JP7154500B2 - Beam formwork bottom bracket - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam form bottom support that supports the bottom of a beam form that horizontally protrudes from the top of a wall form used in constructing a concrete structure.

In concrete construction, when a beam or the like overhangs a wall or the like, a formwork shoring is used to support the bottom of the beam formwork or the like. When the overhang is small, general formwork shoring interferes with the outer thick (butter) material of the wall formwork, making it difficult to install vertically. In order to solve such pipe support problems, a formwork bottom holder is used as a formwork shoring that supports the bottom of a beam formwork by hooking one end to two horizontal thick members of a wall formwork or the like. has been proposed (see, for example, Patent Document 1).

The formwork bottom receiving tool described in Patent Document 1 includes a main body having a hooking portion (locking portion in Patent Document 1) that hooks on a horizontal beam provided on the side mold, and a top and bottom support that is screwed to the main body. A formwork support part (support plate in Patent Document 1) that moves and supports the beam formwork above the main body, and a screw that has an engaging part that engages with a wrench for rotating operation at the lower end below the main body. It consists of a rod.

Utility Model Registration No. 3120107

However, in the beam formwork bottom support described in the above-mentioned Patent Document 1, by rotating the screw rod, the screw rod moves up and down with respect to the main body that is screwed (screwed), and the formwork above the screw rod Since the beam formwork is supported by the support part, when the screw rod is tightened while the formwork support part at the top of the screw rod is in contact with the bottom part of the beam formwork, the screw rod and the female thread of the main body are screwed together (screwed). Since it is only mated, it is likely to rattle, and the formwork support portion on the top of the screw rod is likely to shift outward. Therefore, there is a problem that it is difficult to fasten the formwork support portion in a state of reliably abutting against the bottom portion of the beam formwork.

In addition, since the hooking portion hooked to the horizontal bar (horizontal end thick material (horizontal bar)) is configured in a plate shape, the hooking portion tends to rotate as the screw rod is tightened. Since the screw rod is long, it is heavy, and there is also the problem that it is difficult to attach it to a horizontal rail.

Therefore, the present invention has been made in view of such problems. To provide a beam form bottom support that makes it difficult for a locking part to rotate, reduces weight, and improves mounting workability.

In order to solve the above problems, the beam formwork bottom supporter according to the present invention is a beam formwork bottom supporter for supporting the bottom of the beam formwork projecting from the wall formwork. It has a side plate portion extending in a direction perpendicular to the back plate portion from each of the left and right sides of the plate portion, and on the side opposite to the back plate portion side of the side plate portion on both the left and right sides, there is a horizontal edge for fixing the wall formwork. It has a receiving tool body provided with a hooking part that is hooked to a material (horizontal beam), and an upper plate part and a lower plate part provided on the back plate part side of the receiving tool body. A guide body having a pipe body insertion hole and a male screw body insertion hole coaxially formed on the upper plate part and the lower plate part, respectively, and vertically movably inserted into the pipe body insertion hole of the upper plate part of the guide body. a pipe body that is fitted and has a female thread formed therein; a formwork support part that is provided at the upper end of the pipe body and supports the bottom of the beam formwork; and a male screw on the lower plate of the guide body. It is rotatably supported in the body insertion hole so as not to fall off, and the male threaded portion is screwed into the female threaded portion of the pipe body. and a male screw body for vertically moving the pipe body.
In addition, in the beam formwork bottom support according to the present invention, the back plate portion of the support body has a wall at a position lower than the guide body and the male thread body at the height of the hooking part. It is also characterized in that a support main body fixing hole is formed through which at least a screw portion of a formwork binding fitting for fastening the horizontal end thick member is inserted into the formwork so that the support main body can be fixed to the horizontal end thick member. and
Further, in the beam formwork bottom support according to the present invention, the formwork support part is characterized in that the upper end of the pipe body is joined at a position eccentric from the center of the formwork support part.

