JPH083583Y2 - Temporary fixing device for construction work - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary construction device for construction work for temporarily fixing construction materials such as handrails, scaffolds, work members, etc. necessary for construction work to concrete concrete. .

[0002]

2. Description of the Related Art At a construction site or the like, handrails for maintaining the safety of workers during construction work, scaffolds for work at high places, support members for working members, etc. are attached. All of these handrails, scaffolds, supports, etc. will be removed when the construction work is completed.

FIG. 6 is a perspective view showing an example of a handrail used at such a construction site. A square plate-shaped base 2 is fixed to a horizontal skeleton concrete 1 with spikes 3 and the like, and the base 2 is fixed. The lower end of the vertically oriented pipe member 4 is attached to the center of the pipe as described below, and the horizontal pipe member 5 is fixed to the upper end of the pipe member 4 with an orthogonal type clamp 6 to form a handrail. .

FIG. 7 is a vertical sectional front view of another example of a handrail, in which a base 2 is fixed by a spike 3 to a pair of skeleton concrete 7, 7 forming facing walls, and the base 2 is attached to the center of the base 2. Is a handrail in which the end portions of the pipe members 4 and 4 in the horizontal direction are attached as described below, and the pipe members 4 and 4 are bound by a clamp 8 to form a handrail.

FIG. 8 is an enlarged perspective view showing the base 2 and the lower end of the pipe member 4 in the vertical direction.
A round hole 9 is bored in a corner of the quadrangular plate-shaped base 2, and a cylindrical pipe fitting portion having an outer diameter substantially equal to the inner diameter of the pipe material 4 is formed in the center of the surface of the base 2. 10 is fixed vertically, and 1 is attached to the upper end of the pipe fitting portion 10.
A pair of L-shaped notch grooves 11 and 11 are provided.

On the other hand, a rod 12 is fixed in the diametrical direction near the end of the pipe member 4, and the rod 12 has an L-shaped cutout groove 11.
It is thick enough to fit in.

When the end portion of the pipe material 4 is attached to the center of the base 2, the end portion of the pipe material 4 is fitted to the outside of the pipe fitting portion 10 at the center of the base 2, and the rod 12 has an L-shaped notch groove 11.
The pipe material 4 is pushed into the pipe fitting portion 10 so that the rod 12 is fitted into the L-shaped notch groove 11
The pipe member 4 is prevented from coming out of the pipe fitting portion 10 by reaching the inner part of the horizontal portion of the pipe member 4.

In order to fix the base 2 to the concrete surface, conventionally, as shown in FIG. 9, a hole 13 corresponding to the drilling position of the round hole 9 is drilled at the position where the base 2 of the frame concrete 1 is to be fixed. After placing the base 2 on it, the anchor 14 is inserted into the hole 13 of the skeleton concrete 1 from above the base 2 through the round hole 9 of the base 2 as shown on the left side of FIG.

The anchor 14 has a cylindrical shape, and an internal thread 16 for screwing a nut 15 is engraved on the upper half of the outer periphery of the anchor 14, and the spike 3 is inserted into the center of the anchor 14 from above. There is a spike insertion hole 17 for the anchor 1, and at the bottom of the anchor 14, the anchor 1
A cut 18 is cut in the longitudinal direction of No. 4.

In such an anchor 14, a nut 15 is screwed into a female screw 16 and inserted into a hole 13 of a skeleton concrete 1 through a round hole 9 from above the base 2, and then a spike 3 is inserted into a spike insertion hole 17 from above. Plug in. When the spike 3 is tapped into the spike insertion hole 17, the lower end of the spike 3 is at the spike insertion hole 1 as shown on the right side of FIG.
It will penetrate the bottom of 7 and push open the break 18. For this reason, the hem of the anchor 14 is the hole 13 of the building concrete 1.
It is strongly pressed against the side wall of the building and cannot get out of the skeleton concrete 1. Then, if the nut 15 is tightened, the base 2 will be fixed to the skeleton concrete 1.

