JPH02293253A - Steering system for radial truck - Google Patents

Abstract

PURPOSE:To control inclination to the longitudinal direction of front and rear wheel shafts in corresponding to the curve radius of a track by operating a hydraulic distributing valve with a controller which stores a function controlling length of a hydraulic cylinder through vehicle speed and curve spot detection at the vehicle side, in advance. CONSTITUTION:Hydraulic cylinders 11, 12 are rotatably attached to an interval between a front truck frame 3 and a rear truck frame 4. When drawing nearer to a curved part of a railroad, an electric signal is commanded to a controller 22 through a circuit 34 by spot detectors 23, 24 at both vehicle and ground sides, and an operating command is issued to a hydraulic distributing valve 20 through a circuits 30-33 from this controller 22. At this time, this operating command is issued to the controller 22 through a circuit 35 from a speed detector 25 too. Then, this hydraulic distributing valve 20 is operated, and oil is fed or returned or from the hydraulic cylinders 11, 12 by way of interconnecting pipes 14-17. Oil control is carried out by selecting and regulating a memory circuit built in the controller 22, thus inclination of axles 1, 2 conformed to the curve of a track is securable.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wheel shaft steering device for a bogie for a railway vehicle.
In particular, the present invention relates to a railway vehicle bogie that is suitable for reducing lateral pressure and noise when traveling on curves.

[Conventional technology]

In the conventional device, as described in Japanese Patent Application Laid-Open No. 157464/1983, a link mechanism is provided between the two-part truck frame. Further, as described in Japanese Patent Publication No. 62-30953, an oil damper was disposed between the two divided bogie frames.

[Problem to be solved by the invention]

The above conventional technology involves tilting the front and rear wheel axles in the front-rear direction, so-called
Steering is performed by a link mechanism, in which the wheels roll on the curve of the track, and steering is performed by the rotation angle of the bogie and the car body. However, there is a gap between the track and the wheel flange, and the link mechanism is composed of many pin joints, so there is a lot of play, making it difficult to tilt the front and rear wheel axles to match the radius of the track curve. There was a problem that it was impossible and the tilt angle was insufficient.

The purpose of the present invention is to detect the position of the track by using a point detector on the vehicle side to detect the inclination of the front and rear wheel axles in the longitudinal direction, and to actively adjust the inclination angle of the front and rear axles to match the radius of the curve of the track by adjusting the length of the hydraulic cylinder. Another object of the present invention is to provide a steering device for a radial truck that effectively exhibits a steering function.

[Means to solve the problem]

The above purpose is to operate the hydraulic distribution valve using a controller that has a function to control the length of the hydraulic cylinder based on the vehicle speed and point detection on the vehicle side, and to control the inclination of the front and rear wheel axles in the longitudinal direction. This is achieved by controlling the curve radius of the trajectory accordingly.

[Effect]

The controller transmits command signals from the vehicle-side point detector and vehicle speed detector, and the point detector stores in advance the amount of oil to change the length of the hydraulic cylinder based on the trajectory curve radius and vehicle speed. Then, operate the hydraulic distribution valve. As a result, the length of each hydraulic cylinder is maintained at an appropriate length commensurate with the curve radius of the track, and the longitudinal axis is tilted in the longitudinal direction, achieving a so-called steering function. [Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4.

Before explaining specific embodiments, an outline of the features of the present invention will first be described. In this invention, since the operating route of a railway vehicle is generally determined, a point detector on the ground side is provided at a curved part of the operating route, and when the point detector on the vehicle side passes, a command is issued. Send the signal to the controller. The installation length of the hydraulic cylinder can be changed by transmitting a command signal to the hydraulic distribution valve to increase or decrease the amount of oil to the hydraulic cylinder.

