JP6709461B2 - Height adjustment aid - Google Patents

Description

The present invention relates to a height adjustment auxiliary tool used for adjusting the height of anchor bolts or the like that are erected on a foundation concrete for a house.

As shown in Patent Document 1, the anchor bolt is installed in a central mounting hole of a plate-shaped anchor bolt support member that is fixed to both upper ends while straddling between a pair of mold rows that are erected opposite to each other. It is attached in a state where it is adjusted, and is tightened and fixed with bolts. When installing this anchor bolt, connect a rod-shaped height adjustment tool to the upper end of the anchor bolt, hold it by hand and stack it, and irradiate the laser beam from the laser survey instrument on the light receiving part positioned on the height adjustment tool. By doing so, the height is adjusted. After adjusting the height, the positioned anchor bolt is held by hand, only the height adjuster is removed and placed horizontally, and the anchor bolt is tightened with a screw to be fixed to the anchor bolt support member.

However, if the height adjuster is adjusted to the upper end of the heavy anchor bolt while being held by hand, the work is unstable and the accuracy of height adjustment tends to vary. In addition, after adjusting the height, it is a two-step operation of removing only the height adjusting tool while holding the anchor bolt by hand and tightening the bolt by hand to attach the anchor bolt to the anchor bolt support member. Therefore, there is a problem that the burden of height adjustment work is heavy, and at a work site where heights of many anchor bolts are adjusted, heavy work must be continued for a long time.

On the other hand, a cloth foundation concrete is placed between a pair of molds, and as for the height of this concrete, for example, a top end jig as shown in FIG. 10 is used. This top-end jig is fixed to the rebar located between the molds at the bottom end fixing part, and the top height is determined by inserting a screwdriver into the groove provided at the top end and rotating. It is designed to be used. The height of the top end and the height of the upper end of the anchor bolt have predetermined values. However, conventionally, the height of the top end and the height of the anchor bolt have been measured by separate works, so the relationship between the two has not been effectively utilized for the work, and the work is wasted.

Utility model registration No. 3077029

The present invention is intended to solve the above problems, and an object thereof is to provide a height adjustment assisting tool that can easily and accurately adjust the height of an anchor bolt that is erected on a foundation concrete for a house. Another object of the present invention is to provide a height adjustment auxiliary tool that can easily adjust the top height of the foundation concrete and can be related to the height adjustment of the anchor bolt.

In order to achieve the above object, a structural feature of the present invention is that a fixing portion for removably fixing a long rod-shaped height adjusting tool on one end side of a rod-shaped main body in a longitudinal direction. Is provided, and a magnet portion capable of adsorbing and suspending the end portion of the anchor bolt is provided on the other end side of the rod-shaped main body.

In the invention configured as described above, the long rod-shaped height adjuster fixed to the fixing portion of the rod-shaped main body of the height adjustment aid is arranged in a vertical state with the rod-shaped main body facing downward, The anchor bolt is suspended by attracting the end of the anchor bolt to the magnet portion provided on the other end side. The anchor bolts suspended in this way were inserted between a pair of mold rows that were erected facing each other at the site where the foundation concrete for a house was to be placed. The height of the anchor bolt is determined by adjusting the height of the anchor bolt to the specified height position. Furthermore, anchor bolts of fixed height are fixed to the anchor bolt support members mounted between the upper ends of the pair of mold rows by bolts or the like by hand, and then the height adjuster is removed from the anchor bolts. With this, the anchor bolt is fixed to the anchor bolt support member in a state where the height of the anchor bolt is adjusted. As a result, according to the present invention, the work of positioning the height of the anchor bolt can be performed more easily and more accurately than in the past.

Further, in the present invention, the fixing portion includes an upper insertion hole for inserting a height adjusting tool extending in the longitudinal direction from one end side of the rod-shaped main body, and a plurality of peripheral members surrounding the upper insertion insertion hole of the rod-shaped main body. A displacement part consisting of a plurality of mounting pieces separated by a slit extending in the longitudinal direction at a location and elastically deformable in the axial direction, and a cylinder fitted on the outer peripheral side of the displacement part and tightening the displacement part from the outer peripheral side. It is preferable that it is configured by a tightening member having a shape. According to the present invention, the tip end side of the height adjuster is inserted into the upper insertion hole of the fixed part, and the displacement part is tightened from the outside of the displacement part by the tightening member, so that the height adjuster is attached to the displacement part. It can be easily and firmly fixed, and the height adjusting aid can be easily removed from the height adjusting tool.

