JP6778044B2 - Target pole and surveying system - Google Patents

Description

The present invention relates to a target pole for performing prism measurement by a surveying device and a surveying system using the target pole.

A target pole indicating a measurement point is used for the prism. The target pole has a pole having a ridge at the lower end, and a target of a retroreflective body such as a prism or a reflective sheet provided on the pole. When performing prism measurement, the three-dimensional coordinates of the measurement point are measured by standing the pole butt on the measurement point and measuring the target with a surveying device.

As the target, a one-element corner cube prism may be used. In the case of a prism, since the apparent optical center (hereinafter referred to as a levitation point) is inside the prism, in the case of a target pole in which a prism is attached to a pole, there is no levitation point vertically above the measurement point.

Therefore, even if the pole is erected vertically on the measurement point, an angle error will occur during automatic collimation depending on whether the prism faces the surveying device or not, and the measurement result also shows. There was an error.

Further, as shown in Patent Document 1, when the prism is faced to the surveying device, the levitation point is located on the axis of the pole in order to prevent the angle error and the measurement error that occur when the prism is not faced. There is also a target pole with a prism in the middle of the pole.

In the case of the above target pole, since the pole rotates about the levitation point, no angle error or measurement result error occurs during automatic collimation regardless of whether the prism faces the surveying device. However, since the pole is divided into upper and lower parts by the prism, it is necessary to replace or add the pole when changing the height of the prism.

As a device for making the prism face the surveying device, there is a facing device such as a reflection prism shown in Patent Document 2.

Japanese Unexamined Patent Publication No. 2006-162444 Japanese Unexamined Patent Publication No. 2001-165662

The present invention provides a target pole and a surveying system in which the height of a target can be easily adjusted and the position of a floating point is constant regardless of the orientation of the target.

In the present invention, a target holder for holding a target of a retroreflector, a pole on which the target holder is slidably provided, an offset plate to which the pole is attached, and attachment so as to project downward to the offset plate. It relates to a target pole having a provided stab and configured such that the optical center of the target is located on the axis of the stab.

Further, in the present invention, the pole is cylindrical, a first alignment line is formed on the upper surface of the target holder, and a second alignment line parallel to the axis of the pole is formed on the peripheral surface of the pole. It relates to a target pole whose optical center is located on the axis of the stone tip at a position where the first alignment line and the second alignment line meet.

Further, in the present invention, the pole is cylindrical, an alignment groove is formed parallel to the axis of the pole, the target holder has a lock screw that can be fitted into the alignment groove, and the lock screw and the above. It relates to a target pole whose optical center coincides with the axis of the ridge when fitted with the alignment groove.

Further, the present invention relates to a target pole in which the pole is a polygonal columnar shape.

Further, the present invention relates to a target pole that is orthogonal to the axis of the stone tip and is rotatably provided about the axis passing through the optical center.

Further, in the present invention, the target holder is composed of a holding portion for holding the target and a slide portion slidably provided on the pole, and the holding portion is formed by the stone tip with respect to the slide portion. It relates to a target pole that is orthogonal to the axis and is rotatable about a horizontal axis that passes through the optical center.

Further, the present invention relates to a target pole provided in the holding portion so that the target is orthogonal to the horizontal axis and can rotate around the axis passing through the optical center.

The present invention also relates to a target pole in which a pole insertion hole is formed in the offset plate so that the pole can be inserted and removed from the pole insertion hole.

The present invention also relates to a target pole in which a plurality of pole insertion holes having different distances from the axis of the stone tip are formed in the offset plate, and the pole can be inserted and removed in the pole insertion hole. It is a thing.

Further, in the present invention, the target relates to a target pole which is a one-element prism or a reflective sheet.

