JP2020003324A - Prism holder and measurement tool using the same - Google Patents

Abstract

To reduce the load on a person who is doing a measuring work.SOLUTION: A prism holder 20 includes: a holding unit 21 for holding a pole (prism pole 15) equipped with a prism target 11 and a level 12; and a leg part 22a below the holding unit, the leg part contacting the floor surface. The holding unit has a bearing part (rod end bearing 33) holding the pole rotatably. The leg part has a rotatable moving part (ball caster 41) in a site in contact with the floor surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a prism holder and a surveying tool using the prism holder.

  For example, in the surveying work, a pole on which a prism target to be surveyed is attached is arranged at an arbitrary point, a distance and an angle from the device to the prism target are specified by a three-dimensional measuring device, and the three-dimensional prism target is measured. This was done by calculating the coordinates. As the three-dimensional measuring device, for example, a known total station or the like is used.

In such a surveying work, the arrangement of the poles has been performed by one of the following first method and second method.
(First method) A method in which a worker performing surveying work holds a pole with his / her hand.
(Second method) A method in which a pole is held by a mechanical instrument (for example, see Patent Document 1).

In the first method (a method in which an operator grips a pole with his / her hand), the operator performs the following operation.
(Work 1a) A work in which a stone end provided at the lower end of the pole is brought into contact with an arbitrary point to be measured, and the pole is oriented vertically. Alternatively, the order is reversed, and the pole is oriented in the vertical direction, and the stone bump provided at the lower end of the pole is hit against an arbitrary surveying point.
(Work 1b) Work to keep the pole that is vertically oriented by hand until the survey is completed.

  When a point to be surveyed remains after the operation 1b, the worker moves the pole and repeats the operations 1a and 1b. At this time, the worker repeats the above-mentioned work 1a and work 1b regardless of the uneven place such as the uneven ground or the relatively flat place such as the uneven ground.

On the other hand, in the above-mentioned second method (method of holding a pole by a mechanical instrument), an operator performs the following operation.
(Work 2a) Work to attach the pole to the instrument.
(Operation 2b) An operation of arranging the device at an arbitrary point, hitting a ram provided at the lower end of the pole with an arbitrary point to be measured, and turning the pole in a vertical direction. Or, the operation of reversing the order, turning the pole in the vertical direction, arranging the instrument at an arbitrary point, and abutting the stone set provided at the lower end of the pole to an arbitrary point to be measured.

  When the point to be surveyed remains after the operation 2b, the operator moves the instrument and repeats the operation 2b. At this time, the worker repeatedly performs the above-described operation 2b regardless of the uneven place such as the uneven ground or the relatively flat place such as the uneven ground.

  In the first method (the method in which the operator holds the pole by hand) and the second method (the method in which the mechanical instrument holds the pole), the point to be surveyed is determined in advance. There is a case that is not fixed. When a point to be surveyed is predetermined, the operator writes a mark such as an “X” mark at the point in advance, and hits a pole sword against the mark to make a pole stone. The position of the thrust coincides with the position of the mark. On the other hand, if the point to be surveyed is not determined in advance, the worker marks a mark such as “X” at the surveyed point after surveying an arbitrary point.

JP 2005-114701 A

  However, there is a problem that both the surveying operation by the first method and the surveying operation by the second method impose a great burden on an operator in the surveying operation, as described below.

  For example, in a surveying operation using the first method (a method in which an operator performing a surveying operation holds a pole with his / her hand), the operator repeats the operations 1a and 1b while holding the pole with his hand. Do. At this time, every time the worker moves the pole, the worker must make the pole of the pole coincide with a mark such as an “X” mark and work to turn the pole in the vertical direction, or change the pole direction to the vertical direction. And marking a mark such as an “X” mark at the surveyed point after the survey. Therefore, the surveying work according to the above-described first method requires a large amount of work and places a great burden on the operator.

