JP4319606B2 - Wheel shape measuring device - Google Patents

Wheel shape measuring device Download PDF

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JP4319606B2
JP4319606B2 JP2004305031A JP2004305031A JP4319606B2 JP 4319606 B2 JP4319606 B2 JP 4319606B2 JP 2004305031 A JP2004305031 A JP 2004305031A JP 2004305031 A JP2004305031 A JP 2004305031A JP 4319606 B2 JP4319606 B2 JP 4319606B2
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shape
flange
tread
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壮一 安田
一義 岸田
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日立交通テクノロジー株式会社
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Description

本発明は鉄道車両の車輪の形状を測定し、その測定結果を用いて車輪の摩耗状態を検出する車輪形状測定装置に関する。   The present invention relates to a wheel shape measuring apparatus that measures the shape of a wheel of a railway vehicle and detects the wear state of the wheel using the measurement result.

従来、鉄道車両の車輪踏面形状を測定するものとして、２つの距離センサを車輪を挟むように配置してフランジ厚やフランジ高さ等を測定する装置が特許文献１に開示されている。   Conventionally, Patent Document 1 discloses an apparatus that measures the thickness of a flange, the height of a flange, and the like by arranging two distance sensors so as to sandwich a wheel as a means for measuring a wheel tread shape of a railway vehicle.

また、撮像手段を用いて車輪形状を測定するものとして特許文献２に開示のものがある。   Further, there is a technique disclosed in Patent Document 2 as a technique for measuring a wheel shape using an imaging means.

特開２００１−８８５０３号公報JP 2001-88503 A

特開平０５−５２５３６号公報Japanese Patent Laid-Open No. 05-52536

特許文献１の方法は、距離センサーを用いて、車輪形状を計測するというものであるが、この方法では距離センサーと踏面との角度関係から、踏面からの十分な戻り光が得られないため踏面部分を正確に測定することはできない。また、特許文献２の方法は、画像処理を用いて、車輪形状を計測するというものであるが、相対的な位置関係は簡単に計測できるが、実寸法を知るのは大変困難である。   The method of Patent Document 1 is to measure the wheel shape using a distance sensor. However, in this method, sufficient return light from the tread cannot be obtained due to the angular relationship between the distance sensor and the tread. The part cannot be measured accurately. Moreover, although the method of patent document 2 is measuring a wheel shape using image processing, although a relative positional relationship can be measured easily, it is very difficult to know an actual dimension.

そこで、本発明の目的は、正確に車輪踏面形状の寸法を求め、車輪の摩耗量やその状態を正確に検出できる車輪形状測定装置を提供するにある。   Therefore, an object of the present invention is to provide a wheel shape measuring apparatus that can accurately determine the dimensions of the wheel tread shape and accurately detect the amount of wear and the state of the wheel.

上記目的を達成するため、本発明では、鉄道車両の車輪踏面形状を測定して、フランジの摩耗量や踏面の摩耗状態を検査するため、走行する車輪のフランジ形状を車輪にレーザ光を照射し、その反射光より求める距離センサと、車輪踏面を撮像して踏面の摩耗状態を測定する撮像装置と、前記距離センサと撮像装置からのデータを処理し摩耗量を求める制御部とを設けた構成とした。   In order to achieve the above object, in the present invention, the shape of a wheel tread of a railway vehicle is measured to inspect the amount of wear of the flange and the state of wear of the tread. , A distance sensor obtained from the reflected light, an imaging device that images a wheel tread to measure a wear state of the tread, and a control unit that processes the data from the distance sensor and the imaging device to obtain a wear amount It was.

鉄道車両の形状・寸法を正確に測定することで、車輪フランジ部及び踏面部の摩耗量制度よく検出できる。   By accurately measuring the shape and dimensions of the railway vehicle, it is possible to detect the wear amount system of the wheel flange part and the tread part well.

以下図面を用いて本願発明を説明する。   The present invention will be described below with reference to the drawings.