Furthermore, the present invention is a surveying system that performs prism measurement on a target pole set up at a measurement point, and the surveying device is provided with a surveying device main body that can rotate horizontally and a surveying device main body that can rotate vertically. The telescope unit, the distance measuring unit that is housed in the telescope unit, emits distance measuring light, receives the reflected distance measuring light from the target to perform distance measurement, and the horizontal angle that detects the horizontal angle of the surveying apparatus main body. It has a detector and a vertical angle detector that detects the vertical angle of the telescope unit, and the target pole includes a target holder that holds the target, a pole that slidably supports the target holder, and the pole. The present invention relates to a surveying system having an offset plate to which a plumb bob is attached and a plumb bob protruding downward from the lower surface of the offset plate, and the optical center of the target is located on the axis of the plumb bob.

According to the present invention, a target holder for holding a target of a retroreflector, a pole on which the target holder is slidably provided, an offset plate to which the pole is attached, and a downward protrusion on the offset plate. Since the target is provided with a stab mounted in such a manner and the optical center of the target is located on the axis of the stab, the levitation point can be rotated even when the stab is rotated about the axis of the stab. The position is constant, and the height of the target can be easily adjusted by sliding the target holder.

Further, according to the present invention, it is a surveying system that performs prism measurement on a target pole set up at a measurement point, and the surveying device is provided with a surveying device main body that can rotate horizontally and a surveying device main body that can rotate vertically. The telescope unit, the distance measuring unit that is housed in the telescope unit, emits distance measuring light, receives the reflected distance measuring light from the target to perform distance measurement, and the horizontal that detects the horizontal angle of the surveying device main body. It has an angle detector and a vertical angle detector that detects the vertical angle of the telescope unit, and the target pole includes a target holder that holds the target, a pole that slidably supports the target holder, and the like. Since it has an offset plate to which a pole is attached and a plumb bob protruding downward from the lower surface of the offset plate, and the optical center of the target is located on the axis of the surveying, the axis of the surveying can be set. Since the position of the optical center is constant even when rotated to the center and no angle error or measurement error occurs even when the target does not face the surveying device, the target is roughly the surveying device. It has an excellent effect that workability can be improved by simply turning it toward.

It is a perspective view which shows the target pole which concerns on 1st Example of this invention. It is a perspective view which shows the surveying system using the target pole. It is a flowchart explaining the prism measurement by the surveying system. It is a perspective view which shows the target pole which concerns on 2nd Example of this invention. It is a perspective view which shows the target pole which concerns on 3rd Example of this invention. It is a top view which shows the target pole which concerns on 3rd Example of this invention. It is a perspective view which shows the target pole which concerns on 4th Example of this invention. It is a top view which shows the target pole which concerns on 4th Example of this invention. It is a perspective view which shows the target pole which concerns on 5th Example of this invention. It is a perspective view which shows the target pole which concerns on 6th Example of this invention. (A) is a front view showing a target pole according to a seventh embodiment of the present invention, and (B) is a front view showing a target pole according to a modified example of the seventh embodiment. (A) is a front view showing a target pole according to an eighth embodiment of the present invention, and (B) is a top view showing the target pole. (A) is a front view showing a target pole according to a ninth embodiment of the present invention, and (B) is a top view showing the target pole. (A) and (B) are explanatory views explaining a state in which the target is horizontally rotated on the target pole, and (C) and (D) are explanatory views explaining a state in which the target is vertically rotated on the target pole. Is. It is a perspective view which shows the target pole which concerns on 10th Example of this invention.

Hereinafter, examples of the present invention will be described with reference to the drawings.

First, in FIG. 1, the target pole 1 according to the first embodiment of the present invention will be described.

For example, the target 2 which is a prism of one element is held in the target holder 3. A columnar pole 4 penetrates the target holder 3, and the target holder 3 is slidable with respect to the pole 4.

Further, a lock screw 5 is screwed into the target holder 3, and the lock screw 5 is tightened and pressed against the pole 4, so that the target holder 3 is supported by the pole 4 at a desired height. ing.

Further, a bubble tube 6 is provided on the upper surface of the target holder 3, and the bubble tube 6 can detect the horizontal of the target holder 3, that is, the horizontal of the optical axis of the target 2. When the target holder 3 becomes horizontal, the relationship between the pole 4 and the target 2 is set so that the pole 4 becomes vertical.

