JP3086425B2 - Railcar wheelset and bogie attitude detection method - Google Patents
Railcar wheelset and bogie attitude detection methodInfo
- Publication number
- JP3086425B2 JP3086425B2 JP08357103A JP35710396A JP3086425B2 JP 3086425 B2 JP3086425 B2 JP 3086425B2 JP 08357103 A JP08357103 A JP 08357103A JP 35710396 A JP35710396 A JP 35710396A JP 3086425 B2 JP3086425 B2 JP 3086425B2
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- Prior art keywords
- wheel
- rail
- distance
- bogie
- sensor
- Prior art date
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、輪軸及び台車のレ
ールに対する位置及び角度を明らかにすることにより、
輪軸及び台車の姿勢を検知する方法に関する。BACKGROUND OF THE INVENTION The present invention relates to a method for determining the positions and angles of wheels and bogies with respect to rails.
The present invention relates to a method for detecting a posture of a wheel axle and a bogie.
【０００２】[0002]
【従来の技術】鉄道車両用台車における台車の姿勢は、
車両の走行性能に大きく影響する。すなわち、操縦用の
ハンドルを持たない鉄道車両の台車は、曲線をスムーズ
に通過するために、車輪の踏面は、例えば円すい形など
の形状をしている。また、輪軸は、あたかも自動車のタ
イヤがカーブを曲がるとき進行方向に対し角度を持つの
と同様に、軌道に沿うように角度を保とうとする。この
ため、車輪の踏面形状がくずれたり、輪軸の動きを阻害
するような台車構造であれば、曲線での走行性能が損な
われ、車輪フランジ直摩、きしり音、レールの波状摩耗
が発生し、脱線する危険性もある。2. Description of the Related Art The attitude of a bogie in a bogie for a railcar is
It greatly affects the running performance of the vehicle. In other words, the bogie of a railway vehicle without a steering wheel has a tread shape of a wheel, for example, in a conical shape in order to smoothly pass through a curve. Also, the wheel set tends to keep the angle along the track, as if the wheel of the car had an angle to the direction of travel when turning a curve. For this reason, if the tread shape of the wheels is distorted or the bogie structure interferes with the movement of the axle, running performance on curves will be impaired, wheel flange direct friction, squeak noise, rail wavy wear will occur, There is a risk of derailment.
【０００３】また、直線走行においては、左右の車輪が
軌道に対し平行に、台車として組立てられていて、初め
て台車は直進することができるが、組立ての不具合によ
り車輪が軌道に対して角度を持つ場合には直進すること
ができず、偏り走行し車輪フランジがレールに当たりな
がら走行する。このため、車輪、レールが摩耗する。Also, in straight running, the right and left wheels are assembled as a bogie parallel to the track, and the bogie can go straight for the first time, but the wheels have an angle to the track due to assembly failure. In such a case, the vehicle cannot travel straight, and travels on an uneven road while the wheel flanges hit the rails. For this reason, wheels and rails are worn.
【０００４】鉄道車両における輪軸及び台車のレールに
対する傾き、輪軸の横ずれ、すなわち姿勢は車両の走行
性能に大きく影響する。そのため、従来から台車の姿勢
を測定し、輪軸及び台車のレールに対する傾き、輪軸の
横ずれ等が生じている場合には、正しい姿勢が得られる
ように補修していた。[0004] The inclination of the wheel set and the bogie relative to the rails and the lateral displacement of the wheel set, ie, the attitude of the railcar, greatly affect the running performance of the vehicle. For this reason, the posture of the bogie has been conventionally measured, and in the case where the inclination of the wheel axle and the bogie with respect to the rail, the lateral displacement of the wheel axle, and the like have occurred, repairs have been made so that the correct posture can be obtained.
【０００５】従来の台車姿勢を測定する一般的な方法
は、車体側で台車のボギー角及び台車と輪軸との相対角
度を測定し、車体は軌道に対して定位置にあるものと仮
定して台車の姿勢を推定していた。A conventional general method of measuring the attitude of a bogie is to measure the bogie angle of the bogie and the relative angle between the bogie and the wheel axle on the vehicle body side, and assuming that the vehicle body is at a fixed position with respect to the track. The dolly attitude was estimated.
