JP2001037003A - Current collecting slider - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a current collecting slider the wearing state of which can be detected easily when the state reaches a limit. SOLUTION: An optical fiber 2 is provided in a current collecting slider 1. When the abrasion of the slider 1 advances, the wearing state of the slider 1 can be detected, because the optical fiber 2 is exposed on the sliding surface of the slider 1 and cut by a trolley wire. Alternatively, the advance of abrasion can be detected in real time, because the length of the optical fiber 2 becomes shorter and the phase of light rays reflected by the end face of the fiber 2 changes. The fiber 2 can be oriented in the horizontal direction or in the thickness direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collector plate for a pantograph for an electric railway vehicle, and more particularly to a current collector plate capable of easily confirming that a wear limit has been reached.

[0002]

2. Description of the Related Art In general, the measurement of wear on a current collecting slide plate of a pantograph for an electric railway vehicle is performed by climbing on a roof of the vehicle and placing a ruler on the slide plate. In recent years, as shown in FIG. 4, a racer or an ultrasonic device is provided in a trolley wire supporting facility for supporting a trolley wire, and a distance between the ground plate and a reference plane is measured to reduce the wear amount of the ground plate. Detection methods have been developed and are being used. Further, as shown in FIG. 5, there has been proposed a method of knowing the replacement time of a slide plate by providing a side groove on a slide plate and wearing the slide plate to eliminate the side groove (see Japanese Patent Application Laid-Open No. 08-107603). ).

[0003]

However, the prior art has the following problems. (1) The method of directly placing a ruler on a ground plate requires a great deal of labor. (2) The method using a laser device or an ultrasonic device requires a reference surface, and in many cases, a place suitable as the reference plane is used for other purposes such as a lubricant installation place. (3) The method of forming the groove on the side surface of the sliding plate has a drawback that it is difficult to confirm due to adhesion of dirt such as abrasion powder and an arc prevention plate attached to the side surface of the sliding plate. (4) In any of the above methods, the measurement is performed while entering the engine section or the train section, so that the wear of the slide plate progresses abnormally fast during running, and the subsequent running becomes dangerous. Cannot detect this. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and has an object to determine whether or not a slide plate has worn down to a wear limit, whether traveling or entering a vehicle. The present invention is to provide a current collector slide plate which can be easily confirmed in the above.

[0004]

Means for achieving the object is to provide a current collector having a current collector in a thickness direction or a wear limit depth position of the current collector. A current collector slide plate, wherein an optical fiber is incorporated in a member, a light source is made incident from one of the optical fibers, and the amount of the light source is detected by the other. In addition,
The current collector slide plate is constituted by a slide plate member.

[0005] Light is passed through an optical fiber built into the wear limit depth of the slide plate, and if the slide plate is worn and the optical fiber is disconnected, light cannot be detected at the light exit side, so that the wear limit has been reached. Detect. Or,
The laser beam is made incident on the optical fiber built in the thickness direction of the slide plate, and as the wear of the slide plate progresses, the optical fiber becomes shorter, and the phase of the light beam reflected on the worn end face of the optical fiber changes, so that the laser device Is used to detect the remaining thickness of the slide in real time.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIGS. 1A and 1B show a first embodiment of the present invention. FIG. 1A is a perspective view, FIG. 1B is a perspective view showing a state in which the wear has been reached to a wear limit, and FIG. It is sectional drawing of the AA line arrow direction in (b). In FIG. 1, 1 is a ground plate, 2 is an optical fiber, 3 is a light beam entrance, 4
Is the ray exit. In this embodiment, since the optical fiber 2 is installed inside the slide plate 1, when the slide plate 1 is worn and the optical fiber 2 is exposed on the sliding surface of the slide plate 1,
When the optical fiber 2 is broken by being rubbed by the trolley wire, it is possible to detect that the wear has progressed.

FIG. 2 is a view showing a second embodiment of the present invention. FIG. 2 (a) is a perspective view, FIG. 2 (b) is a perspective view in a state where it has been worn to a wear limit, and FIG. 2 (c). FIG. 4 is a sectional view taken along line BB in FIG. In FIG. 2, reference numeral 1 denotes a slider, 2 denotes an optical fiber, 3 denotes a light entrance, and 4 denotes a light exit. In the present embodiment, since the optical fiber 2 is installed inside the sliding plate 1 at the wear limit depth of the sliding plate 1, when the sliding plate 1 is worn and the optical fiber 2 is exposed on the sliding surface of the sliding plate 1, When the optical fiber 2 is rubbed by the trolley wire and disconnected, it is possible to detect that the wear has progressed to the wear limit depth.

FIGS. 3A and 3B show a third embodiment of the present invention. FIG. 3A is a perspective view, FIG. 3B is a perspective view showing a state where the wear has been reached to the wear limit, and FIG. FIG. 4 is a cross-sectional view taken along line CC in FIG. In FIG. 3, 1 is a slide plate, 2 is an optical fiber, and 5 is a light beam entrance. In the present embodiment, since the optical fibers 2 are installed inside the slide plate 1 in the thickness direction of the slide plate 1, as the slide plate 1 wears and the length of the optical fiber 2 is shortened, the light entrance 5 The remaining thickness of the slide plate 1 can be detected in real time by changing the phase of the laser beam which passes through the beam entrance and exit and reflects again at the end of the optical fiber 2 and passes through the beam entrance 5 again.

In any of the above embodiments,
The light source and the light receiving device are installed outside the slide plate, for example, on the pantograph body or the vehicle body. In the first and second embodiments, for example, a light bulb, a light emitting diode, or the like can be used as the light source. As the light receiving device, for example, a photoelectric tube or a CCD device can be used. In the third embodiment, since a laser beam is used as a light beam, a laser device is used as a light source and a light receiving device.

[0010]

As described above, according to the present invention, it is possible to grasp in a train whether or not the current collector plate has worn down to the wear limit, thereby saving labor and danger at the time of inspection. Further, the occurrence of abnormal wear and the breakage of the slide plate can be detected during traveling, which is extremely useful in practical use.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a second embodiment of the present invention.

FIG. 3 is an explanatory view showing a third embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional technique.

FIG. 5 is a perspective view showing another conventional technique.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 ground plate 2 optical fiber 3 light entrance 4 light exit 5 light entrance 6 reference plane 7 racer or ultrasonic device 8 trolley wire support device 9 trolley wire 10 side groove

Claims (1)

[Claims] 1. A current collector having a current collector, wherein:
An optical fiber is built in a sliding plate member in the thickness direction or the wear limit depth position of the current collector sliding plate, a light source is made incident from one of the optical fibers, and the other is configured to detect a light source amount. Current collector.