JP2012215497A - Deterioration diagnostic device of power cable coating - Google Patents

Deterioration diagnostic device of power cable coating Download PDF

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JP2012215497A
JP2012215497A JP2011081759A JP2011081759A JP2012215497A JP 2012215497 A JP2012215497 A JP 2012215497A JP 2011081759 A JP2011081759 A JP 2011081759A JP 2011081759 A JP2011081759 A JP 2011081759A JP 2012215497 A JP2012215497 A JP 2012215497A
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coating
electric wire
hardness
deterioration
rollers
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JP5429222B2 (en
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Yoshiko Fujima
美子 藤間
Akira Maeda
晃 前田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a deterioration diagnostic device of a power cable coating for diagnosing deterioration of the power cable coating even without investigating hardness of the power cable coating before it is deteriorated.SOLUTION: A deterioration diagnostic device of a power cable coating is constituted by including: a measurement part 4 which measures hardness of coating of a power cable 1 for every position of the power cable 1 in the longitudinal direction; and a diagnostic part 11 which diagnoses deterioration of the coating based on degrees of variation of the hardness of the coating for every position of the power cable 1 in the longitudinal direction. By constituting the deterioration diagnostic device of power cable coating into such configurations, the deterioration of the coating of the power cable 1 is diagnosed even without investigating the hardness of the coating of the power cable 1 before it is deteriorated.

Description

この発明は、電線被覆の劣化診断装置に関するものである。   The present invention relates to a wire covering deterioration diagnosis apparatus.

電線被覆の劣化診断装置として、診断対象の電線被覆の硬度と予め調査しておいた劣化する前の電線被覆の硬度とを比較して、診断対象の電線被覆の劣化を診断するものが提案されている（例えば、特許文献１参照）。   A device for diagnosing the deterioration of a wire covering to be diagnosed by comparing the hardness of the wire covering to be diagnosed with the hardness of the wire covering before deterioration which has been investigated in advance has been proposed as a device for diagnosing deterioration of the wire covering. (For example, refer to Patent Document 1).

特許第３３４１９８６号公報Japanese Patent No. 3341986

しかしながら、特許文献１記載のものにおいては、電線被覆の材料のばらつき等を考慮すると、劣化する前の電線被覆の硬度を相当数調査する必要がある。   However, in the thing of patent document 1, when the dispersion | variation in the material of an electric wire coating, etc. are considered, it is necessary to investigate the hardness of the electric wire coating before deteriorating considerably.

この発明は、上述のような課題を解決するためになされたもので、その目的は、劣化する前の電線被覆の硬度を調査しなくても、電線被覆の劣化を診断することができる電線被覆の劣化診断装置を提供することである。   The present invention has been made to solve the above-described problems. The purpose of the present invention is to make it possible to diagnose the deterioration of the wire coating without investigating the hardness of the wire coating before the deterioration. It is providing the degradation diagnostic apparatus.

この発明に係る電線被覆の劣化診断装置は、電線の被覆の硬度を前記電線の長手方向の位置毎に測定する測定部と、前記位置毎の硬度のばらつき度合いに基づいて、前記被覆の劣化を診断する診断部と、を備えたものである。   The wire covering deterioration diagnosis apparatus according to the present invention is configured to measure the deterioration of the covering based on a measurement unit that measures the hardness of the covering of the electric wire for each position in the longitudinal direction of the electric wire and the degree of hardness variation for each position. And a diagnosis unit for diagnosis.

この発明によれば、劣化する前の電線被覆の硬度を調査しなくても、電線被覆の劣化を診断することができる。   According to the present invention, it is possible to diagnose the deterioration of the electric wire coating without investigating the hardness of the electric wire coating before the deterioration.

