JP5972936B2 - Reflective target device for surveying - Google Patents

Description

  The present invention relates to a reflection target for surveying that measures an observation point distance between a mechanical point and a measurement point using a reflection prism.

  In surveying poles used in civil works or construction sites during surveying, a slide member is slidably attached to a hollow pole, and a prism for a light wave rangefinder is provided as a measuring point on the slide member (for example, Patent Document 1). reference). The height of the prism can be accurately measured without being affected by the external environment.

The facing prism device of Patent Document 2 discloses a structure in which an oblique distance and a vertical angle are measured to calculate a horizontal distance, and a collimation target of the vertical angle is indicated for a total station (machine point). It is provided on a pole that holds and rotates a corner cube as a facing prism. It has a cross-sectional structure in which a part of the pole is cut away and tangent to the horizontal axis or the vertical axis.
In the facing prism device such as the reflecting prism of Patent Document 3, an optical product or the like as a corner cube is made to face the collimation axis of the telescope of the light wave rangefinder and the total station surveying machine. The reflecting prism is configured to retroreflect three mirror surfaces facing each other at an angle of 90 °, and is set so that incident light from the effective incident surface is emitted from substantially the same surface. This retroreflective structure functions effectively even when the incident angle is large, and eliminates the need to set the reflector direction strictly.

JP 2000-234933 A JP 2003-247827 A Japanese Patent Laid-Open No. 2001-165661

However, in Patent Documents 1 and 2, the height can be adjusted by sliding the prism vertically with respect to the pole, but it is difficult to adjust the elevation angle of the prism with respect to the pole.
In Patent Document 3, although the elevation angle of the prism can be adjusted, a mechanical frame that houses the prism and maintains vertical and horizontal accuracy is required, which is a factor that hinders downsizing.
Therefore, even if there is a large difference in elevation between the mechanical point and the measuring point, the development of a reflection target device for surveying that can set the elevation angle range of the reflecting prism so that it can support the measurement of the observation point distance is being sought. It was.

  The present invention has been made in view of the above circumstances, and its object is to provide a reflection target device for surveying that is easy to carry in a lightweight, small and dedicated storage case while ensuring a wide elevation angle range of the reflecting prism. There is to do.

(About claim 1)
In the surveying reflection target device, which is mounted on the surveying pole so that it can be adjusted up and down and left and right, and measures the observation distance between the mechanical point and the measuring point, the main body with a level and the main body with this level And a light reflecting portion that is connected so as to adjust a vertical rotation angle with respect to the pole by a vertical rotation operation with respect to the main body.
The light reflecting portion includes a conical casing and a reflecting prism. The casing is disposed so that the tapered tip is opposed to the pole. The reflecting prism receives light reflected from a mechanical point and reflects it. The reflecting prism is composed of a cone-shaped three-dimensional portion having a trihedron formed so as to form a predetermined adjacent angle to each other, and a disk-shaped incident surface portion. The part is arranged in the casing. An annular ring portion formed to fit the incident surface portion is provided at the opening base end portion of the casing. A nut-like cap that is screwed into the female screw portion is provided on the outer peripheral surface of the annular ring portion.
The outer surface corresponding to the pole of the casing is formed as a flat outer surface. By fitting the incident surface portion into the annular ring portion, the inner side surface portion corresponding to the pole of the casing is formed as a flat inner side surface that contacts the surface of any one of the trihedrons to position the reflecting prism.
A first ring portion and a second ring portion that extend from both sides of the main body and are disposed along the outer surface of the pole. The coupling body has an insertion hole for connecting the first ring portion and the second ring portion and inserting the pole. The third ring portion and the fourth ring portion are extended from both sides of the casing of the light reflecting portion and overlap the outside of the first ring portion and the outside of the second ring portion, respectively. The knob-shaped first indicator portion fixes the first ring portion and the third ring portion overlapping each other. The nut-shaped bearing portion is fitted and fixed to the second ring portion and the fourth ring portion that overlap each other. The second indicator portion is formed by screwing a screw portion formed on the knob to the bearing portion, and presses the tip of the screw portion against the outer surface of the pole. The notch is provided in a portion of the main body that is close to the outer surface of the pole, and ensures visibility with respect to the outer surface of the pole. The press plate made of synthetic resin is disposed between the tip of the screw portion and the outer surface of the pole, and disperses the pressure contact force from the tip of the screw portion.

