JPH10141958A - Jig for measuring center of shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To measure the center of a shaft accurately while avoiding the risk of falling of a measuring person by disposing a reflection prism and a laser light irradiating section for measuring the distance accurately while combining with a light wave distance measuring instrument mounted on a steel tower movably in XY direction. SOLUTION: Horizontal angle and distance are measured between a steel tower body mounting a light wave distance measuring instrument and the center of drilled shaft in which a jig for measuring the center of shaft is set. When the measured angle and distance are different from design values, a frame Y12 moves a slider Y14 to correct the movement in Y direction while measuring parts on the upper and lower sides of a slider X15, i.e., a reflection prism 17 and a laser light irradiating part 18, move the slider X15 located on the other side of the frame X13 to correct the movement in the X direction. When the angle and distance to the center of shaft are measured again and they are different from design values, similar operation is repeated and the center of shaft is specified when the sliders are settled at specified intermediate positions in both X and Y directions. A laser light is emitted from the irradiating section 18 similarly to the prism 17 and the center of shaft is indicated on a reflective plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft shaft measuring jig.

[0002]

2. Description of the Related Art To construct a transmission line, it is necessary to construct a number of towers along the transmission line. Each of these multiple towers will be constructed at precise locations along the transmission line.

[0003] By the way, when constructing a new tower,
First, a central point of the position of the tower, that is, the main point of the tower, is designated by the power company to the company to be constructed.

[0004] A company that newly constructs a steel tower measures the position at which a pile or the like is driven into several places, for example, four places, using the main point of the steel tower as a reference point, and designates a designated radius centering on the position of the well. Excavate a shaft.

[0005] In this case, if the shaft is dug, the center of the mark will inevitably disappear by excavation. Moreover, since the shaft is dug by the operator and the excavating machine, it is practically difficult to accurately excavate the shaft within the designated shaft radius.

[0006] Therefore, in the actual shaft excavation work, after the completion of the excavation, it is necessary to accurately measure the pit core of the shaft excavated from the steel tower point designated by the electric power company in mm units.

FIG. 3 is an explanatory perspective view showing a conventional method for measuring the position of the core of a shaft excavated.

In FIG. 3, 1 is an excavated shaft, 2 is a measuring scaffold hung on the upper end of the shaft 1, 3 is a safety fence, 4 is T-tension (method), 5 is T-tension leg, 6 is a measurer, 7 is a safety fence 3
A security rope that connects the arm of the measurer 6 to the arm, 8 is a down bobbin, 9 is a weight, and 10 is a shaft of the shaft 1.

That is, the core 10 of the excavated shaft 1 is measured as follows.

First, a measuring scaffold 2, a safety fence 3 and a T-Chang 4 are hung on the upper end of the excavated shaft 1.

Next, the measurer 5 rides on the hung measurement scaffold 2, measures the horizontal distance of the T-junction 4, obtains the center point of the T-junction 4, and marks it with a magic pen or the like.

Next, a down swing line 8 having a weight 9 at the lower end from the center point of the marked T-tension 4 is lowered to the lower end of the shaft 1, and is marked with the weight 9 attached to the tip. .

Next, a point marked by a weight 9 attached to the tip of the down pendulum 8 is specified as a shaft 10 of the shaft 1.

The work for hanging the measuring scaffold 2, the safety fence 3, and the T-clad 4 and the measuring work are performed in two directions so as to cross the shaft 10 of the shaft 1.

However, the conventional method of measuring the shaft core 10 of the shaft 1 has the following problems.

At the time of the measurement, the measurement scaffold 2, the safety fence 3 and the T-junction 4 are hung on the upper end of the excavated deep and wide shaft 1, and the security moving rope 7 is hung on the measurer. Requires a lot of man-hours.

The measurer moves the measuring scaffold 2 hung on the upper end of the shaft 1 excavated deeply to perform measurement at a high place, and thus there is a danger of falling accident.

The measurer 5 measures the horizontal distance of the T-stretch 4, finds the center point of the T-stretch 4, marks it with a magic pen or the like, and then weights the lower end from the center point of the marked T-stretch 4. The down-swing line 8 with 9 is lowered to the lower end of the shaft 1 and marked with the weight 9 attached to the tip of the shaft, and the measurement accuracy is affected by human error and wind. Is inferior.

[0019]

SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and an object of the present invention is to solve the above-mentioned drawbacks of the prior art, to eliminate the danger of dropping by a measurer and to provide a high-level object. It is an object of the present invention to provide a shaft shaft measuring jig capable of measuring a shaft shaft with high accuracy.

[0020]

SUMMARY OF THE INVENTION The gist of the present invention is that a counterweight is attached to one end, and a slider X is attached to the other intermediate portion. The slider X is movable in the X direction, and a reflection prism is installed on the upper part of the slider X, and a lower part of the frame is provided with a laser beam irradiating part. And a frame Y movable in the Y direction.

The vertical shaft core measuring jig of the present invention is provided with a reflecting prism and a laser beam irradiator capable of accurately measuring the distance, and is movably mounted in the X and Y directions. By combining with a lightwave distance measuring instrument installed at this point, measurement up to the excavated pit and setting adjustment thereof can be performed quickly, easily and accurately.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a shaft shaft measuring jig of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of a shaft shaft measuring jig according to the present invention. FIG. 1A is a plan view. FIG. 1B is a side view.

