JP2001073555A - Recessed-section embedding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recessed-section filling tool capable of smoothly finishing the surface of placed concrete by smoothly filling the recessed section of the surface of placed concrete simply. SOLUTION: The recessed-section filling tool is used for filling recessed section with the removal of the cone of a separator formed in a concrete surface after a pair of forms are connected by the separator, concrete is placed between the forms and concrete is cured. The recessed-section embedding tool 1 is formed in a shape coinciding with the recessed section, and a tapped hole capable of being screwed to the male screw section 211 of a rod 21 of the separator is formed while an engaging recessed groove 13, with which the front end section of a driver can be engaged, is recessed at the central section of a base end face. Thus, the surface A2 of placed concrete A can be smoothly finished by simple operation in which the recessed-section filling tool is screwed and moved forward to the male screw section 211 of the rod 21 of the separator projected from the base section of the recessed section into the recessed section of placed concrete A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recess filling device for filling a recess in a cast concrete surface generated by removing a cone of a separator.

[0002]

2. Description of the Related Art In order to construct a concrete structure, first, a pair of molds are juxtaposed at predetermined intervals through a separator formed by detachably screwing a cone to an end of a rod-shaped member. Then, concrete is poured between the pair of molds.

After the concrete poured between the molds has hardened, the pair of molds is removed, and the cone detachably screwed to the end of the rod member of the separator is removed. After that, the mortar is buried in the recess on the surface of the cast concrete caused by removing the cone, thereby filling the recess.

However, the work of embedding the mortar in the recess of the cast concrete is time-consuming and requires a great deal of skill in the embedding work. There was a problem of hanging.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a concrete casting method which smoothly and easily fills a concave portion on the surface of the cast concrete produced by removing the cone of the separator without requiring skill in operation. Provided is a recess filling device capable of finishing the surface to a smooth surface.

[0006]

According to a first aspect of the present invention, there is provided a recess filling device in which a pair of molds facing each other at a predetermined interval are detachably threaded with a cone on a male screw portion at an end of a rod-shaped member. It is a recess filling device for filling a recess formed on the surface of the concrete after the concrete is hardened by casting concrete between the formwork and curing the concrete and removing the cone of the separator. The recess filling device is formed in a shape conforming to the recess, and has a screw hole that can be screwed into the male screw portion of the rod member of the separator from the center of the distal end surface toward the base end surface. In addition, an engagement concave groove is formed in the center of the base end surface so that the distal end of the driver can be engaged.

[0007]

The operation of the recess filling device of the present invention will be described. First, a separator is prepared in which a cone is detachably attached to the male screw portion at the end of the rod-shaped member. Concrete is cast between the pair of formwork.

After the concrete cast between the pair of molds has hardened, the pair of molds is removed, and the cone exposed on the surface of the cast concrete is removed from the male of the rod member of the separator. It is removed by retreating from the screw part and detaching it.

Then, a truncated cone-shaped concave portion conforming to the shape of the cone is formed at a location where the cone of the separator is removed on the surface of the cast concrete, and the separator is formed at the bottom of the concave portion. The male screw portion of the rod member of the separator, into which the cone is screwed, protrudes to the outside.

Then, the screw hole of the recess filling device is screwed and screwed into the male screw portion of the rod member of the separator, and the recess filling device is embedded and integrated in the recess of the cast concrete surface. As described above, according to the recess filling tool, it is possible to fill the recess on the cast concrete surface with the recess filling tool and to finish the cast concrete surface to a smooth surface by a simple operation without requiring skill. ,
Moreover, when screwing and screwing the recess filling tool into the recess of the cast concrete, the tip of the driver is engaged with the engaging groove on the base end face of the recess filling tool, and the driver is filled with the recess. By rotating the tool in the screwing direction of the tool, the recess filling tool can be smoothly and easily screwed and screwed into the recess of the cast concrete to be embedded and integrated.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One example of a recess filling tool of the present invention will be described with reference to the drawings. The recess filling device 1 is shown in FIGS.
As shown in the figure, the shape is in conformity with a concave portion formed on the surface of the concrete to be described later, that is, a frusto-conical shape. A screw hole 12 having a constant depth is formed along the center line of the recess filling device 1 from the male screw portion 12 formed at the tip of a rod-shaped member 21 of the separator 2 described later.
211 is configured to be screwable. Further, at the center of the base end surface 13 of the recess filling device 1, a cross-shaped or single-shaped engagement recess groove 131 is formed so as to be engageable with the tip of the driver.

Next, how to use the recess filling tool 1 will be described. First, the separator 2 used when constructing the cast concrete A in which the recess filling tool 1 is embedded will be described in detail.

As shown in FIGS. 4 and 5, the separator 2 has male screw portions 211, 211 of a rod member 21 of a fixed length having male screw portions 211, 211 formed at both ends, respectively. The cone 22 is detachably screwed to each of the above.

The cone 22 has a truncated cone-shaped cone body 221 with an opening at the tip end thereof, and extends along the center line of the cone body 221 from the tip end face.
1 has a screw hole 221a of a fixed depth that can be screwed into the screw hole 221a, and has a large-diameter proximal end formed with a short rod-shaped portion 222 having the same axis as the screw hole 221a and having a fixed length. The short rod portion 222 has a male screw portion 222a formed at the base end portion thereof.