As another conventional method for fixing the base 2 to the skeleton concrete 1, as shown in FIG.
Place the washer 1 over the round hole 9 in the base 2 as shown on the left side of
It is also practiced to put 9 and insert the concrete nail 20 and drive the concrete nail 20 as shown on the right side of FIG.

In this way, the base 2 is replaced by the skeleton concrete 1 shown in FIG. 6 or the skeleton concrete 7 shown in FIG.
Then, the handrail as shown in FIGS. 6 and 7 can be made on the construction site by fixing the end portion of the pipe member 4 to the center of the base 2 by fixing it to. In FIG. 6, a large number of vertically arranged pipe members 4 may be arranged in parallel and the pipe members 4 may be added upward to form a scaffold.

[0013]

[Problems to be Solved by the Invention] Conventionally, when a plurality of holes 13 are formed in a skeleton concrete 1 as shown in FIG.
Not all the holes 13 are exactly aligned with the positions of the round holes 9 of the base 2, and one hole 13 is inserted through the round holes 9 of the base 2.
In some cases, the anchor 14 could only be inserted, and the base 2 could be fixed to the skeleton concrete 1 at only one location, which made the fixation of the base 2 unstable.

In order to prevent such a situation, conventionally, the base 2 is once placed on the skeleton concrete 1 at a position where the base 2 is to be fixed, and a paint is applied on the skeleton concrete 1 through the round hole 9 of the base 2. After spraying the spray, mark the position of the round hole 9 on the skeleton concrete 1 with paint, remove the base 2 and drill a hole 13 at the position of the mark, and the plurality of holes 13 all match the position of the round hole 9. In this way, the base 2 was firmly fixed to the skeleton concrete 1, but it was troublesome and the concrete contained gravel, which was affected, and the position of the hole 13 on the gravel was displaced by the drill. There was a drawback that

When the construction work is completed and all of the handrails and scaffolds are removed, the pipe material 4, nuts 15 and base 2 are removed.
Even if the anchor is removed, the upper part of the anchor 14 and the spike 3 remains in a state of protruding from the skeleton concrete 1. Therefore, the protruding part of the anchor 14 and the spike 3 is cut with a cutter or the like to repair the mark, and mortar is applied. There is a drawback that it takes time and effort to rework the finished surface.

Further, in the method of driving the concrete nail 20 shown in FIG. 10, when the construction work is completed and the handrail and scaffolding are all removed, the concrete nail 20 is forcibly pulled out and the base 2 is removed. Since the skeleton concrete 1 is destroyed when it is forcibly pulled out, there is a drawback that mortar is also applied and repair work is required.

The present invention eliminates the above-mentioned conventional defects, and the positions of a plurality of holes formed in the skeleton concrete and the positions of a plurality of holes in the base are easily matched, and the construction work is completed and the handrails and scaffolding are completed. It is an object of the present invention to provide a temporary fixing device for a pipe material, which can easily perform a treatment of a trace of removing the base when all of the pipes are removed.

[0018]

DISCLOSURE OF THE INVENTION A temporary fixing device for construction work according to the present invention comprises a plate-shaped base for fixing members to be temporarily fixed, and a long hole provided diagonally in the vicinity of a corner of the base. A long hole, a tubular anchor to be inserted into a hole drilled in the concrete frame, an inclined surface formed at the lower end of the inner hole of the anchor and having a reduced diameter, and a longitudinal direction at the lower end of the anchor. A cut provided on the base, an internal thread engraved in the upper part of the inner hole of the anchor, a driving piece inserted into the inner hole of the anchor from above and contacting the inclined surface, and a vertical hole at the center of the base. It is characterized by comprising a bolt screwed into the female screw through the elongated hole, and a driving tool which is inserted into the vertical hole of the bolt and drives the driving piece downward.

