High-strength traction and bolster structure provided with wheel falling auxiliary device and integrated seat

Abstract

The invention provides a high-strength traction and bolster structure provided with a wheel falling auxiliary device and an integrated seat, and relates to the technical field of vehicle underframes, the high-strength traction and bolster structure comprises a traction and bolster device, the traction and bolster device comprises a bolster beam and a traction beam, an integrated mounting seat is welded to one side of the bolster beam, and a vehicle body air spring seat is arranged on the bolster beam; four pin holes are symmetrically formed in the left side and the right side of the vehicle body air spring seat; four positioning pins are welded on a bogie air spring plate matched with the vehicle body air spring seat; and the integrated mounting seat is used for connecting the vertical shock absorber and the anti-side-rolling torsion bar. The traction bolster structure is provided with the wheel falling auxiliary device, collision between the vehicle body and the bogie during wheel falling is avoided, the construction difficulty is reduced, the assembly efficiency is improved, and the personal potential safety hazards to operators are effectively prevented; by adopting the cast steel integrated mounting seat, the welding amount is reduced, the connection strength is improved, the thread sleeve is prevented from loosening in the operation process, and the vehicle maintenance cost is reduced; a draw beam tailor-welded structure is optimized, plates are optimized to be of a sectional material structure, the weight is reduced, and the strength safety coefficient is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle underframes, and in particular to a high-strength traction pillow structure equipped with a wheel drop auxiliary device and an integrated seat. Background Art

[0002] The aluminum alloy traction sleeper structure of urban rail vehicles is installed at the end of the chassis and connected to the bogie and coupler buffer device. It mainly bears the impact load and support load during the operation of the vehicle and is a very important key component of the vehicle body.

[0003] The traction bolster structure is mainly composed of a bolster and a traction beam. The bolster is provided with interfaces such as vertical shock absorbers, anti-roll torsion bars, and air spring air intakes. The vertical shock absorber mounting seat and the anti-roll torsion bar mounting seat are made of aluminum and welded on the bolster. The traction beam is mainly composed of welding components such as the traction beam lower cover plate, upper cover plate, vertical plate, vertical plate reinforcement plate, and hook mounting seat. When the wheels are dropped, the crane hoists the vehicle body and slowly drops it. The steering overhead air spring air intake boss needs to cooperate with the vehicle body air spring seat. Because the frame side beams block it, and the air spring seat and the air spring air intake boss have high matching precision, it is difficult for the operator to see from the side whether the air spring seat and the air spring air intake boss are aligned, and the operator needs to put his head under the vehicle to observe.

[0004] The traditional traction sleeper structure is not equipped with a wheel-drop auxiliary device. It is not easy to observe whether the car body and the bogie are properly assembled during the wheel-drop process, which may easily cause collisions between the car body and the bogie, increase the difficulty of construction, reduce production efficiency, and pose a hidden danger to the personal safety of operators. The traction beam adopts an aluminum plate welding structure, which increases weight, requires a large amount of welding, is easy to deform, and has a low strength safety factor. Through simulation calculations, the variable cross-section area of ​​the traction beam is a high stress area, and the allowable stress value of the weld is only 125Mpa. The mounting seat cannot be tapped on aluminum material, and a pre-embedded steel screw sleeve is adopted. During the later maintenance and repair, the screw sleeve is easy to loosen, reducing the connection strength. Summary of the invention

[0005] According to the above-mentioned technical problems that the existing traction bolster structure is not equipped with a wheel drop auxiliary device, it is difficult to observe whether the car body and the bogie are assembled in place, the safety factor of the traction beam is low, and the connection strength will be reduced during the later maintenance process, a high-strength traction bolster structure equipped with a wheel drop auxiliary device and an integrated seat is provided. The present invention is mainly based on adding a wheel drop auxiliary device to the traditional traction bolster device and inventing a cast steel integrated mounting seat, which is convenient for operators to construct and improves operational safety.

