JPS58162836A - Centrifugal force applying device of truck tester - Google Patents

Abstract

PURPOSE:To apply the lateral force equal to the centrifugal force when a vehicle passes through a curved path to the truck to be tested, by inclining the simulated vehicle body mounted on the truck to be tested by means of a centrifugal force applying device. CONSTITUTION:A truck tester is constituted of rail wheels 3 which support and rotate the wheels 2 of a truck 1 to be tested, a driving mechanism 4, a simulated vehicle body 5 and a vehicle body supporting device 7. A centrifugal force applying device 8 is of a weight system, wherein a pulley 19 is pivotted to a bracket 18 of a slide base 17 mounted freely movably upward and downward on the front surface to a support base 16 erected on the pit on the side of the body 5, and the forward end of a wire 20 put on the pulley 19 is connected to the bracket 21 on the side face of the truck 5. A weight 24 is mounted to the bottom end of the wire 20 by means of a weight bar 22 and a seat plate 23 so as to permit free adjustment of the weight. The weight of the weight 24 applies lateral force upon the body 5 thereby tilting said body.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centrifugal force applying device for a bogie testing machine that subjects a bogie of a railway vehicle to a performance test equivalent to actual running when passing through a curved road.

Railway vehicles travel not only in straight lines but also on curved roads with various radiuses, but the centrifugal force generated when passing a curved road is a lateral pressure applied to the wheels, a lateral force to the rail, and a rolling force of the vehicle. , derailment, etc. have a big influence.

By the way, when a railway vehicle runs on a curved road, even if the rails are canted, if the speed exceeds the set speed, centrifugal force acts on the vehicle body, causing it to tend to fall to the outside of the curved road. If the speed is below the set speed, inward tilting will occur due to cantover, and unless the performance test for the bogie is conducted under conditions equivalent to these various conditions, it will not be a guarantee of safety during operation. .

By the way, the conventional testing machine is 1, for example, Utility Model Publication No.
As disclosed in No. 22, the wheels of the test bogie were supported by the rails, and the test was conducted by rotating the rails in cold conditions with a load applied to one bogie, so the test was carried out in a prone position when traveling in a straight line. Performance tests can only be carried out on roads, and tests that correspond to actual driving, that is, tests on curved roads, cannot be carried out, so there is a problem in that safety cannot be sufficiently confirmed.

This invention has been made to solve the above-mentioned problems, and it is possible to provide the bogie under test with test conditions equivalent to those when running on an actual curved road, thereby making it possible to more reliably test the bogie. The purpose is to provide a centrifugal force application device for testing machines that can confirm safety.

Structure of the present invention: A bogie testing machine in which a bogie to be tested having a simulated car body mounted on the upper part thereof is placed on a rail shaft, and a performance test of the bogie to be tested is performed by rotating the tension wheels. , a bracket fixed to one side of the simulated vehicle body, a bracket mounted so as to be movable up and down on a support stand arranged at a position facing the bracket, and a pulley rotatably pivoted to the bracket. This is characterized in that a wire or the like fixed to one end of the bracket is guided through a pulley, and a load adding machine #1 is attached to the other end of the wire rope.

Hereinafter, this invention will be explained based on the embodiments shown in the accompanying drawings.

As shown in the figure, the one-bogie testing machine includes a rail ring (3) that supports and rotates the wheel (2) of the test cart (1), and a drive mechanism (4) that rotates the rail ring (3). , a simulated car body (5) placed on the test trolley (1), and this car body (5).
) is fixed via a spherical support stand (6) so that it does not move in the front-rear direction.

Two of the above-mentioned rail wheels (3) are arranged at a predetermined distance to support the wheels (2) of the test trolley (1), and the drive mechanism (4) is connected to the propulsion shaft (9) and the deceleration shaft. It is formed by a drive shaft αυ that interlocks the reduction gear, and a drive machine that interlocks with the drive shaft 0 through a joint (b), and an electric motor (to)
Rotation can be applied to the wheels (2) on the rails (3) by the rotational drive of the wheels (3). Furthermore, the simulated vehicle body (85) is tiltably supported by springs provided on both sides of the test trolley (1), and on this vehicle body (6) there is a load (sleeves) equivalent to the vehicle. It is placed.

The present invention provides a centrifugal force applying device (8) attached to the above-mentioned known bogie testing machine, which applies a centrifugal force to a simulated vehicle body (5).
This is to apply a lateral force equivalent to the centrifugal force generated when a vehicle passes a curve, and FIGS. 2 to 5 show examples employing the weight system.

