JP2005104466A - Rolling stock and wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling stock and a wheel which are effective in preventing derailing or turning over of the rolling stock in spite of a simple configuration, even if an external force is applied thereto. <P>SOLUTION: The wheel 10 provided on the opposite end sides of an axle 24 is constituted of main bodies 12 rotating on rails 32, first flange parts 14 provided inside of the main bodies 12 and second flange parts 16 provided inside of the first flange parts 14. The first flange parts 14 protrude in the diameter direction further than the main bodies, preventing the derailing or rolling of a car body 20 by the engagement with the rails 32 during normal travelling. The second flange parts 16 protrude in the diameter direction still further than the first flange parts 14. Thus, even when a big external force such as an earthquake or the like is applied to force the first flange parts 14 to override the rails 32, the second flange parts 16 are engaged with the rail 32 to prevent derailing, thereby the derailing and turning over of the the car body 20 is prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a railway vehicle and wheels that travel along a pair of rails, and more specifically to prevention of derailment of the vehicle.

  A railway vehicle travels along a pair of rails and normally has a structure as shown in FIG. 3, for example. According to FIG. 3, the wheels 100 are provided on both end sides of an axle 112 that is rotatably held by a bearing 110 below the vehicle body 108. The wheel 100 includes a main body 102 that rotates on a pair of rails 116 laid on a track 114, and a flange portion 104 provided on an inner end face of the main body 102. Note that the inside here refers to a portion sandwiched between the pair of rails 116. The flange portion 104 protrudes in the radial direction of the wheel 100 and engages with the rail 116 from the inside to prevent the vehicle body 108 from derailing or shaking in the horizontal direction during traveling. . In the case of such a wheel configuration, there is no problem during normal driving. However, when a large external force is applied in the vertical direction in addition to the horizontal force due to an earthquake, for example, as shown in FIG. As shown in FIG. 3 (C), the flange portion 104 may completely disengage from the rail 116 and may be removed from the wheel. When the wheel is removed, the vehicle body 108 can be displaced in the horizontal direction by the distance between the two wheels 100, so that a large impact is given to the vehicle body 108. In addition, there is a risk of a major accident that the vehicle body 108 rolls over.

Japanese Patent Application Laid-Open No. H10-228667 discloses a device that forcibly guides a vehicle to travel on a roadbed, roadbed, slab, or the like that has a track sway even if a vehicle traveling on a track (rail) derails. A device for preventing overturning at the time of vehicle derailment that prevents the vehicle from falling over by installing on the side is disclosed. According to Patent Document 1, the vehicle is allowed to travel on the vehicle side while contacting the track only when the vehicle is derailed and restraining the vehicle from being displaced more than a certain distance in the vehicle width direction from the track. An allowable stopper device is provided.
Japanese Patent Laid-Open No. 10-250576 (see FIGS. 2 and 5)

  However, the background art shown in Patent Document 1 described above does not prevent derailment itself. Further, the stopper device includes a stopper piece having a length that contacts the side surface of the track (rail) when the vehicle is derailed, and the vehicle is prevented from overturning by contacting the stopper piece with the side surface of the track. However, as described above, when a large external force is applied in the vertical direction, the stopper piece may get over the track, so it is difficult to completely prevent displacement and rollover after derailment.

  The present invention pays attention to the above points, and the purpose thereof is a railway vehicle effective in preventing derailment and rollover of a vehicle even when a large external force is applied even though the object is simple. Is to provide wheels.

  In order to achieve the above object, the present invention is a wheel of a railway vehicle that travels along a pair of rails, and is provided on a wheel body that rotates on the rail, an end surface of the wheel body, or an outer peripheral edge thereof. A first flange portion projecting in a radial direction from the peripheral surface of the wheel main body and engageable with the rails from the inside of the pair of rails, and an outer peripheral edge thereof on an inner end surface of the first flange portion And a second flange portion provided so as to protrude more radially.

  One of the main forms is characterized in that the second flange portion is substantially annular or substantially disk-shaped. In another embodiment, the wheel body, the first flange portion, and the second flange portion are integrally formed. The railway vehicle according to the present invention includes any one of the above wheels. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  The present invention provides a wheel of a railway vehicle that travels along a pair of rails on a wheel main body that rotates on the rail, an end surface of the wheel main body, or an outer peripheral edge thereof, and more than a peripheral surface of the wheel main body. Projecting in the radial direction, the first flange portion engageable with the rails from the inside of the pair of rails, and the inner end surface of the first flange portion projecting in the radial direction from the outer peripheral edge thereof The second flange portion provided is configured. For this reason, even when a large external force is applied in the horizontal direction or the vertical direction, it is possible to prevent the vehicle from being easily derailed or overturned.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  First, Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2A. FIG. 1 is a main cross-sectional view showing the present embodiment, and FIG. 2A is a side view and a cross-sectional view showing the wheel structure of the present embodiment. The wheels 10 of the railway vehicle are provided on both ends of an axle 24 that is rotatably held by a pair of bearings 22 below the vehicle body 20. In addition, a known brake device (not shown) and the like are provided at appropriate positions below the vehicle body 20. The wheel 10 includes a main body 12 that rotates on a pair of rails 32 laid on a rail 30, a first flange portion 14 provided on an inner end surface of the main body 12, and an inner side of the first flange portion 14. The second flange portion 16 is provided. In addition, the inside here means the part pinched by the pair of rails 32.