  In addition, when the worker holds the pole with his / her hand and performs both the work of matching the stone end of the pole with a mark such as an “X” mark and the work of turning the pole in the vertical direction, both work is performed. It was difficult to carry out accurately in parallel. Further, when the worker holds the pole with his / her hand and writes a mark such as an “X” mark at the surveyed point after the survey, the worker may perform the work of marking the mark because one hand is blocked. It was difficult. Due to these factors, the surveying work according to the above-described first method puts a heavy burden on the worker.

  Also, for example, in the surveying operation by the above-described second method (method of holding a pole on a mechanical instrument), the direction of the pole changes every time the instrument is moved, so that the operator needs to move the instrument every time the instrument is moved. Work to orient the pole vertically. Therefore, the surveying work by the above-described second method requires a large amount of work and places a great burden on the operator.

  With respect to the above problems, the inventor of the present invention may move the prism target while maintaining the orientation of the prism target in a horizontal direction when the place to be measured is a relatively flat place such as a level ground. We thought that if possible, the burden on workers could be reduced.

  The present invention has been made to solve the above-described problems, and has as its main objects to provide a prism holder that reduces the burden on an operator in a surveying operation, and a surveying tool using the prism holder. And

In order to achieve the above object, the present invention is a prism holder, and a holding unit for holding a pole to which a prism target and a level are attached, and disposed below the holding unit, and a floor surface. And a leg portion that contacts the floor, wherein the holding portion has a bearing portion that rotatably holds the pawl, and the leg portion has a rotatable moving portion at a portion that contacts the floor surface. .
Other means will be described later.

  ADVANTAGE OF THE INVENTION According to this invention, the burden of the operator in surveying work can be reduced.

It is a schematic diagram showing the composition of the survey tool concerning an embodiment, and the prism holder used for the survey tool. It is a perspective view showing composition of a holding part of a prism holder used for a surveying tool concerning an embodiment. FIG. 2 is a front view illustrating a configuration of a prism target used in the embodiment. FIG. 2 is a perspective view illustrating a configuration of a level used in the embodiment. FIG. 2 is a perspective view illustrating a configuration of a balancer used in the embodiment. 6 is a flowchart illustrating an example of a surveying operation using the surveying tool according to the embodiment. It is an explanatory view of a perpendicular setting of a pole in a surveying tool concerning an embodiment. It is an explanatory view of an example of use of a surveying tool concerning an embodiment.

  Hereinafter, an embodiment of the present invention (hereinafter, referred to as “the present embodiment”) will be described in detail with reference to the drawings. It should be noted that the drawings are only schematically shown to the extent that the present invention can be sufficiently understood. Therefore, the present invention is not limited only to the illustrated example. In addition, in each drawing, common constituent elements and similar constituent elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

[Embodiment]
<Structure of surveying tool and prism holder used for the surveying tool>
Hereinafter, the configuration of the surveying tool 10 according to the present embodiment and the prism holder 20 used in the surveying tool 10 will be described with reference to FIGS. FIG. 1 is a schematic diagram illustrating a configuration of a surveying tool 10 according to the present embodiment and a prism holder 20 used in the surveying tool 10. FIG. 2 is a perspective view showing a configuration of the holding unit 21 of the prism holder 20. FIG. 3 is a front view showing the configuration of the prism target 11 used in the present embodiment. FIG. 4 is a perspective view showing the configuration of the level 12 used in the present embodiment. FIG. 5 is a perspective view illustrating the configuration of the balancer 13 used in the present embodiment.

  The surveying tool 10 is a tool used for surveying work. The surveying tool 10 includes a prism target 11 described later, which is a surveying target of the three-dimensional measuring device. Here, a description will be given assuming that the three-dimensional measuring apparatus is configured by a total station TS described later.

  As shown in FIG. 1, in the present embodiment, an operator performs a surveying operation using the total station TS, the mobile device MB, and the surveying tool 10.

  The total station TS is a distance measuring angle measuring device for measuring a distance and an angle from the total station TS to an object to be measured (a prism target 11 described later). The total station TS measures the distance and angle from itself to the later-described prism target 11 by irradiating the surroundings with a laser beam and receiving the reflected light reflected by the later-described prism target 11. The total station TS has a wireless communication function such as Bluetooth (registered trademark).

