JPS6291360A - Truck 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] [Industrial Field of Application] The invention of 3: is such that when the vehicle travels on a curve, the bogie and the wheelset are
(This relates to a railway vehicle bogie that rotates relative to the body.

[Conventional technology]

11 = Various types of self-steering bogies (radial bogies) have been proposed, including the 5hefl'el type. There is one that electrically detects this and connects it to a mechanism to perform forced steering.

FIG. 6 shows the ideal state of a railway vehicle passing through a curve. 10 is a curved track, 12 is a car body, 14°16 is a car body 12
18 is a bogie frame, 20a, 20b are axles, 22 is a wheel, 24 is a center line of the longitudinal length of the bogie frame 18, 26 is a center of curvature of a curved track lO, 28 is the center line of the longitudinal length of the vehicle body 120. In an ideal passing condition, the axles 20a, 20b and the bogie frame 18
The center line 24 of the vehicle body 12 and the center line 28 of the vehicle body 12 are the center of curvature 26
gather at Also, the truck 14 must rotate by O with respect to the car body 12, and the axle 20a near the end of the car body 12,
It rotates further by φ than the bogie frame 18. Therefore, it must rotate by θ+ψ with respect to the vehicle body 12, and conversely, it must return by ψ from the bogie frame 18 of the axle 20b near the center of the vehicle body 12, and therefore must rotate by 0−ψ with respect to the vehicle body 12.

In addition, dimensions a, Q, and H in FIG. 6 will be described later.

[Problems to be solved by the present invention] In the conventional forced steering type self-steering bogie, the axle 20a relative to the car body 12 is
, It was difficult to control the rotation angle of 20b.

An object of the present invention is to propose a bogie for a railway vehicle that can steer an axle with respect to a car body so that the axle has a preferable rotation angle with respect to the car body.

[Means for solving problems]

According to the railway vehicle bogie according to the present invention, the support device supporting the end of the axle supports the end of the axle so as to be movable in the longitudinal direction of the bogie, and the axle box moves toward the center of the bogie. It has an extension that extends at its distal end and is rotatably connected to the vehicle body or to a member that is non-rotatable with respect to the vehicle body.

〔Example〕

The invention will now be described with reference to Examples.

In FIG. 1, elements corresponding to those in FIG. 6 are indicated by the same reference numerals as in FIG. 6, and their description will be omitted.

30a and 30b are extensions of the axle box body of the axle 2 (la) near the end of the vehicle body 12, and the axle 211b near the center, respectively;
It extends in the direction of the perpendicular bisector of. :) 2 is the car body 12
34 is the center line of the vehicle body 12 extending in the longitudinal direction of the platform 11.
14 is a center line extending in the longitudinal direction, 3 is the center of the truck 12, 38 is the center of the truck: 36 is a straight line perpendicular to the center line 32 of the truck. The extensions 30a, 30b are rotatably connected at their ends 40a, 4nb to the vehicle body or to a member that does not rotate with respect to the vehicle body. Extension part 30
The extension a ends near the center 36 of the truck, whereas the extension 30b extends beyond the center. Naj
The truck 14 is rotatably connected to the lower part of the car body 12 about a center 36.

The connection point of the extensions 30g and 30b to the vehicle body 12 or a non-rotating member with respect to the vehicle body 12, that is, the extension 30a,
The ideal positions of the ends 40a and 40b of 3flb will be analyzed. FIG. 2 shows the dimensions of each part for analyzing the position of the connection point (end 40a) of the extension 30a of the axle box body related to the axle 20a near the end of the vehicle body 12. In the subsequent analysis, each symbol will be defined as follows.

(FIGS. 1, 2, and 6) a: Half the distance Q between both axles 20a and 20b of the bogie 14 = Center 36 of the two bogies 24 at the bottom of the vehicle body 12
half of the distance R: radius of curvature e of the center line of the track 10,: connection point of the wheel axle on the end side of the vehicle body 12 with the vehicle body 12 (
Distance eL between the end 40a) and the center of the truck 36: Distance d between the connection point (end 40b) with the vehicle body 12 of the wheel axle on the center side of the vehicle body 12 and the center of the truck 36: Distance d between the axles 20a, 20b and the center 3 of the truck
Distance θ from 6: rotation angle ψ of the bogie frame 18 with respect to the car body 12
: rotation angle ψ of the axles 20a, 20b with respect to the bogie frame 18,
6t: In order to formulate and consider the problem of the angles that the axles 20a, 20b should make with the bogie frame 18 in order for the axles 20a, 20b to face the center of curvature 26, in addition to the definitions of each symbol above, the following evaluation function is used. Considering this, e (e is el or e) that minimizes this evaluation function J will be regarded as the optimal dimension.

However, θ-AX is the angle at which the bogie frame 1B rotates with respect to the vehicle body 12 when the vehicle passes through the trajectory with the minimum radius of curvature. In solving the problem, make the following assumptions.

i) The front and rear stiffness of the shaft spring is soft to 1"1.min, and does not hinder the rotation of the bogie frame 18 relative to +BBi12 when passing through a curve.

ii) The left and right rigidity of the shaft spring is sufficiently stiff, and the bogie frame 18
For any rotation of the axle 20a.