【０００６】[0006]
【発明が解決しようとする課題】前記従来の一般的な方
法では、仮定に基づく推定値であるという欠点があり、
また測定方法や計算方法が複雑であった。The above-mentioned conventional general method has a drawback that it is an estimated value based on an assumption.
Moreover, the measuring method and the calculating method were complicated.
【０００７】本発明は、前記従来法に見られる欠点を除
く目的で、軌道外に設置した測定装置により側面からレ
ール上を通過する車輪の姿勢を測定する方法を提供する
ものである。The present invention provides a method for measuring the attitude of a wheel passing over a rail from the side using a measuring device installed outside a track for the purpose of eliminating the disadvantages found in the conventional method.
【０００８】[0008]
【課題を解決するための手段】前記目的を達成するた
め、本発明による鉄道車両用輪軸の姿勢検知方法は、レ
ールから一定の距離離れた位置に、レール側面までの距
離Ｌ3を測定するセンサ３と、該センサを挟んで等間隔
の左右位置に車輪の側面までの距離Ｌ1、Ｌ2を測定する
一対のセンサ１、２を対設した測定装置をレールに沿っ
て軌道外に設け、該測定装置前を通過する車両の各車輪
について、車輪側面までの距離Ｌ1、Ｌ2及びレール側面
までの距離Ｌ3を測定し、該測定値を演算機に入力し、
予め入力してある車輪側面までの基準値Ｌ1a、Ｌ2a及び
レール側面までの基準値Ｌ3aと比較演算して変位量を算
出し、輪軸のレールに対する位置と角度を求めることに
より輪軸の姿勢を検知することを特徴とする。To achieve the above object, according to an aspect of the posture detection method wheelset for railway vehicles according to the present invention, a certain distance away from the rail, a sensor for measuring a distance L 3 to the rail side surface 3 and a pair of sensors 1 and 2 for measuring the distances L 1 and L 2 to the side surface of the wheel at equal left and right positions with the sensor interposed therebetween, and a measuring device provided outside the track along the rail, For each wheel of the vehicle passing in front of the measuring device, the distances L 1 and L 2 to the wheel side surfaces and the distance L 3 to the rail side surfaces are measured, and the measured values are input to a calculator.
By calculating the amount of displacement by comparing with the reference values L 1a and L 2a to the side of the wheel and the reference value L 3a to the side of the rail which have been input in advance, the position and angle of the wheel set with respect to the rail are obtained. Is detected.
【０００９】また、本発明による鉄道車両用台車の姿勢
検知方法は、レールから一定の距離離れた位置に、レー
ル側面までの距離Ｌ3を測定するセンサ３と、該センサ
を挟んで等間隔の左右位置に車輪の側面までの距離
Ｌ1、Ｌ2を測定する一対のセンサ１、２を対設した一対
の測定装置を、台車の固定軸距の間隔をもってレールに
沿って軌道外に設け、走行している台車の前輪軸と後輪
軸のそれぞれの車輪側面までの距離Ｌ1、Ｌ2及びレール
側面までの距離Ｌ3を同時に測定し、該測定値を演算機
に入力し、予め入力してある車輪側面までの基準値
Ｌ1a、Ｌ2a及びレール側面までの基準値Ｌ3aと比較演算
して変位量を算出し、前輪軸と後輪軸のレールに対する
位置と角度を求めることにより台車の姿勢を検知するこ
とを特徴とする。Further, the method of detecting the attitude of a bogie for a railway vehicle according to the present invention comprises a sensor 3 for measuring a distance L 3 to a side surface of a rail, and a sensor 3 for measuring the distance L 3 to the side of the rail at a predetermined distance from the rail. A pair of measuring devices provided with a pair of sensors 1 and 2 for measuring distances L 1 and L 2 to the side surfaces of the wheels at the left and right positions are provided outside the track along the rail with a distance of a fixed wheelbase of the bogie, The distances L 1 and L 2 to the respective wheel side surfaces of the front axle and the rear axle of the traveling bogie are measured simultaneously, and the distances L 3 to the side surfaces of the rail are measured. The reference values L 1a , L 2a to the side of the wheel and the reference value L 3a to the side of the rail are calculated to calculate the amount of displacement, and the positions and angles of the front wheel axle and the rear wheel axle with respect to the rail are calculated. It is characterized by detecting the posture.
