JPH0159938B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an articulated railway vehicle body support device for supporting a plurality of car bodies on one bogie.

Conventionally, the method used to create a natural pendulum motion of a car body passing through a curve using centrifugal force was
-4728 and Special Publication No. 38-6674 are well known.
However, all of these methods include a rotating bearing portion that requires lubrication, resulting in a complex structure and the riding comfort may be adversely affected by slight friction of the roller portion.

SUMMARY OF THE INVENTION An object of the present invention is to provide an articulated car body support device for a railway vehicle that has a simple car body tilting mechanism and can be constructed at low cost.

The present invention relates to an air spring support stand that is installed on a bogie frame constituting a bogie, has an air spring installation portion above the center of gravity of the vehicle, and has a gate shape as a whole; The air spring is installed at the center of the spring installation part in the width direction of the vehicle body and has a small height in the width direction of the vehicle body, and a support device is installed on the end surface of the vehicle body and transmits the weight of the vehicle onto the air spring. This is a characteristic feature.

An embodiment of the present invention is shown in FIG. 1, and a cross section near the center of the bogie in FIG. 1 is shown in FIG.

An air spring support 6 having a large portal shape is provided on the bogie frame 4.
Two air springs 7 are arranged one above the other. In the space between the air spring support stand 6 and the bogie frame 4, there is a hollow 8 that connects the vehicle body passage. The vertical load of the vehicle body 9 is transmitted to the air spring 7 via a protrusion 10 provided on the end surface of the vehicle body as a support, and the longitudinal load is transmitted from the vehicle body 9 to the bogie by the longitudinal force transmission link 5. The bogie frame 4 is supported by an axle box 2 attached to a wheel axle 1 via an axle spring 3.

Now, when an excess centrifugal force F is applied to the vehicle's center of gravity G while passing through a curve, a rolling moment M is generated in the vehicle body because the vehicle's center of gravity G is below the vehicle body support center S, and the vehicle body tilts by an angle θ as shown in Figure 2. It is displaced to the position shown by the dotted line, and passengers inside the vehicle no longer feel any excess centrifugal force.

The air spring 7 escapes rolling of the car body, turning of the bogie on a curve, and side-to-side movement through the deflection of the air spring diaphragm, and has no frictional parts or parts that require lubrication.

In the case of this structure, since the height dimension of the vehicle body support mechanism of the bogie is increased, it is most suitable for an articulated vehicle in which the bogie is arranged between connected vehicle bodies.

FIG. 3 shows another embodiment, in which the air springs 7 are arranged in the longitudinal direction on the center line of the vehicle body, and the other structure is the same as the embodiment shown in FIGS. 1 and 2.

The effects of the above embodiment can be summarized as follows.

(a) Since the structure does not use pillow beams, the structure is simple and lightweight.

(b) The number of air springs that support one vehicle body can be reduced to two, reducing the number of air springs installed compared to conventional structures, simplifying the structure, and making it easier to configure the vehicle body support device. can.

(c) Compared to conventional vehicle body tilting mechanisms, there are fewer parts that require lubrication, making maintenance easier.

(d) Compared to conventional vehicle body tilting mechanisms, the frictional force of the moving parts is reduced, and the vehicle body tilting operation is performed smoothly, so ride comfort can be improved.

(e) Even on high cant routes, the torsional resistance of the vehicle is very low, so it follows the track well and reduces wheel unloading.

As described above, according to the present invention, in the articulated type railway vehicle body support device, the body tilting mechanism can be constructed with a simple structure and at low cost.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 is a front cross-sectional view of the vicinity of the center of the truck in FIG. 1, and FIG. 3 is a side view of another embodiment of the present invention. 4... Bogie frame, 5... Front and rear force transmission link, 6...
...Air spring support stand, 7...Air spring, 8...Horo, 9...Car body, 10...Protrusion.

Claims (1)

[Claims] 1. In an articulated railway vehicle body support device in which a plurality of car bodies are supported by one bogie, the device is installed on a bogie frame that constitutes the bogie, and the air spring installation portion is configured above the center of gravity of the vehicle. is,
An air spring support base that is entirely gate-shaped; an air spring that is installed at the center of the air spring installation part of the air spring support base in the vehicle width direction; 1. A vehicle body support device for a railway vehicle, comprising: a support member for transmitting vehicle weight onto the air spring;