JP2015232253A - Upper surface indication tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a convenient upper surface indication tool.SOLUTION: An upper surface indication tool includes: a rod-like pile member that has a slender hole coaxially formed toward a tip from a base end; a rod-like member that is accommodated in the hole in such a manner as to be capable of being taken into/out of the hole through the base end; and a setting member for setting the length of pulling out the rod-like member from the base end. The rod-like member has an upper surface indication member provided at an end exposed from the hole.

Description

  The present invention relates to a top end indicating tool that indicates the level of a concrete surface, that is, the top end when placing concrete.

  Building floor foundation work is done by building a formwork of the foundation structure or by placing crushed stone inside the building's inner surface foundation and placing concrete on the reinforcing bars. . At the time of placing the concrete, a top end indicating tool for instructing the top end is used in advance, and the concrete is placed up to the indicated level to level the placing surface.

  The top end indicating tool used for such construction includes a bar having a level indicating portion indicating the top end, and an elastically deformable fixing member that fixes the bar to the reinforcing bar so as to be movable in the vertical direction. A ceiling support tool is known (see, for example, Patent Document 1).

Japanese Patent No. 5271878

  By the way, such a conventional top edge extension assisting tool is elastically fixed to a reinforcing bar before placing concrete, and the top level indicator is set to a desired height by the vertical movement of the bar. It is like that. Therefore, when an operator, a concrete supply hose, or the like comes into contact with the auxiliary tool when placing concrete, there is a problem that the set top end indicating position is shifted or the auxiliary tool is damaged by an impact.

  The present invention has been made in consideration of such circumstances, and avoids contact of workers and hoses during concrete placing work, and accurately and safely instructs the top end without causing any deviation. It is intended to provide a crest indicator that can be used.

  The present invention relates to a rod-shaped pile member having an elongated hole formed coaxially from the proximal end to the distal end, a rod-shaped member accommodated in the hole so as to be able to be inserted and removed from the proximal end, and the rod-shaped member from the proximal end And a setting member for setting a drawing length, and the bar-shaped member provides a top end indicating tool provided with a top end indicating member at an end exposed from the hole.

  In the top end indicating tool of the present invention, the bar-shaped member is accommodated in the pile member so as to be able to be pulled out, the pull-out length from the base end of the bar-shaped member is set by the setting member, and the top end indicating member is the end of the bar-shaped member Is provided.

  Therefore, after laying the foundation crushed stone, driving the top end indicating pile, pulling out the rod-shaped member from the pile member and setting its height with the setting member, the rod-shaped member is accommodated in the pile member again, The end-indicating pile does not interfere with preliminary work such as rebar fastening work and concrete supply hose placement work, which is the next process, and is not damaged.

  And, after completing the preliminary work, pull out the rod-shaped member from the pile member, attach the top end indicating part, and place concrete according to the top end level indicated by the top end indicating part, so that it has a high level plane level Concrete is placed safely.

It is a front view which shows the top end indicating tool of 1st Embodiment of this invention. It is a disassembled perspective view of the top end indicating tool shown in FIG. It is a principal part longitudinal cross-sectional view of the top end indicating tool shown in FIG. It is a principal part perspective view of the top end indicating tool shown in FIG. It is explanatory drawing which shows operation of the top end indicating tool shown in FIG. It is explanatory drawing which shows operation | movement of the top end indicating tool shown in FIG. It is a fragmentary sectional view of the component of the top end indicating tool shown in FIG. It is operation | movement explanatory drawing of the principal part of the top end indicating tool shown in FIG. It is explanatory drawing which shows the usage example of the top end indicating tool shown in FIG. It is a front view which shows the top end indicating tool of 2nd Embodiment of this invention. It is a disassembled perspective view of the top end indicating tool shown in FIG. It is operation | movement explanatory drawing of the principal part of the top end indicating tool shown in FIG. It is explanatory drawing which shows operation | movement of the top end indicating tool shown in FIG. It is explanatory drawing which shows the usage example of the top end indicating tool shown in FIG.

  The top end indicating tool of the present invention includes a rod-like pile member having an elongated hole formed coaxially from the proximal end to the distal end, a rod-like member accommodated in the hole so as to be able to be taken in and out from the proximal end, And a setting member for setting a length to be pulled out from the base end, and the bar-like member includes a top end indicating member at an end portion exposed from the hole.

