JP2020098111A - Prism device instrument - Google Patents

Abstract

To provide a prism device instrument which can easily change a facing position of a prism for survey right and left and up and down to easily face a laser radiation of a survey apparatus while being able to be easily adjusted to a reflection constant specific to a reflecting prism.SOLUTION: A prism survey instrument which performs position survey by using a prism instrument with a reflecting prism is composed of: a prism device which includes a slide portion composed of a slit and a circular hole portion; a prism holder which includes a protrusion portion removably inserted into the slide portion; and a prism supporting post which provides for connection and support via a bracket extending upward and downward from the prism device. The protrusion portion of the prism holder, when entering the circular hole portion, is positionally secured such as to be pressed by a securing screw through a screw hole provided on a side face of the prism device. Also, the prism supporting post and the prism device are connected in a structure having taper engagement of a conical, recess/protrusion form, the structure being rotatable.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prism instrument device that can easily and accurately adjust the position of a surveying prism.

Conventional surveying technology uses a laser beam to measure the distance and angle between the surveying point and the observation point. At that time, a reflection prism with a corner cube reflector structure is used as a target at the surveying point. The reflecting prism is configured to reflect the incident light in a direction substantially the same as the incident direction.

In the position survey using this reflection prism, a tripod is set up at the surveying point, a pole is installed vertically on the tripod, and a plurality of prismatic posts that are connected and assembled to this pole are connected vertically via a bracket. The supporting leg structure of the prism device is configured such that the lower end is installed at the surveying point. Such a prism pillar is constructed by connecting a plurality of short pillars to a pillar having a predetermined length, and a prism device is integrally attached and fixed to each of the predetermined two pillars.

The prism device integrally attached to and fixed to the prism support uses the above-described reflection prism in the structure that constitutes the prism device. This reflecting prism needs to be moved and adjusted in the front-back direction of the fixed prism column according to the prism constant of the prism used. Regarding this adjusting mechanism, there is a constituent device such as the following Patent Document 1.

In addition, since it is necessary to accurately point the surveying point to the standing position of the prism columns, the connection structure of the prism columns is strong and screwed so that the positional relationship between the connected column columns does not shift in the vertical direction. It had been.

Further, in the measurement using laser light, the optical path length changes when the medium that transmits light changes. Therefore, it is necessary to adjust the reflection prism so that the light incident on the reflection prism faces the laser irradiation as much as possible. ..

Further, in the automatic collimation function provided in the surveying instrument, an error occurs in the survey result unless the prism apex portion of the reflecting prism faces the surveying instrument. Therefore, when changing the reflection prism or the surveying instrument, adjust the front-back and left-right orientation of the reflection prism so that it faces the surveying instrument, and position the surveying prism forward and backward with respect to the surveying instrument according to the reflection constant of the reflection prism. Need to be adjusted.

In Patent Document 1 below, the upper and lower prisms that reflect the laser light emitted from the optical distance measuring device in the incident direction are housed in a prism housing, and both prisms are mounted on the right side surface of the prism housing at the survey point pole. An attachment mechanism for attaching to is rotatably provided. According to this configuration, when the mounting mechanism is rotated, the distance between the pole and both prisms is changed, and the measurement error when the surveying instrument is changed is described.

In Patent Document 2 below, in the structure for connecting surveying poles, one end portion of a cylindrical columnar strut is formed as an externally threaded engagement protrusion, and the other end is formed as an internal threaded engagement recessed portion, whereby the individual columnar strut is screwed together. A surveying pole is formed in a predetermined length in combination with each other, and a surveying pole in which the positional relationship in the vertical direction is not deviated is described.

JP, 10-26662, A Japanese Utility Model Publication No. 1-104512

However, in Patent Document 1 described above, since the prism housing whose position can be changed is attached to the predetermined support pole, when the surveying instrument is changed, the position of the reflecting prism is changed to the positional relationship corresponding to the surveying instrument. Although it is possible to do so, it is difficult to deal with the surveying error due to the automatic collimation because only the adjustment in the front-back direction is possible.

In addition, in the survey pole connection structure described in Patent Document 2, since the short columns are fixedly screwed to each other to fix the positional relationship of the columns, they are connected to the middle part of the survey pole. It was difficult to adjust the position of the surveying prism in the horizontal direction.

Therefore, in the present invention, in order to easily face the laser irradiation of the surveying instrument, the facing position of the surveying prism can be easily changed up, down, left and right, and a prism instrument device that can easily cope with the reflection constant peculiar to the reflecting prism is provided. The purpose is to provide.

