JPH08128813A - Apparatus for detecting wear of trolley wire - Google Patents

Abstract

PURPOSE: To obtain a detection apparatus by which wear can be detected simply, in a short time and precisely by a method wherein a light source and a photodetection element arranged in an arm for a detector body so as to sandwich a trollery wire and the detector body is moved at a prescribed speed so as to detect the trolley wire. CONSTITUTION: A detector body 1 is run at a prescribed speed along a trolley wire 4. At this time, a light source 72 and a photodetection element 73 which are attached to the body 1 via an arm 71 are set to a state that they face each other so as to sandwich the trolley wire 4, and the element 73 detects image data on the trolley wire 4. The data is analyzed by an analytical device, and the wear position and the wear degree of the trolley wire 4 are detected. In addition, the light source 72 and the element 73 are arc-moved integrally around the trolley wire 4 by means of a second driving mechanism 83 at a support part 74, and a wear which clusters obliquely on the trolley wire 4 can be measured precisely. In addition, a slide stand 82 is moved by a required amount to the width direction of the body 1 by means of a first driving mechanism 81, and the wear can be detected precisely while the distance between the optical center of a lens 75 and the trolley wire 4 is kept always constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for detecting local wear of a trolley wire installed on an electric power line.

[0002]

2. Description of the Related Art The weight of ears attached to a trolley wire is concentrated at feeder branch points, connection points, curved metal fittings points, etc. in electric power lines, and the trolley wire is stored in a state wound around a drum. Distortion remains in the trolley wire stretched for transportation and construction.

Therefore, the trolley wire does not wear uniformly, and local wear occurs.

If local wear of the trolley wire occurs, electrical contact between the trolley wire and the pantograph becomes unstable, which hinders current collection.

Therefore, detection of local wear of the trolley wire requires early detection together with distortion of the trolley wire.

[0006]

However, the conventional means for detecting local wear has been visual observation and contact-type measurement with a micrometer.

Therefore, the detection work requires a great deal of labor and time, and is particularly difficult because it is a work at a high place which is performed at night when the vehicle travels little.

Further, it is difficult to detect the local wear because the stretched trolley wire is distorted in the vertical and horizontal directions and is unevenly worn, for example, in a curved section.

The present invention is to provide a detection device which, unlike the conventional wear detection, can detect the local wear of the trolley wire very easily and accurately in a single time.

[0010]

In order to solve the above-mentioned problems, a trolley wire wear detecting device of the present invention is arranged such that a detector main body that can move at a constant speed along a trolley wire and a trolley wire are opposite to each other. Then, it is characterized by comprising a light source and a light detecting element arranged in the detector body, and an analyzing device for analyzing data from the light detecting element.

Further, in the above construction, the light source and the light detecting element are attached to an arm provided in the detector body, and the detector is in a state in which the arm can move in an arc around the axis of the trolley wire. It is preferable that the detector is provided in the main body, and further, the arm is provided in the detector main body in such a manner that the arm can move integrally in parallel with the trolley.

[0012]

The light detecting device is moved along the trolley wire at a predetermined speed while the light source mounted on the arm of the detector body and the light detecting element are arranged to face each other with the trolley wire in between. The height in the vertical direction in the data of the silhouette image of the trolley wire sensed by is continuously obtained, and the wear point and the wear degree of the trolley wire are detected.

Further, the light source and the light detecting element are integrally moved in an arc around the axis of the trolley wire to cope with uneven wear of the trolley wire.

Further, the light source and the light detecting element are integrally moved in the horizontal direction with respect to the trolley wire to cope with the distortion of the trolley wire in the horizontal direction.

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings.

The drawings show an embodiment of the present invention, in which a detector main body 1 movable along a trolley wire at a constant speed is shown.
Is formed in a box shape having a total length of about 100 cm, for example, and the arm portions 21 of a plurality of suspension arms project from the upper plate 11 thereof.

