JPH08144515A - Positioning fixing device of sleeve - Google Patents

Abstract

PURPOSE: To promote safety work on a slab by arranging a sleeve positioning tool where a screw shaft is protrusively arranged in the upper surface center, arranging a recessed groove on the under surface side by forming a side surface in a circular trapezoidal shape, and installing a sleeve fixing tool having a through hole in the center. CONSTITUTION: After a slab formwork is formed, a sleeve positioning tool 2 is placed in a marking position on a sheathing board, and is fixed to the sheathing board by driving nails 9 in small holes 8. Next, after assembling of reinforcements in the formwork is finished, the sleeve positioning tool 2 is inserted into and fitted to a sleeve 1, and a screw shaft 6 is inserted into a through hole 14, and a sleeve fixing tool 3 is placed on the sleeve 1. Next, a nut 15 is fastened and fixed to a recessed part 16, and after assembling is finished, concrete is placed. Afterwards, the slab formwork is separated, and in that case, the positioning tool 2 is put in a condition of being connected to the fixing tool 3, and the fixing tool 3 is put in a condition of being held in a slab. In succession, after the formwork is separated, the fixing tool 3 and the positioning tool 2 are pulled out. After a vertical pipe is inserted into the through hole for piping by the sleeve 1 and the fixing tool 3, concrete is filled and repaired.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for positioning and fixing a sleeve for preliminarily providing through holes for facility piping in a concrete skeleton to a dam plate.

[0002]

2. Description of the Related Art When equipment piping is installed in a concrete skeleton, it is difficult to chip off the required parts of concrete after the skeleton is completed. By temporarily fixing it and then pouring concrete into it, concrete is eliminated in the cylindrical portion to form a through hole. Therefore, conventionally, after forming the slab formwork,
The pipe position is marked on the barrier plate with a felt pen, etc., and after the rebar assembly is completed in this form, the cylindrical paper tube is fixed to the marked position by nailing. It was The upper end of the paper tube is covered with an adhesive tape or a vinyl cap (void cap) to prevent slag (cement paste).

[0003]

However, this conventional method has the following problems. (B) The weir plate marked by the marking work is
It will be reused on the upper floors, but as the floors rise, this marking overlaps double and triple, making it very difficult to see. (B) When the paper tube is nailed to the weir plate, the paper tube may be deformed or misaligned, so that a highly accurate through hole may not be provided. (C) After solidification of slab concrete, the adhesive tape may come off or the cap may come off during the work on the slab, and the upper part of the paper tube may be open, which causes rainwater to flow down to the floor below. , There may be a hindrance to the finishing work on this lower floor. (D) Further, if the upper part of the paper core is open, it is very dangerous because a worker's foot is caught in it. (E) Although the paper tube is damaged by moisture, it is removed before piping, but this removal work requires time, and since the removed paper tube cannot be reused, it becomes an industrial waste and takes time to process.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to set a sleeve to a predetermined size without resorting to marking that is confusing later. A sleeve positioning and fixing device that can be correctly and easily placed in position and can be fixed without deforming or misaligning the sleeve, and can perform safety work on the slab and prevent rain leakage downstairs. To provide.

[0005]

As a means for achieving the above object, in a sleeve positioning and fixing device according to claim 1 of the present invention, a pipe or pipe joint made of plastic is used as a sleeve, and the sleeve is provided inside the lower end of the sleeve. It has an outer diameter to be fitted and is formed in a substantially disc shape that can be placed on the weir plate, a screw shaft projects from the center of the upper surface, and a small hole for nailing to the weir plate is provided on the upper surface. A sleeve positioning device; a side surface is formed into a substantially circular trapezoidal shape as a forming surface of a pipe through hole upper portion, a concave groove for fitting the upper end portion of the sleeve is formed on the lower surface side, and the screw is formed at the center. And a sleeve fixing tool having a through hole through which the shaft is inserted.

In the sleeve positioning / fixing device according to the present invention, the sleeve positioning device includes a screw head stock in which the screw shaft is projectingly provided at the center of the upper surface of a seat portion having a small hole for screwing or nailing to the dam plate. , An outer diameter that fits inside the lower end of the sleeve, and a center hole through which the threaded shaft portion of the threaded shaft is fitted in the center of the sleeve. And a positioning plate made of plastic that can be placed.

According to a third aspect of the present invention, there is provided a sleeve positioning and fixing device, wherein the positioning plate has a detachable portion for forming an outer diameter concentric with the central hole so that the outer diameter can be fitted inside the lower end of the sleeve smaller than the sleeve. It has a structure.

