JP7240267B2 - Jig - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technique of a jig for supporting a measuring unit having a laser rangefinder.

Conventionally, techniques for pressing concrete into steel pipes for CFT structures are publicly known. For example, it is as described in Patent Document 1.

Patent Literature 1 describes a method of press-fitting concrete into the internal space of a steel pipe by using a pump truck to press-in concrete from a concrete injection port at the bottom of the steel pipe.

In the method described in Patent Document 1, a laser beam emitted from a level measuring device is used to measure the distance to the top of the concrete filled inside the steel pipe on a predetermined measurement floor.

The level measuring instrument is supported so as to be positioned inside the steel pipe on the measurement floor by a jig that is inserted through the concrete injection port of the steel pipe. The jig is cantilevered with respect to one side surface of the steel pipe.

With the jig as described above, it is conceivable that the pointing direction of the level measuring instrument with respect to the top of the concrete is likely to shift. Therefore, there is a demand for a jig that supports the level measuring instrument in such a manner as to prevent the pointing direction from deviating.

JP 2011-196019 A

The present invention has been made in view of the above circumstances, and the problem to be solved is to support a measurement unit directed to the top of concrete in such a manner as to prevent deviation of the pointing direction. It is intended to provide a jig that can be used.

The problems to be solved by the present invention are as described above, and the means for solving the problems will now be described.

That is, in claim 1, a jig for supporting a measuring unit having a laser rangefinder for measuring a distance from above concrete press-fitted into a steel pipe for CFT structure to the top of the concrete, a long support portion that is inserted through an insertion hole provided in a side surface of a steel pipe and supports the measurement unit so that the measurement unit faces downward inside the steel pipe; and fixing means for detachably fixing the one side and the other side.

In claim 2, the fixing means has a magnet portion capable of switching between generation and non-generation of magnetic force.

In claim 3, the supporting portion is provided with an arm portion extending on both sides in a direction perpendicular to the longitudinal direction of the supporting portion, and the fixing means is provided on one side in the longitudinal direction of the supporting portion. , a first fixing means that can be fixed to the inner surface of the steel pipe; and second fixing means that can be fixed to both side portions of the insertion hole.

In claim 4, the arm portion is provided so as to extend to both left and right sides, and the second fixing means is capable of being fixed to both left and right side portions of the insertion hole, and is fixed to the steel pipe. and a vertical position adjusting means capable of adjusting the vertical positions of the left and right side portions of the arm portion.

In claim 5, the support portion includes a first rail portion and a second rail portion provided movably in the longitudinal direction of the support portion with respect to the first rail portion. , the fixing means is provided on one of the first rail portion and the second rail portion, and the measuring unit is provided on the other.

In claim 6, a wiring space is formed in at least one of the first rail portion and the second rail portion for arranging wiring connected to the measurement unit. be.

In claim 7, further comprising a bracket that is fixed to the measurement unit and is fixed to an upper surface of either one of the first rail portion and the second rail portion. is.

In claim 8, the support section includes a first rail section and a second rail section provided movably in the longitudinal direction of the support section with respect to the first rail section. , the fixing means is provided on one of the first rail portion and the second rail portion, and the measuring unit is provided on the other, and a reference for adjusting the position of the measuring unit inside the steel pipe It further comprises a scale portion that becomes

In claim 9, the fixing means has a magnet portion capable of switching between generation and non-generation of magnetic force, and at least the magnet portion of the fixing means fixed to the inner surface of the steel pipe generates and generates magnetic force. It is equipped with an operating means capable of operating the non-generating switching outside the steel pipe.

In claim 10, the support section rotatably supports the measurement unit so that the measurement unit faces downward due to its own weight.

In claim 11, the support section includes a receiving section that detachably and rotatably receives the measuring unit, and a restricting section that restricts the measuring unit from falling off from the receiving section. .

As effects of the present invention, the following effects are obtained.

In claim 1, the measurement unit directed to the top of the concrete can be supported so as to be able to suppress deviation of the pointing direction.

In claim 2, the fixing means can be easily attached to and detached from the steel pipe by generating and not generating magnetic force.

In claim 3, the measurement unit can be more stably supported by fixing the support portion to the steel pipe at three points.

In claim 4, the measurement unit can be supported more favorably.

In claim 5, the measurement unit can be supported more favorably.

In claim 6, the wiring space can be used to perform wiring in a suitable manner.

In claim 7, it is possible to prevent the measuring unit from falling.

In claim 8, the position of the measuring unit can be easily adjusted.

In claim 9, it is possible to easily attach and detach the fixing means fixed to the inner surface of the steel pipe.

In claim 10, the measurement unit can be easily directed to the top of the concrete.

In the eleventh aspect, it is possible to prevent the measurement unit from falling off from the support while making the measurement unit detachable from the support.

Sectional drawing which showed the jig for top floors. The perspective view which showed the jig for top floors. The enlarged perspective view which showed the state which decomposed|disassembled the jig for top floors. The enlarged perspective view which showed the state which assembled|attached the jig for top floors. The top view which showed the unit holding|maintenance part of the state which accommodated the measurement unit. FIG. 4 is a plan view showing the unit holding portion in a state where the measurement unit is not accommodated; Sectional drawing which showed the jig for intermediate floors which concerns on 1st embodiment. The perspective view which showed the jig for intermediate floors. The enlarged perspective view which showed the jig for intermediate floors. The perspective view which showed the jig for intermediate floors which concerns on 2nd embodiment. The perspective view which showed the arm part of the jig for intermediate floors. The top view which showed the jig for intermediate floors. (a) The side view which showed the measurement unit. (b) An enlarged plan view showing a guide portion, an inner rail portion, and a rotation shaft. The perspective view which showed the jig|tool for intermediate floors of the state before attaching a measuring unit. (a) Sectional drawing which showed the rotation support part of the jig for intermediate floors. (b) Sectional drawing which showed the rotation support part of the jig for intermediate floors which concerns on a 1st modification. The perspective view which showed the jig for intermediate floors which concerns on a 2nd modification.

Hereinafter, the front-rear direction, the left-right direction, and the up-down direction will be defined and explained based on the arrows in the drawings.

A jig 10 according to one embodiment of the present invention supports the measuring unit 1 . The measuring unit 1 measures the press-in speed of concrete 8 press-fitted into steel pipes 7 constituting columns of a building having a CFT structure (concrete-filled steel pipe structure).

1 and 2, the configuration of a column of a CFT structure building (hereinafter referred to as a "filled steel pipe concrete column 6") will be described.

The filled steel pipe concrete column 6 is formed by filling the internal space of the steel pipe 7 with concrete 8, as shown in FIG. The steel pipe 7 is a rectangular tubular member made of steel (iron). The steel pipe 7 is formed over each floor of the building. The steel pipe 7 has an insertion hole 7a and a diaphragm 7b.

The insertion hole 7a is a hole formed so as to pass through the side surface of the steel pipe 7 in the front-rear direction. Concrete 8 is press-fitted into the internal space of the steel pipe 7 via the insertion hole 7a. The insertion hole 7a is provided at a position corresponding to at least the ground floor Fa of the building. Also, the insertion hole 7a is provided at a position corresponding to a predetermined intermediate floor Fn as required (see FIG. 7).

Further, the side surface of the steel pipe 7 is provided with a predetermined steam release hole (not shown) for releasing steam from the internal space of the steel pipe 7 . A plurality of steam vent holes (for example, each floor) are provided at predetermined intervals along the vertical direction.

The diaphragm 7b is a horizontal stiffener that transfers the stress of the beam (not shown) to the filled steel pipe concrete column 6. A diaphragm 7 b is provided in the internal space of the steel pipe 7 . A plurality of diaphragms 7b are provided at predetermined intervals along the vertical direction of the steel pipe 7 so as to correspond to the positions where the beams of each floor of the building are provided. The diaphragm 7b has a plate shape arranged with its thickness direction directed vertically. The diaphragm 7b has a rectangular shape in plan view. The diaphragm 7b has a placement hole 7c and an air hole 7d.

The placement hole 7 c shown in FIG. 2 is a hole provided so that the concrete 8 can pass through the internal space of the steel pipe 7 . The driving hole 7c is provided so as to penetrate the diaphragm 7b in the thickness direction. The driving hole 7c is provided in the central portion of the diaphragm 7b in plan view. The inner diameter of the placement hole 7c is appropriately set from the viewpoint of strength and suitable filling of the concrete 8 .

7 d of air holes are holes for extracting air from the internal space of the steel pipe 7 . 7 d of air holes are provided so that the thickness direction of the diaphragm 7b may be penetrated. 7 d of air holes are provided in the four corners in planar view of the diaphragm 7b. The inner diameter of the air hole 7d is formed to be smaller than the inner diameter of the driving hole 7c.

Next, a method for constructing the filled steel pipe concrete column 6 will be described with reference to FIG.

First, the concrete 8 from the pump truck brought to the ground floor Fa of the building is press-fitted into the internal space of the steel pipe 7 through the insertion hole 7a provided on the ground floor Fa of the steel pipe 7 . As a result, the internal space of the steel pipe 7 is filled with the concrete 8 so as to push up the top end 8a of the concrete 8 from below.

The concrete 8 press-fitted into the internal space of the steel pipe 7 is press-fitted to the upper story side through the placement hole 7c of the diaphragm 7b. When the concrete 8 is filled up to the upper end of the steel pipe 7, the press-fitting of the concrete 8 is stopped. By solidifying the concrete 8 filled in this manner, the filled steel pipe concrete column 6 is formed. In the above example, the concrete 8 is press-fitted on the ground floor Fa. is also possible.

Next, the measurement unit 1 will be described with reference to FIGS. 1 to 5. FIG.

The measurement unit 1 is capable of acquiring information on the concrete 8 pressed into the internal space of the steel pipe 7 . The measurement unit 1 includes an illumination section 2, a camera section 3, a laser rangefinder 4, and a case section 5.

The illumination unit 2 shown in FIG. 5 illuminates the internal space of the steel pipe 7 . The lighting section 2 has a predetermined light emitting section such as a light emitting diode.

The camera section 3 images the internal space of the steel pipe 7 . The camera section 3 has a predetermined lens section (not shown).

The laser range finder 4 can measure the distance from above the concrete 8 press-fitted into the internal space of the steel pipe 7 to the top end 8 a of the concrete 8 . The laser rangefinder 4 has a predetermined laser beam irradiation section (not shown). As shown in FIG. 1, the laser range finder 4 is directed to the top edge 8a of the concrete 8 located below and irradiates a laser beam. By measuring the time, the distance to the top 8a of the concrete 8 is measured.

The case portion 5 accommodates the illumination portion 2, the camera portion 3, and the laser rangefinder 4. As shown in FIG. The case portion 5 has a substantially cylindrical shape with both ends closed. The case portion 5 is formed so that the light emitting portion of the illumination portion 2, the lens portion of the camera portion 3, and the laser beam irradiation portion of the laser rangefinder 4 are exposed on the bottom surface. In the present embodiment, the laser beam irradiation section is positioned at the center of the lower surface of the case section 5 as viewed from the bottom.

