JPS5876360A - Forced tilting method 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 The present invention relates to a forced tilting method for a railway vehicle, and more particularly to a forced tilting method that eliminates the control delay as much as possible by discharging the air in the air splash.

An example of the principle diagram of the conventional method of forcibly tilting the air is shown in Fig. 1.

Excessive centrifugal force acting on the car body 1 is detected by an acceleration needle 2 fastened to the car body 1, a signal is outputted by a compensation circuit 5, and a control valve (servo pulp) 7 detects the excessive centrifugal force acting on the car body 1.
The compressed air stored in the vehicle is supplied to one of the air springs 3 located between the bogie frame and the vehicle body 1, and a certain angle of inclination θ is applied to enable the vehicle to pass through curves. However, in the entrance transition curve and the exit transition curve, it is necessary to tilt the vehicle body several positions within a few seconds, and it has been found that a high-speed and large-capacity servo pulp 7 is required for this purpose. . However, in general, as the capacity of the servo pulp 7 increases, its responsiveness decreases, resulting in large control delays and poor curve passing performance.

An object of the present invention is to provide an air spring displacement easily and quickly in an air spring forced tilting vehicle.

It takes time to pump compressed air into the air spring through the servo pulp. In the present invention, the normal height of the air spring is raised in advance by an amount that compensates for the lack of sicant, and the air in the air spring is quickly discharged, thereby eliminating the control delay as much as possible when passing through a transition curve. shall be.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

The excess centrifugal force is detected by the accelerometer 2 attached to the vehicle body, and the magnitude thereof is detected by the compensation circuit 5.

After compensating for the characteristics, the amplifier 8 amplifies the current to an appropriate magnitude and sends it to the discharge device 9.

Figure 3 shows an air spring with a discharge device, so the coil 13 is excited by the current sent from the amplifier 8, and a force is generated between it and the permanent magnet 14, which passes through the beam to the upper plate l.
The exhaust valve 11 inserted into the exhaust hole of a part of the air spring 3' is opened, and the air inside the air spring 3' is quickly exhausted to the atmosphere.

At this time, the air in the air spring 3' is discharged to compensate for the lack of force provided in the transition curve, and the car body l is tilted as shown in Fig. 2, and the acceleration needle 2 attached to the car body l is By removing the excitation after the excess centrifugal force has disappeared, the discharge valve U is closed by the residual pressure within the air spring 3I. Since the discharge valve 11 can be controlled by changing the magnitude of the current flowing through the amplifier 8, the amount of discharged air can be changed arbitrarily.

The above is the basic function of the present invention, and an example of its application to a single curve and a circular curve on a railway vehicle line will be shown below. Exhaust the air and tilt the car body 5. When the vehicle enters the circular curve, the air discharge from the air spring 3' is stopped and the vehicle passes through the circular curve. At the end of the circular edge, the air from the other air spring 3' is exhausted while relaxing -111! The car body 1 exits under control so that there is no excess centrifugal force until the point. After passing through the single curve as described above, the air spring s
/, Air is supplied to P from the car body 1 to return it to the original height before entering the air spring transition curve in preparation for the next curve.

Next, regarding the case of passing through an ironic curve, the transition from the transition curve start point to the circular curve start point and the ironic transition curve start point is the same as the above-mentioned case of a single curve until the circular edge end point.When entering the 0 ironic transition curve, While discharging the air from the other air spring 3', it passes through to the end point of the ironic relaxation curve. At the end point of this ironic transition curve, the height of the air spring 3' is equal to that of the air spring 3'.
It's getting lower. The curve can be passed from the end point of the ironic transition curve to the end point of the circular edge and then the end point of the transition curve using the same control as that for an ordinary curve from the start point of the circular curve to the end point of the circular edge and then the end point of the transition curve.

Other compound curves and all transition curves can be passed through in the same way.

Note that it is also possible to attach a small diameter cylinder to the discharge valve U and move the discharge valve 11 using air or hydraulic pressure.

According to the present invention, the displacement of the air spring can be easily and quickly applied in the forced tilt control of the vehicle body, and the problem of control delay can be largely solved, thereby improving the curve passing performance of the vehicle.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the principle of conventional forced tilting, FIG. 2 is an explanatory diagram showing the principle of forced tilting according to the company's original invention, and FIG. 3 is an explanatory diagram of the air spring portion in the present invention. l...Vehicle body, 2...Accelerometer 3/,
3#...Air spring, 4...Dolly frame,
5...Compensation circuit, 8...Amplifier, 9...
...Discharge device, lO...Top plate, 11...
...m departure, u...beam, audience...coil, 14...permanent magnet 1 figure soot 2 times 3 figures

Claims (1)

[Claims] 1. In a railway vehicle that is forced to tilt with an air spring, the air spring is made higher than the normal height in advance to compensate for the lack of force, and when passing on a curved road, the air from one of the air springs is exhausted, and the air spring is A forced tilting method for a railway vehicle, characterized in that air from the other air spring is exhausted as the vehicle passes.