In a prism surveying device using a reflecting prism, a prism device having a slide part composed of a slit and a circular hole part, a prism holder having a projection part that can be inserted into and removed from the slide part, and the prism device. A prism column that is connected and supported through brackets that project from above and below, and the projecting portion of the prism holder that enters the circular hole through the screw hole provided on the side surface of the prism fixture is fixed with a screw. The prism instrument device is characterized in that it is pressed by and fixed in position.

Further, in the prism instrument device for surveying of the present invention, a plurality of the prism columns are connected to form a column having a predetermined length, and the prism device is integrally attached and fixed to each of the two predetermined columns. In addition, the connection structure of the columns connected to each other is a conical concavo-convex tapered fitting structure, and the operation of the two prism devices facing the laser irradiation is configured by rotating the columns of the tapered fitting structure. It was a featured prism instrument device.

According to the prism instrument device for surveying of the present invention, in the prism surveying device using the reflection prism, the prism instrument having the slide portion configured by the slit and the circular hole portion, and the slide portion which can be freely inserted and removed. The prism holder is provided with a projecting portion, and the prism support is connected and supported through brackets protruding above and below the prism device, and the circular hole is provided through a screw hole provided on the side surface of the prism device. Since the protruding part of the prism holder that entered the part was pressed with a fixing screw to fix the position, the reflecting prism centered on the protruding part of the prism holder so as to face the laser irradiation of the surveying device. Can be easily adjusted in the vertical direction.
In addition, since the position of the reflection prism fixed to the prism holder can be easily fixed by inserting the protruding part of the prism holder into the slide part, the interval is set according to the prism constant of the reflecting prism to which this protruding part is attached. By protruding from the prism holder, it is possible to easily adjust the installed prism constant. That is, it is possible to easily deal with different prism constants of the reflecting prism by inserting either of the protrusions on the upper and lower side surfaces of the prism holder into the slide portion of the prism device.

Further, in the surveying prism instrument device of the present invention, a plurality of the prism columns are connected to form a column having a predetermined length, and a prism device is integrally attached and fixed to each of two predetermined columns of the prism columns. In addition, the connection structure of the columns connected to each other is a conical concavo-convex tapered fitting structure, and the operation of the two prism devices facing the laser irradiation is configured by rotating the columns of the tapered fitting structure. It is possible to easily connect the formed support columns to each other simply by inserting the conical convex portions of the prism device into the conical recessed portions. Therefore, the prism device can be easily configured to have a predetermined length when configuring the prism support. Further, since the surfaces of the conical convex portion and the conical concave portion of the prism device are rough surfaces, it is possible to easily rotate the prism device in the horizontal direction and easily change the facing position of the reflecting prism with respect to the horizontal plane. With the above configuration, it is possible to easily adjust the position of the surveying device facing the laser irradiation light on the vertical plane and the horizontal plane of the reflecting prism.

It is a perspective view showing the whole prism instrument device concerning the present invention. It is a perspective view which shows the prism support of a conical concavo-convex shape in the prism instrument apparatus which concerns on this invention. It is a figure which shows the connection part of the prism support|pillar in the prism instrument apparatus which concerns on this invention, (a) is a front view, (b) is a side view which provided the air groove in the fitting recessed part, (c) is. It is a figure which provided the air groove in the fitting convex part, and (d) is a figure which provided the air groove in both the fitting concave part and the fitting convex part. It is sectional drawing of the prism support|pillar in the prism instrument apparatus which concerns on this invention, (a) is an AA sectional view of the conical concave part of FIG.3(d), (b) is a conical convex part of FIG.3(d). FIG. It is a perspective view showing a prism instrument in a prism instrument device concerning the present invention. It is a front view which shows the prism instrument in the prism instrument apparatus which concerns on this invention. It is CC sectional drawing shown in FIG. 6 of the prism instrument in the prism instrument apparatus which concerns on this invention. It is a side view which shows the prism instrument in the prism instrument apparatus which concerns on this invention. It is a perspective view showing a prism holder in a prism instrument device concerning the present invention. It is a front view showing a prism holder of a prism instrument device concerning the present invention. It is a side view which shows the prism holder of the prism instrument apparatus which concerns on this invention. It is a schematic diagram which attaches and removes a prism holder to the prism instrument in the prism instrument apparatus which concerns on this invention, (a) is a figure which shows the installation procedure in a front protrusion, (b) is a figure in a rear protrusion. It is a figure which shows the installation procedure. It is a front view which shows the other Example of the prism instrument in the prism instrument apparatus which concerns on this invention.

