JP4339499B2 - Trolley wire height and deflection measuring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for measuring whether or not a trolley wire installed above a rail is disposed at an appropriate relative position in the vertical and horizontal directions with respect to the rail.
[0002]
[Prior art]
Conventionally, the height of the trolley wire (distance from the top surface of the rail to the bottom surface of the trolley wire) and displacement (horizontal deviation from the center of the rail, which is the origin of displacement) are measured using a height and displacement measurement gauge rod. Has been implemented. The height of the trolley wire is determined by the operator carrying the gauge rod, standing on the track and extending the rod, and bringing the deflection gauge at the tip of the gauge rod into contact with the trolley wire at a height of about 5 m. Measured by reading the height scale. The displacement of the trolley wire is measured by reading the gauge scale at the point where the displacement measurement gauge and the trolley wire are in contact. The gauge rod is long and inconvenient to handle, and is heavy and heavy on the operator. In addition, since this measuring method is to visually read the scale of the gauge rod and the displacement scale, the accuracy becomes about ± 10 cm, and not only is inaccurate, but also a record must be kept separately. There is inconvenience that must be done.
There is also known a measuring instrument in which a laser distance sensor is movably attached on a gauge table placed orthogonally between rails. This laser distance sensor measures the distance from the rail surface to the trolley line in a non-contact manner, and calculates the deviation from the vertical downward position of the trolley line and the center position between the rails. In this measuring instrument, there is a problem that the gauge base is bent due to the weight of the laser distance sensor and its peripheral members, causing a measurement error, and the cable connecting the sensor and the control device tends to hinder the movement of the sensor.
[0003]
[Problems to be solved by the invention]
Therefore, the present invention can surely confirm the arrangement of the measuring device directly below the trolley wire by sounding the alarm and visually, can accurately measure the height and displacement of the trolley wire, and can be obtained with a simple structure and relatively inexpensively. Therefore, an object of the present invention is to provide a small and light measuring device that is easy to handle.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, in the present invention, a slide frame 2 is provided at a predetermined position on the rails R1 on both sides so as to be crossed perpendicular to the rails R1. A slider 6 is provided on the slide frame 2 so as to be slidable in the extending direction thereof. On the slider 6, a mirror 10 and a prism 9 for refracting the laser beam are provided for projecting the trolley line and allowing the operator to visually check the trolley line when it is disposed near the trolley line T1. A laser distance sensor 4 for irradiating the trolley line T1 with laser light through the prism 9 on the slide frame 2 and receiving the reflected light to calculate and display the height from the rail R1 surface to the trolley line T1; And an alarm device for receiving a reflected light incident on the laser distance sensor 4 and generating a detection signal. The laser light is refracted from the horizontal direction to the vertical direction between the laser distance sensor 4 and the trolley line T1. A plurality of pulleys 3 b and a rotary encoder 3 a are provided on the slide frame 2, a wire 3 c is wound around the pulley 3 b, and the midway of the wire 3 c is locked to the slider 6 to constitute the displacement measuring device 3. The deviation measuring device 3 senses the movement distance until the alarm device issues a detection signal when the slider 6 moves directly from the deviation origin O to the trolley line T1, and the deviation of the trolley line T1 is detected. Calculated and displayed as a unit.
[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, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. 4 is a sectional view taken along line IV-IV in FIG.
[0006]
1 to 4, R1 is a main rail, R2 is a side rail, and intersects with the main rail R1. T1 is a main line side trolley line, and T2 is a side line side trolley line. Reference numeral 1 denotes a height and displacement measuring device, 2 a slide frame, 3 a a rotary encoder constituting the displacement measuring device 3, 4 a laser distance sensor for height measurement, and 5 a control device.
[0007]
The slide frame 2 is placed at a predetermined position on the rail R1 so as to be spanned in a direction orthogonal thereto. On this slide frame 2, a slider 6 for refracting the laser beam in the horizontal direction projected from the laser distance sensor 4 vertically and irradiating the trolley line T is engaged, and the direction orthogonal to the rail R1. It can slide freely.
[0008]
As shown in FIG. 1, a pair of legs 7 are provided on the lower surface of the slide frame 2 at predetermined intervals so as to abut against the opposing inner surface of the rail R <b> 1 and regulate the mounting position on the rail. . Further, the slide frame 2 is provided with a proximity switch 8 as an origin detection sensor at a center corresponding position (deviation origin) O between the rails R1 and R1, and a detection body 6a at the center of the slider 6 is provided. However, when passing over the proximity switch 8, the measured value of the displacement measuring device 3 is reset.
[0009]
The deviation measuring device 3 includes a rotary encoder 3a provided at one corner of the slide frame 2, pulleys 3b provided at four corners, and wires 3c wound around these. The wire 3c is locked to the slider 6 in the course of extension, and the pulley 3b is rotated according to the movement of the slider 6, and the moving distance from the deviation origin O is calculated by the rotary encoder 3a. Store and display on the display unit 5a.
[0010]
The laser distance sensor 4 is fixed near the upper portion of the leg 7 on one end side of the slide frame 2. The laser distance sensor 4 projects laser light toward the slider 6 in the horizontal direction. A prism 9 is provided on the slider 6 and refracts the laser beam from the laser distance sensor 4 vertically upward. If the slider 6 is positioned directly below the trolley line T 1, the laser light is irradiated on the lower surface of the trolley line T 1, reflected, and returned to the laser distance sensor 4 via the prism 9. On the slider 6, a mirror 10 is provided so that the measurement operator can confirm the trolley line T <b> 1 positioned directly above. When the measurement operator moves the slider 6 from the deflection origin O so as to be arranged directly below the trolley line T1, the mirror 10 is visually observed, and the approximate position is determined when the trolley line T1 is reflected. Is finely adjusted so that the spot of the laser beam is applied to the lower surface of the trolley line T1.
[0011]
An alarm device is built in the laser distance sensor 4, and when the laser light hits the lower surface of the trolley line T1, is reflected and returns to the laser distance sensor 4, a trolley line detection signal is generated, and the slider 6 is moved to the trolley line. It can be seen that it is arranged directly below the line T1. The alarm device is set so as to emit a detection signal only when receiving reflected light from an object within a predetermined height range where the trolley wire T1 is expected to be disposed in advance. At this position, the height L1 of the trolley line T1 is calculated by the laser distance sensor 4 from the phase difference between the light applied to the trolley line T1 and the reflected light therefrom, and is stored in the control device 5 and displayed on the display unit 5a. . At the same time, the deviation D1 of the trolley wire T1 is calculated by the rotary encoder 3a, stored in the control device 5, and displayed on the display unit 5a.
[0012]
Similarly, the height L2 and the deviation D2 of the trolley wire T2 on the connecting wire side outside the rail R1 can be measured.
[0013]
【The invention's effect】
As described above, the present invention provides a trolley wire height and displacement measuring device that can easily measure the height and displacement of the trolley wire with high accuracy and is easy to install and easy to handle. can do.
[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.
3 is a sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Height, deflection measuring device 2 Slide frame 3 Deviation measuring device 3a Rotary encoder 3b Pulley 3c Wire 4 Laser distance sensor 5 Control device 5a Display unit 6 Slider 7 Leg 8 Proximity switch 9 Prism 10 Mirror R1 Rail T1, T2 Trolley line