  The mobile device MB is a portable device carried by a worker. The mobile device MB is composed of, for example, a smartphone or a tablet. Here, a description will be given assuming that the mobile device MB is configured by a smartphone having a wireless communication function such as Bluetooth. The total station TS wirelessly communicates with the mobile device MB, thereby instructing a worker on a place to be surveyed (a surveying point) and the like.

  The surveying tool 10 includes a prism target 11, a level 12, a balancer 13, and a prism holder 20. The surveying tool 10 may include a height adjustment ring 14 in addition to the above components. The height adjustment ring 14 is a ring-shaped member that can be attached to the prism pole 15 and can adjust the attachment height.

  The prism target 11 is a member for reflecting the laser light emitted from the total station TS (three-dimensional measuring device). As the prism target 11, for example, a mini 360 ° pin-pole prism “GRZ101” manufactured by Leica can be used.

  The level 12 is for confirming whether or not the orientation of the prism target 11 is horizontal (that is, whether or not the orientation of a prism pole 15 described later to which the prism target 11 is attached is vertical). It is a device.

  The balancer 13 is a member for setting the direction of the prism target 11 to a horizontal direction. The balancer 13 is attached to the prism pole 15 so as to be rotatable around the axis of the prism pole 15. The balancer 13 is arranged on the level 12. The surveying tool 10 sets the orientation of the prism target 11 in the horizontal direction by rotating the balancer 13 around the axis of the prism pole 15 (that is, the orientation of the prism pole 15 described later to which the prism target 11 is attached). Can be set vertically).

  The prism target 11, level 12, balancer 13, and height adjustment ring 14 are attached to a prism pole 15. At the lower end of the prism pole 15, a conical stone bump 15a is arranged. The stone bump 15a is a portion that is bumped against the floor surface.

  The prism holder 20 is an instrument that holds the prism pole 15 to which the prism target 11 and the like are attached. The prism holder 20 can rotatably hold the prism pole 15 and freely move the prism target 11 while maintaining the orientation of the prism target 11 in the horizontal direction.

The prism holder 20 includes a holder 21 and a tripod 22.
The holding unit 21 is a mechanism that holds the prism pole 15 rotatably.
The tripod section 22 is a mechanism that supports the holding section 21.

The holding portion 21 has a mounting base 31, an L-shaped bracket 32, and a rod end bearing 33.
The mounting table 31 is a table to which the L-shaped bracket 32 is mounted.
The L-shaped bracket 32 is a member to which the rod end bearing 33 is attached.
The rod end bearing 33 is a bearing part that holds the prism pole 15 rotatably.
Details of the mounting base 31, the L-shaped bracket 32, and the rod end bearing 33 will be described later.

  The tripod portion 22 is a mechanism that supports the holding portion 21 with three legs 22a (however, four or more legs may be used). A rotatable ball caster 41 is disposed at the lower end of each leg 22a. Thereby, the prism holder 20 can be freely moved. An extendable portion 42 that is configured to be extendable and contractible is disposed in the middle of each leg 22a. Thereby, the prism holder 20 can freely expand and contract each leg 22a.

  As shown in FIG. 2, the L-shaped bracket 32 has a short portion 32a and a long portion 32b. The short part 32a and the long part 32b are arranged at right angles. As a result, the L-shaped bracket 32 has an L-shape at the short portion 32a and the long portion 32b.

  A long hole 32ho extending in the extending direction of the short portion 32a is formed at the center of the short portion 32a. Similarly, a long hole 32ho extending in the extending direction of the long portion 32b is formed at the center of the long portion 32b.

  In the illustrated example, the short part 32a is arranged in the vertical direction, and the long part 32b is arranged in the horizontal direction. The rod 33a of the rod end bearing 33 passes through the long hole 32ho of the short portion 32a. On the other hand, a fixing screw 38a is passed through the elongated hole 32ho of the longitudinal portion 32b. The short portion 32a fixes the rod end bearing 33 with a fixing screw 38b. Further, the longitudinal portion 32b is fixed to the mounting base 31 with fixing screws 38a.