The center of 20b is the center 1i34 of the bogie frame 18 extending in the longitudinal direction of the bogie frame 18. , L: is always present.

First, consider the wheel axle near the end of the vehicle body 12.

=6- In the displacement diagram of Fig. 2.

(+1 J)S1nψ=esin (get 1.-・R51nφof= a = (ae,) cosψ+e, cosO-ノ and 122-meheni (e, sjne)'+ e, cos
BRsinθ=Q.

It is. From equations (2) and (3), equation (]) becomes. By the way, O is about 0.1 radian at most, and φ, φ,, 〈O, so sin O"' e , sinφΣψ
, sinψΣψ.

cosOΣ], cosψχ1. It is considered that the approximation of cos ψ ′ 1 holds true for −1·min. Using these, equation (4) becomes.

I can easily express this. When J≧0 and J−
(I'll yell.)

In the same way, llt body 1 physical strength 2 central axis -) is derived. From equations (6) and (7), the positions of these connection points are It can be seen that is determined only by the dimensions of the vehicle and is independent of the radius of curvature of the track.

In this way, when the vehicle passes through a curved track, 11, 11' frames (11' frame 1
8 rotates with respect to the vehicle body 12 around the center 36 of the platform l (axle 20a, 2nf+ respectively ends 40; i, 4
0b relative to the car body, and as a result, the bogie frame 1
The center line 24 of 8 and the 1 axes 20a, 20b are the center of curvature 2
It can be located on the straight line 1- towards 6.

Figures 3 to 5 are configuration diagrams of the pillow spring 11 (directly connected to the body), and are respectively a front view, a top view, and a right side view. group) γ, 4
8 is a vibration-proof rubber type axle box support device, and 50 is a compression coil spring type axle box support device (for illustrative purposes, two types of axle box support devices are shown at the same time: a vibration-proof rubber type and a compression = 1 spring type) ), 52 is a bogie frame assembly, 54 is a pillow burr device, 56 is a main motor and gear box tree attachment, and 58 is a steering pin assembly.

The above-mentioned extension parts 30a, 30b are rotatably connected to the pillow burr device 54 at the above-mentioned ends 7IOa, 40b in such a bogie of the pillow spring directly connected type. Pillow burr device 5
4 is an element of the truck and a member that does not rotate with respect to the vehicle body 12. Therefore, the extensions 30a, 30
A bogie of the type in which the pillow spring is directly connected to the car body in which the rotatable connection point b is set to the pillow burr device 54 has the following effects.

■) Despite the addition of extensions 30a and 30b,
The car body and truck can be assembled separately.

ji) The movement of the wheel axle is not affected by the relative displacement in the left-right direction between the vehicle body and the bogie.

1ii) Extensions 30a and 30b with the pillow burr device 54
Connection of -9~ The relative movement of the points is only affected by the axial spring.

In the bogies shown in Figures 3 to 5, the axle box support device is equipped with anti-vibration gear.
One type of curve shape and compression = 1 curve shape are shown,
It goes without saying that the axle box support device employed in the present invention is not limited to these types. Also, no matter what type of axle box support device is adopted, each axle box support device is soft in the longitudinal direction of the vehicle and rigid in the left and right directions.
You are required to do even 1.

〔Effect of the invention〕

As described above, according to the present invention, the central axis of the bogie (J rotates around the fixed axis with respect to the car body, and in order to control the rotation angle with respect to the car body, the axle is set at a preferable rotation angle when passing through a curve at k -1). can do.

In addition, since the axis of rotation of the axle is located near the center of the bogie, even though the position of the connection point of the extension is fixed with respect to the car body, regardless of the curvature of the curved track, 11 (It becomes possible to control the rotation angle of the shaft to a preferable value.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of an embodiment of the present invention, Fig. 2 is a diagram showing the dimensions of each part for analyzing the position of the connection point of the extension of the axle box body related to the axle near the end of the vehicle body, and Fig. 3 Figure, 4th
5 and 5 are respectively a front view, a plan view, and a right side view of a bogie of the pillow spring directly connected type, and FIG. 6 is a diagram showing an ideal state of a railway vehicle passing through a curve. In the drawings, 12 vehicle body 14 bogies 20a, 20b axles 30a, 30b are extensions of axle boxes. Patent applicant: Tokyu Car Manufacturing Co., Ltd. Figure 3 Figure 4 Figure 5

Claims (2)

[Claims] (1) A support device supported by the bogie frame that allows the end of the axle to move in the front-rear direction of the bogie, and a support device that extends toward the center of the bogie and is rotatable with the car body or a non-rotatable member relative to the car body at the tip. A bogie for a railway vehicle, characterized by having an axle box body having an extension part connected to the axle box body. (2) The railway vehicle bogie according to claim 1, wherein the bogie is a bogie with a pillow spring directly connected to the car body, and the member that does not rotate with respect to the car body is a pillow burr. .