JPH05340100A - Concrete placing device - Google Patents

Abstract

PURPOSE:To place concrete without depending on human power by connecting a placing pipe to a concrete force-feeding means, moving a base in two directions, and rotating the placing pipe rotatably supported on the base. CONSTITUTION:A concrete placing device has a base 23 which is supported by guide parts 20, 20 extending in two directions X, Y orthogonal to each other in plane view, and movable in the two directions X, Y; and a placing pipe 26 rotatably supported on the base 24. The placing pipe 26 is connected to a flexible hose 56 through a swivel joint consisting of a middle pipe 54 and a casing 46, and the hose 56 is connected to a concrete force-feeding means 52. Concrete is supplied from the concrete force-feeding means 52 to the placing pipe, and while moving the base 24 in the two directions X, Y, and rotating the placing pipe 26, the concrete is placed in a desired position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete placing apparatus, and more particularly to a crane such as a building having columns extending upward from a floor on which concrete is to be placed and beams arranged above the floor. A pouring device suitable for pouring concrete for the floor of a building where no type of pouring device can be used.

[0002]

2. Description of the Related Art In placing concrete for a floor 10 of a building, as shown in FIG. 8, a pipe 12 connected to a concrete pumping means (not shown) is arranged substantially at the center of the floor 10 and A flexible or flexible hose 14 is attached to the tip of the worker 12, and while the concrete is pumped by the concrete pumping means, the worker 16
Lifts the hose 14 and swings the tip of the hose while distributing the concrete so that the concrete becomes uniform.

[0003]

When pumping concrete by pumping, the slab thickness is usually about 150 mm, even though the pouring amount reaches 20 to 30 m ³ / h, which is a large amount.
Therefore, the worker must swing the hose in a short time, resulting in heavy labor for the worker.

In addition, if the floor 10 is substantially divided into several areas by the pillars 18 and is quite wide, first the area is laid with concrete and then the area.
Although the placement work is performed for each area, a lot of manpower is required for the work of removing, moving, and reconnecting the pipe portion 13 of the pipe 12 and the hose 14 in the process of moving from area to area. In addition, the pumping of concrete is interrupted each time the material is refilled, which hinders the improvement of work efficiency.

An object of the present invention is to provide a concrete placing device which can place concrete without manual labor.

[0006]

A concrete placing device according to the present invention is supported by a guide portion extending in two directions orthogonal to each other in plan view, and is moved in the two directions. And a casting pipe rotatably supported by and connected to the concrete pumping means via a swivel joint.

While the concrete is being supplied from the concrete pumping means to the placing pipe, the platform is moved in two directions orthogonal to each other in plan view, and the placing pipe is rotated to place the concrete.

When moving in two directions orthogonal to each other in plan view,
Further, since the concrete is placed by the turning placement tube, it is not necessary to manually swing the hose, and labor can be saved.

Since the hose or the like connecting the concrete pumping means and the casting pipe can be moved together with the base, the number of refilling operations can be reduced. As a result, the number of times the pumping of concrete is interrupted is reduced, and the work efficiency can be improved.

It is preferable to provide a flexible hose for connecting the casting pipe to the concrete pumping means. In this case, a warp having a low friction coefficient is attached to a predetermined portion of the outer peripheral surface of the hose.

Since the hose is easily bent and the warp having a low coefficient of friction is attached to the outer peripheral surface of the hose, the hose easily moves following the base. Thereby, the work efficiency can be further improved.

At least one of the bidirectional guides
The directional guide is preferably formed by a tensioned wire rope.

The wire rope can be easily tensioned by a lever block, a chain block, or the like, and the tension can be released so that the whole can be made small. It is easy to introduce and carry out after placing. This allows
The operating rate of the concrete placing device can be increased.

[0014]

EXAMPLE As shown in FIGS. 1 to 3, a concrete pouring device is supported by a guide portion 20 and a guide portion 22 extending in two directions X and Y which are orthogonal to each other in plan view, and is moved in the two directions. Included is a stand 24 and a casting pipe 26.

In the illustrated embodiment, the guide portion 20 is composed of a pair of wire ropes 21 arranged in parallel at a distance. Each wire rope 21 is endlessly hung on a transporter 32 having a tensioning means 30 attached to a pillar 28 of a building at a predetermined distance and a pulley 34. The tensioning means 30 is a lever block, and the wire rope 21 is tensioned by reciprocating the lever. The carrier 32 is a winch that reciprocally pulls the endless wire rope 21.

