JPH10196114A - Concrete placing auxiliary instrument and concrete placing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve execution by charging concrete by means of a funnel-like auxiliary instrument providing an upper wide charging opening and a lower narrow discharge opening. SOLUTION: A concrete placing auxiliary instrument A is constituted of an upper sectional rectangular wide short cylindrical charging opening 1, a lower sectional rectangular short cylindrical discharge opening 2, a funnel-like part gradually reducing a flow path of the charging opening 1 to the discharge opening 2, and a reinforcing bar insertion recess part 22 provided on the short side side wall 21 of the discharge opening 2. At the time of use, for instance, a form is attached to the recess part provided on the connection part of a precast concrete foundation, the discharge opening 2 is inserted in a formed opening part, and a reinforcing bar is inserted in the recess part 22 to fix the instrument A. Concrete is charged from the charging opening 1, discharged from the discharge opening 2, and placed in the opening part. Thereby leakage of concrete can be prevented sideward, even if a charging amount of concrete is large, concrete can be prevented from overflowing and working efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete placing aid and a concrete placing method, and is suitable for use in, for example, concrete foundation work.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Publication No. 55-49646.
It is known to build a concrete foundation at a building site, as described in the publication.

Conventionally, as shown in FIGS. 3 and 4, when casting concrete at the joint of the precast concrete foundations (f) and (f), a mold is formed at the joint of the precast concrete foundations (f) and (f). A frame (D) is attached, a cured vinyl sheet (U) is attached, and concrete is cast while plywood (P) is applied to the cast portion as shown in FIG.

3 to 5, (E) shows a protective foam sheet attached to a precast concrete foundation (F), (G) shows a protective foam sheet attached to a formwork (D), (H) is a reinforcing bar provided at the joint, (b)
Is the anchor bolt, (S) is the base formwork, (S) is the spacer block, (S) is the base reinforcing bar, (S) is the base concrete, (T) is the form fixing bolt, and (H) is for tamping. Rod, (te) is a hose for supplying ready-mixed concrete,
(N) is the adhesive layer of the cured vinyl sheet (co).

[0005]

However, in such conventional casting of concrete, when concrete is leaked to the side or when the amount of concrete is increased, the concrete overflows and soils the surroundings. was there. Therefore, it is necessary to dispense the concrete so as not to increase the input amount of the concrete, and the work efficiency is reduced.

[0006] The present invention has been made in view of such problems in the conventional casting of concrete, and an object of the present invention is to prevent concrete from leaking from the side and contaminating the surroundings. It is an object of the present invention to provide a concrete placing aid and a concrete placing method that do not require a small amount of concrete to be poured.

[0007]

In order to achieve the above object, a concrete casting auxiliary device according to the present invention according to claim 1 is provided with a funnel having a wide upper concrete inlet and a narrow lower discharge port. It is characterized by having a shape.

According to a second aspect of the present invention, there is provided a concrete placement assisting device according to the first aspect of the present invention, wherein the lower narrow discharge port has a tubular shape having a rectangular cross section. Things.

According to a third aspect of the present invention, there is provided a concrete placement assisting device according to the second aspect of the present invention, wherein the reinforcing bar opens downward on the short side wall of the cylindrical discharge port having a rectangular cross section. It is characterized in that an insertion notch is provided.

According to a fourth aspect of the present invention, there is provided a concrete pouring method, wherein the concrete pouring assisting device discharge port is provided at a concrete pouring portion, and concrete is poured into a wide concrete pouring port above. It is characterized in that concrete is discharged and concrete is discharged from a narrow discharge port below.

In the present invention, any material can be used for the concrete placing aid of the present invention as long as concrete can be accommodated and flown into the upper wide concrete input port and the lower narrow discharge port. What is not particularly limited, for example, polystyrene, hard vinyl chloride resin, ABS resin, polycarbonate, polyethylene, polypropylene, synthetic resin such as FRP and steel, metal such as aluminum alone, or, They can be used in appropriate combinations.

According to the first aspect of the present invention, since the concrete casting auxiliary device of the present invention has a funnel shape provided with an upper wide concrete inlet and a lower narrow outlet, the lower narrow outlet is provided. Is installed in the concrete casting section and concrete is supplied from the wide concrete inlet above, so that concrete leaks to the side and even if the amount of concrete input increases, the concrete overflows and pollutes the surrounding area. There is no fear and the work efficiency is good.

According to the second aspect of the present invention, since the lower narrow discharge port is formed in a tubular shape having a rectangular cross section, the cylindrical discharge port is inserted and fitted into the concrete placing portion. By doing so, the discharge port can be easily installed in the concrete casting section.

According to the third aspect of the present invention, there is provided a concrete placement assisting device according to the present invention, wherein the recessed portion for inserting a reinforcing bar which opens downward is provided on the short side wall of the cylindrical discharge port having a rectangular cross section. In addition, the cylindrical discharge port can be easily fixed to the concrete casting section by inserting and fitting the cylindrical discharge port into the concrete placing section and inserting and fitting a reinforcing bar into the concave section for reinforcing bar insertion.

[0015] In the concrete casting method according to the fourth aspect, the concrete placing portion is provided with the first, second or third aspect.
The concrete installation auxiliary equipment discharge port described in this section is installed, concrete is injected into the wide concrete input port at the top, and concrete is discharged from the narrow discharge port at the bottom. Even if the input amount is large, there is no risk of concrete overflowing and soiling the surroundings, and the work efficiency is good.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of the concrete placing assisting device of the present invention of the present invention, and FIG. 2 is a perspective view showing a use mode of the concrete placing assisting device of the present invention shown in FIG.