An offset plate 7 is fixed to the lower end of the pole 4 by a necessary means such as screwing. The offset plate 7 is orthogonal to the axis of the pole 4, and a stone tip 8 is projected downward from the offset plate 7.

The bottom end of the stone tip 8 has a tapered shape, and the lower end is a tip. Further, the stone tip 8 has an axial center perpendicular to the lower surface of the offset plate 7 and parallel to the axial center of the pole 4. Further, an apparent optical center (hereinafter, referred to as a levitation point 9) of the target 2 is located on the axis of the stone tip 8.

That is, the target 2 and the pole 4 are offset from the stone tip 8 by the distance d between the pole 4 and the levitation point 9 by the offset plate 7.

The pole 4 may be provided with a scale or the like. By providing the scale, the position of the target 2 with respect to the pole 4 can be confirmed. Therefore, the vertical position of the levitation point 9 with respect to the tip of the stab 8 (the measurement point 11 on which the stab 8 is erected) can be known.

When installing the target pole 1, first loosen the lock screw 5 and slide the target holder 3 to adjust the height of the target 2. Next, the stone tip 8 is erected on the predetermined measurement point 11, and the inclination of the pole 4 is adjusted so that the bubble tube 6 detects the horizontal.

At the time of horizontal detection of the bubble tube 6, the axes of the pole 4 and the stone tip 8 are vertical. Further, since the levitation point 9 is located on the axis of the stone tip 8, the levitation point 9 is located vertically above the measurement point 11. Therefore, since the rotation centered on the stone tip 8 is the rotation centered on the levitation point 9, the position of the levitation point 9 does not change even if the target pole 1 is horizontally rotated.

Next, in FIG. 2, a surveying system using the target pole 1 will be described.

In FIG. 2, reference numeral 12 denotes a surveying device such as a total station. The surveying device 12 has a surveying device main body 13 and a horizontal rotating portion 14, and is installed at a known point via a support device such as a tripod 15.

The horizontal rotation unit 14 has a horizontal rotation motor (not shown), and is capable of rotating the surveying device main body 13 in the horizontal direction by 360 ° around the vertical axis. The amount of rotation of the surveying device main body 13, that is, the horizontal angle is detected by a horizontal angle detector (not shown).

Further, the surveying device main body 13 has a display unit 16 for displaying a measurement result, a progress state of measurement, and the like, and an operation unit 17 for setting measurement conditions and displaying the measurement result. The display unit 16 may be used as a touch panel as a display unit and an operation unit.

The surveying device main body 13 has a telescope portion 18, and the telescope portion 18 is supported by a rack portion 19. The telescope unit 18 is rotated in the vertical direction by a vertical rotation unit (not shown) having a vertical rotation motor (not shown) about a horizontal axis. The amount of rotation of the telescope unit 18, that is, the vertical angle is detected by a vertical angle detector (not shown). The horizontal rotation unit 14 and the vertical rotation unit constitute a drive unit that rotates the telescope unit 18 in the horizontal direction and the vertical direction.

The telescope unit 18 includes a collimation telescope (not shown) and a distance measuring unit (not shown). The collimation telescope has a viewing angle of about 5 ° and can collimate the target 2. Further, the distance measuring unit emits the distance measuring light and receives the reflected distance measuring light reflected by the target 2, so that the target 2 can be measured.

The collimation optical axis 21 and the distance measurement optical axis 22 are coaxial. Further, the telescope unit 18 may include a tracking unit (not shown). The tracking unit emits tracking light on the tracking optical axis, receives the reflected light from the target 2, and tracks the target 2 based on the light reception result. Further, the telescope unit 18 may include an imaging unit for automatic collimation of the target 2.

Next, a case where prism measurement using the target pole 1 according to the first embodiment will be performed using the flowchart of FIG. 3 will be described.

STEP: 01 First, the lock screw 5 is loosened and the target holder 3 is slid to adjust the height of the target 2 so that the target 2 has a desired height.