A cable 5a used for power supply and information output is connected to the illumination unit 2, the camera unit 3, and the laser rangefinder 4 described above. The cable 5a is wired from the upper surface of the case portion 5 to the outside. Image information captured by the camera section 3 and measurement results obtained by the laser rangefinder 4 are output via the cable 5a.

Image information from the camera unit 3 and measurement results from the laser rangefinder 4 are output to the control unit 290 shown in FIG. The control unit 290 includes an arithmetic device such as a CPU (Central Processing Unit), a storage device such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and the like. The control unit 290 can calculate the press-in speed of the concrete 8 in the internal space of the steel pipe 7 using the measurement results obtained by the laser rangefinder 4 .

The pressing speed of the concrete 8 and the image information of the camera unit 3 are displayed via a predetermined monitor. As a result, the worker who presses the concrete 8 can control the pressing of the concrete 8 while checking the speed of the concrete 8 and the state of the internal space of the steel pipe 7 .

Next, a jig 10 according to one embodiment of the present invention will be described.

The jig 10 supports the measuring unit 1 above the top end 8 a of the concrete 8 press-fitted into the internal space of the steel pipe 7 . The jig 10 includes a top floor jig 100 and an intermediate floor jig 200 .

First, the top floor jig 100 will be described below with reference to FIGS. 1 to 5 .

The top floor jig 100 supports the measurement unit 1 above the upper end of the steel pipe 7 . As shown in FIGS. 1 and 2, the top floor jig 100 is installed on the top floor Fr (rooftop floor) of the building where the upper ends of the steel pipes 7 are located. Specifically, the top floor jig 100 is placed on the upper surface 9a of the iron plate 9 laid on the floor surface of the top floor Fr before the concrete 8 of the roof slab is placed. The top floor jig 100 includes a support portion 110 , a unit holding portion 140 and a positioning portion 180 .

The support part 110 is installed with respect to the iron plate 9 . The support portion 110 includes a leg portion 120 and a mounting portion 130 .

The leg portion 120 is grounded on the upper surface 9 a of the iron plate 9 . In this embodiment, three legs 120 are provided. That is, in the present embodiment, the support portion 110 constitutes a tripod grounded on the upper surface 9a of the iron plate 9 at three points by the three legs 120. As shown in FIG. The leg portion 120 has an elongated shape and is arranged with its longitudinal direction directed obliquely upward. The leg portion 120 is extendable along the longitudinal direction. Leg 120 comprises outer leg 121 and inner leg 122 .

The outer leg portion 121 has an elongated shape. The outer leg portion 121 has an internal space capable of accommodating an elongated member (an inner leg portion 122 to be described later).

The inner leg portion 122 has an elongated shape corresponding to the internal space of the outer leg portion 121 . The inner leg portion 122 is accommodated in the inner space of the outer leg portion 121 so as to be movable in the longitudinal direction. Movement of the inner leg 122 relative to the outer leg 121 causes the leg 120 to expand and contract. By extending and contracting as described above, the leg portion 120 can be adjusted to an arbitrary length. Further, the leg portion 120 can be held at an arbitrary length by the expansion and contraction. The inner leg 122 is provided with movement restraint means 123 .

The movement suppressing means 123 suppresses the movement of the support portion 110 with respect to the iron plate 9 . The movement suppressing means 123 is provided at the lower end portion (oblique lower end portion) of the inner leg portion 122 . The movement suppressing means 123 is provided such that its lower surface is in contact with the upper surface 9 a of the iron plate 9 . The movement suppressing means 123 includes a case portion 124 , a magnet portion 125 and a switching portion 126 .

The case portion 124 constitutes an outer shell of the movement suppressing means 123 . The illustrated example shows an example in which the case portion 124 has a substantially rectangular parallelepiped shape.

The magnet part 125 is capable of generating magnetic force. The magnet portion 125 is housed in the internal space of the case portion 124 . The magnet portion 125 can generate magnetic force on the lower surface of the case portion 124 . The magnet part 125 can switch between generation and non-generation of magnetic force.

The switching unit 126 switches between generation and non-generation of magnetic force in the magnet unit 125 . The switching portion 126 protrudes from the side surface of the case portion 124 and can be rotated. The switching portion 126 switches between a state in which the magnetic force is generated by the magnet portion 125 (magnetic force generation state) and a state in which the magnetic force is not generated (non-generation state).

The mounting portion 130 is connected to the upper end portion (oblique upper end portion) of the outer leg portion 121 . The mounting portion 130 has a plate shape arranged with the thickness direction generally directed in the vertical direction. A unit holding portion 140 to be described later is placed on the upper surface 131 of the placing portion 130 .

The mounting portion 130 has a substantially equilateral triangular shape in plan view. The mounting portion 130 has three legs 120 (outer legs 121) connected to its three sides in plan view. Specifically, the mounting portion 130 has three rotation shafts whose axial directions are oriented in the directions in which the three sides extend, and the leg portions 120 are rotatably connected to the rotation shafts. be. Further, the mounting portion 130 has an opening portion 132 .

The opening 132 is a hole penetrating through the mounting portion 130 in the thickness direction. The opening 132 is provided in the central portion of the mounting portion 130 in plan view. The opening 132 has a circular shape in plan view.

The support part 110 described above can adjust the angle of the mounting part 130 with respect to the upper surface of the iron plate 9 by appropriately extending and contracting the three leg parts 120 while being installed on the iron plate 9 .

With the support portion 110 installed on the iron plate 9 , the movement suppressing means 123 is fixed to the iron plate 9 by operating the switching portion 126 to bring the movement suppressing means 123 into a magnetic force generating state. Thereby, the movement of the support portion 110 with respect to the iron plate 9 is suppressed. In addition, the support portion 110 can release the fixation of the movement suppressing means 123 to the iron plate 9 by setting the movement suppressing means 123 to the non-generated state by operating the switching portion 126 . This allows the support portion 110 to move relative to the iron plate 9 .

The unit holding section 140 holds the measurement unit 1 . The unit holding portion 140 is supported by the support portion 110 above the steel pipe 7 . The unit holding section 140 includes a housing section 150 , angle adjustment means 160 and internal position adjustment means 170 .

The accommodation section 150 accommodates the measurement unit 1 . The housing portion 150 has a bottomed cylindrical shape with an open top. The housing portion 150 includes a bottom portion 151 , side portions 154 and flange portions 156 .

A bottom portion 151 shown in FIGS. 3, 5 and 6 constitutes the bottom surface of the housing portion 150 . As shown in FIG. 5 , when the measurement unit 1 is housed in the housing portion 150 , the bottom surface of the measurement unit 1 contacts the top surface (bottom surface) of the bottom portion 151 . The bottom 151 has a protrusion 152 and an opening 153 .

The protrusion 152 protrudes downward. The projecting portion 152 has a shape whose diameter is smaller than that of a side portion 154, which will be described later. The protrusion 152 has a cylindrical shape. The projecting portion 152 is provided at the central portion of the bottom portion 151 in bottom view. The protrusion 152 is inserted through the opening 132 of the mounting portion 130 . The outer diameter dimension of the protruding portion 152 is a dimension that roughly corresponds to the inner diameter dimension of the opening portion 132 of the mounting portion 130 .

The opening 153 is a hole that vertically opens the bottom 151 . The opening 153 is provided in the central portion of the bottom 151 so as to overlap with the opening 132 of the mounting portion 130 in plan view. As shown in FIG. 5, the opening 153 overlaps the illumination section 2, the camera section 3, and the laser rangefinder 4 of the measurement unit 1 in plan view when the measurement unit 1 is accommodated in the accommodation section 150. be provided. In addition, the opening 153 overlaps with the light emitting portion of the illumination portion 2, the lens portion of the camera portion 3, and the laser beam irradiation portion of the laser rangefinder 4 in plan view (bottom view). As a result, with the measurement unit 1 housed in the housing section 150, the light emitting section of the illumination section 2, the lens section of the camera section 3, and the laser beam irradiation section of the laser rangefinder 4 are downwardly positioned via the opening 153. can be exposed.

The side portion 154 constitutes the outer side surface and the inner side surface of the housing portion 150 . The inner diameter dimension of the side portion 154 is formed larger than the outer diameter dimension of the measurement unit 1 (case portion 5). Thereby, a gap is formed between the inner surface of the side portion 154 and the outer surface of the measuring unit 1 when the measuring unit 1 is accommodated in the accommodating portion 150 . Side 154 includes a threaded hole 155 .

The screw hole 155 is a hole penetrating through the side portion 154 in the thickness direction (inward and outward directions). Threaded hole 155 constitutes an internal thread. A threaded hole 155 is formed in the upper portion of the side portion 154 . Three screw holes 155 are formed in the side portion 154 . The three screw holes 155 are arranged at equal intervals in the circumferential direction on the side portion 154 .

The flange portion 156 is a portion formed at the lower end portion of the side portion 154 so as to expand radially outward. The flange portion 156 has a plate shape that is annular in plan view. A lower surface 157 of the flange portion 156 faces the upper surface 131 of the mounting portion 130 . The flange portion 156 has a threaded hole 158 and a spirit level 159 .

The threaded hole 158 is a hole penetrating through the flange portion 156 in the vertical direction. Threaded hole 158 constitutes an internal thread. Threaded holes 158 are formed at three locations in the flange portion 156 . The three screw holes 158 are arranged at equal intervals in the circumferential direction in the flange portion 156 .

The spirit level 159 is for checking the inclination (horizontal state) of the flange portion 156 . A spirit level 159 is provided on the upper surface of the flange portion 156 . The spirit level 159 has a circular shape in plan view. This embodiment shows an example in which the level 159 is a bubble tube level in which liquid and air bubbles are sealed inside a container. The spirit level 159 is not limited to such a mode, and various types such as a digital type and a laser type can be adopted.

The angle adjustment means 160 shown in FIGS. 3 to 5 is capable of adjusting the angle of the accommodation portion 150 (unit holding portion 140) with respect to the support portion 110. FIG. The angle adjustment means 160 are provided at positions corresponding to the screw holes 158 of the flange portion 156 . The angle adjusting means 160 has a threaded portion 161 and an operating portion 162 .

The threaded portion 161 is inserted through the threaded hole 158 of the flange portion 156 . The threaded portion 161 constitutes a male thread that is screwed into the threaded hole 158 . The threaded portion 161 is elongated in the vertical direction. A lower end portion of the threaded portion 161 can contact the upper surface 131 of the mounting portion 130 .

The operation part 162 enables the operation of the screw part 161 . The operating portion 162 is provided at the upper end portion of the threaded portion 161 . The operating portion 162 has a shape with a larger diameter than the threaded portion 161 . The operating portion 162 is positioned above the upper surface of the flange portion 156 . By rotating the operating portion 162 about the axial direction of the threaded portion 161 , the lower end portion of the threaded portion 161 can be moved back and forth with respect to the lower surface 157 of the flange portion 156 .