In the present embodiment, the two suspension arms 2 are opposed to each other by slightly shifting in the width direction of the traveling apparatus main body 1 in the entire length direction to form a suspension unit. These five suspension units 2A, 2B, 2C, 2D and 2E are arranged at a predetermined distance along the length direction.

More specifically, each suspension arm 2 has its base end mounted on a mount 13 arranged on the inner surface of the base plate 12 which is the bottom plate of the traveling device body 1 in the longitudinal direction of the traveling device body 1. It is rotatably attached to a shaft extending through a rotary cam 14.

The tip of the arm portion 21 of each suspension arm 2 is bent inwardly at a substantially right angle to form a hook shape.
A locking roller 22 having a flange 24 bulged at the inner end is arranged at the tip.

In particular, in this embodiment, a pair of left and right suspension arms 2,
2 are opposed to each other to form a suspension unit, and the suspension rollers 2, 2 of the suspension arms 2 and 2 constituting these suspension units,
22 are arranged so as to be displaced in the traveling direction so as not to contact each other.

Further, in each suspension arm 2, when the locking roller 22 is at the uppermost position, the locking rollers 22 and 22 facing each other are placed and engaged on the upper portion of the trolley wire 4 and the collars 24 and 24. By sandwiching from both sides, deviation is surely prevented.

Further, the suspension arms 2, which form a suspension unit.
2 are configured to have the same opening position by the link members 23, 23 connected at their central portions.

Furthermore, when each suspension arm 2 approaches the uppermost position of the locking roller 22 as shown in FIGS. 4 to 7, the suspension cam 2 is rotated through the electric motor 31 and the speed reducer 32 simultaneously with the rotation cam mechanism 14 and rotation. A rotating mechanism 3 is arranged to move up and down by a predetermined distance.

Therefore, the suspension arm 2 is rotated and the locking roller 2 is rotated.
When 2 reaches above the trolley wire 4, the lower end surface of the locking roller 22 always moves above the upper surface of the trolley wire 4 by a predetermined distance and moves to a predetermined locking position. Locking roller 22 even if it is distorted and not horizontal
Can be securely locked without hitting the trolley wire 4.

Further, each locking roller 22 arranged on these suspension arms 2 is constituted so that the driving force of the electric motor 17 is driven by the driving mechanism 18, 18 composed of an endless belt, as shown in FIG. The detection device main body 1 is self-propelled while being suspended from the trolley wire 4.

At this time, in the present embodiment, the weight of the traveling device main body 1 and the battery 9 is added to each locking roller 22, and the friction between each locking roller 22 and the trolley wire 4 increases, so each locking roller 22 increases. The roller 22 reliably travels without spinning.

Further, the upper plate 11 of the detector body 1 is provided with a detection device 6 for detecting the suspension arm 21 when it approaches an obstacle 5 such as a trolley wire support such as a hanger.

The detection device 6 may be provided for each suspension arm 2, but the suspension arms 2 arranged in the length direction of the detector body 1 are arranged at equal intervals and are arranged at the head. The detection signal from the detection device 6 and the encoder 61, which is arranged so as to project from the upper plate 11 of the detector main body 1, are brought into contact with the lower portion of the trolley wire 4 to measure and detect the traveling speed. Rotate the suspension arm 2 in sequence to move each locking roller 22.
Since it is possible to pass the obstacle through the trolley wire 4 and the locking of the trolley wire 4 sequentially, it is sufficient to provide one at the beginning.

Further, in the present embodiment, fall prevention hooks 62, 62 are provided at the front end and the rear end of the traveling device main body 1 to close and enclose the trolley wire 4 when dropped.

The trolley wire 4 is attached to the detector body 1.
A wear device body 7 for detecting the wear of the wear device is arranged. The wear detecting device body 7 is mainly composed of the detector body 1.
A pair of arms 71, 71 extending in the width direction of the light source 72 and a light detecting element 73, respectively
A support mechanism 8 that supports the arms 71, 71 on the detector body 1 and movably supports the arms 71, 71.