According to the first aspect, since the flat outer surface is formed in the casing, when the reflecting prism is rotated upward at the time of adjusting the elevation angle, the flat outer surface does not become an interference with the pole in the middle, and there is a margin in the upward rotation amount.
For this reason, the range in which the reflecting prism can be rotated in the vertical direction with respect to the pole is widened, and a large elevation angle adjustable range is obtained. As a result, even when there is a large height difference between the machine point and the measurement point, it is possible to cope with the measurement of the observation point distance without any trouble.
Further, when the reflecting prism is housed in the casing, any one of the trihedral bodies of the conical solid portion comes into surface contact with the flat inner surface. By this surface contact, the reflecting prism can be positioned in the casing.
The reflection target device for surveying can be constituted by a light reflecting portion having a main body having a level, a conical casing, and a reflecting prism. For this reason, the reflection target device for surveying is slimmed down to be a compact structure that is small and lightweight, and is easy to carry in a dedicated storage case.

According to the first aspect , since the incident surface portion is fitted to the annular ring portion, the arrangement of the reflecting prism with respect to the casing is stabilized.

Further, the second indicator portion can press the tip of the screw portion against the outer surface of the pole by pinching. Thereby, the light reflecting portion can be adjusted and fixed to an arbitrary height position with respect to the pole.

At this time, since the position of the pole can be visually observed from the notch portion, the height position adjustment of the light reflecting portion with respect to the pole can be easily and quickly performed. Along with this, surveying work progresses in civil works and construction sites, and the workability of the sites can be improved.

Further, the presser plate disperses the pressure contact force from the tip of the screw portion. For this reason, unlike what is rubbed against the pole locally, the pole is not damaged and the appearance is not deteriorated.

According to a second aspect of the present invention, a portion excluding the opening base end portion of the casing is cut off to form a fitting support structure that exposes the trihedron to the outside. Cutting the casing contributes to material savings as well as material savings.

In addition, since the interference with the pole is reduced only in the cut portion of the casing, the elevation angle adjustment range of the light reflecting portion can be further expanded.

( Claim 3 )
When the part cut off from the base end of the opening of the casing by cutting is a cone part, and the cone part is attached to the trihedron as a magnet body, the cone part is attached to the fitting support structure by the magnetic attraction force. Removably joined.

Further, in claim 3, the elevation adjustment of the light reflecting portion sometimes leave remove the cone portion from trihedral, at the time of the survey ends, by joining the cone portion fitting shaped support structure, protects the trihedral be able to.

(A), (b) is a perspective view which shows the reflection target apparatus for surveying seen from a different direction (Example 1). It is a disassembled perspective view which shows the reflection target apparatus for surveying (Example 1). (A) is an expansion perspective view of a trihedron, (b) is a longitudinal cross-sectional view which follows the KK line | wire at the time of the assembly | attachment of FIG. 2 (Example 1). It is a partial longitudinal cross-sectional view which shows the reflective target apparatus for surveying attached to the pole (Example 1). (A) is a longitudinal cross-sectional view which shows the reflection target apparatus for surveying attached to the pole, (b) is a perspective view of the reflection target apparatus for surveying which shows the aspect which attaches a pressing plate (Example 1). (A) The partial longitudinal cross-sectional view which shows the reflective target apparatus for surveying attached to the pole, (b) is a longitudinal cross-sectional view which shows a light reflection part (Example 2). (A), (b) is a longitudinal cross-sectional view which shows a light reflection part (Example 3).

  The reflective target device for surveying according to the present invention is technically characterized in that it is lightweight and compact and easily carried in a dedicated storage case while ensuring a wide elevation angle range of the reflecting prism.

[Configuration of Example 1]
A first embodiment according to the present invention will be described with reference to FIGS.
A reflection target device 1 for surveying shown in FIGS. 1 (a) and 1 (b) is attached to a survey pole 2 to be described later so that it can be adjusted up and down and left and right, and mechanical points and survey points (both not shown), It is set to measure the observation point distance between.

  As shown in FIG. 2, the container-shaped main body 3 is formed of a metal such as aluminum, and has a level 4. The light reflecting portion 5 is connected so as to be vertically rotatable. The vertical rotation angle (elevation angle) with respect to the pole 2 is adjusted by the vertical rotation operation with respect to the main body 3.