[0006] The technical means adopted by the present invention are as follows:

[0007] A high-strength traction and pillow structure equipped with a wheel-drop auxiliary device and an integrated seat, comprising a traction and pillow device, the traction and pillow device comprising a bolster beam and a traction beam, an integrated mounting seat is welded to one side of the bolster beam, a vehicle body empty spring seat is arranged on the bolster beam, four pin holes are symmetrically processed on the left and right of the vehicle body empty spring seat, four locating pins are welded to the bogie empty spring plate that matches the vehicle body empty spring seat; the integrated mounting seat is used to connect a vertical shock absorber and an anti-roll torsion bar.

[0008] Furthermore, the diameter size tolerances of the pin hole and the locating pin match the tolerances of the vehicle body empty spring seat and the bogie empty spring intake boss.

[0009] Furthermore, the height dimension of the locating pin must be satisfied to ensure that the pin hole contacts the locating pin first, and the vehicle body empty spring seat contacts the steering rack empty spring intake boss later.

[0010] Furthermore, the traction beam is formed by splicing a traction beam upper plate profile and a traction beam lower plate profile.

[0011] Furthermore, the material of the integrated mounting seat is cast steel B+, and a plurality of threaded interfaces are processed on the integrated mounting seat, and the vertical shock absorber and the anti-roll torsion bar are fixedly connected to the integrated mounting seat through the threaded interfaces respectively.

[0012] Furthermore, a plurality of rivet mounting holes are processed on the integrated mounting seat, and the integrated mounting seat is connected to the bolster through high-strength single-sided annular groove rivets.

[0013] Furthermore, the lower vertical plate profile of the traction beam is made of 6082-T6 material.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The traction bolster structure of the present invention is provided with a wheel-drop auxiliary device to avoid collision between the vehicle body and the bogie when the wheel is dropped, thereby reducing construction difficulty, improving assembly efficiency, and effectively preventing hidden dangers to the personal safety of operators.

[0016] The present invention adopts a cast steel integrated mounting seat, which reduces the amount of welding, increases the connection strength, avoids loosening of the screw sleeve during operation, and reduces the vehicle maintenance cost.

[0017] The present invention optimizes the welding structure of the traction beam, optimizes the plate into a profile structure, reduces the weight, reduces the welding amount, and increases the strength safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the existing traction pillow structure.

[0020] Figure 2 The figure is a schematic diagram of the existing wheel assembly of the vehicle body.

[0021] Figure 3 Schematic diagram of the existing mounting base.

[0022] Figure 4 It is a schematic diagram of the pillow pulling device in the present invention.

[0023] Figure 5 It is a schematic diagram of the pin hole in the present invention.

[0024] Figure 6 Schematic diagram of the positioning pin.

[0025] Figure 7 It is a schematic diagram of the wheel-drop assembly of the vehicle body in the present invention.

[0026] Figure 8 It is a schematic diagram of the integrated mounting base in the present invention.

[0027] Fig. 9 It is a schematic diagram of the traction beam structure in the present invention.

[0028] Fig.10 for Fig. 9 Section view of the middle AA plane.

[0029] Fig.11 It is a cross-sectional view of the lower vertical plate profile of the traction beam in the present invention.

[0030] In the figure: 1, pillow block; 2, traction beam; 11, vehicle body empty spring seat; 12, pin hole; 13, integrated mounting seat; 131, threaded interface; 132, rivet mounting hole; 21, traction beam upper plate profile; 22, traction beam lower plate profile. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] like Figure 1-11 As shown, the present invention provides a high-strength traction pillow structure equipped with a wheel drop auxiliary device and an integrated seat, including a traction pillow device, the traction pillow device including a bolster beam 1 and a traction beam 2, an integrated mounting seat 13 is welded on one side of the bolster beam 1, a vehicle body empty spring seat 11 is arranged on the bolster beam 1, four pin holes 12 are processed symmetrically on the left and right sides of the vehicle body empty spring seat 11, and four locating pins are welded on the steering overhead spring plate matched with the vehicle body empty spring seat 11; the pin hole 12 and the locating pin diameter size tolerance match the tolerance of the vehicle body empty spring seat 11 and the steering overhead spring air intake boss, ensuring that after the pin hole 12 and the locating pin are matched, the vehicle body empty spring seat 11 and the steering overhead spring air intake boss can be matched, and the locating pin height size needs to ensure that the pin hole 12 contacts the locating pin first, and the vehicle body empty spring seat 11 and the steering overhead spring air intake boss contact first, which plays a positioning role. Observed from the side of the vehicle, when the pin hole 12 and the locating pin are aligned, the vehicle body falls, and the vehicle wheel drop is completed.

