JPH0113606Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pneumatic tire abnormality detection device for detecting pneumatic tire abnormalities such as a tire blowout in a track vehicle running on a track using pneumatic tires.

Conventionally, as a device for detecting a puncture of a pneumatic tire in the above-mentioned track vehicle, a pressure switch is attached to the pneumatic tire to detect a drop in the tire internal pressure when the tire is punctured, or a device approaches each pneumatic tire on both sides of the axle. A detector is attached to the tire, and a detector is installed on the track side. When a tire is punctured, the detector descends and contacts the detector on the track side, and this detector is activated to detect a tire puncture. There are things etc.

However, with either of these devices, a pressure switch or detector must be installed on each vehicle and on each of its pneumatic tires, which means that a large number of these devices are required. It also lacks sex. Furthermore, the former device has an expensive air pressure switch, which increases equipment costs, and the latter device has the disadvantage that it is easily damaged because the detector and the detector come into direct contact.

This invention was proposed to solve the above-mentioned conventional drawbacks, and it is possible to detect abnormalities in pneumatic tires of rail vehicles with high reliability and at low cost, without the need to provide a detector etc. for each pneumatic tire. It is an object of the present invention to provide a pneumatic tire abnormality detection device that makes it possible to detect abnormalities in pneumatic tires.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a vehicle body, 2 is an axle, and 3 is a pneumatic tire, and the pneumatic tire 3 runs on a track 4. A light receiver 5 using a phototransistor or the like is provided on the floor on both sides of the track 4.
On the other hand, a light emitter 7 is attached to a beam 6 provided higher than the height of the vehicle, and is located directly above the light receiver 5 and emits light onto the light receiver 5.

The positions of the light emitter 7 and the light receiver 5 are such that even if a normal vehicle that is not tilted left or right passes by, the light passage is not interrupted. The roof corner is located so that light is blocked from passing through.

Although not shown, the light receiver 5 is connected to an alarm device such as a buzzer or an indicator lamp,
This alarm device is configured to issue an alarm when the light receiver 5 is cut off from receiving light from the light projector 7, upon receiving a light reception/cutoff signal from the light receiver 5.

When a normal vehicle that is not tilted passes the track on which the pneumatic tire abnormality detection device configured as described above is installed, as shown in FIG. Therefore, the alarm system will not operate. However, when a vehicle passes by that is tilted to one side as shown in Figure 2 due to a puncture in the pneumatic tire 3, the passage of light is interrupted by the corner of the roof of the vehicle on the tilted side, and therefore the light is not received. The device 5 sends a light-receiving signal to the warning device to activate the warning device, and thus a tire puncture is detected.

Note that, since the vehicle tilts not only when a pneumatic tire is punctured but also when an air spring supporting the vehicle body 1 is punctured, air spring abnormality can be detected in the same manner.

Of course, the positions of the light projector 7 and the light receiver 5 may be reversed, that is, the light projector may be provided at the bottom and the light receiver may be provided at the top.

As explained above, the present invention provides a light projector and a light receiver on both sides of the track, so that when a vehicle that is tilted due to a punctured pneumatic tire or a punctured air spring passes, the light is transmitted or interrupted by the vehicle. By installing a detector at a specific location, it is possible to detect abnormalities in all passing vehicles.
Significantly fewer detectors are required and therefore maintenance is significantly easier. In addition, since it is a non-contact type, the reliability of abnormality detection is high, and since no modification is required on the railcar itself, it is easy to apply to conventional railcars.
Furthermore, it has various effects such as being able to detect abnormalities in pneumatic tires regardless of whether the vehicle is running or stopped.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view of the vehicle and the track side portion with normal pneumatic tires, and FIG. 2 is a front view of the vehicle and the track side portion when the tire is punctured. 1... Vehicle body, 3... Pneumatic tires, 4... Track,
5... Light receiver, 7... Emitter.

Claims (1)

[Scope of utility model registration request] In a track vehicle running on a track with pneumatic tires, when a vehicle tilting to the left or right passes a light projector that projects light upward or downward on both sides of the track and a light receiver that receives light from the projector, the vehicle 1. A pneumatic tire abnormality detection device for a track vehicle, wherein the pneumatic tire abnormality detection device is arranged so that the passage of light is cut off by the light receiver, and an alarm is issued when the light reception of the light receiver is cut off.