The level 4 has a bubble tube 7 and a bubble tube cover 8 disposed on a steel ball 6.
Three screws 3a, 3b, 3c are fastened to the bottom of the main body 3 via washers 3d, 3e, 3f. By individually tightening the screws 3a, 3b, and 3c, the bubble tube 7 can be swung to adjust the level.
Similar to the main body 3, the light reflecting portion 5 is made of a metal such as aluminum, and includes a conical casing 9 and a reflecting prism 10. The casing 9 is disposed so that the tapered tip faces the pole 2.

  The reflecting prism 10 includes a conical three-dimensional portion 11 having trihedral bodies 11a, 11b, and 11c as corner cubes, and an incident surface portion 12 formed in a disk shape. As shown in FIG. 3A, the trihedrons 11a, 11b, and 11c are formed so as to form a predetermined adjacent angle θ. The incident surface portion 12 functions as a base point that receives incident light from the total station (machine point) and reflects it from the trihedrons 11a, 11b, and 11c. The incident surface portion 12 is set so that the conical three-dimensional portion 11 is placed in a positioning state in the casing 9 when fitted into an annular ring portion 25 described later.

  The outer surface portion corresponding to the pole 2 of the casing 9 is formed as a flat outer surface 9a as shown in FIG. 3B (see also FIG. 4). The inner side surface portion corresponding to the pole 2 of the casing 9 is formed as a flat inner side surface 9b in surface contact with one surface portion of the trihedrons 11a, 11b, and 11c.

  The main body 3 is integrally formed with a first ring portion 14 and a second ring portion 15 that extend from both sides thereof and are arranged along the outer surface of the pole 2. The casing 9 of the light reflecting portion 5 is integrally formed with a third ring portion 16 and a fourth ring portion 17 that extend from both sides and overlap the outside of the first ring portion 14 and the outside of the second ring portion 15, respectively. ing.

At this time, the first ring portion 14 and the second ring portion 15 are connected by a connecting body 15A, and an insertion hole 15B through which the pole 2 is inserted is formed in the connecting body 15A.
Further, the connecting body 15 </ b> A is formed with a lateral hole 15 </ b> C that allows the first ring portion 14 and the third ring portion 16 to communicate with the second ring portion 15 and the fourth ring portion 17. The horizontal hole 15C is arranged in an intersecting state orthogonal to the insertion hole 15B.

  The knob-shaped first indicator portion 18 </ b> A fixes the first ring portion 14 and the third ring portion 16 that overlap each other via the first bush 18. The bearing portion 20 has a nut shape that is fitted and fixed to the second ring portion 15 and the fourth ring portion 17 that overlap each other via the second bush 21.

  The second indicator portion 22 is formed by screwing a screw portion 22b formed on the knob 22a into the bearing portion 20, and connecting the tip of the screw portion 22b to the outer surface of the pole 2 from a lateral hole 15C via a synthetic resin presser plate 23 described later. Pressure contact. As shown in FIG. 4, a notch portion 24 that ensures visibility with respect to the outer surface of the pole 2 is formed in a portion adjacent to the outer surface of the pole 2 of the main body 3 so as to be continuous with the insertion hole 15 </ b> B. .

An annular ring portion 25 into which the incident surface portion 12 is fitted is continuously formed at the opening base end portion 9 </ b> A of the casing 9. The annular ring portion 25 has a female screw portion 25a on the outer peripheral surface. A nut-like cap 27 is screwed into the female screw portion 25 a via a ring-shaped washer 26.
As shown in FIGS. 5A and 5B, a synthetic resin presser plate 23 that disperses the pressure contact force from the tip of the screw portion 22 b between the tip of the screw portion 22 b and the outer surface of the pole 2. Is provided. The presser plate 23 is formed, for example, with polyacetal (POM) to have an L-shaped cross section, and is fastened to the bottom surface of the main body 3 with screws 23a.

[Effect of Example 1]
In the first embodiment, since the flat outer surface 9a is formed on the casing 9, when the reflecting prism 10 is rotated upward during adjustment of the elevation angle, the flat outer surface 9a does not interfere with the pole 2 in the middle, and the amount of upward rotation is increased. There is room.
For this reason, the rotatable range of the reflecting prism 10 with respect to the pole 2 in the up-and-down direction is widened, and a large elevation angle adjustable range φ is obtained. As a result, even when there is a large height difference between the machine point and the measurement point, it is possible to cope with the measurement of the observation point distance without any trouble.

