JPH0328556B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a concrete pouring device for pouring concrete into a position with a high head.

As the scale of an underground structure increases, its construction depth also increases, and when it comes to concrete work for this purpose, there are many cases where the amount of concrete placed underground exceeds that above ground.

Therefore, when pouring concrete into a position with such a high head, when concrete is poured using a conventional vertical chute, separation of the concrete aggregate may occur, or the high head may cause a large impact on the pouring area. Increased risk of work.

The applicant has already filed an application for a chute for concrete pouring that eliminates these drawbacks, feeds concrete stepwise in a vertical chute, prevents separation of concrete aggregate, and reduces the impact of drops. . This chute is as shown in FIGS. 1 and 2. That is, as shown in Figure 1,
1 is a flexible material or a chute made of a flexible material at predetermined intervals, and 2 is a valve device that is wound around the outer periphery of the chute at predetermined intervals of the chute 1 to control air pressure P within the surrounding frame 3. tube 4 supplied with
is installed in a manner surrounding the chute 1.

Therefore, the valve function of the valve device 2 is closed when the tube 4 is inflated by the air pressure P and crushes the chute 1 and blocks the concrete passage. The weight of concrete when a certain amount of concrete 5 accumulates inside the chute 1 partitioned by the valve device 2 which is closed at 2 is the air pressure P.
It overcomes the closing force of the valve device 2 caused by the valve device 2 and automatically acts like a valve opening, causing a part of the accumulated concrete to fall toward the next valve device 2, and this is repeated one after another to supply concrete 5. go. 1st
Figures a, b, c and d show this state, in which the valve device 2 is supplied with air pressure P and closes the chute 1 at predetermined intervals. When the concrete 5 is now supplied from above, the concrete 5 accumulates in the upper part of the inside of the chute 1 which is closed by the first valve device 2, as shown in FIG. 1a. Then, when a certain amount of accumulated concrete 5 is reached, the valve device 2 is pushed open in the opening direction by the weight of the accumulated concrete 5, and a part of the accumulated concrete 5 passes through the first valve device, and then the valve device 2 is opened. It accumulates in the upper part of the inside of the chute 1 which is closed by the second valve device 2, as shown in FIG. 1b. As the concrete 5 is sequentially supplied, the amount of concrete 5 accumulated in the upper part of the inside of the chute 1 closed by the second valve device 2 increases as shown in FIG. 1c.

Then, when the concrete 5 accumulated in the upper part of the inside of the chute 1 closed by the second valve device 2 reaches a certain amount, the second valve device 2 is pushed open in the opening direction and the concrete 5 accumulates. A portion of the pooled concrete 5 falls into the upper part of the inside of the chute 1 which is closed by the third valve device 2, as shown in FIG. 1d.

Since the above action is repeated and the concrete 1 is supplied, the head that must be considered for the concrete 5 is the predetermined interval at which the valve device 2 is arranged, and there is no separation of concrete aggregate. This also solves the problem of impact caused by high drops.

Note that the chute 1 must be flexible at least at the portion through which the valve device 2 is inserted, that is, at predetermined intervals.

Further, in an example of the valve device 2, as shown in the cross section in FIG. 2, the enclosing frame 3 is divided into two parts with a hinge 6 to facilitate installation and removal.
shows bolts and nuts for closing the enclosing frame 3. Reference numeral 4 denotes a tube built into the surrounding frame 3 so as to surround the inserted chute portion 1, and the air hole of the tube 4 is fitted with a fitting 8 which is attached to a hole provided in the surrounding frame 3. It is connected to an air hose 9 through the air hose 8 and is configured to receive air pressure through the air hose 9. Note that 10 is a protective cover for the air hose 9.

An object of the present invention is to provide a concrete placing device that uses the above-mentioned valved chute to expand its placing range, and its gist is to provide a swing arm of a swing type crane. A chute is provided in the lower part so as to be freely movable and is made of a flexible material through a first hopper on one end side, or is made of a flexible material at predetermined intervals, and is provided in a winding manner around the outer periphery of the chute at predetermined intervals. A traveling conveyor connected to a chute with a valve, which is made up of a valve device that acts as a valve to close the chute when supplied with air pressure, and a fixed conveyor arranged above the swing arm from the base end to approximately the center of the swing arm. and a second hopper which is fixed to the revolving arm and receives concrete brought in from the outside onto the fixed conveyor. The traveling conveyor is moved to a position corresponding to the concrete placement position, and the concrete supplied from outside is transferred to the fixed conveyor.
When the concrete is conveyed to the hopper via a traveling conveyor and poured vertically through the valved chute, the weight of the valved chute increases as the head becomes higher, and the lower end of the chute is pulled sideways to form a predetermined position. The range of concrete pouring, which was difficult when using the conventional method, is expanded, and if the height position of the trolley can be changed freely, concrete can be placed at various locations easily. The point is that it can be made to correspond to

This will be explained in detail below based on the drawings.

