JPH0569760A - Roller type trolley wire wear measuring device - Google Patents

Abstract

PURPOSE:To measure a wear amount during traveling all day by providing a detecting part which consists of a detector for detecting the rise amount of a measuring roller to output the detected signal, and a computation processing part which is placed on a railroad maintenance working vehicle and processed the detected signal to calculate the remaining diameter of the trolley wire. CONSTITUTION:A measuring roller which is provided at the middle of two guide rollers 32a, 32b comes into contact with the peripheral surface of a trolley wire 1, so the measuring roller is raised by a height corresponding to the wear amount of the peripheral surface to the guide rollers which come into contact with the particular positions of both side surfaces. The rise amount is detected by a detector while a railroad maintenance working vehicle 4 is traveling, the detected signal is processed by a computation processing part 5 to measure the remaining diameter of the trolley line continuously. Next, for the measurement of the trolley wire where high voltage is applied, a supporting mechanism 6 and the detecting part is high-voltage insulated from the railroad maintenance working vehicle, and the detecting part and the computation processing part are connected with a cable by means of high votage insulation, so it is possible to prevent high voltage from being applied to the supporting mechanism and the computation processing part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller-type wear measuring device for an aerial trolley wire, and more particularly to a contact-type wear measuring device for measuring the remaining diameter of a trolley wire by contact of rollers.

[0002]

2. Description of the Related Art FIG. 4 shows an outline of an erection structure of an overhead trolley wire (hereinafter simply referred to as a trolley wire) 1. In FIG. 4 (a), a messenger wire 12 is stretched between supporting poles 11 and The trolley wire 1 is laid horizontally using the hanger 13. The height of the trolley line 1 changes depending on the state of the line, and also changes vertically and horizontally due to train operation. While the pantograph 21 provided in the electric vehicle 2 follows the vertical fluctuation, the sliding plate 211 slides into contact with the lower surface (referred to as sliding surface or sliding surface) of the trolley wire to receive electric power, and the vehicle is driven. It This sliding contact causes the sliding surface to gradually wear. However, the sliding plate 211 on the pantograph side also wears in the same way, but in order to avoid intensive wear of the same part,
As shown in (b), the trolley wire is installed so as to be displaced alternately in the left-right direction at right angles to the line, and the displacement width H is, for example, 700 mm.
It is said that. Next, (c) shows the cross section of the trolley wire 1,
Two grooves 1a for the hanger 13 are provided in a circle having a diameter φ. Due to the above wear, the width W of the sliding surface 1b gradually increases and the remaining diameter D changes. When the wear progresses and the residual diameter D reaches the use limit, the strength becomes weak and there is a risk of cutting. Therefore, the residual diameter D is measured and managed in a timely manner, and when the limit is reached, the trolley wire is replaced.

Initially, the remaining diameter D was measured manually by using a micrometer, but this work requires several persons including a measuring person and an observer for approaching a train. In addition, working at heights with a trolley wire several meters high is inefficient and dangerous. In order to improve such work, various optical measuring devices mounted on a measuring vehicle and measuring wear during running have been developed, but these are targeted for main line sections including Shinkansen, It is equipped with a dedicated inspection vehicle and measures while traveling at almost the same high speed as a commercial train. Both are large-scale devices and are quite expensive. Since the above-mentioned various measuring devices are of an optical type, they are of a so-called non-contact type with respect to the trolley wire, and the measurement can be performed regardless of whether or not a high voltage is applied to the trolley wire. ..

[0004]

The electrified line has a quiet line section and a side line, and it is necessary to measure the wear of the trolley wire. For these, the manual measurement as described above is still performed. This is the current situation. However, in this case, high speed is not always required, and it is required to be mounted on a simple track maintenance work vehicle and run at an appropriate low speed, and a simple wear measurement device that can measure both day and night saves labor and measures for security. Is required to do. Next, the trolley wire is pressurized with high voltage during train operation, and there is a power outage at night when the operation is stopped or during maintenance work. is necessary. The present invention has been made in view of the above, and is mounted on a track maintenance work vehicle to run at an appropriate low speed, and a necessary insulation measure is applied to a pressurized trolley wire, and wear measurement can be performed both day and night. It is an object of the present invention to provide a possible small and lightweight measuring device.