この発明の実施の形態１における電源被覆の劣化診断装置の正面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a power supply coating deterioration diagnosis apparatus according to Embodiment 1 of the present invention. この発明の実施の形態１における電源被覆の劣化診断装置の要部の斜視図である。It is a perspective view of the principal part of the degradation diagnosis apparatus of the power supply coating | cover in Embodiment 1 of this invention. この発明の実施の形態１における電源被覆の劣化診断装置の要部の縦断面図である。It is a longitudinal cross-sectional view of the principal part of the degradation diagnosis apparatus of the power supply coating | cover in Embodiment 1 of this invention. この発明の実施の形態１における電源被覆の劣化診断装置の縦断面図である。It is a longitudinal cross-sectional view of the degradation diagnosis apparatus for power supply covering in Embodiment 1 of this invention. この発明の実施の形態１における電源被覆の劣化診断装置による電線被覆の劣化の診断方法を説明するための図である。It is a figure for demonstrating the diagnosis method of the deterioration of the electric wire covering by the power supply covering deterioration diagnosis apparatus in Embodiment 1 of this invention. この発明の実施の形態１における電源被覆の劣化診断装置を利用して劣化を診断される電線被覆の硬度を説明するための図である。It is a figure for demonstrating the hardness of the electric wire coating | dye diagnosed for degradation using the power supply coating degradation diagnostic apparatus in Embodiment 1 of this invention. この発明の実施の形態１における電源被覆の劣化診断装置を利用して劣化を診断される電線被覆の劣化の進行を説明するための図である。It is a figure for demonstrating the progress of deterioration of the electric wire covering diagnosed for deterioration using the power supply covering deterioration diagnosing device in Embodiment 1 of this invention. この発明の実施の形態１における電源被覆の劣化診断装置による電線被覆の硬度の解析結果を説明するための図である。It is a figure for demonstrating the analysis result of the hardness of the electric wire coating | cover by the degradation diagnosis apparatus of the power supply coating | cover in Embodiment 1 of this invention.

この発明を実施するための形態について添付の図面に従って説明する。なお、各図中、同一又は相当する部分には同一の符号を付しており、その重複説明は適宜に簡略化ないし省略する。   A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

実施の形態１．
図１はこの発明の実施の形態１における電源被覆の劣化診断装置の正面図である。 Embodiment 1 FIG.
1 is a front view of a power supply coating deterioration diagnosis apparatus according to Embodiment 1 of the present invention.

図１において、１は電線である。電線１は、電気製品の配線等に用いられる。例えば、電線１は、ＶＶＦケーブル等からなる。２は劣化診断装置である。劣化診断装置２の一側には、把持部３が設けられる。劣化診断装置２の他側には、測定部４が設けられる。劣化診断装置２の中央には、メータ５が設けられる。   In FIG. 1, 1 is an electric wire. The electric wire 1 is used for wiring of electrical products. For example, the electric wire 1 is made of a VVF cable or the like. Reference numeral 2 denotes a deterioration diagnosis device. On one side of the deterioration diagnosis device 2, a grip portion 3 is provided. On the other side of the deterioration diagnosis device 2, a measurement unit 4 is provided. A meter 5 is provided in the center of the deterioration diagnosis device 2.

次に、図２を用いて、劣化診断装置２の測定部４を具体的に説明する。
図２はこの発明の実施の形態１における電源被覆の劣化診断装置の要部の斜視図である。図３はこの発明の実施の形態１における電源被覆の劣化診断装置の要部の縦断面図である。 Next, the measurement unit 4 of the deterioration diagnosis apparatus 2 will be described in detail with reference to FIG.
FIG. 2 is a perspective view of a main part of the power supply coating deterioration diagnosis apparatus according to Embodiment 1 of the present invention. FIG. 3 is a longitudinal sectional view of a main part of the power supply coating deterioration diagnosis apparatus according to Embodiment 1 of the present invention.

図２に示すように、測定部４は、固定側ローラ６、測定側ローラ７、弾性体８を備える。固定側ローラ６と測定側ローラ７とは、互いの外周面を対向させるように配置される。弾性体８は、固定側ローラ６と測定側ローラ７の両側で、固定側ローラ６の回転軸と測定側ローラ７の回転軸とを連結する。弾性体８は、固定側ローラ６と測定側ローラ７との対向部が近づく方向に、固定側ローラ６と測定側ローラ７と付勢する。   As shown in FIG. 2, the measurement unit 4 includes a fixed side roller 6, a measurement side roller 7, and an elastic body 8. The fixed side roller 6 and the measurement side roller 7 are disposed so that their outer peripheral surfaces are opposed to each other. The elastic body 8 connects the rotation shaft of the fixed roller 6 and the rotation shaft of the measurement roller 7 on both sides of the fixed roller 6 and the measurement roller 7. The elastic body 8 urges the fixed side roller 6 and the measurement side roller 7 in a direction in which the facing portion between the fixed side roller 6 and the measurement side roller 7 approaches.

