JPS5953486B2 - flat plate surveying device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a flat plate surveying device.

More particularly, the present invention relates to a flat surveying device comprising a combination of a flat surveying machine and a right angle pole.

Traditionally, surveyors used tape to measure the distance between the origin and the measurement point.

However, if there is an obstacle between the origin and the measurement point, such as a pond, it may be difficult to use the tape, or if the obstacle is uneven, it may cause errors, or wind force may prevent the tape from being stretched straight. There were drawbacks.

The present inventor intended to develop a surveying device that does not use tape, and accomplished the present invention.

An object of the present invention is to provide a novel flat surveying device.

The present invention provides two markers at each end of the short axis and the long axis, a circular level on the long axis, an alidade or a telescope on the short axis, and the long axis and the short axis. An L-shaped right-angled pole is provided with a cylindrical leg attached perpendicularly to the lower refracting edge of the refracting blade, and a folding support leg is provided below the long axis, and the origin is set along the long side of the rectangular substrate or parallel to the long side. providing a baseline along which the marker passes, and providing a straight line parallel to the baseline on the substrate at a distance obtained by multiplying the projected length of the sign onto the long axis of the pole by a predetermined scale used for surveying; A scale of the reduced scale is provided on the parallel straight line with the intersection of a straight line passing through the origin and orthogonal to the base line and the parallel straight line as a base point, and a rotation pointer is provided on the board with the origin of the base line as a pivot point. ,
This is a flat plate surveying device characterized in that it is combined with a flat plate surveying machine having an alidade or a telescope on the above-mentioned pointer.

Next, the present invention will be explained in detail with reference to the drawings.

1 and 2 show an L-shaped right-angled pole 1 according to the present invention.

In FIG. 1, the L-shaped right-angled pole 1 consists of a combination type first pole member 1a and second pole member 1b, the first pole member 1a is bent at right angles in the L shape, and The alidade 5 is provided so that it can be raised and lowered freely.

A marker M is hinged to the end of the short shaft 2.

Further, leg holes 6a are provided below the bent portions of the long axis 3 and the short axis 2, and the cylindrical membrane 6 can be vertically erected downward in the leg holes.

A mark N is rotatably attached near the tip of the second pole member 1b forming a part of the long axis 3.

A fitting fitting 9 for engaging with the end of the first pole member 1a is fixed to the other end.

A leveler 4 is provided above the long shaft 3, and a foldable support leg 7 is hinged below with a hinge 8 so as to be able to rise and fall.

FIG. 2 shows the state in which the first pole member 1a and the second pole member 1b are assembled by a fitting fitting 9 for use.

In this figure, markers M and N are erected at the ends of the minor axis 2 and major axis 3, respectively, for surveying purposes.

Instead of providing the marker M at the tip of the short shaft 2, the marker M is placed at the right angle bending part corresponding to the base end of the short shaft 2, so that it can be freely rotated so that it is in the same plane as the upright marker N. It can also be provided in

In use, the right-angled pole 1 is held horizontally by means of the cylindrical membrane 6 and the support legs 7 and by the level 4.

The distance between M and N projected onto the long axis 3 is preferably 2500 mm.

3 and 4 show a flat plate surveying machine 10 according to the present invention,
An alidade and a telescope 5 are mounted on the rotating pointer 13 on the base plate 11, respectively.

In the example of FIG. 3, a base line py passing through the origin p is provided along the long side 12 of the rectangular substrate 11.

In the example of FIG. 4, the base line py is provided slightly apart from the long side 12 and parallel to the long side.

If the projected length of the markers M and N attached to the L-shaped right-angled pole 1 onto the long axis 3 is, for example, 2500 mm, and the desired scale for surveying is 17250 mm, then the projected length is multiplied by the scale. length.

A straight line p1y1 parallel to the base line py is provided on the substrate 11 at a distance of 10 mm from the base line.

Then, a scale scale of 1/250 is applied to the straight line p1y1 using the intersection point p□ of the straight line px passing through the origin p and perpendicular to the base line py and the straight line p1y1 as a base point.

If the desired scale is 17100, is the length obtained by multiplying the projected length by the scale.

Therefore, a straight line p2y2 parallel to the base line py is provided on the substrate 11 at a distance of 25 mm from the base line py.

Then, a scale scale of 17100 is applied on the straight line p2y2.

Similarly, if the desired scale is 1750, we get
A straight line p3y3 parallel to the base line py is provided on the substrate 11 at a distance of 50 mm from the base line, and a scale scale of 1750 is provided on the straight line p3V3.

Similarly, although not shown, if the desired scale is 1725, 100 mm is obtained, a straight line p4Y4 parallel to the base line py is provided on the substrate 11 at a distance of 100 mm from the base line py, and a scale scale of 1725 is placed on the straight line p4y4. give

In this way, the desired scale scale is set to the parallel straight line p1y1. p2y2. p3y3・・・・・・・・・
When this is done, the flat plate surveying machine according to the present invention is completed.

In the figure, numeral 15 is an angular scale for checking the survey results if desired.

The flat plate surveying device of the present invention will be explained with reference to FIGS. 3 and 5.