  The setting member is coaxially accommodated in the hole and accommodated coaxially so that the rod-shaped member can be inserted and removed, and the axial movement of the rod-shaped member and the rotation of the shaft center when the rod-shaped member is pulled out of the cylindrical member May be composed of a first lock mechanism for releasably fixing, a male screw portion having a male screw provided on the outer periphery of the cylindrical member, and a fixing screw portion having a female screw provided in the hole and screwed into the male screw.

  The setting member may include a biasing member that biases the rod-shaped member in the pull-out direction.

  The setting member may include a second lock mechanism that releasably fixes the axial movement of the rod-shaped member when the rod-shaped member is accommodated to a predetermined depth of the cylindrical member. The rod-shaped member may be fixed in the rotation direction about the axis with respect to the cylindrical member.

  From another viewpoint, the present invention provides a first rod-shaped member having an elongated hole formed coaxially from the proximal end to the distal end, a second rod-shaped member accommodated in the hole so as to be able to be inserted into and removed from the proximal end, and the base A setting mechanism for setting a drawing length of the second rod-shaped member from the end; and a support member having a substrate for vertically supporting the first rod-shaped member, the second rod-shaped member being exposed from the hole The top end indicating tool provided with the top end indicating member at the end portion to be provided is provided.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. This does not limit the invention.

[First Embodiment]
Components of the crest pointing device Figure 1 is top end pointing device of the first embodiment of the present invention (hereinafter, referred to as top end instruction piles in the first embodiment) front view showing the FIG. 2 an exploded perspective view thereof, FIG. 3 is a longitudinal sectional view of the main part.

  As shown in these drawings, particularly FIG. 2, the top end indicating pile 100 is provided with a distal end 9a and a proximal end 9b, the distal end 9a is formed in a sharp shape, and from the proximal end 9b toward the distal end 9a. A square pile member 9 having an elongated vertical hole 19 formed coaxially is provided.

  Furthermore, the top end indicating pile 100 includes a rod-like member 5 that is accommodated in the vertical hole 19 so as to be able to be inserted and removed from the base end 9b, and a drawer length setting member 4 that sets a pull-out length from the base end 9b of the rod-like member 5. Prepare. And the rod-shaped member 5 is attached to the edge part on the side exposed from the vertical hole 19 so that the top end indicating member 2 can be detached.

  As shown in FIG. 2 and FIG. 7 (a), the top end indicating member 2 has a disk-shaped top end point 2a having a boss 2b projecting downward, and vertically upward from the center of the top end point 2a. And a laser detection shaft 1 standing upright. The laser detection shaft 1 includes a laser detection unit 23 in the vicinity of the upper end thereof.

  The laser detection axis 1 can be detached from the top end point 2a as shown in FIG. A permanent magnet 14 is embedded in the lower end of the laser detection shaft 1 by press-fitting, while a magnetic countersunk screw 16 is screwed to the bottom of the insertion hole 2c at the center of the top end point 2a.

  Accordingly, when the tip of the laser detection shaft 1 is inserted into the insertion hole 2c, the permanent magnet 14 is attracted to the countersunk screw 16, so that the laser detection shaft 1 is stably erected at the top end point 2a. It is easily pulled out when not needed.

  The top end point 2a is a white disk having a diameter of 50 mm and a thickness of 4 mm, made of POM resin, and the laser detection shaft 1 is a white round bar having an outer diameter of 5 mm and a length of 188 mm, which is made of the same material. . For example, a laser beam reflecting tape is wound around the laser detector 23 of the laser detection shaft 1.

  Next, the rod-shaped member 5 (FIG. 2) is comprised from the cap 6 with which the lower end of the 1st pipe 5a and the 1st pipe 5a is mounted | worn. As shown in FIG. 4A, the first pipe 5a has two notched grooves 24 at the upper end and a notched portion 25 at the lower end.

  As will be described later, a part of the first pipe 5a is bent 90 degrees outward in the notch 25, and the locking claw 13 shown in FIG. 4B is formed. Note that a commercially available stainless steel pipe having an outer diameter of 16 mm and an inner diameter of 14 mm is cut into a length of 193 mm for the first pipe 5 a, and a commercial product made of POM resin is used for the cap 6.

