JP2000045522A - Concrete placing device for upper surface of wall body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and rapidly place and smooth concrete of the upper surface of a concrete wall body. SOLUTION: Ready-mixed concrete C in a hopper 21 is continuously placed in a form 10 while transferring the hopper on the upper surface edges 13a, 14a of the form 10 by casters 22. Since a guide member 27 inserted in the placing space of concrete of the form 10 is formed at the lower end of the hopper 21, a concrete placing implement 20 is guided so that the concrete discharge opening is always positioned above the placing space. A concrete leveling member 28 installed at the lower end of the hopper 21 smooths the ready-mixed concrete C placed in the form 10 so as to scrape the upper face CF, in accordance with the transfer of the concrete placing implement 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for forming a top end of a concrete wall such as a handrail wall by casting concrete in place.

[0002]

2. Description of the Related Art When a concrete wall, such as a handrail wall of a balcony in a reinforced concrete building, is constructed by cast-in-place of ready-mixed concrete, the top end surface of the wall is
Using a temporary hopper made of plywood, etc., put ready-mixed concrete at the top of the concrete placement space of the formwork,
It is formed by smoothing the upper end of the ready-mixed concrete by a plate or by hand along the top end surface of the formwork. The excess concrete scraped out by the concrete leveling operation is stored in another container prepared in advance and processed.

[0003]

The following problems are pointed out in the above prior art. First, since the temporary hopper made of a plywood or the like is difficult to use repeatedly, it must be manufactured one by one each time a handrail wall of each floor in a high-rise building is constructed. In addition, when the concrete placing position by the temporary hopper is moved, a part of the concrete is easily spilled out of the formwork. Also, the casting of the ready-mixed concrete by the temporary hopper and the work of leveling the top end face of the ready-mixed concrete by hand are separate processes, and the excess concrete generated by this leveling work is put into another container for processing. Work is also required, resulting in poor work efficiency.

The present invention has been made in view of the above circumstances, and a technical problem of the present invention is to make it easy to cast concrete on the top end of a concrete wall and to level the concrete. The object is to enable quick operations.

[0005]

Means for Solving the Problems As means for effectively solving the above-mentioned technical problems, a concrete placing machine for a top end of a wall according to the present invention can accommodate a required amount of concrete and has a lower end. A hopper having an openable / closable concrete discharge port at a portion thereof, a traveling support member for movably supporting the hopper along a top edge of a wall body forming formwork, and the wall body provided at a lower end of the hopper A concrete leveling member for leveling the upper surface of the concrete in the construction form to a predetermined height as the hopper moves.

[0006] This concrete placing machine for the top of the wall body supplies the concrete in the hopper to the inside of the form frame through the concrete discharge port while moving on the top edge of the forming frame for the wall body by the traveling support member. Is what you do. in this case,
By forming a guide member at the lower end of the hopper, which is inserted into the concrete casting space by the formwork and regulates the traveling of the traveling support member in the width direction of the casting space, Since the moving direction is guided in the extension direction of the top edge of the formwork and the concrete discharge port is always on the casting space, concrete does not spill out of the formwork.

[0007] The concrete leveling member provided at the lower end of the hopper draws a trajectory parallel to the extension direction of the top edge along with the movement of the concrete setting device by the traveling support member. Level the top of the concrete poured into For this reason, the concrete placement at the top end of the wall body and the leveling work of the upper surface are performed simultaneously.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 show a preferred embodiment of a concrete placing machine for a ceiling of a wall according to the present invention. First, in FIGS. It is a formwork for constructing a concrete wall such as a veranda handrail wall in a reinforced concrete building such as a house. The formwork 10 includes a pair of formwork plates 11 and 12 that are erected in parallel and vertically to partition the concrete casting space 10S, and a supporting structure that supports and reinforces the formwork plates 11 and 12 from outside. 13, 14 and the formwork plate 11,
It is composed of a number of separators (not shown) and the like connecting the 12 with each other at a fixed interval.