Incidentally, compared with the conventional case where the maximum elevation angle is around 35 °, the first embodiment is improved to the maximum elevation angle of 44.5 °. Thereby, the observation point distance between the mechanical point and the measurement point can be brought close to approximately 1.5 m as a horizontal distance under normal conditions and can be directly opposed.
The normal condition means a case where the installation surface is a flat horizontal surface, the ground height is 10 cm, and the height of the machine point is 1.5 m.
Further, when the reflecting prism 10 is housed in the casing 9, any one of the trihedrons 11 a, 11 b, and 11 c of the conical three-dimensional part 11 is in surface contact with the flat inner side surface 9 b. By this surface contact, the reflecting prism 10 can be positioned in the casing 9.

  The reflection target device 1 for surveying can be composed of a main body 3 having a level 4, a light reflecting portion 5 having a conical casing 9 and a reflecting prism 10. For this reason, the reflection target device 1 for surveying is slimmed down to be a small and light compact structure, which is easy to carry in a dedicated storage case (not shown).

  At the opening base end portion 9 </ b> A of the casing 9, the incident surface portion 12 is fitted to the annular ring portion 25, so that the arrangement of the reflecting prism 10 with respect to the casing 9 is stabilized.

Further, the second index portion 22 can press the tip of the screw portion 22b to the outer surface of the pole 2 by the knob 22a. Thereby, the light reflecting portion 5 can be adjusted and fixed to an arbitrary height position with respect to the pole 2.
At this time, as shown in FIG. 4, the position of the pole 2 can be visually observed from the notch 24, so that the height position adjustment of the light reflecting portion 5 with respect to the pole 2 can be easily and quickly performed.

  In other words, the workability is greatly improved by placing the pole 2 on the measuring point and adjusting the height of the light reflector 5 and the vertical adjustment without changing the operator's standing position and minimizing eye movement. To improve. Along with this, surveying work progresses at civil engineering works and construction sites, and the setup work at the work site can proceed smoothly.

  Further, the presser plate 23 provided on the bottom surface of the main body 3 disperses the pressure contact force from the tip of the screw portion 22b. For this reason, the pole 2 is not damaged and does not deteriorate the appearance in appearance, unlike the case where the pole 2 is pressed and rubbed locally.

  That is, when the second index portion 22 is tightened, the presser plate 23 having a large fixing surface in the axial direction of the pole 2 is pushed out to the outer surface of the pole 2, and the position with respect to the pole 2 is fixed by friction at that time. Thereby, the damage to the external appearance of the pole 2 can be relieved by pressing with the resin surface of the presser plate 23 and the pressure dispersion effect by the expansion of the contact surface.

  Since the presser plate 23 is fastened to the bottom surface of the main body 3 with the screw 23a, the replacement work of the presser plate 23 can be simplified. That is, unlike the conventional product that requires unit replacement or two or more steps of disassembly work, in the first embodiment, the presser plate 23 can be directly replaced on the bottom surface of the main body 3.

[Configuration of Example 2]
FIG. 6 shows a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that a portion of the casing 9 excluding the opening base end portion 9A and the annular ring portion 25 is cut out and omitted.
As shown in FIGS. 6A and 6B, the light reflecting portion 5 has a fitting support structure that exposes the trihedral bodies 11a, 11b, and 11c of the conical solid portion 11 to the outside as the casing 9 is cut. 9B.

  In Example 2, since the trihedrons 11a, 11b, and 11c of the conical three-dimensional portion 11 are exposed by cutting the casing 9, it is possible to contribute to weight saving as well as material saving. Further, since the interference with the pole 2 is reduced only in the cut portion of the casing 9, the elevation angle adjustment range φ of the light reflecting portion 5 can be further expanded.

[Configuration of Example 3]
FIG. 7 shows a third embodiment of the present invention. The difference between the third embodiment and the second embodiment is that a portion of the casing 9 cut off from the opening base end portion 9A and the annular ring portion 25 by cutting is used as the cone portion 9F. The cone portion 9F is configured as a magnet body having magnetism. When the cone portion 9F is attached to the trihedrons 11a, 11b, and 11c, it can be attached to and detached from the fitting support structure 9B by magnetic attraction force. (See FIGS. 7A and 7B).

  In Example 3, the cone part 9F is removed from the trihedrons 11a, 11b, and 11c when the elevation angle of the light reflecting part 5 is adjusted, and the cone part 9F is joined to the fitting support structure 9B at the end of surveying. The trihedrons 11a, 11b, and 11c can be protected.

