JPS6185262A - Car body tilter 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 [Field of Application of the Invention] The present invention relates to a vehicle body tilting device for a railway vehicle, and particularly to a hydraulic actuator for a forced pendulum type vehicle.

[Background of the invention]

An embodiment described in JP-A-58-78858 is shown in FIGS. 4 and 5. FIG. 4 is a cross-sectional view of the vehicle, and FIG. 5 is a plan view of the truck.

The method shown in Figures 4 and 5 is commonly called a "controlled pendulum".
The natural pendulum motion of the vehicle body 1 supported by rollers 5 due to excessive centrifugal force is controlled by an air cylinder 9 using an air servo valve 11, thereby improving the delay in pendulum motion and the riding comfort. Therefore, the force required for the actuator is relatively small, and the actuator is an air cylinder 9 that uses an air compressor conventionally installed in vehicles for braking as its air source.
was used.

By the way, the above air control method has the problem of poor response in high frequency ranges, but the maximum speed is 13
In the range up to about 0 km/h, good riding comfort can be obtained by storing curve conditions in advance, detecting points, and performing predictive control. In addition, in the case of a pneumatic type, the vibrations applied from the bogie frame 6 supported by the wheel axle 8 via the shaft spring 7 are alleviated by the compressibility of the air in the air cylinder 9 and are not directly transmitted to the car body 1. This aids in the vibration isolation performance of the air spring 2 between the pendulum beam 3 provided with the pendulum 4 and the vehicle body 1, and further contributes to improving riding comfort.

12 is a pendulum suppression damper, 13 is a pendulum suppression cylinder, 14
is the stopper rubber.

On the other hand, the air-controlled type uses compressed air of 5 to 8 Kyf/cd, so the output is limited and the response is poor. In this method, which does not expect pendulum motion but uses only the output of the actuator to generate pendulum motion, it is essential to use hydraulic pressure with higher output and better response.

However, if a conventional air cylinder is simply replaced with a hydraulic actuator, pendulum operation is possible, but the vibration damping performance peculiar to the conventional air cylinder is lost, resulting in a problem of poor riding comfort.

[Object of the Invention] An object of the present invention is to provide a vehicle body tilting device that imparts vibration mitigation performance to a hydraulic actuator that has high-speed response and large output, and provides a strong pendulum vehicle with good riding comfort.

[Summary of the invention]

The present invention provides a damping device that limits the stroke to a certain range in both directions in series with a hydraulic actuator, and provides the hydraulic actuator with buffering performance against external disturbances.

[Embodiments of the invention]

An embodiment of the invention is shown in Figure 1 and Figure 2.

FIG. 1 is a plan view of the truck, and FIG. 2 is a sectional view of the hydraulic actuator portion.

The structure of the truck and car body is almost the same as the conventional one, but the present invention uses a hydraulic actuator 15, and since the hydraulic actuator has a large output and a large positioning force, the pendulum movement used conventionally is fixed. The pendulum suppression cylinder 13 and stopper rubber 14 are no longer necessary.

Also, hydraulic actuators! Since the number has a large internal damping force, the pendulum suppressing damper 12 used conventionally is also unnecessary, resulting in a very simplified configuration.

The hydraulic actuator is a cylinder 16. similar to a normal hydraulic cylinder. Piston 17. Seal 18° joint 1
9. It is composed of rods and seals 21 and 22, and expands and contracts to tilt the vehicle body by the action of a hydraulic servo valve (not shown). Further, at the right end of the cylinder 16, a special rubber spring is provided which is formed of a roll rubber field and an outer cylinder that applies precompression to the roll rubber n.

This special rubber spring limits the stroke to a certain range in both directions and has both spring action and damping action.
The rolling and compressing movement of the rolled rubber field serves to absorb vibrations applied from the bogie frame 6 side due to track deviation. δ is a connecting fitting provided on the outer cylinder body.

With this configuration, a much higher pressure is used compared to the case of using a conventional air cylinder or air servo valve. 21°Kff/cll), it is possible to generate a large force even when using cylinders of the same size. In addition, since oil is not as compressible as air, it is less able to follow commands, making it possible to tilt the car body in response to high speeds, providing a good ride, and greatly reducing the number of parts. It is possible.

FIG. 3 shows another embodiment of the invention. This embodiment uses a metal spring and an oil damping device (cylinder 31) instead of the roll rubber used in Fig. 2.

(consisting of a piston hole and aperture blades).
The effect is the same as that of the embodiment shown in FIG. A. 36 is a seal, and 36 is a connecting fitting.

〔Effect of the invention〕

According to the present invention, by using hydraulic pressure, a vehicle body tilting device with high-speed response and high output can be obtained, the actuator can be made smaller, and the riding comfort does not deteriorate (such as a pendulum suppressing cylinder, a pendulum suppressing damper, etc.). This has the effect of simplifying the structure.

[Brief explanation of drawings]

Figure 1 is a plan view of the present invention installed on a truck frame;
The figure is a sectional view of one embodiment of the actuator used in the present invention, FIG. 3 is a sectional view of another embodiment, FIG. 4 is a cross-sectional view of an embodiment of the prior art, and FIG. 185 is a plan view thereof. . ! ...Vehicle body, 2...Air spring, 3...
... Pendulum beam, 4... Roller support, 5...
・Roller, 6...Bogie frame, 7... Axis spring, 8...
...wheel axle, curved hydraulic actuator, 16.
...Cylinder, 17 ...Piston, 19
...Im hand, machining...Rod, n...Roll rubber, Sae...Outer cylinder, 31...Cylinder, O...Metal Spring, a, tap, bisto 1 diagram pa 2---1 adjustment spring 3-11 handful j beam 6---1 unit ψ cup 5-111 oil pressure 77 arrow a-ta 23=-04 go Z 24--L cylinder 33--metal l!゛Nesai 2 zu 1000 4 zu

Claims (1)

[Claims] 1. In a vehicle body tilting device that supports the vehicle body via a pendulum device, the working fluid of the actuator that controls the amount of vehicle body tilt is an incompressible fluid, and the servo controls the flow rate of the fluid to control the vehicle body tilting operation. A car body tilting device for a railway vehicle, characterized in that a valve is provided, and a mechanism is provided in series with the actuator to limit the stroke to a fixed range in both directions, and has a spring action and a damping action.