JPH0530715U - Rail clearance measuring instrument - Google Patents

Abstract

(57) [Abstract] [Purpose] In order to eliminate erroneous detection due to foreign matter on the rail, which was inconvenient in conventional rail switch detection with a photoelectric switch, an optical projector and a photoreceiver were used instead of the reflective photoelectric switch. To carry. [Structure] The number of rotations of a specific wheel running on the rail is transmitted with a predetermined number of pulses, and the rail length and play length are calculated by a computer in correspondence with the presence or absence of the rail, and the rail temperature is also measured. And remember each,
In the conventional rail-to-rail measuring device to be printed out,
The means for detecting the presence / absence of the rail is installed as a set of an optical projector and a light receiver across the rail, and the projection of the optical projector receives the light transmitted through the rail gap to eliminate the presence of the rail. Is detected and is detected as the presence of the rail when no light is received.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a device for measuring a clearance between rails and a rail length, and more particularly, to a rail clearance measuring device of a rail presence detection method by transmitting light.

[0002]

[Prior Art]

 Needless to say, measuring the clearance between the laid rails is a necessary task for track maintenance, but this task involved a very difficult task. For this reason, the rail clearance measuring instrument shown in Japanese Patent Application No. 2-65678 previously provided by the applicant of the present application has been put to practical use in many cases, because it is well received as a convenient item. This rail clearance measuring device transmits the rotation speed of a specific wheel running on the rail with a predetermined number of pulses, and the rail length and clearance length are correlated with the presence or absence of the rail detected by the reflective photoelectric switch. Each of these was processed in the steps of number of pulses → length conversion → storage → printout, and, in addition, the rail temperature was continuously measured and processed.

However, this reflection type photoelectric switch is very strongly affected by dust, water droplets, oil film and the like existing on the rail, and its reaction is hindered, and this point has emerged as a major defect. In other words, the track is usually laid in the open field without any covering, which naturally causes dust or oil drops on the passing vehicles, and rust may occur on tracks with few passing vehicles. There is also. Also, in a covered tunnel or underground iron, etc., water droplets may be dropped, so when these foreign objects are encountered, the reflective photoelectric switch does not react to the presence of the rail and, as a result, is falsely detected as a gap. As a result, accurate measurement of the clearance and rail length may be hindered.

[0004]

[Problems to be solved by the device]

 In view of the above-mentioned situation, the present invention has been earnestly studied in order to eliminate the unavoidable defect of the reflection type photoelectric switch with respect to the gap measurement and to replace the gap detection means and select a more suitable detection means. After repeated trials, the present inventor came to the idea of using the received light of transmitted light by light projection as a major measure for detection, and provided the present invention.

[0005]

[Means for Solving the Problems]

 The present invention has dealt with by applying the following means in order to solve the above problems. In other words, it has one or more wheels running on the rail, transmits a specific number of rotations of that wheel with a predetermined number of pulses, and determines the rail length for each of the presence or absence of the rail. A means for detecting the presence / absence of a rail in a conventional rail clearance measuring instrument that calculates and calculates the clearance length by a computer, continuously measures the rail temperature, stores each data, and prints out. In order to reliably identify and detect the gap between the rail and the gap regardless of foreign matter on the rail, an optical projector and a light receiver are provided on both sides of a suitable position across the rail, and the optical projection is provided. It is configured to detect the absence of the rail by detecting the light emitted from the vessel through the space between the rails, and to detect the presence of the rail when there is no light.

[0006]

[Function of the device]

 The operation of the rail clearance measuring device of the present invention (hereinafter simply referred to as the present measuring device) will be described with reference to FIGS. 1 to 4 of the drawings.

A predetermined pulse signal is transmitted by the rotary transmitter 20 connected to the specified one wheel 10a of the insulated type wheels 10 running on the laid rail 95, while it is projected from the optical projector 35. Upon receiving the transmitted light L, the rail gap 90 is detected (when no light is received, it is detected as the rail 95) and a light reception signal is emitted. Thus, based on this signal, when there is a rail 95, there is no light reception signal, so the number of pulses is counted by one counter as the rail length count. The number of pulses is counted by one counter, each count value is converted into a length by the computer 45 (CPU) (depending on the diameter of the wheel 10a and each count value for the rotation speed of the wheel 10a), and stored. Then, the value of the time stamp is displayed on the display immediately, but it is formal data recording by printing out later. The non-contact temperature measurement result by the radiation thermometer is also input to the computer in synchronization with the pulse, and the average temperature, maximum value, and minimum value in rail units are calculated, stored, and printed out.

The measuring instrument 1 normally moves forward on the rail 95, but it may be forced to retreat during measurement for some reason, and in order to respond to this, the rotation transmission is performed. By converting the pulse output from the device 20 into two phases and separating it into a positive side pulse and a negative side pulse, the counter side can be used to offset the negative side count value from the positive side count value to ensure accurate measurement values. ing.

