JP2006151349A - Vehicle derailment prevention method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent derailment of a running railway rolling stock by mounting derailment prevention wheels or derailment prevention feet to a bogie truck of the railway rolling stock. <P>SOLUTION: Even when wheels 2 in one side of the bogie truck are floated up from upper faces of rails 1 during running of the railway rolling stock, the derailment prevention wheels 4 or derailment prevention feet 5 vertically movably supported by a bogie truck frame 3 are pressed against the upper faces of the rails 1 by springs 10 or the deadweight and are rolled or slid. Due to this, flanges 6 can be engaged with inside faces of the rails 1 all the time. Therefore, side slip of the wheels 2 can be prevented, and derailment of the wheels 2 can also be prevented. As a method of pressing the derailment prevention wheels 4 or derailment prevention feet 5 against the upper faces of the rails 1, magnetic force may be used to press the derailment prevention wheels 4 or derailment prevention feet 5 against the the upper faces of the rails 1 and roll or slide them. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  This is especially effective for high-speed vehicles to prevent derailment of railway vehicles.

  Conventional methods for preventing derailment of vehicles have not been carried out except for a method of adding another guide rail inside the track. In particular, no measures are taken for vehicles.

  Even if the wheel on one side of the bogie truck is lifted from the rail surface while the vehicle is running, there is a possibility that the wheel will slip sideways and if it does not deviate from the rail, it will swing back and return to the rail. Therefore, the present invention prevents this lateral shift.

  Even when the wheel 2 on one side of the bogie is lifted from the upper surface of the rail 1 while the vehicle is running, the escape prevention wheel 4 or the escape prevention foot 5 supported by the bogie carriage frame 3 so as to be able to move up and down is provided by the spring 10. Alternatively, by pressing or rolling or sliding on the upper surface of the rail 1 by its own weight, it is possible to keep the hook 6 in mesh with the inner surface of the rail 1 at all times and prevent the vehicle from slipping sideways. It prevents derailment. Further, as a method of pressing the escape prevention wheel 4 or the escape prevention foot 5 against the upper surface of the rail 1, a magnetic force is used instead of the spring 10 or its own weight.

  According to the present invention, if the degree of lifting of the wheel 2 from the rail upper surface is within 10 mm, it is considered that the lateral displacement can be prevented. When the vehicle swings back, it can return to a smooth running.

BEST MODE FOR CARRYING OUT THE INVENTION

1, FIG. 2 and FIG. 3 show an example of the embodiment of the present invention. The escape prevention wheel 4 is installed at the center of the frame 3 of the bogie, that is, between the front and rear wheels. The escape prevention wheel 4 is rotatably supported on the shaft 11 of the peristaltic block 8 by a bearing. The peristaltic block 8 can move up and down lightly in the peristaltic guide groove 7 of the bogie truck frame 3 and is always pushed downward by a spring 10 attached to a spring seat 9 of the bogie truck frame. ing. Therefore, even when the wheel 2 is lifted from the upper surface of the rail 1, the escape prevention wheel 4 is always in contact with the upper surface of the rail 1, and the flange 6 is engaged with the inner surface of the rail 1.
1, 2, and 3 exemplify the vine spring 10 as an example, a leaf spring or an air spring may be used as the action of the spring.
FIG. 4 shows an escape prevention foot 5 attached to the peristaltic block 8 by bolts instead of the escape prevention wheel 4. In this case, the escape prevention foot 5 slides lightly on the upper surface of the rail 1, and its heel 6 is engaged with the inner surface of the rail 1. In this case, in order to reduce the contact friction on the upper surface of the rail, a method of automatic control is adopted in order to slightly pass between the lower surface of the escape prevention foot 5 and the upper surface of the rail 1.
As another example, in FIGS. 5 and 6, the escape prevention wheel 4 is rotatably supported at both ends of the support beam 12 via bearings. A swing shaft 13 is provided in the center portion of the support beam 12 so as to protrude forward and backward, and is held by a box-shaped swing block 8 so as to swing left and right. Therefore, the support beam 12 can be kept horizontal even if the bogie bogie frame 3 is tilted left and right. Further, the box-shaped peristaltic block 8 can freely peristate the peristaltic guide groove 7 provided in the central portion of the bogie bogie frame 3 in the vertical direction. Accordingly, the left and right escape prevention wheels 4 are placed on the upper surfaces of the left and right rails, and are always pressed against the upper surface of the rail 1 by a pair of springs 10 attached to the spring seats 9 of the bogie carriage frame 3. Therefore, even if the vehicle is tilted and the bogie bogie frame 3 is tilted, and the left or right wheel 2 leaves the upper surface of the rail 1, the left and right escape prevention wheels 4 are always on the upper surface of the rail 1, and the rod 6 is always on the inner surface of the rail. Meshing. Next, FIG. 7 shows an example of a method of pressing the escape prevention wheel 4 or the escape prevention foot 5 against the upper surface of the rail 1 by a magnetic force. In this case, when the escape prevention wheel 4 is initially rolling while being placed on the rail 1 by its own weight, the bogie bogie frame 3 is tilted and the wheel 2 is lifted from the rail 1, and a predetermined dimension is set. The escape prevention wheel 4 falls below the same dimension as the bogie bogie frame 3. Then, the peristaltic block 8 kicks and starts the limit switch 18 attached to the frame 3, thereby energizing the electromagnet 15, thereby attracting the magnet core 16 engraved with the rack and rotating the pinion 17. The peristaltic block 8 chopped with the meshing rack 14 is pushed down, and the escape prevention wheel 4 is strongly pressed against the rail 1. In this way, the pressing force due to its own weight can be assisted by the force of the electromagnet 15. Another method is to magnetize the escape prevention wheel 4 and directly attract it to the rail 1.

  In order to provide a guide rail over the entire extension of the track according to the present invention, it is necessary to spend a great deal of money, and instead of taking measures against the track that is impossible at all, it is possible to realize escape prevention at the cost of adding to the bogie. I can do it.

  The longitudinal cross-sectional view which shows the 1st Example of embodiment of this invention   XX sectional view of FIG.   Side view of FIG.   Longitudinal sectional view showing a second embodiment according to the present invention.   Longitudinal sectional view showing a third embodiment according to the present invention.   YY sectional view of FIG.   Longitudinal sectional view showing a fourth embodiment according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rail 2 ... Wheel 3 ... Bogie bogie frame 4 ... Escape prevention wheel 5 ... Escape prevention foot 6 ... Escape prevention・ ・ ・ ・ ・ 7... Guide slide groove for bogie cart frame 8... Block 9. Spring seat for bogie cart frame 10. Axis of peristaltic block 12 ··· Support beam 13 ··· Shaking axis of support beam 14 ··· Rack of peristaltic block 15 · · · Electromagnet 16 ··· Rack Magnet core with engraving 17 ... Pinion 18 ... Limit switch

Claims (2)

  Even when the wheel 2 on one side of the bogie is lifted from the upper surface of the rail 1 while the vehicle is running, the escape prevention wheel 4 or the escape prevention foot 5 supported by the bogie carriage frame 3 so as to be able to move up and down is provided by the spring 10. Alternatively, by pressing or rolling or sliding on the upper surface of the rail 1 by its own weight, it is possible to keep the hook 6 meshed with the inner surface of the rail 1 at all times and prevent the vehicle 2 from slipping sideways. Derailment prevention method.   As a method of pressing the escape prevention wheel 4 or the escape prevention foot 5 against the upper surface of the rail 1 in [Claim 1], a method of pressing or rolling or sliding them against the upper surface of the rail 1 by a magnetic force instead of the spring 10 or its own weight. .

Images