According to a fourth aspect of the present invention, there is provided a sleeve positioning and fixing device in which the sleeve fixing member is made of plastic and has an inverted truncated cone shape.

According to a fifth aspect of the present invention, there is provided a sleeve positioning and fixing device, wherein a concave portion concentric with the through hole is provided on the upper surface of the sleeve fixing tool so as to accommodate at least the head portion of the screw shaft, and the concave portion is fitted into the concave portion. It was configured to have a cap to wear.

[0010]

In the sleeve positioning and fixing device according to the first aspect of the present invention, after the slab formwork is assembled, the sleeve positioning tool is screwed or nailed to the planned piping position on the dam plate, so that a long time for assembling the reinforcing bar is required. You can set the sleeve without any mistake after the passage even if there are other markings. The sleeve fixing tool is such that the screw shaft is inserted through the through hole while covering from above the sleeve fitted to the sleeve positioning tool, and the upper end of the sleeve is fitted in the groove, and the screw shaft tip is tightened with a nut. The sleeve can be easily fixed on the piping position. By pouring concrete in this state, the through hole for piping is formed by the sleeve and the sleeve fixture. In this case, the upper surface of the sleeve is covered with the sleeve fixing tool, which prevents rain leakage downstairs and
Safe work can be performed without the operator's foot or the stepladder's leg getting caught. Since the sleeve positioning tool will remain in the sleeve together with the screws or nails when the formwork is removed, the sleeve positioning tool can be easily managed, and the surface of the weir plate does not have nails or the like, which makes the maintenance easier. Become.

In the sleeve positioning and fixing device according to the second aspect of the present invention, first, the screw head is attached to the marking position by fixing the seat portion with wood screws or nails. After that, insert the positioning shaft by inserting the screw shaft into the center hole. Since this positioning board is made of plastic, it is lightweight and easy to carry to a higher floor, and even if it is left for a predetermined period of time, it does not rust and each fitting part can be fitted smoothly.

In the sleeve positioning and fixing device according to the third aspect of the present invention, the detachable portion can be detached and used for a sleeve having a small diameter.

In the sleeve positioning and fixing device according to the fourth aspect of the present invention, even when the concrete is placed until it is flush with the upper surface of the sleeve fixing tool, the sleeve fixing tool is formed into an inverse taper, so that it can be easily removed at any time. be able to. In addition, since it is made of plastic, it has good releasability and can be easily maintained.

In the sleeve positioning and fixing device according to the fifth aspect of the present invention, since the tightening portion of the sleeve fixing tool by the screw shaft is protected by the cap, it is possible to prevent the slag from adhering to the screw shaft or the concave portion during concrete pouring. , The screw part can be easily attached and detached.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing a sleeve positioning and fixing device A of the first embodiment, in which 1 is a sleeve, 2 is a sleeve positioning tool, and 3 is a sleeve fixing tool.

The sleeve 1 is for removing concrete into a cylindrical shape on the weir plate 4 when concrete is cast into a slab formwork, and both ends of a vinyl pipe having a diameter capable of inserting a vertical pipe are parallel to each other. It is formed by cutting so that

The sleeve positioning device 2 is fixed on the barrier plate 4, has an outer diameter substantially the same as the inner diameter of the sleeve 1, and is made of a metal plate as shown in FIG. It is formed in a substantially disc shape. In the figure, 5 is a nut fixed to the center of the upper surface, 6 is a screw shaft detachably engaged with the nut 5, and threaded portions 7 are provided at both ends. Reference numeral 8 is a small hole penetrating in the vertical direction, and a plurality of small holes 8 are arranged on a concentric circle centered on the nut 5. 9 is a nail.

The sleeve fixture 3 is for fixing the upper end of the sleeve 1 by fitting it, and is formed of plastic in the shape of an inverted truncated cone, and the lower surface 10 has the sleeve 1 as shown in FIG. Ring-shaped groove 1 for fitting the upper end of 1
1 is formed, and the inner diameter side of the groove 11 is the sleeve 1
The diameter is very slightly smaller than the inner diameter of the sleeve 1, and the outer diameter side is provided with a size that allows a gap of several millimeters with respect to the outer diameter of the sleeve 1. Reference numeral 12 in the drawing denotes a groove when a sleeve having a diameter smaller than that of the sleeve 1 is used, and is provided deeper and concentrically than the groove 11.