In the beam formwork bottom receiver according to the present invention, the height adjustment mechanism of the formwork support part that supports the bottom part of the beam formwork is composed of a pipe body and a male thread body, and the formwork support part is provided at the upper end. The pipe body is inserted into and guided by a pipe insertion hole formed in the upper plate of a guide body provided in the receiving body, and the male screw threadedly engaged with the female screw part of the pipe body rotates. It moves up and down (up and down) by
Therefore, the pipe body through which the male threaded body is inserted moves up and down while being guided by the pipe body insertion hole formed in the upper plate portion of the guide body. To surely support the bottom part of a beam form by suppressing the outward displacement of a frame supporting part, and to improve the mounting workability by reducing the weight because a hollow pipe body is raised and lowered. can be done.
In addition, on the left and right side plate portions of the receiver main body, on the side opposite to the back plate portion side, there are provided hook portions that are hooked on two horizontal end thick members (horizontal beams) that fix the wall formwork. Therefore, it is possible to prevent the receiving body from rotating when tightening the male screw body, and in this respect as well, the mounting workability can be improved.

It is a front view at the time of the maximum expansion-contraction of the beam form bottom support of embodiment which concerns on this invention. It is a right side view at the time of the maximum expansion-contraction of the beam form bottom bracket of embodiment which concerns on this invention. (a) and (b) are respectively a plan view and a bottom view of the beam form bottom support of the embodiment according to the present invention. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2; FIG. 5 is a front view showing a state where the bottom of the beam formwork is held by the beam formwork bottom support of the embodiment according to the present invention when the distance from the horizontal scraps to the bottom part of the beam formwork is small. FIG. 10 is a front view showing a state in which the bottom of the beam formwork is held by the beam formwork bottom support of the embodiment according to the present invention when the distance from the horizontal end member to the bottom part of the beam formwork is large. FIG. 10 is a front view showing a state in which the formwork supporting portion is rotated to support the bottom of the beam formwork in the beam formwork bottom support of the embodiment according to the present invention when the beam formwork protrudes with respect to the wall formwork by a large amount; be. Fig. 10 is a front view showing the shape of the beam form bottom support of the embodiment of the present invention of a horizontal end thick member (horizontal beam) having a square cross section.

An embodiment of the beam formwork bottom support according to the present invention will be described below. It should be noted that the embodiments described below are merely examples of the present invention, and the present invention is not limited to the following embodiments, and can be appropriately modified within the scope of the technical idea of the present invention.

First, a beam form bottom support 1 of an embodiment according to the present invention will be described.
<Configuration of beam form bottom support 1 of the embodiment>
For example, as shown in FIG. 1, the beam formwork bottom support 1 of the embodiment can be used from the wall formwork 21 when constructing a concrete structure using forms such as the wall formwork 21 and the beam formwork 22a to 22c. A support for supporting the bottoms of the overhanging vertical beam molds 22b and 22c, comprising a support body 11, a guide body 12, a pipe body 13, a form support part 14, and a male screw body 15. consists of

In FIG. 1, reference numeral 23 denotes an auxiliary member for vertically setting the vertical beam molds 22b and 22c to the horizontal beam formwork 22a, 24 denotes a vertical beam, and 25 denotes a horizontal end of a single pipe having a circular cross section. 26 is a separator; 27 is a frame support; 25 to the vertical bars 24 and the wall formwork 21.

(Receptacle main body 11)
As shown in FIGS. 2 to 5, the support main body 11 includes a back plate portion 11a and side plate portions 11b extending from the left and right sides of the back plate portion 11a by bending in a direction perpendicular to the back plate portion 11a. 11b and formed in a U-shape in plan view.

On the side opposite to the back plate portion 11a side of the side plate portions 11b, 11b, as shown in FIG. Hooking portions 11b1, 11b1 are provided by notching the upper portion in a substantially semicircular shape according to the outer shape of the lateral end thick member 25 in order to be hooked to the thick members 25,25.

The hooking portions 11b1 and 11b1 are formed by a linear portion 11b11 that abuts at points on the outer peripheral surfaces of the two horizontal end thick members 25 that are aligned in the longitudinal direction (vertical direction), and the upper horizontal end thick member 25. It has a curved portion 11b12 that abuts on the outer peripheral surface of the substantially upper half in a curved line.

