CN201573663U - Composition of large axle load railway bath gondola underframe traction beam - Google Patents

Abstract

The utility model relates to an underframe of a railway gondola car, in particular to a traction beam of the underframe of a large-axle-load railway bath open trolley. The cross-sectional size of the traction beam can be reasonably selected according to the stress situation, and the structure and other strength design can be facilitated. It includes a draw beam installed on the bottom frame of the gondola, a center plate seat and an upper center plate installed in the middle of the draw beam, and an impact seat installed at one end of the draw beam. The traction beam is formed by enclosing and welding an upper cover plate, a lower cover plate, and two webs between the upper cover plate and the lower cover plate. In the utility model, the traction beam is composed of separate upper cover plate, lower cover plate and web plate, and the height, thickness and other dimensions of each component can be designed according to the specific structure of the car body and the stress situation, so as to meet the needs of actual use.

Description

Composition of large axle load railway bath gondola underframe traction beam

technical field

The utility model relates to an underframe of a railway gondola car, in particular to a large-axle-load railway tub gondola underframe composed of a traction beam.

Background technique

Large axle load railway freight wagons are the development direction of my country's railway freight wagons, and it is also a common trend in the development of freight wagons in the world. With the increase of the axle load, the load of the vehicle increases accordingly, and the longitudinal impact force during the operation of the vehicle also increases, which puts forward higher requirements on the carrying capacity of the traction beam of the vehicle chassis. The traction beams of large-axle heavy trucks in China are all processed by hot-rolled B-shaped steel (or cold-formed 310 hat-shaped steel) commonly used in railway freight cars. Due to the limitation of specifications, they cannot adjust the cross-section according to the actual structural stress requirements. The size is optimized, and it is directly connected with the upper and lower cover plates of the horizontal beam such as the corbel beam. The stress at the joint is relatively large, and the requirements for structural manufacturability are high. On the other hand, the overall cast steel structure with the center plate seat and the upper center plate with a diameter of 358 mm cannot meet the structural requirements of the upper center plate with a diameter of 400 mm for large axle load trucks. The cast steel upper center plate is prone to cracks and does not Easy to repair and replace.

Contents of the invention

The purpose of this utility model is to provide a traction beam composition of a large axle load railway tub gondola underframe that can reasonably select the section size of the traction beam according to the stress situation and facilitate the design of the structure and other strengths.

In order to achieve the above purpose, the utility model provides a drawing beam of a large-axle-load railway tub gondola underframe, including a drawbeam installed on the underframe of the gondola car, a center plate seat and an upper center plate installed in the middle of the draw beam, and Shock mount mounted on one end of the drawbeam. The traction beam is formed by enclosing and welding an upper cover plate, a lower cover plate, and two webs between the upper cover plate and the lower cover plate.

The two sides of the upper cover are provided with upper cover wings which are transitionally connected with the corbels on the bottom frame of the gondola.

The two sides of the lower cover are provided with lower cover wings which are transitionally connected with the corbels on the bottom frame of the gondola.

A longitudinal arc transition section is provided at one end of the web connected to the bathtub end plate on the underframe of the gondola.

The upper center disk is a forged part, and the upper center disk passes through the circular through hole on the lower cover plate and has an interference fit with the center disk seat.

The beneficial effect of the utility model is that the traction beam is composed of separate upper cover plate, lower cover plate and web plate, and the height, thickness and other dimensions of each component can be designed according to the specific structure of the car body and the stress situation, so as to meet the requirements of actual use. needs; the setting of the wing edge of the upper cover plate and the wing edge of the lower cover plate makes the traction beam and the corbel beam a circular arc transition connection, which effectively reduces the stress concentration phenomenon at the joint and increases the fatigue life of the chassis; the circle on the web The setting of the arc transition section reduces the contact surface between the web and the end plate of the bathtub, thereby significantly reducing the longitudinal force transmitted to the end plate of the bathtub and avoiding the impact on the bathtub; the upper center plate and the center plate seat of the overall casting structure Compared with the upper center disc, which is forged separately, it not only has greater strength, but also is easy to install and replace.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the installation position of a large axle load railway tub gondola underframe traction beam;

Fig. 2 is a three-dimensional enlarged structural schematic diagram of the large axle load railway tub gondola car chassis traction beam shown in Fig. 1;

Fig. 3 is a three-dimensional structural schematic diagram of the upper cover plate, the lower cover plate and the web plate assembled and welded in Fig. 2;

Fig. 4 is a schematic diagram of the three-dimensional structure of the upper cover plate in Fig. 3;

Fig. 5 is a schematic diagram of the three-dimensional structure of the lower cover plate in Fig. 3;

Fig. 6 is a schematic diagram of the three-dimensional structure of the web in Fig. 3;

Fig. 7 is a three-dimensional enlarged structural schematic diagram of the center disc seat in Fig. 2;

Fig. 8 is a schematic diagram of a three-dimensional enlarged structure of the upper center plate in Fig. 2;

