JP3134797U - Rail advance measuring device - Google Patents

Abstract

A rail advance measurement device capable of accurately measuring the direction of rail displacement and improving work efficiency is provided.
A base 11 is elongated and can be installed on one rail 1a along the length direction of one rail 1a. The measurement unit 12 includes a slide unit 26 that is slidable along the length direction of the base 11. The measurement unit 12 is provided on the base 11 so as to measure and display the slide direction and the slide amount from a predetermined position of the slide unit 26. The laser light emitting unit 15 is provided so as to be slidable together with the slide unit 26. When the base 11 is installed on one rail 1a, the laser light emitting unit 15 has a base perpendicular to the sliding direction and a base on the inner side of the other rail 1b from the upper surface of the inner side of the first rail 1a. Surface irradiation with laser light can be performed in an angle range up to the upper surface.
[Selection] Figure 1

Description

  The present invention relates to a rail advance measurement device.

  In general, since the long rail expands and contracts, the advancement, which is the amount of expansion and contraction of the rail, is regularly measured, and maintenance inspection is performed so that the rail does not protrude or meander. Especially in summer, it is very important to measure the advance of the rail because the rail is stretched and dangerous. The measurement of the advance of the rail is performed by measuring the deviation of the measurement point provided on each rail with respect to the reference point provided between the left and right rails. In the case of the Shinkansen, the reference point and the measurement point are provided every 500 m.

  Conventionally, the measurement of the advance of the rail is done by applying water thread to the reference piles provided on both sides of the left and right rails, and measuring the deviation of the measurement points provided on each rail using the water thread as the reference line. It was done by that. However, this conventional method is a manual operation, and has a problem that it requires a large number of workers and a long working time. Therefore, in order to solve this problem, a method using an optical measuring instrument (see, for example, Patent Document 1), or a measurement point is automatically detected and measured while moving on a rail with a work vehicle. A method (for example, see Patent Document 2 or 3) has been developed.

  In the methods described in Patent Documents 1 to 3, the amount of advance of the rail can be measured accurately and quickly, but equipment such as an optical measuring instrument and a work vehicle is expensive and difficult to introduce. . Therefore, using a T-shaped ruler, the amount of movement of the measurement point provided on the base upper surface inside each rail with respect to the reference point is measured.

JP-A-2005-77096 Japanese Patent Laid-Open No. 11-37728 JP-A-6-88711

  However, the method using a T-shaped ruler has a problem that work efficiency is poor because the left and right rails cannot be measured simultaneously. Further, since the measurement is performed by changing the direction of the T-shaped ruler on the left and right rails, there is a problem that the direction of the rail shift is easily mistaken particularly at night when it is difficult to see the surroundings.

  The present invention has been made by paying attention to such a conventional problem, and provides a rail advance measurement device capable of accurately measuring the direction of rail displacement and improving work efficiency. Objective.

  In order to achieve the above object, a rail advancement measuring apparatus according to the present invention measures a deviation of a measurement point provided on a base upper surface inside each rail with respect to a reference point provided between the left and right rails. Is a rail advancement measuring device for measuring the advancement amount of each rail, comprising a base, a measuring part, and a laser light emitting part, and the base can be installed on one rail. The measuring unit is provided so as to be slidable along the length direction of the rail with respect to the base when the base is installed on one rail, and a sliding direction from a predetermined position of the base and The laser light emitting unit is configured to be slidable with respect to the base together with the measurement unit, and when the base is installed on one rail, the laser emitting unit is arranged in a sliding direction. Perpendicular to An inner, that a possible surface illumination laser beam to the base top surface inside the inner from the base upper surface other rail of the one rail, characterized.

  The rail travel measuring apparatus according to the present invention is used as follows in order to measure the travel of the left and right rails such as the Shinkansen. First, the base is installed on one rail along the length direction of one rail. At this time, the base is installed so that the sliding direction of the measurement unit is parallel to one rail. Laser light is irradiated onto the surface by the laser light emitting unit, and the measurement unit and the laser light emitting unit are slid to match the laser light to a reference point provided between the left and right rails. Next, the measurement unit and the laser emission unit are slid to sequentially match the laser beam to the measurement points provided on the upper surface of the base inside each rail. At this time, the laser beam is irradiated from the upper surface of the inner base of one rail to the upper surface of the inner base of the other rail in a plane perpendicular to the sliding direction. Therefore, it is possible to adjust the reference point and the measurement point of each rail accurately and easily. Further, by setting the measurement unit to measure and display the slide direction and the slide amount from the reference point, the deviation of the measurement point of each rail from the reference point can be measured with high accuracy.