In addition, as shown in FIG. 3, at a height approximately in the middle of the linear portion 11b11 of the hooking portion 11b1 of the back plate portion 11a, there is a support body in which a large-diameter hole portion 11a1 and a small-diameter hole portion 11a2 are connected in the vertical direction. A fixing hole 11a3 is formed.

The receiving tool main body fixing hole 11a3 enables the receiving tool main body 11 to be fixed to the two horizontal end thick members 25, 25 by the formwork binding metal fittings 28. Further, the inner diameter R1 of the large diameter hole portion 11a1 is , the outer diameter of the fixing nut 28b to be screwed onto the threaded portion 28a of the formwork binding fitting 28 is made larger than the outer diameter of the fixing nut 28b so that the fixing nut 28b passes through the large diameter hole portion 11a1 without being removed. The inner diameter R2 of the portion 11a2 is smaller than the outer diameter of the fixing nut 28b, and larger than the outer diameter of the threaded portion 28a. It is configured so that

For this reason, the fixture body 11 of the beam formwork bottom part fixture 1 is loosened without removing the fixing nuts 28b of the formwork binding fittings 28 that bind the horizontal end thick members 25 to the vertical beams 24 and the wall formwork 21. can be fixed to the two lateral thick members 25, 25 as shown in FIG.

(Guide body 12)
As shown in FIGS. 1 and 2, the guide body 12 is joined to the back plate portion 11a side of the receiving body 11 at a position higher than the hook portions 11b1 and 11b1 provided on the side plate portions 11b and 11b by welding or the like. It is formed in a U-shape when viewed from the front, having an upper plate portion 12a, a vertical plate portion 12b and a lower plate portion 12c. In this embodiment, the upper plate portion 12a is made longer than the lower plate portion 12c, and the tip of the lower plate portion 12c is joined to the outer surface of the back plate portion 11a by welding or the like. It is joined to the upper end surface of the back plate portion 11a by welding or the like.

As shown in FIG. 5, the upper plate portion 12a and the lower plate portion 12c are coaxially formed with a pipe body insertion hole 12a1 and a male screw body insertion hole 12c1 having a smaller diameter than the pipe body insertion hole 12a1. is doing.

Since the pipe body insertion hole 12a1 formed in the upper plate portion 12a guides the vertical movement of the pipe body 13, the inner diameter thereof is formed to be the same as or slightly larger than the outer diameter of the pipe body 13. there is

On the other hand, the inner diameter of the male screw body insertion hole 12c1 formed in the lower plate portion 12c is sufficient if the male screw body 15 is rotatably inserted therein. It is formed slightly larger than the outer diameter.

(pipe body 13)
The pipe body 13 has a formwork support portion 14 which is welded or the like to the upper portion thereof, and is a tubular body which is inserted into the pipe body insertion hole 12a1 of the upper plate portion 12a of the guide body 12 so as to be vertically movable. , and a cylindrical large-diameter portion 13a and a small-diameter portion 13b provided below the large-diameter portion 13a. A female threaded portion 13b1 that is screwed into the male threaded portion 15a1 of the screw body 15 is formed.

(Form support part 14)
As shown in FIGS. 2 and 4, the formwork support part 14 is provided eccentrically above the large-diameter cylindrical part 13a of the pipe body 13, and is in contact with the vertical beam forms 22b, 22c, the auxiliary member 23, etc. Supporting the bottom of the formwork 22a, the pipe body 13 and the formwork support part 14 are joined to the flat support plate part 14a, the back side of the support plate part 14a, and the outer peripheral surface of the large-diameter cylindrical part 13a of the pipe body 13. It is composed of large and small triangular ribs 14b and 14c that reinforce the connection with the .

As shown in FIGS. 4(a) and 4(b), the support plate portion 14a is fixed to vertical beams 22b and 22c and auxiliary members 23 with which the support plate portion 14a abuts with nails, screws, or the like. A screw hole 14a1 is provided.