In FIG. 5, plyl is a parallel straight line parallel to the base line py provided on the flat surveying machine 10 as described above.

In addition, in the example of this figure, the L-shaped right angle pole 1 with the marks M and N
The projected length onto the major axis 3 is MlN, which is 2500 in this example.
It is mm.

The distance between the base line py and the parallel line p1y1 has a desirable scale of 1.
/250, it is 10 mm.

First, the surveyor determines the measurement point M1 and the origin p, holds the L-shaped right-angled pole 1 with the foldable support leg 7 upright, and holds the pole horizontally using the level 4 so that the cylindrical membrane 6 is aligned with the measurement point M1. Then, the origin p is referenced by, for example, an alidade 5 on the minor axis 2.

In this case, the short axis 2 and long axis 3 of the pole are at right angles, so MlN is perpendicular to pMl, and pMlN
is a right triangle.

Next, the left edge of the rotary pointer 13 of the flat surveying machine 10 is aligned with the edge of the long side 12 of the rectangular substrate 11, and the measuring point M1 is determined by the alidade 14 of the machine.

Next, the substrate is fixed, and only the rotating pointer 13 is rotated to the right to match the mark N.

In the right triangle pM1N, rl is the intersection of the rotation pointer 13 and the parallel straight line p1y1, and r is the intersection of the perpendicular line drawn from rl onto the base line py.

Therefore, right triangles pM1N and prrl are similar triangles, and right triangle prr1 = right triangle r1p1p, and rrl is 10 even though MlN is 2500 mm te.
mm, and plyl is scaled by 1/250, so if you read plrt on the scale scale, you will immediately get plrt.
You can read the distance of Ml.

p2y2.1)aVa, 1)4 with other scales
If Y4 is used, the scale ratio will be larger, so more precise readings can be taken.

The flat surveying machine 10 of the invention is equipped with an angular graduation 15 so that the scale graduation can also be ascertained by calculation if desired.

For example, if the reading of the angle scale 15 during measurement is h, the distance pM1 between the origin p and the measurement point M1 is pM1 = 2500
mm

According to the present invention, there are the following effects.

■ It is not necessary to use a surveying tape, making distance measurement easy even in areas with heavy traffic or where there are obstacles such as ponds or marshes.

■ Since no tape is used, there is no need to consider tape errors.

■ Since no tape is used, there are no misreadings caused by it.

■ Since no tape is used, there are no errors caused by wind force or unevenness.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an L-shaped right-angle pole according to the present invention, FIG. 2 is an assembled perspective view of the same, FIG. 3 is a perspective view of an example of a flat plate surveying machine according to the present invention, and FIG. The figure is a perspective view of another example, and FIG. 5 is a conceptual diagram showing the principle and usage of the flat plate surveying device of the present invention. 1...L-shaped right angle pole, 1a...first pole member, 1b...second pole member, 2...
...Short axis, 3...Long axis, 4...
Circular level, 5...Alidade, telescope, 6...
...Cylindrical body, 6a...Leg hole, 7...
・Foldable support legs, 8...Hinges, 9...
・Fitting metal tool, 10... Flat plate surveying machine, 11...
・Rectangular board, 12...Long side, 13...
・Rotating pointer, 14...Alidade, telescope, 1
5... Angle scale, M... Sign, Ml.
...Measurement point, N...Mark, p...
・Origin, px... A straight line passing through the origin and orthogonal to the baseline, py... Baseline, pl, p2. p3. p4・
...Base point, p13'l, p2'l'2゜1)a
Ya, p43'4... straight line parallel to the base line, px
・・・・・・Orthogonal line to the base line passing through p, rl...
...The intersection point of the rotation pointer and the straight line p1y1, r...
・Intersection of base line py and perpendicular line passing through rl, y...
Points on the baseline passing through the origin, yl, y2°y3. y4...
...points on each parallel line.

Claims (1)

[Claims] Twelve markers are provided at each end of the short axis and the long axis,
A circular level is provided on the long axis, an alidade or telescope is provided on the short axis, and a cylindrical leg is installed perpendicularly to the refractive lower cutting edge of the long and short axes, and a foldable support is provided below the long axis. An L-shaped right-angled pole with legs and a base line passing through the origin along the long side of the rectangular board or parallel to the long side, and the projection length of the sign onto the long axis of the pole is used for surveying. A straight line parallel to the base line is provided on the substrate with a length obtained by multiplying by the predetermined scale used, and the parallel line is set at the intersection of the parallel line and the straight line passing through the origin and perpendicular to the base line. It is characterized by a combination with a flat surveying machine in which a scale of the scale mentioned above is provided on a straight line, a rotary pointer is provided on the substrate with the origin of the base line as the axis, and an alidade or a telescope is provided on the pointer. A flat plate surveying device. 2. The flat surveying device according to claim 1, wherein the projection distance of the two markers of the L-shaped right angle pole to the long axis is 2500 mm. 3 1/2 on a straight line parallel to the base line on the board of the flat surveying machine
2. The flat plate surveying device according to claim 1, wherein the flat surveying device is provided with scale graduations of 50.1/100.1150 and 1/25.