図３に示すように、固定側ローラ６の外周面には、凹部６ａが形成される。凹部６ａは、固定側ローラ６の外周面の全周に渡って連続的に形成される。凹部６ａは、断面の曲率が所定値以上となるように形成される。   As shown in FIG. 3, a recess 6 a is formed on the outer peripheral surface of the fixed side roller 6. The concave portion 6 a is continuously formed over the entire circumference of the outer peripheral surface of the fixed roller 6. The recess 6a is formed so that the curvature of the cross section becomes a predetermined value or more.

図３に示すように、測定側ローラ７の外周面には、凸部７ａが形成される。凸部７ａは、測定側ローラ７の外周面の全周に渡って連続的に形成される。凸部７ａは、断面の曲率が所定値以上となるように形成される。固定側ローラ６と測定側ローラ７との対向部において、凸部７ａの端部は、凹部６ａの底部に対向するように配置される。   As shown in FIG. 3, a convex portion 7 a is formed on the outer peripheral surface of the measurement side roller 7. The convex portion 7 a is continuously formed over the entire circumference of the outer peripheral surface of the measurement side roller 7. The convex part 7a is formed so that the curvature of the cross section becomes a predetermined value or more. In the facing portion between the fixed side roller 6 and the measurement side roller 7, the end portion of the convex portion 7a is disposed so as to face the bottom portion of the concave portion 6a.

次に、図４を用いて、劣化診断装置２の内部を説明する。
図４はこの発明の実施の形態１における電源被覆の劣化診断装置の縦断面図である。 Next, the inside of the deterioration diagnosis device 2 will be described with reference to FIG.
FIG. 4 is a longitudinal sectional view of the power supply coating deterioration diagnosis apparatus according to Embodiment 1 of the present invention.

図４に示すように、劣化診断装置２の内部には、センサ部９、記憶部１０、診断部１１が設けられる。センサ部９は、固定側ローラ６から離れる方向に測定側ローラ７にかかる圧力を測定する機能を備える。センサ部９は、固定側ローラ６又は測定側ローラ７の回転量を測定する機能を備える。記憶部１０は、センサ部９の測定値を記憶する機能を備える。記憶部１０は、測定値の解析を行うためのプログラムを記憶する機能を備える。診断部１１は、記憶部１０に記憶されたプログラムを利用してセンサ部９の測定値を解析し、電線１の被覆の劣化を診断する機能を備える。   As shown in FIG. 4, a sensor unit 9, a storage unit 10, and a diagnosis unit 11 are provided inside the deterioration diagnosis device 2. The sensor unit 9 has a function of measuring the pressure applied to the measurement side roller 7 in the direction away from the fixed side roller 6. The sensor unit 9 has a function of measuring the amount of rotation of the fixed side roller 6 or the measurement side roller 7. The storage unit 10 has a function of storing the measurement value of the sensor unit 9. The storage unit 10 has a function of storing a program for analyzing a measurement value. The diagnosis unit 11 has a function of analyzing the measurement value of the sensor unit 9 using a program stored in the storage unit 10 and diagnosing the deterioration of the covering of the electric wire 1.

次に、図５を用いて、電線１の被覆の劣化を診断する方法を説明する。
図５はこの発明の実施の形態１における電源被覆の劣化診断装置による電線被覆の劣化の診断方法を説明するための図である。 Next, a method for diagnosing deterioration of the covering of the electric wire 1 will be described with reference to FIG.
FIG. 5 is a diagram for explaining a method for diagnosing the deterioration of the wire coating by the power supply coating deterioration diagnosing device according to the first embodiment of the present invention.

