JPH0327701B2 - - 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.
indicates bolts and nuts for closing the surrounding 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 pouring device that uses the above-described valved chute and has an expanded concrete pouring range. A flexible member or a chute made of flexible material is provided at a predetermined interval through a first hopper on one end side of the chute, which is movably provided below one half of the truss, and attached to the outer circumference of the chute at a predetermined interval. A traveling conveyor connected to a chute with a valve, which is comprised 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, and the upper half of the other half of the garter truss of the gate-type traveling garter. There is a fixed conveyor arranged from the base end of the truss to almost the center, a gutter that transfers conveyed concrete from the tip of the fixed conveyor to a traveling conveyor located to the side, and a gutter fixed to the garter truss of the gate-shaped traveling garter and conveyed from the outside. By providing a concrete placing device characterized by comprising a second hopper that receives concrete carried in and supplies it to a fixed conveyor, and a crane that can freely travel on a garter truss on the side where the traveling conveyor is arranged, A chute with a valve fixed to the tip of a hopper fixed to a movable traveling conveyor is moved to a position corresponding to the concrete placement position by the movement of the traveling conveyor, and concrete supplied from the outside is placed on the traveling conveyor. When the concrete is poured vertically through the above-mentioned valved chute, the weight of the valved chute increases as the head becomes higher, and the lower end of the chute is pulled sideways and poured into the specified position. The range of concrete placement, which was difficult to achieve using conventional methods such as
Furthermore, if the height position of the hopper can be freely changed, 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 plan view, a front view, and a partial view showing the structure of an embodiment of the concrete pouring apparatus of the present invention.

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, and a trolley 18 to which a first hopper 17 is fixed is movably provided on the rail 16. A valved chute 11 consisting of a chute 1 and a valve device 2 is fixed to the tip of the hopper 17, and is adapted to supply concrete supplied to the hopper 17 to a pouring position.

On the other hand, a second hopper 19 is fixed to the traveling garter 13 for receiving concrete brought in from outside, and a position corresponding to the discharge port of the hopper 19 is located above the other half of the truss of the traveling garter 13. A fixed conveyor 20 is fixedly fixed, with one end facing the running garter 13 and the other end extending along the running garter 13 to approximately the center of the running garter 13.

A traveling conveyor 21 is movably mounted within the truss of the traveling garter 13, and one end of the traveling conveyor is detachably connected to the trolley 18 by, for example, a connecting pin 22, as shown in FIG. 3c.
Further, the trolley 18 can be connected to the other end of the traveling conveyor 21 by the connecting pin 22. Therefore, as the traveling conveyor moves, the trolley 18 moves simultaneously as a unit.

The other end of the fixed conveyor 20 and the traveling conveyor 21
For example, a gutter 23 communicates with the upper surface, and the concrete conveyed by the fixed conveyor 20 is configured to be discharged to the upper surface of the traveling conveyor 21 through the gutter 23.

A chute installation crane 24 is movably installed at the upper part of the traveling garter 13 on the side where the traveling conveyor 21 is disposed. Therefore, the chute installation crane 24
The fixed conveyor 20 is located at a position away from the traveling path of the chute installation crane 24 so as not to obstruct the traveling of the chute, and the upper surface of the other end of the fixed conveyor 20 is fixed at a higher position than the upper surface of the traveling conveyor 21. The location of the conveyor has been selected. If the crane 24 is to be used on the opposite side of the gutter 23, it must be rearranged.

First, the traveling conveyor 21 and the traveling garter 1
3 is moved so that the tip of the valved chute 11 corresponds to the concrete placement position. In this case, if the concrete placement position is on the left side from the center of the traveling garter 13 as shown in FIG. 3b, the relationship between the traveling conveyor and the trolley 18 may be as shown by the solid line in FIG. 3b, but the concrete position is A trolley 18 is connected to the other end of the traveling conveyor 21 when it is on the right side from the center of the traveling garter.

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 hoisted up by the winch of the chute installation crane 24 to avoid the obstacle.

Therefore, concrete carried in from the outside by a mixer truck or the like is put into the hopper 19, and the concrete discharged from the hopper 19 is conveyed onto the traveling conveyor 21 via the fixed conveyor 20 and the gutter 23. The concrete on the traveling conveyor 21 is transferred to the hopper 17 by the traveling conveyor 21.
It passes through the valved chute 11 and is cast into a predetermined position.

In this case, as described above, when the trolley 18 is connected to one end of the traveling conveyor as shown by the solid line in FIG. 3b, and when the trolley 18 is connected to the other end of the traveling conveyor, the belt of the traveling conveyor is Of course, the direction of travel can be reversed.

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. 3d, 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 operating the vibrator 27.

Although the method of moving the traveling conveyor 21 in the concrete placing apparatus of the present invention has not been described above, this method is similar to the conventional method, 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 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 the drawing]

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 plan views of embodiments of the device of the present invention;
They are a front view and a partial view. 1...Chute, 2...Valve device, 11...
Chute with valve, 13... Traveling garter, 1
7,19...Hopper, 20...Fixed conveyor, 2
1... Traveling conveyor.

Claims (1)

[Claims] 1. A chute made of flexible material or a chute made of flexible material provided at predetermined intervals through a first hopper on one end side, which is freely movable below one half of the garter truss of a gate-type traveling garter. A traveling conveyor that connects a chute with a valve, which is comprised of a valve device that is wound around the outer periphery of the chute at predetermined intervals and acts as a valve to close the chute when supplied with air pressure, and a garter truss of a gate-type traveling garter. A fixed conveyor is placed above the other half of the truss, extending from the base end of the truss to approximately the center of the truss. A concrete pouring device characterized by comprising: a second hopper fixed to a garter truss that receives concrete brought in from outside and supplies it to a fixed conveyor; and a crane capable of moving freely over the garter truss on the side where the traveling conveyor is arranged. Installation equipment.