JP2007163394A - Angle measurement device between two points of leveling-string type - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measurement instrument, capable of measuring the inclination angle between two points, at a job site for construction and civil work, in accurate and simple manner and in a short time. <P>SOLUTION: In order to arrange a measurement reference line 3, in a body 1 as the absolute reference line of an angle and display the position angle of the measurement reference line 3, an angle indicator is mounted. In order to extend the position angle up to an arbitrary measurement point, a leveling string 4 is regarded as an indicating string, and one end of the reference string 3 is operated as the reference point. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an angle measuring instrument for measuring an inclination angle between two arbitrary points accurately, simply, and in a short time.

  When obtaining an inclination angle between two distant points at a civil engineering construction site, a building construction site, or the like, several points between the two points are measured using an angle measuring device that can obtain only a single point angle. In addition, a measurement method using an optical instrument called transit may be used.

  On the other hand, as an example of the prior art in which an angle between two distant points can be measured or set, in Patent Document 1, a protractor is used as a display unit, and the protractor is moved or measured by a water thread. Further, Patent Document 2 is a method of measuring by combining a tape measure and an angle meter, and Patent Document 3 is a technique using a stringing material. Further, Patent Documents 4 and 5 have been previously filed by the present applicant and can be said to be prototypes of the present invention.

  However, in an angle measuring device that requires only a single point angle, the inclination angle is often different at each measurement point, and optical instruments such as transit require time and labor for installation and measurement.

  On the other hand, the thing of patent document 1 seems to have a narrow range of the measurable angle. In Patent Document 2, the tape measure is affected by the state of the measurement surface. Patent Document 3 takes time and effort to install.

In Patent Document 4, the angle is measured by combining a protractor, a bubble level, and a water thread. There is a problem that the measurement accuracy is affected by the fact that the size that can be indicated by the water thread is limited depending on the size of. If the diameter of the protractor is increased in order to increase the measurement accuracy, the measuring instrument itself becomes larger and it becomes difficult for the measurer to handle.
The thing of patent document 5 cannot measure an angle other than these, since invention itself is what specialized in the measurement of horizontality and perpendicularity. However, since the measurement display line has a sufficient length, the measurement display line has a characteristic that visibility is good when the measurement display line coincides with the water yarn as the indicator thread.
Japanese Utility Model Publication No. 57-13915 Japanese Utility Model Publication No. 4-69702 Japanese Utility Model Publication No. 56-16811 JP 2003-28637 A JP 2004-170402 A

  Provided is an angle measuring device capable of measuring an inclination angle between two distant points accurately and simply in a short time.

In the present invention, a measurement reference line 3 is provided in the measurement unit 2 of the main body 1 and then an angle display for displaying an angle from 0 degree to 90 degrees in order to display the angle in synchronization with the position angle of the measurement reference line 3. A meter is installed.
Then, the water thread 4 is operated with the water thread outlet 9 as one end of the measurement reference line 3 as a base point. The water thread 4 extends the position angle of the measurement reference line 3 to an arbitrary measurement point.

  As a result, the measurer uses the water thread 4 to connect the device to an arbitrary measurement point, and by grasping the grip 8 and pulling the water thread 4, the water thread 4 is sufficiently stretched, and the measurement standard The inclination angle between two points can be measured by matching the line 3 and reading the angle indicated on the angle indicator at that time.

  The angle indicator is either a dial indicator 5, an arc-shaped bubble tube indicator 21, an adjustable dial indicator 23, or a digital indicator 26.

  In the present invention, since the water yarn 4 is used while being floated from the measurement surface, the influence from the measurement surface is small. The measurable angle is also wide from 0 degrees to 90 degrees, and the measurement accuracy is improved by improving the visibility when the water string 4 and the measurement reference line 3 are matched. Although it is an angle measuring instrument that can be easily handled from these things, it is possible to measure an accurate angle and save work time.

In the present invention, the measurement reference line 3 is provided on the main body 1, the position angle is displayed on the angle indicator, and the measurement method is used to extend the measurement reference line 3 to an arbitrary measurement point by the water thread 4. It is necessary to take into account the visibility of the angle indicator. In addition, it is desired to devise the shape of the grip portion 8 including the finger hole 7 for applying tension to the water thread 4. For ease of use, a water thread stopper 12 is provided so that it can be firmly fixed so that it does not come off when the water thread 4 is pulled.