(Male screw body 15)
As shown in FIG. 5, the male threaded body 15 includes a bolt body 15a having a male threaded portion 15a1 to be screwed into a female threaded portion 13b1 of the small diameter cylindrical portion 13b of the pipe body 13 and a head portion 15a2. A nut body 15b that is fixed to the male threaded portion 15a1 by welding or screws (not shown), and sandwiches the lower plate portion 12c of the guide body 12 with the head portion 15a2 of the bolt body 15a located outside the guide body 12; It is rotatably supported in the male screw body insertion hole 12c1 of the lower plate part 12c of the guide body 12 so as not to fall off. ).

For this reason, although not shown, the head 15a2 of the bolt body 15a is formed with a fitting portion into which the tip end of the rotating shaft of an impact driver (not shown) can be fitted. Washers 15c are provided between the head portion 15a2 of the bolt body 15a and the lower plate portion 12c of the guide body 12 and between the nut body 15b and the lower plate portion 12c of the guide body 12, respectively. .

<How to use the beam form bottom support 1 of the embodiment>
Next, a method of using the beam formwork bottom support 1 of the embodiment configured as described above will be described. Before using the beam formwork bottom support 1, it is preferable to reversely rotate the bolt 15a of the male screw 15 in advance to lower the pipe 13 screwed to the male screw 15a1. Further, since the pipe body 13 and the formwork support portion 14 are joined together, the pipe body 13 can be moved by rotating the formwork support portion 14 by hand instead of rotating the bolt body 15a of the male screw 15 in the reverse direction. Reverse rotation may be performed to lower the pipe body 13 .

(Supports the bottom of beam formwork 22b, etc., which has a large distance from the two horizontal end thick members 25, 25 to the wall formwork 21 and has a moderate amount of protrusion (extension amount) from the wall formwork 21. if you do)

In this case, first, the worker hooks the hooking portions 11b1 of the side plate portions 11b, 11b of the receiver main body 11 to the two lateral end thick members 25, 25 arranged in the vertical direction, and then the back plate portion. A fixing bolt may be passed through the receiving body fixing hole 11a3 of 11a and fixed to the two horizontal end thick members 25, 25 by a nut. The formwork binding fittings 28 which have already bound the two horizontal end thick members 25, 25 to the vertical beam 24 and the wall formwork 21 are utilized.

That is, the inner diameter R1 of the large-diameter hole portion 11a1 formed in the fixing hole 11a3 of the back plate portion 11a of the receiving device main body 11 is equal to that of the fixing nut screwed onto the threaded portion 28a of the frame binding fitting 28. 28b, the fixing nut 28b is passed through the large-diameter hole portion 11a1 without removing it, and then the support main body 11 is pushed down to insert the formwork binding fitting 28 into the small-diameter hole portion 11a2 of the back plate portion 11a. After moving the screw portion 28a, the fixing nut 28b is tightened.

As a result, the support body 11 of the beam form bottom support 1 can be fixed to the two horizontal end thick members 25, 25 without removing the fixing nuts 28b while using the formwork binding fittings 28. .

Next, the operator inserts the rotating shaft portion of an impact driver (not shown) into the fitting portion of the head portion 15a2 of the male threaded body 15 to rotate the male threaded portion 15a1, thereby opening the large diameter cylinder of the pipe body 13. The formwork support part 14 provided on the upper part of the part 13a abuts on the beam formwork vertical plywood 22b, 22c and the lower surface of the auxiliary material 23, which constitute the bottom part of the beam formwork, and then lifts the pipe body 13 until it can be firmly supported. Let

When the pipe body 13 through which the male threaded body 15 is inserted rises, it rises while being guided by the pipe body insertion hole 12a1 formed in the upper plate portion 12a of the guide body 12 as shown in FIG. Therefore, even when the form support part 14 abuts against the vertical plywoods 22b, 22c for beam form forming the bottom of the beam form and the lower surface of the auxiliary material 23 and is further tightened, the gap between the male threaded body 15 and the nut body 15b does not increase. , the pipe body 13 is prevented from bending outward, and the form support part 14 can reliably support the bottom of the beam form.