[0005]

The present invention is a roller type trolley wire wear measuring apparatus which achieves the above object,
A support mechanism provided on a track maintenance work vehicle that can move up and down and rotate in the horizontal direction and has a movable arm that is biased upwards; It is provided in the middle of the follower base having two guide rollers that come into contact with each other and follow the vertical movement and the deviation in the left-right direction, and it is provided between the two guide rollers on the follower base and comes into contact with the sliding surface of the trolley wire, It is mounted on a track maintenance work vehicle and a detector that consists of a measuring roller that rises according to the amount of wear on the sliding surface based on the height position of the guide roller, and a detector that detects the amount of rise of the measuring roller and outputs a detection signal. A processing unit for processing the detection signal to calculate the remaining diameter of the trolley wire,
The residual diameter is continuously measured while the track maintenance vehicle is running. In the above description, the support mechanism and the detection unit are insulated from the track maintenance work vehicle by high voltage in response to the high voltage applied to the trolley wire, and the detection unit and the arithmetic processing unit are cable-connected by a high voltage insulation system.

[0006]

In the above wear measuring apparatus, since the movable arm of the support mechanism provided on the track maintenance work vehicle can move up and down and rotate in the horizontal direction and is biased upward, it is attached to the tip thereof. The two guide rollers of the following base contact the fixed positions on both side surfaces of the trolley wire by the urging force, and follow the vertical movement and lateral deviation of the trolley wire at a certain low speed or lower. On the other hand, the measuring roller provided in the middle of the two guide rollers contacts the sliding surface of the trolley wire. Raise by a comparable height. While the track maintenance work vehicle is running, the amount of this rise is detected by the detector, and the detection signal is processed by the arithmetic processing unit to continuously measure the remaining diameter of the trolley wire. Next, for the measurement of the pressurized trolley wire, the support mechanism and the detection unit are high-voltage insulated from the track maintenance work vehicle, and the detection unit and the arithmetic processing unit are cable-connected by a high-voltage insulation method. Therefore, a high voltage is prevented from being applied to the support mechanism and the arithmetic processing section, and there is no risk of causing a hazard to a measurer or the like.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the present invention (a)
Is a perspective external view of the detection unit, (b) is an explanatory view of the principle of wear measurement of the trolley wire, and FIG. 2 is an overall configuration diagram of the wear measurement device.
In the detection unit 3 of FIG. 1 (a), two guide rollers 32a, 32b that contact the follower base 31 at fixed positions on both side surfaces of the trolley wire 1 are arranged at appropriate intervals, and the two guide rollers are arranged in the middle. Measuring roller that contacts the sliding surface of the trolley wire
33 will be provided. Fixing the central axis 331 of the measuring roller 34
The measuring roller is urged upward by a spring 35 while being pivotally supported. The tip of the central shaft 331 is coupled to the detector 37 via the coupling arm 36. As the detector 37, for example, a rotary encoder is used. In FIG. 1 (b), it is assumed that the sliding surface 1b is worn by the height h. Two guide rollers 32a,
32b contacts a fixed position p on both sides of the trolley wire 1,
On the other hand, since the measuring roller 33 comes into contact with the sliding surface 1b, the measuring roller is elevated by the amount of wear h from the dotted line to the position indicated by the solid line, as compared with when there is no wear. This increase causes the rotary encoder 37 to rotate, and the amount of increase, that is, the amount of wear h, is detected from the rotation angle, and this is subtracted from the diameter φ to calculate the remaining diameter D. Here, the limit of the wear amount that can be measured by this method will be described. The height position of the contact point p changes depending on the size of the illustrated angle θ of the guide roller 32. It needs to be small. However, since there is a limit to the angle θ, there is a limit to the amount of wear that can be measured.
One-third is the maximum limit and is actually less than this.
In FIG. 2, the track maintenance work vehicle 4 is provided with a support mechanism 6, and its fixed base 61 is fixed by a fixing bolt 62. A hinge rotation mechanism 63 is provided for the fixed base, and a movable arm 64 capable of vertical movement and horizontal rotation is attached to this.
The spring 65 urges the movable arm upward. A vertically rotating plate 66 is pivotally supported on the tip of the movable arm, and the detecting unit 3 is attached to this.
Mount and fix. When measuring wear, the spring
The urging force of 65 raises the movable arm 64 to bring both guide rollers 32a and 32b into contact with both side surfaces of the trolley wire. When the track maintenance work vehicle travels at a low speed, angle signals corresponding to the amount of rise of the measurement roller 33 are sequentially detected by the rotary encoder 37, and the detection signal is input to the arithmetic processing unit 5 by the connection cable 38 and processed. The remaining diameter is sequentially calculated as the vehicle travels, and its continuous data is obtained.