  Next, the drawer length setting member 4 (FIG. 2) includes a second pipe 4a, a male screw (right screw) portion 12 formed near the upper end of the second pipe 4a, and a female screw that is screwed into the male screw portion 12. The fixing screw portion 3 includes a compression spring (coil spring) 7 and a cap 8.

  As shown in FIG. 2, the fixing screw portion 3 has locking projections 21 at two locations on the outer periphery. The second pipe 4a has a longitudinal slit 17 extending in the axial direction, and an upper lateral slit 10 that is connected to the upper end of the longitudinal slit 17 and extends in the counterclockwise direction about the axis (as viewed from the upper end of the second pipe 4a). The lower horizontal slit 11 is provided continuously to the lower end of the vertical slit 17 and extends in the clockwise direction around the axis.

  The lower horizontal slit 11 extends obliquely upward at an angle of 45 degrees with respect to the vertical slit 17 as shown in FIG. The second pipe 4a is a commercially available pipe made of vinyl chloride resin, and has an outer diameter of 22 mm, an inner diameter of 16.1 mm, and a length of 215 mm.

  The compression spring 7 is manufactured using a piano wire or a stainless steel spring material, and has a wire diameter of 0.6 mm, a coil outer diameter of 12 mm, a free length of 150 m, and a number of turns of 32. The cap 8 is made using the same material as the cap 6.

  Next, the square pile member 9 (FIG. 2) is formed of a resin made of a recycled material of PP and PE, has a square cross section of 45 mm × 45 mm, and has a length of 320 mm. The vertical hole 19 has an inner diameter of 24 mm and a depth of 260 mm.

  The upper end of the vertical hole 19 has an inner diameter increased from 24 mm to 30 mm as a fixing screw insertion portion 20 for inserting the fixing screw portion 3, and has two locking grooves 22 for locking the locking projections 21 of the fixing screw portion 3. Prepare.

  Screw holes 18 are formed in two opposite side surfaces of the upper portion of the square pile member 9 in directions orthogonal to the axis, and the fixing screw portion 3 inserted into the fixing screw insertion portion 20 is screwed into the screw hole 18. It is fixed by a fixing screw 30.

Assembling method of the top end indicating pile First, in the rod-like member 5 shown in FIG. 2, the cap 6 is fitted into the lower end of the first pipe 5a. Next, in the drawer length setting member 4, the fixing screw portion 3 is screwed into the male screw portion 12 at the upper end of the second pipe 4a. Then, the compression spring 7 is inserted from the lower end of the second pipe 4a, and the cap 8 is fitted into the lower end.

  Next, the first pipe 5a is inserted from the upper end of the second pipe 4a with the cap 6 down while compressing the compression spring 7, and the notch 25 (FIG. 4 (a)) at the lower end of the first pipe 5a is inserted. The first pipe 5a is held at a position that can be seen from the outside through the lower horizontal slit 11 (FIG. 2).

  Then, a jig is inserted from the lower lateral slit 11, and a part of the first pipe 5a of the notch 25 is bent outward by 90 degrees as shown in FIG. 11 is projected. And the latching claw 13 which latches to the lower horizontal slit 11 like FIG.8 (b) is formed.

  In this state, the first pipe 5 a is urged upward by the compression spring 7, but the upward movement is locked by the locking claw 13 that locks the lower lateral slit 11. Here, when the first pipe 5a is slightly pushed downward into the second pipe 4a, or when the first pipe 5a is slightly rotated counterclockwise about the axis, the locking claws 13 shown in FIG. Moves along the 45-degree inclination of the lower horizontal slit 11 to the vertical slit 17 so that the locking claw 13 is detached from the lower horizontal slit 11.

  When the locking claw 13 is disengaged from the lower horizontal slit 11, the locking claw 13 can move upward along the vertical slit 17, and the first pipe 5 a moves upward by the urging force of the compression spring 7. And if the latching claw 13 latches to the upper end of the vertical slit 17, the 1st pipe 5a will stop. Further, when the first pipe 5a is slightly rotated counterclockwise about the axis, the locking claw 13 is locked to the upper horizontal slit 10 as shown in FIG. 8A, and the first pipe 5a is moved in the vertical direction. Locked.