STEP: 02 Next, the stone tip 8 is placed on the predetermined measurement point 11, and the target pole 1 is erected.

STEP: 03 When the target pole 1 is erected, the target pole 1 is then rotated horizontally around the stone tip 8 to direct the target 2 toward the surveying device 12. At this time, it is not necessary to accurately face the target 2 and the surveying device 12, and it is sufficient that the target 2 is roughly facing the surveying device 12.

STEP: 04 After pointing the target 2 toward the surveying device 12, the inclination of the target pole 1 is adjusted so that the bubble tube 6 detects the horizontal, and the target pole 1 is supported so as to be vertical.

STEP: 05 When the adjustment of the target pole 1 is completed, the surveying device 12 collimates the target 2. The collimation of the target 2 may be performed manually by the operator via the collimation telescope, or may be automatically performed by image processing based on the image acquired through the collimation telescope.

STEP: 06 Finally, the target 2 is measured by the distance measuring unit, and control (not shown) is performed based on the horizontal angle and the vertical angle at the time of distance measurement and the distance between the measuring point 11 and the floating point 9. The unit calculates the three-dimensional coordinates of the measurement point 11, and the measurement of the measurement point 11 is completed.

When tracking the target 2, the tracking unit emits tracking light, and the target 2 is tracked while the target pole 1 is moving. When the target pole 1 is installed, the measurement of the target 2 is continuously performed.

As described above, in the first embodiment, the axis of the pole 4 is offset from the axis of the stone tip 8 by the offset plate 7, and the offset distance d is the axis of the pole 4 and the levitation point. It is equal to the distance to 9.

Therefore, when the target pole 1 is vertical, the levitation point 9 can be positioned on the axis of the stone tip 8, that is, vertically above the measurement point 11, and the target 2 is the levitation point. Rotate around 9.

Further, in a state where the target pole 1 is vertical, the floating point 9 is always located vertically above the measurement point 11 regardless of the orientation of the target 2, so that the target 2 is measured by the surveying device 12. When this is done, no angle error or measurement error occurs regardless of the orientation of the target 2.

Therefore, when performing prism measurement, it is not necessary to accurately face the target 2 with the surveying device 12, so that the target pole 1 can be easily installed and workability can be improved.

Further, since the target holder 3 holding the target 2 is slidable along the pole 4, the height of the target 2 can be changed as needed. Therefore, in order to change the height of the target 2, it is not necessary to replace or add the pole 4, and workability can be improved and costs can be reduced.

In the first embodiment, the stab 8 is fixed to the lower surface of the offset plate 7, but the stab 8 can be slid horizontally along the offset plate 7 to obtain a required offset. The distance d between the axis of the stone tip 8 and the axis of the pole 4 may be changed according to the amount.

Next, in FIG. 4, the target pole 1 according to the second embodiment of the present invention will be described. In FIG. 4, those equivalent to those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In the second embodiment, the first alignment line 23, which is the first alignment portion, is formed on the upper surface of the target holder 3. Further, a second alignment line 24, which is a second alignment portion parallel to the axis, is formed on the peripheral surface of the pole 4 over the entire length.

Further, the pole 4 is cylindrical, and the target holder 3 is slidable in the vertical direction and rotatable in the horizontal direction with respect to the pole 4.

At the position where the first alignment line 23 and the second alignment line 24 meet, the levitation point 9 of the target 2 is located on the axis of the stone tip 8. Further, the axis of the pole 4, the axis of the stone tip 8, and the optical axis of the target 2 are present on the same plane.

Therefore, when adjusting the orientation of the target 2, the first alignment line 23 and the second alignment line 24 are matched. As a result, the rotation position of the target holder 3 can be easily determined, and workability can be improved.

Next, in FIGS. 5 and 6, the target pole 1 according to the third embodiment of the present invention will be described. The same reference numerals are given to those equivalent to those in FIGS. 5, 6 and 1, and the description thereof will be omitted.

In the third embodiment, the alignment groove 25 having a substantially triangular cross-sectional shape is carved as the first alignment portion over the entire length in the axial direction.