図１に車輪の断面図を示す。
図１に示すように、車輪１は、外側の部分(レールの外側を向いてる部分で以後表面と称する場合もある）１１から内側の部分（以後裏面と称する場合もある)１２までの外周面の外形が徐々に大きくなるように形成された踏面１３と、内側に一体に設けられているフランジ１４とからなる。フランジ１４の外周面は、踏面から連続し、且つ内側から外側に行くに従って肉厚が徐々に薄くなるような凸曲面をなす。また、車輪の裏面１２側の直径がＷｓの位置に基準溝１５が設けてある。なおこの直径Ｗｓは基準により定めれている。フランジ１４の外側面側１６をフランジ外面と称し、フランジ１４の内側面側１７を車輪内面と称する。 FIG. 1 shows a cross-sectional view of the wheel.
As shown in FIG. 1, the wheel 1 has an outer peripheral surface from an outer portion (a portion facing the outside of the rail and sometimes referred to as a surface hereinafter) 11 to an inner portion (hereinafter also referred to as a back surface) 12. The tread surface 13 is formed so that its outer shape gradually increases, and the flange 14 is integrally provided inside. The outer peripheral surface of the flange 14 has a convex curved surface that is continuous from the tread surface and gradually decreases in thickness from the inside toward the outside. Further, a reference groove 15 is provided at a position where the diameter on the rear surface 12 side of the wheel is Ws. The diameter Ws is determined by the standard. The outer surface 16 of the flange 14 is referred to as the flange outer surface, and the inner surface 17 of the flange 14 is referred to as the wheel inner surface.

ここで、車輪直径をＷｄでフランジ高さをｆｈで、フランジ厚さをｄで車輪直径Ｗｄと基準溝直径Ｗｓとの間をＷｔで表している。   Here, the wheel diameter is Wd, the flange height is fh, the flange thickness is d, and the distance between the wheel diameter Wd and the reference groove diameter Ws is Wt.

図２に車輪形状測定装置の全体の配置構成を、図３に車輪を挟んで設けられる各種センサ及び、カメラの配置を示す。   FIG. 2 shows the overall arrangement of the wheel shape measuring apparatus, and FIG. 3 shows the arrangement of various sensors and cameras provided with the wheel interposed therebetween.

図２に示すように、レール２の外側に第１の距離センサ２１と、車輪踏面を撮像するカメラ２３と、車輪踏面を照らすための照明２４と、照明２４のフラッシュタイミングを決定する車輪検知センサ２９ａ、２９ｂを設けてある。またレール２の内側に第２の距離センサ２２を設けてある。また車両の侵入を検知する車両進入検知センサ２５ａ及び２５ｂ、車両の退出を検知する車両退出検知センサ２６ａ及び２６ｂ、一つの車輪に対して計測開始タイミングを決めるための車輪検知センサ２７ａ及び２７ｂ、計測終了のタイミングを決めるための車輪退出検知センサ２８ａ及び２８ｂがそれぞれ設けてある。なお、車両の地上側には、列車編成番号等の車両情報を受信するための受信器３０が、車両の先頭部には列車編成番号等の車両情報を発信する発信機が設けてある。   As shown in FIG. 2, a first distance sensor 21 on the outside of the rail 2, a camera 23 for imaging the wheel tread, an illumination 24 for illuminating the wheel tread, and a wheel detection sensor for determining the flash timing of the illumination 24 29a and 29b are provided. A second distance sensor 22 is provided inside the rail 2. Also, vehicle entry detection sensors 25a and 25b for detecting the entry of the vehicle, vehicle exit detection sensors 26a and 26b for detecting the exit of the vehicle, wheel detection sensors 27a and 27b for determining the measurement start timing for one wheel, measurement Wheel exit detection sensors 28a and 28b for determining the end timing are provided. A receiver 30 for receiving vehicle information such as a train formation number is provided on the ground side of the vehicle, and a transmitter for transmitting vehicle information such as a train formation number is provided at the head of the vehicle.

尚本図では車輪踏面を撮像するカメラ２３や車輪検知センサ等は１組しか表示していないが、車輪全周が撮像できるように複数台設置している。   In this figure, only one set of the camera 23, the wheel detection sensor and the like for imaging the wheel tread is displayed, but a plurality of cameras are installed so that the entire circumference of the wheel can be imaged.