  Accordingly, the locking claw 13 and the upper lateral slit 10 form an upper locking mechanism (first locking mechanism) of the first pipe 5a with respect to the second pipe 4a, and the locking claw 13 and the lower lateral slit 11 form the second pipe. A lower lock mechanism (second lock mechanism) of the first pipe 5a with respect to 4a is formed.

  After confirming the action of the upper locking mechanism, the first pipe 5a is pushed into the second pipe 4a, and the locking claw 13 is locked to the lower lateral slit 11 again. Then, the drawer length setting member 4 is inserted into the vertical hole 19 from the base end 9 b of the square pile member 9 with the cap 8 facing down. Next, after the two locking projections 21 of the fixing screw part 3 are locked in the two locking grooves 22, the fixing screw 30 is tightened to fix the fixing screw part 3 to the square pile member 9.

  In this way, when the rod-shaped member 5 shown in FIG. 2 and the drawer length setting member 4 are assembled into the square pile member 9, the internal assembly of the square pile member 9 shown in FIG. 3 is completed. By inserting the top end indicating portion 2 into the upper end of the first pipe 5a incorporated in the square pile member 9, the assembly of the top end indicating pile 100 shown in FIG. 1 is completed.

Operation Method of Top End Indicating Pile FIG. 5 is an explanatory diagram showing the configuration and functions of the driver 26 used for operating the top end indicating pile 100. The driver 26 includes a guide 28 fitted into the upper end of the first pipe 5a at the tip, and an insertion piece 27 inserted into the cutout groove 24 at the upper end of the first pipe 5a when the guide 28 is fitted.

  Further, the driver 26 includes a ring-shaped laser detector 29 at a position corresponding to the height of the top end point 2a when the top end indicating member 2 (FIG. 2) is attached to the tip of the first pipe 5a. For example, a laser light reflecting tape is wound around the laser detection unit 29.

  The driver 26 rotates the first pipe 5a about the axis in the direction of arrow A (clockwise) and the direction of arrow B (counterclockwise), and may be a manual driver or an electric driver.

  Accordingly, the screw 26 shown in FIG. 5 is inserted into the upper end of the first pipe 5a for the square pile member 9 in the state shown in FIG. 3, that is, in a state where the top end indicating portion 2 is removed from the top end indicating pile 100. When the first pipe 5a is pushed downward or slightly rotated counterclockwise, as described above, the locking claw (FIG. 8B) at the lower end of the first pipe 5a becomes the lower horizontal slit of the second pipe 4a. 11 moves out into the vertical slit 17.

  As a result, the first pipe 5a moves upward by the urging force of the compression spring 7. At this time, when the locking claw 13 moves along the vertical slit 17 and reaches the upper end of the vertical slit 17, the upward movement of the first pipe 5a stops. Accordingly, the first pipe 5a protrudes upward from the base end 9b of the square pile member 9 as shown in FIG. 6A, and the height from the fixing screw portion 3 to the tip of the first pipe 5a becomes Ha. .

  At this point, when the first pipe 5a is slightly rotated counterclockwise using the screwdriver 26, the locking claw 13 at the lower end of the first pipe 5a is locked to the upper horizontal slit 10 as shown in FIG. As described above, the vertical movement of the first pipe 5a relative to the second pipe 5a and the rotation of the shaft center are locked.

  Therefore, when the first pipe 5a shown in FIG. 6 (a) is further rotated counterclockwise about the shaft center using the driver 26 (FIG. 5), the female thread of the fixing screw portion 3 of the second pipe 4a is accordingly accompanied. And the second pipe 4a moves upward by Hb as shown in FIG. 6 (b), and moves from the fixed screw part 3 to the tip of the first pipe 5a. The height is (Ha + Hb).

  When the first pipe 5a shown in FIG. 6B is rotated clockwise about the axis, the second pipe 4a and the first pipe 5a can be lowered to the state shown in FIG. In this way, the height of the first pipe 5a from the fixing screw portion 3 can be adjusted (set) from Ha to (Ha + Hb) by the action of the fixing screw portion 3 and the male screw portion 12.

  Further, when the first pipe 5a whose protrusion height has been adjusted is slightly rotated clockwise using the screwdriver 26, the locking claw 13 shown in FIG. 8A is moved from the upper horizontal slit 10 to the vertical slit 17. Moving. Therefore, when the first pipe 5a is pushed downward, the locking claw 13 moves along the vertical slit 17, and the first pipe 5a descends accordingly.