まず、固定側ローラ６と測定側ローラ７との間に、電線１の一端部側の接続点が挿入される。電線１の被覆は、弾性体８の付勢力により、固定側ローラ６の凹部６ａ底部と測定側ローラ７の凸部７ａ端部に挟み込まれるように接触する。この状態で、劣化診断装置２が電線１の長手方向中央へ移動される。この移動に追従して、固定側ローラ６と測定側ローラ７とが回転する。   First, a connection point on one end side of the electric wire 1 is inserted between the fixed roller 6 and the measurement roller 7. The covering of the electric wire 1 is brought into contact with the bottom of the concave portion 6 a of the fixed side roller 6 and the end of the convex portion 7 a of the measuring side roller 7 by the urging force of the elastic body 8. In this state, the deterioration diagnosis device 2 is moved to the longitudinal center of the electric wire 1. Following this movement, the fixed side roller 6 and the measurement side roller 7 rotate.

この際、センサ部９は、固定側ローラ６又は測定側ローラ７の回転量に基づいて、電線１の一端部からの距離ｘを検出する。これと同時に、センサ部９は、距離ｘの各位置で測定側ローラ７にかかる圧力を連続的に検出する。この圧力に基づいて、センサ部９は、距離ｘの各位置で電線１の被覆の硬度Ｆ（ｘ）を検出する。   At this time, the sensor unit 9 detects the distance x from one end portion of the electric wire 1 based on the rotation amount of the fixed side roller 6 or the measurement side roller 7. At the same time, the sensor unit 9 continuously detects the pressure applied to the measurement side roller 7 at each position of the distance x. Based on this pressure, the sensor unit 9 detects the hardness F (x) of the covering of the electric wire 1 at each position of the distance x.

この際、メータ５は、硬度Ｆ（ｘ）を表示する。記憶部１０は、距離ｘと硬度Ｆ（ｘ）とを対応付けて記憶する。診断部１１は、リアルタイムで硬度Ｆ（ｘ）の最大値、最小値、平均値、標準偏差等の数値解析を行う。この数値解析の結果に基づいて、診断部１１は、電線１の被覆の劣化を診断する。   At this time, the meter 5 displays the hardness F (x). The storage unit 10 stores the distance x and the hardness F (x) in association with each other. The diagnosis unit 11 performs numerical analysis such as the maximum value, the minimum value, the average value, and the standard deviation of the hardness F (x) in real time. Based on the result of the numerical analysis, the diagnosis unit 11 diagnoses the deterioration of the covering of the electric wire 1.

次に、図６を用いて、電線１の被覆の硬度を説明する。
図６はこの発明の実施の形態１における電源被覆の劣化診断装置を利用して劣化を診断される電線被覆の硬度を説明するための図である。 Next, the hardness of the coating of the electric wire 1 will be described with reference to FIG.
FIG. 6 is a diagram for explaining the hardness of the electric wire coating that is diagnosed for deterioration using the power supply coating deterioration diagnosis device according to the first embodiment of the present invention.

図６においては、電線１の被覆の一端部側が劣化している。この場合、電線１の被覆の一端部側の硬度Ｆ（ｘ）は大きな値となる。これに対し、電線１の被覆の中央側は劣化していない。この場合、電線１の被覆の中央側の硬度Ｆ（ｘ）は小さな値となる。   In FIG. 6, the one end part side of the coating | cover of the electric wire 1 has deteriorated. In this case, the hardness F (x) on one end portion side of the coating of the electric wire 1 is a large value. On the other hand, the center side of the covering of the electric wire 1 is not deteriorated. In this case, the hardness F (x) on the center side of the coating of the electric wire 1 becomes a small value.

次に、図７を用いて、電線１の被覆の劣化の進行を説明する。
図７はこの発明の実施の形態１における電源被覆の劣化診断装置を利用して劣化を診断される電線被覆の劣化の進行を説明するための図である。 Next, the progress of the deterioration of the covering of the electric wire 1 will be described with reference to FIG.
FIG. 7 is a diagram for explaining the progress of the deterioration of the electric wire covering that is diagnosed for deterioration using the power supply covering deterioration diagnosing apparatus according to the first embodiment of the present invention.