A concrete placing machine 2 according to this embodiment
0 is made of steel plate and has a concrete outlet 20 at the lower end.
A is formed on the hopper 21 and the top edges 13a, 1 of the supports 13, 14 in the above-described formwork 10.
And a caster 22 as a running support member supported on the top 4a. The hopper 21 includes a pair of substantially isosceles triangular end walls 21 a and 21 b each having an upper end as a base.
a, 21b comprising a pair of substantially rectangular inclined side walls 21c, 21d extending between mutually corresponding oblique sides, and a handle 23 is attached to an outer surface of each of the end walls 21a, 21b. Side walls 21c, 21
A handle 24 is attached to each upper edge of d.

A pair of front and rear (four in total) pedestals 25 made of a steel plate are welded to the left and right side walls 21c and 21d of the hopper 21, and a long hole extending in the left and right direction in FIG. A caster 22 is fixed to the bottom wall of each pedestal 25 via a bolt 26 inserted into the elongated hole and a nut 26a screwed to the bolt 26. The caster 22 is attached so that its substantially horizontal center axis is parallel to both end walls 21a and 21b of the hopper 21, that is, the end wall 2 is provided.
The vehicle travels so that 1a and 21b are in the front-rear direction and the side walls 21c and 21d are in the left-right direction.

At the lower ends of both side walls 21c and 21d of the hopper 21, the right and left sides of the concrete discharge port 20A are inserted into the upper opening of the concrete casting space 10S of the formwork 10 as shown in FIG. Opening edge member 1
Guide member 2 brought into a state close to inner surfaces of 3b and 14b
7 are formed respectively. The guide members 2 are provided at the lower end portions of the front and rear end walls 21a and 21b of the hopper 21.
A plate-shaped concrete leveling member 28 is formed between the front and rear ends of the first and the seventh and the second 27. The lower edge of the concrete leveling member 28 is located between the opening edge members 13b and 14b in the state of FIG. 1 or FIG. 2 in which the concrete setting device 20 is placed on the formwork 10, and one of the opening edge members is provided. 13
The shape is inclined so that the b side becomes lower.

A substantially horizontal slit 21e is formed below one end wall 21a of the hopper 21, and an insertion cover 29 made of a steel plate can be inserted into the hopper 21 from the slit 21e. This insertion lid 29
In the insertion state shown in FIG. 2 or FIG. 3, both edges in the width direction have inclined side walls 21 c, 2 in the hopper 21.
1d, it is supported so as to be laid horizontally between the inner side surfaces near the lower end, whereby the concrete discharge port 20A which is elongated in the front-rear direction of the lower end of the hopper 21 can be closed. Reference numeral 29a in FIG. 3 is provided at the outer end of the insertion lid 29.
This is a handle for inserting and removing the.

As shown in FIG. 1, in the concrete placing machine 20 of the present embodiment constructed as described above, the guide members 27 on both sides of the concrete outlet 20A are inserted into the upper opening of the concrete placing space 10S. In this state, the mold 10 is placed on both top edges 13a and 14a. Also, the mounting position of the caster 22 with respect to each pedestal portion 25 is set within the range of the length of the long hole through which the bolt 26 is inserted so that each caster 22 is reliably placed on the both top edges 13a and 14a. Can be adjusted left and right.

An appropriate amount of ready-mixed concrete C is put into the hopper 21 from a concrete pump truck (not shown) via a hose. At this time, the ready-mixed concrete C
In order to prevent accidental dropping from the concrete discharge port 20A, the insertion cover 29 is inserted and the concrete discharge port 20A is closed. The setting of the concrete placing machine 20 on the formwork 10 may be performed after the ready-mixed concrete C is put into the hopper 21.

Next, the insertion lid 29 is pulled out to open the concrete discharge port 20A, and the concrete placing machine 20 is moved on the top edges 13a and 14a of the supports 13 and 14 in the formwork 10. This movement can be effected, for example, by pulling (or pushing) the handle 23 or by connecting a hose extending from the concrete pump truck to the hopper 21.
And moving the concrete pump truck in this state.

When the concrete placing machine 20 is moved, for example, each handle 24 provided on the upper edge of the hopper 21 is used.
In such a method, the danger of falling from the formwork 10 can be prevented by slinging the form 10 on a wire rope such as a crane. The center axis of each caster 22 is the top edge 13a, 14 of the support 13, 14 in the formwork 10.
a, and the guide members 27 on both sides of the concrete discharge port 20A are
Are in close proximity to the inner side surfaces of the opening edge members 13b, 14b, so that the top edge 13a, 1
4a and the concrete outlet 20
A is guided so as to be surely positioned at the upper end opening of the casting space 10S in the formwork 10.