Further, in the present invention, the magnet portion is disposed on the outer peripheral surface of the rod-shaped main body, and the rod-shaped main body can be inserted with the tip end portion of the top end jig for determining the top end position of the concrete on the other end side. In addition to providing a lower insertion hole, a pair of clamping pieces extending in the axial direction of the rod-shaped body are provided on both sides of the lower insertion hole on the other end side, and the pair of clamping pieces are near the tip of the top end jig. It may be inserted between a pair of blade portions provided at a position so that the blade portions can be locked. As a result, the tip of the top end jig can be inserted into the lower insertion hole and the tip blade can be sandwiched by the sandwiching piece without being obstructed by the magnet portion, and the height adjuster can be rotated. Can be used to easily determine the crown height.

Further, in the present invention, it is preferable that the projecting surface of the magnet portion is a flat surface perpendicular to the longitudinal direction of the rod-shaped body, and the flat surface is flush with the bottom surface of the lower insertion hole. As a result, the height of the flat surface of the magnet matches the top height when determining the top height, so the tip height of the anchor bolt is adjusted based on this top height. The height of the anchor bolt can be easily and accurately determined by suspending the anchor bolt on the magnet portion after that.

In the present invention, the long rod-shaped height adjusting tool fixed to the fixing portion of the rod-shaped body is held by hand, and the end portion of the anchor bolt is attracted to the magnet portion provided on the other end side of the rod-shaped body and suspended. Since the height of the anchor bolt can be determined in this state, the work of adjusting the height of the anchor bolt can be performed more easily and accurately than in the conventional case. Further, according to the present invention, since the flat surface of the magnet portion is flush with the bottom surface of the lower insertion hole, the height of the tip of the anchor bolt based on the height of the top can be adjusted by the height adjuster. You can easily decide.

It is a partially broken front view showing a height adjustment assisting tool which is one embodiment of the present invention. It is a right view which shows a height adjustment auxiliary tool. It is a top view which shows a height adjustment auxiliary tool. It is a bottom view which shows a height adjustment auxiliary tool. It is a partially broken front view which shows the base of a height adjustment auxiliary tool. It is a top view which shows the base of a height adjustment auxiliary tool. It is (a) a partially fractured front view, (b) plan view, and (c) bottom view showing a tightening member of a height adjustment aid. It is explanatory drawing explaining the state which attached the height adjustment tool to the height adjustment auxiliary tool, and hung the anchor bolt. It is (a) front view and (b) bottom view which show a height adjustment tool. It is the (a) front view and the (b) top view which show a top end jig. It is explanatory drawing seen from the side surface explaining the state which attached the height adjustment auxiliary tool to the top end jig. It is explanatory drawing seen from the bottom face side explaining the state which mounted the height adjustment auxiliary tool on the top end jig. It is explanatory drawing for demonstrating the adjustment work of the crown height of the foundation concrete using the height adjustment tool to which the height adjustment auxiliary tool was attached. It is explanatory drawing for demonstrating the height adjustment work of the anchor bolt using the height adjustment tool with which the height adjustment auxiliary tool was attached. It is explanatory drawing explaining the relationship of (I) reference|standard height by a height adjuster, (II) crown height, and (III) anchor bolt height.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are partially cutaway front views, right side views, and plan views of a height adjustment assisting tool 10 used for adjusting the top height of concrete and the height of anchor bolts, which is an embodiment. And the bottom view. In addition, in the following description, the vertical and horizontal directions of the height adjustment assisting tool 10 are aligned with the vertical and horizontal directions of FIG.

The height adjustment assisting tool 10 includes a rod-shaped rod-shaped main body 11 made of resin, and a resin-made cylindrical fastening member 26 that covers the outer peripheral surface on one end side thereof. As shown in FIGS. 5 and 6, the rod-shaped main body 11 has a cylindrical lower portion 12 and an upper portion 19 having a diameter smaller than that of the cylindrical lower portion 12 coaxially extending from an upper surface 12 a of the lower portion 12. And a cylindrical magnet mounting portion 15 integrally provided on the right outer peripheral surface 12c side of the lower side portion 12 with their axes aligned. A lower insertion hole 13 is provided in the center of the bottom surface 12b of the lower portion 12 so as to be recessed in a cylindrical shape in the axial direction, and extends to almost the middle of the lower portion 12 in the axial direction. Further, the lower side portion 12 is integrally provided with a pair of holding pieces 14 extending in the axial direction on both left and right sides of the bottom surface 12b. The sandwiching piece 14 is a thick plate that is curved in an arc shape with a central angle of approximately 70° along the outer peripheral edge of the bottom surface 12b and has a predetermined thickness in the radial direction.