図７の最上段は、劣化していない電線１の被覆１ａを示す。被覆１ａの硬度は、電線１の位置によらずほぼ均一である。図７の上から２段目は、経年劣化の始まった電線１の被覆１ｂを示す。本図においては、被覆１ｂの一側が劣化部となる。この劣化部の硬度は、劣化していない部分よりも大きな値となる。   The uppermost part of FIG. 7 shows the coating 1a of the electric wire 1 that has not deteriorated. The hardness of the coating 1a is substantially uniform regardless of the position of the electric wire 1. The second row from the top of FIG. 7 shows the coating 1b of the electric wire 1 that has started to deteriorate over time. In this figure, one side of the coating 1b is a deteriorated part. The hardness of the deteriorated portion is larger than that of the non-deteriorated portion.

図７の上から３段目は、上から２段目の電線１の被覆１ｂよりも経年劣化の進行した電線１の被覆１ｃを示す。この場合、劣化部が電線１の中央側に進行する。劣化部の電線１の一端部側の硬度は、被覆１ｂの一端部側の硬度よりも大きな値となる。   The third row from the top in FIG. 7 shows the coating 1c of the electric wire 1 that has deteriorated over time as compared with the coating 1b of the electric wire 1 in the second row from the top. In this case, the deteriorated portion proceeds to the center side of the electric wire 1. The hardness of one end of the deteriorated portion of the electric wire 1 is larger than the hardness of one end of the coating 1b.

図７の上から４段目は、上から３段目の電線１の被覆１ｃよりも経年劣化の進行した電線１の被覆１ｄを示す。この場合、劣化部が電線１の中央側にさらに進行する。劣化部の電線１の一端部側の硬度は、被覆１ｃの一端部側の硬度よりもさらに大きな値となる。   The fourth row from the top in FIG. 7 shows the coating 1d of the electric wire 1 that has deteriorated over time as compared to the coating 1c of the third electric wire 1 from the top. In this case, the deteriorated portion further proceeds to the center side of the electric wire 1. The hardness of the deteriorated portion on the one end side of the electric wire 1 is a value larger than the hardness on the one end portion side of the coating 1c.

次に、図８を用いて、図７の被覆１ａ〜１ｄの硬度の解析結果を説明する。
図８はこの発明の実施の形態１における電源被覆の劣化診断装置による電線被覆の硬度の解析結果を説明するための図である。 Next, the analysis results of the hardness of the coatings 1a to 1d in FIG. 7 will be described with reference to FIG.
FIG. 8 is a diagram for explaining an analysis result of the hardness of the wire coating by the power supply coating deterioration diagnosis apparatus according to Embodiment 1 of the present invention.

図８の横軸は接続点からの電線１の距離である。これらの距離は、各被覆１ａ〜１ｄの長手方向の位置に対応したものである。図８の縦軸は各被覆１ａ〜１ｄの硬度の最小値に対する各位置の硬度の比である。１２ａ〜１２ｄは、それぞれ図７の被覆１ａ〜１ｄの解析結果を示す。   The horizontal axis in FIG. 8 is the distance of the electric wire 1 from the connection point. These distances correspond to the positions in the longitudinal direction of the respective coatings 1a to 1d. The vertical axis | shaft of FIG. 8 is ratio of the hardness of each position with respect to the minimum value of the hardness of each coating | cover 1a-1d. 12a to 12d show the analysis results of the coatings 1a to 1d in FIG.

被覆１ａの硬度は、各位置において均一である。このため、解析結果１２ａに示すように、各位置において、縦軸の比は１．００となる。被覆１ｂは、接続点近傍のみ劣化している。このため、解析結果１２ｂに示すように、距離０ｍの位置において、縦軸の比は１．０５となる。これに対し、距離０ｍ以外の位置においては、縦軸の比は１．００となる。   The hardness of the coating 1a is uniform at each position. For this reason, as shown in the analysis result 12a, the ratio of the vertical axis is 1.00 at each position. The coating 1b is deteriorated only in the vicinity of the connection point. For this reason, as shown in the analysis result 12b, the ratio of the vertical axis is 1.05 at the position of the distance 0 m. On the other hand, at a position other than the distance of 0 m, the ratio of the vertical axis is 1.00.