  Hereinafter, the angle measuring device between two points of the water yarn type of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of Embodiment 1 of the present invention. The main body 1 having a shape close to the letter “L” or “P” has a narrow rectangular portion provided with a measurement reference line 3 starting from the water thread outlet 9 from the portion where the dial indicator 5 is attached to the measuring portion 2. It consists of up to. The water thread drawing port 9 becomes an operation base point of the water thread 4. In addition, a gripping portion 8 including a finger hole 7 for passing a finger when gripped is provided adjacent to the measurement portion 2.

  The bottom surface portion 10 is parallel to the measurement reference line 3, and this bottom surface portion 10 is applied to the slope when measuring an inclination angle such as a slope. Further, the dial type indicator 5 described above is divided 90 degrees to the left and right with the degree scale of 0 degree. The pointer 6 of the dial type indicator 5 is rotated by gravity. When the above-described measurement reference line 3 is in the horizontal position, the pointer 6 indicates 0 degree and in the vertical position, it indicates 90 degrees. That is, according to the change in the position angle of the measurement reference line 3, the angle indicated by the pointer 6 also changes on the division scale within the range of 0 degrees to 90 degrees.

  FIG. 2 is a side view of the main body 1. The water thread 4 is inserted into one end of the water thread retaining hole 13 in the water thread retaining 12 attached to the back side of the main body 1, passes through the water thread retaining hole 13, and then passes through the water thread passing hole 11. The measurement reference line 3 is indicated as an indicator thread after passing through and pulled out from the water thread outlet 9 and stretched between an arbitrary measurement point.

  FIG. 3 is an enlarged view of a main part of FIG. The water thread stopper 12 includes a female thread 51 and a male thread 52 having a water thread retaining hole 13 formed therein, and the water thread 4 is inserted from one end of the water thread retaining hole 13. Then, after the female screw 51 is attached to the male screw 52, the water thread 4 is pressure-bonded and fixed.

  FIG. 4 is a drawing of an example of use in which the inclination angle of the slope 31 is measured using the water thread type angle measuring device between two points of the present invention. The water thread 4 drawn out from the water thread drawing port 9 is lifted from the slope 31 by a dimensional difference 41 in the vertical direction between the bottom surface portion 10 and the measurement reference line 3 on the bar pile 32, and is connected to an arbitrary one. The measuring point 33 is set, and the measurer fully stretches the water string 4 by grasping the grip 8 and handling the instrument while pulling the bottom surface 10 of the instrument against the slope 31. Then, when the water string 4 is aligned with the measurement reference line 3 and the angle indicated by the pointer 6 of the dial type indicator 5 at that time is read, the measurement is completed, and the display angle becomes the inclination angle.

  In Example 1, an example of the method for measuring the inclination angle of the slope 31 using this device was shown. However, in each measurement, the measurement is performed by using two units and sharing the water string 4 rather than taking into account the vertical dimension difference 41 between the bottom surface portion 10 and the measurement reference line 3. However, it is not necessary to pay attention to the vertical dimension difference 41 between the bottom surface portion 10 and the measurement reference line 3, which is reasonable.

  In FIG. 5, an angle measuring device B between two points of the water thread type in which main structures such as the gripping portion 8 and the measuring portion 2 of the angle measuring device of Example 1 are reversed left and right is disclosed. Hereinafter, this type is referred to as a water thread type angle measuring device B between two points. And let the thing of FIG. 1 be the angle measuring device A between the two points of the water thread type.

  FIG. 6 is a state diagram in which the inclination angle of the slope 31 is measured by the angle measuring device A and the angle measuring device B between the two points of the water thread type. At this time, the water threads 4 drawn from the water thread outlets 9 of each other have a shared shape, each measurer has a grip 8 of each angle measuring device, and the bottom face 10 is a slope. In order to apply tension to the shared water thread 4 while being applied to 31, each draws the water thread 4 and stretches it sufficiently. And it shows that the said water thread 4 matched with the measurement reference line 3 of each angle measuring device, and confirms that the pointer 6 of each dial type indicator 5 shows the same angle on the division scale. Then, the measurement is completed, and the display angle becomes the slope angle of the slope.