The outer diameter of the sleeve fixture 3 is the sleeve 1.
Larger than appropriate (for example, larger than the maximum diameter of the fitting part of the teeth or socket that is fitted and connected to the outer diameter side of the pipe)
It is formed so that an appropriate protruding surface 13 is formed on the outer peripheral portion of the lower surface. In the figure, 14 is a through hole provided at the center with a size allowing the screw shaft 6 to be inserted, 15 is a nut screwed onto the upper end of the screw shaft 6, and 16 is a size for accommodating the nut 15 on the upper surface 17 side. The reference numeral 18 denotes a recess provided concentrically with the through hole 14, 18 denotes a flat washer, and 19 denotes a plastic cap which is detachably fitted into the recess 16 to seal the same.

The sleeve fixture 3 has an appropriate thickness so that it will not be damaged even when an operator rides on it or hits a leg such as a stepladder during various works, and the side surface of the sleeve fixture 3 is formed on the molding surface 10a above the through hole for piping. Therefore, the height of the sleeve is such that the lower end side is in contact with the upper surface of the barrier plate 4 and the recessed groove 11 is fitted in the upper end and the sleeve fixture 3 is placed, The upper surface 17 of the sleeve fixture 3 is set to be flush with the slab 20. Further, the screw shaft 6 is also set to a length such that the screw portion 7 at the upper end does not protrude from the recess 16.

FIG. 4A shows a seal ring 21 made of a sponge-like rubber material and having an inner diameter slightly smaller than that of the piping material, and is fixed to the inside of the lower portion of the sleeve 1 with an adhesive before piping. Further, FIG. 4B shows a large-sized seal ring 24 for sealing a wider gap than that, in which a sealing portion 22 made of a sponge-like rubber material is fixed by a vinyl ring 23 as described above.

Next, the work procedure during use will be described with reference to FIG. First, after forming the slab form, the sleeve positioning tool 2 is placed at the marking position on the dam plate 4, and the nail 9 is hammered into the small hole 8 to fix the dam plate 4. At this time, the screw shaft 6 is attached after the reinforcing bar is assembled, but if it does not interfere with this reinforcing bar assembly,
At this time, it may be attached.

After the rebar assembly in the form is completed, the sleeve 1 is inserted into the sleeve positioning tool 2 and the lower end is fitted. Further, while inserting the screw shaft 6 into the through hole 14,
The sleeve fixture 3 is placed on the sleeve 1. Then, in the concave portion 16, a flat washer 18 is laid and the nut 1
5 is tightened and fixed with a box spanner etc. (Fig. 5 (a))
reference).

After the assembly is completed, concrete is poured. At this time, concrete upper surface and sleeve fixture 3
It will be placed until the upper surface of the
(See (b)).

After the lapse of a predetermined period, the slab formwork is removed downward. At this time, the sleeve positioning tool 2 is connected to the sleeve fixing tool 3 by the screw shaft 6, and the protruding surface 13 of the sleeve fixing tool 3 is locked to the slab 20 so that the sleeve positioning tool 2 resists the pulling-out force and enters the slab. Retained (Figure 5)
(C)).

After the mold is removed, the sleeve fixture 3 is pulled out upward. At this time, the lower sleeve positioning device 2 can also be integrally pulled upward through the inside of the sleeve 1 by the screw shaft 6. The slab 20 has a through hole for piping formed by the sleeve 1 and the sleeve fixture 3, and therefore the vertical pipe 25 is inserted into this through hole for piping. In this case, a gap is created between the vertical pipe 25 and the sleeve 1. If this gap is small, the seal ring 21 shown in FIG.
Is fixed inside the lower part of the sleeve 1 with an adhesive. After that, the repairing concrete 26 is filled from the upper end opening portion for repairing (see FIG. 5D). Since the upper part of this through hole for piping is a hole for the sleeve fixture 3 having a diameter larger than that of the sleeve, it has a larger diameter than its lower part. It can be installed around the hole without hunching like.

As described above, in the sleeve positioning / fixing device A of this embodiment, the sleeve positioning tool 2 is fixed in advance at the marking position. It's fine, and even if there are a lot of old markings, you won't make a mistake.

Since the sleeve 1 can use a vinyl pipe which is usually used as a piping material, a large amount of residual material generated at a construction site can be used as long as the dimensions are adjusted, and waste and cost can be reduced. Further, unlike a paper tube, it is not necessary to dispose of it after use, which saves labor. The sleeve 1 can be quickly and easily fixed by simply tightening the sleeve fixture 3 with the screw shaft 6. Further, since there is no deformation or misalignment, it is possible to always provide the through hole with high accuracy.