被覆１ｃは、被覆１ｂよりも劣化の進行したものである。このため、解析結果１２ｃに示すように、距離０ｍの位置においては、縦軸の比が１．１５となる。これに対し、距離１０ｍの位置においては、縦軸の比は１．１０となる。距離２０ｍの位置においては、縦軸の比は１．０５となる。   The coating 1c is more deteriorated than the coating 1b. For this reason, as shown in the analysis result 12c, the ratio of the vertical axis is 1.15 at the distance of 0 m. On the other hand, the ratio of the vertical axis is 1.10. At a distance of 20 m, the ratio of the vertical axis is 1.05.

被覆１ｄは、被覆１ｃよりも劣化の進行したものである。このため、解析結果１２ｄに示すように、距離０ｍ、１０ｍの位置において、縦軸の比が１．３５となる。これに対し、距離２０ｍ、３０ｍ、４０ｍの位置においては、縦軸の比が１．２５となる。   The coating 1d is more deteriorated than the coating 1c. For this reason, as shown in the analysis result 12d, the ratio of the vertical axis is 1.35 at the distances of 0 m and 10 m. On the other hand, the ratio of the vertical axis is 1.25 at the distances of 20 m, 30 m, and 40 m.

本実施の形態においては、診断部１１は、縦軸の比が所定値以上となる位置のある被覆１ａ〜１ｄを劣化していると診断する。例えば、所定値が１．１０に設定された場合は、被覆１ｃと被覆１ｄとが劣化していると診断される。これに対し、所定値が１．２５に設定された場合は、被覆１ｄのみが劣化していると診断される。   In the present embodiment, the diagnosis unit 11 diagnoses that the coatings 1a to 1d having positions where the ratio of the vertical axis is equal to or greater than a predetermined value are deteriorated. For example, when the predetermined value is set to 1.10, it is diagnosed that the covering 1c and the covering 1d are deteriorated. On the other hand, when the predetermined value is set to 1.25, it is diagnosed that only the covering 1d is deteriorated.

なお、被覆１ｄよりも劣化の進行した被覆においては、縦軸の比が減少する。しかしながら、このような被覆は著しく変色する。このため、作業者による外見検査で被覆の劣化が診断される。   It should be noted that the ratio of the vertical axis decreases in the coating that has deteriorated more than the coating 1d. However, such coatings are significantly discolored. For this reason, the deterioration of the coating is diagnosed by appearance inspection by the operator.

以上で説明した実施の形態１によれば、電線１の被覆の位置毎の硬度のばらつき度合いに基づいて、電線１の被覆の劣化が診断される。このため、劣化する前の電線１の被覆の硬度を調査しなくても、電線１の被覆の劣化を診断することができる。   According to the first embodiment described above, the deterioration of the covering of the electric wire 1 is diagnosed based on the degree of hardness variation for each position of the covering of the electric wire 1. For this reason, even if it does not investigate the hardness of the coating | cover of the electric wire 1 before deteriorating, the deterioration of the coating | cover of the electric wire 1 can be diagnosed.

本実施の形態においては、図８の縦軸の比が所定値以上となった場合に、電線１の被覆が劣化していると診断される。このため、簡単な数値解析で、電線１の被覆の劣化を診断することができる。   In the present embodiment, it is diagnosed that the covering of the electric wire 1 is deteriorated when the ratio of the vertical axis in FIG. For this reason, the deterioration of the covering of the electric wire 1 can be diagnosed by simple numerical analysis.

また、固定側ローラ６と測定側ローラ７の対向部に電線１の被覆を接触させた状態で、劣化診断装置２を移動させることで、電線１の被覆の位置毎の硬度が測定される。このため、簡単な方法で、外観では判断できない電線１の被覆の劣化を診断することができる。   Moreover, the hardness for every position of the coating | cover of the electric wire 1 is measured by moving the deterioration diagnostic apparatus 2 in the state which made the coating | cover of the electric wire 1 contact the opposing part of the fixed side roller 6 and the measurement side roller 7. FIG. For this reason, it is possible to diagnose the deterioration of the covering of the electric wire 1 that cannot be determined from the appearance by a simple method.