The upper surface of the magnet mounting portion 15 is flush with the upper surface 12a of the lower portion 12, and the axial length thereof is slightly less than half the axial length of the lower portion 12. The magnet mounting portion 15 is provided with a mounting hole 16 that extends coaxially from the bottom surface 15 a side, and a cylindrical magnet 17 that constitutes a magnet portion together with the magnet mounting portion 15 is inserted and fixed in the mounting hole 16. It has become. The magnet 17 is a neodymium magnet having a strong magnetic force. As shown in FIG. 1, the magnet 17 slightly projects from the bottom surface 15 a of the magnet mounting portion 15, and the projecting surface 17 a of the magnet 17 is flush with the bottom surface 13 a of the lower insertion hole 13.

The upper portion 19 has a slightly tapered cylindrical shape on the upper end side, and is coaxially provided with a cylindrical upper insertion hole 21 extending axially from the center of the upper end surface to the vicinity of the bottom. The bottom surface 21a of the upper insertion hole 21 is provided with a cross-shaped insertion hole 21b into which the head of the driver portion 33 of the height adjuster 30 described later is inserted. Further, the upper portion 19 is provided with four narrow slits 22 that are notched in the up-down direction at front and rear and left and right positions surrounding the upper insertion hole 21 and reach the vicinity of the bottom surface 21a of the upper insertion hole 21. The upper portion 19 is provided with four attachment pieces 24 which are separated from each other by four slits 22 and which extend vertically in the axial direction. The displacement portion 23 is configured by the four mounting pieces 24 separated by the four slits 22. Each mounting piece 24 has an inclined portion 24a whose outer periphery on the tip side is slightly inclined toward the tip, and a thread groove 25 is formed on the outer peripheral surface below the inclined portion 24a along the axial direction. .. A fastening member 26, which constitutes a fixed portion together with the upper portion 19, is fitted on the outer peripheral side of the displacement portion 23.

As shown in FIG. 7, the tightening member 26 is a resin-made thin-walled cylindrical shape, and is a cone that is slightly inclined in the axial direction toward the upper end whose upper axial length occupies approximately 1/3 of the entire length. A trapezoidal inclined cylinder portion 27 and a lower cylindrical fitting cylinder portion 28 are integrally provided. The inner diameter on the upper end side of the inclined tubular portion 27 is smaller than the outer diameter of the thread groove 25 portion of the upper portion 19. The fitting tubular portion 28 has an outer diameter that is the same as the outer diameter of the lower portion 12, an inner diameter that is equal to the outer diameter of the upper portion 19, and that is screwed into the thread groove 25 of the upper portion 19 on the inner peripheral surface. The screw hole portion 29 is provided. The tightening member 26 is attached to the upper portion 19 by fitting it into the upper portion 19 and screwing the screw hole portion 29 into the screw groove 25.

Next, attachment of the height adjustment assisting tool 10 to the height adjusting tool 30 will be described with reference to FIGS. 8 and 9. As shown in FIG. 9, the height adjuster 30 is a straight rod-shaped member, and is a hollow rectangular column-shaped long rectangular rod portion 31 made of aluminum and is rotatably inserted into the rectangular rod portion 31. A cylindrical middle rod portion 32 and a small-diameter driver portion 33 integrally attached to the lower end of the middle rod portion 32 are coaxially provided, and a cylindrical grip portion 34 is provided at the upper end of the middle rod portion 32. It is provided. A spirit level 35 is slidably attached to the inner end side of the square rod portion 31. Further, a light receiving portion 51 of a laser surveying instrument 50 described later can be attached to the square rod portion 31. With the driver portion 33 of the height adjuster 30 inserted into the upper insertion hole 21 of the upper portion 19 and the head inserted into the insertion hole 21b, the screw hole of the fitting tubular portion 28 of the tightening member 26 is inserted. The part 29 is screwed into the thread groove 25 and rotated. As a result, the inclined tubular portion 27 can deform the four mounting pieces 24 of the upper portion 19 by applying a pressing force inward in the radial direction, and the displacement portion 23 is reduced in diameter.

As a result, the driver portion 33 is tightened by the four mounting pieces 24, and the height adjuster 30 is firmly fixed to the upper portion 19. As described above, according to the present embodiment, the tip end side of the driver portion 33 of the height adjuster 30 is inserted into the upper insertion hole 21 of the rod-shaped main body 11 of the height adjustment assisting tool 10 from the outside of the displacement portion 23. By tightening the upper part 19 with the tightening member 26, the height adjuster 30 can be easily and firmly fixed to the upper part 19, and the height adjuster 30 can be easily removed from the upper part 19. is there. Further, as shown in FIG. 8, the anchor bolt 37 is firmly fixed to the magnet 17 fixed to the magnet mounting portion 15 at the upper end side and is hung.