  As described above, the rail advance measurement device according to the present invention can quickly align the reference point and the measurement point of each rail by using the laser beam, and can increase the work efficiency. . Since the amount of advancement of each rail can be measured with a single installation of a base at one measurement location, work efficiency is further improved. In addition, since the sliding direction can be measured by the measuring unit, the direction of rail displacement can be accurately measured.

  The measurement unit is preferably made of a device capable of zero setting at an arbitrary position, such as a commercially available digital caliper. In this case, by setting the laser beam to zero when the laser beam is set to the reference point, it is possible to directly display the deviation of the measurement point of each rail. Also, the slide direction can be displayed with a plus or minus sign, and the direction of rail displacement can be accurately measured. In order to prevent the wrong direction of rail displacement, it is preferable that the rail on which the base is installed is determined in advance on either the left or right side so that the same slide direction always has the same sign.

  In the rail advance measurement apparatus according to the present invention, the base has a reference member, and the reference member is provided to contact one side surface of the one rail when the base is installed on the one rail. It is preferable to have an adjusting screw for adjusting the sliding direction of the measuring unit to be parallel to the length direction of the one rail. In this case, the base can be easily installed by installing the base on one rail so that the reference member contacts one side surface of the one rail. The adjustment screw can be adjusted so that the sliding direction of the measurement part and the length direction of one rail are always parallel, so that the deviation of the measurement point of each rail from the reference point can always be measured accurately. .

  The rail advance measurement device according to the present invention has a guide member and a fixing magnet, and the guide member extends along a length direction of the rail when the base is installed on one rail, It is preferable that the base is provided so as to guide when the laser light emitting unit slides, and the fixing magnet is provided on the bottom of the base. In this case, the surface of the laser beam can be always irradiated perpendicularly with respect to the sliding direction by smoothly sliding the measurement unit and the laser light emitting unit so as not to rattle by the guide member. Thereby, the shift | offset | difference of the measurement point of each rail with respect to a reference point can always be measured correctly. Further, during the measurement, the base can be prevented from moving by the fixing magnet, and the measurement can be performed accurately.

  According to the present invention, it is possible to provide a rail advance measurement device that can accurately measure the direction of rail displacement and can improve work efficiency.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a rail advance measurement apparatus according to an embodiment of the present invention.
As shown in FIG. 1, the rail advancement measuring apparatus 10 includes a base 11, a measurement unit 12, a fixing magnet 13, a guide member 14, and a laser emission unit 15.

  The rail advance measurement device 10 measures the deviation of the measurement points 3a and 3b provided on the upper surfaces of the bases inside the rails 1a and 1b with respect to the reference point 2 provided between the left and right rails 1a and 1b. By doing so, the amount of advance of each rail 1a, 1b is measured.

  As shown in FIG. 1, the base 11 is elongated and the outer shape is substantially a rectangular parallelepiped. The base 11 is provided so that it can be installed on one rail 1a along the length direction of one rail 1a. The base 11 may be installed on the other rail 1b. The base 11 has a storage chamber 21 provided along the length direction from one end to the other end. The storage chamber 21 has an opening 21a provided from one side surface 11a of the base 11 to the bottom portion 11b along the length direction.

  The base 11 has reference members 22 at both ends of the side edge of the other side surface 11c on the bottom 11b side. The reference member 22 includes a protruding portion 22a protruding in the vertical direction with respect to the other side surface 11c, and a contact portion 22b provided at the tip of the protruding portion 22a and extending in the vertical direction toward the bottom side with respect to the protruding portion 22a. And an adjusting screw 22c provided on the contact portion 22b. When the base 11 is installed on one rail 1a, the reference member 22 is configured such that the contact portion 22b can contact the outer surface 1c of the one rail 1a. In addition, when the base 11 is placed on one rail 1a and the contact portion 22b is brought into contact with the outer surface 1c of the one rail 1a, the reference member 22 has the length direction of the base 11 on one side. It can be adjusted with an adjusting screw 22c so as to be parallel to the length direction of the rail 1a. The reference member 22 has a handle 23 on the other side surface 11c, and a switch 24 of the laser light emitting unit 15 at one end portion of the one side surface 11a.

  As shown in FIG. 1, the measurement unit 12 is made of a commercially available digital caliper, and is provided on the upper surface 11 d of the base 11. The measurement unit 12 includes a rail portion 25 provided in parallel along the length direction of the base 11 and a slide portion 26 provided so as to be slidable along the rail portion 25. The measuring unit 12 is configured such that when the reference member 22 is installed in parallel on one rail 1a, the sliding direction of the sliding unit 26 is parallel to the length direction of the one rail 1a. The measurement unit 12 includes a zero setting switch 27 on the slide unit 26, and zero setting at an arbitrary position of the slide unit 26 is possible. In this way, the measurement unit 12 can measure the sliding direction and the sliding amount from the predetermined position of the slide unit 26 and can display them on the liquid crystal panel 28 on the upper surface of the slide unit 26.