図３に示すように、距離センサ２１は、車輪表側にθ１の角度で光を照射して、その反射光を受光し車輪までの距離を測定する。その設置距離は車輪のフランジから水平方向にＬ１だけ離れた位置に設置してある。また、距離センサ２２は、車輪裏面側に水平方向にＬ２だけ離れて、かつ車輪裏面側に対してθ２の角度で光を照射する位置に設置してある。両センサの設置高さは車輪踏面（車輪とレールの接触点）からｈＧ離れた地上側に設けてある。また、踏面撮像用のカメラ２３は踏面が撮像できるように地上側に所定の角度で設置してあり、車輪検知センサ２９ａ、２９ｂの検知タイミングでフラッシュライト２４を照射して、そのタイミングで車輪踏面部分が撮像できるように制御している。   As shown in FIG. 3, the distance sensor 21 irradiates the front side of the wheel with light at an angle θ1, receives the reflected light, and measures the distance to the wheel. The installation distance is set at a position separated by L1 in the horizontal direction from the flange of the wheel. Further, the distance sensor 22 is installed at a position that is spaced apart by L2 in the horizontal direction on the rear surface side of the wheel and that emits light at an angle θ2 with respect to the rear surface side of the wheel. The installation height of both sensors is provided on the ground side hG away from the wheel tread (contact point between the wheel and the rail). Further, the tread surface imaging camera 23 is installed at a predetermined angle on the ground side so that the tread surface can be imaged. Control is performed so that the portion can be imaged.

図４に車輪踏面計測装置の全体構成の概要を示す。   FIG. 4 shows an outline of the overall configuration of the wheel tread measuring apparatus.

図４に示すように、本装置では、大きく区分すると距離測定装置１０１と、撮像装置１０２と、前記２つの形状測定装置からの情報を受け取り、車輪形状を求めたり、求めたデータを蓄積する情報処理装置１０３とから構成されている。   As shown in FIG. 4, in this apparatus, when roughly divided, information is received from the distance measuring device 101, the imaging device 102, and the two shape measuring devices, and the wheel shape is obtained or the obtained data is stored. The processing apparatus 103 is comprised.

距離測定装置１０１は、フランジ外面までの距離を測定する第１距離センサ２１、車輪内面までの距離を測定する第２距離センサ２２、測定開始・終了を決定するための車輪進入検知センサ２７ａ及び２７ｂ、車輪退出検知センサ２８ａ及び２８ｂと、前記センサを制御するための距離測定制御部１０４からなる。   The distance measuring device 101 includes a first distance sensor 21 that measures the distance to the outer surface of the flange, a second distance sensor 22 that measures the distance to the inner surface of the wheel, and wheel approach detection sensors 27a and 27b for determining the start and end of the measurement. , Wheel exit detection sensors 28a and 28b, and a distance measurement control unit 104 for controlling the sensors.

また、撮像部１０２は、車輪を撮像するカメラ２３と、車輪に所定のタイミングで光を照射する照明２４と、所定の位置で車輪の通過を検知する車輪検知センサ２９ａ及び２９ｂと前記カメラ、照明、各センサ等を制御するための撮像制御部１０５からなる。   In addition, the imaging unit 102 includes a camera 23 that captures the wheels, an illumination 24 that irradiates the wheels with light at a predetermined timing, wheel detection sensors 29a and 29b that detect the passage of the wheels at predetermined positions, the cameras, and the illumination. The imaging control unit 105 for controlling each sensor and the like.

各制御部にはこの他に、車両進入検知センサ、車両退出検知センサの信号及び列車編成番号等の車両情報を受信するための受信器から信号を取り込むようになっている。   In addition to this, each control unit receives signals from a receiver for receiving vehicle information such as a vehicle approach detection sensor, a vehicle exit detection sensor signal, and a train formation number.

情報処理装置１０３では、距離測定装置１０１のデータと撮像装置１０２からの画像情報を併合し車輪形状を求め、車両編成番号、計測日時を加えて保存する機能を有している。また、異常摩耗を起した車輪を検出する機能に加え、異常摩耗の車輪を検出すると警報を発すると共に、摩耗状態から車輪の寿命時期を予測する機能と、それを監視者に報知する機能を備えている。また、車輪の切削時期のデータを自動生成する機能を備えている。   The information processing device 103 has a function of combining the data of the distance measuring device 101 and the image information from the imaging device 102 to obtain a wheel shape, and adding and storing the vehicle organization number and the measurement date and time. In addition to the function to detect the wheel that has caused abnormal wear, it has a function to issue a warning when a wheel with abnormal wear is detected, to predict the life time of the wheel from the worn state, and to notify the supervisor of this. ing. It also has a function of automatically generating wheel cutting timing data.