The upper surface of the sleeve 1 is covered with a sturdy sleeve fixing tool 3, and the upper surface of the sleeve 1 is not opened because it is fixed by a screw shaft.
Therefore, a worker who works on the slab can perform safe work. In addition, the sleeve fixture 3 has a recess 16
Since the cap is covered with the cap 19, rain leakage can be prevented. Therefore, the finishing work in progress on the lower floor can be smoothly performed.

A gap is sealed between the vertical pipe 25 and the sleeve 1 by the seal ring 21, so that concrete can be filled and repaired without applying a veneer plate or the like. After the repair, it is not necessary to remove it like a plywood board, so that labor can be saved. Since the assembly can be completed in a short time as a whole, it is possible to reduce manpower, shorten the construction period, and reduce the cost.

Next, a second embodiment will be described with reference to FIGS.
The same components as those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted. In the figure, 28 is a positioning plate made of plastic, and the center hole 28a is at the center.
The lower surface has a recess 28b concentric with the central hole 28a.
And a double groove 28 that matches the inner diameter of the sleeve with a different diameter.
c and 28d are provided, and perforations 28e that are separated by the concave grooves 28c and 28d are provided on the upper surface. 28f in the figure
Are ring-shaped removal parts that will be removed when they are not needed. (In addition, do not provide perforations or concave grooves, make them ring-shaped from the beginning, and insert the necessary parts to use. Or you can use different colors).

In the figure, 29 is a screw headstock, and the recess 28
a seat portion 29a fixed on the barrier plate 4 in a state of being fitted to b
And a female screw portion 29 fixed to the center of the upper surface of the seat portion 29a.
b, a small hole 8 and a screw shaft 6. Then, the outer diameter of the female screw portion 29b is fitted into the center hole 28a. The female screw portion 29b is penetrated downward to remove water and dust.

Next, another embodiment will be described with reference to FIGS. The same components as those in the above-mentioned embodiment are designated by the same reference numerals as those in the above-mentioned embodiment, and the description thereof is omitted. FIG. 7A shows a state in which a plastic sleeve 30 having a diameter smaller than that of the above-mentioned embodiment is used, but a length thereof is longer. In this case, groove 1
It is used by being fitted into the groove 12 having a deeper depth than 1 and a small diameter. In this case, since the sleeve 30 has a small diameter, the sleeve positioning tool 2 is also small.

In FIG. 7B, a pipe joint 31 is attached to the upper end of the sleeve 30 and a vinyl pipe 32 is extended upward. FIG. 8 shows the pipe joint 33 and the sleeve 3
The case where it is used as 0 is shown. In this case, the vinyl pipes 32, 32 are extended vertically.

The embodiments of the present invention have been described above.
The specific configuration of the present invention is not limited to this embodiment, and any change in design or the like without departing from the gist of the present invention is included in the present invention.

For example, in the sleeve positioning device 2, the screw shaft 6 is projected from the nut 5 provided at the center of the upper surface, but the present invention is not limited to this, and the screw shaft 6 may be directly fixed by welding or the like.

The shape and number of the concave grooves 11 and 12 can be set arbitrarily.

Although the sleeve fixture 3 is set to a size such that concrete is placed up to the same position as the upper surface of the sleeve fixture 3, it may be set to a size protruding from the concrete.

[0039]

As described above, in the sleeve positioning and fixing device according to the first aspect of the present invention, the sleeve positioning tool is nailed to the planned piping position on the dam plate because of the above construction. By doing so, even after a long time has passed in assembling the reinforcing bar, even if there are many other old markings and manpower changes, the sleeve can be accurately and easily arranged in the correct position. The sleeve fixture is made by inserting the screw shaft into the through hole while covering it from above the sleeve fitted to the sleeve positioning device, and fitting the upper end of the sleeve into the groove, and tightening the screw shaft tip with a nut. It can be easily fixed on the piping position without deforming or shifting the position. By pouring concrete in the above state, the through hole for piping can be formed by the sleeve and the sleeve fixture. In this case, since the upper surface of the sleeve is covered with the sleeve fixing tool, it is possible to prevent rain leakage downstairs and to proceed without stopping the work. In addition, it is possible to perform safety work on the slab. Since the sleeve positioning tool will remain in the sleeve together with the nail when the frame is removed, the sleeve positioning tool can be easily managed, and the surface of the dam plate does not have nails or the like, which makes the maintenance easier. The effect of is obtained.