  The first flange portion 14 is set so as to be larger than the diameter of the main body 12, and a portion protruding from the peripheral edge of the main body 12 engages with the rail 32, thereby causing the vehicle body 20 during traveling to move. Prevents derailment and rolling. The second flange portion 16 has a substantially disk shape and protrudes in a radial direction further than the first flange portion 14, and forms a step with the first flange portion 14. ing. In this embodiment, the main body 12 and the first flange portion 14 are integrally formed, and the second flange portion 16 is fixed to the integral body by appropriate means.

  Next, the operation of this embodiment will be described. During normal traveling, as shown in FIG. 1A, the main body 12 of the wheel 10 is rotating on the rail 32, and the step portion between the main body 12 and the first flange portion 14 is the rail 32. The vehicle body 20 is prevented from derailing or rolling. Here, for example, when an external force is applied not only in the horizontal direction but also in the vertical direction due to an earthquake or the like, one of the wheels 10 rides on the rail 32. According to the background art described above, the wheel 10 that has ridden is derailed to the outside of the rail 32 when an external force in the horizontal direction is further applied. On the other hand, in the wheel 10 of this embodiment, when the first flange portion 14 rides on the rail 32, the second flange portion 16 engages with the rail 32 as shown in FIG. Therefore, it is possible to prevent derailment and rollover without easily derailing from the rail 32.

  As described above, according to the present embodiment, the second flange portion 16 that protrudes in the radial direction from the first flange portion 14 is provided inside the first flange portion 14 of the wheel 10. Even when a vertical external force is applied in addition to the horizontal direction, it is possible to prevent the second flange portion 16 and the rail 32 from easily derailing or overturning due to the engagement between the second flange portion 16 and the rail 32. There is.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The shape and size of the above-described embodiment is an example, and may be changed as appropriate to achieve the same effect. For example, in the above-described embodiment, a substantially disk-shaped member is used as the second flange portion 16, but a substantially annular second flange portion 16A is used as in the wheel 10A shown in FIG. You may make it utilize.
(2) The material shown in the above embodiment is also an example, and may be formed using various known materials.
(3) In the above-described embodiment, only the main body 12 and the first flange portion 14 are integrally formed, and the second flange portion 16 is attached by appropriate means, but this is also an example, and FIG. ), The main body 12, the first flange portion 14, and the second flange portion 16B may be integrally formed.
(4) The wheel of the present invention can be applied as a wheel of various known railway vehicles as long as it travels on a pair of rails such as a vehicle for freight transportation as well as a passenger transportation vehicle.

  According to this invention, the 2nd flange part which protruded in the radial direction rather than the said 1st flange part is provided in the inner side of the wheel provided with the 1st flange part which can be engaged with the rail of a track | truck from the inside. When the first flange portion rides on the rail, the second flange portion and the rail engage with each other to prevent the wheel from being removed, which is suitable for use in a wheel of a railway vehicle. . In particular, it is suitable for the use of wheels such as a Shinkansen that travels at high speed.

It is principal sectional drawing which shows Example 1 of this invention. It is the side view and sectional drawing which show the wheel structure of this invention. It is a figure which shows an example of background art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10A, 10B: Wheel 12: Main body 14: 1st flange part 16, 16A, 16B: 2nd flange part 20: Car body 22: Bearing 24: Axle 30: Track 32: Rail 100: Wheel 102: Main body 104 : Flange part 108: Car body 110: Bearing 112: Axle 114: Track 116: Rail

Claims (4)

A wheel of a railway vehicle that travels along a pair of rails,
A wheel body rotating on the rail,
A first flange portion that is provided on an end surface of the wheel main body or an outer peripheral edge thereof, protrudes in a radial direction from the peripheral surface of the wheel main body, and is engageable with the rails from the inside of the pair of rails;
A second flange portion provided on the inner end face of the first flange portion so as to protrude in a radial direction from the outer peripheral edge thereof;
A wheel of a railway vehicle characterized by comprising:   The wheel of a railway vehicle according to claim 1, wherein the second flange portion has a substantially annular shape or a substantially disk shape.   The wheel of a railway vehicle according to claim 1 or 2, wherein the wheel body, the first flange portion, and the second flange portion are integrally formed. A railway vehicle comprising the wheel according to any one of claims 1 to 3.

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