That is, FIGS. 3a and 3b are a plan view and a front view of an embodiment of the apparatus of the present invention, and FIG. 3c is an explanatory diagram showing the relationship of conveyor positions.

In the figure, 30 and 31 are a swing device and a swing arm of a swing type crane. A running conveyor 36 is provided below the swinging arm 31 so as to be movable along the swinging arm 31. A first hopper 17 is connected to one end of the running conveyor 36, and a chute 11 with a valve is connected to the tip of the hopper 17. is fixed. Therefore, the concrete on the traveling conveyor 36 is supplied to the valved chute 11 through the hopper 17 by the belt running of the traveling conveyor 36. On the other hand, a rotating arm 31 is provided above the rotating arm 31.
A fixed conveyor 33 is provided extending from the proximal end to approximately the center. A second hopper 32 for receiving concrete is fixed to the turning device 30, and further,
A fixed conveyor 35 is provided for conveying concrete discharged from the hopper 32 onto a fixed conveyor 33.

Therefore, the rotating arm 31 is rotated, and the traveling conveyor 3
6 is moved so that the tip of the valved chute 11 corresponds to the concrete placement position.

Therefore, concrete transported by, for example, a mixer truck is put into the hopper 32, and the concrete discharged from the hopper 32 is transported onto a running conveyor 36 by fixed conveyors 35 and 33. Concrete on the traveling conveyor 36 is supplied to the valved chute 11 through the hopper 17 by the belt traveling of the traveling conveyor 36, and is poured. The driving range extends within the turning radius of the turning arm 31.

Furthermore, as shown in the enlarged detailed view of the swing arm 31 in FIG. When moving the position, if there is an obstacle in the path of movement, the valved chute 11 may be lifted up by the winch of the chute setting crane 24 to avoid the obstacle.

Incidentally, the chute setting crane 24 can be used as an overhead crane except when installing a chute.

In addition, a vibrator hanging arm 25 is fixed to the tip side of the chute with a valve as shown in FIG. 5, and a vibrator 27 is attached to the vibrator hanging arm 25 via a vibrator hanging device 26. 27 can also be used to reduce concrete compaction work.

Furthermore, the swing crane may be mounted on a trailer or the like, or a temporary rail may be installed, and the crane may be a mobile type that can be moved on the rail.

Although the method of moving the traveling conveyor 36 in the concrete placing apparatus of the present invention has not been described above, this method is similar to the method conventionally used, for example, by moving each tip of a wire wound around a drum to the traveling conveyor. A method may be used in which the drums are separately fixed to one end and the other end of a frame body, etc., and moved by rotating a drum.

As explained above, according to the present invention, the range of concrete placement is expanded by using the valved chute 11, and since there is nothing to install on the reinforcing bars, there is no need to disturb or pollute the reinforcing bars. It disappears.

Furthermore, the work of the workers becomes easier, which leads to a reduction in labor, and also has the effect of lowering the casting cost.

Furthermore, although the above description has been made as if it were applied to a basement floor, it can be applied as is to a ground floor or to a layered construction method.

Furthermore, since the chute with the valve, which automatically opens due to the weight of the accumulated concrete, was moved in the horizontal direction, it has the advantage that no valve control function is required even though it is a mobile object, and Despite such movement, concrete can be reliably conveyed to the upper end supply port without requiring any measures, which is extremely convenient in practice.

[Brief explanation of drawings]

FIGS. 1 a, b, c, and d are diagrams for explaining the configuration of a chute with a valve and its function; FIGS. 2 a and b are cross-sectional views and vertical sectional views of an example of a valve device of a chute with a valve; Figure 3a,
b and c are a plan view and a front view of an embodiment of the device of the present invention;
Fig. 4 is an enlarged detailed view of the main parts, and Fig. 5 is a partial view of the main parts. 1...Chute, 2...Valve device, 11...
Chute with valve, 17...hopper, 30...swivel arm, 31...swivel arm, 32...hopper, 33...
...Fixed conveyor, 35...Fixed conveyor, 36...
...Traveling conveyor.

Claims (1)

[Claims] 1. A chute that is movably provided below the swing arm of a swing type crane and is made of a flexible material through a first hopper on one end side, or is made of a flexible material at predetermined intervals, and is attached to the outer periphery of the chute at predetermined intervals of the chute. A traveling conveyor connected to a chute with a valve, which is formed of a valve device that is arranged in a winding manner and acts as a valve to close the chute when supplied with air pressure; A concrete pouring device comprising: a fixed conveyor arranged across the ground; and a second hopper fixed to a swing arm for receiving concrete brought in from the outside into the fixed conveyor.