  The rod end bearing 33 includes a rod 33 a having a male thread, a spherical bearing 33 b formed in a spherical shape, and a cylindrical holder 33 c for holding the prism pole 15. The spherical bearing 33b is arranged at the tip of the rod 33a. The cylindrical holder 33c is arranged inside the spherical bearing 33b.

  The nut 33 and the washer 35 are attached to the rod 33a. After the rod 33a is passed through the long hole 32ho of the short portion 32a of the L-shaped bracket 32, the fixing screw 38a is attached. Thus, the rod end bearing 33 is attached to the L-shaped bracket 32.

  However, in the L-shaped bracket 32, the short part 32a can be arranged in the horizontal direction, and the long part 32b can be arranged in the vertical direction. In this case, the longitudinal portion 32b fixes the rod end bearing 33 with the fixing screw 38b. The short portion 32a is fixed to the mounting base 31 with a fixing screw 38a.

  The prism pole 15 is attached to the cylindrical holder 33c of the rod end bearing 33. The rod end bearing 33 rotatably holds the prism pole 15 with a spherical bearing 33b. A prism target 11, a level 12, a balancer 13, and a height adjusting ring 14 are attached to the prism pole 15.

  As shown in FIG. 3, the prism target 11 has a prism 11a that reflects laser light, and a frame 11b that covers the upper and lower surfaces of the prism 11a. The prism target 11 is formed with a through-hole 11ho penetrating vertically. The prism target 11 is attached to the prism pole 15 through the through hole 11ho.

  As shown in FIG. 4, the level 12 includes a transparent panel 12b in a step portion 12a formed lower than other portions. A circular frame 12ci is formed on the transparent panel 12b. The circular frame 12ci is a pattern formed in a circular shape. Bubbles 12ai are sealed inside the transparent panel 12b. The bubble 12ai enters the inside of the circular frame 12ci when the level 12 is arranged horizontally, and comes off the outside of the circular frame 12ci when the level 12 is not arranged horizontally. Moving. The level 12 has a through-hole 12ho that penetrates in a vertical direction. The level 12 is attached to the prism pole 15 through the through hole 12ho.

  As shown in FIG. 5, the balancer 13 has a plate-like member 13a and a weight 13b. In the illustrated example, the weight 13b is configured by a screw member fastened to the plate-like member 13a. The balancer 13 has a through-hole 13ho penetrating vertically. The balancer 13 is attached to the prism pole 15 through the through hole 13ho.

<Example of surveying work using surveying tool>
Hereinafter, an example of a surveying operation using the surveying tool 10 will be described with reference to FIGS. FIG. 6 is a flowchart illustrating an example of a surveying operation using the surveying tool 10. FIG. 7 is an explanatory diagram of the vertical setting of the prism pole 15 in the survey tool 10. FIG. 8 is an explanatory diagram illustrating an example of use of the survey tool 10.

  Here, a description will be given assuming that the floor surface at the place where the surveying work is performed is a relatively flat surface such as a level ground. That is, the description will be made assuming that the surveying tool 10 is used in a relatively flat place.

  In addition, here, description will be made on the assumption that data such as a design drawing regarding a place where the surveying work is performed is registered in the total station TS in advance. Also, a description will be given assuming that two reference points Pst1 and Pst2 (see FIG. 8) for specifying the three-dimensional coordinates of each position are set in advance at the place where the surveying work is performed. Note that the two reference points Pst1 and Pst2 (see FIG. 8) are known points specified from a design drawing or the like relating to a place where the surveying work is performed.

  Also, here, the description will be given assuming that the total station TS is an automatic collimation / tracking type device that automatically recognizes and tracks the prism target 11 that is the survey target. Such a total station TS automatically recognizes and tracks the prism target 11 held by the prism holder 20 even when the operator moves the prism holder 20. Then, the total station TS automatically measures the distance and angle from itself to the prism target 11 (object to be measured).