  When the locking claw 13 hits the lower end of the vertical slit 17, when the first pipe 5a is slightly rotated clockwise, the locking claw 13 is locked to the lower horizontal slit 11 as shown in FIG. The first pipe 5a is held inside the square pile member 9 as shown in FIG.

  Accordingly, after the first pipe 5a is pulled out from the square pile member 9 and the height thereof is adjusted, the first pipe 5a is temporarily accommodated in the square pile member 9, and the first pipe 5a is adjusted to the adjusted height as needed from the square pile member 9. It becomes possible to withdraw again.

Using crest instructions piles Next, an example of the actual use of the crest instruction pile 100. As shown in FIG. 9, a crushed stone layer 32 is formed on the ground 31 with a thickness of about 10 cm, a moisture-proof sheet (not shown) is laid thereon, and the reinforcing bars 15 are disposed. Then, the square pile member 9 shown in FIG. 3 is driven by a height H (= 20 to 25 mm). Here, the red laser beam indicating the target top level L is emitted horizontally.

  Next, as shown in FIG. 6A, the first pipe 5a is pulled out from the second pipe 4a. Next, the first pipe 5a is rotated counterclockwise about the axis by using a driver 26 (FIG. 5), and the second pipe 4a is gradually pulled out from the square pile member 9 together with the first pipe 5a.

  When the laser detection unit 29 of the driver 26 receives the red laser beam during the drawing operation, the drawing operation is stopped. This completes the operation of setting the first pipe 5a to a height corresponding to the desired top end.

  Next, the first pipe 5a is pushed into the second pipe 4a as shown in FIG. 3, and the first pipe 5a is held in the second pipe 4a as described above. Do not disturb the rebar fastening process and the concrete supply hose installation work.

  Then, when the preliminary work is completed and the top end instruction is necessary for placing concrete, the first pipe 5a is pulled out from the second pipe 4a of the square pile member 9, and the top end of the first pipe 5a is attached to the top end. The end indicator 2 (see FIGS. 2 and 7A) is attached.

  Next, concrete 33 is cast and leveled so that the surface of the top end point 2a of the top end indicating portion 2 and the surface L of the concrete are flush with each other as shown in FIG. In addition, immediately before placing concrete, a blue laser beam for height confirmation is irradiated horizontally toward the laser detection unit 23 of the laser detection axis 1 of the top end indicating unit 2, and the height of the top end point 2a. Is reconfirmed.

  When the laser detection unit 23 cannot receive the blue laser beam for height confirmation, the top end indicating unit 1 is pulled out from the first pipe 5a, and the first pipe 5a is rotated clockwise or counterclockwise by using the driver 26. Thus, the height of the first pipe 5a, that is, the height of the top end point 2a is readjusted.

  When the placement of the concrete 33 based on the top end point 2a is completed, the laser detection axis 1 is removed from the top end point 2a. Next, a plurality of tiles are laid on the upper surface of the placed concrete via an adhesive layer. In this way, the concrete placing work using the top end indicating pile 100 is performed.

  It should be noted that the basic structure of the present invention in which the bar-shaped member is pulled out after the top end indicating pile is driven into the ground can also be used for a flag insertion holder, a site or field fence, a mountain climbing pile (Haken), and the like. Moreover, although this invention has the shape of a pile, it is not limited to the shape, What is necessary is just a container which can take in and out a rod-shaped member.

[Second Embodiment]
Front view of a top end pointing device of the second embodiment of the component diagram 10 of the top end pointing device the present invention. FIG. 2 is an exploded perspective view thereof. As shown in these drawings, the top end indicator 200 includes a first rod-like member 104 having elongated holes 103a and 103b formed coaxially from the base end 101 toward the tip 102, and base ends of the holes 103a and 103b. The second rod-shaped member 105 accommodated so as to be able to be withdrawn / inserted from 101, the setting mechanism 106 for setting the pull-out length of the second rod-shaped member 105 from the base end 101 of the first rod-shaped member 104, and the first rod-shaped member 104 And a support member 108 having a substrate 107 that penetrates and supports the substrate 107.