In the sleeve positioning and fixing device according to the second aspect of the present invention, since it is constructed as described above, since it is made of plastic and lightweight, it is easy to carry it to a higher floor, and it is left standing for a predetermined period. It is possible to obtain an effect that each fitting portion can be fitted smoothly without rusting.

In the sleeve positioning and fixing device according to the third aspect of the present invention, because of the above construction, the detaching portion can be detached and used for a sleeve having a small diameter, and the sleeve can be replaced easily. Further, when a part is damaged, it is economical because the replacement part is small.

In the sleeve positioning and fixing device according to the fourth aspect of the present invention, even if the concrete is placed until it is flush with the upper surface of the sleeve fixing tool, the fixing tool is formed into a reverse taper, so that it can be easily removed at any time. You can Also,
Because it is made of plastic, it has good releasability,
An effect such as easy maintenance can be obtained.

In the sleeve positioning and fixing device according to the fifth aspect of the present invention, since the tightening portion of the sleeve fixing tool by the screw shaft is protected by the cap, it is possible to prevent the slag from adhering to the screw shaft or the concave portion during concrete pouring. It is possible to obtain the effect that the screw portion can always be easily attached and detached.

[Brief description of drawings]

FIG. 1 is an exploded view of a sleeve positioning and fixing device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a sleeve positioning tool of the first embodiment.

FIG. 3 is a bottom view showing the sleeve fixture of the first embodiment.

FIG. 4 is a perspective view showing a seal ring of the first embodiment.

FIG. 5 is an explanatory view showing the work procedure of the sleeve positioning and fixing device of the first embodiment in the order of (a), (b), (c), (d).

FIG. 6 is an explanatory view showing a sleeve positioning tool of a second embodiment.

FIG. 7 is an explanatory diagram showing a usage state of another embodiment.

FIG. 8 is an explanatory diagram showing a usage state of another embodiment.

[Explanation of symbols]

 A sleeve positioning and fixing device 1,30,31 sleeve 2 sleeve positioning device 3 sleeve fixing device 4 dam plate 6 screw shaft 8 small hole 10a molding surface above the through hole for piping 11, 12 concave groove 14 through hole 16 concave portion 19 Cap 20 Slab 25 Vertical pipe (piping) 28 Positioning board (positioning tool) 28a Center hole (positioning tool) 28b Recess (positioning tool) 28c, 28d Groove (positioning tool) 28e Perforation (positioning tool) 29 Screw headstock ( Positioning tool 29a Seat (positioning tool) 29b Female thread (positioning tool)

Claims (5)

[Claims] 1. A pipe or pipe joint made of plastic is used as a sleeve, and it has an outer diameter that fits inside the lower end of the sleeve and is formed into a substantially disc shape that can be placed on a dam plate, and has a screw at the center of the upper surface. A sleeve positioning tool having a shaft projecting from the shaft and having a small hole for nailing to the weir plate on the upper surface; a side surface serving as a molding surface for the upper portion of the through hole for piping and formed into a substantially circular trapezoidal shape; A positioning groove for fixing the sleeve, wherein a concave groove for fitting the upper end portion of the sleeve is formed on the side, and a sleeve fixing tool having a through hole through which the screw shaft is inserted is provided at the center. apparatus. 2. The sleeve positioning tool is fitted inside a lower end of the sleeve, and a screw headstock in which the screw shaft is projected in the center of the upper surface of a seat portion having a small hole for screwing or nailing to the dam plate. A positioning board made of plastic, which has an outer diameter and has a central hole through which the screw shaft portion of the screw head is fitted in the center and which can be mounted on the dam plate from above the seat portion. The positioning and fixing device for the sleeve according to claim 1, further comprising: 3. The positioning plate has a detaching portion for forming an outer diameter concentric with the central hole, which can be fitted inside a lower end of a sleeve smaller than the sleeve.
Positioning and fixing device for the described sleeve. 4. The sleeve positioning and fixing device according to claim 1, wherein the sleeve fixing member is made of plastic and formed into an inverted truncated cone shape. 5. The upper surface of the sleeve fixture is provided with a recess concentric with the through hole at least sized to accommodate the head of the screw shaft, and a cap fitted into the recess. Positioning and fixing device for the sleeve according to 1, 2, 3 or 4.