Also, in the case of the beam formwork bottom bracket in the case where the bracket main body fixing hole 11a3 of the back part 11a is not formed (Fig. 2), the bracket main body can be fixed simply by hooking the hooking part to the horizontal end thick member. In order to support the bottom of the beam form without fixing with bolts or screws, etc., the eccentric distance from the fixing point of the support body to the wall form to the pipe body 13 that supports the bottom of the beam form is It is the distance from the cross-sectional center of the horizontal end thick member, which is the center of the pipe body 13, to the cross-sectional center of the pipe body 13.

On the other hand, in the beam formwork bottom part supporter 1 of the embodiment, the supporter main body fixing hole 11a is formed in the back plate part 11a so that it can be fixed to the formwork by the formwork binding fittings 28 . That is, since the back plate portion 11a of the support body 11 is fixed to the two lateral end thick members 25, 25 by means of the fixing nuts 28b screwed onto the screw portions 28a of the formwork binding fittings 28, the wall mold is The eccentric distance from the fixing point of the support body 11 to the frame 21 to the pipe body 13 that supports the bottom part of the beam form is the distance from the outer surface of the back plate part 11a to the center of the cross section of the pipe body 13, and the support is on the back part 11a. Since the eccentric distance is smaller than that of the beam form bottom support 1 which does not form the tool body fixing hole 11a, the pipe body 13 is further prevented from bending outward, and the form support part 14 supports the bottom part of the beam form. can definitely support.

(When supporting the bottom of the beam formwork 22b, etc., where the distance from the two horizontal end thick members 25, 25 to the wall formwork 21 is small and the amount of protrusion (extension amount) from the wall formwork 21 is also small. )

In this case as well, the worker first hooked the hooking portions 11b1 of the side plate portions 11b, 11b of the receiving tool main body 11 to the two horizontal end thick members 25, 25 in the same manner as in the case shown in FIG. After that, after passing the fixing nut 28b of the formwork binding fitting 28 through the large-diameter hole portion 11a1 formed in the fixture main body fixing hole 11a3 of the back plate portion 11a without removing it, the fixture main body 11 is pushed down to remove the back plate. After moving the threaded portion 28a of the formwork binding metal fitting 28 to the small diameter hole portion 11a2 of the portion 11a, the fixing nut 28b is tightened, and while the formwork binding metal fitting 28 is used, the two fixing nuts 28b are not removed. The support body 11 of the beam formwork bottom support 1 is fixed to the horizontal end thick members 25 , 25 .

Next, the operator inserts the rotating shaft portion of an impact driver (not shown) into the fitting portion of the head portion 15a2 of the male threaded body 15 to rotate the male threaded body 15 so that the large diameter cylinder of the pipe body 13 is formed. The male threaded body 15 is pushed until the formwork support part 14 provided on the upper part of the part 13a abuts against the beam formwork vertical plywood 22b and the lower surface of the auxiliary material 23, which constitute the bottom of the beam formwork, and firmly supports them from below. The pipe body 13 screwed onto the screw portion 15a1 is lifted.

When the pipe body 13 rises, as shown in FIG. 6, the formwork support portion 14 at the upper end of the pipe body 13 comes into contact with the beam formwork vertical plywood 22b and the lower surface of the auxiliary member 23, which constitute the bottom of the beam formwork. When the screws 15 are tightened, the formwork support portions 14 can reliably support the beam formwork vertical plywood 22b and the lower surface of the auxiliary member 23, which constitute the bottom of the beam formwork.

Unlike the case shown in FIGS. 1 and 6, when supporting the bottoms of vertical beam types 22b, 22c, etc., which protrude from the wall formwork 21 (the amount of overhang) is large, as shown in FIG. With the formwork support 14 rotated 180 degrees with respect to the case shown in FIGS. It is sufficient to support the bottom of the .

<Main effects of the beam form bottom support 1 of the embodiment>
Therefore, in the beam formwork bottom support 1 of the embodiment, the height adjustment mechanism of the formwork support part 14 that supports the bottom part of the beam formwork is constituted by the pipe body 13 and the male screw body 15, and the formwork support part 14 The upper plate portion 12a of the U-shaped guide body 12 provided in the receiver main body 11 is rotated by the rotation of the male threaded body 15 screwed into the female threaded portion 13b1 of the pipe body 13. It moves up and down while being inserted into the pipe body insertion hole 12a1 formed in the above.