  When performing surveying work, the operator assembles the surveying tool 10. That is, as shown in FIG. 1, an operator holds the prism pole 15 with the prism holder 20, and attaches the prism target 11, the level 12, the balancer 13, and the height adjustment ring 14 to the prism pole 15.

  At this time, the prism target 11, the level 12, and the balancer 13, which are relatively heavy, are mounted at positions below the rod end bearing 33 (bearing portion) of the prism pole 15. Therefore, the prism pole 15 held by the prism holder 20 is freely rotated by the rod end bearing 33 (bearing portion), and is naturally oriented vertically.

  Thereafter, the operator places the total station TS at an arbitrary location and activates the total station TS. Thereby, the surveying operation is started.

  As shown in FIG. 6, when performing the surveying work, first, the operator performs a vertical adjustment operation of the prism pole 15 (step S105). The vertical adjustment operation is an operation of setting the direction of the prism pole 15 to the vertical direction (that is, setting the direction of the prism target 11 to the horizontal direction) (see an arrow A15 in FIG. 7).

  As described above, the prism pole 15 held by the prism holder 20 is freely rotated by the rod end bearing 33 (bearing portion), and is naturally oriented vertically. In the vertical adjustment operation, the operator places the balancer 13 around the axis of the prism pole 15 so that the bubbles 12ai (see FIG. 4) of the level 12 enter the inside of the circular frame 12ci (see FIG. 4) of the level 12. Rotate (see arrow A13 in FIG. 7).

  At this time, the spherical bearing 33b of the rod end bearing 33 slightly rotates according to the position of the balancer 13 (see the arrow A33 in FIG. 7). Thereby, the direction of the prism pole 15 fluctuates minutely. As a result, the direction of the prism target 11 fluctuates minutely. Then, the worker stops the rotation of the balancer 13 when the bubble 12ai (see FIG. 4) of the level 12 enters the inside of the circular frame 12ci (see FIG. 4) of the level 12. Thus, the operator can perform leveling of the level 12 (operation of adjusting the level 12 to a horizontal position) only by rotating the balancer 13 about the axis of the prism pole 15. As a result, the operator can accurately set the direction of the prism pole 15 to the vertical direction (see the arrow A15 in FIG. 7). That is, the operator can accurately set the direction of the prism target 11 to the horizontal direction.

  After step S105, the operator moves the surveying tool 10 to the vicinity of the first reference point Pst1 (see FIG. 8), and arranges the prism pole 15 at the first reference point Pst1 (see FIG. 8). (Step S110). As a result, the prism target 11 (the object to be measured) is arranged on the first reference point Pst1 (see FIG. 8).

  At this time, the survey tool 10 moves while the direction of the prism pole 15 is maintained in the vertical direction by the rotation of the ball casters 41 arranged on each leg 22a of the prism holder 20. That is, the surveying tool 10 moves while keeping the orientation of the prism target 11 (the surveying target) in the horizontal direction so that the balancer 13 does not move (the same applies hereinafter).

  The total station TS automatically recognizes and tracks the prism target 11 (object to be surveyed), and specifies the distance and angle (direction) from the total station TS to the prism target 11 (object to be surveyed) (step S115).

  After step S115, the operator moves the surveying tool 10 to the vicinity of the second reference point Pst2 (see FIG. 8), and arranges the prism pole 15 at the second reference point Pst2 (see FIG. 8). (Step S120). As a result, the prism target 11 (object to be surveyed) is arranged on the second reference point Pst2 (see FIG. 8).

  The total station TS automatically recognizes and tracks the prism target 11 (object to be surveyed), and specifies the distance and angle (direction) from the total station TS to the prism target 11 (object to be surveyed) (step S125).

