JP4044242B2 - Trolley wire height and deflection measuring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a device for measuring whether or not a trolley wire installed on a rail is disposed at an appropriate relative position in a vertical direction and a horizontal direction with respect to the rail.
[0002]
[Prior art]
Conventionally, the height and displacement of the trolley wire are measured using a height and displacement measuring gauge rod. The height of the trolley wire is long, and the measuring staff carries a heavy gauge rod, stands up on the track and stretches the rod, and the deflection gauge at the tip of the gauge rod contacts the trolley wire at a height of about 5 m. And measure by reading the bar height scale. The displacement of the trolley wire is a horizontal deviation from the center point between the rails of the trolley wire, and is measured by reading the gauge scale at the point where the displacement measurement gauge and the trolley wire are in contact. Since this measuring method reads the height of the gauge bar and the scale of the displacement, the accuracy becomes about ± 10 cm and lacks accuracy. Also, the long displacement gauge is inconvenient to handle. Furthermore, there are problems such as having to keep a separate record.
In addition, there is a measuring instrument in which a laser distance sensor is movably attached on a gauge table placed orthogonally between rails. A laser distance sensor is known in which the distance from the rail surface to the trolley line is measured without contact, and the height of the trolley line is measured, and the deviation is obtained from the vertical position of the trolley line and the center position between the rails. . In this method, the gauge stand bends due to the weight of the laser distance sensor and its peripheral members, causing measurement errors, and the cable that connects the sensor and the control device that processes the signal from this prevents the sensor from moving. There is.
[0003]
[Problems to be solved by the invention]
Therefore, the present invention can surely visually confirm the arrangement of the measuring instrument directly below the trolley wire, can measure the height and displacement of the trolley wire with high accuracy, can be obtained with a simple structure and relatively inexpensively, and is small and light. It is an object to provide a measuring device that is easy to handle.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, in the first invention, the slide frame 2 is placed at predetermined positions on the rails R on both sides so as to cross the rails R at right angles, and is extended on the slide frame 2 in the extending direction. A slider 10 is slidably provided. A mirror 11 is provided on the slider 10 at a position where the upper trolley line T1 is projected. The laser distance sensor 4 is fixed to the slide frame 2. Then, the irradiation light spot P is applied to the trolley line T1, the distance to the trolley line T1 is measured, the height from the rail R surface to the trolley line T1 is set, and the vicinity of the mirror 11 on the slider 10 is set. The prism 13 is fixed to the laser beam, the laser beam is reflected from the horizontal direction to the vertical direction between the laser distance sensor 4 and the trolley wire T1, and between the rails R and R on the slide frame 2 A displacement measurement scale 8 having a scale for displaying the displacement distances on both sides along the sliding path of the slider 10 with the center as the origin is provided, and an optical scale sensor 14 is fixed on the slider 10 to displace the displacement measurement scale. 8 is detected, the displacement distance is calculated and set as shown in the display unit, the slider 10 is slid from the origin position on the slide frame 2, and the position where the trolley line T1 directly above is reflected on the mirror 11 , The displacement value D1 is displayed in response to the signal from the optical scale sensor 14, and the height value L1 is applied to the display unit by receiving the signal from the laser distance sensor 4 by applying the irradiation light spot P to the trolley line T1. The height of the trolley wire and the displacement measuring device 1 were configured to display. In the second invention, the displacement value D1 is displayed on the slide frame 2 in response to the signal from the optical scale sensor 14, and the height value L1 is displayed on the display portion in response to the signal from the laser distance sensor 4. In addition, a control device 5 for storing both measurement values is provided. In the third invention, an upper trolley line is displayed on the mirror 11 to display an aiming point 11a for placing the slider 10 directly below the trolley line. An aiming member 12 having an aiming point 12c that overlaps the aiming point 11a of the mirror 11 at a position to be projected is provided. In the fourth aspect of the invention, the slider 10 is provided with a magnifying glass facing the depression angle at which the mirror 11 projects vertically upward. In the fifth invention, the origin detection sensor 9 is provided at the origin position on the slide frame 2 to detect the optical scale sensor 14 and return the measurement distance of the optical scale sensor 14 to zero. In the sixth aspect of the invention, the extension frame 15 is configured to be connectable so that the slide frame 2 can expand the displacement measurement range in order to measure the main line T1 and the branch line T2 of the trolley line.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 is a front view of a trolley wire height / deviation measuring device, FIG. 2 is a plan view, and FIG. 3 is a side view.
1 to 3, 1 is a height and displacement measuring device, 2 is a slide frame, 3 is a displacement measuring device, 4 is a laser distance sensor, 5 is a control device, R is a rail, and T is a trolley wire. is there. The slide frame 2 is placed so as to span a predetermined position on the rail R. A displacement measuring device 3 is slidably provided on the slide frame 2.
