JPH0327702B2 - - 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 placing concrete in a position with such a high head, when concrete is placed using a conventional vertical chute, the concrete aggregate may separate, and the high head may cause a large impact on the pouring area, making it difficult to place the concrete. Increased risk.

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 concrete 1 is supplied after the above action is repeated, the head that must be considered for concrete 5 is the predetermined interval at which valve device 2 is installed, 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.
indicates bolts and nuts for closing the surrounding frame 3. Reference numeral 4 denotes a tube installed in the surrounding frame 3 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 pouring device that uses the above-described valved chute and has an expanded concrete pouring range. A chute is provided below one half of the truss so as to be movable along the truss and is made of a flexible material at the tip or is made of a flexible material at predetermined intervals, and is wound around the outer periphery of the chute at predetermined intervals. A first hopper connected to a chute with a valve consisting of a valve device which is provided in the air pressure and acts as a valve to close the chute when supplied with air pressure, and the other half of the garter truss of the gate type running garter A fixed conveyor that conveys concrete is arranged over almost the entire length of the truss, and a scraper that is connected to a first hopper and is movable along the upper surface of the fixed conveyor and scrapes the concrete on the fixed conveyor to the first hopper. a second hopper that is fixed to the garter truss of a gate-type traveling garter and receives concrete brought in from the outside and supplies it to a fixed conveyor, and a crane that can move freely on the garter truss. By making it into a device, a chute with a valve fixed to a movable trolley or the like is moved to a position corresponding to the concrete placement position by the movement of the trolley, and concrete supplied from the outside is brought to the trolley position. When the concrete is conveyed and poured vertically through the valved chute, the weight of the valved chute increases as the head becomes higher.
The range of concrete pouring, which was difficult to achieve using the conventional method of pulling the lower end of the chute sideways and pouring into a predetermined position, has been expanded, and the height position of the trolley can be changed freely. The main advantage is that it can be easily adapted to various concrete placement locations.

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

That is, FIGS. 3a, b, c, and d are a front view showing the configuration of an embodiment of the concrete placing apparatus of the present invention, an explanatory view of section A-A, and a front view showing the configuration of a modified example of the present embodiment, It is a BB part explanatory diagram.

Reference numeral 13 denotes a gate-shaped traveling garter, which is installed on a rail 14 installed, for example, on a temporary pier for construction work, and is driven by a girder drive motor 15 to run on its own. A rail 16 is fixed to the lower half of one half of the truss of the traveling garter 13,
A trolley 18 to which a first hopper 17 is fixed is movably provided on a rail 16. A chute 11 with a valve consisting of a chute 1 and a valve device 2 is fixed to the tip of the hopper 17.
The concrete supplied in step 7 is supplied to the pouring position.

On the other hand, a second hopper 19 is fixed to the traveling garter 13 to receive concrete brought in from outside, and approximately above the other half of the truss of the traveling garter 13 of the gate type traveling garter. A fixed conveyor 20 is provided to convey the concrete discharged from the hopper 19 at one end along its entire length.

A chute installation crane 24 is movably installed above the traveling garter 13.

As described above, the fixed conveyor 20 is located at a position where it does not obstruct the travel path of the chute installation crane 24 due to the difference in upper and lower levels.

The trolley 18 is connected to a self-propelled traveling tripper 28, so that the traveling tripper 28 moves the valved chute 11, and the traveling tripper 28 moves the concrete on the fixed conveyor 20 through the hopper 17 to the valved chute 11. It is designed to lead to.

Therefore, by moving the traveling tripper 28, the tip of the valved chute 11 is made to face the concrete placing device.

In addition, when moving the position of the valved chute 11, if there is an obstacle in the movement path, the valved chute 11 may be lifted up with the winch of the chute installation crane 24 to avoid the obstacle.
Note that if the travel tripper 28 is present on the travel path of the crane 24, the movement of the crane 24 is restricted, so if you want to travel on the opposite side of the travel tripper 28, you must change the location.

Therefore, concrete carried in from outside by a mixer truck or the like is put into the hopper 19, and the concrete discharged from the hopper 19 is conveyed by a fixed conveyor 20, and the concrete is transported to the traveling tripper 2.
At position 8, it is supplied to the valved chute 11 through the hopper 18, and is cast through the valved chute 11.

FIGS. 3c and 3d show examples in which a traveling scraper 29 is used in place of the traveling scraper 28.
They are functionally the same.

Further, the chute installation 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. 4, and a vibrator 27 is attached to the vibrator hanging arm 25 via a vibrator hanging device 26. The concrete compaction work can also be reduced by using the vibrator 27.

Although the method of moving the traveling scraper 28 and the traveling scraper 29 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, using wires wound around a drum. A method may be used in which the tips of the drums are separately fixed to one end and the other end of a frame, 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 top of the reinforcement, there is no need to disturb or stain the reinforcement. 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 explanation was 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 a valve, which automatically opens due to the weight of accumulated concrete, is moved horizontally, it has the advantage of not requiring a valve control mechanism even though it is a mobile object. 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, c and d are front views of embodiments of the device of the present invention;
An explanatory diagram of the A-A section, a front view of a modified example, an explanatory diagram of the B-B section, and FIG. 4 are partial views. 1...Chute, 2...Valve device, 11...
Chute with valve, 13... Traveling garter, 1
7,19...Hopper, 20...Fixed conveyor, 2
8... Traveling tripper, 29... Traveling scraper.

Claims (1)

[Claims] 1. Shutes that are movable along one half of the garter truss of a gate-type running garter and are made of flexible material at the tip or at predetermined intervals, and are provided at predetermined intervals between the chute. and a valve device which is wound around the outer periphery of the chute and which acts as a valve to close the chute when supplied with air pressure.
a fixed conveyor for conveying concrete disposed above the other half of the garter truss of the gate type traveling garter over almost the entire length of the truss; A scraping device that is movable and scrapes concrete on a fixed conveyor into a first hopper, and a scraping device that is fixed to the garter truss of the gate-type traveling garter and receives concrete brought in from the outside.
A concrete placing device characterized by being equipped with a second hopper that supplies a supply to a fixed conveyor, and a crane that can freely travel on a garter truss.