By appropriately operating the three angle adjusting means 160 as described above, the distance between the upper surface 131 of the mounting portion 130 and the lower surface 157 of the flange portion 156 can be adjusted at three points. Accordingly, by adjusting the angle of the housing portion 150 with respect to the support portion 110 , the measurement unit 1 can be preferably directed toward the top end 8 a of the concrete 8 in the internal space of the steel pipe 7 .

The internal position adjusting means 170 can adjust the position of the measurement unit 1 with respect to the housing portion 150 . The internal position adjusting means 170 are provided at positions corresponding to the screw holes 155 of the side portion 154 . The internal position adjusting means 170 comprises a threaded portion 171 and an operating portion 172 .

The threaded portion 171 is inserted through the threaded hole 155 of the side portion 154 . The threaded portion 171 constitutes a male thread that is screwed into the threaded hole 155 . The threaded portion 171 is elongated in the radial direction (inward-outward direction) of the side portion 154 . The inner end of the threaded portion 171 can abut against the outer surface of the measurement unit 1 (case portion 5).

The operating portion 172 enables the screw portion 171 to be operated. The operating portion 172 is provided at the upper end portion of the threaded portion 171 . The operating portion 172 has a shape with a larger diameter than the threaded portion 171 . The operating portion 172 is located outside the outer surface of the side portion 154 . By rotating the operating portion 172 about the axial direction of the threaded portion 171 , the inner end portion of the threaded portion 171 can be advanced or retracted with respect to the inner surface of the side portion 154 .

By appropriately operating the three internal position adjusting means 170 as described above, the distance between the inner surface of the housing portion 150 and the outer surface of the measurement unit 1 can be adjusted at three points. Accordingly, by adjusting the position of the measurement unit 1 with respect to the housing portion 150 , the measurement unit 1 can be preferably oriented toward the top end 8 a of the concrete 8 in the internal space of the steel pipe 7 .

The positioning portion 180 shown in FIG. 2 can position the support portion 110 with respect to the steel pipe 7 . The positioning portion 180 is provided on the upper surface 9 a of the iron plate 9 . A positioning portion 180 indicates a position where the movement suppressing means 123 is grounded. The positioning portion 180 is positioned such that the mounting portion 130 of the support portion 110 is positioned approximately in the central portion of the internal space of the steel pipe 7 in a plan view with the movement suppressing means 123 grounded at the position indicated by the positioning portion 180 . provided in The positioning part 180 may constitute a marking provided directly on the iron plate 9 or may be a plate-like (mat-like) member laid on the iron plate 9 .

The top floor jig 100 formed as described above is installed, for example, on the top floor Fr as follows.

First, the movement suppressing means 123 (case portion 124 ) of the support portion 110 is grounded at the position indicated by the positioning portion 180 on the upper surface 9 a of the iron plate 9 . This enables positioning of the support portion 110 with respect to the steel pipe 7 .

Next, the movement suppressing means 123 is fixed to the iron plate 9 by operating the switching portion 126 to bring the movement suppressing means 123 into the magnetic force generating state. Next, by appropriately extending and contracting the three legs 120 of the supporting portion 110, the angle of the mounting portion 130 with respect to the upper surface of the iron plate 9 is adjusted so as to approach a horizontal state.

Next, the unit holding portion 140 is placed on the placing portion 130 of the support portion 110 . In this state, the projecting portion 152 of the unit holding portion 140 is inserted through the opening portion 132 of the mounting portion 130 . Next, by appropriately operating the three angle adjustment means 160 provided on the flange portion 156 of the unit holding portion 140, the angle of the housing portion 150 with respect to the support portion 110 is adjusted so that the unit holding portion 140 is in a horizontal state. adjust.

Next, the measurement unit 1 is accommodated in the accommodation portion 150 of the unit holding portion 140 . In this state, the measurement unit 1 is held by the unit holding section 140 so as to be in a horizontal state. Next, the three internal position adjusting means 170 provided on the side portion 154 of the unit holding portion 140 are appropriately operated. As a result, it is possible to finely adjust the position of the measurement unit 1 so that it can be appropriately oriented with respect to the top end 8 a of the concrete 8 in the internal space of the steel pipe 7 . The installation procedure described above is an example, and the installation procedure of the top floor jig 100 is not limited to the above example.

An intermediate floor jig 200 according to the first embodiment of the present invention will be described below with reference to FIGS. 7 to 9. FIG.

The intermediate floor jig 200 supports the measuring unit 1 on the intermediate floor Fn of the building. As shown in FIGS. 7 and 8 , the intermediate floor jig 200 is installed in the middle of the steel pipe 7 in the vertical direction. The intermediate floor jig 200 includes a support portion 210 , an arm portion 240 , a fixing means 250 and a bracket 280 .

The support portion 210 is inserted through the insertion hole 7a of the steel pipe 7 on the middle floor Fn of the building. The support portion 210 supports the measurement unit 1 so that the measurement unit 1 faces downward inside the steel pipe 7 . The support portion 210 is elongated in the front-rear direction (the front-rear dimension is longer than the left-right dimension). The support portion 210 includes an outer rail portion 220 and an inner rail portion 230 .

The outer rail portion 220 constitutes the outer portion of the support portion 210 . The outer rail portion 220 is elongated in the front-rear direction. The outer rail portion 220 has a substantially rectangular outer shape in a cross-sectional view. Further, the outer rail portion 220 has a substantially rectangular shape in a cross-sectional view, and has an internal space capable of accommodating an inner rail portion 230, which will be described later.

The inner rail portion 230 constitutes the inner portion of the support portion 210 . The inner rail portion 230 is elongated in the front-rear direction. The inner rail portion 230 has a substantially rectangular outer shape in a cross-sectional view. The inner rail portion 230 is accommodated in the inner space of the outer rail portion 220 so as to be movable in the longitudinal direction. That is, the inner rail portion 230 and the outer rail portion 220 are movable relative to each other. The inner rail portion 230 has a wiring space 231 .

The wiring space 231 is a space formed inside the inner rail portion 230 to allow wiring. The wiring space 231 is formed to penetrate the inner rail portion 230 in the longitudinal direction. In this embodiment, a plurality of wiring spaces 231 are formed at predetermined positions of the inner rail portion 230 .

The arm portion 240 is provided so as to extend in the left-right direction with respect to the outer rail portion 220 . Arm portion 240 is provided at the rear end portion of outer rail portion 220 . The arm portion 240 is provided so that both side portions in the left-right direction are positioned on both sides in the left-right direction of the insertion hole 7a. The arm portion 240 comprises a first piece portion 241 and a second piece portion 242 .

The first piece 241 has a plate shape with the thickness direction directed vertically. The upper surface of the first piece portion 241 is fixed to the lower surface of the rear end portion of the outer rail portion 220 . Holes 241a are formed vertically through both sides of the first piece 241 in the left-right direction.

The second piece portion 242 has a plate shape with the thickness direction oriented in the front-rear direction. The second piece 242 is provided to extend downward from the front end of the first piece 241 . That is, the arm portion 240 is substantially L-shaped in a cross-sectional view.

The fixing means 250 detachably fixes the front side and the rear side of the support portion 210 to the steel pipe 7 . Securing means 250 comprises front securing means 260 and rear securing means 270 .

The front fixing means 260 fixes the front portion of the outer rail portion 220 to the rearward inner surface (backward inner surface) of the steel pipe 7 . As shown in FIG. 8, the front-side fixing means 260 is fixed to a portion of the inner surface facing the rear of the steel pipe 7 that overlaps the insertion hole 7a in a front view. The front fixing means 260 is provided at the front end of the outer rail portion 220 . The front-side fixing means 260 is provided so as to be rotatable about a rotation axis along the front-rear direction with respect to the outer rail portion 220 . The front fixing means 260 includes a case portion 261 , a magnet portion 262 and a switching portion 263 .

The case portion 261 constitutes the outer shell of the front fixing means 260 . The illustrated example shows an example in which the case portion 261 has a substantially rectangular parallelepiped shape.

The magnet part 262 is capable of generating magnetic force. The magnet portion 262 is housed in the internal space of the case portion 261 . The magnet portion 262 can generate a magnetic force on the front surface of the case portion 261 (the surface facing the inner surface facing the rear of the steel pipe 7). The magnet part 262 can switch between generation and non-generation of magnetic force.

The switching section 263 switches between generation and non-generation of magnetic force in the magnet section 262 . The switching portion 263 protrudes from the rear surface of the case portion 261 and can be rotated. The switching portion 263 switches between a state in which magnetic force is generated by the magnet portion 262 (magnetic force generation state) and a state in which magnetic force is not generated (non-generation state) in accordance with the rotation operation.

The rear side fixing means 270 fixes the rear side portion of the outer rail portion 220 to the outer side surface of the steel pipe 7 facing the rear side (outer side surface on the front side). The rear fixing means 270 are provided on both sides of the arm portion 240 in the left-right direction. The rear side fixing means 270 is fixed to the upper surface of the first piece portion 241 of the arm portion 240 . The rear fixing means 270 includes a case portion 271 , a magnet portion 272 , a switching portion 273 and a vertical position adjusting means 346 .

The case portion 271 constitutes the outer shell of the rear fixing means 270 . The illustrated example shows an example in which the case portion 271 has a substantially rectangular parallelepiped shape. A bottom hole portion 271a is formed through the bottom surface of the case portion 271 in the vertical direction. The lower surface hole portion 271a constitutes an internal thread.

The magnet part 272 is capable of generating magnetic force. The magnet portion 272 is housed in the internal space of the case portion 271 . The magnet portion 272 can generate a magnetic force on the front surface of the case portion 271 (the surface facing the rearward outer surface of the steel pipe 7). The magnet part 272 can switch between generation and non-generation of magnetic force.

The switching section 273 switches between generation and non-generation of magnetic force in the magnet section 272 . The switching portion 273 protrudes from the rear surface of the case portion 271 and can be rotated. The switching portion 273 switches between a state in which a magnetic force is generated by the magnet portion 272 (magnetic force generation state) and a state in which the magnetic force is not generated (non-generation state) in accordance with the rotation operation.

The vertical position adjusting means 274 is capable of adjusting the vertical position of both lateral side portions of the arm portion 240 with respect to the fixed position of the case portion 271 with respect to the steel pipe 7 . The vertical position adjusting means 274 has a screw portion 275 and an operating portion 276 .

The screw portion 275 is inserted through the lower surface hole portion 271 a of the case portion 271 and the hole portion 241 a of the first piece portion 241 . The threaded portion 275 is elongated in the vertical direction. The threaded portion 275 is provided such that its upper end portion is located in the internal space of the case portion 271 . The threaded portion 275 is screwed into the hole portion 241 a of the case portion 271 . Further, the screw portion 275 is fixed to the first piece portion 241 so as to be rotatable about the axial direction and immovable in the axial direction while being inserted through the hole portion 241a of the first piece portion 241. be done. As a result, the case portion 271 (rear side fixing means 270 ) and the first piece portion 241 (arm portion 240 ) are fixed via the screw portion 275 .

