JPS61235261A - Car body structure for railway rolling stock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a car body structure for a railway vehicle, and more particularly to a car body structure for a railway car surface that generates and transmits traction force.

[Background of the invention]

Recently, we have been increasing the transport capacity per train and reducing the total number of trains in order to improve train operation efficiency.

A transportation method is used that allows for increased traction by multiple locomotives. In such transportation methods,
A large coupling load acts on the coupler of the locomotive, and a large bending moment, which was previously unachievable, acts on the car body. In order to increase the amount of transportation, it is also necessary to increase the output of the locomotive itself to increase the traction force. What is required of the locomotive body is that it can withstand large bending moments and be lightweight so that more of the limited locomotive weight can be distributed to equipment that increases output. .

By the way, as shown in FIG. 4, a conventional railway car body has a structure of a car body side structure 1, and both end sides of the car body side structure 1 are provided with a side entrance 2, a window 4, and a coupler 3. There is. As shown in the fifth factor, this vehicle body side structure 1 is composed of an outer plate 5 and reinforcing members such as pillars 6. A driver's cab 7 is arranged at both ends of the vehicle body, and the outer panel 5 is also attached to the side and front sides of the driver's cab 7, and the thickness and material of the outer panel 5 around the driver's cab 7 are determined by the thickness and material of the outer panel 5 at the center of the vehicle body. The same material as the outer panel 5 is normally used. On the other hand, as mentioned above, the distribution of stress caused by the bending moment due to the large coupler load is affected by side entrance 2
and concentrated around window 4. Therefore, in order to create a conventional railway car body that can withstand large bending moments, the first method is to increase the thickness of the outer skin 5 to increase the rigidity of the car body and reduce the stress level generated.
The second method is to make the material of the outer panel 5 stronger so that it can withstand high stress, or the third method is to make the pillars 8 located around the driver's cab 7 strong.
There were ways to reduce the stress levels around the cab 7.

First, in the first method of increasing the rigidity by increasing the plate thickness,
The area of the outer skin 5 that covers the entire vehicle body is large, and it is difficult to reduce the weight of the vehicle due to the large area. In the method of

Generally, as the strength increases, the price of the component also increases.

Moreover, there are drawbacks such as increased difficulty in processing such as welding and bending, and it is not advantageous from the viewpoint of manufacturing costs to use such materials over a large area. In the method of strengthening the
It is necessary to make it strong while maintaining internal livability, and there is a limit naturally. Furthermore, the mode of the load generated on the side surface of the driver's cab 7 is the so-called shear strain type acting on the outer panel 5, and it is difficult to provide sufficient reinforcement with columns and girders arranged vertically or horizontally. There is a problem like this. (Japanese Unexamined Patent Publication No. 56-82659) [Object of the Invention] The present invention was made in view of the above points, and its purpose is to have a simple structure and to achieve a large bending moment without significantly increasing the weight. The object of the present invention is to provide a car body structure for a railway vehicle that can bear the above burden.

[Summary of the invention]

In order to achieve the above object, the present invention provides a railway car body structure that generates and transmits traction force by changing the thickness and material of the outer plate forming the longitudinal end of the car body side fence, for example, the driver's cab. , it is possible to obtain a vehicle body that is lightweight as a whole and can bear a large bending moment.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

The outer panels 5 constituting the vehicle body side fence 1 are of two types: a thick outer panel 5A and a thin outer panel 5B.The thick outer panel 5A covers the area around the driver's cab 7, and the thin outer panel 5B covers other parts. The pillars 6 and 8 are the same as the conventional arrangement. With this configuration, the stress level generated around the side entrance 2 and window 4 formed around the driver's cab 7 can be lowered by the thick plate of the outer panel 5A, and at the same time, the rigidity of the plate itself is increased. Therefore, it is possible to simplify the pillars 8 and the like in this part (reducing the number of installed pillars, small cross-section pillars, etc.). Furthermore, when a load W is applied to the coupler 3 from both sides, the load mode acting around the driver's cab 7 is a shear strain type as shown in FIG. Increasing the thickness of the outer plate 5A to bear the shear load is a more rational structure than reinforcing reinforcing members such as the pillars 8.

As another embodiment of the present invention, the portion corresponding to the outer panel 5A in FIG. 5 is replaced with a high-strength member.

As shown in FIG. 6, a structure may be adopted in which the material is replaced with a material having strength corresponding to the stress level generated.

According to this embodiment, it is possible to obtain a vehicle body that can withstand twice the load without increasing the vehicle weight at all, for example, by using a material with twice the strength.

In addition to the above-mentioned embodiment, instead of making the entire side surface of the driver's cab 7 a uniform member, the outer panel 5A only around the side entrance 2 and window 4 where high stress occurs is made of thick or strong material. It is also possible to replace it with a higher-priced member and obtain the same effect.

Increasing the rigidity or strength of the side surfaces of the driver's cab 7 also has the effect of reducing damage to the driver's cab in the event of an accident such as a collision, which is beneficial for driver safety.

〔Effect of the invention〕

As explained above, the present invention provides a car body structure for a railway vehicle, in which the outer panel forming the driver's cab is made to be more rigid than other outer panels, so that the structure is simple and does not significantly increase the weight. A railway vehicle body structure that can bear a large bending moment can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the car body structure for a railway vehicle according to the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a tendency of strain occurring in the car body structure shown in Fig. 1. Side view showing 4th
The figure is a side view showing a general railway vehicle body, and Figure 5 is a side view of a general railway vehicle body.
FIG. 6 is a side view showing the distribution of stress generated on the side surface of the general railway vehicle body shown in FIG. 4. 1... Vehicle side structure, 2... Offset entrance, 3... Connector,
4... Window, 5... Outer plate, 6... Column, 7... Driver's cab, 8... Pillar in driver's cab, 9... Equal stress line, 10...
...Shear strain.

Claims (1)

[Scope of Claims] 1. In a car body structure for a railway vehicle comprising a car body side structure that generates and transmits traction force and has columns and an outer plate, the outer plate at the longitudinal end of the car body side structure is attached to another side structure. 1. A car body structure for a railway vehicle, characterized in that the body structure is made to be more rigid than the outer panels of the parts so as to bear the bending moment acting on the side structure of the car body. 2. The car body structure for a railway vehicle as set forth in claim 1, wherein the outer plate of the car body side structure end portion is thicker than other outer plates. 3. The car body structure for a railway vehicle according to claim 1, wherein the outer plate of the car body side structure end portion is made of a material having higher strength than other outer plates.