JPH0127976Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a guide device for a track vehicle that is guided by guide walls erected on both sides of a track.

An example of a conventional guide device of this type is shown in FIG. 1, in which 18 is a track and 12 is a track 18.
1 is a vehicle, 2 is a steering wheel, 3 is a king pin, 4 is a knuckle arm, 5 is an axle, 6 is a tie rod, 7 is a connecting rod, 9 is a guide cross beam and a support link 8, 8, it is supported by the axle 5 so that it can move left and right. A guide wheel attachment frame 13 is provided at both ends of the guide cross beam 9 so as to be rotatable around a pin 17, and a guide wheel 10 is attached to this guide wheel attachment frame 13 so as to be rotatable around a shaft 19.

The pressing mechanism 14 rotates the guide wheel mounting frame 13 around the pins 17 at both ends of the guide cross beam 9, and the guide wheel 10
acts to press the guide wall 12 against the guide wall 12.

Therefore, when the vehicle 1 is biased from the center of the track 18, the guide cross beam 9 moves in either the left or right direction relative to the axle 5, and the left and right movement of the guide cross beam 9 is caused by the connecting rod 7, the knuckle arm 4, , the steering wheel 2 is rotated around the king pin 3 via the tie rod 6, and the vehicle 1 is steered back to the center of the traveling track 18.

For this type of vehicle, this running speed is 30km/
Below H, the vehicle can be driven without restoring force, that is, the force that restores the guide crossbeam to a predetermined relative position with respect to the steering wheels, but when the running speed exceeds 30 km/h, the running stability of the vehicle is affected by the restoring force. This will have a big impact.

In the above-mentioned conventional device, the guide cross beam 9 is restored to the neutral position by a pressing mechanism attached to both left and right ends, and this restoring force is generated when the steering wheel 2 reaches its maximum steering angle. In other words, the larger the relative displacement between the guide cross beam and the steering wheel in the left-right direction, the larger the problem.

The purpose of the present invention is to eliminate the problems of the above-mentioned conventional device, and its gist is to provide a steering wheel,
A guide cross beam supported so as to be movable in the left and right directions relative to the steering wheel, and a guide wheel rotatably supported at both left and right ends of the guide cross beam and abutting against guide walls erected on both sides of the track. and an interlocking connection member that transmits the horizontal movement of the guide cross beam to the steering wheel to steer the steering wheel, wherein the guide cross beam is moved relative to the steering wheel in the left and right direction. There is provided a guide device for a track vehicle, characterized in that it is provided with a pneumatic cylinder for restoration and means for adjusting the air pressure within the pneumatic cylinder.

In the present invention, a pneumatic cylinder is provided to restore the relative displacement of the guide cross beam in the left and right direction with respect to the steering wheel, and a means for adjusting the air pressure inside this pneumatic cylinder is provided. When the vehicle is running at a low speed, such as on a straight road, the air pressure in the pneumatic cylinder is reduced to reduce the restoring force, and when the steering angle of the steering wheel is small, i.e. when the vehicle is running at a high speed on a straight road, etc., the air pressure in the pneumatic cylinder is reduced. By increasing the air pressure, it is possible to increase the restoring force and improve the running stability of the vehicle at high speeds.

FIG. 2 shows an example of the guide device according to the present invention, in which guide wheels 10 are rotatably attached to both ends of a guide cross beam 9 by a shaft 19, and the vehicle 1 runs in the center of a track 18. When the guide wheels 10 are in contact with the guide surface of the guide wall 12, they are opposed to each other with a slight gap as shown in the figure. 11
is a restoring device, which is a combination of a pneumatic cylinder and a damper, and is interposed between the guide cross beam 9 and the axle 5. When the axle 5 is supported on the vehicle 1 so that it cannot move laterally, this restoring device 11 is connected to the guide cross beam 9.
and the vehicle 1. 20 indicates means connected to the restoring device 11 and adjusting the air pressure within its pneumatic cylinder. Details of the restoring device 11 are shown in FIG. 3, in which 21 is an outer cylinder, 22 is a diaphragm, 23 is a shaft, 2
4 is a cylinder, 25 is a piston, 27 is a seal rubber,
28 is a seal rubber, 29 is a seal rubber, 30 is a nut, 31 is a caulking metal fitting, 32 is oil, 33 is a throttle, 34 is a support extending from the axle 5, and 35 is air.

If the guide cross beam 9 were to be displaced relative to the axle 5 downward in FIG. It compresses the air within the enclosed pneumatic cylinder and generates a restoring force. At the same time, the piston 25 in the inner cylinder 24 moves downward, and the oil 32 in the lower chamber passes through the throttle 33 and enters the upper chamber of the piston 25.
Buffer the movement of 5. If the guide cross beam 9 is displaced upward relative to the axle 5 in FIG. 3, the outer cylinder 2
1 is not displaced, but the inner cylinder 24 is displaced upward, compressing the air within the pneumatic cylinder and generating a restoring force. The rest of the structure is the same as the conventional one shown in FIG. 1, and corresponding members are designated by the same reference numerals as in FIG. 1, and their explanations will be omitted.

When the vehicle 1 is biased from the center of the track 18 beyond the gap between the guide wheel 10 and the guide wall 12, the guide cross beam 9 moves to either the left or right against the restoring force of the restoring device 11, and depending on the amount of movement. Steering wheels 2 are steered to return vehicle 1 to the center.

Therefore, when the vehicle runs on a curve, the restoring device 11
By reducing the pneumatic pressure of the pneumatic cylinder of the restoring device 11 by adjusting the pneumatic cylinder 20, the restoring force can be reduced and the acting force of the guide wheel 10 can be reduced, and when traveling in a straight line, the pneumatic pressure of the pneumatic cylinder of the restoring device 11 can be increased. As a result, the restoring force can be increased and the running stability of the vehicle can be improved. Also,
By incorporating an oil damper into the restoring device 11 as shown in the figure, vibrations of the guide cross beam 9 can be absorbed and the impact thereof can be alleviated.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing a conventional guide device for a rail vehicle, FIG. 2 is a schematic plan view showing an embodiment of the present invention, and FIG. 3 is a longitudinal sectional view of the restoring device. Trajectory...18, Guide wall...12, Vehicle...1,
Steering wheel...2, Guide crossbeam...9, Guide wheel...1
0. Restoration device...11. Air pressure adjusting means...2
0.

Claims (1)

[Scope of utility model registration request] A steering wheel, a guide cross beam supported to be movable in the left and right directions relative to the steering wheel, and a guide wall rotatably supported at both left and right ends of the guide cross beam and erected on both sides of the track. a guide wheel that abuts on the steering wheel; and an interlocking connection member that transmits the horizontal movement of the guide cross beam to the steering wheel to steer the steering wheel, wherein the guide cross beam is connected to the steering wheel. A guide device for a track vehicle, comprising a pneumatic cylinder for restoring relative displacement in the left and right direction, and means for adjusting the air pressure within the pneumatic cylinder.