The operating portion 276 enables the screw portion 275 to be operated. The operating portion 276 is provided at the lower end portion of the threaded portion 275 . The operating portion 276 has a shape with a larger diameter than the threaded portion 275 . The operating portion 276 is positioned below the lower surface of the first piece portion 241 .

By rotating the operation portion 276 about the axial direction of the threaded portion 275 , the case portion 271 screwed to the threaded portion 275 and the threaded portion 275 move along with the rotation of the threaded portion 275 . The distance between the rotatably fixed arm portion 240 and , can be adjusted. Thereby, the vertical position of the arm portion 240 with respect to the rear fixing means 270 can be adjusted.

The object to which the threaded portion 275 is screwed is not limited to the case portion 271, and various portions of the rear fixing means 270 can be employed. Further, the threaded portion 275 is not limited to being screwed to the rear side fixing means 270, and for example, the threaded portion 275 may be screwed to the first piece portion 241 (arm portion 240). . In this case, the screw portion 275 is fixed to the rear fixing means 270 so as to be rotatable and immovable in the axial direction.

The angles of the arm portion 240 and the support portion 210 can be adjusted by appropriately operating the two vertical position adjusting means 274 as described above. In addition, in the illustrated example, predetermined movement restricting portions 241b having elongated holes in the vertical direction are provided on both sides of the arm portion 240 in the left and right direction, and predetermined movement restricting portions 241b that are inserted into the elongated holes are provided on the side surfaces of the case portion 271. shows an example in which a protrusion 271b is provided. As a result, the vertical position of the case portion 271 can be adjusted within the range of the long hole.

The bracket 280 fixes the measurement unit 1 to the inner rail portion 230 . The bracket 280 has a substantially rectangular shape when viewed from the front. The bracket 280 has an upper piece portion 281 , a lower piece portion 282 and a side piece portion 283 .

The upper piece 281 has a plate shape with the thickness direction directed vertically. The lower surface of the upper piece portion 281 is fixed to the upper surface of the tip portion of the inner rail portion 230 via a predetermined stopper.

The lower piece portion 282 has a plate shape with the thickness direction directed vertically. The lower surface of the lower piece portion 282 is fixed to the upper surface of the measurement unit 1 (case portion 5) via a predetermined fastener.

The side piece portion 283 has a plate shape with the thickness direction oriented in the left-right direction. The side piece portion 283 connects the left and right ends of the upper piece portion 281 and the lower piece portion 282, respectively.

By fixing the measurement unit 1 to the inner rail portion 230 via the bracket 280 as described above, even if the stopper that fixes the upper piece portion 281 and the inner rail portion 230 comes off, the bracket Since the upper piece portion 281 of the measuring unit 280 is placed on the inner rail portion 230, it is possible to prevent the measurement unit 1 from falling.

Further, the measurement unit 1 fixed to the front end portion of the inner rail portion 230 as described above can be wired so that the cable 5 a is inserted through the wiring space 231 of the inner rail portion 230 .

The intermediate floor jig 200 formed as described above is installed, for example, on the intermediate floor Fn as follows.

First, on the intermediate floor Fn, the supporting portion 210 of the intermediate floor jig 200 is inserted through the insertion hole 7a of the steel pipe 7 while the measurement unit 1 is fixed. Here, the vertical dimension of the measurement unit 1 is larger than the inner diameter dimension of the insertion hole 7a. Therefore, when inserting the support portion 210 and the measurement unit 1 into the insertion hole 7a, the measurement unit 1 is appropriately inclined to the extent that it can be inserted into the insertion hole 7a.

Next, with the measuring unit 1 and the front part of the support part 210 positioned in the inner space of the steel pipe 7 , the intermediate floor jig 200 is moved forward, and the front fixing means 260 is moved to the inner surface of the steel pipe 7 facing the rear. , and the rear-side fixing means 270 is brought into contact with the outer surface of the steel pipe 7 facing the rear. At this time, the angles are appropriately adjusted so that the measurement unit 1 and the intermediate floor jig 200 are in a substantially horizontal state.

Next, by operating the switching portion 263 of the front side fixing means 260 and the switching portion 273 of the rear side fixing means 270, the front side fixing means 260 and the rear side fixing means 270 are brought into the state of generating magnetic force, whereby the intermediate floor jig is 200 is fixed to the steel pipe 7 at three points. In addition, when operating the switching portion 263 of the front fixing means 260, it is conceivable to use a predetermined operating tool (jig) elongated in the front-rear direction.

Next, by moving the inner rail portion 230 with respect to the outer rail portion 220, the longitudinal position of the measurement unit 1 is adjusted so that it is positioned at the central portion of the inner space of the steel pipe 7 in plan view. At this time, the amount of movement of the inner rail portion 230 relative to the outer rail portion 220 when the measurement unit 1 is positioned in the central portion of the internal space of the steel pipe 7 is indicated on either the outer rail portion 220 or the inner rail portion 230. It is also conceivable to provide a mark that serves as a guideline.

Next, the vertical position adjusting means 274 of the left and right rear side fixing means 270 are appropriately operated to adjust the angle of the measurement unit 1 about the rotation axis extending in the front-rear direction. As a result, it is possible to finely adjust the measurement unit 1 so as to be oriented in a direction that can be suitably oriented with respect to the top end 8 a of the concrete 8 in the internal space of the steel pipe 7 . Note that the installation procedure described above is an example, and the installation procedure of the jig 200 for intermediate floors is not limited to the above-described example.

As described above, the intermediate floor jig 200 (jig) according to the first embodiment of the present invention is
An intermediate floor jig 200 that supports a measuring unit 1 having a laser range finder 4 that measures the distance from above concrete 8 press-fitted into a steel pipe 7 for CFT structure to the top end 8a of the concrete 8, ,
a long support portion 210 that is inserted through an insertion hole 7a provided in the side surface of the steel pipe 7 and supports the measurement unit 1 so that the measurement unit 1 faces downward inside the steel pipe 7;
fixing means 250 (front side fixing means 260 and rear side fixing means 270) for detachably fixing the front side (one side in the longitudinal direction) and the rear side (the other side) of the support portion 210 to the steel pipe 7;
is provided.

With such a configuration, the measurement unit 1 oriented toward the top end 8a of the concrete 8 can be supported so as to be restrained from being shifted in the oriented direction. That is, by fixing both longitudinal sides of the support portion 210 to the steel pipe 7, the measurement unit 1 can be stably supported on the middle floor Fn. As a result, the distance from the measurement unit 1 to the top end 8a of the concrete 8 can be accurately measured, and the pressing speed of the concrete 8 in the steel pipe 7 can be accurately measured using the distance.

Further, the fixing means 250 (the front side fixing means 260 and the rear side fixing means 270) has a magnet portion 262 and a magnet portion 272 capable of switching between generation and non-generation of magnetic force.

With such a configuration, the fixing means 250 (the front side fixing means 260 and the rear side fixing means 270) can be easily attached to and detached from the steel pipe 7 by generating and not generating magnetic force.

Further, an arm portion 240 is provided on the support portion 210 and extends on both sides in a direction perpendicular to the longitudinal direction of the support portion 210,
The fixing means 250 is
a front-side fixing means 260 (first fixing means) provided on the front side (one side in the longitudinal direction) of the support portion 210 and capable of being fixed to the inner surface of the steel pipe 7;
At the rear side (the other side in the longitudinal direction) of the support portion 210, provided on both sides in the extending direction of the arm portion 240, and fixed to both side portions of the insertion hole 7a on the outer surface of the steel pipe 7. a rear fixing means 270 (second fixing means);
is provided.

With such a configuration, the measurement unit 1 can be supported more stably by fixing the support portion 210 to the steel pipe 7 at three points.

Further, the arm portion 240 is provided so as to extend to both left and right sides,
The rear fixing means 270 is
It can be fixed to the left and right side portions of the insertion hole 7a,
A vertical position adjusting means 274 is provided which can adjust the vertical position of the left and right side portions of the arm portion 240 with respect to the fixed position with respect to the steel pipe 7 .

With such a configuration, the measurement unit 1 can be supported more preferably. That is, the angle of the measurement unit 1 with respect to the steel pipe 7 can be adjusted by adjusting the left and right vertical position adjusting means 274 to rotate the support portion 210 . Thereby, the measurement unit 1 can be preferably oriented with respect to the top end 8 a of the concrete 8 inside the steel pipe 7 .

Further, the support part 210 is
an outer rail portion 220 (first rail portion);
an inner rail portion 230 (second rail portion) provided movably in the longitudinal direction of the support portion 210 with respect to the outer rail portion 220;
and
One of the outer rail portion 220 and the inner rail portion 230 is provided with the fixing means 250 (the front side fixing means 260 and the rear side fixing means 270), and the other side is provided with the measurement unit 1. be.

With such a configuration, the measurement unit 1 can be supported more preferably. That is, by moving one of the outer rail portion 220 and the inner rail portion 230 relative to the other, the position of the measurement unit 1 can be adjusted, and the measurement unit 1 can be moved to the concrete inside the steel pipe 7 . 8 can be suitably oriented with respect to the top end 8a.

A wiring space 231 is formed in at least one of the outer rail portion 220 and the inner rail portion 230, in which the cable 5a (wiring) connected to the measuring unit 1 is arranged. be.

With such a configuration, the wiring space 231 can be utilized to favorably arrange the cable 5a.

In addition, the intermediate floor jig 200 is
It further comprises a bracket 280 that is fixed to the measuring unit 1 and is fixed to the upper surface of either one of the outer rail portion 220 and the inner rail portion 230 .

Such a configuration can prevent the measuring unit 1 from falling. That is, with the above configuration, even if the fastener that fixes either one of the outer rail portion 220 and the inner rail portion 230 to the bracket 280 is removed, the outer rail portion 220 and the inner rail portion 220 can be removed. A bracket 280 can be placed on the upper surface of one of the rail portions 230 . This can prevent the measurement unit 1 from falling.

Note that the outer rail portion 220 according to this embodiment is an embodiment of the first rail portion according to the present invention.
Also, the inner rail portion 230 according to this embodiment is an embodiment of the second rail portion according to the present invention.
Further, the front fixing means 260 according to this embodiment is an embodiment of the first fixing means according to the present invention.
Further, the rear fixing means 270 according to this embodiment is an embodiment of the second fixing means according to the present invention.
Moreover, the cable 5a according to this embodiment is an embodiment of the wiring according to the present invention.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

For example, the uppermost floor jig 100 is not limited to the configuration of the embodiment described above. Specifically, the top floor jig 100 may be configured as follows.

In this embodiment, an example in which three leg portions 120 are provided in the support portion 110 is shown, but the present invention is not limited to such an aspect, and a configuration in which four or more leg portions 120 are provided may be employed.

Moreover, in the present embodiment, the movement suppressing means 123 includes the magnet portion 125, but the present invention is not limited to such an aspect. For example, the movement suppressing means 123 may include a member having a large coefficient of friction, such as rubber, to suppress the movement of the support portion 110 by friction.