The tip of the lock screw 5 as the second alignment portion extends into the alignment groove 25, and the tip of the lock screw 5 comes into contact with the slope of the alignment groove 25. When the tip of the lock screw 5 comes into contact with two slopes of the alignment groove 25, the rotation of the target holder 3 with respect to the pole 4 is restricted, and the floating point 9 of the target 2 is the axial center of the stone tip 8. It is designed to be located on the top.

By tightening the lock screw 5 when adjusting the position of the target 2 in the vertical direction, the rotation position of the target holder 3 changes so that the tip of the lock screw 5 evenly hits the slope of the alignment groove 25. ..

Therefore, after changing the vertical position of the target 2, the rotation position of the target 2 is also adjusted by simply tightening the lock screw 5, so that the work for adjusting the rotation position of the target 2 becomes unnecessary and the workability is improved. Can be improved.

In the third embodiment, the alignment groove 25 has a substantially triangular cross-sectional shape, but the alignment groove 25 may have a substantially quadrangular cross-sectional shape. In this case, it is preferable that the tip of the lock screw 5 has a tapered shape.

Next, in FIGS. 7 and 8, the target pole 1 according to the fourth embodiment of the present invention will be described. The same reference numerals are given to those equivalent to those in FIGS. 7, 8 and 1, and the description thereof will be omitted.

In the first to third embodiments, the pole 4 is cylindrical, but in the fourth embodiment, the pole 4 is prismatic, for example, a prism, and the hole through which the pole 4 is inserted is rectangular. There is.

By making the pole 4 a square columnar shape and a hole having a square shape, the rotation of the target holder 3 is restrained by the fitting of the pole 4 and the hole. Therefore, when adjusting the position of the target 2 in the vertical direction, the target holder 3 does not shift in the rotational direction, so that the position adjustment in the rotational direction of the target 2 becomes unnecessary and workability can be improved. it can.

Needless to say, the shape of the pole 4 may be a triangular columnar column, a hexagonal columnar column, or another polygonal columnar column.

Next, in FIG. 9, the target pole 1 according to the fifth embodiment of the present invention will be described. In FIG. 9, those equivalent to those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In the fifth embodiment, the pole 4 and the offset plate 7 are separate members. The offset plate 7 is provided with a pole insertion hole 26 and a fixing screw 27 extending into the pole insertion hole 26. Further, a stone tip 28 is provided at the lower end of the pole 4.

The pole insertion hole 26 fits tightly with the pole 4, and the axis of the pole insertion hole 26 is parallel to the axis of the stone tip 8. Further, the distance between the axis of the stone thrust 8 and the axis of the pole insertion hole 26 coincides with the distance between the levitation point 9 of the target 2 and the axis of the pole 4.

The pole 4 is fixed to the offset plate 7 by inserting the lower end into the pole insertion hole 26 and then tightening the fixing screw 27. By attaching the pole 4 to the offset plate 7, the levitation point 9 is located on the axis of the stone tip 8.

It is desirable to provide a scale or the like on the peripheral surface of the pole 4 so that the insertion depth of the pole 4 into the offset plate 7 can be confirmed.

In the fifth embodiment, since the pole 4 and the offset plate 7 are detachable, when the offset of the levitation point 9 is unnecessary, such as when the target 2 is manually collimated. The pole 4 can be removed from the offset plate 7, and the stone tip 28 can be set up at the measurement point 11 for measurement.

Therefore, by attaching / detaching the pole 4 to / from the offset plate 7, it is possible to properly use the levitation point 9 when it is offset or not, so that the versatility of the target pole 1 can be enhanced.

The pole 4 may be various conventional target poles having no levitation point on the axis of the stone tip. In this case, the offset plate 7 and the stab 8 function as an offset unit for locating the floating point of the conventional target pole on the axis of the stab.

In the fifth embodiment, the target pole 1 according to the present embodiment can be obtained by attaching the conventional target pole to the offset plate 7. Therefore, all that is required is an offset unit including the offset plate 7 and the stab 8 and the like, which can increase versatility and reduce manufacturing costs.