[Modification]
(A) Although the main body 3 and the light reflecting portion 5 are formed of a metal material such as aluminum, the body 3 and the light reflecting portion 5 are not limited to the metal material, and may be formed of a plastic material or a reinforced plastic material.
(B) For the material of the presser plate 23, polyacetal is used as polyoxymethylene (POM). However, the material is not limited to polyacetal (POM), and other synthetic resin materials may be applied as engineering plastics.

  In the reflection target device for surveying of the present invention, the range in which the reflection prism can be rotated in the vertical direction with respect to the pole is widened, and a large elevation angle adjustable range is obtained. As a result, even when there is a large height difference between the machine point and the measurement point, it is possible to cope with the measurement of the observation point distance. Focusing on the large adjustable range of the angle of reflection of the light reflecting portion, the demand increases, and it can be applied to the chemical / mechanical industry through the distribution of related parts.

DESCRIPTION OF SYMBOLS 1 Reflection target apparatus for surveying 2 Pole 3 Main body 5 Light reflection part 9 Casing 9A Opening base end part 9B Fitting type support structure 9a Flat outer surface 9b Flat inner side surface 9F Cone part 10 Reflection prism 11 Cone-shaped solid part 11a, 11b 11c Trihedral body 12 Incident surface portion 14 First ring portion 15 Second ring portion 15A Connecting body 15B Insertion hole 16 Third ring portion 17 Fourth ring portion 18A First indicator portion 22 Second indicator portion 22a Knob 22b Screw portion 23 Presser Plate 24 Notch 25 Annular ring φ Elevation angle adjustment range

Claims (3)

A reflection target device for surveying, which is attached to a surveying pole so that it can be adjusted up and down and left and right, and measures an observation distance between a mechanical point and a survey point
A main body having a level, and a light reflecting portion that is connected to the main body so as to be vertically rotatable, and that adjusts the vertical rotation angle with respect to the pole by the vertical rotation operation with respect to the main body;
The light reflecting portion is
A conical casing disposed so that the tapered tip is opposed to the pole;
Consists of a cone-shaped solid portion having a trihedron formed so as to form a predetermined adjacent angle to each other, and a disc-shaped incident surface portion. The cone-shaped solid portion is disposed in the casing and receives light from the mechanical point. A reflecting prism that reflects
An annular ring portion formed for fitting the incident surface portion to the opening proximal end portion of the casing;
A nut-like cap that is screwed into the female thread portion formed on the outer peripheral surface of the annular ring portion;
The outer surface portion corresponding to the pole of the casing is formed as a flat outer surface, and when the reflecting prism is housed in the casing, the incident surface portion is fitted into the annular ring portion, thereby the pole of the casing. An inner side surface corresponding to the surface of any one of the trihedrons is formed as a flat inner side surface for positioning the reflecting prism .
A first ring portion and a second ring portion that extend from both sides of the main body and are disposed along the outer surface of the pole;
A connecting body having an insertion hole for connecting the first ring part and the second ring part and inserting the pole;
A third ring portion and a fourth ring portion that extend from both sides of the casing of the light reflecting portion and overlap the outside of the first ring portion and the outside of the second ring portion, respectively.
A knob-shaped first indicator portion for fixing the first ring portion and the third ring portion overlapping each other;
A nut-shaped bearing portion fitted and fixed to the second ring portion and the fourth ring portion, which overlap each other;
A second indicator portion for screwing a screw portion formed in a knob to the bearing portion, and press-contacting a tip of the screw portion to an outer surface of the pole;
Provided in a portion of the main body adjacent to the outer surface of the pole, and a notch for ensuring visibility with respect to the outer surface of the pole;
The tip of the screw portion and disposed between the outer surface of the pole, surveying reflective targets characterized that you and a synthetic resin retainer plate for distributing the pressing force from the tip of the screw portion apparatus. 2. The reflection target device for surveying according to claim 1 , wherein a portion of the casing excluding the base end portion of the casing is cut off to form a fitting support structure that exposes the trihedron to the outside . When the casing is attached to the trihedron using a portion of the casing that is cut off from the base end of the opening as a cone, and the cone is used as a magnet, the cone is fitted by the magnetic attraction force. The reflective target device for surveying according to claim 2 , wherein the reflective target device is detachably joined to the shape support structure .

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