JPH02303970A - Turning two-shaft bogie rotationally fitted under rail way carriage body - Google Patents

Abstract

PURPOSE: To enable high speed running at a curve by supporting an axle turnably on both ends of the frame of a bogie, carrying out the turning by the operation of a jack and also controlling the jack so as to drive to detect the entering time to the curve of a railroad. CONSTITUTION: The frame of a bogie for supporting a car body through the turning crown 3 of a central vertical axis 4 is composed of two vertical materials 1 and a lower horizontal material 2 for connecting these vertical materials 1 and the crown 3 is fixed to an upper horizontal material 5. The upper horizontal material 5 is supported to the vertical material 1 through a spring 6 constituting a secondary suspension (pillow spring) at both ends. An axle 7 is supported to both ends of such bogie frame through an axle box 8. In this case, respective axles 7 are turned freely at a small angle range around an imaginary vertical axis 20 and this turning is carried out through connection rods 30, 31 whose inner end is pivoted to a swing bar 32 driven by the jack 34 and controlls the jack 34 so as to drive at the curve detection time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-shaft swinging bogie that is rotatably mounted under the body of a railway vehicle. This two-axle bogie connects a bogie frame connected to each axle via two axle boxes and a set of primary suspensions (axle springs), and two axle boxes each located on the same side of the bogie frame. It includes two articulation devices and a device for controlling these two articulation devices.

This type of bogey is particularly known as French Painting Patent FR 2.51.
The one shown in Figure 7 of Mei No. 0,962 is known. In this prior art bogie, two articulation devices are controlled by rotation of the vehicle body about the bogie's central vertical axis. Therefore, the control device is installed on the rotating crown between the car body and the bogie frame and acts on the two articulation devices.
Contains two horizontal levers.

Since this control system is completely mechanical and cannot transmit the large stresses required to turn the axle, a primary suspension with low rigidity must be installed between the bogie frame and the axle box.

Despite the low stiffness of the interlocking bridge, the critical speed for stability in the straight section is quite high, because the two articulation devices perform the stabilizing function.

However, if the articulation device or its control device fails, the critical speed must be reduced due to the low stiffness of the secondary suspension.

In order to obtain a large critical speed, and therefore a stable bogie at high speed, it is necessary to increase the rigidity of the -order suspension, and in this case, a control device that can deform this primary suspension is required. must be installed.

The invention therefore proposes to omit the two horizontal control levers connected to the pivoting crown and to operate the two articulation devices via at least one jack controlled by an information receiving-transmitting assembly. . 5 OVIET I
NVENTIONS ILLUST ATED, 1
October 28, 987, week 8742, class
Q21. No. 87-297330142 and USSR Patent No. MSU-^-1298121 proposes total control of the rotation of the bogie of a vehicle via a jack controlled by a track detector.

Such turning performance is insufficient, especially when the track has a large radius of curvature. This is because the axles of the five bogies remain parallel to each other.

One of the objects of the invention is to realize a bogie in which each axle turns independently of each other.

Therefore, the present invention provides a bogie that is equipped with two rotatable axles and that is rotatably mounted under the body of a railway vehicle, and that is connected to each axle through two axle boxes and one primary suspension. a bogie frame, two axle boxes located on the same side of the bogie frame, two articulating devices that are connected to each other, and a control device for these two articulating devices, the control device receiving information. A bogie is provided, including at least one jack controlled by a transmitting assembly, characterized in that an information receiver is mounted on the bogie and a transmitter is installed at a fixed position at the entrance of a curve of a track.

Each swing bar of jack and articulation device (palon-n
In order to prevent mechanical transmission of stress between the two articulators, the control device is equipped with two jacks, each jack actuating the swing bar of one of the articulation devices.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in detail with two jacks as a non-limiting example, with reference to the accompanying drawings.

