferably, the fixing seat body is U-shaped. A bottom plate is welded to the bottom end of the fixing seat body. Mounting holes are respectively provided at the front end and the rear end of the bottom plate, and it is fixed to the inner frame of the front frame assembly by bolts and nuts. A left reinforcing vertical plate and a right reinforcing vertical plate are respectively provided on both sides of the fixing seat body. A middle reinforcing plate is provided on one side of the left reinforcing vertical plate in front of the fixing seat. The upper part of the left reinforcing vertical plate is rectangular and matches the support feet of the fixing seat, and the lower part is triangular. The right reinforcing vertical plate is trapezoidal with a right angle.

[0011] Compared with the prior art, the beneficial effect of the present invention is that an inner frame of the front frame assembly is provided in the outer frame of the front frame assembly, and stress concentration eliminating arc members are designed at all welded connection parts between the inner frame of the front frame assembly and the outer frame of the front frame assembly. At the same time, a reinforcing flat plate and internal reinforcing member two of the thrust rod fixing seat are provided on the other side of the outer frame of the front frame assembly. The overall design structure of this structure has good integrity, can ensure that the force transmitted to the frame after the current transverse thrust rod assembly is stressed can be effectively dispersed, and the structural strength is effectively guaranteed, solving the problem that the existing fixing seat square tubes are prone to cracking. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the structure of the current front transverse thrust rod assembly fixing seat assembly;

[0013] Figure 2 It is a schematic diagram of the structure of the thrust rod fixing seat in the current front transverse thrust rod assembly fixing seat assembly;

[0014] Figure 3Schematic diagram of the structure of the fixed seat assembly of the improved front transverse thrust rod assembly;

[0015] Figure 4 Schematic diagram of the structure of the outer frame of the front section of the frame assembly after improvement;

[0016] Figure 5 Schematic diagram of the structure of the inner frame of the front section of the frame assembly after improvement;

[0017] Figure 6 Schematic diagram of the structure of the fixed seat body after improvement;

[0018] Figure 7 Schematic diagram of the structure of the first internal strengthening member;

[0019] Figure 8 Schematic diagram of the structure of the second internal strengthening member;

[0020] Figure 9 Schematic diagram of the structure of the strengthening flat plate;

[0021] Figure 10 Schematic diagram of the structure of the arc member. Detailed implementation manners

[0022] The present invention will be further explained below in conjunction with the accompanying drawings of the specification, so as to be better understood by those skilled in the art.

[0023] Embodiment 1

[0024] As Figure 3-10 shown, a front transverse thrust rod fixed seat based on an 8.6-meter fully loaded urban bus includes an outer frame 1 of the front section of the frame assembly. An inner frame 2 of the front section of the frame assembly is installed inside the outer frame 1 of the front section of the frame assembly. A fixed seat body 3 is installed above the head end of the inner frame 2 of the front section of the frame assembly. The inner frame 2 of the front section of the frame assembly includes two sets of brackets arranged oppositely. Each set of brackets includes two cross beams 201 arranged parallel to each other up and down. Columns 202 are fixedly connected near both ends between the two cross beams 201. Arc members 203 are provided at the joints between the outer sides of the ends of the two cross beams 201 and the outer frame 1 of the front section of the frame assembly. The inner frame 2 of the front section of the frame assembly is welded to the outer frame 1 of the front section of the frame assembly through the cross beams 201 and the arc members 203. When the front transverse thrust rod assembly is stressed due to the operation of the whole vehicle, the force will be effectively decomposed to the inner frame 2 of the front section of the frame assembly. And at this time, there are stress concentration elimination arc members on both sides of the outer frame of the front section of the frame assembly, which will effectively decompose the force into each skeleton of the whole vehicle, rather than the local force on the fixed seat assembly of the thrust rod, thus preventing the occurrence of the cracking of the side rectangular tube in the local part of the front section of the frame assembly.

[0025] At both ends of the two groups of brackets of the inner frame 2 of the above-mentioned vehicle frame assembly, an inner reinforcing member one 4 and an inner reinforcing member two 5 with a U-shaped structure are respectively welded. The inner reinforcing member one 4 is located below the fixed seat body 3. Both the inner reinforcing member one 4 and the inner reinforcing member two 5 are respectively welded to the outer frame 1 of the front-section vehicle frame assembly and the inner frame 2 of the front-section vehicle frame assembly. And a plurality of mounting holes are opened on the inner reinforcing member two 5. A reinforcing flat plate 6 is welded above the inner reinforcing member two 5, and mounting holes are opened on the reinforcing flat plate 6. On the other side where the outer frame 1 of the front-section vehicle frame assembly is connected to the inner frame 2 of the front-section vehicle frame assembly, the reinforcing flat plate 6 and the inner reinforcing member two 5 are provided, effectively solving the situation that when one side of the vehicle frame is subjected to an external force, the force no longer directly transmits to the welding position of the torque tube connected thereto, greatly increasing the contact surface of the welding position, and also preventing the weld at the connected position of the stressed torque tube from tearing. In addition, plug welding holes are designed in both the two components of the reinforcing flat plate 6 and the inner reinforcing member two 5, further increasing the welding surface of the reinforcing flat plate 6 and the inner reinforcing member two 5 with their respective connected torque tubes, and at the same time further improving the connection strength of the structure.

