JP3638724B2 - Overhead wire measuring device and crossover wire measuring method - Google Patents

Description

上式でＡは一定であり、θ３は１８０度からθ１＋θ２を引いたものである。従ってθ１とθ２を測ればＨがわかる。
またＳ１Ｓ２線中心垂線をＰＰとすると同図に於いて
【数２】

となる。従ってθ１，θ２の測定でｄも同時にわかる。点ＴがＰＰ線の上或いはその左側にある場合は、ｄが零になるか、負の数値になるかの違いだけである。従って附設のコンピューターにθ１，θ２を入力することによって即時Ｈとｄを算出可能であり、画像を目視することも出来る。
【０００４】
次に渡り線の測定を図２について述べる。ここでは両軸に投光筒と受光筒とを並列に設けた場合の実施例にもとづいて説明する。本線Ｔ１から側線Ｔ２を分岐させた場合、本線上で分岐点がわずかに通りすぎた位置にこの装置を定置し、まず前記の如く両投光筒を対向傾斜させてトロリ線Ｔ１についての角θ１，θ２を測定する。次に両投光筒を共に側線側へ傾斜させるとトロリ線Ｔ２に光軸が合って、同様にこの場合のθ１，θ２を測る。これにより本線Ｔ１，側線Ｔ２の高さと偏位を算出可能であり、高さに関しては図２の如く同一画像上で両線の高さと、高さ差ｈを見ることができる。ここで使用する光学系機器は、望遠レンズ系で構成しているので、測定対象までの距離が５ｍ位であれば特に焦点を合わせる必要はない。
連続性のある本線を基準に、側線の始端部を測定するのであるから、渡り線としての適否を端的に判定することが出来る。
【０００５】
【発明の実施の形態】
図３，図４について実施例を述べる。基板１は両レールＲ上へ渡しかけた短冊状枠体で、下部にタテ横１対のローラ１ａ，１ｂを備え、これによってレール上へ緊密に位置決めされ、レールに沿い移動可能である。基板１は中央から対称位置に１対の基軸２を軸支する。各基軸には受光筒４を固着してある。基軸には別にステッピングモータＭが設けてあって、受光筒４の光軸傾斜角度を検知可能としてある。受光筒の光センサは、センサ電圧の変化によって自然光のときの上部トロリ線の像影をとらえ、そのときの受光筒の角度を認識して電車線の位置、角度を検出する。
以上は測定環境が自然光の場合であるが、測定が終電車通過後の夜間作業になることが多いので、両軸に投光筒３を受光筒４と並列に固着し、これにレーザ光線をはじめ、ハロゲンランプ、発光ダイオード、白熱ランプ等の光源装置を内設する。図５は投光筒３と受光筒４とを併設したときの実施例を示す斜視図である。
投光筒の光源はトロリ線を照射し、受光筒でその反射光をとらえ、そのときの角度を検出する。
図２は本線Ｔ１から側線Ｔ２を分岐させた、いわゆる渡り線の測定を示すものであるが、両投光筒を対向傾斜させてトロリ線Ｔ１及び側線Ｔ２に光源を照射し、夫々に光軸が合ったときの角度θ１，θ２を測定する。これにより両線の高さと偏位が付設コンピュータ（図示せず）により算出可能である。また両線の高さと夫々の高さの差ｈは同一画像上で確認できる。
図６はセンサ電圧測定図の一例である。上の線Ａは一方の側の受光筒、下の線Ｂは他側受光筒によるもので、下向き突起は、夫々トロリ線を検知したときのものである。両突起の位置のズレは偏位の存在によるものであり、きざし波状起伏は風による揺れを示す。
両突起を生じたときの受光筒の傾斜角度値は直ちに付設のコンピュータに投入され、高さと偏位を即座に読取可能とする。装置をレールに沿うて移動させながら変化を連続的に読取ることも可能である。
【０００６】
【発明の効果】
トロリ線に触れることもなく高さと偏位を無理なく即座に知ることができる。渡り線についても本線上の同一位置で、本線側線両者の測定を行うことによって両者を対比可能とし、割り込み事故防止に貢献する。
【図面の簡単な説明】
【図１】本装置の原理説明図である。
【図２】渡り線測定の原理説明図である。
【図３】本装置の正面図である。
【図４】同平面図である。
【図５】投光筒と受光筒とを併設した斜視図である。
【図６】光センサ電圧の変化記録図である。
【符号の説明】
１ 基板
２ 基軸
３ 投光筒
４ 受光筒
Ｍ ステップモータ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable overhead wire measurement device that measures the height and displacement of a train line in a non-contact manner, and a method of using the device at a crossover location.
[0002]
[Problems to be solved by the invention]
Proper maintenance of the height and displacement of the trolley line is essential for the normal operation of electric railways. Conventionally, a rise-up type measuring instrument was used for both measurements, and a primitive method of contacting the trolley wire was used. As a countermeasure for this, a non-contact type using a laser beam is disclosed in Japanese Utility Model Laid-Open No. 5-45510. Two laser beams, vertical and inclined, are used, the displacement is measured by horizontal movement of the vertical laser beam, and the height is measured from the inclination angle of the inclined laser beam. However, in this method, even if the error of the lateral movement is very small, the height error corresponding to this is large, and there is a problem in practicality.
It is the crossover section where height and excursion measurements are particularly important. When moving from the main line to the side line, and conversely from the side line to the main line, if the height and excursion are not within the proper range, an accident will occur where the pantograph breaks into the trolley line. There is a long-awaited appearance of a device that can perform non-contact and reliable measurement and contribute to prevention of interruption accidents.
[0003]
[Means for Solving the Problems]
A base axis is provided at a symmetrical position from the center of the strip-shaped substrate passed to both rails. A light receiving tube is fixed to each base shaft. The attached step motor enables the light receiving tube to tilt at an appropriate angle around the vertical position, so that the tilt angle can be read. The light receiving tube captures an image of the upper train line when it is caused by natural light, and the height and deviation of the train line can be calculated by knowing the angle of the light receiving tube at the train line position at that time. In addition, when using a light source, a light projecting tube and a light receiving tube are fixed in parallel on both axes, the reflected light is captured by the light receiving tube, and if the angle of the light receiving tube at that time is known, the height and displacement of the train line as in natural light Can be calculated. A light source device such as a laser beam, a halogen lamp, or a light emitting diode is built in the projection tube. As will be described below, for example, the height H and the displacement d of the trolley wire can be calculated.
FIG. 1 shows a triangle when the light receiving tube rotated from the base axes S1 and S2 (this interval is A) captures the trolley line T (height H), and three sides are A, B, C, and three angles. Indicated by θ1, θ2, and θ3.
[Expression 1]