In FIGS. 1 and 2, A is a concrete casting auxiliary device of the present invention, 1 is a short cylindrical inlet having a rectangular cross section provided above the concrete casting auxiliary device A, and 2 is a concrete casting auxiliary device. A narrow short cylindrical discharge port having a rectangular cross section provided below the device A, and a wide short cylindrical input port 1
The flow path is formed in a funnel shape in which the flow path is gradually reduced from the lower part to the narrow short cylindrical discharge port 2 below.

The short side wall 21 of the cylindrical discharge port 2 is provided with a recess 22 for inserting a reinforcing bar. 3 is a substantially trapezoidal side plate 3
1 is a handle provided on the handle 1. The length W1 of the short side wall 21 of the cylindrical discharge port 2 is 85 mm, and the length L1 of the long side wall 23 of the cylindrical discharge port 2 is 755 mm.

Since the concrete placing aid A of the present invention shown in FIGS. 1 and 2 has the above-mentioned structure, when used, as shown in FIG. The formwork 5 is attached to the concave portion 41 formed in the joint portion, the handle 3 of the concrete placing aid A is gripped in the formed opening portion 42, and the short narrow cylindrical discharge port 2 below is indicated by an arrow. The narrow short cylindrical discharge port 2 below the concrete placing auxiliary tool A is fixed to the opening 42 by inserting the reinforcing bar 6 into the reinforcing bar insertion recessed portion 22 while inserting the reinforcing bar 6.

Reference numeral 43 denotes a protective plate-like foam attached to the surface of the precast concrete foundation 4, reference numeral 51 denotes a protective plate-like foam attached to the inner surface of the formwork 5, and reference numeral 61 denotes a wrap around the reinforcing bar 6. Stirruped stirrup. The width W2 of the opening 42 is 90 mm, and the length L2 of the opening 42 is 760 mm
It is. Therefore, the short cylindrical discharge port 2 of the concrete placing assisting device A is fitted into the opening 4 with almost no gap, and is in a stable state.

In such a state, when concrete is poured from the wide short cylindrical inlet above the concrete placing assistant A, concrete is discharged from the lower cylindrical outlet 2 and the concrete is poured into the opening 42. Can be set up. At this time, even if the concrete leaks to the side or the amount of concrete input increases, there is no risk of the concrete overflowing and soiling the surroundings, and the work efficiency is good.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration of the present invention is not limited to the illustrated embodiment, and design changes within the scope of the present invention may be made. Included in the invention.

For example, instead of using the concrete placement assisting device A of the present invention for concrete placement at the joint of the precast concrete foundations 4 and 4 as in the illustrated embodiment, concrete placement of a normal concrete foundation is performed. It may be used for installation.

[0024]

According to the first aspect of the present invention, a narrow discharge port below the concrete placing aid of the present invention is installed in the concrete placing part, and a wide concrete inlet above the concrete placing part. By supplying the concrete from the concrete, there is no risk of the concrete leaking out to the side or overflowing of the concrete even if the amount of the concrete is increased, thereby contaminating the surroundings, and the work efficiency is good.

In the concrete casting auxiliary device according to the second aspect of the present invention, since the lower narrow discharge port is formed in a tubular shape having a rectangular cross section, the cylindrical discharge port is inserted and fitted into the concrete placing portion. By doing so, the discharge port can be easily installed in the concrete casting section.

In the concrete placement assisting device according to the third aspect of the present invention, the recessed portion for inserting a reinforcing bar which opens downward is provided on the short side wall of the cylindrical discharge port having a rectangular cross section. In addition, the cylindrical discharge port can be easily fixed to the concrete casting section by inserting and fitting the cylindrical discharge port into the concrete placing section and inserting and fitting a reinforcing bar into the concave section for reinforcing bar insertion.

Further, in the concrete casting method according to the fourth aspect, the concrete placing portion is provided with the first, second or third aspect.
The concrete installation auxiliary equipment discharge port described in this section is installed, concrete is injected into the wide concrete input port at the top, and concrete is discharged from the narrow discharge port at the bottom. Even if the input amount is large, there is no risk of concrete overflowing and soiling the surroundings, and the work efficiency is good.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a concrete placing assistant according to the present invention.

FIG. 2 is a perspective view showing a mode of use of the concrete placing assistant of the present invention shown in FIG.

FIG. 3 is a perspective view showing a conventional concrete casting mode.

FIG. 4 is a perspective view showing a conventional concrete casting mode.

FIG. 5 is a perspective view showing a conventional concrete casting mode.

[Description of Signs] 1 Input port 2 Discharge port 22 Concave notch 3 Handle

Claims (4)

[Claims] 1. A concrete casting auxiliary tool characterized by having a funnel shape provided with an upper wide concrete inlet and a lower narrow outlet. 2. The concrete placement assisting device according to claim 1, wherein the lower narrow discharge port has a tubular shape with a rectangular cross section. 3. The concrete placement assisting device according to claim 2, wherein a concave notch for inserting a reinforcing bar, which opens downward, is provided on a short side wall of the cylindrical discharge port having a rectangular cross section. 4. A concrete pouring auxiliary tool discharge port according to claim 1, 2 or 3 is installed in a concrete pouring section, and concrete is poured into a wide concrete pouring port above.
A concrete casting method characterized by discharging concrete from a lower narrow discharge port.