Next, the attachment of the height adjustment assisting tool 10 fixed to the height adjusting tool 30 to the top end jig 40 used for adjusting the top end height of concrete will be described. As the top end jig 40, for example, one shown in FIG. 10 is generally used. The top-end jig 40 is made of resin and has a long rod-shaped base portion 41, a round-bar-shaped adjustment portion 43 that is screwed to the upper end side of the base portion 41 and is vertically movable, and a lower end of the base portion 41. An annular reinforcing bar attachment portion 46 that is fixed is provided. The base portion 41 is a mounting portion 42 having an upper half and a screw hole coaxially extending in the axial direction.

The adjusting portion 43 is provided with a pair of blade portions 44 that spread radially outward symmetrically on the outer peripheral surface that is separated from the upper end by a predetermined dimension, and a screw portion that extends in the axial direction on the lower outer peripheral surface of the blade portion 44. 45 is provided. The adjustment portion 43 has a first reference surface whose upper end is aligned with the top of the concrete, and an attachment groove 43a into which the head of the driver portion 33 can be fitted is provided on the upper end surface. The blade portion 44 represents a second reference surface that serves as a reference for pouring the leveler. The reinforcing bar attaching portion 46 is integrally attached to one location on the lower end side of the base portion 41 in parallel with the axial direction, extends in a semi-circular shape, and has a locking inner claw 47a inside the tip end thereof. A second tightening piece 48 is provided on the opposite side of the first tightening piece 47 and extends in a semi-circular shape and has a locking outer claw 48a on the outer side of the tip. The reinforcing bar attaching portion 46 is fitted around the reinforcing bar by the first tightening piece 47 and the second tightening piece 48, and the locking inner claw 47a is locked to the locking outer claw 48a, so that the reinforcing bar is firmly fixed to the reinforcing bar. Tightened and fixed.

As shown in FIGS. 11 and 12, the base portion 41 of the top end jig 40 that is vertically fixed to a reinforcing bar (not shown) is located below the height adjustment assisting tool 10 that is fixed to the height adjusting tool 30. By inserting the pair of sandwiching pieces 14 between the pair of blade portions 44 that are inserted into the lower insertion hole 13 provided in the portion 12 and are in contact with the bottom surface of the lower portion 12, the blade portions 44 are sandwiched by the sandwiching pieces 14. Locked in. Therefore, by rotating the height adjuster 30, the blade portion 44 also rotates integrally. As a result, the top end height of the top end jig 40 is easily adjusted by moving the adjustment part 43 up and down.

Next, an example of setting the top end height by the top end setting jig 40 using the height adjustment aid 10 will be described with reference to FIGS. 13 and 15. A top end jig 40 is fixed by a reinforcing bar mounting portion 46 to the upper end side of the reinforcing bar 2 erected between a pair of formwork rows 1 which are erected opposite to each other at the site of placing the basic concrete for a house. To be done. The base portion 41 of the top end jig 40 is inserted into the lower insertion hole 13 of the height adjustment assisting tool 10 fixed to the height adjusting tool 30, and the pair of blade portions 44 are sandwiched between the sandwiching pieces 14. The position of the light receiving portion 51 of the height adjuster 30 is adjusted in advance so as to be a reference height K, for example, 250 mm which is the height of the tension, and with this reference height K as a reference, the crown height is set. For example, they are aligned so that the position K1 is 120 mm below the reference height K. The relationship between the reference height K and the top height K1 by the light receiving portion 51 attached to the height adjuster 30 and the adjustment by the laser survey instrument 50 are schematically shown in FIG. In this state, by rotating the height adjuster 30, the adjusting portion 43 of the top end jig 40 is moved up and down, and the height is adjusted by the laser surveying instrument 50 until the light receiving portion 51 is reached. The position is decided.

Next, an example of setting the height of the anchor bolt using the height adjustment aid 10 will be described with reference to FIGS. 14 and 15. The light receiving unit 51 is aligned with the position K2 corresponding to the upper end position of the anchor bolt 37 with reference to the position K1 corresponding to the top end height of the height adjuster 30. The relationship between the crown height K1 and the anchor bolt height K2 by the light receiving portion 51 attached to the height adjuster 30 and the adjustment by the laser surveying instrument 50 are schematically shown in FIG. With the anchor bolt 37 inserted vertically into the mounting hole 5 in the center of the plate-shaped anchor bolt support member 3 fixed by the bolt 4 between the upper ends of the pair of mold rows 1, the height adjusting tool 30 and Holding the anchor bolt 37 by hand, the magnet 17 provided on the other end side of the rod-shaped main body 11 attracts the end portion of the anchor bolt 37 and suspends it.