Next, in FIG. 10, the target pole 1 according to the sixth embodiment of the present invention will be described. In addition, in FIG. 10, those equivalent to those in FIGS. 4 and 9 are designated by the same reference numerals, and the description thereof will be omitted.

In the sixth embodiment, as in the second embodiment, the first alignment line 23, which is the first alignment portion, is formed on the upper surface of the target holder 3, and the second alignment portion is formed on the peripheral surface of the pole 4. A second alignment line 24 is formed.

Further, a third alignment line 29, which is a third alignment portion, is formed on the upper surface of the offset plate 7. Other configurations are the same as those in the fifth embodiment.

When the first alignment line 23 matches the second alignment line 24 and the second alignment line 24 matches the third alignment line 29, the target is on the axis of the stone tip 8. The levitation point 9 of 2 is located.

Therefore, when the pole 4 is attached to the offset plate 7, the rotation position of the target 2 can be easily determined by matching the second alignment line 24 with the third alignment line 29. ..

Next, a seventh embodiment of the present invention will be described with reference to FIG. 11 (A). In FIG. 11A, those equivalent to those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In the seventh embodiment, the target holder 3 has a rectangular frame shape and is slidable along the pole 4. The target 2 is housed inside the target holder 3 and is rotatably attached to the target holder 3 via a rotating shaft 31 having an axial center orthogonal to the axial center of the pole 4. An appropriate frictional force is provided between the target holder 3 and the rotating shaft 31, so that the target 2 can be fixed at an arbitrary position.

The target 2 is provided so that the optical axis of the target 2 is perpendicular to the plane including the axis of the pole 4 and the axis of the stone tip 8.

When the stab 8 is set up at the measurement point 11 and the target pole 1 is vertical, the levitation point 9 of the target 2 is located on the axis of the rotation shaft 31, and the axis of the stab 8 is also located. Located on top.

Therefore, the target 2 rotates horizontally about the axis of the stone tip 8 and vertically rotates about the axis of the rotation shaft 31 without changing the position of the levitation point 9. 2 can be more easily directed to the surveying device 12 (see FIG. 2), and workability can be improved.

FIG. 11B shows a modified example of the seventh embodiment. In the modification, the target 2 is provided on the target holder 3 so that the axis of the target 2 is included in a plane including the axis of the pole 4 and the axis of the stone tip 8. ..

Next, an eighth embodiment of the present invention will be described with reference to FIGS. 12 (A) and 12 (B). In FIGS. 12 (A) and 12 (B), those equivalent to those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In the eighth embodiment, the target holder 3 is composed of a holding portion 32 and a sliding portion 33. The holding portion 32 is a member having a U-shaped cross section, and the target 2 is housed in the recess. Further, the holding portion 32 is rotatably provided on the slide portion 33 via a rotating shaft 34 having an axial center orthogonal to the axial center of the pole 4, and the optical axis of the target 2 is the axial center of the rotating shaft 34. Is orthogonal to.

Further, the slide portion 33 has a lock screw 5 and a bubble tube 6, is slidably attached to the pole 4 in the vertical direction, and can be fixed by the lock screw 5 at an arbitrary position.

The target 2 rotates vertically to the holding portion 32 via the rotation axis 34 so that the optical axis of the target 2 is orthogonal to the surface including the axis of the pole 4 and the axis of the stone tip 8. It is provided as possible. The levitation point 9 of the target 2 is located at the intersection of the axis of the rotation shaft 34 and the axis of the stone tip 8. An appropriate frictional force is provided between the rotating shaft 34 and the slide portion 33, and the holding portion 32 can be fixed at an arbitrary position.

In the eighth embodiment, the levitation point 9 is not changed in position, but is horizontally rotated about the axis of the stone tip 8, vertically rotated about the axis of the rotating shaft 34, and the seventh. Since the configuration of the target holder 3 is simplified as compared with the embodiment of the above, it is possible to improve workability and reduce the manufacturing cost.