A support stand (b) is placed on the pit on the side of the simulated car body (5).
A pulley (B) is attached to the bracket model of the slide stand αη, which is attached to the front of the support stand so that it can be raised and lowered freely.
The tip of the wire suspended from this pulley (to) is connected to the bracket provided on the side of the simulated trolley (5), and the lower end of the wire is attached to a weight zelkova and a seat plate. A weight-
is installed so that the weight can be increased or decreased freely.

In other words, the weight of the upper weight gives a lateral force to the simulated car body (5) and causes it to tilt, but as shown in Figure 4, the weight of the car body (5)
Hand A is fitted with an adjustment screw screwed onto the slide base (B) at the end of the slide base so that the direction of the tensile force is along the direction of inclination of the hand A.
The height position of the pulley (4) can be freely adjusted by turning the pulley (4).

Figure 6 shows a second example of the centrifugal force applying device (8) in which a spring method is adopted, and the screw that passes through the fixing bracket attached to the bit (B) at the lower end of the wire).
A coil p spring core is installed between the nut (2) screwed into the lower part of the screw (W1) and the fixing bracket (2), and a tensile force is applied to the wire (2). This s
In the second example, the tensile force can be changed by adjusting the force applied by the nut.

Also, as a sixth example, the cylinder system shown in FIG. 7 can be adopted, and the piston rod (■) is a wire) and 1! ! It is preferable to use air or hydraulic oil as the pressure fluid.

This invention has the above-mentioned configuration, and firstly, we will focus on a method of testing a bogie.

As shown in Figures m11A to Tsumugi 3, the wheels (2) of the test vehicle (1) are placed on the track wheels (3) and the simulated vehicle body (5) is connected to the vehicle (1) via springs (6). Install this car body (
6) Assemble the load (9) equivalent to the weight of the vehicle on top.

- Connect the wires of the centrifugal force tube device (8) to the side of the vehicle body (5), calculate in advance the centrifugal force generated when the vehicle passes through a curved road, and subtract this value from the weight (C). Set as weight or spring tension or cylinder device pressure.

#i the mock trolley (5)! 4 Tilt it as shown in the figure.

The centrifugal force OF the vehicle body when the vehicle passes through a curve can be obtained from the following equation, which is illustrated in FIG.

However, V: Vehicle running speed, R: Curve radius.

W: Vehicle weight, G: True center position 1, φ: A state in which a lateral force commensurate with the centrifugal force when passing on a curved road is applied to the simulated vehicle body (5), as shown in ε above the vehicle body inclination angle by 1. Then, if you start the electric motor and rotate the vehicle (2) via the rail vehicle (3),
It is difficult to perform a performance test on the test bogie (1) under the same conditions as when passing through a curve.

As described above, according to the present invention, Kl on the rail axis! The simulated vehicle body mounted on the electrified test trolley was tilted by a centrifugal force applying device, so a lateral force equivalent to the centrifugal force generated when the vehicle passes through a curved road section was applied to the simulated vehicle body, and the bogie was tilted. The performance of the bogie can be tested, and the performance of the bogie due to centrifugal force such as wheel lateral pressure and derailment can be checked under the same conditions as in actual running, which can significantly improve the safety of railway vehicles. can.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a testing machine equipped with a centrifugal force applying device according to the present invention, and Fig. 2 is a side view of the same, and Fig. 6 is a side view of the same.
The figure is an open plan view, Figure 4 is a side view showing a state in which lateral movement is applied to the main parts in the same as above, Figure 5 is an enlarged side view of the centrifugal force applying device in the same as above, and Figure 6 is a side view of the centrifugal force applying device in the same as above. FIG. 7 is a longitudinal side view showing the second example, and FIG. 7 is a longitudinal side view showing the third example. (1) is the test trolley, (2) is the wheels, (3) is the rail wheels,
■ is the drive mechanism, (b) is the simulated vehicle body, (8) is the centrifugal force applying device, (2) is the spring, +L5) is the load, inside is the wire, - is the weight, - is the coil spring. Patent Applicant: Sumitomo Metal Industries, Ltd.

Claims (1)

[Claims] (1) In a bogie testing machine that performs a performance test of the test bogie by placing a test bogie with a simulated car body on the top on a rail shaft and rotating the rail wheels,
A bracket F fixed to one side of the simulated vehicle body, a bracket mounted so as to be movable up and down on a support stand disposed at a position facing the 1M bracket, and a pulley rotatably pivoted to the bracket. , a wire or the like fixed at one end to the bracket is guided through a pulley, and a loading mechanism is attached to the other end of the wire, so that the centrifugal force generated when the wheels pass through a curved road on the simulated vehicle body is A centrifugal force adding device for a bogie testing machine characterized by applying an equivalent lateral force.