In the figure, corbel 1, traction beam 2 (among them: upper cover plate 2.1, upper cover plate wing edge 2.1.1, web plate 2.2, transition section 2.2.1, lower cover plate 2.3, lower cover plate wing edge 2.3.1 ), longitudinal beam 3, bathtub 4, floor 5, side beam 6, end beam 7, upper center plate 8, center plate seat 9, impact seat 10.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, make further detailed description to the traction beam assembly of large axle load railway bathtub gondola underframe of the present utility model:

Fig. 1 has adopted the underframe of the large axle load railway bathtub open car of the present utility model, and it mainly is made up of four corbels 1, two traction beams, sixteen longitudinal beams 3, one bathtub 4, two floors 5, Four side beams 6 and four end beams 7 are mutually welded to form. Wherein, the two ends of the traction beam are respectively connected with the bathtub 4 and the end beam 7, and the middle part is connected with the corbel 1 and the longitudinal beam 3.

As shown in Figures 2 to 6, the traction beam consists of an upper cover plate 2.1, a lower cover plate 2.3, and two webs 2.2 between the upper cover plate 2.1 and the lower cover plate 2.3, which are enclosed and welded. The drawbeam 2. Among them, the two sides of the upper cover 2.1 are provided with the upper cover wing 2.1.1 which is transitionally connected with the corbel 1 on the gondola chassis, and the two sides of the lower cover 2.3 are also provided with the corbel 1. 1 The wing edge 2.3.1 of the lower cover plate connected by the transverse circular arc transition can effectively reduce the stress concentration phenomenon at the joint; a longitudinal circular arc transition section 2.2.1 is provided at the end where the web 2.2 connects with the end plate of the bathtub 4 , can significantly reduce the longitudinal force transmitted to the end plate of the bathtub 4, and avoid damage to the bathtub. An upper center disc 8 and a center disc seat 9 are installed in the middle part of the draw beam 2 , and an impact seat 10 is also installed at one end of the draw beam 2 .

As shown in FIGS. 7 and 8 , the center disc seat 9 is an integral casting, which is fixedly installed in the middle part of the draw beam 2 . The upper center plate 8 is a forged part, which passes through the through hole of the lower cover plate 2.3, has an interference fit with the bottom end of the center plate seat 9, and is welded on the lower cover plate 2.3.

Claims (9)

1. the heavy railway bathtub of a macro-axis open-top car underframe draw beam is formed, comprise the draw beam (2) that is installed on the open-top car underframe, be installed in the center filler (9) and the body center plate (8) at draw beam (2) middle part and the striker (10) that is installed in draw beam (2) one ends, it is characterized in that: described draw beam (2) by a upper cover plate (2.1), a lower cover (2.3) and be positioned at upper cover plate (2.1) and lower cover (2.3) between two blocks of webs (2.2) surround and be welded.

2. the heavy railway bathtub of macro-axis according to claim 1 open-top car underframe draw beam is formed, and it is characterized in that: the dual-side of described upper cover plate (2.1) be provided with the open-top car underframe on the horizontal arc transition bonded assembly upper cover plate wing limit (2.1.1) of sleeper beam (1).

3. the heavy railway bathtub of macro-axis according to claim 1 and 2 open-top car underframe draw beam is formed, and it is characterized in that: the dual-side of described lower cover (2.3) be provided with the open-top car underframe on the horizontal arc transition bonded assembly lower cover wing limit (2.3.1) of sleeper beam (1).

4. the heavy railway bathtub of macro-axis according to claim 1 and 2 open-top car underframe draw beam is formed, and it is characterized in that: bathtub (4) end plate bonded assembly one end on described web (2.2) and the open-top car underframe is provided with vertical arc transition section (2.2.1).

5. the heavy railway bathtub of macro-axis according to claim 3 open-top car underframe draw beam is formed, and it is characterized in that: bathtub (4) end plate bonded assembly one end on described web (2.2) and the open-top car underframe is provided with vertical arc transition section (2.2.1).

6. the heavy railway bathtub of macro-axis according to claim 1 and 2 open-top car underframe draw beam is formed, it is characterized in that: described body center plate (8) is a Forging Parts, and described body center plate (8) passes manhole and center filler (9) interference fit on the described lower cover (2.3).

7. the heavy railway bathtub of macro-axis according to claim 3 open-top car underframe draw beam is formed, and it is characterized in that: described body center plate (8) is a Forging Parts, and described body center plate (8) passes manhole and center filler (9) interference fit on the described lower cover (2.3).

8. the heavy railway bathtub of macro-axis according to claim 4 open-top car underframe draw beam is formed, and it is characterized in that: described body center plate (8) is a Forging Parts, and described body center plate (8) passes manhole and center filler (9) interference fit on the described lower cover (2.3).

9. the heavy railway bathtub of macro-axis according to claim 5 open-top car underframe draw beam is formed, and it is characterized in that: described body center plate (8) is a Forging Parts, and described body center plate (8) passes manhole and center filler (9) interference fit on the described lower cover (2.3).

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