In FIG. 1, the bogie frame is composed of two longitudinal members 1 and a lower cross member 2 connecting these longitudinal members. The vehicle body is connected to the bogie via a pivot crown 3 on a central vertical shaft 4. Said crown is fixed to the upper cross member 5. This cross member 5 is supported at both ends by the longitudinal member 1 of the bogie frame via springs 6 that constitute a secondary suspension (pillow spring). The bogie frame is provided with two axles 7, each axle supported by two axle boxes 8.

Two axle boxes 8 are visible in FIG. 2, but only one is shown in FIG. In FIG. 3, the axle box is elastically connected to the bogie frame through four elastic block cocks 9 made up of a plurality of elastomers 1 to elastomers separated by steel plates. Second
As shown in the figure, members 10 for receiving two elastic blocks 9 are attached to both ends of the longitudinal member.

Each wheel @7 comprises two wheels 11 and one gear 1.1 electric motor 12.

The two axles can pivot to the extent that the main axle 21 of the axle can pivot about the virtual vertical axis 20 according to a small lateral movement defined by the limit positions π 22 and 23.

This small rotation requires two connecting rods 30 for each axle.
31. A connecting rod 30 is fixed to one axle box and arranged on one side of the longitudinal member, and a connecting rod 31 is fixed to the other axle box and arranged on the other side of the same longitudinal member.

Each connecting rod is pivotally connected to a swinger 32, and each swinger is also connected to another connecting rod. The articulation device includes a swinger 32 and connecting rods 30 and 31, as shown in FIG. 2, and is located within the stringer and actuates the axle box of each axle.

Figure 4 shows four plays 1~, i.e. one upward play 1~
IA shows a longitudinal member 1 made up of two lateral brakes 1-IB and one lower plate IC welded together.

As shown in FIG.
The swinger revolves around a shaft 33 and is driven by a jack 34 mounted on the outside of the plate IC.

The jack draws the servo pulp (
(not shown).

The bogie of this embodiment further comprises an onboard receiver 41 and an electronics box (not shown) that controls the two servo valves.

The line is equipped with a transmitter 42.

The receive-transmit assembly may be of barcode, electromagnetic or waveguide type.

This bogie operates as follows.

At the entrance of the curve, a transmitter sends out a signal conveying the characteristics of the curve, and a receiver receives said signal.

The signal is processed by the electronic box, and the servo valve operates the jack under the control of the electronic box.

In FIG. 2, a rod comes out from the jack 34 and brings the two wheels 11 closer together. At this time, a rod enters the jack on the opposite side and separates the remaining two wheels by the same distance, so that each axle rotates about the imaginary axis 20.

At the exit of the curve, the jack operates in the opposite direction to bring the two axles back into parallel layers.

Even if the articulation device or its control device fails while the train is running at high speed, the bogie remains stable on a straight section because the rigidity of the secondary suspension is sufficient.

[Brief explanation of drawings]

FIG. 1 is a plan view of a bogie of the present invention equipped with two jacks, FIG. 2 is a side view of the bogie, and FIG. 3 is an explanatory diagram showing the primary suspension in cross section along line 111 in FIG. 2. FIG. 4 is an explanatory view showing the longitudinal member of the bogie in cross section taken along line IV in FIG. 2. 7... Axle, 34... Jacket, 41
...Receiver, 42...Transmitter.

Claims (2)

[Claims] (1) A bogie equipped with two pivotable axles and rotatably mounted under the body of a railway vehicle, the bogie being connected to each axle through two axle boxes and one primary suspension. two articulation devices connecting the frame and two axle boxes located on the same side of the bogie frame, and a control device for the two articulation devices, said control device being controlled by an information receiving and transmitting assembly. A bogie comprising at least one jack, characterized in that an information receiver is mounted on the bogie, and a transmitter is adapted to be installed at a fixed position at the entrance of a curve in the track. 2. A bogie according to claim 1, characterized in that the control device includes two jacks, the two jacks being paired with each other and adapted to be controlled by the information receiving-transmitting assembly. .