In particular, in this embodiment, the arms 71, 71 are in the shape of a semi-circular ring in which the central support portion 74 is open upward, and the light source 72 and the light detecting element 7 attached to both free ends respectively.
3 and 3 are arranged to face each other with the trolley wire 4 interposed therebetween.

The light source 72 needs to be able to clearly capture the silhouette image of the trolley wire 4 in the light detection device 73, and is formed by arranging a plurality of monochromatic light bulbs in the vertical direction, for example.

Further, as the light detecting element 73, for example, one in which 512 elements having a size of 25 * 25μ are arranged in a line, that is, an effective total length is 12.8 mm is used.

Then, the image of the trolley wire 4 is optically formed on the surface of the light detecting element 73 using the lens 75, and at this time, the enlargement ratio is set at the same time.

Therefore, if, for example, 50 μ is optically given in an actual size per one element of the light detecting element 73, the measuring range is 5
It becomes 25.6 mm with 0μ * 512 elements.

Further, the support mechanism 8 for supporting the arms 71, 71 to which the light source 72 and the light detecting element 73 are attached is mounted on the slide base 82 which is driven in the width direction of the detector body 1 by the first drive mechanism 81. While being supported, the second drive mechanism 83 is configured to move in an arc around the support portion 74.

In the present embodiment, as shown in FIG. 4, each suspension arm 2 is set to the uppermost position, and each locking roller 22 is placed and locked on the trolley wire 4 to suspend the detector main body 1, Then, a driving force is applied to each locking roller 22 by a remote control signal from the ground to cause the detector body 1 to travel at a predetermined speed along the trolley wire 4 at a predetermined speed.

At this time, the arms 71, 7 are attached to the detector body 1.
1. Light source 72 and light detecting element 73 mounted via 1
And are in a state of facing each other with the trolley wire 4 interposed therebetween, and the image data obtained by the light detecting element 73 is built in the detector main body or is transmitted on a wired or wireless basis and is placed on the analysis device (not shown). The wear position and the wear degree of the trolley wire are detected by the analysis using (1).

Specifically, the wear data is obtained by measuring from the upper end to the lower end of the silhouette image data of the trolley wire 4 as shown in FIG. 10, and is obtained from each one of the light detecting elements 73. By sequentially outputting the video data by sending in a clock pulse for reading, the position can be accurately determined by measuring the clock pulse as to which element is bright or dark.

Further, if there are obstacles such as feed ears, the obstacles will be captured in the image data, but these obstacles do not protrude beyond the lower end of the trolley wire 4.

Therefore, the data of the upper end just before the obstacle is hit is held in the memory provided in the analyzer, for example, until the passage is completed, and the wear data may be detected from the detected lower end data. .

Further, the wear of the trolley wire is not always horizontal, and there is a case where the trolley wire is worn biasedly in a curved portion. In this case, the optical axis of the light source 72 is parallel to the wear surface of the trolley wire 4. Therefore, it is difficult to accurately detect the degree of wear by the above-mentioned means.

Therefore, the light source 72 and the light detecting element 73 are integrally moved in an arc around the trolley wire 4 by the second drive mechanism 82 in the supporting portion 74 which is substantially the center of the arms 71, 71. By making the optical axis of the light source 72 parallel to the wear surface of the trolley wire 4, wear can be accurately measured.

In particular, when the image section of the silhouette of the trolley wire is minimized, the optical axis of the light source 72 becomes parallel to the worn surface of the trolley wire 4.

Accordingly, the image data of the trolley wire 4 is processed by the control circuit provided in the analysis device so as to follow the minimum value, and the control voltage is applied to the drive motor 84 constituting the second drive mechanism 83, whereby the detector is detected. During the traveling of the main body, the optical axis of the light source 72 is always parallel to the wear surface of the trolley wire to perform accurate measurement.

Further, in order for the detecting means to accurately form the silhouette image of the trolley wire 4 on the photo-detecting element, the distance between the optical center of the lens 75 and the trolley wire 4 must be kept constant. The line 4 may be stretched with distortion in the horizontal and vertical directions, which makes accurate measurement difficult.

