Tank car traction sleeper without end beams and side beams

Abstract

The utility model discloses a tank car traction bolster without an end beam and a side beam, which solves the problem that in the prior art, in order to increase the volume of a tank body, when two vehicles turn, the end beam and the side beam can interfere with each other under the condition that the length of the whole vehicle is not changed, and specifically comprises a transversely arranged bolster beam and a longitudinally arranged traction beam, the sleeper beam comprises a sleeper beam bottom plate and a sleeper beam web plate arranged on the sleeper beam bottom plate; the middle of the upper end face of the sleeper beam web is an arc-shaped end face matched with a tank to be supported, and a rectangular notch is formed in the middle of the arc-shaped end face. The traction beam comprises two traction beam webs which are arranged in parallel; the two traction beam webs are arranged in the rectangular notches in a penetrating mode. The planes where the two traction beam webs are located are perpendicular to the plane where the sleeper beam web is located; the lower end of the traction beam web is fixedly connected with the sleeper beam bottom plate; a rear follower seat is arranged between the two traction beam webs, and the heights of the two traction beam webs are sequentially reduced in the direction from the end to the middle of the tank to be supported.

Description

Technical Field

[0001] The utility model relates to a railway tank car traction pillow, in particular to a tank car traction pillow without end beams and side beams. Background Art

[0002] The center-beamless railway tank car is the most common type of railway tank car. The traction bolster is the primary load-bearing structure of a center-beamless railway tank car, supporting the tank and transmitting the longitudinal forces of the train. With technological advancements, the volume of railway tank cars has increased, and the loads borne by the traction bolster have increased with the load. To meet the development requirements of larger volumes and higher axle loads for railway tank cars, it is necessary to develop a traction bolster structure with a simple structure, good manufacturability, and strong load-bearing capacity.

[0003] Existing traction and bolster assemblies primarily consist of a traction beam assembly, a bolster assembly, side beams, and end beams. The traction and bolster assembly is flanked by side beams and end beams at both ends, which inevitably increases vehicle weight. Given a given bogie axle weight, this increased vehicle weight results in a reduced payload, resulting in poor economic efficiency. For vehicles of a specified length, to maximize tank volume, while maintaining the same overall length, the tank length is increased to increase volume, thereby increasing cargo capacity. However, this approach, coupled with interference between the end beams and side beams, can lead to interference between the two vehicles during turns. Utility Model Content

[0004] In order to solve the technical problem in the prior art that when two vehicles turn, their end beams and side beams interfere with each other in order to increase the tank volume while keeping the entire vehicle length unchanged, the utility model provides a tank truck traction pillow without end beams and side beams.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tank car traction beam without end beams and side beams, which is special in that it includes a transversely arranged bolster beam and a longitudinally arranged traction beam;

[0007] The bolster includes a bolster bottom plate and a bolster web disposed on the bolster bottom plate; the middle portion of the upper end surface of the bolster web is an arc-shaped end surface adapted to the tank body to be supported, and a rectangular notch is provided in the middle portion of the arc-shaped end surface;

[0008] The traction beam includes two traction beam webs arranged parallel to each other; the two traction beam webs are inserted into the rectangular notch; the surfaces of the two traction beam webs are perpendicular to the surfaces of the bolster beam webs; the lower ends of the traction beam webs are fixedly connected to the bottom plate of the bolster beam; a rear plate seat is provided between the two traction beam webs, and the heights of the two traction beam webs decrease successively from the end to the middle of the tank body to be supported.

[0009] Furthermore, the arc angle corresponding to the arc-shaped end face is 110° to 130°.

[0010] Furthermore, the arc angle corresponding to the arc-shaped end face is 120°.

[0011] Furthermore, the traction beam further includes an impact seat;

[0012] The impact seat is vertically connected to the ends of the two traction beam webs with larger heights.

[0013] Furthermore, the impact seat is vertically connected to the two traction beam webs respectively through a connecting seat.

[0014] Furthermore, the bolster further comprises two bolster side plates;

[0015] The two bolster side plates are respectively arranged at the two ends of the bolster bottom plate and the bolster web;

[0016] The lower ends of the bolster side plates are connected to the corresponding ends of the bolster bottom plates, and the inner sides thereof are vertically connected to the corresponding ends of the bolster web plates.