Figure 1 is a system diagram of an embodiment of the present invention having this feature. In the figure, 22 is a controller that includes a hydraulic distribution valve 2o, a vehicle-side point detector 23, a speed detector 25, first signal circuits 30, 31, 32, 33, and a second signal circuit 3.
4 and a third signal circuit 35. 21 is an oil tank connected to the hydraulic distribution valve 20. 24 is a point detector on the ground side.

The hydraulic distribution valve 20 connects the hydraulic cylinders 11, 12 and the communication pipe 14.
, 15. The hydraulic cylinders 11 and 12 are rotatably supported and installed between the front bogie frame 3 and the rear bogie frame 4. Next, the operation of the railway vehicle bogie of the present invention constructed as described above will be explained. When a curved section of the track is approached, an electric signal is sent from the point detectors 23 and 24 on the vehicle side and the ground side to the second signal circuit 34 and sent to the controller 22. controller 22 immediately
Electric signals from the first signal circuits 30, 31, 32, 33
An operation command is then transmitted to the hydraulic distribution valve 20. At this time, an electric signal from the speed detector 25 is transmitted through the third signal circuit 35 to issue a command to the controller 22.

When the hydraulic distribution valve 20 operates, oil flows through the communication pipes 14, 15, 1.
6.17 to the hydraulic cylinders 11, 12 or returned. Oil can be sent by the action of an actuator built into the hydraulic distribution valve 20 (not shown). In addition, in order to return the oil, the hydraulic distribution valve 20
This is due to the action of a valve built into the unit (not shown). The amount of oil to be sent to or returned from the hydraulic cylinder can be selected in advance by selectively adjusting a memory circuit built into the controller 22 (not shown).

By filling or draining oil from the hydraulic cylinder 11.12, the length of the hydraulic cylinder 11.12 changes. By changing the length of this hydraulic cylinder 1.1.12, the bogie frames 3 and 4 are tilted, and the axles 1 and 2 are attached to the bogie frames 3 and 4 via an axle box support device, and the front It is possible to give the transverse axis 1 and the rear transverse axis 2 an inclination commensurate with the radial center of the orbit.

To complete the series of operations, a point detector 24 on the ground side can also be placed on the exit side of the curved section and commanded by an electrical signal. [Effects of the Invention] According to the present invention, the vehicle driver can smoothly pass curves on the track without any special operations, reduce axle flange wear, and reduce lateral pressure on the track. This reduces maintenance costs, extends maintenance regression, and
Squeak noise between the wheels and the track when passing through a curve can also be reduced.

[Brief explanation of the drawing]

Fig. 1 is a system diagram of an embodiment of the present invention, Fig. 2 is a cross-sectional view of an embodiment, Fig. 3 is a sectional view showing the installation state of the hydraulic cylinder device, and Fig. 4 is a movement of the wheel set on a curve. FIG. 5 is an elevational view of a conventional known example. 1... Front axle, 2... Rear wheel axle, 3... Front bogie frame, 4... Rear bogie frame, 6... Pin joint. 11.1
2... Hydraulic cylinder, 14, 15, 16.17...
Hydraulic communication pipe, 18.19...Link mechanism, 20...
Hydraulic distribution valve, 22...Controller, 23...Vehicle side point detector, 24...Ground side point detector, 25...
Speed detector, 30, 31, 32. 33... first signal circuit, 34... second signal circuit, 35... third signal circuit.

Claims (1)

[Claims] 1. A bogie frame is provided which is divided into two parts in the front and rear, each of the bogie frames has a wheel axle positioned by an axle box support device, and the bogie frame is supported by a pin at the midpoint of the wheel axle. In a railway vehicle bogie that is rotatably coupled, a hydraulic cylinder is arranged between the bogie frames, a first signal circuit that controls a controller and a hydraulic distribution valve, a vehicle point detector and the controller. a second signal circuit for controlling the speed detector of the vehicle and the controller; and a third signal circuit for controlling the speed detector of the vehicle and the controller; and changing the installation length of the hydraulic cylinder and tilting the wheel axle in the longitudinal direction. A steering device for a radial truck, characterized by comprising means.