JP2926101B2 - Vertical measurement system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a verticality measurement system applied to, for example, the construction of a steel column in the fields of civil engineering and construction.

[Prior art] Conventionally, in the fields of civil engineering and construction, for example, in the construction of a steel column, the rebuilding of the column for vertically constructing the steel column is performed by swinging down from the head of the steel column or by using a vertical rod. The dimensions of the steel column head and legs are measured and corrected.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional method, there is a limit to the height at which the inspection can be performed, and it is difficult in a high-rise building. Further, there is a problem that it takes time for manpower and work, and the measurement accuracy is poor due to the influence of wind and the like.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a verticality measuring system capable of performing high-accuracy measurement in, for example, measuring the verticality of a steel column of a high-rise building.

[Means for Solving the Problems] For that purpose, a verticality measuring system according to the present invention comprises a rotating table 2 fixed to known coordinates, a light emitting unit 3 disposed on the rotating table 2 and projecting a laser in a vertical direction. A light receiving unit 6 fixed to the head of the device to be measured and formed of a photodiode matrix;
And a control unit 7 that compares the position coordinates calculated based on the trajectory of the laser light with the known coordinates of the light emitting unit 3 and calculates and outputs a deviation between the two positions.

The numbers added to the above configuration are for comparison with the drawings for easy understanding, and do not limit the configuration of the present invention at all.

[Operation] In the present invention, the known coordinates of the light emitting unit 3 and the light receiving unit 6
And compares the received position coordinates with the known coordinates in the X and Y directions on the screen, and outputs the deviation to the printer.
Based on the result, the correction of the insertion of the steel column is performed, and the correction is performed to the known coordinates.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram for explaining a verticality measuring system of the present invention.

The verticality measuring system according to the present invention includes a base 1, a turntable 2 fixed to the base 1, a light emitting unit 3 disposed on the turntable 2, a light receiving unit 6 attached to a steel column 4 by a mounting bracket 5, and The control unit 7 is connected to the light receiving unit 6.

The base 1 is a jig for fixing the turntable 2 and the light-emitting unit 3 to a position that has been marked in advance. The turntable 2 is rotated by a sensor attached to a lower part of the light-emitting unit 3 in advance. It is a mechanism that rotates in one direction by number. Light emitting unit 3
Is a device that emits a laser beam in the vertical direction.

The turntable 2 corrects the measurement accuracy in the vertical direction. Even if the base 1 is installed at a position that has been marked in advance, a positional shift occurs. May deviate from the predetermined position, or the laser beam may deviate from the true vertical line over a long distance. In this case, the turntable 2 reverses the angle from 0 ° to 180 ° to obtain an average value. Is the x value, for example, from 90 ° to 270 °
Invert and determine this as the y value. As described above, the true measurement position in the vertical direction can be determined by automatically rotating the turntable 2 once, and sometimes two or more times. Therefore, the true vertical position accuracy can be measured in a shorter time than in manual operation.

The light receiving section 6 has a visible light blocking film, is composed of a photodiode matrix for detecting a position in the X and Y directions, and searches for a trajectory of the laser light for a predetermined time to obtain a swing width and a luminance of the laser light. , And measurement parameters such as a measurement area are transmitted to the control unit 7. Also,
The data obtained by the light receiving unit 6 is transmitted to the control unit 7 every cycle.

The control unit 7 receives the position data of the laser beam from the light receiving unit 6 and performs data processing and analysis such as the calculation of the center of gravity in the central processing unit. The received position coordinates are compared with each other, and the deviation from the known coordinates in the X and Y directions is displayed on a screen and output to a printer. Based on the result, the correction of the insertion of the steel column is performed, and the correction is performed to the known coordinates.

Further, the position of the light receiving unit 6 and the light emitting unit 3 is shifted by a predetermined distance,
By measuring the points, the rotation (twist) of the measured object can be measured.

[Effects of the Invention] As described above, according to the present invention, by arranging the light emitting unit on the turntable and rotating the light emitting unit, even if the light emitting position of the laser is deviated from the predetermined position, the locus of the laser light is The position in the true vertical direction can be calculated. For example, in a high-rise building, the verticality can be easily measured simply by attaching a light receiving section to the head of an object to be measured, for example, a steel column head.

In addition, only by checking the control unit, the current installation accuracy can be grasped, and the positioning time can be greatly reduced.

Furthermore, since the verticality from the lower end (ground) is always measured, the measurement accuracy can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram for explaining a verticality measuring system of the present invention. 2 ... turntable, 3 ... light-emitting unit, 6 ... light-receiving unit, 7 ... control unit.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yasuo Kageyama 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (56) References JP-A-49-120662 (JP, A) JP-A-63 -217213 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01C 15/00 G01C 9/00-9/36

Claims (1)

(57) [Claims] 1. A rotating table fixed to known coordinates, a light emitting unit disposed on the rotating table and projecting a laser beam in a vertical direction, and a photodiode matrix fixed to a head of an object to be measured. The light receiving unit, which is received by rotating the rotary table, is received by the light receiving unit, and the position coordinates calculated by the trajectory of the laser light are compared with the known coordinates of the light emitting unit, and the displacement between the two is calculated, A verticality measuring system comprising a control unit for outputting.