As shown in FIG. 1, the fixing magnet 13 is provided on the bottom 11 b of the base 11.
The guide member 14 is provided inside the storage chamber 21 of the base 11 and is attached to the base 11. The guide member 14 is provided so as to extend from one end portion of the storage chamber 21 to the other end portion in parallel to the rail portion 25 of the measurement unit 12. Thereby, the guide member 14 is extended along the length direction of the rail 1a, when the base 11 is installed on one rail 1a.

  As shown in FIG. 1, the laser emission part 15 is guided along the guide member 14, and is supported by the guide member 14 so that it can slide smoothly. The laser light emitting unit 15 is coupled to the slide unit 26 of the measurement unit 12 by a coupling member 29 through a long hole (not shown) provided on the upper surface 11 d of the base 11. For this reason, the laser light emission part 15 slides with the slide part 26. The laser light emitting unit 15 is configured to turn on / off the laser light by a switch 24 provided on the base 11.

  As shown in FIG. 2, the laser light emitting unit 15 includes a laser light emitter 30 and a cylindrical glass rod 31. The laser emitter 30 is made of a commercially available laser pointer. The laser light emitting unit 15 causes the laser light from the laser light emitter 30 to be incident on the glass rod 31 perpendicularly and refracted by the glass rod 31, so that the laser light is surfaced in a plane perpendicular to the glass rod 31. Irradiation is possible.

  As shown in FIG. 1, the laser light emitting unit 15 protrudes from the side edge on the bottom 11 b side of the opening 21 a of the storage chamber 21 and is provided so as to irradiate laser light toward the opening 21 a of the storage chamber 21. Further, the laser light emitting unit 15 is provided so as to be capable of surface irradiation in a plane perpendicular to the sliding direction when the base 11 is installed on one rail 1a. As shown in FIG. 3, the laser light emitting unit 15 has a laser beam in an angle range (shaded portion in FIG. 3) from the upper surface of the inner base of one rail 1 a to the upper surface of the inner base of the other rail 1 b. The surface irradiation is possible. Thereby, the laser emission part 15 can irradiate the reference point 2 provided between the left and right rails 1a and 1b, and the measurement points 3a and 3b provided on the base upper surface inside each rail 1a and 1b. It has become.

  In a specific example, when the base 11 is installed on one rail 1a, the rail advancement measuring apparatus 10 is set so that the deviation of the irradiation position of the laser beam on the other rail 1b is within 1 mm. It has been adjusted. Moreover, when the base 11 is installed on one rail 1a, the thickness of the surface irradiation of the laser beam on the other rail 1b is adjusted to be within 2 mm.

Next, the operation will be described.
The rail advancement measuring apparatus 10 is used as follows in order to measure the advancement amount of the left and right rails 1a, 1b such as the Shinkansen. In order to prevent the misalignment direction of the rails 1a and 1b, the rail on which the base 11 is installed is determined in advance on either the left or right side so that the same sign is always obtained with respect to the same sliding direction.

  As shown in FIG. 4, first, the base 11 is installed on one rail 1a along the length direction of one rail 1a so that the reference member 22 contacts the outer surface 1c of the one rail 1a. To do. At this time, the base 11 is installed by the adjusting screw 22c so that the sliding direction of the sliding portion 26 is parallel to the length direction of one rail 1a. Laser light is irradiated onto the surface by the laser light emitting unit 15 and the slide unit 26 and the laser light emitting unit 15 are slid to match the laser light to the reference point 2 provided between the left and right rails 1a and 1b (in FIG. 4). A). When the laser beam is adjusted to the reference point 2, the zero setting switch 27 is pressed to perform zero setting.

  Next, the slide part 26 and the laser light emission part 15 are slid, and a laser beam is matched with the measurement point 3a provided in the base upper surface inside one rail 1a (B in FIG. 4). When the laser beam is adjusted to the measurement point 3a, the display on the liquid crystal panel 28 of the measurement unit 12 is read. Furthermore, the slide part 26 and the laser light emission part 15 are slid, and a laser beam is matched with the measurement point 3b provided on the base upper surface inside the other rail 1b (C in FIG. 4). When the laser beam is adjusted to the measurement point 3b, the display on the liquid crystal panel 28 of the measurement unit 12 is read. Since the measurement unit 12 directly displays the deviation of the measurement points 3a and 3b of the rails 1a and 1b with respect to the reference point 2, measurement can be performed easily and with high accuracy. Moreover, since the slide direction of the slide part 26 is also displayed with a plus or minus sign, the direction of deviation of the rails 1a and 1b can be accurately measured.