【００１０】[0010]
【発明の実施の形態】図１（Ａ）、図２に示すセンサ１
と車輪９の側面までの距離をＬ1、センサ２と車輪９の
側面までの距離をＬ2、センサ３とレール８の側面まで
の距離をＬ3とし、センサ１とセンサ２のビームスポッ
ト間隔をｂとした場合、車輪のアタック角θ（車輪のレ
ールに対する角度）は下記１式で、車輪の左右変位Ｙは
２式で表される。これにより、輪軸のレールに対する位
置と角度を知ることができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sensor 1 shown in FIGS.
The distance between the sensor 1 and the side of the rail 9 is L 1 , the distance between the sensor 2 and the side of the wheel 9 is L 2 , the distance between the sensor 3 and the side of the rail 8 is L 3, and the beam spot interval between the sensor 1 and the sensor 2 Where b is the attack angle θ of the wheel (the angle of the wheel with respect to the rail) is expressed by the following equation, and the lateral displacement Y of the wheel is expressed by the following equation. Thereby, the position and angle of the wheelset with respect to the rail can be known.
【００１１】 θ＝ｔａｎ-1（Ｌ1−Ｌ2）／ｂ １式 Ｙ＝（Ｌ1＋Ｌ2）／２−Ｌ3 ２式[0011] θ = tan -1 (L 1 -L 2) / b 1 expression Y = (L 1 + L 2 ) / 2-L 3 2 Formula
【００１２】ただし、測定する前に、図２に示すように
車輪がレール上の中立位置にあるとして作成された校正
治具１１で、この校正治具１１が設置されたときのセン
サ１と車輪の側面までの距離Ｌ1a、センサ２と車輪の側
面までの距離Ｌ2a及びセンサ３とレール側面までの距離
Ｌ3aを測定し、基準値として演算機に入力しておく。However, before the measurement, as shown in FIG. 2, a calibration jig 11 prepared assuming that the wheel is at a neutral position on the rail, and the sensor 1 and the wheel when the calibration jig 11 is installed distance L 1a of up side, the distance L 3a to distance L 2a and the sensor 3 and the rail side to the side surface of the sensor 2 and the wheel is measured, previously input to the arithmetic unit as a reference value.
【００１３】台車のレールに対する姿勢を測定するに
は、図３に示すように前記と同じ構成の一対の測定装置
６、７を台車の固定軸距Ｓだけ離して設置し、前後輪軸
の位置と角度を同時に測定して行われる。In order to measure the attitude of the truck with respect to the rail, as shown in FIG. 3, a pair of measuring devices 6 and 7 having the same configuration as above are installed at a distance of a fixed shaft distance S of the truck, and the positions of the front and rear wheel axles are determined. This is done by measuring the angles simultaneously.
【００１４】前記のごとく、測定装置は軌道側に設置さ
れるため、その測定装置前を通過する全ての台車の姿勢
を明らかにすることができる。また、地上から車輪リム
面までの距離とレール頭部までの距離を測定することに
より、車輪のフランジ直摩量を測定できる。更に、１台
車の前後輪軸８か所（各車輪に対し２か所）で同時に車
輪リム部の距離を測定することにより、前輪軸の４か所
と後輪軸の４か所の距離のそれぞれの変位より、輪軸の
軸距狂い、通り狂いを管理することができる。As described above, since the measuring device is installed on the track side, it is possible to clarify the postures of all trucks passing in front of the measuring device. Also, by measuring the distance from the ground to the wheel rim surface and the distance to the rail head, the amount of direct flange wear of the wheel can be measured. Furthermore, by simultaneously measuring the distances of the wheel rims at eight front and rear axles (two locations for each wheel) of the bogie, the distances of the four locations of the front axle and the four locations of the rear axle are respectively measured. From the displacement, it is possible to manage the wheelbase misalignment and misalignment.