次にそれぞれの動作を説明する。   Next, each operation will be described.

まず、計測位置に車両の進入を車両進入検知センサ２５ａ又は２５ｂが検知すると、その検知信号に基づいて、車輪進入検知センサ２７ａ及び２７ｂ、車輪退出検知センサ２８ａ及び２８ｂ車輪検知センサ２９ａ及び２９ｂが起動され、車輪の有無の検出を開始する。同時に第１距離センサ２１及び第２距離センサ２２が起動され計測可能状態に、車輪撮影用のカメラ２３が撮影可能状態になる。この状態で、車輪進入検知センサ２７ａ及び２７ｂが車輪を検知すると、第１距離センサ２１、第２距離センサ２２は計測を開始し、車輪退出検知センサ２８ａ及び２８ｂが車輪を検出すると計測を終了する。   First, when the vehicle entry detection sensor 25a or 25b detects the vehicle entering the measurement position, the wheel entry detection sensors 27a and 27b, the wheel exit detection sensors 28a and 28b, and the wheel detection sensors 29a and 29b are activated based on the detection signals. Then, detection of the presence or absence of wheels is started. At the same time, the first distance sensor 21 and the second distance sensor 22 are activated to enable measurement, and the wheel photographing camera 23 is ready for photographing. In this state, when the wheel approach detection sensors 27a and 27b detect the wheel, the first distance sensor 21 and the second distance sensor 22 start measurement, and when the wheel exit detection sensors 28a and 28b detect the wheel, the measurement ends. .

計測データは距離測定制御部１０４のメモリに取り込まれる。取り込んだ計測データは、距離測定制御部１０４で演算処理され、フランジの各部位の位置とフランジ厚さを計算する。このとき、計測開始から終了までの時間から車両速度を計算し前記計算に用いている。また、車両検知センサ２９ａ、及び２９ｂが車輪を検知すると、照明２４を発光させカメラ２３が車輪の撮影を行い、撮影した画像を撮像制御部１０５のメモリに取り込む。取り込んだ画像データは、撮像制御部１０５で画像処理され、踏面、フランジの相対的な位置関係を計算する。距離測定制御部１０４で計算されたフランジの各部位の位置とフランジ厚さ１１０、撮像制御部１０５で計算された踏面、フランジの相対的な位置関係１１１は、情報処理装置０３に転送される。転送されたデータは、情報処理装置１０３で併合し車輪形状を求める。   The measurement data is taken into the memory of the distance measurement control unit 104. The acquired measurement data is processed by the distance measurement control unit 104, and the position of each part of the flange and the flange thickness are calculated. At this time, the vehicle speed is calculated from the time from the start to the end of the measurement and used for the calculation. Further, when the vehicle detection sensors 29 a and 29 b detect the wheel, the illumination 24 emits light, the camera 23 captures the wheel, and the captured image is taken into the memory of the imaging control unit 105. The captured image data is subjected to image processing by the imaging control unit 105, and the relative positional relationship between the tread and the flange is calculated. The position and flange thickness 110 of each part of the flange calculated by the distance measurement control unit 104, and the relative positional relationship 111 of the tread and the flange calculated by the imaging control unit 105 are transferred to the information processing device 03. The transferred data is merged by the information processing apparatus 103 to obtain the wheel shape.

図５に第１距離センサ２１、第２距離センサ２２の出力波形を示す。   FIG. 5 shows output waveforms of the first distance sensor 21 and the second distance sensor 22.