[0035] The integrated mounting seat 13 is used to connect the vertical shock absorber and the anti-roll torsion bar. The material of the integrated mounting seat 13 is cast steel B+. Four threaded interfaces 131 are processed on the integrated mounting seat 13. The vertical shock absorber and the anti-roll torsion bar are fixedly connected to the integrated mounting seat 13 through the threaded interfaces 131 respectively; a plurality of rivet mounting holes 132 are processed on the integrated mounting seat 13. The integrated mounting seat 13 is connected to the bolster 1 through high-strength single-sided annular groove rivets;

[0036] The traction beam 2 is formed by splicing the upper vertical plate profile 21 of the traction beam and the lower vertical plate profile 22 of the traction beam. The weld position is avoided in the high stress area of ​​the variable cross-section area. The lower vertical plate profile 22 of the traction beam is made of 6082-T6 material. By optimizing the design of the profile thickness and fillet, the allowable stress in the high stress area is increased to 260MPa. Through the strength calculation and test verification of the whole vehicle, this structural strength fully meets the requirements.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-strength traction pillow structure equipped with a wheel drop auxiliary device and an integrated seat, characterized in that: The invention comprises a traction pillow device, the traction pillow device comprises a bolster (1) and a traction beam (2), an integrated mounting seat (13) is welded on one side of the bolster (1), a vehicle body empty spring seat (11) is arranged on the bolster (1), four pin holes (12) are processed symmetrically on the left and right sides of the vehicle body empty spring seat (11), and four positioning pins are welded on the bogie empty spring plate matched with the vehicle body empty spring seat (11); the integrated mounting seat (13) is used to connect a vertical shock absorber and an anti-roll torsion bar.

2. The high-strength traction bolster structure equipped with a wheel drop auxiliary device and an integrated seat according to claim 1, characterized in that: The diameter size tolerances of the pin hole (12) and the positioning pin match the tolerances of the vehicle body empty spring seat (11) and the bogie empty spring air intake boss.

3. The high-strength traction bolster structure equipped with a wheel drop auxiliary device and an integrated seat according to claim 1, characterized in that: The height dimension of the positioning pin must be sufficient to ensure that the pin hole (12) contacts the positioning pin first, and the vehicle body empty spring seat (11) contacts the steering rack empty spring air intake boss later.

4. The high-strength traction bolster structure equipped with a wheel drop auxiliary device and an integrated seat according to claim 1, characterized in that: The traction beam (2) is formed by splicing a traction beam upper plate profile (21) and a traction beam lower plate profile (22).

5. The high-strength traction bolster structure equipped with a wheel drop auxiliary device and an integrated seat according to claim 1, characterized in that: The material of the integrated mounting seat (13) is cast steel B+, and a plurality of threaded interfaces (131) are processed on the integrated mounting seat (13), and the vertical shock absorber and the anti-roll torsion bar are respectively fixedly connected to the integrated mounting seat (13) through the threaded interfaces (131).

6. The high-strength traction bolster structure equipped with a wheel drop auxiliary device and an integrated seat according to claim 5, characterized in that: A plurality of rivet mounting holes (132) are processed on the integrated mounting seat (13), and the integrated mounting seat (13) is connected to the bolster (1) via high-strength single-sided annular groove rivets.

7. The high-strength traction bolster structure equipped with a wheel drop auxiliary device and an integrated seat according to claim 4, characterized in that: The traction beam lower plate profile (22) is made of 6082-T6 material.

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