【００１５】[0015]
実施例１ 図１（Ａ）（Ｂ）、図２に示すように、レール側面まで
の距離Ｌ3を測定するセンサ３と、該センサを挟んで等
間隔の左右位置に車輪の側面までの距離Ｌ1、Ｌ2を測定
する一対のセンサ１、２を対設し、それぞれのセンサを
支台４に植立した支柱５1、５2、５3上に取着した測定
装置をレール８に沿って軌道外に設け、センサからの検
知信号を演算機に入力し、比較演算して変位量をグラフ
や表として表示すると共に、台車の姿勢図を描くことに
より台車の姿勢を知ることができる。Example 1 As shown in FIGS. 1 (A), 1 (B) and 2, a sensor 3 for measuring a distance L 3 to a side surface of a rail, and a distance to a side surface of a wheel at right and left positions at equal intervals across the sensor. A pair of sensors 1 and 2 for measuring L 1 and L 2 are provided in a pair, and a measuring device mounted on columns 5 1 , 5 2 and 5 3 having the sensors mounted on a support 4 is mounted on a rail 8. Along the outside of the track, input the detection signal from the sensor to the calculator, compare and calculate and display the displacement amount as a graph or table, and draw the cart's posture diagram to know the cart's posture .
【００１６】実施例２ 本発明の実施により台車の姿勢を測定する方法を図３に
より説明する。実施例１に示す測定装置と同じ構成の一
対の測定装置６、７を軸距Ｓの距離をおいてレール８に
沿って軌道外に設置する。この装置により、前後車輪９
がそれぞれ測定装置６、７に対向する位置に台車１０が
きたとき、その測定値が演算機に入力され、比較演算し
て変位量を算出し、前後輪軸の位置と角度を求めること
により、台車の姿勢が判断される。Embodiment 2 A method for measuring the attitude of a bogie according to the present invention will be described with reference to FIG. A pair of measuring devices 6 and 7 having the same configuration as the measuring device shown in the first embodiment are installed outside the track along the rail 8 with a distance of the shaft distance S. With this device, the front and rear wheels 9
When the bogie 10 comes to a position facing the measuring devices 6 and 7, respectively, the measured values are input to a calculator, the displacement is calculated by comparison, and the position and angle of the front and rear wheel sets are obtained. Is determined.
【００１７】実施例３ 図３に示すように、測定装置６、７を軸距Ｓの距離をお
いてレール８に沿って軌道外に設置して、１台車の前後
輪軸のセンサからの距離Ｌ1、Ｌ2、Ｌ3を測定し、基準
値と比較して偏位量Ｌc1、Ｌc2、Ｌc3を算出した。その
結果を図４に示す。読み取りは同一時間軸上で波形が重
なった点Ａ、Ｂ、Ｃ位置で基線（校正治具での零値）か
らの値で示した。Third Embodiment As shown in FIG. 3, the measuring devices 6 and 7 are installed outside the track along the rail 8 at a distance of the shaft distance S, and the distance L from the sensor of the front and rear axles of one bogie is measured. 1 , L 2 and L 3 were measured and compared with reference values to calculate deviation amounts L c1 , L c2 and L c3 . FIG. 4 shows the results. The readings were shown at the points A, B, and C where the waveforms overlap on the same time axis by values from the baseline (zero value on the calibration jig).
【００１８】前記偏位量Ｌc1、Ｌc2、Ｌc3から車輪の左
右変位Ｙとアタック角θを求めた。その結果を表１に示
す。The lateral displacement Y and the attack angle θ of the wheel were determined from the deviation amounts L c1 , L c2 and L c3 . Table 1 shows the results.
【００１９】[0019]
【表１】 [Table 1]
【００２０】前記表１の計算結果に基づいて、台車の姿
勢を図示すると図５のようになる。FIG. 5 shows the posture of the bogie based on the calculation results of Table 1 above.
【００２１】[0021]
【発明の効果】本発明の実施によれば、鉄道車両用台車
の現実の姿勢を明らかにすることができる。この結果に
より、台車の姿勢に関係する車両及び軌道の諸問題を解
決する手段を見いだすことができる。また、測定装置前
を通過する全ての台車について、その姿勢を明らかにす
ることにより、台車の組立て精度や車輪踏面の摩耗等の
検査に使用することにより、台車の補修をより完全なも
のにすることができる。According to the present invention, the actual posture of the bogie for a railway vehicle can be clarified. As a result, it is possible to find a means for solving various vehicle and track problems related to the posture of the bogie. In addition, by clarifying the posture of all bogies passing in front of the measuring device, it can be used for inspection of the assembling accuracy of the bogies and wear of the wheel treads, etc., so that the bogies can be repaired more completely. be able to.