And the 2nd rod-shaped member 105 is provided with the top end instruction | indication member 110 in the edge part 109 of the side exposed from the hole 103a.
As shown in FIG. 11, the top end indicating member 110 is a disk-shaped top end point 112 having a cylindrical boss 111 projecting downward, and a laser standing vertically from the center of the top end point 112 upward. And a detection shaft 113.

The laser detection shaft 113 is press-fitted into a hole (not shown) formed in the center of the top surface of the top end point 112, and can be easily pulled out by an operator when not needed.
The top end point 112 is made of the same size and material as the top end point 2a of the first embodiment, and the laser detection axis 113 is made of the same material as the top end point 112 with an outer diameter of 1 mm and a length of 100 mm. .

A laser beam reflecting tape is wound around the laser detection shaft 113 at a predetermined height, and a coating that reflects, for example, laser beam is applied to the upper surface of the top end point.
In addition, a pin hole 115 into which the pin 114 is inserted penetrates the cylindrical boss 111 protruding downward from the top end point 112 in a direction perpendicular to the axis.

  Next, the first rod-shaped member 104 includes a first pipe 116 and a second pipe 117 having an external thread (right thread) on the outer periphery, and is formed in the direction perpendicular to the axis in the vicinity of the upper end of the second pipe 117. A hexagon socket head cap screw 119 having an outer diameter of 3 mm (M3) and a length of 6 mm is provided to be screwed into a screw hole 118 of a metric screw (M3) having an inner diameter of 3 mm.

As the first pipe 116, a commercially available iron pipe having an outer diameter of 8.0 mm and an inner diameter of 7.0 mm is used, and the length is cut to 91 mm.
The second pipe 117 is an iron pipe having an inner diameter of 6.05 mm and a length of 30 mm. A metric screw (M10) having a diameter of 10 mm is formed on the outer periphery from the upper end to a length of 24 mm, and the lower end portion (length: 6 mm) is The outer diameter is finished so that it can be press-fitted into the upper end (inner diameter 7.0 mm) of one pipe 116.

  Next, the second rod-shaped member 105 includes a third pipe 120 and a pin 114. The third pipe 120 is a commercially available stainless steel pipe having an outer diameter of 6.0 mm and an inner diameter of 4.5 mm having a length of 121 mm. It is cut and used. The pin 114 is a tapered pin having an outer diameter of 2.0 mm.

  The third pipe 120 is provided with a vertical slit 121, an upper horizontal slit 122, and a lower horizontal slit 123 as the setting mechanism 106. The vertical slit 121 has a length of 100 mm and is formed along the axis of the third pipe 120. The width of each slit is 3.1 mm.

The upper horizontal slit 122 and the lower horizontal slit 123 are formed so as to extend at right angles in opposite directions from both ends of the vertical slit 121 as shown in FIGS. 12 (a) and 12 (b).
Further, in the vicinity of the end 109 of the third pipe 120, when the boss 111 of the top end indicating member 110 is fitted into the third pipe 120, the pin 114 is made to penetrate the pin hole 115 of the boss 111 in common and the top A pin hole 124 for fixing the end indicating member 110 to the end 109 of the third pipe 120 is formed.

  The support member 108 includes a substrate 107 and a nut member 125. The substrate 107 is formed by using an iron plate having an area of 80 mm × 80 mm and a plate thickness of 2.3 mm. The substrate 107 has a through hole 126 having an inner diameter of 12 mm at the center and through holes 127 having an inner diameter of 5 mm for nailing at four corners.

  As the nut member 125, a commercially available long nut having a length of 31.5 mm having a metric screw (M10) having an inner diameter of 10 mm is used. A distal end portion 128 is formed so as to be press-fitted into the through hole 126 of the substrate 107.

Assembling method of the top end indicating tool First, in the second rod-shaped member 105 shown in FIG. 11, the boss 111 of the top end indicating member 110 is fitted into the end 109 of the third pipe 120, and the pin hole 115 of the boss 111 and the third hole After the positions of the pin holes 124 of the pipe 120 are aligned, the pin 114 is driven into the pin holes 115 and 125, and the top end indicating member 110 is fixed to the third pipe 120.