The present invention relates to a prism surveying device for performing position measurement by a prism device using a reflecting prism, and a prism device having a slide portion composed of a slit and a circular hole portion, and a projecting member which can be inserted into and removed from the slide portion. A prism holder provided with a prism part, and a prism post that is connected and supported through a bracket extending vertically from the prism device, and a slide part with a fixing screw through a screw hole facing the side surface of the prism device. Fix the protruding portion of the prism holder that has entered into the pressing position, and further connect a plurality of the prism columns to form a column having a predetermined length, and a prism device is integrated into each of the two predetermined columns. The connection structure of the pillars that are attached and fixed to the above is a conical concavo-convex taper fitting structure, and the operation of the two prism devices that face the laser irradiation is performed by rotating the pillars of the taper fitting structure. The main point is the composition.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 12.

FIG. 1 is a perspective view showing a prism surveying device 100 according to the present invention.
The prism surveying device 100 includes a bipod 10 for stably placing and fixing it on a surveying point, a support strut 13 vertically installed from a vertex of the bipod 10 via a bracket 12, a lower end portion of the support strut 13 and a substantially central portion thereof. A support fixing portion 14 protruding from the supporting portion, a prism device 30 connected and fixed to a midway portion of the prism support 20 vertically extending from the support fixing portion 14, and a prism holder 40 connected and fixed to a hollow portion of the prism device 30. It consists of.

As shown in FIG. 1, the bipod 10 is composed of two legs 11 and 11. A bracket 12 is provided so as to project from the upper ends of the legs 11 and 11 to the sides of the legs. There is. The brackets 12 are connected to each other at connection points, and support columns 13 are vertically provided at the connection points.

The support column 13 has a rod shape with a substantially circular cross section, and a support fixing portion 14 is provided in the radial direction from a lower end portion and a substantially central portion in the longitudinal direction.
The support fixing portion 14 is composed of a support bracket 15 having a substantially rectangular shape in side view, and a grip portion 16 for holding and fixing.

The support bracket 15 is substantially U-shaped in a plan view, and connects and fixes the base end portion of the grip portion 16 from the side via screws or the like. The grip portion 16 is composed of two sandwiching portions 18 which are curved in an approximately arc shape and which can be opened and closed in the left-right direction in a plan view with the pivot portion 17 as a base point. The prism columns 20 are gripped and fixed by the contact portions of the sandwiched portions 18, 18.
It should be noted that the pivot portions 17 are spring-biased in a direction in which the nipping portions 18, 18 contact at their tips.

As shown in FIGS. 2 and 3, the prism column 20 is configured by linearly connecting a plurality of at least two column units 21. .., 21 are connected by a taper fitting structure 22 to form one prism support column 20.

The pillar unit 21 has a tapered mountain-shaped tapered hole 23 that tapers toward the upper end inwardly of the center of the lower end, and a taper protrusion that can be inserted into and removed from the tapered hole 23 substantially at the center of the upper end. 24 are extended. By configuring the support columns 21 in this way, a tapered fitting structure 22 of the support columns 21 is realized.

In addition, the surfaces of the tapered hole 23 and the tapered protrusion 24 of the support column 21 are rough surfaces. By configuring the surfaces of the tapered hole 23 and the tapered projection 24 as a rough surface in this way, the rough surface functions as a slip when the support columns 21, 21,..., 21 are connected, It has a structure that does not easily cause horizontal rotation.
Further, an air hole 25 is formed in the tapered protrusion 24 of the support column 21 as a groove having a concave cross section from the upper end of the tapered protrusion 24 to the flange portion 26 provided at the base end of the tapered protrusion 24. By forming the air holes 25 in the tapered protrusions 24 in this manner, air pressure generated inside the tapered holes 23 is released when the support columns 21 are connected, and the connection of the support columns 21 is facilitated.
The configuration in which the air holes 25 are provided in the tapered protrusions 24 may be configured so as to reduce the possibility that the internal pressure of the connecting portions 21 rises when connecting the support columns 21 to each other. In the description of the present embodiment, the taper is used. Although it is configured to be provided on the protrusion 24, the configuration is not particularly limited to this, and it may be configured to extend from the upper end to the lower end of the tapered hole 23, or both the tapered hole 23 and the tapered protrusion 24 may be configured as described above. Such a concave groove may be formed.

In the middle of connecting the single pillars 21 of the prism pillar 20 configured as described above, a prism device 30 that can be fitted to the tapered hole 23 and the tapered protrusion 24 of the single pillar 21 is connected.