[0017] Furthermore, the bolster further comprises two bolster top plates;

[0018] The two bolster top plates are respectively arranged on the top of both ends of the bolster web plate;

[0019] One end of the bolster top plate is connected to the upper end of the corresponding bolster side plate, the lower surface of the bolster top plate is vertically connected to the bolster web, and the other end of the bolster top plate is used to connect to the tank body to be supported.

[0020] Furthermore, a reinforcing rib plate is provided between the bolster bottom plate and the bolster web plate.

[0021] Beneficial effects of the utility model:

[0022] 1. The traction pillow provided by the utility model adopts a traction pillow structure without end beams and side beams, eliminating the end beams and side beams of the traditional tank car traction pillow, which not only reduces the vehicle's own weight, but also can lengthen the tank body length and increase the tank body volume while keeping the vehicle body length unchanged, thereby improving the vehicle load capacity, and avoiding the interference of the end beams when the two vehicles are connected and turning.

[0023] 2. The traction bolster provided by this utility model adopts a traction bolster structure without end beams and side beams, eliminating the end beams and side beams of traditional tank car traction bolsters. This reduces the structural weight while meeting the load-bearing capacity, forms a reasonable load-bearing structure, and evenly distributes the load on the load-bearing components. The developed structure is simple, manufacturable, and has a strong load-bearing capacity. This effectively reduces the traction bolster structure's weight, achieving a lightweight design for railway tank car traction bolsters, increasing the tank volume, and improving the vehicle's single-vehicle load capacity.

[0024] 3. The present invention optimizes the arc angle corresponding to the arc-shaped end face. At the same time, the side plates of the bolster are separately arranged from the top plate of the bolster. Compared with the existing technology, the top plate of the bolster does not need to be matched before being connected to the tank body to be supported, and the quality of assembly and welding is easily guaranteed. In addition, the problem of stress concentration at the tip is eliminated. Its overall stress is less than that of the side tube support structure of the traditional tank car without a center beam. The maximum stress under the longitudinal load condition is reduced by about 20%, and the maximum stress under the jacking condition is reduced by about 30%, thereby optimizing the fatigue life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a structural schematic diagram of an embodiment of a tank truck traction bolster without end beams and side beams.

[0026] Figure Number:

[0027] 1- bolster, 11- bolster bottom plate, 12- bolster web, 13- rectangular notch, 14- stiffening plate, 15- bolster side plate, 16- bolster top plate;

[0028] 2-traction beam, 21-traction beam web, 22-rear follower plate seat, 23-impact seat, 24-connecting seat. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings and embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The embodiment of the present invention provides a tank car traction pillow without end beams and side beams, such as Figure 1 As shown, it includes a bolster 1 and a traction beam 2;

[0031] The bolster 1 includes a bottom plate 11 and a web 12 mounted on the bottom plate 11. It also includes two side plates 15 and two top plates 16. The middle portion of the upper end surface of the web 12 is an arc-shaped end surface that matches the tank to be supported. A rectangular notch 13 is provided in the middle of the arc-shaped end surface. The arc angle corresponding to the arc-shaped end surface ranges from 110° to 130°, optimized to 120° in this embodiment. The two side plates 15 are respectively mounted at the ends of the bottom plate 11 and the web 12. The lower ends of the side plates 15 are connected to the corresponding ends of the bottom plate 11, and their inner surfaces are perpendicularly connected to the web 12. Two bolster top plates 16 are mounted on top of the two ends of the bolster web 12. One end of each bolster top plate 16 is connected to the upper end of the corresponding bolster side plate 15, and the lower end of each bolster top plate 16 is perpendicularly connected to the bolster web 12. The other end of each bolster top plate 16 is used to contact the tank to be supported. A reinforcing rib 14 is also installed between the bolster bottom plate 11 and the bolster web 12.