Next, in the 1st rod-shaped member 104, the lower end of the 2nd pipe 117 is press-fit in the hole 103b of the upper end of the 1st pipe 116, and both are couple | bonded coaxially.
Next, the lower end of the third pipe 120 is inserted from the base end 101 of the second pipe 117 into the hole 103a. While inserting, the top end point 112 is rotated clockwise or counterclockwise to align the position of the screw hole 118 with the position of the vertical slit 121, and then the hexagon socket head cap screw 119 is screwed into the screw hole 118, The tip of the hexagon socket head cap screw 119 is inserted into the vertical slit 121.

  Then, after the third pipe 120 is inserted into the first rod-like member 104 until the hexagon socket head cap screw 119 collides with the upper end of the vertical slit 121, the top end point 112 is turned clockwise a little to FIG. 12 (a). The hexagon socket head cap screw 119 is engaged with the upper lateral slit 122 as shown in FIG.

  Next, in the support member 108, the tip end portion 128 of the nut member 125 is press-fitted into the through-hole 126 of the substrate 107 to integrate them.

Next, the distal end 102 of the first rod-like member 104 is inserted into the screw hole of the nut member 125, and when the male screw portion on the outer periphery of the second pipe 117 reaches the female screw portion of the nut member 125, the top end point 112 is moved clockwise. The second pipe 117 is screwed into the nut member 125 by turning. Then, when the rear end of the hexagon socket head cap screw 119 collides with the nut member 125, the screwing operation is stopped.
In this way, the top end indicating tool 200 shown in FIG. 1 is completed.

Method for Operating the Top End Indicator In the state shown in FIG. 10, the height Hc of the top end point 112 from the substrate 107 is 46.5 mm, which is the minimum. Therefore, when the top end point 112 is slightly turned counterclockwise, the hexagon socket head bolt 119 in the state of FIG.

  Therefore, the top point 112 is pulled up in the direction of arrow A in FIG. When the top end point 112 is slightly turned counterclockwise when the hexagon socket head bolt 119 reaches the lower end of the vertical slit 121, the hexagon socket head bolt 119 is engaged with the lower horizontal slit 123 as shown in FIG. Stop.

  As a result, the second rod-like member 105 is fixed to the first rod-like member 104, the top end indicator 200 is in the state shown in FIG. 13A, and the height Hc of the top end point 112 from the substrate 107 is 146.5 mm.

In the state shown in FIG. 13 (a), when the top end point 112 is further turned counterclockwise, the external thread on the outer periphery of the second pipe 117 moves upward from the nut member 125 and rises to the state shown in FIG. 13 (b). Thus, the height Hc of the top end point 112 from the substrate 107 can be set to a maximum of 162 mm.
In order to set Hc to a height between FIG. 13A and FIG. 13B, the top point 112 may be rotated clockwise or counterclockwise.

In the state shown in FIG. 13 (a), the top end point 112 is slightly rotated in the clockwise direction so that the position of the hexagon socket head cap screw 119 extends vertically from the position of engagement with the upper horizontal slit 122 shown in FIG. 12 (a). By returning to the position of the slit 121, the second bar-shaped member 105 can be slid into the first bar-shaped member 104, and the position of the top end point 112 can be returned to the position shown in FIG.
The same applies to the case shown in FIG.

Using crest pointing device Next, an example of the actual use of the crest pointing device 200.
First, as shown in FIG. 14, a hole 130 having a diameter of 10 mm and a depth of 100 mm is formed in the ground 129 using a concrete drill.

Next, an iron pipe 131 having an outer diameter of 10 mm and an inner diameter of 9 mm is driven into the hole 130. The first rod-like member 104 of the top end indicating tool 200 shown in FIG. 10 is inserted into the pipe 131.
A nail (for concrete) 132 is inserted into the through hole 127 of the substrate 107 and driven.

Here, the laser beam indicating the top level L is emitted horizontally.
As shown in FIG. 13A, the top point 112 is pulled up. Then, the height of the top end point 112 is finely adjusted as shown in FIG. 13B so that the laser beam is received by the upper surface of the laser detection axis 113 or the top end point 112.

  Next, as shown in FIG. 10, the second rod member 105 is pushed into the first rod member 104 to temporarily lower the top end point 112. Next, it waits for completion of preliminary work such as rebar fastening processing and concrete supply hose installation work.