[0026] Further, the above-mentioned fixed seat body 3 is U-shaped. A bottom plate 7 is welded to the bottom end of the fixed seat body 3. Mounting holes are respectively opened at the front end and the rear end of the bottom plate 7, and it is fixed to the inner frame 2 of the front-section vehicle frame assembly by bolts and nuts. On both sides of the fixed seat body 3, a left reinforcing vertical plate 8 and a right reinforcing vertical plate 9 are respectively provided. On one side of the left reinforcing vertical plate 8, a middle reinforcing plate 10 is provided in front of the fixed seat body 3. The upper part of the left reinforcing vertical plate 8 is rectangular and matches the support leg of the fixed seat body 3, and the lower part is triangular. The right reinforcing vertical plate 9 is in the shape of a right trapezoid. It is designed that the fixed seat body 3 is fixedly connected to the inner frame 2 of the front-section vehicle frame assembly through the bottom plate 7, and it can be directly installed by bolts and nuts, which is convenient and fast. Among them, the left reinforcing vertical plate and the right reinforcing vertical plate are respectively arranged on both sides of the fixed seat body 3, ensuring the structural stability and strength of the fixed seat body, effectively decomposing the stress and transmitting it to the inner frame 2 of the front-section vehicle frame assembly, the inner reinforcing member one 4 and the outer frame 1 of the front-section vehicle frame assembly. The overall design has good structural integrity, can ensure that the force transmitted to the vehicle frame after the current transverse thrust rod assembly is stressed can be effectively dispersed, and the structural strength is effectively guaranteed, solving the problem that the existing fixed seat torque tube is prone to cracking.

[0027] The above-described embodiments are only used to describe 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. A front transverse thrust rod fixing seat based on an 8.6-meter full-load city bus, comprising a front section vehicle frame assembly outer frame (1), characterized in that: The front section vehicle frame assembly inner frame (2) is installed in the front section vehicle frame assembly outer frame (1), and a fixing seat body (3) is installed above the head end of the front section vehicle frame assembly inner frame (2); the front section vehicle frame assembly inner frame (2) comprises two sets of brackets arranged opposite to each other, each set of brackets comprises two horizontal beams (201) arranged in parallel up and down, and upright posts (202) are fixedly connected between the two horizontal beams (201) near both ends, and arc pieces (203) are provided at the connection between the outer sides of the ends of the two horizontal beams (201) and the front section vehicle frame assembly outer frame (1), and the front section vehicle frame assembly inner frame (2) is welded to the front section vehicle frame assembly outer frame (1) via the horizontal beams (201) and the arc pieces (203).

2. The front transverse thrust rod fixing seat based on a 8.6-meter full-load city bus according to claim 1 is characterized in that: The two sets of brackets of the inner frame (2) of the frame assembly are respectively welded with an internal reinforcement member 1 (4) and an internal reinforcement member 2 (5) of a U-shaped structure at both ends, the internal reinforcement member 1 (4) is located below the fixing seat body (3), the internal reinforcement member 1 (4) and the internal reinforcement member 2 (5) are respectively welded to the front section frame assembly outer frame (1) and the front section frame assembly inner frame (2), and a plurality of mounting holes are provided on the internal reinforcement member 2 (5).

3. The front transverse thrust rod fixing seat based on a 8.6-meter full-load city bus according to claim 2 is characterized in that: A reinforcing plate (6) is welded above the second internal reinforcing member (5), and a mounting hole is provided on the reinforcing plate (6).

4. The front transverse thrust rod fixing seat based on a 8.6-meter full-load city bus according to claim 1 is characterized in that: The fixing seat body (3) is U-shaped, a bottom plate (7) is welded to the bottom end of the fixing seat body (3), mounting holes are respectively provided at the front and rear ends of the bottom plate (7), and the bottom plate (7) is fixed to the inner frame (2) of the front frame assembly by bolts and nuts, a left reinforcing vertical plate (8) and a right reinforcing vertical plate (9) are respectively provided on both sides of the fixing seat body (3), a middle reinforcing plate (10) is provided on one side of the left reinforcing vertical plate (8) located in front of the fixing seat body (3), the upper part of the left reinforcing vertical plate (8) is rectangular matching the support foot of the fixing seat body (3), and the lower part is triangular, and the right reinforcing vertical plate (9) is a right-angled trapezoid.

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