  In the rail advance measurement device 10, the laser beam is irradiated in an angle range from the upper surface of the inner base of one rail 1 a to the upper surface of the inner base of the other rail 1 b in a plane perpendicular to the sliding direction. Therefore, the laser beam can be accurately and easily aligned with the reference point 2 and the measurement points 3a and 3b of the rails 1a and 1b perpendicular to the one rail 1a. In addition, by using the laser beam, the reference point 2 and the rails 1a and 1b can be quickly aligned with the measurement points 3a and 3b, and the working efficiency can be improved. Since the amount of advance of each rail 1a, 1b can be measured only by installing the base 11 once per measurement location, the working efficiency is further improved.

  The rail advance measurement apparatus 10 can easily install the base 11 by installing the base 11 on one rail 1a so that the reference member 22 contacts the outer surface 1c of the one rail 1a. it can. Since the adjustment screw 22c can be adjusted so that the sliding direction of the sliding portion 26 and the length direction of the one rail 1a are always parallel to each other, the measurement points 3a and 3b of the rails 1a and 1b with respect to the reference point 2 can be adjusted. The deviation can always be measured accurately. By the guide member 14, the slide part 26 and the laser light emitting part 15 can be smoothly slid so as not to rattle, and the laser light can always be surface-irradiated perpendicularly to the sliding direction. Thereby, the shift | offset | difference of the measurement points 3a and 3b of each rail 1a and 1b with respect to the reference point 2 can always be measured correctly. Further, during the measurement, it is possible to prevent the base 11 from moving by the fixing magnet 13, and it is possible to measure more accurately.

  The rail advance measurement device 10 can shorten the measurement time as compared with the case where measurement is performed using a ruler. In a specific example, the measurement time is reduced to about one third. In addition, it is gentle on the legs and legs because there is less squatting during measurement. Since the measured value is displayed on the liquid crystal panel 28, it is easy to read the measured value. Since installation and measurement are easy, the individual error of the measurement value by the operator can be reduced. Note that the rail advancement measuring apparatus 10 may be capable of moving the glass rod 31 of the laser emitting unit 15 left and right or up and down so that the irradiation range and illuminance of the laser light can be adjusted.

It is (a) top view, (b) front view, and (c) right side view showing a rail advance measuring device of an embodiment of the present invention. It is a side view which shows the laser light emission part of the rail advance measurement apparatus shown in FIG. It is a side view which shows the irradiation range of the surface irradiation of the laser beam of the rail advance measurement apparatus shown in FIG. It is a top view which shows the use condition of the rail advance measurement apparatus shown in FIG.

Explanation of symbols

1a, 1b Rail 2 Reference point 3a, 3b Measurement point 10 Rail advance measurement device 11 Base 12 Measurement unit 13 Fixing magnet 14 Guide member 15 Laser emission unit 21 Storage chamber 22 Reference member 23 Handle 24 Switch 25 Rail unit 26 Slide part 27 Zero setting switch 28 Liquid crystal panel 29 Connecting member 30 Laser emitter 31 Glass rod

Claims (3)

A rail advance measuring device for measuring the amount of advance of each rail by measuring the deviation of the measurement point provided on the upper surface of the inner base of each rail with respect to a reference point provided between the left and right rails. There,
Having a base, a measuring part and a laser emitting part,
The base is provided so as to be installable on one rail,
The measurement unit is provided so as to be slidable along the length of the rail with respect to the base when the base is installed on one rail, and the sliding direction and the sliding amount of the base from a predetermined position. Measuring and displaying
The laser emission unit is provided so as to be slidable with respect to the base together with the measurement unit, and when the base is installed on one rail, the plane of the rail is perpendicular to the sliding direction. It is possible to irradiate the laser beam from the inner base upper surface to the inner base upper surface of the other rail,
Rail advancement measuring device.   The base has a reference member, and the reference member is provided to contact one side of the one rail when the base is installed on one rail, and the sliding direction of the measuring unit is the one The rail advance measuring device according to claim 1, further comprising an adjusting screw for adjusting the rail to be parallel to a length direction of the rail. A guide member and a fixing magnet;
The guide member extends along the length of the rail when the base is installed on one rail, and is provided on the base to guide when the laser light emitting unit is slid,
The fixing magnet is provided at the bottom of the base,
3. The rail advance measurement device according to claim 1, wherein the rail advance measurement device is characterized in that:

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