Next, a ninth embodiment of the present invention will be described with reference to FIGS. 13 (A), 13 (B), and 14 (A) to 14 (D). The same reference numerals are given to those equivalent to those in FIGS. 13 (A), 13 (B), 14 (A) to 14 (D), 12 (A) and 12 (B). , The description is omitted.

In the ninth embodiment, the target holder 3 is composed of a holding portion 32 and a sliding portion 33. The slide portion 33 has a lock screw 5 and a bubble tube 6, and is slidably attached to a pole 4 in the vertical direction. Further, the slide portion 33 is provided with a vertical rotation shaft 35 having an axis orthogonal to the axis of the pole 4, and the holding portion 32 is rotatably provided on the slide portion 33 via the vertical rotation shaft 35. Has been done. Further, an appropriate frictional force is provided between the holding portion 32 and the vertical rotating shaft 35, and the holding portion 32 can be fixed at an arbitrary position.

The holding portion 32 is a U-shaped member having a recess whose cross section is open to the side, and a horizontal rotating shaft 36 having an axial center orthogonal to the axial center of the vertical rotating shaft 35 is provided. .. Further, the target 2 is housed in the recess, and the target 2 is provided so as to be horizontally rotatable via the horizontal rotation shaft 36. Further, an appropriate frictional force is provided between the holding portion 32 and the horizontal rotating shaft 36, and the holding portion 32 can be fixed at an arbitrary position.

The levitation point 9 of the target 2 is located at the intersection of the axis of the vertical rotation axis 35, the axis of the horizontal rotation axis 36, and the axis of the stone tip 8. When the axis of the horizontal rotating shaft 36 is parallel to the axis of the pole 4, the axis of the horizontal rotating shaft 36 coincides with the axis of the stone tip 8.

In the ninth embodiment, the target 2 can be rotated horizontally around the levitation point 9, that is, without changing the position of the levitation point 9 (see FIGS. 14A and 14B). It can be further rotated vertically (see FIGS. 14 (C) and 14 (D)).

The target 2 can be freely oriented in a desired direction by the cooperation of the rotation via the vertical rotation shaft 35 and the rotation via the horizontal rotation shaft 36.

Therefore, it is only necessary to direct the target 2 toward the surveying device 12, and it is not necessary to rotate the target pole 1 itself. Therefore, the measurement of the measurement point 11 at a position where the rotation of the target pole 1 is hindered, such as near a wall, can be performed. This makes it possible and the workability can be further improved.

Next, a tenth embodiment of the present invention will be described with reference to FIG. The same reference numerals are given to those equivalent to those in FIGS. 15 and 9, and the description thereof will be omitted.

In the tenth embodiment, the offset plate 37 has a disk shape, and a stone tip 38 hanging from the center is provided on the lower surface of the offset plate 37. Further, a plurality of pole insertion holes 39 (39a to 39d in FIG. 15) are bored in the offset plate 37.

The pole insertion holes 39a to 39d are bored at positions where the distance from the axis of the stone thrust 38 is different, and the distance between the axis of each pole insertion hole 39a to 39d and the axis of the stone thrust 38 is It is known.

By changing the pole insertion holes 39a to 39d into which the pole 4 is inserted, the distance d between the axis of the stone thrust 38 and the axis of the pole 4, that is, the offset amount of the levitation point 9 of the target 2 is changed. can do.

Therefore, it is possible to use various conventional target poles having no levitation point on the axis of the ridge, and when changing the offset amount of the levitation point 9, the pole insertion for inserting the pole 4 is possible. It is only necessary to change the holes 39a to 39d. Therefore, it is not necessary to provide a plurality of offset plates 7 (see FIG. 9) having different offset amounts, and the versatility can be increased and the manufacturing cost can be reduced.

In the tenth embodiment, the offset plate 37 has a disk shape, but the pole insertion hole is formed at a position where the distance from the axis of the stone tip 38 is different, such as a plate having a triangular or quadrangular outer shape. Other shapes may be used as long as they can be formed in a plurality of plates.