【図１】本発明の実施において使用する測定装置の一例
を示す説明図で、（Ａ）は正面図、（Ｂ）はその設置か
所におけるレールと車輪の一部を示す断面図である。FIG. 1 is an explanatory view showing an example of a measuring device used in the embodiment of the present invention. FIG. 1 (A) is a front view, and FIG. 1 (B) is a cross-sectional view showing a part of rails and wheels at the installation location.
【図２】図１（Ａ）の測定装置とこれに相対するレール
部分を拡大し、かつ基準測定を行なうための校正治具を
レール上に装着した状態の説明図である。FIG. 2 is an explanatory view of a state in which a measuring device of FIG. 1 (A) and a rail portion facing the measuring device are enlarged, and a calibration jig for performing reference measurement is mounted on the rail.
【図３】台車の姿勢を測定するための測定装置を軌道外
に設置した場合の説明図で、（Ａ）は平面図、（Ｂ）は
正面図である。3A and 3B are explanatory views of a case where a measuring device for measuring a posture of a bogie is installed outside a track, wherein FIG. 3A is a plan view and FIG. 3B is a front view.
【図４】本発明の実施による測定結果に基づく１台車の
前後輪軸の変位量を示すグラフである。FIG. 4 is a graph showing the amount of displacement of the front and rear wheel axles of one bogie based on the measurement results according to the implementation of the present invention.
【図５】図４に示す変位量をもとに算出された車輪の左
右変位Ｙ、アタック角θにより台車の姿勢を示した説明
図である。FIG. 5 is an explanatory diagram showing the attitude of the bogie based on the lateral displacement Y of the wheels and the attack angle θ calculated based on the displacement amounts shown in FIG. 4;
１、２、３ センサ ４ 支台 ５1、５2、５3 支柱 ６、７ 測定装置 ８ レール ９ 車輪 １０ 台車 １１ 校正治具 ｂ 間隔 1 , 2 , 3 Sensor 4 Abutment 5 1 , 5, 2 and 5 3 Column 6, 7 Measuring device 8 Rail 9 Wheel 10 Dolly 11 Calibration jig b Interval
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鳥居 修 大阪府大阪市此花区島屋５丁目１番109 号 住友金属工業株式会社関西製造所製 鋼品事業所内 (72)発明者 谷本 益久 大阪府大阪市此花区島屋５丁目１番109 号 住友金属テクノロジー株式会社内 (72)発明者 宮内 栄二 大阪府大阪市此花区島屋５丁目１番109 号 住友金属テクノロジー株式会社内 審査官 柴田 和雄 (56)参考文献 特開 平８−122042（ＪＰ，Ａ) 特開 平７−243845（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01B 21/22 G01B 11/00 - 11/30 G01B 5/00 - 5/30 ──────────────────────────────────────────────────の Continuing on the front page (72) Osamu Torii Inventor: 5-1-1109, Shimaya, Konohana-ku, Osaka-shi, Osaka, Japan Steel Works, Kansai Works, Sumitomo Metal Industries, Ltd. (72) Inventor: Masuhisa Tanimoto Osaka Sumitomo Metal Technology Co., Ltd., 5-1-1109 Shimaya, Konohana-ku, Osaka (72) Inventor Eiji Miyauchi 5-1-1, Shimaya, Konohana-ku, Osaka, Osaka Sumitomo Metal Technology Co., Ltd.Examiner, Kazuo Shibata (56) References JP-A-8-124242 (JP, A) JP-A-7-243845 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G01B 21/22 G01B 11/00-11 / 30 G01B 5/00-5/30
Claims (2)
ール側面までの距離Ｌ3を測定するセンサ３と、該セン
サを挟んで等間隔の左右位置に車輪の側面までの距離Ｌ
1、Ｌ2を測定する一対のセンサ１、２を対設した測定装
置をレールに沿って軌道外に設け、該測定装置前を通過
する車両の各車輪について、車輪側面までの距離Ｌ1、
Ｌ2及びレール側面までの距離Ｌ3を測定し、該測定値を
演算機に入力し、予め入力してある車輪側面までの基準
値Ｌ1a、Ｌ2a及びレール側面までの基準値Ｌ3aと比較演
算して変位量を算出し、輪軸のレールに対する位置と角
度を求めることにより輪軸の姿勢を検知することを特徴
とする鉄道車両用輪軸の姿勢検知方法。To 1. A position from the rail away a certain distance, the distance between the sensor 3 that measures the distance L 3 to the rail side, to the side surface of the wheel at equal intervals of the right and left positions sandwiching the sensor L
A measuring device provided with a pair of sensors 1 and 2 for measuring 1 and L 2 is provided outside the track along the rail, and for each wheel of the vehicle passing in front of the measuring device, the distance L 1 to the side surface of the wheel is measured.