[0006]
The slide frame 2 is orthogonal to the rail R and extends parallel to the rail surface. The long side portion of the slide frame 2 is formed by a pair of parallel slide guides 7. A displacement measurement scale 8 is provided on the upper surface of one slide guide 7. The scale of the displacement measuring scale 8 is engraved so that the center point between the rails on both sides is zero and the displacement distance to both sides is indicated. In addition, an origin detection sensor 9 for detecting the measurement origin is provided at the center point between the rails R, R in the other slide guide 7. The origin detection sensor 9 is composed of a photoelectric sensor, and when the optical scale sensor 14 is located at the origin, the count value of the pulse signal of the optical scale sensor 14 in the control device 5 is reset to 0 by contact with the slider 10. Guide pieces 6 are provided at the lower ends of both ends of the slide frame 2. The guide piece 6 is a plate piece refracted at a right angle, and the placement reference surface is brought into contact with the inner side surface of the rail R to determine the mounting position of the slide frame 2 on the rail R.
[0007]
The displacement measuring device 3 includes a mirror 11, an aiming member 12, a prism 13, and an optical scale sensor 14 on a slider 10. The slider 10 engages with the slide guide 7 of the slide frame 2 and slides along this. As shown in FIG. 4, the mirror 11 is fixed on the slider 10 so as to be inclined so that the upper trolley line T is reflected when viewed obliquely downward at a predetermined angle. On the mirror surface of the mirror 11, a “+” first line of sight 11a is displayed. An aiming member 12 is provided above the mirror 11 in order to ensure visual inspection in the vertical direction. The aiming member 12 has a transparent plate 12a positioned directly above the mirror 11, and is supported horizontally by a support plate 12b. A second sight line 12c of “×” is displayed on the transparent plate 12a. As shown in FIGS. 5 and 6, when the intersection of the first aiming line 11a and the second aiming line 12c is matched, the vertical upper part is reflected on the mirror 11.
As shown by the broken line in FIG. 3, the mirror 11 may face the magnifying glass 17 instead of providing the aiming line 11 a and the aiming member 12 or together with the aiming line 11 a and the aiming member 12. That is, the magnifying glass 17 is supported obliquely downward toward the mirror 11 by the support legs 18 fixed to the slider 10. The magnifying glass 17 sets the tilt angle so that the mirror 11 is viewed vertically above with the magnifying glass 17 viewed through it.
[0008]
The laser distance sensor 4 is fixed between one end portions of the slide guides 7 and 7, and irradiates the laser beam with the optical axis directed in the extending direction of the slide guides 7 and 7 from the irradiation window 4a as shown in FIG. . The laser distance sensor 4 measures the distance to the trolley line T1 from the phase difference between the light applied to the trolley line T1 and the reflected light therefrom. As shown in FIG. 7, the prism 13 reflects the irradiation light and the reflected light so as to guide them between the laser distance sensor 4 and the trolley line T. When the measurer looks at the mirror 11 of the measuring instrument 4 from an oblique direction, the irradiation light spot P hitting the trolley line T in a state where the intersection of the first aiming line 10a and that of the second aiming line 12c coincide is slightly above the coincidence point Will be reflected in the image. The laser distance sensor 4 measures the distance to the trolley line T1, sends a signal to the control device 5, and the control device 5 displays the measurement result on the display unit and stores it in the internal storage unit.
[0009]
The optical scale sensor 14 is fixed to the end of the displacement measurement scale 8 on the slider 10. The optical scale sensor 14 detects the scale of the displacement measurement scale 8 if the displacement measuring device 3 is moved from the origin detected by the origin sensor 9 to a position where the trolley line T is reflected in the mirror 11. A pulse signal. Upon receiving this signal, the control device 5 counts to calculate the deviation distance, and displays the measurement result on the display unit and also stores it in the internal storage unit.
[0010]
Reference numeral 15 denotes an extension frame. When measuring the height L2 and the deviation D2 of the connecting line T2 outside the rail R, such as the connecting line T2, the connecting frame 16 is added to one end of the slide frame 3. It is configured. When this is used, the control device 5 performs measurement on the crossover line T2, calculates the interval with the main line T1, displays it on the display unit, and stores it in the storage unit.