In this state, while the height adjuster 30 and the anchor bolt 37 are moved up and down, the height is adjusted using the laser surveying instrument 50 to the position K2 of the light receiving portion 51 of the height adjuster 30. 37 is set to the specified height. After the height is determined, the anchor bolt 37 is positioned and fixed to the anchor bolt support member 3 with the bolt 38, and then the height adjusting tool 30 and the height adjusting auxiliary tool 10 are removed from the anchor bolt 37, so that the height is increased. The adjusted anchor bolt 37 is fixed to the anchor bolt support member 3. As a result, according to this embodiment, the positioning work of the anchor bolt 37 can be performed more easily and more accurately than in the conventional case.

In addition, in the above embodiment, the height adjustment assisting tool 10 is provided with the pair of holding pieces 14 on the lower side, but it is also possible to omit this, and the upper side does not have the above-mentioned blade portion. It can also be applied to a jig for edge setting. Further, in the above embodiment, the height adjustment assisting tool 10 is provided with the magnet mounting portion 15 on the outer peripheral side of the lower side portion 12, but instead of this, the magnet mounting portion is provided on the bottom portion of the lower side portion. Is also possible. Further, in the above-described embodiment, in the height adjustment assisting tool 10, the protruding surface 17a of the magnet 17 is flush with the bottom surface 13a of the lower insertion hole 13, but the invention is not limited to this.

Further, the height adjuster 30 shown in the above embodiment is not limited to that shown in FIG. 9, but a thin round bar is attached to one end side of a long bar, and the round bar has an upper insertion hole 21. It may be one that can be inserted and fixed. Further, the anchor bolt support member 3 shown in the above embodiment is not limited to the one shown in FIGS. 13 and 14, but is supported by one of the molds and has a horizontal position in addition to the height of the anchor bolt. Also, the structure may be adjustable. In addition, the structure of each part of the height adjustment assisting tool shown in the above embodiment is an example, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10... Height adjustment auxiliary tool, 11... Rod-shaped main body, 12... Lower part, 13... Lower insertion hole, 14... Clamping piece, 15... Magnet mounting part, 17... Magnet, 19... Upper part, 21... Upper insertion Fitting hole, 22... Slit, 23... Displacement part, 24... Mounting piece, 25... Screw groove, 26... Tightening member, 29... Screw hole part, 30... Height adjusting tool, 33... Driver part, 37... Anchor bolt , 40... Top end jig, 41... Base part, 43... Adjusting part, 44... Blade part, 51... Light receiving part.

Claims (4)

On one end side of the resin rod-shaped main body, there is provided a fixing portion for removably fixing the long rod-shaped height adjusting tool aligned on the one end side in the longitudinal direction, and on the other end side of the rod-shaped main body. A height adjustment assisting tool, which is provided with a magnet portion capable of adsorbing and hanging an anchor bolt at an end portion. The fixing portion is an upper insertion hole for inserting the height adjusting tool extending in the longitudinal direction from one end side of the rod-shaped body, and a plurality of peripheral portions surrounding the upper insertion hole of the rod-shaped body. And a displacement portion made of a plurality of mounting pieces separated by a slit extending in the longitudinal direction and elastically deformable in the axial direction, and fitted on the outer peripheral side of the displacement portion to tighten the displacement portion from the outer peripheral side. The height adjustment assisting tool according to claim 1, wherein the auxiliary tool is a tubular tightening member. The magnet portion is disposed on the outer peripheral surface of the rod-shaped main body, and the rod-shaped main body has a lower end fitting into which the tip of a top end jig for determining the top end position of concrete on the other end side can be inserted. A pair of clamping pieces extending in the longitudinal direction of the rod-shaped main body is provided on both sides of the lower insertion fitting hole on the other end side, and the pair of clamping pieces are the tips of the top end jig. The height adjustment assisting tool according to claim 1 or 2, wherein the height adjusting assisting tool is inserted between a pair of blades provided in the vicinity of the blade and can be locked to the blades. The protruding surface of the magnet portion is a flat surface perpendicular to the longitudinal direction of the rod-shaped body, and the flat surface is flush with the bottom surface of the lower insertion hole. The height adjustment aid according to item 3.

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