Therefore, the pipe body 13 through which the male threaded body 15 is inserted moves up and down while being guided by the pipe body insertion hole 12a1 formed in the upper plate portion 12a of the guide body 12. It is possible to suppress the looseness caused by the nut body 15b, suppress the outward displacement of the formwork support part 14 on the upper part of the pipe body 13, and reliably support the bottom part of the beam formwork. Since the body 13 is raised and lowered, the weight can be reduced, and the mounting workability can be improved.

Further, the side plate portions 11b, 11b on both the left and right sides of the receiving tool body 11 are formed with hooking portions 11b1 that are hooked on the two horizontal end thick members 25, 25 for fixing the wall formwork 21, respectively. Therefore, it is possible to prevent the receiving body 11 from rotating when tightening the male threaded body 15, and in this respect also, the mounting workability can be improved.

In particular, in the beam formwork bottom support 1 of the embodiment, the back plate part 11a of the support tool main body 11 has the formwork binding fittings for binding the wall formwork 21 at the height of the latching parts 11b1, 11b1. 28 and the nut body 28b are inserted through the hole 11a3. It can be stably fixed by thick members 25, 25 and the like.

Furthermore, the eccentric distance from the fixing point of the support body 11 to the formwork to the pipe body 13 supporting the bottom of the beam formwork is the back plate through which the threaded portion 28a of the formwork binding fitting 28 passes and which is fastened with the fixing nut 28b. It is the distance from the outer surface of the portion 11a to the center of the cross section of the pipe body 13, which is an eccentric distance 2 compared to the case of the beam formwork bottom support 1 (FIG. 2) in which the support body fixing hole 11a is not formed in the back surface portion 11a. The distance from the cross-sectional center of the horizontal end thick members 25, 25 of the book to the cross-sectional center of the pipe body 13 becomes shorter.

As a result, the acting moment becomes smaller, and the entire beam form bottom support 1 is less likely to rotate, and the pipe body 13 is less likely to bend or incline outward. The bottom of the frame can be reliably supported.

As shown in FIG. 3(b), the fixing hole 11a3 of the receiving body is defined by the large-diameter hole portion 11a1 having an inner diameter R1 through which the fixing nut 28b of the formwork binding fitting 28 passes, and the outer diameter of the fixing nut 28b. and a small-diameter hole portion 11a2 having an inner diameter R2 larger than the outer diameter of the threaded portion 28a. Only by loosening the fixing nut 28b of 28 without removing it, it becomes possible to fix the receiving device body 11 of the beam form bottom receiving device 1 to the two horizontal end thick members 25,25.

Therefore, the work of fixing the receiving body 11 to the two lateral thick members 25, 25 can be simplified, and in this respect as well, the mounting workability can be improved.

In addition, in the beam formwork bottom support 1 of the embodiment, the upper end of the pipe body 13 is joined to the formwork support part 14 at a position eccentric from the center of the formwork support part 14 .

Therefore, as shown in FIG. 1 and FIG. While supporting the bottom of the beam formwork 22b etc. with the side with the larger amount facing the wall formwork 21, as shown in FIG. When supporting the bottom of the beam formwork 22b, etc., it is possible to support the bottom part of the beam formwork 22b or the like with the side of the formwork support part 14 having a smaller amount of protrusion facing the wall formwork 21. In addition, the bottom of the beam formwork 22b and the like can be reliably supported even when a plurality of beam widths are supported. In this respect as well, the installation workability can be improved.

In the description of the above embodiment, the horizontal end thick member 25 is configured by a single pipe or the like having a circular cross section. As shown in FIG. 8, the hooking portions 11b1' and 11b1' provided on the side plate portions 11b' and 11b' are notched according to the square cross-sectional shape of the horizontal end thick member 25'. It is sufficient to construct a beam formwork bottom support 1' having

In addition, in the description of the above embodiment, the male threaded body 15 is composed of the bolt body 15a and the nut body 15b. It is sufficient that the pipe body 13 and the formwork support portion 14 can be moved up and down (lifted and lowered) by being rotatably supported in the insertion hole 12c1 so as not to fall off, and thus, for example, a full screw and two Of course, it may be constituted by a nut body.