Note that the diameter of the wheel 10a decreases due to wear of the diameter as the measurement continues, and to cope with this, the computer 45 has a diameter compensation function to ensure accurate measurement. There is.

In the operation of the measuring device 1, when the simultaneous measurement of both rails of the track by connecting the vehicles (the measuring device 1 is connected to the vehicle in parallel), the power receiving board receives power supply from the vehicle. On the other hand, in the case of manual driving by human power or self-driving by automating the measuring device 1, a battery is held as a power source to cope with this.

Due to the above-described operation, the measuring instrument 1 measures the rail clearance 90 and the rail length together with the temperature extremely easily, safely and accurately, regardless of the foreign matter on the rail, and manages the track maintenance. It works effectively.

[0012]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view of the measuring instrument 1, FIG. 2 is a side view taken along the line AA of FIG. 1, and FIG. 3 is a plan view thereof. Place the transmitter 20, light projector 30, light receiver 31, radiation thermometer 35, CPU board 40, printer 50, display 60, battery 70, operation panel 80 and main measuring instrument 1 on the rail 95. A hand push rod 7 for convenient manual operation and a hand grip 8 for convenient carrying of the measuring instrument 1 are additionally provided. The circuit diagram of the measuring instrument 1 is shown in FIG.

In the present embodiment, two wheels 10 are provided to stabilize on the rail 95, but a minimum of one wheel 10 will work, and three or more wheels 10 may be provided. The wheel 10 is made of a hard synthetic resin or a similar substance that serves as an electrical insulator, and is mounted on the frame 5 via a bearing 15 so as to keep smooth rotation. A specific wheel 10a of the wheel 10 has its shaft extended and is connected to the rotation transmitter 20 so as to transmit a pulse corresponding to the rotation speed of the wheel 10a. Further, a brim is attached to the outer periphery of the wheel 10 to ensure smooth and reliable engagement with the rail 95. Although it is a hard synthetic resin material, wear due to an increase in mileage is considered, and in order to respond to this, the computer 45 has a diameter compensation function to ensure the accuracy of measured values.

The rotation transmitter 20 is connected to the wheel 10a as described above and converts the number of rotations of the wheel 10a (strictly speaking, a rotation angle) into a pulse and transmits the pulse. If the outer circumference of contact with the rail 95 is 200 mm, and 2000 pulses are transmitted per rotation (360 ⇒ angular rotation), this corresponds to a length of 0.1 mm per pulse, so the number of pulses is counted. This makes it possible to measure the rail length and rail clearance very accurately.

The light projector 30 is a frame that projects light toward the light receiver 31 from below the center of the measuring device 1 to the opposite side of the rail from one side of the rail (see FIG. 2). Attached to 5. And, in order to make the beam of light stronger, the condensing projection method is adopted.

As can be seen in FIG. 2, the light receiver 31 is provided so as to accurately receive the projection light L on the opposite side of the light projector 30 with the rail 95 interposed therebetween.

The installation positions of the light projector 30 and the light receiver 31 described above are not limited to those in this embodiment, and the point is that the rail 95 is sandwiched and the light is reliably projected in the gap between the rail clearances 90. It may be arranged so as to catch L, and an appropriate arrangement is possible.

The radiation thermometer 35 is provided near the front of the measuring instrument 1 and below the measuring instrument 1, and measures and sends the temperature of the engraved rail 95 (strictly, the rail surface temperature).

As can be seen from the circuit diagram shown in FIG. 4, the CPU board 40 includes a pulse two-phase converter, a counter R, a counter G, a computer 45, a PIA, a clock, a bus buffer, a rotary oscillator 20, It is connected to the light receiver 31, the radiation thermometer 35, the printer 50, and the display 60, and is also provided with a wheel diameter compensation adjuster 18 to enable adjustment due to the diameter wear of the wheel 10a. Then, the power is supplied through the DC / DC converter by the power switch 41, and the power P. L49 lights up.

2 and 3, the printer 50 is arranged in the right center of the operation panel 80, which will be described later, and based on the calculation and storage of the computer 45, by the selection of the print selection SW51 and the printer start SW52, It is configured to print out the necessary items.

The display unit 60 is arranged at the left center of the operation panel 80, and is configured to digitally display the rail length and the rail clearance separately.

The battery 70 as a self-owned power source is mounted on the lower left part of the frame 5, and its charging outlet 75 is provided on the lower left side of the operation panel 80. A power receiving panel (not shown) may be provided instead of the battery 70, or may be installed side by side to receive power supply from the outside.

The operation panel 80 is provided obliquely on the operator side of the measuring instrument 1, and includes the printer 50, the display 60, the power switch P. L49, print selection SW51, printer start SW52, reset 53 and the like are arranged.