In FIG. 1 (a), 11 is a shaft shaft measuring jig, 12 is a frame Y, 13 is a frame X, 14 is a slider Y, 15 is a slider X, and 16 is a counterweight. In FIG. 1B, reference numeral 17 denotes a reflection prism, and reference numeral 18 denotes a laser beam irradiation unit.

That is, in one embodiment of the vertical shaft center measuring jig of the present invention, the frame Y12 is connected to the vertical shaft Y via the slider Y14.
It can move in the direction, and the frame X13 is the slider X1
5 so as to be movable in the X direction. A counterweight 16 is installed at one end of the frame X13. Also, this frame X1
A reflection prism 17 is installed on the upper side of the slider X15 in the middle part of the other side of 3, and a laser beam irradiator 18 is installed on the lower side of the slider X15.

Next, a description will be given of a method of measuring the shaft shaft of a shaft using the shaft shaft measuring jig of the embodiment of the present invention.

FIG. 2 is an explanatory perspective view showing a state in which the shaft shaft of the shaft is measured by the shaft shaft measuring jig of one embodiment of the present invention.

In FIG. 2, 1 is a shaft, 10 is a shaft, 12
Denotes a frame Y, 16 denotes a counterweight, 19 denotes a steel tower main point, 20 denotes a lightwave distance measuring instrument, and 21 denotes a leg of the lightwave distance measuring instrument 20.

In FIG. 2, the frame Y12 is fixed to the wall of the shaft 1 via a fixture (not shown).

The frame Y12 is movable in the Y direction via a slider X16.

The frame X13 has a slider X15.
Can be moved to a predetermined position in the X direction.

A reflection prism 17 is mounted on the upper side of the slider X15, and a laser beam irradiator 18 is mounted on a lower side of the slider X15. Therefore, the reflecting prism 17 and the laser beam irradiating section 18 can be moved to an arbitrary position in the X direction with the movement of the slider X15.

Although not shown, a reflecting plate or the like for reflecting laser light is provided at the lower end of the shaft 1, that is, at the floor, so that the shaft 10 of the shaft 1 can be displayed.

Further, in the measurement, the lightwave range finder 20 is installed on the designated tower point.

Next, using the shaft measuring jig of the embodiment of the present invention and the light wave distance measuring instrument 20, the steel tower having the light wave distance measuring instrument 20 and the shaft shaft of the embodiment of the present invention will be described. The horizontal angle and horizontal distance of the excavated shaft 1 on which the core measuring jig is placed to a point that is considered to be the core 10 are measured. Next, when the measured horizontal angle and horizontal distance are different from the design values, the frame Y12
Moves the slider Y14 and corrects it in the Y direction,
Also, the measurement parts on the upper and lower sides of the slider X15,
That is, the reflecting prism 17 and the laser beam irradiating unit 18 move the slider X15 located at the intermediate portion on the other side of the frame X13 to correct and move the slider X15 in the X direction.

Next, the horizontal angle and the horizontal distance to the point which is considered to be the shaft 10 of the excavated shaft 1 on which the shaft measuring tool of the embodiment of the present invention set again is placed are measured again.

Similarly, when the measured horizontal angle and horizontal distance are different from the design values, the frame Y12 is moved in the Y direction by moving the slider Y14, and the measuring portion attached to the upper and lower sides of the slider X15 is That is, the reflection prism 17 and the laser beam irradiation unit 18
The slider X15 located at the intermediate portion on the other side of No. 3 is moved and corrected in the X direction.

The same operation is repeated in the X direction and the Y direction.
When the direction is at a predetermined intermediate position, the position is specified as the shaft 10 of the shaft 1.

Lastly, similarly to the reflection prism 17, a laser beam is irradiated from a laser beam irradiating section 18 integrally attached to the shaft shaft measuring jig 11 of one embodiment of the present invention, and The pit core 10 of the shaft 1 is displayed at the lower end, that is, on a reflection plate that can reflect the laser light installed on the floor panel.

[0040]

The shaft measuring jig according to the present invention does not require a measurer to perform measurement by dropping on a shaft which may be dropped.
It can be measured from around the shaft, and since it is a measurement using laser light, accurate measurement can be performed, and is industrially useful.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a shaft shaft measuring jig according to the present invention. FIG. 1A is a plan view. FIG.
(B) is a side view.

FIG. 2 is an explanatory perspective view showing a state in which the shaft shaft of the shaft is measured by the shaft shaft measuring jig of one embodiment of the present invention.

FIG. 3 is an explanatory perspective view showing a conventional method for measuring the shaft center of a shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical shaft 2 Measurement scaffold 3 Safety fence 4 T tension 5 T tension leg 6 Measurer 7 Security movement rope 8 Down swing thread 9 Weight 10 Core 11 Vertical shaft core measurement jig 12 Frame Y 13 Frame X 14 Slider Y 15 Slider X 16 Counter weight 17 Reflecting prism 18 Laser beam irradiation part 19 Main point of steel tower 20 Light wave range finder 21 Leg

Claims (1)

[Claims] 1. A counterweight is mounted on one end of the slider, and a slider X is mounted on an intermediate portion on the other side, and can be moved in the X direction via the slider X. A reflection prism is provided on an upper part, and a frame X on which a laser light irradiation part is provided on a lower side thereof, and a frame Y crossing the frame X and movable in the Y direction. A vertical shaft core measurement jig.