Claims (2)

A slide frame that is placed so as to hang over a predetermined position on the rails on both sides perpendicular to the rails;
On this slide frame, a slider provided slidably in the orthogonal direction of the rail,
A mirror that is fixed on the slider and that causes the operator to visually check the trolley line when the slider is placed directly below the trolley line;
A laser distance sensor that is fixed to the slide frame, irradiates the trolley line with laser light, measures the distance to the trolley line by its reflected light path length, calculates and displays the height from the rail surface to the trolley line, and
An alarm device for receiving a reflected light from a trolley line incident on the laser distance sensor and emitting a detection signal when the laser light hits the trolley line;
A prism fixed in the vicinity of a mirror on the slider and refracting laser light from a horizontal direction to a vertical direction between the laser distance sensor and a trolley line;
A wire that is hung between a plurality of pulleys provided on the slide frame and is locked to the slider, and a wire that accompanies the movement of the slider from the deviation origin until the alarm device issues a detection signal. A trolley wire height and displacement measuring device comprising a displacement measuring device including a rotary encoder for calculating and displaying the moving distance of the slider as a displacement of the trolley wire by sensing the movement . 2. The trolley wire according to claim 1, wherein an origin detection sensor for detecting a slider and resetting the displacement measuring device is provided at the deviation origin position on the slide frame. Height / deviation measuring device.

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