  When the preliminary work is completed and it is necessary to instruct the top for placing concrete, the second bar 105 is pulled out from the first bar 104 as shown by the broken line in FIG. Return to the adjusted height.

Next, the concrete is cast and leveled so that the top surface of the top end point 112 and the surface of the concrete are in the same plane L as shown in FIG. When the concrete placement is completed, the laser detection shaft 113 is pulled out from the top end point 112 and removed.
In this way, a concrete floor having a high flatness with the top end point 112 as a reference can be obtained.

[Other Embodiments]
As another embodiment, another top end indicating tool can be configured by replacing the board 107 and the nut member 125 of the second embodiment with the square pile member 9 and the fixing screw portion 3 of the first embodiment, respectively. it can.

In this case, after the square pile member 9 is driven into the ground, the assembly of the first rod-like member 104 and the second rod-like member 105 is inserted into the fixing screw portion 3 and assembled.
In addition, the usage method of this top end indicating tool is based on 2nd Embodiment.

DESCRIPTION OF SYMBOLS 1 Laser detection axis | shaft 2 Top end instruction | indication member 2a Top end point 2b Boss 2c Insertion hole 3 Fixing screw part 4 Pull-out length setting member 4a 2nd pipe 5 Bar-shaped member 5a 1st pipe 6 Cap 7 Compression spring 8 Cap 9 Square pile member 9a Tip 9b Base end 10 Upper lateral slit 11 Lower lateral slit 12 Male thread portion 13 Locking claw 14 Permanent magnet 15 Reinforcing bar 16 Countersunk screw 17 Vertical slit 18 Screw hole 19 Vertical hole 20 Fixed screw insertion portion 21 Locking convex portion 22 Locking groove 23 Laser detecting section 24 Notched groove 25 Notched section 26 Driver 27 Insertion piece 28 Guide 29 Laser detecting section 30 Fixing screw 31 Ground 32 Crushed stone layer 33 Concrete slab 100, 200 Top end indicating tool 101 Base end 102 Tip 103a, 103b Hole 104 First rod member 105 Second rod member 106 Setting mechanism 107 Substrate 108 Support member 109 End 110 Top end indicating member 111 Boss 112 Top end point 113 Laser detection shaft 114 Pin 115 Pin hole 116 First pipe 117 Second pipe 118 Screw hole 119 Hexagon socket head bolt 120 Third pipe 121 Vertical slit 122 Upper horizontal slit 123 Lower lateral slit 124 Pin hole 125 Nut member 126 Through hole 127 Through hole 128 Front end 129 Ground 130 Hole 131 Pipe 132 Nail

Claims (6)

  A rod-shaped pile member having an elongated hole formed coaxially from the proximal end to the distal end, a rod-shaped member accommodated in the hole so as to be able to be inserted and removed from the proximal end, and a pull-out length of the rod-shaped member from the proximal end A setting member to be set, and the bar-shaped member is provided with a top end indicating member at an end portion exposed from the hole.   The setting member is coaxially accommodated in the hole and accommodated coaxially so that the rod-shaped member can be inserted and removed, and the axial movement of the rod-shaped member and the rotation of the shaft center when the rod-shaped member is pulled out of the cylindrical member 2. A first lock mechanism for releasably fixing the screw, a male screw portion having a male screw provided on an outer periphery of the cylindrical member, and a fixing screw portion having a female screw provided in the hole and screwed into the male screw. Zenith indicator.   The top end indicating tool according to claim 2, wherein the setting member includes a biasing member that biases the rod-shaped member in the pull-out direction.   The top setting tool according to claim 2 or 3, wherein the setting member includes a second lock mechanism that fixes the axial movement of the rod-shaped member so as to be openable when the rod-shaped member is accommodated to a predetermined depth of the cylindrical member.   The top end indicating tool according to any one of claims 2 to 4, wherein the rod-shaped member is fixed in a rotational direction about the axis with respect to the cylindrical member.   A first rod-shaped member having an elongated hole formed coaxially from the proximal end to the distal end; a second rod-shaped member accommodated in the hole so as to be able to be inserted into and removed from the proximal end; and a second rod-shaped member from the proximal end A setting mechanism for setting a pull-out length; and a support member having a substrate that vertically supports the first rod-shaped member, and the second rod-shaped member has a top end at an end portion exposed from the hole. A crest indicator having an indicating member.