[0011]
When measuring the height L1 and the deviation D1 of the trolley wire T1 on the rail using this measuring device 1, first, the guide piece 6 of the slide frame 3 is brought into contact with the inner surface of one rail R. The apparatus 1 is installed on the rail R. Next, the displacement measuring device 3 is placed at the measurement origin, and the control device 5 is turned on. When the origin sensor 9 detects contact with the slider 10, the control device 5 that has received this signal sets the count value to 0 and can start measurement. Here, the displacement measuring device 3 is moved and brought to a position where the intersection of the first line of sight 10a and that of the second line of sight 12c and the trolley line T1 are superimposed on the mirror 11. As the displacement measuring instrument 4 moves, the optical scale sensor 14 generates a pulse signal that sequentially detects the scale of the displacement measuring scale 8, and the control device 5 counts this to calculate the displacement D1. It is displayed on the upper display unit and stored in the storage unit. When the magnifying glass 17 is provided, if the mirror 11 is viewed through the magnifying glass 17, it is possible to easily aim the vertical trolley line T1.
[0012]
Next, when the irradiation light spot P is applied to the trolley line T1 via the prism 13 by the laser distance sensor 4 at the position of the deviation measuring device 3, the laser distance sensor 4 calculates the phase difference between the irradiation light and the reflected light. The height L1 of the trolley line T1 on the rail R is calculated by the control device 5, displayed on the display unit, and recorded in the storage unit. Since the displacement measuring device 3 on the slide frame 3 can be made small and light, the measuring apparatus 1 has a very small deflection of the slide frame 2 and high measurement accuracy.
Similarly, the height and displacement of the crossover line T2 are measured, and the distance from the main line is also displayed by the control device 5.
[0013]
【The invention's effect】
As described above, in the present invention, it is possible to easily measure the height and displacement of the trolley wire with high accuracy, and it is easy to install and convenient to handle. In particular, it is possible to easily aim the trolley wire with a magnifying glass, and it is easy to align the measuring instrument. Further, since the measurement record remains and the configuration is simple, the cable does not hinder the movement of the slider.
[Brief description of the drawings]
FIG. 1 is a front view of a trolley wire height / deviation measuring device according to the present invention.
FIG. 2 is a plan view of a height / deviation measuring apparatus.
FIG. 3 is a side view of a height / deviation measuring apparatus.
FIG. 4 is a schematic front view of the measuring instrument in use.
FIG. 5 is a plan view of a mirror in a non-vertical state.
FIG. 6 is a plan view of the mirror as viewed vertically.
FIG. 7 is a front view of the laser distance sensor in use.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Height, deflection measuring device 2 Slide frame 3 Deviation measuring device 4 Laser distance sensor 5 Control device 6 Guide piece 8 Deviation measuring scale 9 Origin detection sensor 10 Slider 11 Mirror 11a First aiming line 12 Aiming member 12c First 2 Aiming line 13 Prism 14 Optical scale sensor 17 Magnifier R Rail T1, T2 Trolley line

Claims (6)

A slide frame that is placed so as to cross over the rail at a predetermined position on both rails;
A slider provided on the slide frame so as to be slidable in the extending direction;
The immobilized on a slider, and a mirror disposed beneath the contact wire in a position to leave reflects upward the contact wire,
A laser distance sensor fixed to the slide frame, measuring the distance to the trolley line by applying an irradiation light spot to the trolley line, and calculating the height from the rail surface to the trolley line,
A prism fixed in the vicinity of a mirror on the slider and reflecting laser light from a horizontal direction to a vertical direction between the laser distance sensor and a trolley line;
A displacement measurement scale having a scale for displaying the displacement distance to both sides of the center between both rails on the slide frame along the sliding path of the slider;
An optical scale sensor fixed on the slider, configured to detect the scale of the displacement measurement scale, calculate the displacement distance, and set as shown on the display unit;
The slider is slid from the origin position on the slide frame, and the deviation value is displayed in response to the signal from the optical scale sensor at the position where the upper trolley line is reflected on the mirror, and the trolley line is irradiated. An apparatus for measuring the height and displacement of a trolley wire, which receives a signal from the laser distance sensor by applying a light spot and displays a height value on a display unit. The slide frame receives a signal from the optical scale sensor and displays a deviation value, and receives a signal from the laser distance sensor and displays a height value on the display unit. The trolley wire height / deviation measuring device according to claim 1, further comprising a control device for storing a height value. The mirror displays a sighting point for projecting the upper trolley line and placing the slider directly below the trolley line. The trolley wire height / deviation measuring apparatus according to claim 1, further comprising an aiming member having an aiming point overlapping the point. The trolley wire height / deviation measuring device according to claim 1, wherein the slider is provided with a magnifying mirror facing at a depression angle at which the mirror projects vertically upward. The trolley wire according to claim 1, wherein an origin detection sensor that detects the optical scale sensor and returns the measurement distance of the optical scale sensor to 0 is provided at an origin position on the slide frame. Height, displacement measuring device. The extension frame can be connected so that the slide frame can be extended to measure a main line and a branch line of a trolley line. Trolley wire height and displacement measuring device.

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