L 2 and measure the distance L 3 to the rail side, and enter the measured value to the computing device, the reference value L 1a to the wheel side are entered in advance, and the reference value L 3a to L 2a and rail side A method for detecting the attitude of a wheel set for a railway vehicle, comprising detecting a position of the wheel set by calculating a displacement amount by performing a comparison operation and obtaining a position and an angle of the wheel set with respect to a rail.
ール側面までの距離Ｌ3を測定するセンサ３と、該セン
サを挟んで等間隔の左右位置に車輪の側面までの距離Ｌ
1、Ｌ2を測定する一対のセンサ１、２を対設した一対の
測定装置を、台車の固定軸距の間隔をもってレールに沿
って軌道外に設け、走行している台車の前輪軸と後輪軸
のそれぞれの車輪側面までの距離Ｌ1、Ｌ2及びレール側
面までの距離Ｌ3を同時に測定し、該測定値を演算機に
入力し、予め入力してある車輪側面までの基準値Ｌ1a、
Ｌ2a及びレール側面までの基準値Ｌ3aと比較演算して変
位量を算出し、前輪軸と後輪軸のレールに対する位置と
角度を求めることにより台車の姿勢を検知することを特
徴とする鉄道車両用台車の姿勢検知方法。To 2. A from the rail away certain distance position, the distance between the sensor 3 that measures the distance L 3 to the rail side, to the side surface of the wheel at equal intervals of the right and left positions sandwiching the sensor L
1 , a pair of measuring devices provided with a pair of sensors 1 and 2 for measuring L2 are provided outside the track along the rails at intervals of the fixed wheelbase of the bogie, and the front wheel axle and the rear The distances L 1 , L 2 to the respective wheel side surfaces of the wheel axle and the distance L 3 to the rail side surface are simultaneously measured, and the measured values are input to a calculator, and a reference value L 1a previously input to the wheel side surfaces is input. ,
Railway vehicle L 2a and compared calculation with a reference value L 3a to the rail side to calculate the displacement amount, and detecting a posture of the carriage by determining the position and angle with respect to the rail of the front axle and rear axle For detecting the attitude of the cart.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08357103A JP3086425B2 (en) | 1996-12-25 | 1996-12-25 | Railcar wheelset and bogie attitude detection method |
| IDP971560A ID18780A (en) | 1996-10-31 | 1997-05-12 | METHOD OF SPINNING RING PRODUCTS FOR RING SPINNING MACHINES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08357103A JP3086425B2 (en) | 1996-12-25 | 1996-12-25 | Railcar wheelset and bogie attitude detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10185550A JPH10185550A (en) | 1998-07-14 |
| JP3086425B2 true JP3086425B2 (en) | 2000-09-11 |
Family
ID=18452400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08357103A Expired - Fee Related JP3086425B2 (en) | 1996-10-31 | 1996-12-25 | Railcar wheelset and bogie attitude detection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3086425B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5453130B2 (en) * | 2010-02-10 | 2014-03-26 | 東日本旅客鉄道株式会社 | Attack angle measuring device and measuring method |
| JP5749496B2 (en) * | 2011-01-07 | 2015-07-15 | 公益財団法人鉄道総合技術研究所 | Railway vehicle attack angle measuring apparatus and method |
| JP6644598B2 (en) * | 2016-03-23 | 2020-02-12 | 日本製鉄株式会社 | Method and apparatus for measuring the angle of attack between a wheel and a rail of a railway vehicle |
| CN110954045B (en) * | 2019-12-12 | 2021-08-03 | 西南交通大学 | Train wheel tread geometric parameter detection device |
-
1996
- 1996-12-25 JP JP08357103A patent/JP3086425B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10185550A (en) | 1998-07-14 |
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