The guide portion 22 comprises a wire rope 23 in the illustrated embodiment. One end of the wire rope 23 is hung on the carrier 32 and fixed to one side of the base 38 of the base 24, and the other end of the wire rope 23 is connected to the base 3 of the base 24.
8 is guided through the space between the mounting portion 39 and the mounting portion 39 to the pulley 34, and the other end portion is connected to the base portion 38 of the base 24.
, And the wire rope 23 is endless. Tensioning means 30 for tensioning the wire rope 23
Is incorporated into the wire rope 23. Carrier 32 and pulley 3
4 means that the wire rope 2
It is attached to 1.

As a result of forming the guide portions 20 and 22 as described above, the base 24 has a pair of wire ropes 21 of the guide portion 20.
Are moved in the X direction in which the wire rope 21 extends and in the Y direction in which the guide portion 22 extends by the carrier 32 in engagement with the guide portion 22.

The base 24 includes a base portion 38, an annular mounting portion 39 located at a distance above the base portion 38, and a swivel portion 4.
Has 0 and.

The base 38 has a low coefficient of warpage 37 over its entire underside. The sled 37 slides on the reinforcing bar, and like the sled for the hose described later, it can be formed by a ball bearing provided with a large number of balls, and is an ultra high molecular weight polyethylene resin excellent in impact resistance and surface smoothness. And a rubber sheet.

The mounting portion 39 is attached to the base portion 38 by the support column 41.
And an annular gear 42 is fixed to the mounting portion 39. On the other hand, the revolving unit 40 includes the thrust bearing 4
A cylindrical casing 46 is rotatably supported on the gear 42 via the shaft 4, and is fixed to the revolving unit 40.

The casing 46 extends downward through the gear 42 and the mounting portion 39. A rolling bearing (not shown) is arranged between the casing 46 and the mounting portion 39 to position the casing 46, and the casing 46 is moved to the gear 4
2 and the mounting portion 39 are rotatable.

A forward / reverse rotatable electric motor 48 is attached to the swivel unit 40, and a gear 50 fixed to the shaft thereof is engaged with the gear 42. As a result, when the gear 50 is rotated by the electric motor 48, the gear 50 revolves around the gear 42, and the revolving portion 40 rotates together with the casing 46 along with this revolution.

The casting pipe 26 is rotatably supported by the base 24 and is connected to a concrete pumping means 52 (FIG. 5) such as a concrete pump via a swivel joint.

In the illustrated embodiment, the casting pipe 26 is hermetically secured to the casing 46 and pivots with the casing 46. The casting pipe 26 is formed of a material having high rigidity such as a steel pipe, and can receive the reaction force of the cast concrete by itself. The intermediate pipe 54 is the base 38
It is fixed on. This intermediate pipe 54 is used for the casing 4
6, which is hermetically connected to the casing 6 so as to be rotatable relative to the casing 4.
6 and 6 form a swivel joint. The intermediate pipe 54 is
It is made of a highly rigid material such as steel pipe and maintains the swivel joint without being deformed by the force applied from concrete.

A flexible and flexible hose 56 connects the intermediate pipe 5 to connect the casting pipe 26 to the concrete pumping means.
4 is connected. It is preferable that the hose 56 be sufficiently long, so that refilling can be reduced. Sledges 58 having a low coefficient of friction are attached at predetermined intervals on the outer peripheral surface of the hose 56 at predetermined intervals. The sled 58, as shown in FIG.
It slides on the rebar 60 placed at the place that should be the floor,
It can be formed by a ball bearing provided with a large number of balls 59, and further can be formed by a composite material of an ultrahigh molecular weight polyethylene resin and a rubber sheet, which has excellent impact resistance and surface slipperiness.

In the embodiment shown in FIGS. 1 and 2, two vibrators 62 are attached to the arm 63. The arm 63 is moved by a ball screw 66 rotatably disposed in a trough 64 fixed to the driving pipe 26.
It can be moved in the direction of the turning radius of 6 and can be turned together with the driving pipe 26. The ball screw 66 is rotated by an electric motor 68 that can rotate in the forward and reverse directions.

In the embodiment shown in FIGS. 6 and 7, the leveling machine 74 is supported by guide portions 70 and 72 extending respectively in two directions X and Y which are orthogonal to each other in plan view and is moved in the two directions. Is provided. The leveling machine 74 levels the poured concrete, and is supported by the guide portion 72 common to the platform 24 in one of the two directions Y.