[0019]

[Operation] By inserting the bolt into the elongated hole of the base, screwing the bolt into the female thread of the anchor, and moving the bolt along the elongated hole of the base, the position of the anchor screwed into the bolt is adjusted to the frame concrete. It is possible to adjust it so that it matches the hole of the anchor, insert the anchor into the hole of the concrete structure and insert the driving tool into the vertical hole of the bolt and hit the driving tool, the driving tool will fit into the inner hole of the anchor. It descends along and pushes the inclined surface of the lower end of the inner hole to push the outer peripheral lower end of the anchor into the hole of the structural concrete so that the anchor does not come out from the hole of the structural concrete, and the base is fixed to the structural concrete.

When the construction work is completed and all the necessary members such as handrails, scaffolds, work members, etc. are removed, turn the bolts to remove them from the anchors and remove the base to make holes in the concrete surface of the frame. Simply fill the mortar and embed the anchor.

[0021]

[Embodiment] Next, an embodiment of the present invention will be described when applied to a handrail as a member necessary for construction work.

FIG. 1 is a vertical cross-sectional view showing a usage state of an embodiment of the present invention, and FIG. 2 is a plan view of a base of the embodiment of the present invention, in which the center of the surface of a square plate-shaped base 21. A cylindrical pipe fitting portion 10 having an outer diameter substantially equal to the inner diameter of the pipe material 4 is vertically fixed to the upper end of the pipe material 4, and a pair of pipe fitting portions 10 are provided at the upper end of the pipe fitting portion 10. L-shaped notch grooves 11, 11 are provided.

1 in the diagonal direction of the rectangular plate-shaped base 21
In the vicinity of the pair of corners 22, a pair of long holes 23 that are diagonally long are formed. In addition, a pair of long holes 25 extending in the diagonal direction are also formed in the vicinity of another pair of diagonal corners 24 of the rectangular plate-shaped base 21. The length of the long holes 23 and the length of the long holes 25 are not necessarily the same size, and one pair of long holes may be longer than the other long hole. Further, only one of the pair of long holes 23 and the other pair of long holes 25 may be provided.

The above-mentioned base 21 is used as the skeleton concrete 1
The device shown in FIG. 3 is used for fixing to. FIG.
The device shown in FIG. 1 has a cylindrical anchor 26 and a driving piece 27.
A bolt 28, a spring washer 29, a washer 30, and a driving tool 31.

At the lower end of the inner hole 32 of the tubular anchor 26, an inclined surface 33 whose diameter is reduced downward is formed.
A female screw 34 is engraved on the upper portion of the inner hole 32. Further, a plurality of cuts 35 are provided in the lower end portion of the anchor 26 in the longitudinal direction of the anchor 26, and a chamfered portion 36 that is inclined is formed at the lower end of the outer periphery.

The driving piece 27 has an inner hole 32 of the anchor 26.
Has an outer diameter slightly smaller than the inner diameter of, and is inserted into the inner hole 32 of the anchor 26 from above,
A circular recess 37 is provided on the upper surface of the driving piece 27.

The bolt 28 is screwed into a female screw 34 formed in the inner hole 32 of the anchor 26, and a circular vertical hole 38 penetrates through the center of the bolt 28. When the bolt 28 is screwed into the female screw 34, the spring washer 29 and the washer 30 are fitted.

The driving tool 31 is a rod-shaped member which can be inserted into the vertical hole 38 of the bolt 28. When the driving tool 31 is inserted into the vertical hole 38, the lower end of the driving tool 31 fits into the recess 37 of the driving tool 27. A thick cylindrical hitting portion 39 is integrally attached to the upper end.

When the base 21 is to be fixed to the skeleton concrete 1, the base 21 of the skeleton concrete 1 is to be fixed.
The holes 13 as shown in FIG. 4 are drilled in the same manner as in the conventional case so that the holes 13 and 25 are approximately aligned with the positions where the holes are to be fixed, and the inside of the holes 13 is cleaned. The size of the horizontal cross section of the hole 13 is the same as that of the tubular anchor 2 described in FIG.
The size of the hole 13 may be a size larger than the length of the anchor 26, and the depth of the hole 13 may be an appropriate depth.