Therefore, in this embodiment, the slide base 2 is moved in the width direction of the detector main body 1 by the first drive mechanism of the support mechanism 8 for supporting the arms 71, 71 so that the optical center of the lens 75 is formed. Accurate wear detection is performed by keeping the distance from the trolley wire 4 constant at all times.

In particular, in the control circuit provided with the video data of the trolley wire 4 in the analysis device, the control voltage is applied to the motor 85 constituting the first drive mechanism 81 so that the harmonic portion of the waveform of the video data is maximized. By providing the above, the distance between the optical center of the lens 75 and the trolley wire 4 is always kept constant while the detector main body is running, and accurate detection can be performed.

According to the present embodiment as described above, the wear point and the wear degree of the trolley wire 4 can be detected very easily, continuously and accurately.

In particular, in the present embodiment, since the detector body 1 is of the self-propelled type, the wear of the trolley wire 4 can be easily and continuously detected. It goes without saying that it does not have to be self-propelled, such as the method of mounting on a car or the like.

[0051]

According to the present invention having the above-described structure, it is possible to detect the worn portion and the degree of wear of the trolley wire extremely easily and surely by a simple work of moving the detector body along the trolley wire. Is something that can be done.

Therefore, in particular, by making the detector main body self-propelled, a special inspection vehicle or the like is not required, and detection can be performed more easily.

Further, when the arm attached with the light detecting element and the light source is circularly moved about the axis of the trolley wire, the measurement is performed accurately even when the trolley wire is unevenly worn such as a curved portion. It is possible to detect the degree of wear.

Further, by making the arm having the light source and the light detecting element attached thereto movable in the width direction of the detector body, accurate wear detection can be performed even in the portion where the trolley wire is distorted in the horizontal direction. Is.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a position embodiment of the present invention.

FIG. 2 is an enlarged partial view of a cross section taken along line XX of the embodiment shown in FIG.

FIG. 3 is an enlarged partial view of a cross section taken along line Y ₁ -Y _{1 of the} embodiment shown in FIG.

FIG. 4 is an enlarged view of a cross section taken along line Z ₁ -Z _{1 of the} embodiment shown in FIG.

5 is an enlarged view of a cross section taken along line Z ₁ -Z _{1 of} FIG. 1 showing a different state of FIG.

6 is an enlarged view of a cross section taken along line Z ₁ -Z _{1 of} FIG. 1 showing a different state of FIG.

7 is an enlarged view of a cross section taken along line Z ₁ -Z _{1 of} FIG. 1 showing a different state of FIG.

FIG. 8 is a partial view in a cross section taken along line Y ₂ -Y ₂ of FIG.

9 is an enlarged view of a cross section taken along line Z ₂ -Z _{2 of the} embodiment shown in FIG.

FIG. 10 is an output diagram showing an example of video data.

[Explanation of symbols]

 1 Detector Main Body 4 Trolley Wire 71 Arm 72 Light Source 73 Light Detection Element

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Akinori Ashi, 3-4 Omorikita, Ota-ku, Tokyo Inside Suganuma Manufacturing Co., Ltd. (72) Shoji Azumi 1-3-9 Kameguro, Meguro-ku, Tokyo No. Electronic Sokki Co., Ltd. (72) Inventor Harumi Horiuchi 2-20-20 Shimomeguro, Meguro-ku, Tokyo Within Kent Electronic Design Co., Ltd.

Claims (3)

[Claims] 1. A detector main body that can move at a constant speed along a trolley wire, a light source and a photodetector element that are arranged in the detector main body so as to face each other with the trolley wire in between, and the photodetector element. The wear detecting device for a trolley wire, comprising: 2. A light source and a light detecting element are attached to an arm provided in a detector main body, and the arm is provided in the detector main body in a state of being capable of circular arc movement about the axis of the trolley wire. The trolley wire wear detection device according to claim 1. 3. A light source and a light detecting element are attached to an arm provided on a detection body, and the arm is provided on the detector body in a state of being movable parallel to a trolley wire. The wear detecting device for a trolley wire according to claim 1 or 2.