Moreover, although the example which provided the movement suppression means 123 in the support part 110 was shown in this embodiment, it is not restricted to such an aspect. For example, a predetermined movement suppressing means 123 that suppresses the movement of the support portion 110 may be provided on the iron plate 9 side. Furthermore, a configuration in which the movement suppressing means 123 is not provided may be adopted.

Further, in this embodiment, an example in which the positioning portion 180 is provided is shown, but the present invention is not limited to such an aspect, and a configuration in which the positioning portion 180 is not provided may be employed.

In addition, in the present embodiment, the angle adjusting means 160 is configured to adjust the distance between the upper surface 131 of the mounting portion 130 and the lower surface 157 of the unit holding portion 140, but it is not limited to such an aspect. do not have. As the angle adjusting means 160, it is sufficient that the distance between the unit holding portion 140 and the supporting portion 110 can be adjusted at least three points in plan view.

Moreover, in the present embodiment, an example in which the angle adjustment means 160 is provided is shown, but the present invention is not limited to such an aspect, and a configuration in which the angle adjustment means 160 is not provided is also possible.

Further, in the present embodiment, the internal position adjusting means 170 is configured to adjust the distance between the inner surface of the housing portion 150 and the outer surface of the measurement unit 1, but the configuration is not limited to this. The internal position adjusting means 170 may be capable of adjusting the position of the measuring unit 1 with respect to the housing portion 150 at least three points.

Further, in the present embodiment, an example in which the internal position adjusting means 170 is provided has been shown, but the present invention is not limited to such an aspect, and a configuration in which the internal position adjusting means 170 is not provided may be employed.

Moreover, in the present embodiment, an example in which the jig 100 for the top floor is installed on the top floor Fr of the building is shown, but the configuration is not limited to this. That is, the top floor jig 100 is not limited to use on the top floor Fr, and can be installed on floors other than the top floor Fr (installation floor).

Further, the intermediate floor jig 200 is not limited to the configuration of the first embodiment described above. Specifically, the intermediate floor jig 200 may be configured as follows.

In the present embodiment, the front side fixing means 260 and the rear side fixing means 270 are assumed to include the magnet portion 262 and the magnet portion 272, but are not limited to such an aspect. For example, the front side fixing means 260 and the rear side fixing means 270 may be fixed to the steel pipe 7 using predetermined suction cups. can be adopted.

Moreover, in the present embodiment, an example in which the arm portion 240 is provided so as to extend in the left-right direction has been shown, but the present invention is not limited to such an aspect. For example, the arm portion 240 may be provided so as to extend in a direction orthogonal to the longitudinal direction (front-rear direction) of the support portion 210 and in a direction other than the left-right direction.

Also, in the present embodiment, an example in which the cable 5a of the measurement unit 1 is wired in the wiring space 231 inside the inner rail portion 230 is shown, but the present invention is not limited to such an aspect. For example, the cable 5 a may be routed outside the inner rail portion 230 .

Also, in this embodiment, an example in which the measurement unit 1 is provided with respect to the inner rail portion 230 via the bracket 280 is shown, but the present invention is not limited to such an aspect. For example, the measurement unit 1 may be provided on the inner rail portion 230 without providing the bracket 280 .

Further, in the present embodiment, an example in which the fixing means 250 is provided on the outer rail portion 220 of the support portion 210 and the measurement unit 1 is provided on the inner rail portion 230 is shown, but the present invention is not limited to such an aspect. do not have. For example, the fixing means 250 may be provided for the inner rail portion 230 and the measurement unit 1 may be provided for the outer rail portion 220 . In this case, the cable 5 a of the measurement unit 1 may be wired in the wiring space provided inside the outer rail portion 220 . Also, in this case, wiring spaces may be provided in both the outer rail portion 220 and the inner rail portion 230 .

Further, the intermediate floor jig is not limited to the configuration described above, and an intermediate floor jig 300 according to a second embodiment shown below may be used.

An intermediate floor jig 300 according to the second embodiment will be described below with reference to FIGS. 10 to 16 .

First, the measurement unit 1A supported by the jig 300 for intermediate floors will be described.

A measurement unit 1A shown in FIGS. 10 to 13 is capable of acquiring information on the concrete 8 pressed into the internal space of the steel pipe 7, like the measurement unit 1 according to the first embodiment. The measurement unit 1A includes an illumination section 2, a camera section 3, a laser rangefinder 4, a case section 5A, a rotating shaft 5b, and an auxiliary camera section 5e. Here, the illumination unit 2, the camera unit 3, and the laser rangefinder 4 are substantially the same as those of the measurement unit 1 according to the first embodiment, so description thereof will be omitted. As will be described later, the measurement unit 1A is rotatably supported by the jig 300 for intermediate floors. 10 to 13, the state in which the measurement unit 1A faces downward (the state in which the illumination unit 2, the camera unit 3, and the laser rangefinder 4 point downward) is used as a reference. , the configuration of the measurement unit 1A will be described.

The case portion 5A accommodates the illumination portion 2, the camera portion 3 and the laser rangefinder 4. As shown in FIG. The case portion 5A has a substantially square tubular shape. The case portion 5A has a substantially square shape when viewed from the bottom. The vertical dimension of the case portion 5A is larger than the inner diameter of the insertion hole 7a of the steel pipe 7. As shown in FIG.

The case portion 5A is formed so that the light emitting portion of the illumination portion 2, the lens portion of the camera portion 3, and the laser beam irradiation portion of the laser rangefinder 4 are exposed on the bottom surface (the surface facing downward). In the present embodiment, the bottom surface of the case portion 5A has a configuration in which the laser beam irradiation portion is positioned at the central portion when viewed from the bottom.

The rotary shaft 5b shown in FIGS. 12 and 13 is arranged with its axial direction directed in the left-right direction. The rotating shafts 5b are provided on both left and right side surfaces of the case portion 5A. As shown in FIG. 13(a), the rotating shaft 5b is provided at substantially the center in the vertical direction on both left and right side surfaces of the case portion 5A. Further, the rotating shafts 5b are provided on both left and right side surfaces of the case portion 5A so as to be positioned rearward of the approximate center in the front-rear direction. The rotating shaft 5b has a shaft body portion 5c and an enlarged diameter portion 5d.

The shaft body portion 5c is a portion that protrudes outward in the left-right direction from both left and right side surfaces of the case portion 5A. The shaft body portion 5c has a substantially cylindrical shape.

The enlarged diameter portion 5d is a portion provided at the leading end portion of the shaft body portion 5c in the projecting direction. The enlarged diameter portion 5d is formed to have an outer diameter larger than the outer diameter of the shaft body portion 5c. The expanded diameter portion 5d has a plate shape with the thickness direction directed in the left-right direction. The enlarged diameter portion 5d has a substantially hexagonal shape when viewed from the side.

The auxiliary camera section 5e shown in FIGS. 12 and 13(a) captures an image of the internal space of the steel pipe 7. As shown in FIG. The auxiliary camera unit 5e mainly captures an image for confirming the light from the laser rangefinder 4. FIG. This makes it possible to confirm the position of the light of the laser rangefinder 4 at the top 8a of the concrete 8. FIG. The auxiliary camera section 5e is provided on the front surface of the case section 5A. The auxiliary camera portion 5e is laid down along the front surface of the case portion 5A about a rotation shaft arranged with the axial direction directed in the left-right direction (a state of being laid down) and a state in which the front surface of the case portion 5A It can be displaced between a state in which it is erected by pressing it (upright state). The auxiliary camera section 5e is configured such that a predetermined lens section faces downward in the standing state.

A cable 5a used for power supply and information output is connected to the illumination unit 2, the camera unit 3, the laser rangefinder 4, and the auxiliary camera unit 5e, similarly to the measurement unit 1 according to the first embodiment.

In the measurement unit 1A described above, as shown in FIG. 13A, the center of gravity G is positioned closer to the bottom surface of the case portion 5A than the rotation shaft 5b. Further, the center of gravity G is positioned substantially at the center of the measurement unit 1A in plan view.

Next, the intermediate floor jig 300 will be described with reference to FIGS. 10 to 16. FIG.

The intermediate floor jig 300 supports the measurement unit 1A on the intermediate floor Fn of the building, substantially the same as the intermediate floor jig 200 according to the first embodiment. The intermediate floor jig 300 includes a support portion 310 , an arm portion 340 and a fixing means 350 .

The support portion 310 is inserted through the insertion hole 7a of the steel pipe 7 on the middle floor Fn of the building (see FIG. 11). The support portion 310 supports the measurement unit 1A so that the measurement unit 1A faces downward due to its own weight inside the steel pipe 7 . The support portion 310 is elongated in the front-rear direction (the front-rear dimension is longer than the left-right dimension). The support portion 310 includes an outer rail portion 320 and an inner rail portion 330 .

The outer rail portion 320 constitutes the outer portion of the support portion 310 . The outer rail portion 320 is elongated in the front-rear direction. The outer rail portion 320 has a square frame shape. The outer rail portion 320 includes a front frame portion 321 , a rear frame portion 322 , side frame portions 323 , reinforcing portions 324 and guide portions 325 .

The front frame portion 321 constitutes the front portion of the outer rail portion 320 . The front frame portion 321 has a substantially quadrangular prism shape.

The rear frame portion 322 constitutes the rear portion of the outer rail portion 320 . The rear frame portion 322 has a substantially quadrangular prism shape.

The side frame portions 323 constitute left and right side portions of the outer rail portion 320 . The side frame portion 323 has a substantially quadrangular prism shape.

A reinforcement portion 324 shown in FIGS. 10 and 12 reinforces the outer rail portion 320 . The reinforcing portions 324 are provided at the four corners inside the frame of the outer rail portion 320 respectively. The reinforcing portion 324 has a substantially triangular shape in plan view. The reinforcing portion 324 is fixed to the inner surfaces of two adjacent members among the front frame portion 321 , the rear frame portion 322 and the side frame portions 323 . The upper and lower surfaces of the reinforcing portion 324 are substantially flush with the upper and lower surfaces of the front frame portion 321 , the rear frame portion 322 and the side frame portions 323 . The reinforcing portion 324 has an origin display portion 324a.

The origin display portion 324a is a display provided on the upper surface of the reinforcement portion 324 (right reinforcement portion 324 in this embodiment) provided on the rear side among the four reinforcement portions 324 of the reinforcement portion 324 . The origin display portion 324a indicates the position in the front-rear direction of a scale portion 339a (position adjustment portion 339), which will be described later. The origin display part 324a can employ display by printing or appropriate stickers. It should be noted that the origin display portion 324a is not limited to the above configuration, and various configurations such as a concave portion and a protrusion formed on the upper surface of the reinforcing portion 324 can be employed.

The guide portion 325 shown in FIGS. 10 to 12 is a member elongated in the front-rear direction. The guide portions 325 are provided on the left and right inner surfaces of the left and right side frame portions 323 respectively. The guide portion 325 has a groove portion 326 .