  After step S125, based on the distance and the angle specified in step S115, and the distance and the angle specified in step S125, the total station TS determines a point where the total station TS is installed (an installation point Pts (see FIG. 8). )) Is specified (step S130). After the total station TS specifies the position of the installation point Pts (see FIG. 8), the operator can freely move the surveying tool 10 to an arbitrary point (see an arrow A10 in FIG. 8).

  After step S130, the total station TS instructs the worker to move the surveying tool 10 to a point to be surveyed (for example, the surveying point P1 (see FIG. 8)) by wireless communication via the mobile device MB (step S130). S135).

  In response to the instruction, the operator moves the surveying tool 10 to the vicinity of the survey point P1 (see FIG. 8) (see the arrow A10 in FIG. 8), and places the prism pole 15 at the survey point P1 (see FIG. 8). (Step S140). As a result, the prism target 11 (object to be surveyed) is arranged above the survey point P1 (see FIG. 8). At this time, the state of the prism pole 15 set by the vertical adjustment operation in step S105 is maintained. Therefore, the direction of the prism pole 15 is maintained in the vertical direction (see the arrow A15 in FIG. 8).

  The total station TS automatically recognizes and tracks the prism target 11 (object to be surveyed), and specifies the distance and angle (direction) from the total station TS to the prism target 11 (object to be surveyed) (step S145).

  Then, the total station TS uses the first reference point Pst1 (see FIG. 8) as a reference for the three-dimensional coordinates, and based on the distance and the angle specified in step S145, determines the three-dimensional position of the survey point P1 (see FIG. 8). The coordinates are calculated (step S150).

  After step S150, the total station TS determines whether or not the surveying of all preset surveying points has been completed (step S155). If it is determined in step S155 that the surveying of all the preset surveying points has not been completed ("No"), the process returns to step S135. On the other hand, in the determination of step S155, it is determined that the surveying of all the preset surveying points has been completed, or an instruction has been issued by the operator to stop the surveying work via the mobile device MB (see FIG. 1). In this case (in the case of “Yes”), the processing of the series of routines ends.

<Main features of prism holder and survey tool>
(1) The prism holder 20 according to the present embodiment is provided with a holding unit 21 for holding a prism pole 15 (pole) to which the prism target 11 and the level 12 are attached, and is disposed below the holding unit 21; And a leg portion 22a that contacts the floor surface. The holding section 21 has a rod end bearing 33 (bearing section) for rotatably holding the prism pole 15. The leg portion 22a has a rotatable ball caster 41 (moving portion) at a position in contact with the floor surface.

  In such a prism holder 20, the prism pole 15 (pole) is rotatably held by the rod end bearing 33 (bearing portion), so that the prism pole 15 (pole) is oriented vertically. Can be. Therefore, the prism holder 20 can easily set the direction of the prism pole 15 (pole) to the vertical direction. That is, the prism holder 20 can easily set the direction of the prism target 11 in the horizontal direction. Further, the prism holder 20 maintains the orientation of the prism pole 15 in the vertical direction so that the balancer 13 does not move due to the rotation of the ball caster 41 (moving portion) (that is, the prism target 11 ( The surveying object) can be moved in a state where the orientation is maintained in the horizontal direction. Such a prism holder 20 can reduce the burden on the operator in the surveying work. Further, the prism holder 20 can also shorten the time of the surveying operation.

  In the present embodiment, the bearing portion is constituted by a rod end bearing 33 having a spherical bearing 33b. However, the bearing part can be constituted by the spherical bearing 33b alone.

  (2) The holding part 21 of the prism holder 20 according to the present embodiment holds a rod end bearing 33 (bearing part), an L-shaped bracket 32 that holds the rod end bearing 33, and an L-shaped bracket 32. And a mounting base 31.

  By changing the direction of the L-shaped bracket 32 (the direction of the short part 32a and the long part 32b), the distance between the mounting base 31 and the prism pole 15 (pole) and the prism pole The height change amount can be increased. Therefore, the prism holder 20 can improve the easiness of the surveying operation.

  (3) The prism holder 20 according to the present embodiment has a telescopic part 42 that is configured to be telescopic at an intermediate part of each leg 22a.