In addition, in the description of the above embodiment, the beam formwork bottom support 1 was fixed to the horizontal end thick members 25, 25 using the threaded portion 28a and the fixing nut 28b of the formwork binding fitting 28. In the present invention, the horizontal end thick members 25, 25 are attached to the horizontal end thick members 25, 25 by using ordinary bolts or screws and fixing nuts that can be inserted into the fixing holes 11a3 of the support body without using the formwork binding metal fittings 28. Of course, it is also possible to fix it.

Further, in the description of the above embodiment, the back plate portion 11a is provided with the support body fixing hole 11a3 composed of the large diameter hole portion 11a1 and the small diameter hole portion 11a2, but in the present invention, the support body fixing hole 11a3 may be omitted, and it is of course possible to provide the receiving body fixing hole 11a3 only for the small-diameter hole portion 11a2.

In addition, in the description of the above embodiment, the form support part 14 is provided eccentrically with respect to the upper end of the pipe body 13, but the present invention is not limited to this. may of course be provided by joining the .

In addition, in the description of the above embodiment, the pipe body 13 is composed of the large-diameter cylindrical portion 13a and the small-diameter cylindrical portion 13b having the female screw portion 13b1. Needless to say, a configuration in which a nut body or the like to be screwed onto the male threaded portion 15a1 of the male threaded body 15 is provided by welding or the like at the lower end portion of the diameter cylindrical portion 13a.

Reference Signs List 1, 1'... Beam form bottom support, 11, 11'... Support main body, 11a... Back plate portion, 11a1... Large diameter hole, 11a2... Small diameter hole, 11a3... Support main body fixing hole, 11b, 11b' side plate portion 11b1, 11b1' hook portion 11b11 straight portion 11b12 curved portion 12 guide body 12a upper plate portion 12a1 pipe body insertion hole 12b vertical plate portion 12c Lower plate portion 12c1 Male screw body insertion hole 13 Pipe body 13a Large diameter cylinder portion 13b Small diameter cylinder portion 13b1 Female screw portion 14 Form support portion 14a Support plate portion 14a1... screw hole, 14b, 14c... rib, 15... male screw body, 15a... bolt body, 15a1... male screw part, 15a2... head, 15b... nut body, 15c... washer, 21... wall formwork, 22a... Horizontal beam formwork 22b, 22c Vertical beam formwork 23 Auxiliary material 24 Vertical bar 25, 25' Thick horizontal end member (horizontal bar) 26 Separator 27 Formwork support 28 .

Claims (3)

A beam form bottom support that supports the bottom of the beam form overhanging from the wall form,
It has a back plate portion and side plate portions extending in a direction perpendicular to the back plate portion from both left and right sides of the back plate portion, and wall formwork is provided on the side opposite to the back plate portion side of the left and right side plate portions. a receiver body provided with a hooking portion that hooks on the horizontal end thick material to be fixed;
It is provided on the back plate portion side of the support main body and has an upper plate portion and a lower plate portion. a guide body in which a hole is formed;
a pipe body vertically movably inserted into the pipe body insertion hole of the upper plate portion of the guide body and having a female thread formed therein;
a formwork support part provided at the upper end of the pipe body and supporting the bottom part of the beam formwork;
The lower plate portion of the guide body is rotatably supported in the male threaded body insertion hole so as not to fall off, and the male threaded portion is screwed into the female threaded portion of the pipe body. a male screw body for vertically moving the pipe body inserted into the pipe body insertion hole of the part;
A beam form bottom support, comprising: The beam formwork bottom bracket of claim 1, wherein
On the back plate portion of the support body, a formwork binding device for binding the horizontal end thick member to the wall formwork is provided at a position that is at the height of the hooking portion and below the guide body and the male screw body. A beam form bottom support, characterized in that a support body fixing hole is formed through which at least a threaded portion of a metal fitting can be inserted to fix the support body to the horizontal end thick member. In the beam formwork bottom support according to claim 1 or claim 2,
A beam formwork bottom support, wherein the formwork support part is joined to the upper end of the pipe body at a position eccentric from the center of the formwork support part.

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