The four holes 13 are not necessarily required to be provided, and a pair of holes 13 may be formed so as to be substantially aligned with the positions of the pair of diagonally elongated holes 23 of the base 21. It may be a pair of holes 13 that are substantially aligned with the positions of the other diagonally elongated holes 25 of the base 21.

On the other hand, the driving tool 31 of FIG. 3 is removed, the bolt 28 is pulled out from the female screw 34 of the inner hole 32 of the anchor 26, and the anchor 26 is driven into the inner hole 32 as shown in the left side of FIG. With the bolt inserted, hold it from the lower side of the base 21 in the long holes 23 and 25 by hand, and
8 is a state in which the spring washer 29 and the washer 30 are fitted and inserted into the elongated holes 23 and 25 from the upper side of the base 21.

Then, as shown on the right side of FIG.
8 through the long holes 23 and 25, and the female screw 34 of the anchor 26.
When the screw 26 is screwed into the anchor 26, the anchor 26 is suspended by the bolt 28 under the long holes 23 and 25 of the base 21.

In this way, the base 21 is carried above the hole 13 of the skeleton concrete 1 in a state where the anchor 26 is suspended under the long holes 23 and 25, and as shown in FIG.
Insert 6 into hole 13. At this time, even when the bolt 28 is moved along the long holes 23 and 25 and the position of the base 21 is adjusted to align the position of the anchor 26 with the hole 13 and four holes 13 are drilled. At least three anchors 26 will be able to be inserted into the holes 13. The chamfered portion 36 (see FIG. 3) formed on the lower end of the outer periphery of the anchor 26 serves to easily insert the anchor 26 into the hole 13.

The anchor 26 is attached to the hole 1 of the building concrete 1.
3 is inserted into the vertical hole 38 of the bolt 28.
When the tapping portion 39 that is integrated with the upper end of the driving tool 31 is hit with a hammer or the like, the lower end of the driving tool 31 is fitted into the recess 37 of the driving piece 27, and the striking force of the hammer or the like is applied to the driving piece 27. I will tell you.

The driving piece 27 which receives the striking force is the anchor 2
6, the inclined surface 33 formed at the lower end of the inner hole 32 is pushed laterally with a strong force, and a plurality of cuts 35 are pushed open as shown in the right side of FIG. The anchor 26 does not come out of the hole 13 because it is strongly pressed against. Then, if the bolt 28 is tightened, the base 21 is inserted through the spring washer 29 and the washer 30.
Will be fixed to the skeleton concrete 1. The driving tool 31 is one, and the driving pieces 27 may be driven sequentially.

If the length of the driving tool 31 is set to be approximately the same as the driving depth of the driving piece 27, when the tapping portion 39 is hit, the lower surface of the hitting portion 39 contacts the upper surface of the bolt 28, so that the driving piece 31 is driven. It does not happen that the driving piece 27 is pushed downward more than necessary and the driving piece 27 is pulled out below the anchor 26.

After fixing the base 21 to the concrete body 1 in this way, the end portion of the pipe material 4 is fitted to the outside of the pipe fitting portion 10 at the center of the base 21 as in the conventional one described in FIG. , The pipe member 4 is pushed into the pipe fitting portion 10 so that the rod 12 fits in the L-shaped notch groove 11, and the pipe member 4 is rotated so that the rod 12 reaches the inner part of the horizontal portion of the L-shaped notch groove 11. In this way, the pipe material 4 is prevented from coming out of the pipe fitting portion 10.

[0038] The above description is for the horizontal frame concrete 1
Although the case where the base 21 is fixed is described above, when the base 21 is fixed to the pair of skeleton concretes 7 and 7 forming the facing walls as shown in FIG.
It can be fixed in the same way only by changing it.