In the above equation, A is constant, and θ3 is 180 degrees minus θ1 + θ2. Therefore, H can be found by measuring θ1 and θ2.
In addition, if the central perpendicular of the S1S2 line is PP,

It becomes. Therefore, d can be determined simultaneously by measuring θ1 and θ2. If the point T is above or to the left of the PP line, the only difference is whether d is zero or negative. Therefore, by inputting θ1 and θ2 into the attached computer, H and d can be calculated immediately, and the image can be visually observed.
[0004]
Next, the crossover measurement will be described with reference to FIG. Here, a description will be given based on an embodiment in which a light projecting tube and a light receiving tube are provided in parallel on both axes. When the side line T2 is branched from the main line T1, the apparatus is placed at a position where the branch point slightly passes on the main line, and first, as described above, the two projection tubes are inclined to face each other, and the angle θ1 about the trolley line T1 is set. , Θ2 are measured. Next, when both the light projecting tubes are inclined to the side line side, the optical axis is aligned with the trolley line T2, and θ1 and θ2 in this case are similarly measured. Thus, the height and displacement of the main line T1 and the side line T2 can be calculated, and regarding the height, the height of both lines and the height difference h can be seen on the same image as shown in FIG. Since the optical system apparatus used here is composed of a telephoto lens system, it is not necessary to focus in particular if the distance to the measurement object is about 5 m.
Since the starting end portion of the side line is measured on the basis of the continuous main line, the suitability as a crossover can be determined simply.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment will be described with reference to FIGS. The substrate 1 is a strip-shaped frame that is passed over both rails R, and is provided with a pair of horizontal rollers 1a and 1b at the lower portion thereof, so that it is closely positioned on the rails and can move along the rails. The substrate 1 pivotally supports a pair of base shafts 2 at symmetrical positions from the center. A light receiving tube 4 is fixed to each base shaft. A stepping motor M is separately provided on the base shaft so that the optical axis tilt angle of the light receiving tube 4 can be detected. The light sensor of the light receiving cylinder captures the image of the upper trolley line in the natural light by the change of the sensor voltage, recognizes the angle of the light receiving cylinder at that time, and detects the position and angle of the train line.
The above is the case where the measurement environment is natural light. However, since the measurement is often performed at night after passing the last train, the light projecting cylinder 3 is fixed in parallel with the light receiving cylinder 4 on both axes, and laser beams and the like are added thereto. In addition, a light source device such as a halogen lamp, a light emitting diode, or an incandescent lamp is installed. FIG. 5 is a perspective view showing an embodiment when the light projecting cylinder 3 and the light receiving cylinder 4 are provided side by side.
The light source of the light projecting tube emits a trolley line, the reflected light is captured by the light receiving tube, and the angle at that time is detected.
FIG. 2 shows a so-called crossover measurement in which the side line T2 is branched from the main line T1, and both light projecting tubes are inclined to face each other to illuminate the trolley line T1 and the side line T2 with light sources, respectively. Measure the angles θ1 and θ2 when. Thereby, the height and deviation of both lines can be calculated by an attached computer (not shown). Further, the difference h between the heights of the two lines and the respective heights can be confirmed on the same image.
FIG. 6 is an example of a sensor voltage measurement diagram. The upper line A is from the light receiving cylinder on one side, the lower line B is from the other light receiving cylinder, and the downward projections are when the trolley line is detected. The deviation between the positions of the two protrusions is due to the presence of the deviation, and the wavy undulations indicate the shaking by the wind.
The inclination angle value of the light receiving cylinder when both protrusions are generated is immediately input to an attached computer so that the height and deviation can be read immediately. It is also possible to read changes continuously while moving the device along the rail.
[0006]
【The invention's effect】
Without touching the trolley line, you can immediately know the height and deviation without difficulty. The crossover line can be compared at the same position on the main line by measuring both of the main line and contributes to the prevention of interruption accidents.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating the principle of this apparatus.
FIG. 2 is a diagram illustrating the principle of crossover measurement.
FIG. 3 is a front view of the apparatus.
FIG. 4 is a plan view of the same.
FIG. 5 is a perspective view in which a light projecting tube and a light receiving tube are provided side by side.
FIG. 6 is a change recording diagram of an optical sensor voltage.
[Explanation of symbols]
1 Substrate 2 Base 3 Emitting tube 4 Receiving tube M Step motor