As shown in FIGS. 5 and 6, the prism device 30 has a substantially octagonal shape when viewed from the front and has a hollow substantially central portion. In addition, the prism device 30 has brackets 31 and 31 having a substantially cylindrical shape for connecting to the column unit 21 of the prism column 20 protruding from the upper and lower ends thereof, and a fixing screw 32 is provided at a substantially central portion of the left and right side faces of the prism device 30. A screw hole 33 for screwing is formed. The screw hole 33 penetrates to a substantially central portion of a circular hole portion 34 described later.

Further, a circular hole portion 34, which is partially cut out toward the rear of the prism device 30, is formed at approximately the center in the up-down direction of the left and right inner side surfaces of the prism device 30, and an elongated member provided from this cutout portion toward the rear of the prism device 30. A slide portion 36 including a hand-shaped slit 35 is provided.

As shown in FIGS. 6 and 7, the slide portion 36 is provided so as to project inward of the prism device 30, and the hollow portion between the slide portions 36, 36 moves the prism holder 40 installed therebetween. It is configured to have a width of any degree, that is, substantially the same as the width of the prism holder 40.

As shown in FIGS. 9 to 11, the prism holder 40 has a substantially rectangular shape in a front view, and is cut out in a convex step shape from the upper end to the substantial center of the prism holder 40. Further, the prism holder 40 is provided with a screw hole 41 for fixing the reflection prism P substantially at the center of the tip of the convex cutout. Further, front and rear projections 42, 42 and rear projections 43, 43 are provided on both side surfaces of the prism holder 40.

The front protrusions 42, 42 and the rear protrusions 43, 43 are formed in a substantially elliptical shape having a major axis in the width direction of the prism holder 40. The widths of the front protrusions 42, 42 and the rear protrusions 43, 43 in the short axis direction are slightly smaller than the vertical width of the slit 35 of the slide portion 36, and the width in the long axis direction is a circle of the slide portion 36. The diameter is slightly smaller than the diameter of the hole 34.

The prism holder 40 configured as described above is configured such that one of the pair of left and right front protrusions 42, 42 or the rear protrusion 43, 43 is inserted into the slit 35 of the slide portion 36 of the prism device 30. Supported by 30.
Further, the prism holder 40 reaches further to the front of the slit 35 to reach the circular hole portion 34 of the slide portion 36, and one of the protrusions 42 and 43 inserted into the slit 35 is used as a rotation axis in either the front or rear direction. The reflecting prism P fixed to the prism holder 40 can be turned in a predetermined direction by rotating the mirror.
Further, after the reflecting prism P is oriented in a predetermined direction, the fixing screw 32 provided on the left and right side surfaces of the prism device 30 is tightened so that the tip end of the fixing screw 32 moves the side surface of the front protrusion 42 or the rear protrusion 43. The rotation of the prism holder 40 can be regulated by pressing inward of the prism device 30 from the left and right.

Further, when the prism holder 40 is removed from the prism device 30, depending on the weight of the prism holder 40 and the reflection prism P attached to the screw hole 41, the fixing screw 32 is simply loosened, and the front projection 42 on the side surface of the prism holder 40 or By rotating around the rear protrusion 43, the width of the front protrusion 42 or the rear protrusion 43 can be converted to a direction passing through the slit 35, and the prism holder 40 can be easily removed from the prism device 30.

A modified example of the prism instrument 30 of the prism surveying instrument 100 of the present invention will be described. The configuration of the prism surveying device 200 is the same as that of the prism instrument except for the prism instrument, and the description thereof will be omitted.

As shown in FIG. 13, the prism device 30 has a configuration in which the screw holes 33 provided on the left and right side surfaces are removed and the prism holder 40 can be fixed without using the fixing screw 32.
As shown in FIGS. 10 and 13, the distance between the left and right inner side surfaces of the prism device 30 is N1, and the distance between any protrusions of the prism holder 40 (for example, both end portions of the front protrusions 42, 42) is set to be N1. By setting the dimension N1 to be slightly larger than N2 as N2, the prism holder 40 inserted into the slit 35 is fixed without using screws or the like.
That is, by inserting the prism holder 40 into the slit 35 of the prism device 30, the prism device 30 is expanded outward. Here, the prism device 30 is made of a flexible material, and the elastic force of the prism device 30 that cancels the expansion and expansion displacement amount due to the insertion of the prism holder 40 and returns to the original form. It is raised inward. The prism holder 40 is fixed to the slit 35 of the prism device 30 by this elastic force.
By thus defining the inner dimension N1 of the prism device 30 and the width N2 of the prism holder 40, the prism holder 40 rotates after reaching the circular hole 34 after passing through the slit 35 of the prism device 30. The reflection prism P fixed to the holder 40 can be fixed in a predetermined direction.