第１距離センサ２１は、図５（ａ）に示すフランジ外面のＢ−Ｃ間の部分、車輪の外側の面のＣ−Ｄ間の部分、及びフランジ外面のＤ−Ｅ間の部分までの距離Ｌ３を計測する。第１距離センサ２１からの出力波形は、図５（ｃ）に示すような波形である。第２距離センサ２２は図５（ａ）に示す車輪内面のＡ−Ｆ間の部分までの距離Ｌ４（図５（ｂ））を計測する。第１距離センサ２１で計測した距離Ｌ３及び第２距離センサ２２で計測した距離Ｌ４から、フランジ厚さｄは数１〜３で算出できる。The first distance sensor 21 is a distance to a portion between B and C on the outer surface of the flange, a portion between C and D on the outer surface of the wheel, and a portion between D and E on the outer surface of the flange shown in FIG. L3 is measured. The output waveform from the first distance sensor 21, a waveform as shown in FIG. 5 (c). The second distance sensor 22 measures a distance L4 (FIG. 5B) to the portion between A and F on the inner surface of the wheel shown in FIG . From the distance L3 measured by the first distance sensor 21 and the distance L4 measured by the second distance sensor 22 , the flange thickness d can be calculated by Equations 1-3.

ｄ＝Ｌ０−（Ｌ１＋Ｌ２） 数１
Ｌ１＝Ｌ３＊ｓｉｎθ１ 数２
Ｌ２＝Ｌ４＊ｓｉｎθ２ 数３
ここで、ｄ，Ｌ０，Ｌ１，Ｌ２Ｌ３，Ｌ４，θ１，θ２はそれぞれ図３に示した距離や角度である。 d = L0− (L1 + L2) number 1
L1 = L3 * sin θ1 number 2
L2 = L4 * sin θ2 number 3
Here, d, L0, L1, L2L3, L4, θ1, and θ2 are the distance and angle shown in FIG. 3, respectively.

また図５（ｂ）で示す第２距離センサ２２の出力波形における立ち上がりから立ち下りまでの距離Ｌｆをその経過時間と車両速度から求め、車輪基準溝間横断距離Ｌｓを第２距離センサ２２の出力波形上の車輪基準溝を示すＧ点からＨ点までの経過時間と車両速度から求め、既知である車輪基準溝の直径Ｗｓ及び第２距離センサ２２で計測した距離Ｌ４と設置角度θ２とその設置高さｈＧより、車輪径Ｗｄおよび車輪フランジ高さｆｈは数４〜９で算出できる。Further, the distance Lf from the rising to the falling in the output waveform of the second distance sensor 22 shown in FIG. 5B is obtained from the elapsed time and the vehicle speed, and the wheel reference groove crossing distance Ls is output from the second distance sensor 22. The wheel reference groove diameter Ws, the distance L4 measured by the second distance sensor 22, the installation angle θ2, and the installation thereof are obtained from the elapsed time from the G point to the H point indicating the wheel reference groove on the waveform and the vehicle speed. From the height hG, the wheel diameter Wd and the wheel flange height fh can be calculated by equations 4-9.

Figure 0004319606
Figure 0004319606
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 図６に距離センサで計測した車輪形状プロフィールの例を示す。距離計測部１０１では、図６にフランジ部分の形状を前述の計算により算出する。しかし、踏面部分については第１距離センサと踏面の角度が平行に近い角度であることから、正確に形状を計測することは困難である。
Figure 0004319606
Figure 0004319606
Figure 0004319606
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Figure 0004319606
Figure 0004319606
 FIG. 6 shows an example of a wheel shape profile measured by a distance sensor. In the distance measuring unit 101, the shape of the flange portion shown in FIG. However, it is difficult to accurately measure the shape of the tread portion because the angle between the first distance sensor and the tread surface is almost parallel.

一方、撮像制御部１０５によって取り込まれた画像はエッジ抽出処理を行い、図７に示すように視野内でのフランジ、踏面のエッジ位置３０１を抽出できる。   On the other hand, the image captured by the imaging control unit 105 is subjected to edge extraction processing, and the flange position and the tread edge position 301 in the field of view can be extracted as shown in FIG.