The groove portion 326 is provided on the inner surface of the guide portion 325 in the left-right direction. The groove portion 326 is provided over substantially the entire front-rear direction of the guide portion 325 .

The inner rail portion 330 shown in FIGS. 12, 13(b) and 14 constitutes the inner portion of the support portion 310. As shown in FIG. The inner rail portion 330 is provided movably in the front-rear direction with respect to the outer rail portion 320 . The inner rail portion 330 includes a base portion 331 , a guided portion 334 , a rotation support portion 335 and a position adjustment portion 339 .

The base portion 331 constitutes a movable body for the outer rail portion 320 . The base portion 331 has a side piece portion 332 and a lower piece portion 333 .

A pair of side piece portions 332 are provided so as to face the left and right guide portions 325 respectively. The side piece portion 332 has a plate shape with the thickness direction oriented in the left-right direction. The side piece portion 332 has a substantially rectangular shape when viewed from the side.

The lower piece 333 connects the lower ends of the pair of side pieces 332 . The lower piece portion 333 has a plate shape with the thickness direction directed vertically. The lower piece portion 333 has a substantially rectangular shape in plan view. The lower piece portion 333 is provided from the rear end portions of the pair of side piece portions 332 to an intermediate portion in the front-rear direction. As a result, the base portion 331 has a substantially U-shape in plan view.

The guided portion 334 shown in FIGS. 12 and 13B is fitted into the groove portion 326 of the guide portion 325 . The guided portion 334 is movable in the front-rear direction along the groove portion 326 . The guided portions 334 are provided on the left and right outer surfaces of the left and right side pieces 332 of the base portion 331 .

The rotation support portion 335 shown in FIGS. 12, 13(b) to 15(a) rotatably supports the measurement unit 1A. The rotation support portions 335 are provided on the left and right inner surfaces of the left and right side pieces 332 of the base portion 331 respectively. The rotation support portion 335 is provided so as to be positioned forward of the lower piece portion 333 . The rotation support portion 335 includes a fixed piece portion 336 , a connection piece portion 337 and a support piece portion 338 .

The fixed piece portion 336 is a portion that is fixed to the inner surface in the left-right direction of the side piece portion 332 of the base portion 331 . The fixed piece portion 336 has a plate shape with the thickness direction directed in the left-right direction. The fixed piece portion 336 is fixed to the side piece portion 332 via a predetermined fastener.

The connection piece portion 337 is a portion that connects the fixed piece portion 336 and a support piece portion 338 to be described later. The connection piece portion 337 is provided so as to extend inward in the left-right direction from the front-rear center portion of the lower end portion of the fixed piece portion 336 . The connection piece portion 337 has a plate shape with the thickness direction directed vertically.

The support piece portion 338 is a portion that supports the rotation shaft 5b of the measurement unit 1A. The support piece portion 338 is provided so as to extend upward from the leading end portion of the connection piece portion 337 in the extending direction. As a result, the support piece portion 338 is spaced from the fixed piece portion 336 in the left-right direction via the connection piece portion 337 . The support piece portion 338 includes a receiving portion 338a and a restricting portion 338b.

The receiving portion 338a detachably and rotatably receives the rotating shaft 5b. The receiving portion 338a is recessed downward (opens upward) at the upper end portion of the support piece portion 338 so as to accommodate the shaft body portion 5c of the rotating shaft 5b. The receiving portion 338a has a curved bottom portion corresponding to the outer diameter of the shaft body portion 5c of the rotating shaft 5b.

The restricting portion 338b restricts the rotation shaft 5b from falling off from the receiving portion 338a. The restricting portion 338 b is provided at the upper end portion of the support piece portion 338 . The illustrated example shows an example in which the restricting portion 338b is provided at the upper end portion of the support piece portion 338 behind the receiving portion 338a. Moreover, in the example of drawing, the example which made the shape of the control part 338b substantially bar-shaped is shown. The restricting portion 338b can be displaced between an upright state in which the receiving portion 338a is opened upward, and a collapsed state in which the receiving portion 338a is laid down to cover the receiving portion 338a from above. By setting the restricting portion 338b to the collapsed state, upward movement of the shaft body portion 5c accommodated in the receiving portion 338a is restricted.

Various configurations can be adopted for the configuration for displacing the restricting portion 338b between the upright state and the collapsed state. For example, the restricting portion 338b may have a rotation shaft and may be configured to be displaceable between the upright state and the laid-down state about the rotation shaft. Further, the restricting portion 338b may be plastically deformable, and by plastically deforming the restricting portion 338b, it may be configured to be displaceable between the upright state and the collapsed state. The shape of the restricting portion 338b and the configuration for displacing it are not limited to those described above, and various configurations can be adopted.

A position adjusting portion 339 shown in FIGS. 10 to 12 adjusts the position of the inner rail portion 330 with respect to the outer rail portion 320 . The position adjusting portion 339 is fixed to the inner rail portion 330 and provided movably with respect to the outer rail portion 320 together with the inner rail portion 330 . The position adjusting portion 339 is elongated in the front-rear direction and has a plate shape with the thickness direction directed in the vertical direction. Further, the position adjusting portion 339 has a substantially rectangular shape in plan view. Further, the lateral dimension of the position adjusting portion 339 is substantially the same as the lateral dimension of the side frame portion 323 of the outer rail portion 320 .

The position adjusting portion 339 is placed on the upper surface of one of the left and right side frame portions 323 (the right side frame portion 323 in this embodiment). The position adjusting portion 339 has a front end fixed to the base portion 331 of the inner rail portion 330 . In this embodiment, the front end portion of the position adjusting portion 339 is fixed to the left-right outer surface of the side piece portion 332 of the base portion 331 via an appropriate fixture.

In addition, as shown in FIG. 11, the position adjustment part 339 extends so that the rear end portion is positioned outside the steel pipe 7 (rearward from the insertion hole 7a) in a state where the jig 300 for intermediate floors is attached to the steel pipe 7. is set. Since the position adjustment part 339 is configured as described above, the measurement person holds the rear end of the position adjustment part 339 and moves the position adjustment part 339 back and forth, thereby supporting the inner rail part 330 inside the steel pipe 7. It becomes possible to adjust the position of the measured unit 1A in the front-rear direction. The position adjustment portion 339 includes a scale portion 339a and a fixing portion 339b.

A scale portion 339a shown in FIG. 12 is a portion that serves as a reference for adjusting the position of the measuring unit 1A inside the steel pipe 7. As shown in FIG. The scale portion 339a has a hole shape penetrating the position adjusting portion 339 in the vertical direction. The scale portion 339a is arranged so that when the scale portion 339a overlaps the origin display portion 324a in the left-right direction, the measurement unit 1A is positioned substantially at the center in the front-rear direction inside the steel pipe 7. be done.

A plurality of scale portions 339a are provided according to the types of steel pipes 7 having different side dimensions in plan view. In this embodiment, scale portions 339a are provided at positions corresponding to the steel pipes 7 having the dimensions of 600 mm, 700 mm, 800 mm and 900 mm. In the illustrated example, numbers indicating the dimensions of the steel pipe 7 corresponding to each scaled portion 339a are shown beside each scaled portion 339a. The dimensions of the steel pipe 7 corresponding to the scale portion 339a are not limited to the examples described above, and various dimensions can be adopted.

The fixing portion 339 b fixes the position adjusting portion 339 to the side frame portion 323 of the outer rail portion 320 . The fixed portion 339b is inserted through the scale portion 339a. In this embodiment, the fixing portion 339b has a male screw portion, and the fixing portion 339b is inserted through the scale portion 339a and screwed into a female screw portion (not shown) formed in the side frame portion 323. It is configured such that the position adjusting portion 339 is fixed. As a result, the movement of the inner rail portion 330 in the front-rear direction with respect to the outer rail portion 320 is restricted, and the measurement unit 1A can be fixed at a predetermined position.

Arm portion 340 shown in FIGS. 10 and 11 is provided so as to extend in the left-right direction with respect to outer rail portion 320 . The arm portion 340 is provided rearward of the central portion of the outer rail portion 320 in the front-rear direction. Arm portion 340 is fixed to outer rail portion 320 . The arm portion 340 is provided so that both left and right side portions are positioned on both left and right sides of the insertion hole 7 a of the steel pipe 7 . The arm portion 340 includes a first arm portion 341 , a guide portion 342 , a second arm portion 343 and vertical position adjusting means 346 .

The first arm portion 341 is a portion fixed to the lower surface of the outer rail portion 320 . The first arm portion 341 is elongated in the left-right direction. The first arm portion 341 has a substantially quadrangular prism shape.

The guide portions 342 are portions provided at both left and right ends of the first arm portion 341 . The guide portion 342 is substantially L-shaped when viewed from the front. The guide portion 342 includes a fixed piece portion 342a and a guide piece portion 342b.

The fixed piece portions 342 a are portions fixed to the left and right ends of the first arm portion 341 . The fixed piece portion 342 a is fixed to the lower surface of the first arm portion 341 . The fixed piece portion 342a has a plate shape with the thickness direction directed vertically.

The guide piece portion 342b is a portion that extends downward from the left-right direction outer end portion of the fixed piece portion 342a. The guide piece portion 342b has a plate shape with the thickness direction oriented in the left-right direction. The guide piece portion 342b has a long hole 342c.

The long hole 342c is a hole penetrating through the guide piece portion 342b in the left-right direction. The elongated hole 342c has a vertically elongated shape. A pair of long holes 342c are formed with a space therebetween in the vertical direction.

In this embodiment, the fixed piece portion 342a and the guide piece portion 342b are connected via a rotation shaft whose axial direction is oriented in the front-rear direction. That is, the guide portion 342 constitutes a hinge. Thereby, when the jig 300 for intermediate floors is not used, the guide piece portion 342b can be folded with respect to the fixed piece portion 342a. It should be noted that the guide portion 342 is not limited to such a mode, and the fixed piece portion 342a and the guide piece portion 342b may be configured as non-displaceable members.

The second arm portion 343 is a portion arranged below the first arm portion 341 . The second arm portion 343 comprises a first piece portion 344 and a second piece portion 345 .

The first piece 344 is a portion elongated in the left-right direction. The first piece 344 has a plate shape with the thickness direction directed vertically. The first piece 344 has a hole 344a.

A hole portion 344a shown in FIG. 11 is a hole penetrating the first piece portion 344 in the vertical direction. The hole portions 344a are formed on both sides of the first piece portion 344 in the left-right direction. In this embodiment, the hole portion 344a is provided at a position overlapping the fixed piece portion 342a of the guide portion 342 in plan view. A member (female thread member) such as a nut that communicates with the hole 344 a and forms a female thread is fixed to the lower surface of the first piece 344 .

The second piece 345 is a portion that extends downward from both left and right ends of the first piece 344 . The second piece 345 has a plate shape with the thickness direction oriented in the left-right direction.

The vertical position adjusting means 346 shown in FIG. 11 can adjust the distance between the first arm portion 341 and the second arm portion 343 . The vertical position adjusting means 346 has a screw portion 347 and an operating portion 348 .