In order to arrange the pair of molds 3 and 3 at predetermined intervals by using the separator 2, the pair of molds 3 and 3 are arranged side by side with the separator 2 at the center. And the cone body 221 of the separator 2
Are brought into contact with the respective inner surfaces of the molds 3, 3 and the short rod-shaped portions 222, 222 of the cones 22, 22, respectively.
Are inserted into through holes 31, 31 formed in the mold frames 3, 3 so as to penetrate the inner and outer surfaces thereof.

The male screw portion of the short rod portion 222 projecting from the outer surface of the mold 3 through the through hole 31 of the mold 3.
The wedge body 4 is screwed into the wedge body 222a, and the wedge body 4 is fitted on the wedge body 4. Then, the wedge 6 is driven into the wedge driving hole of the wedge body 4 to remove the mold frames 3, 3 from the separator 2 are arranged side by side in an upright state while maintaining a predetermined distance therebetween, and concrete is cast between the formwork 3 and 3 to be hardened. A flutter material 7 is interposed between the inner surface of the contact plate 5 and the outer surface of the formwork 3 facing the inner surface.

After the poured concrete has hardened,
The wedge 6, the backing plate 5, the wedge body 4, and the pair of molds 3, 3 are removed, and are detachably attached to the male screw portions 211, 211 of the rod member 21 of the separator 2 as shown in FIG. The screwed cone 22 is screwed away, detached from each of both ends of the rod-shaped member 21, and removed.

Then, on the surface of the constructed cast concrete A, a truncated-cone-shaped recess A1 is formed due to the removal of the cone body 221 of the cone 22, and the cone is formed at the bottom of the recess A1. The male screw part 211 of the rod-shaped member 21 to which the cone body 221 of the screw 22 has been screwed protrudes outward (see FIG. 5).

The screw hole 12 of the recess filling tool 1 is applied to the male screw portion 211 of the rod member 21 of the separator 2 projecting from the bottom of the recess A1. The distal end of the driver is inserted into and engaged with the concave groove 131, and the driver is rotated in the screwing direction of the concave filling device 1, whereby the concave filling device 1 is screwed to the rod-shaped member 21. Then, the recess embedding tool 1 is buried in the recess A1 until the base end surface 13 of the recess embedding tool 1 and the surface A2 of the cast concrete A are flush with each other (see FIG. 6).

When the recess filling device 1 is screwed with respect to the rod-shaped member 21 until the distal end surface 11 of the recess filling device 1 comes into contact with the inner bottom surface A11 of the recess A1 of the separator 2, the recess filling process is completed. Base surface 13 of fixture 1 and concrete A
Since it is configured so that the surface A2 and the surface A2 are flush with each other,
The recess filling tool 1 until the driver cannot rotate.
Is screwed into the rod-shaped member 21, the base end surface 13 of the recess filling device 1 and the surface A2 of the cast concrete A automatically become flush.

In this way, the recess filling device 1 is screwed into the recess A1 of the cast concrete A and screwed into the male screw portion 211 of the rod member 21 of the separator 2 projecting into the recess A1. In such a simple operation, the recess A1 of the concrete A is filled and the concrete A is filled.
Surface A2 can be finished to a smooth surface.

[0022]

According to the recess filling device of the present invention, a pair of molds facing each other at a predetermined interval are connected to each other by a separator formed by detachably screwing a cone to a male screw portion at an end of a rod-shaped member. Then, concrete is poured between the molds, and after the concrete is hardened, a concave filling device for filling a concave portion accompanying the removal of the cone of the separator formed on the concrete surface, wherein the concave filling device is A screw hole that can be screwed into the male screw portion of the rod member of the separator is formed from the center of the distal end surface toward the base end surface, and the base end surface is formed in a shape matching the concave portion. The center portion is provided with an engaging groove in which the tip of the driver can be engaged, so that the bottom of the concave portion is formed in the concave portion of the cast concrete caused by removing the cone of the separator. The concave filling tool is screwed into the male screw part of the rod member of the separator protruding from the part, and the concave part of the casting concrete is filled with the concave filling tool without special skill by a simple operation such as screwing. The surface of the cast concrete can be finished to a smooth surface by filling.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a recess filling device of the present invention.

FIG. 2 is a perspective view showing a recess filling device of the present invention.

FIG. 3 is a longitudinal sectional view of the present invention.

FIG. 4 is a longitudinal sectional view showing a state where concrete is cast between formwork.

FIG. 5 is a longitudinal sectional view of the cast concrete showing a state in which the cone is detached from the rod-shaped member.

FIG. 6 is a longitudinal sectional view showing a state in which a recess filling device is embedded in the recess of the cast concrete.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 recess filling device 12 screw hole 131 engaging concave groove 2 separator 21 rod-shaped member 211 male screw portion 22 cone 221 cone body 221a screw hole 3 formwork

Claims (1)

[Claims] A pair of molds facing each other at a predetermined interval are connected to a male screw portion at an end of a rod-like member by a separator in which a cone is detachably screwed, and concrete is interposed between the molds. After the concrete is hardened, the concave filling device for filling the concave portion accompanying the removal of the cone of the separator generated on the concrete surface, the concave filling device has a shape matching the concave portion. A screw hole that can be screwed into the male screw portion of the rod member of the separator is formed from the center of the distal end surface toward the base end surface, and the distal end portion of the driver is formed in the center of the base end surface. A recess filling tool, wherein an engaging recess groove with which the recess is engageable is provided.