JP2012056561A - Wheel set center steering gear for railroad vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent noise at curved tracks, to emphasize calm lives of people living along railway lines, and to suppress noise in a subway to the utmost to reduce stress caused by the noise.SOLUTION: A truck is divided in two to connect a pivot 103 to the center thereof. Hydraulic cylinders 101 are installed at the right and left of the pivot 103 in parallel with a truck flame 102, and hydraulic cylinders 101 in the right and left are connected through a flexible hose, so that hydraulic pressure can be constant to have a steering angle. This extremely contributes to a commuter train, that is, a transportation means which human beings mainly use. This can be applied to railway lines having curved tracks in a railway space where buildings are crowded, and in an underground space.

Description

The present invention relates to a steering device for a bogie of a railway vehicle.

Conventional trolleys can smoothly pass through the curved section of the track by rotating the trolley with respect to the vehicle body, but the attack angle between the wheel and the rail (the tangent of the arc of the rail and the traveling direction of the wheel) Angle) was generated, and the wheel flanges and rails were worn, generating noise.
Furthermore, when an electric motor is mounted on a conventional wheel-shaft steering device, the motor is accompanied with the steering direction, which makes designing very difficult. Also, since the return of the axle until the two axles are parallel is flexible, there is a possibility of derailment during travel.

It is well known that if the extension line of the axle plays the center of the curve of the rail, the attack angle becomes zero, and it is possible to easily pass the curved track while suppressing wear of metal parts and generation of noise. The present invention bisects the carriage around the pivot, and connects the left and right sides of the divided carriage with a hydraulic cylinder. When pressure is applied to one hydraulic cylinder, negative pressure is applied to the other hydraulic cylinder, Has a steering angle. Since the carriage is divided into two parts, there is an advantage that it is easy to mount a drive system device such as an electric motor, and maintenance is easy because the structure is simple. The steering angle applies friction and stress from the initial attack angle during driving to apply pressure to one hydraulic cylinder and negative pressure to the other hydraulic cylinder. At the same time, the front and rear axles of the carriage are Can have. The return of the steering angle (both axles are parallel) is the same principle as described above. Therefore, the cart that generates the steering angle can travel on the curved track with a short R without generating noise.

Top view of trolley FIG. 1 shows a top view of the cart with the steering angle in FIG. Side view of trolley Overview of hydraulic circuit diagram 2 represents the steering angle in FIG. This is a state when the axle of the truck is approaching a curved track in the initial stage where the steering angle has a steering angle. Black arrows indicate vector forces.

Japanese Patent Application No. 2006-009732 Wheel Steering Device for Railway Vehicle

It depends on the bogie of all railway vehicles. Equipped with front and rear vehicles with laser sensors that identify the direction of travel, identify the direction of travel of the curved track, and provide a solenoid valve between the hydraulic cylinders in advance to control the hydraulic pressure during travel to provide the steering angle There are also application methods such as. If the traveling speed and steering angle are too large and there is a risk of derailment, this can be prevented by a solenoid valve. In the present application, although the hydraulic pressure in the hydraulic cylinder is constant, a method of predicting a curved trajectory when traveling by installing an actuator, individually controlling the carts of the front and rear vehicles, and forcibly setting the steering angle is also possible. is there.

DESCRIPTION OF SYMBOLS 100 Wheel 101 Hydraulic cylinder 102 Bogie frame 104 Axle 200 Flexible hose 201 Oil 300 Rod 400 Curved track 555 Steering angle

Claims (1)

  A wheel-shaft steering device in which the bogie frame is connected in half with the pivot, the hydraulic cylinders are mounted on the left and right sides of the bogie frame between the bogie frames, and the front and rear axles have a steering angle. .