The screw portion 347 is inserted through the hole portion 344a of the second arm portion 343 and screwed into a female screw member that communicates with the hole portion 344a. The threaded portion 347 is elongated in the vertical direction. The upper end of the threaded portion 347 abuts on the fixed piece portion 342 a of the guide portion 342 .

The operating portion 348 enables the screw portion 347 to be operated. The operating portion 348 is provided at the lower end portion of the threaded portion 347 . The operating portion 348 has a shape with a larger diameter than the threaded portion 347 .

As described above, the threaded portion 347 is screwed into the female threaded member of the second arm portion 343 . Therefore, by rotating the operating portion 348 about the axial direction of the threaded portion 347 , the vertical position of the upper end portion of the threaded portion 347 with respect to the second arm portion 343 is displaced along with the rotation. Thereby, the distance between the first arm portion 341 and the second arm portion 343 can be adjusted via the fixing piece portion 342a with which the upper end portion of the screw portion 347 abuts.

The fixing means 350 shown in FIGS. 10 and 11 detachably fixes the front side and the rear side of the support portion 310 to the steel pipe 7 . Securing means 350 comprises front securing means 360 and rear securing means 370 .

The front fixing means 360 fixes the front portion of the outer rail portion 320 to the rearward inner surface (backward inner surface) of the steel pipe 7 . The front-side fixing means 360 is fixed to a portion of the rearward inner surface of the steel pipe 7 that overlaps the insertion hole 7a in a front view. The front-side fixing means 360 is provided at the central portion in the left-right direction on the front surface of the front frame portion 321 of the outer rail portion 320 . The front-side fixing means 360 is provided on the front surface of the front frame portion 321 through the rotation shaft so as to be rotatable with respect to the outer rail portion 320 about the rotation shaft whose axial direction is oriented in the front-rear direction. be done. The front fixing means 360 includes a case portion 361 , a magnet portion 362 and a switching portion 363 .

The case portion 361 constitutes the outer shell of the front fixing means 360 . The illustrated example shows an example in which the case portion 361 has a substantially rectangular parallelepiped shape.

The magnet part 362 is capable of generating magnetic force. The magnet portion 362 is housed in the internal space of the case portion 361 . The magnet portion 362 can generate a magnetic force on the front surface of the case portion 361 (the surface facing the inner surface facing the rear of the steel pipe 7). The magnet part 362 can switch between generation and non-generation of magnetic force.

The switching section 363 switches between generation and non-generation of magnetic force in the magnet section 362 . The switching portion 363 protrudes from the rear surface of the case portion 361 and can be rotated. The switching portion 363 switches between a state in which magnetic force is generated by the magnet portion 362 (magnetic force generation state) and a state in which magnetic force is not generated (non-generation state) in accordance with the rotation operation.

The rear fixing means 370 fixes the rear portion of the outer rail portion 320 to the outer surface of the steel pipe 7 facing the rear (outer surface on the front side). The rear fixing means 370 are provided on both sides of the arm portion 340 in the left-right direction. The rear side fixing means 370 is fixed to the left and right outer sides of the left and right second piece portions 345 of the second arm portion 343 . The rear fixing means 370 includes a case portion 371 , a magnet portion 372 and a switching portion 373 .

The case portion 371 constitutes the outer shell of the rear fixing means 370 . The illustrated example shows an example in which the case portion 371 has a substantially rectangular parallelepiped shape. The case portion 371 includes a guided portion 371a.

The guided portion 371 a is guided by the guide piece portion 342 b of the guide portion 342 . The guided portion 371a protrudes outward in the left-right direction from the outer surface of the case portion 371 in the left-right direction. The guided portion 371a is inserted into the elongated hole 342c of the guide piece portion 342b, so that the movement in the vertical direction is guided along the elongated hole 342c. A pair of guided portions 371a are provided at positions corresponding to the elongated holes 342c. In this embodiment, the projecting direction tip of the guided portion 371a is made larger in diameter than the portion to be inserted into the long hole 342c, and is configured to be restricted from coming off from the long hole 342c.

The magnet part 372 is capable of generating magnetic force. The magnet portion 372 is housed in the internal space of the case portion 371 . The magnet portion 372 can generate a magnetic force on the front surface of the case portion 371 (the surface facing the rearward outer surface of the steel pipe 7). The magnet part 372 can switch between generation and non-generation of magnetic force.

The switching section 373 switches between generation and non-generation of magnetic force in the magnet section 372 . The switching portion 373 protrudes from the rear surface of the case portion 371 and can be rotated. The switching portion 373 switches between a state in which magnetic force is generated by the magnet portion 372 (magnetic force generation state) and a state in which magnetic force is not generated (non-generation state) in accordance with the rotation operation.

The intermediate floor jig 300 formed as described above is installed, for example, on the intermediate floor Fn as follows.

First, on the intermediate floor Fn, the support portion 310 of the intermediate floor jig 300 is inserted through the insertion hole 7a of the steel pipe 7 . At this time, it is assumed that the measurement unit 1A is not attached to the support section 310. FIG.

Next, the front side fixing means 360 is brought into contact with the rearward inner surface of the steel pipe 7 , and the rear side fixing means 370 is brought into contact with the rearward outer surface of the steel pipe 7 . At this time, the angle is appropriately adjusted so that the intermediate floor jig 300 is in a substantially horizontal state.

Next, by operating the switching portion 363 of the front side fixing means 360 and the switching portion 373 of the rear side fixing means 370, the front side fixing means 360 and the rear side fixing means 370 are brought into the magnetic force generating state, thereby 300 is fixed to the steel pipe 7 at three points. In addition, when operating the switching portion 363 of the front-side fixing means 360, it is conceivable to use a predetermined operation tool (jig) elongated in the front-rear direction.

Next, the measurement unit 1A is attached to the inner rail portion 330 of the support portion 310 . Here, the vertical dimension of the measurement unit 1A is larger than the inner diameter dimension of the insertion hole 7a. Therefore, when attaching the measurement unit 1A, as shown in FIG. It is supported by the rail portion 330 .

Specifically, as shown in FIGS. 14 and 15A, the support piece portion 338 of the inner rail portion 330 ( The receiving portion 338a of the rotation support portion 335) supports the rotation shaft 5b of the measurement unit 1A. As a result, the measurement unit 1A rotates around the rotation shaft 5b by its own weight and faces downward. At this time, the lower piece portion 333 of the base portion 331 abuts against the rear surface of the measurement unit 1A, thereby restricting the bottom surface of the measurement unit 1A from rotating further rearward beyond the state in which it points downward. . That is, it becomes possible to position the measurement unit 1A in the rotation direction.

In the present embodiment, as shown in FIG. 13A, in the measurement unit 1A, the rotation shaft 5b is positioned rearward of the approximate center of the case portion 5A in the front-rear direction, and the center of gravity G is located generally at the center in the front-rear direction. . Therefore, when the measurement unit 1A rotates due to its own weight, the bottom surface of the measurement unit 1A tries to rotate further backward beyond the state in which the bottom surface of the measurement unit 1A points downward. It will be regulated by the piece 333 .

According to the configuration described above, the measurement unit 1A is supported so as to press the lower piece portion 333 of the base portion 331 by its own weight in a state where the bottom surface faces downward. As a result, the measurement unit 1A can be configured so that it is difficult to rotate in the direction in which the bottom surface faces forward, and shaking due to the rotation of the measurement unit 1A can be suppressed.

When attaching the measurement unit 1A, the attachment work is facilitated by locating the inner rail portion 330 in the vicinity of the insertion hole 7a. Also, when the measurement unit 1A is attached, the auxiliary camera section 5e is set in an upright state in advance, if necessary.

Next, with the rotating shaft 5b supported by the receiving portion 338a, the regulating portion 338b in the upright state is displaced to the collapsed state. As a result, the upward movement of the rotating shaft 5b is restricted, and the falling off of the measurement unit 1A is restricted.

Next, by moving the inner rail portion 330 with respect to the outer rail portion 320, the longitudinal position of the measurement unit 1A is adjusted to be positioned at the central portion of the inner space of the steel pipe 7 in plan view. At this time, the inner rail portion 330 can be easily moved outside the steel pipe 7 by moving the inner rail portion 330 via the position adjusting portion 339 .

Specifically, as shown in FIG. 12, the position adjusting portion 339 is moved forward and backward so that the scale portion 339a corresponding to the dimensions of the steel pipe 7 is aligned with the origin display portion 324a. As a result, the position of the measurement unit 1A in the front-rear direction is positioned at the central portion of the internal space of the steel pipe 7 in plan view.

Next, the fixing portion 339b is inserted through the scale portion 339a and screwed into the female screw portion formed in the side frame portion 323. As shown in FIG. As a result, the movement of the inner rail portion 330 in the front-rear direction with respect to the outer rail portion 320 is restricted, and the measurement unit 1A is fixed at a predetermined position.

Next, the right and left vertical position adjusting means 346 of the arm portion 340 are appropriately operated to adjust the distance between the first arm portion 341 and the second arm portion 343 at two points. Thereby, the angle of the measurement unit 1A can be adjusted around the rotation axis extending in the front-rear direction. This enables fine adjustment such that the measurement unit 1A is oriented in a direction that can be suitably oriented with respect to the top end 8a of the concrete 8 in the internal space of the steel pipe 7. At this time, for example, it is possible to adjust the orientation of the measurement unit 1A while confirming that the light of the laser rangefinder 4 is positioned substantially at the center of the top end 8a of the concrete 8 by using the image from the auxiliary camera section 5e. is.

In the present embodiment, the front side fixing means 360 is provided so as to be rotatable about the rotation shaft with the axial direction directed in the front-rear direction with respect to the outer rail portion 320. It becomes easy to adjust the orientation (angle) of the measurement unit 1A about the rotation axis. The front side fixing means 360 is not limited to such a configuration, and may be configured to be rotatable around a rotation axis with the axial direction directed in the left-right direction.

The installation procedure described above is an example, and the procedure for installing the intermediate floor jig 300 is not limited to the above example. Specifically, in the above-described installation procedure, after the measurement unit 1A is attached to the inner rail portion 330 of the support portion 310, the inner rail portion 330 is moved with respect to the outer rail portion 320 to move the measurement unit 1A forward and backward. However, the configuration is not limited to this. For example, the scale portion 339a corresponding to the dimensions of the steel pipe 7 is aligned with the origin display portion 324a in advance, and the position of the inner rail portion 330 with respect to the outer rail portion 320 is adjusted. , the support portion 310 of the jig 300 for the intermediate floor may be inserted.

Although the configuration of the intermediate floor jig 300 has been described above, the intermediate floor jig 300 is not limited to the configuration described above.

Specifically, in the example described above, an example in which the rotation support portion 335 is provided with the restricting portion 338b that can be displaced between the upright state and the collapsed state is shown, but the present invention is not limited to such an example. For example, the rotation support portion 335 may be a rotation support portion 335A according to the first modified example shown in FIG. 15(b).