Claims (3)

   A strip-shaped board that can move along the upper surface of the left and right rails and the inner surface of the rail head, a pair of base axes that are pivotally supported on the board in a symmetrical position from the center of the board, A light receiving cylinder capable of forming an image shadow, a driving device that allows the above-mentioned light receiving cylinder to be raised and lowered within a predetermined angle range by a motor attached to the substrate, and the height and deviation of the train line from the inclination angle of the light receiving cylinder connected to the light receiving cylinder. An overhead line measuring device consisting of a calculation device capable of calculating the position is prepared, and on the main rail, the distance from the main rail center to the side line becomes an appropriate value near the branch point where the main line branches from the main line. A crossover measurement method in which a substrate is positioned, a light receiving cylinder is inclined to face and rotate up and down, and the height and deviation of both lines are measured from the position angle of the main line and the side line.    A strip-shaped substrate that can move along the upper surface of the left and right rails and the inner surface of the rail head, a pair of base shafts that are pivotally supported on the substrate in a symmetrical position from the center of the substrate, and one end that is fixed to the base shaft to reflect light from the light source A light-receiving tube capable of receiving light, a light-projecting tube whose one end is fixed to the base shaft and can be raised and lowered within a predetermined angle range in parallel with the light-receiving tube, and the light-receiving tube and the light projecting by a motor attached to the substrate An overhead wire measuring device is prepared, which consists of a drive device that allows the tube to be raised and lowered within a predetermined angle range, and a calculation device that is connected to the light receiving tube and can calculate the height and deviation of the train line from the inclination angle of the light receiving tube. In the vicinity of the branch point where the side line is branched, at the point where the distance from the main line rail center to the side line is an appropriate value, the board is positioned on the main line rail, the light receiving cylinder is inclined to face up and down, and the main line and Measure the height and deviation of both lines from the position angle of the side lines Unishi was a crossover measurement method.    A strip-shaped substrate that can move along the upper surface of the left and right rails and the inner surface of the rail head, a pair of base shafts that are pivotally supported on the substrate in a symmetrical position from the center of the substrate, and one end that is fixed to the base shaft to reflect light from the light source A light-receiving tube capable of receiving light, a light-projecting tube having one end fixed to the base shaft and capable of rising and falling within a predetermined angle range in parallel with the light-receiving tube, and the light-receiving tube provided by a motor attached to the substrate. Prepare an overhead wire measuring device consisting of a drive device that can raise and lower the light emitting tube within a predetermined angle range, and a calculation device that can be connected to the light receiving tube and calculate the height and deviation of the train line from the inclination angle of the light receiving tube, In the vicinity of the branch point where the main line branches off from the main line, at the point where the distance from the main line rail center to the side line becomes an appropriate value, the substrate is positioned on the main line rail, the light receiving cylinder is inclined to face up and down, From the position angle of the main line and side line, A crossover measurement method to measure the position.

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