  FIG. 7 uses an arc-shaped bubble tube type indicator 21 instead of the dial type indicator 5 of the first embodiment as an angle indicator. A bubble 22 is included in the arc-shaped bubble tube type indicator 21 to indicate a division scale, and the bubble 22 moves in response to a change in the position angle of the measurement reference line 3 to indicate the division scale. Therefore, the measurement angle can be obtained by reading the value.

  FIG. 8 shows that the inclination angle of the slope 31 is measured using the angle measuring device A and the angle measuring device B between the two points of the water thread type using the arc-shaped bubble tube type indicator 21. It is a drawing. At this time, the water thread 4 drawn out from the water thread drawing port 9 of each angle measuring device is shared by the angle measuring devices. And each measurer holds the gripping part 8 of each of the angle measuring devices, and applies tension to the shared water thread 4 while applying the bottom surface part 10 to the slope 31. Sufficiently stretch. After that, it shows that the water thread 4 has been matched with the measurement reference line 3 provided on the main body 1 of the two angle measuring devices, and the bubbles 22 of the arc-shaped bubble tube type indicator 21 are in proportion to each other. If it is confirmed that the same angle is shown on the scale, the measurement is completed, and the display angle becomes the slope angle of the slope.

  FIG. 9 shows an angle indicator using an adjustable dial indicator 23 instead of the dial indicator 5 of the first embodiment. In the case of measurement, the angle to be measured is set in advance to the division scale provided in the adjustable dial indicator 23 by the angle adjustment knob 25, and is set if the bubble in the level gauge 24 indicates the level at the time of measurement. It becomes an angle. When measuring the inclination angle of the slope 31 using the angle measuring device A and the angle measuring device B between two water thread type two points, it is the same as the above-mentioned embodiment.

  FIG. 10 shows a digital display 26 having a built-in gravity sensor instead of the dial display 5 of the first embodiment as an angle display. If the position angle of the measurement reference line 3 changes, the angle displayed on the digital indicator 26 also changes, and the angle is read as a measurement value. When measuring the inclination angle of the slope 31 using the angle measuring device A and the angle measuring device B between two water thread type two points, it is the same as the above-mentioned embodiment.

It is a perspective view of the angle measuring device between the two points of water thread type which attached the dial type indicator of the present invention. It is a side view of FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is drawing of the inclination-angle measurement in the slope 31 using the angle measuring device between the two points of the water thread type which attached the dial type indicator. It is a front view of the angle measuring device B between the two points of water thread type which attached the dial type indicator. It is drawing of the inclination-angle measurement in the slope 31 using the angle measuring device A and B between the water thread type | formula 2 points | pieces which attached the dial type angle indicator. It is a front view of the angle measuring device A between the two points of the water thread type which attached the arc-shaped bubble tube type indicator. It is drawing of the inclination-angle measurement in the slope 31 using the angle measuring device A and B between the water thread type | formula 2 points | pieces which attached the circular-arc-shaped bubble tube type | mold indicator. It is a front view of the angle measuring device A between the two points of water thread type which attached the adjustment type dial indicator. It is a front view of the angle measuring device A between the two points of water thread type which attached the digital indicator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Measuring part 3 Measurement reference line 4 Water thread 5 Dial type indicator 6 Pointer 7 Finger penetration hole 8 Gripping part 9 Water thread extraction port 10 Bottom part 11 Water thread passage hole 12 Water thread stopper 13 Water thread stopper hole
21 Arc-shaped bubble tube indicator 22 Bubble 23 Adjustable dial indicator 24 Level 25 Angle adjustment knob 26 Digital indicator 31 Slope 32 Bar pile 33 Arbitrary measurement point 41 Between bottom 10 and measurement reference line 3 Dimensional difference in the vertical direction 51 Female thread 52 Male thread

Claims (3)

A measurement reference line (3) provided on the main body (1) and an angle indicator attached to the main body (1) for displaying the position angle of the measurement reference line (3) and the measurement reference line (3) An angle measuring device between two points of the water thread type, characterized in that it consists of a water thread (4) for extending the position angle of the head to an arbitrary measuring point. The angle measuring device between two points of the water thread type according to claim 1, wherein an angle indicator is attached to a plane parallel to the plane on which the measurement reference line (3) is provided. The angle indicator is any one of a dial indicator (5), an arc-shaped bubble tube indicator (21), an adjustable dial indicator (23), or a digital indicator (26). 1. An angle measuring device between two points of the water thread type according to 1.

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