In the rotary support portion 335A, the configurations of the receiving portion 338Aa and the restricting portion 338Ab of the support piece portion 338A are different from the configurations of the receiving portion 338a and the restricting portion 338b of the support piece portion 338 described above.

Similar to the receiving portion 338a, the receiving portion 338Aa detachably and rotatably supports the rotating shaft 5b. The receiving portion 338Aa is recessed at the upper end portion of the support piece portion 338A. The receiving portion 338Aa is substantially S-shaped in a side view.

Specifically, the receiving portion 338Aa is formed so as to be recessed downward from the upper end portion of the support piece portion 338A to the middle portion in the vertical direction, and is formed to be recessed forward from the middle portion in the vertical direction to the middle portion in the front-rear direction. Further, a bottom portion is formed so as to be recessed downward from the middle portion in the front-rear direction. Further, the receiving portion 338Aa has a curved bottom portion corresponding to the outer diameter of the shaft body portion 5c of the rotating shaft 5b.

By forming the receiving portion 338Aa into the above shape, the supporting piece portion 338 is formed with a portion positioned above the bottom portion of the receiving portion 338Aa. In this modified example, the portion positioned above the bottom portion serves as a restricting portion 338Ab that restricts upward movement of the rotating shaft 5b (shaft body portion 5c) positioned at the bottom portion. With such a configuration as well, the restricting portion 338Ab can restrict the rotation shaft 5b from falling out of the receiving portion 338Aa.

Further, in the above-described example, a predetermined operation tool (jig) elongated in the front-rear direction is used when operating the switching portion 363 of the front-side fixing means 360, but the configuration is not limited to such an example. do not have. For example, an intermediate floor jig 300 according to the second modified example shown in FIG. 16 may be used.

In the intermediate floor jig 300 according to the second modified example, the configuration of the front side fixing means 360A is different from the configuration of the front side fixing means 360 described above.

The front-side fixing means 360A is configured such that a switching portion 363A capable of switching between generation and non-generation of magnetic force in the magnet portion 362 is provided at the rear end portion of the support portion 310 . In the illustrated example, the switching portion 363A is provided at the rear end portion of the left side frame portion 323 of the outer rail portion 320 . The front side fixing means 360A is configured to transmit the switching operation of the switching portion 363A to the magnet portion 362 via an appropriate transmission portion.

As the front side fixing means 360A, for example, by displacing the position of the magnet portion 362 inside the case portion 361 in accordance with the switching operation of the switching portion 363A via a transmission portion such as an appropriate wire, a magnetic force is generated. A configuration that allows switching between the state and the non-occurrence state is conceivable. In addition, by switching on and off the magnet portion 362 constituting the electromagnet, the front side fixing means 360A can be switched between the magnetic force generating state and the non-generating state according to the switching operation of the switching portion 363A via a transmission portion such as an appropriate electric wire. The configuration may be such that the state can be switched. In this case, it is conceivable to form an appropriate wiring space inside the outer rail portion 320 and accommodate the transmission portion in the wiring space. The configuration of the front fixing means 360A is not limited to the example described above, and various configurations can be adopted.

With the above configuration, switching between the magnetic force generating state and the non-generating state of the front side fixing means 360A fixed inside the steel pipe 7 can be performed without using a separate long predetermined operation tool (jig). 7 can be done outside.

As described above, the intermediate floor jig 300 (jig) according to the second embodiment of the present invention is
The support part 310 is
an outer rail portion 320 (first rail portion);
an inner rail portion 330 (second rail portion) provided movably in the longitudinal direction of the support portion 310 with respect to the outer rail portion 320;
and
One of the outer rail portion 320 and the inner rail portion 330 is provided with the fixing means 350, and the other is provided with the measurement unit 1A,
It further comprises a scale portion 339a that serves as a guideline for adjusting the position of the measuring unit 1A inside the steel pipe 7. As shown in FIG.

With such a configuration, the position of the measurement unit 1A can be easily adjusted. That is, by moving the inner rail portion 330 with respect to the outer rail portion 320 while checking the scale portion 339a, the position of the measuring unit 1A can be easily adjusted.

In addition, the fixing means 350 is
Having a magnet part 362 that can switch between generation and non-generation of magnetic force,
At least for the magnet portion 362 of the front side fixing means 360A (fixing means) fixed to the inner surface of the steel pipe 7, switching between generation and non-generation of magnetic force is performed by a switching portion 363A ( operating means).

With such a configuration, the attachment and detachment of the front fixing means 360A fixed to the inner surface of the steel pipe 7 can be easily performed. That is, switching between generation and non-generation of the magnetic force of the magnet portion 362 of the front side fixing means 360A fixed to the inner surface of the steel pipe 7 can be operated outside the steel pipe 7, so that the front side fixing means 360A can be switched. Easy to put on and take off.

Further, the support portion 310 is
The measurement unit 1A is rotatably supported so that the measurement unit 1A faces downward due to its own weight.

With such a configuration, the measuring unit 1A can be easily directed toward the top end 8a of the concrete 8. As shown in FIG. That is, the measurement unit 1A is rotatably supported so that the measurement unit 1A faces downward due to its own weight. Labor can be saved, and the top end 8a of the concrete 8 can be easily directed.

Even if the vertical dimension of the measurement unit 1A is larger than the inner diameter of the insertion hole 7a of the steel pipe 7, the measurement unit 1A is allowed to pass through the insertion hole 7a while the measurement unit 1A is tilted. After being positioned inside, it can be directed downward by its own weight, and the measuring unit 1A can be easily installed inside the steel pipe 7 .

Further, the support portion 310 is
a receiving portion 338a that detachably and rotatably receives the measurement unit 1A;
a regulating portion 338b (regulating portion 338Ab) that regulates falling off of the measurement unit 1A from the receiving portion 338a;
is provided.

With such a configuration, it is possible to prevent the measurement unit 1A from falling off from the support section 310 while making the measurement unit 1A detachable from the support section 310 .

Note that the outer rail portion 320 according to this embodiment is an embodiment of the first rail portion according to the present invention.
Also, the inner rail portion 330 according to this embodiment is an embodiment of the second rail portion according to the present invention.
Also, the switching unit 363A according to the present embodiment is an embodiment of the operating means according to the present invention.

Although the second embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

For example, in the above-described embodiment, the measurement unit 1A is rotatably supported so that the measurement unit 1A faces downward due to its own weight, but the configuration is not limited to this. For example, the measuring unit 1A may be rotatably supported so that the direction in which the measuring unit 1A faces can be changed manually.

Further, in the above-described embodiment, the configuration is such that the restriction portion 338b (restriction portion 338Ab) that restricts the measurement unit 1A from falling off from the receiving portion 338a is provided, but the configuration is not limited to this. For example, a configuration in which the restriction portion 338b (the restriction portion 338Ab) is not provided may be adopted.

Further, in each of the above embodiments, the control unit 290 is installed on the floor (top floor Fr or intermediate floor Fn) where the top floor jig 100 or the intermediate floor jig 200 and the intermediate floor jig 300 are installed, Although the press-in speed of the concrete 8 and the like are displayed via the monitor installed on the floor (ground floor Fa) where the concrete 8 is press-in, the present invention is not limited to this configuration. For example, the control unit 290 may display the press-in speed of the concrete 8, etc., not on the monitor installed on the ground floor Fa, but on the display of a predetermined tablet terminal that can be carried by the worker. Also, the control unit 290 may not be installed on the top floor Fr or the middle floor Fn, but may be configured by the tablet terminal described above.

1 measurement unit 1A measurement unit 4 laser rangefinder 7 steel pipe 8 concrete 8a crown 9a upper surface 200 jig for intermediate floor 210 support section 220 outer rail section (first rail section)
230 inner rail portion (second rail portion)
240 arm portion 250 fixing means 260 front side fixing means (first fixing means)
270 rear fixing means (second fixing means)
274 vertical position adjusting means 280 bracket 300 intermediate floor jig 310 support portion 320 outer rail portion (first rail portion)
330 inner rail portion (second rail portion)
338a receiving portion 338b restricting portion 338Ab restricting portion 339a scale portion 350 fixing means 360 front side fixing means (first fixing means)
363A switching unit (operating means)

Claims (11)

A jig for supporting a measurement unit having a laser range finder for measuring the distance from above the concrete pressed into the steel pipe for CFT structure to the top of the concrete,
a long support portion that is inserted through an insertion hole provided in a side surface of the steel pipe and supports the measurement unit so that the measurement unit faces downward inside the steel pipe;
fixing means for detachably fixing one longitudinal side and the other longitudinal side of the support portion to the steel pipe;
comprising a
Jig. The fixing means are
Having a magnet part that can switch between generation and non-generation of magnetic force,
The jig according to claim 1. further comprising arm portions provided on the support portion and extending on both sides in a direction perpendicular to the longitudinal direction of the support portion;
The fixing means are
a first fixing means provided on one side in the longitudinal direction of the support portion and capable of being fixed to the inner surface of the steel pipe;
second fixing means provided on both sides in the extending direction of the arm portion on the other side in the longitudinal direction of the support portion and capable of being fixed to both side portions of the insertion hole on the outer surface of the steel pipe;
comprising a
The jig according to claim 1 or 2. The arm portion is provided so as to extend to both left and right sides,
The second fixing means is
can be fixed to the left and right side portions of the insertion hole,
Vertical position adjusting means capable of adjusting the vertical position of the left and right side portions of the arm portion with respect to the fixed position with respect to the steel pipe,
The jig according to claim 3. The support part is
a first rail portion;
a second rail portion provided movably in the longitudinal direction of the support portion with respect to the first rail portion;
and
One of the first rail portion and the second rail portion is provided with the fixing means, and the other is provided with the measurement unit,
A jig according to any one of claims 1 to 4. A wiring space is formed in at least one of the first rail portion and the second rail portion, in which a wiring connected to the measurement unit is arranged,
The jig according to claim 5. Further comprising a bracket fixed to the measurement unit and fixed to an upper surface of one of the first rail portion and the second rail portion,
The jig according to claim 5 or 6. The support part is
a first rail portion;
a second rail portion provided movably in the longitudinal direction of the support portion with respect to the first rail portion;
and
one of the first rail portion and the second rail portion is provided with the fixing means, and the other is provided with the measurement unit;
Further comprising a scale portion that serves as a guideline for adjusting the position of the measurement unit inside the steel pipe,
A jig according to any one of claims 1 to 7. The fixing means are
Having a magnet part that can switch between generation and non-generation of magnetic force,
At least the magnet portion of the fixing means fixed to the inner surface of the steel pipe is provided with an operation means capable of switching between generation and non-generation of magnetic force outside the steel pipe,
A jig according to any one of claims 1 to 8. The support part is
rotatably supporting the measurement unit so that the measurement unit faces downward due to its own weight;
A jig according to any one of claims 1 to 9. The support part is
a receiving portion that detachably and rotatably receives the measurement unit;
a regulating portion that regulates dropout of the measuring unit from the receiving portion;
comprising a
The jig according to claim 10.

Images