Next, a method of installing the prism surveying instrument 100 at a surveying point will be described with reference to FIGS. 12(a) and 12(b).

First, the leg body 11 is installed so that the surveying point is located in the two leg bodies 11 of the bipod 10.
Next, the center of the bracket 12 provided on the upper portions of the legs 11 and 11 is arranged near the surveying point.

Next, the taper protrusions 24 of the short pillars 21 are inserted into the tapered holes 23 to connect them, and the prism pillars 20 are appropriately connected to each other so as to have a predetermined length. At this time, the bracket 31 of the prism device 30 is fitted between the unit columns 21 of the prism unit 20 through the tapered hole 23 of the column unit 21 and the tapered protrusion 24 while the prism column 20 is being constructed.

Next, the front protrusion 42 of the prism holder 40 is inserted into the circular hole 34 through the slit 35 of the slide portion 36 provided in the prism device 30.
When the prism holder 40 passes through the slit 35, the reflection prism P screwed into the screw hole 41 of the prism holder 40 faces upward or downward.

Next, the prism holder 40 that has entered the circular hole 34 can be rotated about the front projection 42 (or the rear projection 43) as a rotation axis so that the facing direction of the reflection prism P is on the surveying instrument side.
Thereafter, the fixing screw 32 arranged on the side surface of the prism device 30 can be tightened to fix the reflecting prism P in a predetermined direction.

When disassembling the prism surveying device for surveying after the surveying, it can be easily disassembled by following the procedure reverse to the above procedure.
That is, the fixing screw 32 arranged on the side surface of the prism device 30 is loosened to release the fixation of the prism holder 40 so that the prism holder 40 faces downward according to the gravity applied to the reflection prism P.
The prism holder 40 faces downward according to the weight of the fixed reflection prism P, so that the flat surfaces 42a of the front projections 42, 42 (or the rear projections 43, 43) arranged on the left and right side surfaces of the prism holder 40 form the slit 35. The form can be changed so that it can pass through.
After removing the prism holder 40, the tapered fitting structure 22 of the prism support 20 is released to separate the support unit 21 and the prism device 30, and the prism support device 100 is removed by removing from the sandwiching portion 18 of the grip portion 16. Can be disassembled.

It should be noted that the present invention is not limited to the above-described embodiments, but the configurations disclosed in the above-described embodiments are disclosed by replacing each configuration disclosed in the above-described embodiments with each other or changing combinations. A configuration in which the respective configurations are mutually replaced or the combination is changed is also included. Further, the technical scope of the present invention is not limited to the above-described embodiments, but extends to the matters described in the claims and equivalents thereof.

P Reflective prism 100, 200 Prism surveying instrument 10 Tripod 11 Leg 12 Bracket 13 Supporting post 14 Support fixing part 15 Supporting bracket 16 Grasping part 17 Pivoting part 18 Clamping part 20 Prism post 21 Single post 22 Tapered fitting structure 23 Taper hole 24 Tapered protrusion 25 Air hole 26 Flange 30 Prismatic device 31 Bracket 32 Fixing screw 33 Hole 34 Circular hole 35 Slit 36 Slide part 40 Prism holder 41 Screw hole 42 Front protrusion 42a Flat surface 43 Rear protrusion

Claims (2)

In a prism surveying device that measures the position by a prism device that uses a reflecting prism,
A prism device having a slide portion composed of a slit and a circular hole portion,
A prism holder provided with a protruding portion that can be inserted into and removed from the slide portion,
A prism column that is connected and supported via a bracket extending vertically from the prism device,
Consists of
A prism surveying device characterized in that a protruding portion of a prism holder that has entered a circular hole portion through a screw hole provided on a side surface of the prism device is fixed in a pressing position by a fixing screw. A plurality of prism columns are connected to form a column having a predetermined length,
A prism fixture is attached and fixed to each of the two prescribed prism columns,
Moreover,
The connection structure of the pillars that are connected to each other is a conical uneven taper fitting structure,
The prism surveying device according to claim 1, wherein the operation of the two reflecting prisms that are directly opposed to the laser irradiation is configured by rotating a pillar having a tapered fitting structure.

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