  In such a prism holder 20, since the length of each leg 22a can be expanded and contracted by the expansion and contraction portion 42, the height of the prism pole 15 can be easily changed. Therefore, the prism holder 20 can improve the easiness of the surveying operation.

  (4) The surveying tool 10 according to the present embodiment includes a prism pole 15 on which a prism target 11, a level 12, and a balancer 13 are mounted, and the prism holder 20 described above. The balancer 13 is attached to the prism pole 15 so as to be rotatable around the axis of the prism pole 15.

  The prism pole 15 held by the prism holder 20 is freely rotated by the rod end bearing 33 (bearing portion), and is naturally oriented vertically. The operator rotates the balancer 13 around the axis of the prism pole 15. Thus, the operator can perform leveling of the level 12 (operation of adjusting the level 12 to a horizontal position) only by rotating the balancer 13 about the axis of the prism pole 15. As a result, the surveying tool 10 changes the direction of the prism pole 15 minutely and sets it accurately in the vertical direction (that is, changes the direction of the prism target 11 minutely and sets it accurately in the horizontal direction). Can be.

  (5) In the surveying tool 10 according to the present embodiment, the prism target 11, the level 12 and the balancer 13 are connected to the rod end bearing 33 (bearing) of the prism holder 20 for rotatably holding the prism pole 15 (pole). Part).

  In such a surveying tool 10, a heavy object is arranged at a position below the rod end bearing 33 (bearing portion). Therefore, the surveying tool 10 can naturally direct the prism pole 15 in the vertical direction (that is, direct the prism target 11 in the horizontal direction). The survey tool 10 can also simplify the structure.

  As described above, according to the prism holder 20 according to the present embodiment, the burden on the operator in the surveying work can be reduced.

  The present invention is not limited to the embodiments described above, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of the embodiment can be replaced with another configuration, and another configuration can be added to the configuration of the embodiment. Further, it is possible to add / delete / replace another configuration with respect to a part of each configuration.

Reference Signs List 10 surveying tool 11 prism target 11a prism 11b frame 11ho, 12ho, 13ho through hole 12 level 12a step 12b transparent panel 12ai bubble 12ci circular frame 13 balancer 13a plate 13b weight 14 height adjustment ring 15 prism pole )
15a Stone bump 20 Prism holder 21 Holding part 22 Tripod part 22a Leg part 31 Mounting base 32 L-shaped bracket 32a Short part 32b Long part 32ho Long hole 33 Rod end bearing (bearing part)
33a Rod 33b Spherical bearing 33c Cylindrical holder 34 Nut 35 Washer 38a, 38b Fixing screw 41 Ball caster (moving part)
42 Telescopic part MB Mobile device (smartphone)
P1 Survey point Pst1, Pst2 Reference point Pts Installation point TS Total station (ranging angle measuring instrument, 3D measuring device)

Claims (5)

A holding unit that holds a pole on which a prism target and a level are attached,
Legs disposed below the holding portion and in contact with the floor surface,
The holding portion has a bearing portion that rotatably holds the pawl,
A prism holder, wherein the leg has a rotatable moving part at a position in contact with the floor surface. The prism holder according to claim 1,
The bearing unit is configured by a rod end bearing or a spherical bearing,
The prism holder according to claim 1, wherein the moving unit includes a ball caster. The prism holder according to claim 1 or 2,
The holding unit,
The bearing portion,
An L-shaped bracket for holding the bearing portion,
A mount for holding the L-shaped bracket. A prism target irradiated with light,
A level to check whether the prism target is horizontal,
A balancer that sets the orientation of the prism target in the horizontal direction,
A pole on which the prism target, the level, and the balancer are mounted;
A prism holder according to any one of claims 1 to 3,
The surveying tool according to claim 1, wherein the balancer is rotatably attached to the pole around an axis of the pole. The surveying tool according to claim 4,
A surveying tool, wherein the prism target, the level, and the balancer are arranged at a position lower than a bearing of the prism holder that rotatably holds the pole.

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