JPH0656403U - Temporary fixing device for pipe material - Google Patents

Abstract

(57) [Abstract] [Purpose] When the positions of holes on the concrete surface and the positions of holes on the base are easily matched, and when the construction work is completed and the handrails and scaffolds are removed, (EN) Provided is a temporary fixing device for a pipe material, which enables easy treatment even after removing the base. [Structure] A quadrangular plate-shaped base 21 and elongated holes 23, 25 formed diagonally long in the vicinity of the corners of the base 21.
A bolt 17 inserted into the long holes 23 and 25, a tubular anchor 26 screwed into the tip of the bolt 27, a cone 28 inserted into the tip of the anchor 26, and a longitudinal direction at the tip of the anchor 26. And a pipe 32 which is provided on the surface of the base 21 and is fitted with a pipe 32 for fitting a pipe.
0, and the position of the bolt 17 can be adjusted along the elongated holes 23 and 25 so that the bolt 17 can be pulled out from the anchor 26.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe material temporary fixing device for temporarily fixing pipe materials used for handrails and scaffolds to a concrete surface at a construction site or the like.

[0002]

[Prior art]

 At construction sites, etc., handrails for maintaining the safety of workers during construction work and scaffolding for high-altitude work are installed. These handrails and scaffolds are usually made by combining various pipe materials such as pipe materials temporarily fixed to concrete surfaces such as floors and walls, and when the construction work is completed, the handrails and scaffolds are all removed. To be done.

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

FIG. 5 is a vertical cross-sectional front view of another example of a handrail, in which a base 2 is fixed by a spike 3 to a pair of concrete surfaces 7, 7 forming facing walls, At the center, the ends of the pipe members 4 and 4 which are made horizontal are attached as described below, and the pipe members 4 and 4 are bound by a clamp 8 to form a handrail.

FIG. 6 is an enlarged perspective view showing the base 2 and the lower end of the pipe member 4 in the vertical direction, in which a round hole 9 is formed in a corner of the rectangular plate-shaped base 2. At the center of the surface of the base 2, a cylindrical pipe fitting portion 10 having an outer diameter substantially equal to the inner diameter of the pipe material 4 is vertically fixed. A pair of L-shaped notch grooves 11, 11 are provided at the upper end of the.

On the other hand, a rod 12 is fixed near the end of the pipe member 4 in the diametrical direction, and the rod 12 has such a thickness that it can be fitted into the L-shaped notch groove 11.

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. The pipe material 4 is pushed into the pipe fitting portion 10 so that the pipe material 4 fits into the pipe 11, and the pipe material 4 is rotated so that the rod 12 reaches the depth of the horizontal portion of the L-shaped cutout groove 11. Make sure that it does not come out of the fitting part 10.

In order to fix the base 2 to the concrete surface, conventionally, as shown in FIG. 7, a hole corresponding to the drilling position of the round hole 9 is provided at the place where the base 2 of the concrete surface 1 is to be fixed. After drilling 13 and placing the base 2 on it, the anchor 14 is inserted into the hole 13 from above the base 2 through the round hole 9 as shown on the left side of FIG.

The anchor 14 has a columnar shape, and an internal thread 16 for screwing a nut 15 is engraved on the upper half of the outer periphery, and a spike insertion for inserting the spike 3 from above is formed at the center. A hole 17 is provided, and a cut 18 is made in the lower portion in the longitudinal direction of the anchor 14.

After inserting the anchor 14 into the hole 13 through the round hole 9, the nut 15 is screwed into the female screw 16 and the spike 3 is inserted into the spike insertion hole 17 from above. When the spike 3 is tapped into the spike insertion hole 17, the lower end of the spike 3 penetrates the bottom of the spike insertion hole 17 and pushes the cut 18 open, as shown on the right side of FIG. Therefore, the hem of the anchor 14 is strongly pressed against the side wall of the hole 13 and does not come out of the hole 13. Then, if the nut 15 is tightened, the base 2 will be fixed to the concrete surface 1.

As another conventional method for fixing the base 2 to the concrete surface 1, a washer 19 is placed on the round hole 9 as shown on the left side of FIG. It is also practiced to 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 fixed to the concrete surface 1 or the concrete surface 7 shown in FIG. 7, and the end portion of the pipe material 4 is attached to the center of the base 2 so that the base material shown in FIGS. Handrails can be made at construction sites. In FIG. 4, it is possible to make a scaffold by arranging a number of pipe members 4 arranged vertically and adding the pipe members 4 upward.