[0032] The traction beam 2 includes two parallel traction beam webs 21 and an impact seat 23. The two traction beam webs 21 are inserted into the rectangular notch 13. The surfaces of the two traction beam webs 21 are perpendicular to the surface of the bolster web 12. The lower ends of the traction beam webs 21 are fixedly connected to the bolster base plate 11. A rear plate seat 22 is provided between the two traction beam webs 21. The height of the two traction beam webs 21 decreases along their length. The impact seat 23 is perpendicularly connected to the taller end of each traction beam web 21 via a connecting seat 24.

[0033] Traditional vehicle traction bolster structures typically consist of a traction beam, bolster, side beams, end beams, and a connection to the tank body. The traction beam and bolster are the primary components of the traction bolster structure and the primary load transmitters. While the overall stress of the bolster structure is low, the strength margin is insufficient at locations such as the traction beam-bolster connection, the traction beam tail, the side cover plate connection, the wedge-shaped bolster side panels, and the tail of the tank body bolster side panels. As heavy loads increase, stress levels in these locations increase, necessitating design improvements to these locations to improve the overall strength of the traction bolster structure. The end beams and side beams do not bear load, so while ensuring a reasonable load on the bolster, the optimized structure eliminates the end beams and side beams.

[0034] This embodiment eliminates the side beam and end beam structures to reduce the vehicle body weight and increase the tank body length, thereby increasing the tank body volume and improving the tank truck load capacity.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention shall be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A tank car traction pillow without end beams and side beams, characterized by: It comprises a transversely arranged bolster beam (1) and a longitudinally arranged traction beam (2); The bolster (1) comprises a bolster bottom plate (11) and a bolster web (12) arranged on the bolster bottom plate (11); the middle portion of the upper end surface of the bolster web (12) is an arc-shaped end surface adapted to the tank body to be supported, and a rectangular notch (13) is provided in the middle portion of the arc-shaped end surface; The traction beam (2) comprises two traction beam webs (21) arranged parallel to each other; the two traction beam webs (21) are inserted into the rectangular notch (13); the surfaces of the two traction beam webs (21) are perpendicular to the surface of the bolster beam web (12); the lower ends of the traction beam webs (21) are fixedly connected to the bolster beam bottom plate (11); a rear plate seat (22) is provided between the two traction beam webs (21), and the heights of the two traction beam webs (21) decrease in sequence from the end to the middle of the tank body to be supported.

2. The tank car traction bolster without end beams and side beams according to claim 1, characterized in that: The arc angle corresponding to the arc-shaped end face is 110° to 130°.

3. The tank car traction bolster without end beams and side beams according to claim 2, characterized in that: The arc angle corresponding to the arc-shaped end face is 120°.

4. The tank car traction bolster without end beams and side beams according to claim 2 or 3, characterized in that: The traction beam (2) further includes an impact seat (23); The impact seat (23) is vertically connected to the ends of the two traction beam webs (21) with a greater height.

5. The tank car traction bolster without end beams and side beams according to claim 4, characterized in that: The impact seat (23) is respectively vertically connected to the two traction beam webs (21) through the connecting seat (24).

6. The tank car traction bolster without end beams and side beams according to claim 5, characterized in that: The bolster (1) further comprises two bolster side plates (15); The two bolster side plates (15) are respectively arranged at the two ends of the bolster bottom plate (11) and the bolster web plate (12); The lower end of the bolster side plate (15) is connected to the corresponding end of the bolster bottom plate (11), and the inner side surface thereof is vertically connected to the corresponding end of the bolster web plate (12).

7. The tank car traction bolster without end beams and side beams according to claim 6, characterized in that: The bolster (1) further comprises two bolster top plates (16); The two bolster top plates (16) are respectively arranged on the top of both ends of the bolster web plate (12); One end of the bolster top plate (16) is connected to the upper end of the corresponding bolster side plate (15), the lower surface of the bolster top plate (16) is vertically connected to the bolster web (12), and the other end of the bolster top plate (16) is used to connect to the tank body to be supported.

8. The tank car traction bolster without end beams and side beams according to claim 7, characterized in that: A reinforcing rib plate (14) is further provided between the bolster bottom plate (11) and the bolster web plate (12).

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