また、固定側ローラ６の凹部６ａと測定側ローラ７の凸部７ａとは、断面の曲率が所定値以上になるように形成される。このため、固定側ローラ６の凹部６ａ底部と測定側ローラ７の凸部７ａ端部とで電線１を挟み込んだ際に、電線１の被覆の損傷を避けることができる。   Further, the concave portion 6a of the fixed side roller 6 and the convex portion 7a of the measurement side roller 7 are formed so that the curvature of the cross section becomes a predetermined value or more. For this reason, when the electric wire 1 is sandwiched between the bottom of the concave portion 6a of the fixed side roller 6 and the end of the convex portion 7a of the measurement side roller 7, damage to the coating of the electric wire 1 can be avoided.

なお、電線１の硬度を測定する機能は、汎用の硬度計、プッシュプルゲージ、圧力センサを流用することができる。   In addition, the function which measures the hardness of the electric wire 1 can divert a general purpose hardness meter, a push pull gauge, and a pressure sensor.

また、測定側ローラ７と電線１の被覆との接触部の長手方向の長さが電線１の被覆の劣化部分の距離よりも長くなるようにするとよい。この場合、電線１の被覆の劣化部分を見逃すことを防止できる。これにより、電線１の被覆の硬度に関し、測定のばらつきを低減することができる。   Further, the length in the longitudinal direction of the contact portion between the measurement side roller 7 and the covering of the electric wire 1 may be longer than the distance of the deteriorated portion of the covering of the electric wire 1. In this case, it is possible to prevent missing portions of the coating of the electric wire 1 from being overlooked. Thereby, the measurement dispersion | variation can be reduced regarding the hardness of the coating | cover of the electric wire 1. FIG.

また、本実施の形態の劣化診断装置２を利用する際、作業者は、把持部３を片手で持って、電線１の長手方向に移動するだけでよい。このため、簡単な作業で、電線１の被覆の劣化を診断することができる。   Further, when using the degradation diagnosis device 2 of the present embodiment, the operator only has to hold the grip portion 3 with one hand and move in the longitudinal direction of the electric wire 1. For this reason, deterioration of the covering of the electric wire 1 can be diagnosed by a simple operation.

１ 電線
１ａ〜１ｄ 被覆
２ 劣化診断装置
３ 把持部
４ 測定部
５ メータ
６ 固定側ローラ
６ａ 凹部
７ 測定側ローラ
７ａ 凸部
８ 弾性体
９ センサ部
１０ 記憶部
１１ 診断部
１２ａ〜１２ｄ 解析結果 DESCRIPTION OF SYMBOLS 1 Electric wire 1a-1d Cover 2 Degradation diagnostic device 3 Grasp part 4 Measuring part 5 Meter 6 Fixed side roller 6a Concave part 7 Measuring side roller 7a Convex part 8 Elastic body 9 Sensor part 10 Memory | storage part 11 Diagnostic part 12a-12d Analysis result

Claims (4)