[0013]

[Problems to be solved by the device]

 Conventionally, when a plurality of holes 13 are drilled in a concrete surface 1 as shown in FIG. 7, not all of the holes 13 are exactly aligned with the positions of the round holes 9, and only one hole 13 is provided. Since the base 2 could not be inserted and the base 2 could be fixed to the concrete surface 1 only at one place, the fixing of the base 2 was sometimes unstable.

In order to prevent such a situation, conventionally, the base 2 is once placed on the concrete surface 1 at a position where the base 2 is to be fixed, and the paint is sprayed onto the concrete surface 1 through the round hole 9. After spraying, mark the position of the round hole 9 on the concrete surface 1 with paint, remove the base 2 and drill a hole 13 at the position of the mark, and the holes 13 are all the positions of the round hole 9. The base 2 was firmly fixed to the concrete surface 1 so as to correspond to the above, but it is troublesome and the concrete contains gravel, so it is affected and the position of the hole 13 shifts. There was a flaw.

When the construction work is completed and all the handrails and scaffolds are removed, the upper parts of the anchors 14 and spikes 3 project from the concrete surface 1 even if the pipe material 4, nut 15 and base 2 are removed. Since it remains in a state, it has a drawback that it takes time to cut the protruding portion of the anchor 14 and the spike 3 with a cutter or the like to repair the mark, and apply mortar to repair the finished surface.

Further, in the method of driving the concrete nail 20 shown in FIG. 8, 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 concrete surface 1 is destroyed when the nails 20 are forcibly pulled out, there is a drawback that mortar must be applied to repair the nails.

The present invention eliminates such conventional drawbacks, and the positions of the holes formed on the concrete surface and the positions of the holes on 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 pipe materials, which makes it possible to easily treat the traces of the base removed when all of the pipes are removed.

[0018]

[Means for Solving the Problems]

 The pipe material temporary fixing device of the present invention has a rectangular plate-like base, a long hole diagonally formed near the corner of the base, a bolt inserted in the long hole, and a bolt. Cylindrical anchor screwed to the tip of the anchor, a cone inserted into the tip of the anchor, a slit provided in the longitudinal direction at the tip of the anchor, and a cylinder provided on the surface of the base for fitting a pipe And a pipe-shaped fitting portion.

[0019]

[Action]

 By moving the bolt inserted into the long hole of the base along the long hole, it is possible to adjust the position of the anchor screwed to the bolt so that it matches the hole on the concrete surface, and construction work can be performed. When completed and removing all handrails and scaffolds, simply turn the bolt to remove it from the anchor, remove the base, fill the holes in the concrete surface with mortar and embed the anchor.

[0020]

【Example】

 Next, an embodiment of this invention will be described.

FIG. 1 is a vertical sectional front view showing a usage state of one embodiment of the present invention, and FIG. 2 is a plan view of a base of one embodiment of the present invention, showing a surface of a rectangular 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 at the center, 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.

In the vicinity of a pair of diagonal corners 22 of the quadrilateral plate-shaped base 21, a pair of diagonally elongated holes 23 are formed. In addition, a pair of long holes 25 which are diagonally long are also formed in the vicinity of a pair of diagonally opposite 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 dimension, and the length of one pair of long holes may be longer than that of the other long hole. Furthermore, only one of the pair of long holes 23 and the other pair of long holes 25 may be formed.

To fix the above-mentioned base 21 to the concrete surface 1, the device shown in FIG. 3 is used. The device shown in FIG. 3 includes a tubular anchor 26, a bolt 27, a cone 28, a spring washer 29, and a washer 30.

An internal thread 31 is engraved from above on the inner surface of the tubular anchor 26, and a plurality of cuts 32 are provided in the longitudinal direction of the tubular anchor 26 at the tip portion. The tip of the bolt 27 can be screwed into the female screw 31 from above. At this time, the bolt 27 fits the spring washer 29 and the washer 30.

The conical body 28 is integrally formed with a short columnar portion 33 that closely fits on the inner surface of the tubular anchor 26, and the columnar portion 33 is closely formed on the inner surface of the tubular anchor 26. The anchor 26 and the conical body 28 are fitted together so that they are integrally combined.

When the base 21 is to be fixed to the concrete surface 1, the base 21 of the concrete surface 1 is to be almost fixed to the positions where the bases 21 are to be fixed and the positions of the long holes 23 and 25. The hole 13 as shown in FIG. 1 can be drilled as in the conventional case. The four holes 13 are not necessarily required to be formed, and may be a pair of holes 13 which are substantially aligned with the positions of the pair of diagonally elongated holes 23 of the base 21. 21 may be a pair of holes 13 that are substantially aligned with the positions of the other pair of diagonal long holes 25.