The guide portion 70 has a frame structure, and the leveling machine 7
4 moves in the X direction along the guide portion 70. The movement can be by means of a winch or by means of a roller which is rotated by an electric motor and which is attached to the leveling machine 74. It is preferable that the jacks 71 are attached to the two ends of the guide portion 70, and the guide portion 70 is supported by the jack 71 when the guide portion 70 does not move.

The guide portion 72 is composed of a pair of wire ropes 73 which are arranged in parallel at a distance. Wire rope 7
3 is tensioned to the post 28 as in the previous embodiment. The guide part 70 is moved along the pair of wire ropes 73 of the guide part 72 in the Y direction.
A roller is used to move in the direction. That is,
One roller 76 and two rollers 77 are attached to each end of the guide portion 70, and the rollers 76 are arranged above the wire rope 73 so that they can be rotated by the electric motor 80. The wire rope 73 is arranged below the wire rope 73, and the wire rope 73 is sandwiched by the rollers 76 and 77. Then, the electric motors 80 at both ends are synchronously driven.

To move the table 24 in the X direction,
It can be configured in the same manner as the above-described embodiment in which the guide portion 22 is supported. However, instead of the fasteners, the bracket 82 is attached to the winch 32 and the pulley 34, respectively.
The brackets 82 support the rollers 76 and 77,
The roller 76 is rotated by the electric motor 80.

In order to pour concrete, as shown in FIG. 5, the wire ropes 21 of the guide portion 20 are attached to the pillars 28 at the four corners of the area where the concrete is to be poured and tensioned, and the guide portion 22 is pulled. Is attached to the wire rope 21 and tensioned. Further, the hose 56 is connected to the concrete pumping means 52 through the pipe 84, and the pipe 84 is fixed so as not to be moved by the concrete.

Concrete is supplied from the concrete pumping means 52, the placing pipe 26 is swung, and the platform 24 is moved by the winch 32 incorporated in the guide portion 22, and Y
Drive in the direction. After the driving of the first row in the Y direction is completed, the winches 32 incorporated in the pair of wire ropes 21 of the guide portion 20 are synchronously driven to move the guide portion 22 along the guide portion 20. After that, the second row is placed next to the first row in the same manner as described above.
By repeating this operation, concrete is poured evenly over the entire area.

After the casting of the area is completed, the guide portion 20 and the guide portion 22 are moved to the area and the casting of the area is performed in the same manner as described above. After the casting of the area is completed, the length of the pipe 84 is shortened to adjust the length, and the guide portions 20 and 22 are moved to the area and the casting is performed.

[Brief description of drawings]

FIG. 1 is a front view showing a stand and a placing pipe of an embodiment of a concrete placing apparatus according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view of an embodiment of the concrete pouring device according to the present invention.

FIG. 4 shows an embodiment of a sled provided on a hose, where a is a side view and b is a bottom view.

FIG. 5 is a plan view showing a usage example of the concrete placing device according to the present invention.

FIG. 6 is a plan view of another embodiment of the concrete pouring device according to the present invention.

FIG. 7 is a front view taken along line 7-7 of FIG.

FIG. 8 is a schematic diagram showing a conventional concrete pouring method,
a is a plan view and b is a side view.

[Explanation of symbols]

 20, 22, 70, 72 Guide part 21, 23, 73 Wire rope 24 units 26 Placing pipe 56 Hose 62 Vibrator

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Katsumi Kobayashi 2-1, Tsukudo-cho, Shinjuku-ku, Tokyo Kumagai Gumi Tokyo Head Office (72) Inventor Tsutomu Nakanishi 2-1-1, Tsukudo-cho, Shinjuku-ku, Tokyo Kumagai Gumi Tokyo Head Office

Claims (3)

[Claims] 1. A table, which is supported by guide portions extending in two directions orthogonal to each other in plan view, is moved in the two directions, and is rotatably supported by the table, and is connected to a concrete pumping means through a swivel joint. A concrete pouring device including a pouring pipe. 2. The concrete placing according to claim 1, further comprising a bendable hose connecting the placing pipe to the concrete pumping means, and a warp having a low friction coefficient is attached to a predetermined portion of an outer peripheral surface of the hose. apparatus. 3. The concrete placing device according to claim 1, wherein the guide portion in at least one of the two directions is formed by a tensioned wire rope.