情報処理装置１０３では、フランジの頂点３０２、フランジ外側面と踏面の接点３０３、フランジと踏面に渡る曲線部分の１次微分の最大点３０４等を基準点として、距離測定制御部１０４で計測した車輪形状プロフィールを基準にして、撮像制御部１０５で画像処理して抽出したエッジ位置を併合して、図８に示すような車輪形状プロフィールを作成する。作成した車輪形状プロフィールは車両編成番号、車輪番号、測定日時等のデータと共に情報処理装置１０３に設けてある記憶部に格納される。また、情報処理装置１０３は作成した車輪形状プロフィールから、各部の摩耗上状態を検出して、それぞれの部位において所定の値以上の摩耗量となっている場合は、警報を発するようになっている。すなわち、報処理装置には距離センサと撮像装置のデータとを合成して車輪形状を求めるデータ合成部と、求めた車輪形状から新生車輪又は切削後の車輪データと比較して摩耗状態を検出する摩耗量検出部とを備える。さらに、情報処理装置では、以前に測定、記憶してある同一の車両編成番号の同一の車輪番号のデータと比較して、車輪の寿命予測を行い、その結果を報知できるようにしてある。In the information processing apparatus 103, the wheel measured by the distance measurement control unit 104 using the vertex 302 of the flange, the contact point 303 between the flange outer surface and the tread surface, the maximum point 304 of the first derivative of the curved portion extending over the flange and the tread surface, etc. A wheel shape profile as shown in FIG. 8 is created by merging the edge positions extracted by image processing by the imaging control unit 105 on the basis of the shape profile. The created wheel shape profile is stored in a storage unit provided in the information processing apparatus 103 together with data such as a vehicle organization number, a wheel number, and a measurement date. In addition, the information processing apparatus 103 detects an on-wear state of each part from the created wheel shape profile, and issues a warning when the wear amount is a predetermined value or more in each part. . That is, the information processing device combines the data of the distance sensor and the imaging device to determine the wheel shape, and detects the wear state by comparing the calculated wheel shape with the new wheel or the wheel data after cutting. A wear amount detector. Further, the information processing apparatus is configured to predict the life of the wheel by comparing with the data of the same wheel number of the same vehicle formation number that has been measured and stored in advance and notify the result.

以上のように、本発明では車輪のフランジ部の寸法及び形状を高精度に計測できる距離測定装置のデータと、車輪踏面状態（形状）を精度良く検出できる撮像装置のデータとを用いて、車輪踏面形状・寸法を高精度に求めて、その求めた形状・寸法から車輪のフランジ部と踏面の摩耗量を求めることで、車輪踏面の凹摩耗も確実に検出できものである。   As described above, in the present invention, a wheel is obtained using data of a distance measuring device capable of measuring the size and shape of the flange portion of the wheel with high accuracy and data of an imaging device capable of accurately detecting a wheel tread surface state (shape). By determining the shape and dimensions of the tread with high accuracy and determining the wear amount of the flange portion and the tread of the wheel from the determined shape and dimensions, the concave wear of the wheel tread can be reliably detected.

車輪の断面を示す図である。It is a figure which shows the cross section of a wheel. 車輪形状測定装置の全体構成を示す図である。It is a figure showing the whole wheel shape measuring device composition. 車輪形状測定装置のセンサ配置及びカメラ配置の詳細を示す図である。It is a figure which shows the detail of sensor arrangement | positioning and camera arrangement | positioning of a wheel shape measuring apparatus. 車輪形状測定装置の制御システム構成を示す図である。It is a figure which shows the control system structure of a wheel shape measuring apparatus. 距離センサの測定位置と出力波形を示す図である。It is a figure which shows the measurement position and output waveform of a distance sensor. 距離センサで計測した車輪形状プロフィールを示す図である。It is a figure which shows the wheel shape profile measured with the distance sensor. 画像処理で抽出したエッジ位置を示す図である。It is a figure which shows the edge position extracted by image processing. 車輪形状プロフィールを示す図である。It is a figure which shows a wheel shape profile.