By fixing the base 21 to the concrete structures 1 and 7 and attaching the end portion of the pipe material 4 to the center of the base 21, it is possible to make a handrail or a scaffold on the construction site as in the conventional case.

When all the handrails and scaffolds are removed after the construction work is completed, the bolt 28 of FIG. 1 is extracted from the female screw 34 (see FIG. 3) of the anchor 26, and the spring washer 29, washer 30, and pipe member 4 are removed. , When the base 21 is removed, the anchor 26 and the driving piece 27 fixed in the hole 13 are left at the site where the construction is completed, but it is only necessary to fill the hole 13 with mortar. The skeleton concrete 1 can have a smooth finished surface.

In the above-described embodiment, the handrail is temporarily fixed to the construction site, but when temporarily fixing other members necessary for the construction work, for example, the base is fixed to the wall surface and the base is fixed to the base. In the case where the rolling contact for suspending the material is fixed, a flat plate without the pipe fitting portion 10 may be used as the base, and the rolling contact may be welded to the base.

[0042]

According to the present invention, since the long holes 23 and 25 which are diagonally long are formed near the corners of the plate-like base 21,
There is an effect that the hole 13 to be drilled in the frame concrete 1 for fixing the base 21 can be easily drilled without strict alignment.

Then, a hole 1 to be bored in the skeleton concrete 1
The depth of 3 may be deeper than the length of the anchor 26,
There is no need to make accurate dimensional measurements.

Further, since the spikes 3 are not required for each anchor 26, all the anchors 26 can be fixed to the holes 13 of the skeleton concrete 1 with one driving tool 31, so that the material and the cost can be saved. There is an effect that can be.

In addition, when the construction work is completed and all the members necessary for the construction work such as handrails and scaffolds are removed, the bolt 2
8 is pulled out from the anchor 26, the base 21 is removed together with the members necessary for the construction work, and the mortar is filled in the holes 13 formed in the skeleton concrete 1 to make the skeleton concrete 1 smooth. There is an effect that it can be a finished surface.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a fixed state of an embodiment of the present invention.

FIG. 2 is a plan view of a base according to an embodiment of the present invention.

FIG. 3 is an enlarged vertical sectional view of an embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view showing a state in which holes are bored in the skeleton concrete.

FIG. 5 is a vertical cross-sectional view showing a state in which an anchor is attached to a base.

FIG. 6 is a perspective view showing an example of a handrail.

FIG. 7 is a vertical cross-sectional view of another example of a handrail.

FIG. 8 is a perspective view of a conventional temporary fixing device for a pipe material.

FIG. 9 is a vertical sectional front view showing a fixed state of a conventional pipe material temporary fixing device.

FIG. 10 is a vertical cross-sectional front view showing another fixed state of the conventional temporary fixing device for a pipe material.

[Explanation of symbols]

 1 Frame concrete 21 Base 23 Long hole 25 Long hole 26 Anchor 27 Driving piece 28 Bolt 31 Driving tool 32 Inner hole 33 Inclined surface 34 Female screw 35 Cut

Claims (1)

[Scope of utility model registration request] 1. A plate-shaped base for fixing a member to be temporarily fixed, a long hole diagonally elongated near a corner of the base, and a cylinder inserted into a hole drilled in a skeleton concrete. -Shaped anchor, an inclined surface formed in the lower end of the inner hole of the anchor and having a reduced diameter, a slit formed in the lower end of the anchor in the longitudinal direction, and an engraved upper part of the inner hole of the anchor. Female screw, a driving piece inserted into the inner hole of the anchor from above and contacting the inclined surface, a bolt having a vertical hole at the center and screwed into the female screw through the elongated hole of the base, and the bolt. And a driving tool which is inserted into a vertical hole of the driving tool and drives the driving piece downward, a temporary fixing device for construction work.