FIG. 3 shows a second embodiment of the present invention, in which the wear measuring device of the first embodiment is provided with the following insulation measures corresponding to a trolley wire pressurized with a high voltage. .. That is, the insulating mat 71 is spread on the work surface of the track maintenance work vehicle 4, the fixed base 61 is insulated and fixed on the work surface of the track maintenance work vehicle 4, and the insulating base 72 is also insulated between the vertical rotating plate 66 and the follow-up base 31. Insulator 73 is interposed for insulation. The arithmetic processing unit 5 is placed on the insulating mat 71. On the other hand, the rotary encoder 37 and the arithmetic processing unit 5 are connected by an insulating method using a known combination of an optical fiber and a photo coupler.
By taking the above insulation measures, the grounding of the trolley wire by the detection unit is prevented, and the safety for the measurer who works on the insulating mat is secured. Needless to say, the above-mentioned insulating mat, insulator, photocoupler, and the like have a sufficient withstand voltage against the high voltage of the trolley wire.

[0009]

As described above, the roller type line wear measuring device according to the present invention has a simple structure and is small in size and light in weight. It is mounted on a simple track maintenance work vehicle and runs at a low speed, regardless of day or night. It is possible to measure the amount of wear during running, and since insulation measures against high voltage of the trolley wire are considered, it is possible to measure even the trolley wire under pressure,
There is a great contribution to labor saving and safety measures for wear measurement of trolley wires such as outlying lines and lateral lines that are manually performed.

[Brief description of drawings]

1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a perspective external view of a detection unit, and FIG. 1B is an explanatory view of the principle of wear measurement of a trolley wire.

FIG. 2 is an overall configuration diagram of a wear measuring device.

FIG. 3 shows a second embodiment of the present invention, in which the wear measuring device of the first embodiment is provided with insulation measures.

4A and 4B show an erection structure of an overhead trolley wire, FIG. 4A is a side view, FIG. 4B is a plan view, and FIG. 4C is a sectional view of the trolley wire.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Trolley wire, 1a ... Groove, 1b ... Sliding surface, 11 ... Supporting electric pole, 12 ... Messenger wire, 13 ... Hanger, 2 ... Electric vehicle, 21 ... Pantograph, 211 ... Sliding plate, 3 ... Detection part, 31
… Following base, 32a, 32b… Guide roller, 33… Measuring roller, 331… Center axis, 34… Fixing tool, 35… Spring,
36 ... Coupling arm, 37 ... Detector or rotary encoder, 38 ... Connection cable, 4 ... Track maintenance work vehicle, 5 ... Processing unit, 6 ... Support mechanism, 61 ... Fixed base, 62 ... Fixing bolt,
63 ... Hinge rotation mechanism, 64 ... Movable arm, 65 ... Spring, 66 ... Vertical rotating plate, 71 ... Insulating mat, 72, 73 ... Insulator.

Claims (2)

[Claims] 1. A support mechanism provided on a track maintenance work vehicle, capable of moving up and down and rotating in a horizontal direction, and having a movable arm biased upward, and a trolley wire attached to the tip of the movable arm. A follow-up base having two guide rollers that come into contact with a fixed position on both side surfaces and follow up-and-down movement and lateral deviation of the same, and provided between the two guide rollers on the follow-up base. From a measuring roller that comes into contact with the sliding surface of the trolley wire and that rises according to the amount of wear of the sliding surface with reference to the height position of the guide roller, and a detector that detects the rising amount of the measuring roller and outputs a detection signal And a calculation processing unit which is mounted on the track maintenance work vehicle and which processes the detection signal to calculate the remaining diameter of the trolley wire, and which is continuously operated while the track maintenance work vehicle is running. Then, the roller-type trolley wire wear measuring device is characterized in that the remaining diameter is measured. 2. Corresponding to the high voltage applied to the trolley wire, the support mechanism and the detection unit are insulated against the track maintenance work vehicle by high voltage, and the detection unit and the arithmetic processing unit are electrically connected to each other. The roller type trolley wire wear measuring device according to claim 1, wherein cables are connected by a high voltage insulation method.