JPH0610374B2 - Air lock shaft for pneumatic caisson - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air lock shaft for pneumatic caisson.

(Prior Art) Conventionally, the operation of the excavator in the pneumatic working chamber of the pneumatic caisson has been performed by an operator boarding and operating, but in recent years an example of excavation construction by remote control with caisson construction of a large depth. Has come to be seen many.

That is, for example, a traveling rail is provided on the ceiling of a work room, an excavator is attached to the traveling rail, and the excavator is operated by performing remote control from the ground to perform unmanned excavation in a pneumatic working room.

(Problems to be Solved by the Invention) However, according to the above-described conventional example, the worker had to enter the work chamber to recover the excavator after the excavation work was completed, and disassemble and pull up the machine. In this case, since the work is performed under a high pressure, there is a problem that the work efficiency is lowered and the worker is physically and mentally distressed.

The present invention has been made to solve such a problem, and an object thereof is to promptly recover an excavator under atmospheric pressure without inspecting a pressure working chamber, and perform inspection, repair, etc. It is to provide an air lock shaft for pneumatic caisson that can carry out the above and can carry out earth and sand from the same shaft hole.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a lower hatch container provided with a hatch through which a caisson excavator for excavating a pneumatic caisson can pass, and an upper part of the lower hatch container. And a material lock for storing a caisson excavator, and a material shaft and a material lock for discharging earth and sand at the upper part of the storage container.

(Operation) According to the present invention, according to the above configuration, the caisson excavator, which has completed the excavation work in the pneumatic working chamber, is moved to just below the lower hatch container on the slab, and is pulled up to the storage container by the pulling device. By closing and decompressing the material shaft and material lock to atmospheric pressure, it is possible to work under atmospheric pressure.

Also, during the earth and sand carrying-out work, the lower hatch can be opened and the sand and sand carrying-out work can be carried out by the upper matel al lock.

As described above, it is possible to carry out the sediment and the caisson excavator to the atmospheric pressure from the same airlock shaft.

(Examples) Hereinafter, preferred examples of the present invention will be described with reference to the drawings.

FIG. 1 shows the entire structure of an air lock shaft for a pneumatic caisson according to the present invention.

Here, a characteristic of the present invention is that a lower hatch container provided with a hatch through which a caisson excavator for sinking and excavating a pneumatic caisson can pass, and a caisson excavator provided above the lower hatch container can accommodate the caisson excavator. Storage container,
A material shaft for carrying out earth and sand and a material lock are provided on the upper part of the storage container.

In the present embodiment, as shown in FIG. 1, a lower hatch container 1 having a hatch 2 is installed on a work chamber slab A, and a storage container 3 capable of accommodating an excavator C is flange-joined thereto. Has been done. The deformed shaft 4 is for connecting to the material shaft 5, and a material lock 6 for carrying out earth and sand is installed on the material shaft 5.

As shown in FIG. 2, it is also possible to raise a material shaft 5 ′ having the same diameter as the upper flange of the storage container 3.

Next, the operation of carrying out sediment and the recovery operation of the excavator according to this embodiment will be specifically described.

FIG. 1 shows a state in which the excavator C is pulled up to the storage container 3 for maintenance or attachment replacement. After the excavator C is stored, the hatch 2 is closed, and the material shaft and the material lock in the upper portion are decompressed. By setting the atmospheric pressure, the worker can work under the atmospheric pressure.

FIG. 3 shows a state where the earth and sand are carried out. The excavated earth and sand is carried out by the bucket through the material lock 6. At this time, the lower hatch 2 is opened, but the upper hatches 7 and 8 are alternately opened and closed to maintain the air pressure state in the containers 1 and 3.

FIG. 4 shows a state in which the excavator is recovered to atmospheric pressure. In this case, by closing the hatch 2 and removing the material lock 6, the material shaft 5 and the deformed shaft 4, the excavator C is removed from the storage container 3. Be lifted.

(Effects of the Invention) As described above, the present invention provides a lower hatch container provided with a hatch through which a caisson excavator that excavates a pneumatic caisson can pass, and a caisson excavator provided above the lower hatch container. Since the accommodating container that can be accommodated and the material shaft and material lock for carrying out the earth and sand are provided on the upper part of the accommodating container, a recovery hole for recovering the caisson excavator in the work chamber slab becomes unnecessary.

In addition, when performing normal maintenance and minor repairs, it is possible to work under atmospheric pressure in the storage container, and at the time of recovery, the excavator can be easily recovered by removing the material lock and the shaft on the upper part, etc. There are advantages.

[Brief description of drawings]

FIG. 1 is a diagram showing the entire structure of an airlock shaft for pneumatic caisson according to the present invention, FIG. 2 is a diagram showing a connection state between a storage container and a material shaft, and FIG. 3 is a diagram showing the excavated earth and sand carried out. FIG. 4 is a diagram showing a state in which the caisson excavator is recovered under atmospheric pressure. A: Slab B: Working room C: Caisson excavator D: Bucket 1 ... Lower hatch container 2 ... Hatch 3 ... Storage container 5 ... Material shaft 6 ... Material lock

Claims (1)

[Claims] 1. A lower hatch container having a hatch through which a caisson excavator for excavating a pneumatic caisson can pass, a storage container provided above the lower hatch container and capable of accommodating the caisson excavator, and the storage. An airlock shaft for pneumatic caisson, which is equipped with a material shaft for carrying out sediment and a material lock at the top of the container.