Further, in the tenth embodiment, the stone tip 38 is fixed to the offset plate 37 so that the pole 4 can be attached to and detached from the offset plate 37, but the pole 4 is fixed to the offset plate 37. The stone tip 38 may be attached to and detached from the offset plate 37.

In this case, for example, the pole 4 is fixed to one end of the strip-shaped offset plate 37, and a plurality of piercing insertion holes are formed at locations where the distance from the axis of the pole 4 is different, and the required offset is obtained. The stab 38 may be fitted into the stab insertion hole corresponding to the amount.

In the target pole 1 in the second to tenth embodiments, the prism measurement can be performed by the surveying device 12 (see FIG. 2) as in the first embodiment.

Further, it goes without saying that the first to tenth embodiments can be appropriately combined according to the intended use.

1 Target pole 2 Target 3 Target holder 4 Pole 5 Lock screw 7 Offset plate 8 Stone thrust 9 Floating point 11 Measuring point 12 Surveying device 13 Surveying device body 18 Telescope part 23 1st alignment line 24 2nd alignment line 25 Alignment groove 26 Pole insertion hole 29 3rd alignment line 32 Holding part 33 Slide part 37 Offset plate 38 Stone thrust 39 Pole insertion hole

Claims (10)

A target holder that holds the target of the retroreflector, a pole on which the target holder is slidably provided, an offset plate to which the pole is attached, and a stone thruster attached to the offset plate so as to project downward. The offset plate is provided with a pole insertion hole, the pole can be inserted and removed from the pole insertion hole, and the optical center of the target is located on the axis of the stone tip. Target pole that was made. The pole is cylindrical, a first alignment line is formed on the upper surface of the target holder, a second alignment line parallel to the axis of the pole is formed on the peripheral surface of the pole, and the first position is formed. The target pole according to claim 1, wherein the optical center is located on the axis of the stone tip at a position where the alignment line and the second alignment line match. The pole is cylindrical, an alignment groove is formed parallel to the axis of the pole, the target holder has a lock screw that can be fitted into the alignment groove, and the lock screw and the alignment groove The target pole according to claim 1, wherein the optical center of the mating is aligned with the axis of the stone tip. The target pole according to claim 1, wherein the pole is a polygonal columnar shape. The target pole according to any one of claims 1 to 4, wherein the target is orthogonal to the axis of the stone tip and is rotatably provided about the axis passing through the optical center. The target holder is composed of a holding portion for holding the target and a slide portion slidably provided on the pole, and the holding portion is orthogonal to the axis of the stone tip with respect to the slide portion. The target pole according to any one of claims 1 to 4, which is rotatable about a horizontal axis passing through the optical center. The target pole according to claim 6, wherein the target is orthogonal to the horizontal axis and is provided on the holding portion so as to be rotatable about the axis passing through the optical center. Wherein the offset plate, the stone pushing distance between the axis are bored a plurality of different said pole insertion hole, of claims 1 to 7 which enables insertion and removal of the pole to the pole insertion hole The target pole described in any one of them. The target pole according to any one of claims 1 to 8 , wherein the target is a one-element prism or a reflective sheet. A surveying system that performs prism measurement on a target pole set up at a measurement point. The surveying device includes a surveying device body that can rotate horizontally, a telescope unit that is vertically rotatable on the surveying device body, and the surveying device. A distance measuring unit that is housed in a telescope unit, emits distance measuring light, receives reflected distance measuring light from a target to perform distance measurement, a horizontal angle detector that detects the horizontal angle of the surveying apparatus main body, and the telescope. It has a vertical angle detector that detects the vertical angle of the part, and the target pole includes a target holder that holds the target, a pole that slidably supports the target holder, and an offset plate to which the pole is attached. The offset plate has a plumb bob protruding downward from the lower surface of the offset plate, a pole insertion hole is formed in the offset plate, the pole can be inserted and removed from the pole insertion hole, and the optical center of the target. Is a surveying system located on the axis of the plumb bob.

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