電線の被覆の硬度を前記電線の長手方向の位置毎に測定する測定部と、
前記位置毎の硬度のばらつき度合いに基づいて、前記被覆の劣化を診断する診断部と、
を備えた電線被覆の劣化診断装置。 A measuring unit for measuring the hardness of the coating of the electric wire for each position in the longitudinal direction of the electric wire;
Based on the degree of hardness variation for each position, a diagnostic unit that diagnoses the deterioration of the coating,
Wire covering deterioration diagnosis device comprising: 前記診断部は、前記位置毎の硬度の最小値に対する硬度の比が所定値以上となる位置のある被覆を劣化していると診断する請求項１記載の電線被覆の劣化診断装置。   2. The wire covering deterioration diagnosis apparatus according to claim 1, wherein the diagnosis unit diagnoses that the covering having a position where the ratio of the hardness to the minimum hardness value at each position is a predetermined value or more is deteriorated. 前記測定部は、
互いの外周面を対向させた一対のローラと、
前記一対のローラの対向部が近づく方向に前記一対のローラを付勢する弾性体と、
を備え、
前記一対のローラの対向部で前記電線を挟み込んだ状態で前記一対のローラを前記電線の長手方向に移動させた際に、前記一対のローラの少なくとも一方の回転量に基づいて前記電線の長手方向の位置を検出するとともに前記一対のローラが前記被覆から受ける圧力に基づいて前記硬度を検出し、前記位置毎の硬度を測定する請求項１又は請求項２に記載の電線被覆の劣化診断装置。 The measuring unit is
A pair of rollers facing each other's outer peripheral surfaces;
An elastic body that biases the pair of rollers in a direction in which the facing portions of the pair of rollers approach each other;
With
When the pair of rollers is moved in the longitudinal direction of the electric wire while the electric wire is sandwiched between the opposed portions of the pair of rollers, the longitudinal direction of the electric wire is based on the rotation amount of at least one of the pair of rollers. The wire covering deterioration diagnosis device according to claim 1 or 2, wherein the hardness is detected based on a pressure received by the pair of rollers from the covering, and the hardness at each position is measured. 前記一対のローラの一方は、断面の曲率が所定値以上となるように外周面の全周に渡って連続的に形成された凹部を有し、
前記一対のローラの他方は、断面の曲率が所定値以上となるように外周面の全周に渡って連続的に形成された凸部を有し、前記一対のローラの一方との対向部において、前記凸部が前記凹部の底部に対向するように配置された請求項３記載の電線被覆の劣化診断装置。 One of the pair of rollers has a recess formed continuously over the entire circumference of the outer peripheral surface so that the curvature of the cross section becomes a predetermined value or more,
The other of the pair of rollers has a convex portion that is continuously formed over the entire circumference of the outer peripheral surface so that the curvature of the cross section is equal to or greater than a predetermined value. The wire covering deterioration diagnosis device according to claim 3, wherein the convex portion is disposed so as to face a bottom portion of the concave portion.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014185879A (en) * 2013-03-22 2014-10-02 Chugoku Electric Power Co Inc:The Electric wire deterioration determination device
KR101917976B1 (en) 2018-02-13 2018-11-12 사단법인 대한산업안전협회 Apparatus for guiding wire rope tester
CN115127921A (en) * 2022-08-30 2022-09-30 江苏永鼎股份有限公司 Novel transmission cable check out test set

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Publication number Priority date Publication date Assignee Title
JPS60173439A (en) * 1984-02-17 1985-09-06 Nippon Telegr & Teleph Corp <Ntt> Deciding method of deterioration of covering body of electric wire and deciding device for deterioration degree
JPH08219966A (en) * 1995-02-14 1996-08-30 Showa Electric Wire & Cable Co Ltd Method for diagnosing deterioration of wire/cable
JPH116894A (en) * 1997-06-16 1999-01-12 Mitsubishi Heavy Ind Ltd Cable degradation detector

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS60173439A (en) * 1984-02-17 1985-09-06 Nippon Telegr & Teleph Corp <Ntt> Deciding method of deterioration of covering body of electric wire and deciding device for deterioration degree
JPH08219966A (en) * 1995-02-14 1996-08-30 Showa Electric Wire & Cable Co Ltd Method for diagnosing deterioration of wire/cable
JPH116894A (en) * 1997-06-16 1999-01-12 Mitsubishi Heavy Ind Ltd Cable degradation detector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014185879A (en) * 2013-03-22 2014-10-02 Chugoku Electric Power Co Inc:The Electric wire deterioration determination device
KR101917976B1 (en) 2018-02-13 2018-11-12 사단법인 대한산업안전협회 Apparatus for guiding wire rope tester
CN115127921A (en) * 2022-08-30 2022-09-30 江苏永鼎股份有限公司 Novel transmission cable check out test set
CN115127921B (en) * 2022-08-30 2022-12-13 江苏永鼎股份有限公司 Novel transmission cable check out test set

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