A power switch 41 and a fuse 43 are arranged on the lower right side of the operation panel 80. In addition, the DC / DC converter 43 to be passed through when inputting from the power source to each device of the CPU board 40 is properly installed in the vicinity of the CPU board 40 together with the wheel diameter compensation adjuster 18. Is.

In the present embodiment, the hand push rod 7 is provided on the operator side of the measuring instrument 1 so that each side of the laying rail 95 makes it convenient for the measurer to carry out the hand pushing measurement, and the hand grip 8 is provided on the upper side. It was provided to facilitate the convenience of carrying around.

However, in the patrol vehicle, the maintenance vehicle, and the like, it is possible to connect the measuring device 1 to each of the rails 95 of the laid rail, one at a time, and perform simultaneous and efficient measurement.

Regarding the clock of the CPU board 40, it is convenient to input the measurement time to the computer 45 to improve the time-lapse of recording, but the clock is an essential constituent element of the measuring instrument 1. Not a thing.

Now, the operation of the measuring instrument 1 will be described as manual measurement.

First, the measuring instrument 1 is placed on the laying rail 95, the power switch 41 is turned “on”, and the push bar 7 is manually pushed to run. Thus, the rotation transmitter 20 according to the number of rotations of the wheel 10a uses the pulse signal as the plus side pulse converted by the pulse two-phase converter and receives the projection light L emitted from the light projector 30 as the light receiver 31. Is transmitted to the counter R when no light is received (rail is present) and to the counter G when the light receiver 31 receives the projected light L (rail interval), and counts up. If the measuring instrument 1 travels backward, as a negative pulse, both counters R or G are decremented accordingly. In this way, each count value is input to the computer 45, the required length calculation is performed, and stored as each length.

Incidentally, if 1 count is 0.1 mm as described above, and if the count value of the counter G is 65, it is converted to 6.5 mm by the computer 45 by setting the wheel diameter compensation adjuster 18 to 0. Then, it is digitally displayed as 6.5 on the play area display section of the display unit 60. As the count value of the counter R, the corresponding digital numerical value is displayed on the rail length display section of the display section 60.

In the computer 45, the absence of the rail 95, that is, the time when the measurement of the rail play is finished, that is, the end point in one cycle of “rail nonexistence” → “rail existence” → “rail nonexistence”, A command is issued to each counter R and G to clear each count value of the counter R and the counter G, and the value of the rail clearance is memorized following the No. Memorize the value of the rail length by following the No. Calculates and stores the cumulative value of rail length (normally the value after clearing by reset 53 at the start of measurement on the day). Store the rail temperature for each rail 95 (following the No.) together with the average value, maximum value, and minimum value. The time immediately before the reset is stored by inputting the clock. And so on.

Thus, after the measurement is completed, selection is made based on the selection of the print selection SW51 and the printer start SW52 is turned on to print out each selected value, and the measurement result is displayed along with the time and the temperature on the rail. It is recorded separately.

When the measurement work of the measuring instrument 1 is completed, the power switch 41 is turned off.

[0035]

[Effect of the device]

 By carrying out the present invention, the measurement of the rail clearance and the rail length, including the simultaneous measurement of the rail temperature, is extremely easy and accurate without being affected by foreign matter on the rail. In addition, it will be carried out safely and efficiently, and will greatly contribute to the rationalization of track maintenance management and the prevention of vehicle noise.

[Brief description of drawings]

[Summary] All the drawings show the embodiments of the present invention.

FIG. 1 is a front view of the present measuring device.

FIG. 2 is a side view of the measuring instrument according to the arrow AA of FIG.

FIG. 3 is a plan view of the measuring device.

FIG. 4 is a circuit diagram of the present measuring device.

[Explanation of symbols] 1 Measuring instrument 5 Frame 7 Hand push rod 8 Hand grip 10 Wheel 15 Bearing 18 Wheel diameter compensation adjuster 20 Rotation transmitter 30 Optical projector 31 Light receiver 35 Radiation thermometer 40 CPU board 41 Power switch 42 DC / D
C converter 45 Computer 49 Power supply P.
L 50 Printer 51 Print selection SW 52 Print start SW 53 Reset 60 Display 70 Battery 75 Charging outlet 80 Control panel 90 Rail clearance 95 Rail.

Claims (1)

[Scope of utility model registration request] 1. The presence of a rail having one or a plurality of wheels running on a rail, transmitting a specific number of rotations of the wheel with a predetermined number of pulses, and detecting by a reflective photoelectric switch. The rail length and the play length are measured in accordance with the presence / absence, and the rail temperature is continuously measured to store each data and printed out. The projector and the light receiver are arranged at appropriate positions on both sides of the rail so that the rail and the gap are detected depending on whether or not the light transmitted through the gap of the light projector is received. Rail clearance measuring device.