符号の説明Explanation of symbols

１…車輪、２…レール、１１…車輪の外側、１２…車輪の内側、１３…踏面、１４…フランジ、１５…基準溝、１６…フランジ外側面、１７…フランジ内側面、２１…第１距離センサ、２２…第２距離センサ、２３…カメラ、２４…照明、２５ａ…車両進入検知センサ受光器、２５ｂ…車両進入検知センサ投光器、２６ａ…車両退出センサ受光器、２６ｂ…車両退出センサ投光器、２７ａ…車両進入検知センサ受光器、２７ｂ…車両進入検知センサ投光器、２８ａ…車両退出センサ受光器、２８ｂ…車両退出センサ投光器、２９ａ…車輪検知センサ受光器、２９ｂ…車両退出センサ投光器、３０…車両情報受信器、１０１…距離測定部、１０２…撮像部、１０３…情報処理装置、１０４…距離測定制御装置、１０５…撮像制御装置、１１０…距離測定部計測データ、１１１…撮像データ、１１２…車輪プロフィール、３０１…踏面エッジ位置、３０２…フランジ頂点、３０３…フランジ外側面と踏面の接点、３０４…フランジと踏面に渡る曲線の１次微分最大点。
DESCRIPTION OF SYMBOLS 1 ... Wheel, 2 ... Rail, 11 ... Outside of wheel, 12 ... Inside of wheel, 13 ... Tread surface, 14 ... Flange, 15 ... Reference groove, 16 ... Flange outer surface, 17 ... Flange inner surface, 21 ... First distance Sensor, 22 ... 2nd distance sensor, 23 ... Camera, 24 ... Illumination, 25a ... Vehicle entry detection sensor receiver, 25b ... Vehicle entry detection sensor projector, 26a ... Vehicle exit sensor receiver, 26b ... Vehicle exit sensor projector, 27a ... vehicle entry detection sensor receiver, 27b ... vehicle entry detection sensor projector, 28a ... vehicle exit sensor receiver, 28b ... vehicle exit sensor projector, 29a ... wheel detection sensor receiver, 29b ... vehicle exit sensor projector, 30 ... vehicle information Receiver 101: Distance measuring unit 102 ... Imaging unit 103 ... Information processing device 104 ... Distance measurement control device 105 ... Imaging control device 110 ... Separation measuring unit measurement data, 111 ... imaging data, 112 ... wheel profile, 301 ... tread edge position, 302 ... flange apex, 303 ... contact between flange outer surface and tread, 304 ... first-order differential maximum of curve over flange and tread point.

Claims (3)

鉄道車両の車輪踏面形状を計測して、フランジの磨耗量や踏面の磨耗状態を検査する車輪形状測定装置において、
走行する車輪にレーザ光を照射し、その反射光より前記フランジの形状を計測する距離センサを備えた距離測定装置と、
車輪踏面および前記フランジを撮像して前記車輪踏面と前記フランジの相対的な位置関係を計測する撮像装置と、
前記車輪の所定点を基準点として、前記距離測定装置で計測された前記フランジの形状と前記撮像装置で計測された前記相対的な位置関係とを合成して前記フランジおよび前記 踏面の形状を計測する情報処理装置と、
を有することを特徴とする車輪形状測定装置。In a wheel shape measuring device that measures the wheel tread shape of a railway vehicle and inspects the wear amount of the flange and the tread surface,
A distance measuring device comprising a distance sensor for irradiating a traveling wheel with laser light and measuring the shape of the flange from the reflected light;
An imaging device for measuring a relative positional relationship between the flange and the wheel tread by imaging the wheel tread and the flange,
Using the predetermined point of the wheel as a reference point, the shape of the flange measured by the distance measuring device and the relative positional relationship measured by the imaging device are combined to measure the shape of the flange and the tread surface. An information processing device to
A wheel shape measuring device comprising: 請求項１に記載の車上形状測定装置において、
前記情報処理装置には前記距離センサと前記撮像装置のデータとを合成して車輪形状を求めるデータ合成部と、求めた車輪形状から新生車輪又は切削後の車輪データとを比較して磨耗状態を検出する磨耗量検出部とを備えたことを特徴とする車輪形状測定装置。The on-vehicle shape measuring device according to claim 1,
The information processing device combines the data of the distance sensor and the imaging device to obtain a wheel shape, and compares the new wheel or the wheel data after cutting from the obtained wheel shape to determine the wear state. A wheel shape measuring device comprising a wear amount detecting unit for detecting . 請求項２に記載の車上形状測定装置において、
前記情報処理装置に表示部を設け、前記表示部に前記合成部で合成した車輪について、車両番号や車輪番号と一緒にプロフィールを表示すると共に、磨耗状態を表示することを特徴とする車両形状測定装置。 The on-vehicle shape measuring device according to claim 2,
A vehicle shape measurement characterized in that a display unit is provided in the information processing device, and a profile is displayed together with a vehicle number and a wheel number for a wheel synthesized by the synthesis unit on the display unit and a wear state is displayed. apparatus.
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