As described above, the concrete placing machine 20
Moves along the top edges 13a and 14a of the formwork 10, the ready-mixed concrete C in the hopper 21 is discharged from the concrete discharge port 20A into the casting space 10S in the formwork 10.
Is continuously supplied. In the casting space 10S,
Since the concrete C 'has already been cast by a concrete pump or the like to a height near the upper end opening, the ready-mixed concrete C supplied from the concrete casting machine 20 is cast on the previously cast concrete C'. Is inherited.

The concrete leveling member 28 provided at the lower end of the hopper 21 is used to remove the ready-mixed concrete C supplied from the concrete discharge port 20A into the formwork 10 as the concrete placing device 20 moves. It wears off between the opening edge members 13b and 14b of the frame 10. Therefore, in parallel with the placement of the ready-mixed concrete C, the upper surface CF of the ready-mixed concrete C is leveled so that the opening edge member 13b side becomes lower in accordance with the movement locus of the concrete leveling member 28. You.

When the placing of the ready-mixed concrete C is finished, the concrete supply from the concrete discharge port 20A is cut off by inserting the insertion lid 29 from the slit 21e of the end wall 21a of the hopper 21 to thereby stop the concrete placing device. 20 is lowered from the mold 10. Hopper 2
The surplus concrete remaining in 1 is carried out by this concrete placing machine 20 and disposed.

After the concrete placing machine 20 is moved to the movement end position on the form 10, the insertion cover 29 is moved.
When the fall of the ready-mixed concrete C from the hopper 21 is interrupted by the
And since the amount of ready-mixed concrete corresponding to the volume of the space (concrete discharge port 20A) surrounded by the concrete leveling member 28 remains on the formwork 10, after the concrete placing machine 20 is lowered from the formwork 10, The remaining concrete must be removed, but if the insertion cover 29 is inserted at an appropriate position immediately before the concrete placement machine 20 reaches the movement end position, then the movement reaches the movement end position. In the meantime, the ready-mixed concrete at the concrete discharge port 20A below the insertion cover 29 is dropped and supplied into the formwork 10, so that almost no residual concrete is generated.

The present invention is not construed as being limited to the illustrated embodiment. For example, the shape of the lower edge of the concrete leveling member 28 is determined according to the shape of the top end surface of the concrete wall to be formed. The capacity of the hopper 21 is appropriately determined according to the length of the concrete wall to be constructed.

[0022]

According to the concrete pouring device for the top of a wall according to the present invention, while the traveling support member moves on the top edge of the form for forming a wall, the concrete is continuously introduced into the form. The concrete is poured and concrete does not spill outside the formwork. In addition, since the leveling work of the concrete upper surface by the leveling member provided at the lower end of the hopper is performed in parallel with the concrete placing, the concrete placing and leveling finishing can be performed easily and quickly. .
In addition, since there is no need to prepare another container for treating excess concrete, the operation is not complicated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of a concrete placing machine for a wall top according to the present invention in a used state.

FIG. 2 is a cross-sectional view of the concrete placing machine of the embodiment cut along a vertical plane perpendicular to the moving direction.

FIG. 3 is a cross-sectional view of the concrete placing machine of the embodiment cut along a vertical plane parallel to the moving direction.

[Explanation of symbols]

 Reference Signs List 10 formwork 10S concrete placing space 13a, 14a top edge 20 concrete placing device 20A concrete discharge port 21 hopper 22 caster (running support member) 27 guide member 28 concrete leveling member C ready-mixed concrete

Claims (2)

[Claims] 1. A hopper capable of accommodating a required amount of concrete and having an openable / closable concrete discharge port at a lower end, and movably supported along the top edge of a wall construction form. A traveling support member; and a concrete leveling member provided at a lower end of the hopper and leveling a top surface of concrete in the wall construction form to a predetermined height as the hopper moves. A concrete placing machine for a wall top. 2. The guide member according to claim 1, wherein the guide member is inserted into a concrete casting space formed by a wall-building form at a lower end of the hopper and regulates travel of the traveling support member in a width direction of the casting space. A concrete placement machine for a wall top, characterized in that a wall is formed.