After forming the hole 13 in the concrete surface 1, the bolt 27 is removed from the anchor 26 of FIG. 3 together with the spring washer 29 and the washer 30, and the anchor 26 and the conical body 28 which are integrally combined are shown in FIG. The cone 28 is inserted into the hole 13 so that the cone 28 faces the bottom of the hole 13 as shown on the left side of FIG.

Next, the base 21 is placed on the hole 13, and the tip of the bolt 27 into which the spring washer 29 and the washer 30 are fitted is passed through the slots 23 and 25, and the female screw 31 of the anchor 26 (see FIG. 3). Screw into. When the tip of the bolt 27 is screwed into the female screw 31, the base 21 is moved or the bolt 27 is moved along the long holes 23 and 25 to perform the alignment. As a result, even when four holes 13 are formed, the three bolts 27 can be securely screwed into the female screw 31 of the anchor 26.

When the tip of the bolt 27 is screwed into the female screw 31 of the anchor 26 and then the bolt 27 is tapped from above, the bolt 27 and the anchor 26 are tapped into the inner part of the hole 13 in a state of being a cone body. When the lower surface of 28 reaches the bottom of the hole 13, the cone 28 is fixed. When the bolt 27 is further tapped, the cut 32 is pushed open by the conical body 28, and the hem of the anchor 26 is strongly pressed against the side wall of the hole 13 as shown in the right side of FIG. Then, if the bolt 27 is tightened, the base 21 is fixed to the concrete surface 1 via the spring washer 29 and the washer 30.

After fixing the base 21 to the concrete surface 1 in this way, the end of the pipe member 4 is connected to the pipe fitting portion at the center of the base 2 as in the conventional one described in FIG. 10 The pipe material 4 is pushed into the pipe fitting portion 10 so that the rod 12 fits into the L-shaped cutout groove 11, and the pipe material 4 is rotated to make the rod 12 water in the L-shaped cutout groove 11. The pipe material 4 is prevented from coming out of the pipe fitting portion 10 by reaching the depth of the flat portion.

In the above description, the case where the base 21 is fixed to the horizontal concrete surface 1 has been described, but the base 21 is fixed to the pair of concrete surfaces 7 and 7 forming the facing walls as shown in FIG. When fixed, it can be fixed in the same way by changing the orientation by 90 degrees.

By fixing the base 21 to the concrete surfaces 1 and 7 and attaching the end portion of the pipe material 4 to the center of the base 2, it is possible to make handrails and scaffolds on the construction site as in the conventional case. it can.

When the construction work is completed and all of the handrails and scaffolds are removed, the bolt 27 of FIG. 1 is pulled out from the female screw 31 (see FIG. 3), and the spring washer 29, washer 30, pipe member 4, and baer 4 are removed. When the work 21 is removed, the anchor 26 and the cone 28 fixed in the hole 13 are left at the site where the construction is completed, but by only filling the hole 13 with mortar, The concrete surface 1 can be made a smooth finished surface.

[0034]

[Effect of device]

 In this invention, diagonally long long holes are formed near the corners of a square plate-shaped base, so that the holes to be drilled on the concrete surface for fixing the base must be precise. There is an effect that it can be easily drilled without alignment.

When the construction work is completed and all of the handrails and scaffolds are removed, the bolts are removed from the anchors and the mortar is filled in the holes drilled in the concrete surface. It has the effect of making the concrete surface a smooth finished surface.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a usage 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 a vertical sectional front view of a main part of an embodiment of the present invention.

FIG. 4 is a perspective view showing an example of a handrail.

FIG. 5 is a vertical sectional front view of another example of a handrail.

FIG. 6 is a perspective view of a conventional temporary fixing device for a pipe material.

FIG. 7 is a vertical sectional front view showing a usage state of a conventional temporary fixing device for pipe materials.

FIG. 8 is a vertical cross-sectional front view showing another usage state of the conventional temporary fixing device for pipe material.

[Explanation of symbols]

 10 Pipe Fitting Part 21 Base 23 Long Hole 25 Long Hole 26 Anchor 27 Bolt 28 Cone 32 Break

Claims (1)

[Scope of utility model registration request] 1. A rectangular plate-shaped base, a long hole diagonally formed near the corner of the base, a bolt inserted in the long hole, and a screw at the tip of the bolt. Combined tubular anchor, a cone inserted into the tip of the anchor, a cut provided in the longitudinal direction at the tip of the anchor, and a cylindrical pipe fitting for fitting a pipe provided on the surface of the base A temporary fixing device for pipe material, comprising: