JPH068541B2 - Sediment unloading device for pneumatic caisson method - Google Patents

Description

Detailed Description of the Invention

<Industrial application field> The present invention relates to a device for carrying out excavated soil in a pneumatic caisson method. <Conventional technology and technical problems> Conventionally, as shown in Fig. 5, the excavation soil is carried out by the pneumatic caisson method, and the earth excavated by an excavator (not shown) is loaded into the sediment carrying bucket 1 to carry out the sediment. The unloading bucket 1 is vertically suspended by a crane or the like in a hollow cylindrical standing pipe 4 that communicates the work chamber 2 and the outside with a lock device 3 provided at the upper portion, thereby excavating earth and sand. It was carried into the atmosphere. At this time, if the sediment is carried out by one bucket, it takes time to load the sand by the excavator, and the efficiency of carrying out the sediment is poor. Therefore, two buckets 1 and 1'for carrying out sediment are used, The carry-out bucket 1 is hung up through the inside of the standing pipe 4, the earth and sand are carried out into the atmosphere, and the emptied carry-out bucket 1 again passes through the lock device 3 and the inside of the standing pipe 4, and the working chamber 2
While returning to the inside, the other sediment carrying bucket 1 ',
The loading efficiency of the excavated earth and sand is increased by loading the earth and sand by the excavator in the work room 2, alternately loading and unloading the excavated earth and sand using the two buckets 1 and 1 '. However, when using two buckets 1 and 1 ', the worker 5 must be arranged in the working room 2 and the wire rope 6 for suspending the bucket for carrying out sand and sand must be replaced manually, so that the Since the atmospheric pressure in the work chamber 2 increases as the depth of the main body 7 is lowered, the work time of the worker 5 in the work chamber 2 must be shortened, and there is a drawback that the work efficiency decreases. . It is an object of the present invention to solve the above-mentioned drawbacks and to provide a device for carrying out excavated earth and sand which has a high efficiency of carrying out excavated earth and sand and does not have to arrange a worker in the work chamber. <Means for Solving the Problems> In order to solve the technical problems that the above-mentioned conventional technology has,
The sediment carrying-out device in the pneumatic caisson method according to the present invention is a bucket 27 for loading and unloading earth and sand which is excavated and loaded by an excavator by opening the hinged bottom lids 28 and 28 '. Is lifted to a predetermined position in the vertical pipe 18 by a lifting device 21 that is connected to the working chamber 9 and is attached to the upper part of the hollow cylindrical vertical pipe 18 whose upper end is closed by the end plate 16. The earth and sand transfer bucket 27 is supported by the member 40 and made to stand by, and the earth and sand transfer bucket 14 that is lifted by a crane or the like is suspended on a rail 41 fixed to the lower surface of the ceiling slab 10 of the work chamber 9, and the traveling device 43 is mounted on a traveling carriage 44 which can be horizontally moved by 43, and water is watered up to just below a bucket 27 for earth and sand transshipment suspended up to a predetermined position in the vertical pipe 18. After moving and stopping, the hanging chain 26 of the lifting device 21 is paid out to open the hinged bottom lids 28, 28 ′ of the buckets 27 for sediment transfer, so that the sediment is transferred from the bucket 27 for sediment transfer. It is loaded into the carry-out bucket 14, the traveling carriage 44 is moved horizontally, and the carry-out bucket 14 is moved.
Is carried out into the atmosphere through the standpipe 13 and the lock device 12. <Embodiment> An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In FIGS. 1 and 2, an opening 11 is provided in a ceiling slab 10 of a working chamber 9 of the submarine body 8, and a hollow cylindrical shape that communicates the working chamber 9 and the outside with a locking device 12 provided at the top. The stand tube 13 is placed in an airtight state so as to cover the opening 11. 14 is a standing pipe 1 from the work room 9.
3. Through the lock device 12, a crane (not shown)
It is a bucket for carrying out excavated sediment that is lifted up by the like and carried out into the atmosphere. The ceiling slab 10 is provided with an opening 15 at a predetermined distance from the standing pipe 13, above the opening 15 an upper end is closed by an end plate 16 and a flange 17 is fixed to the lower end. Another hollow cylindrical standing pipe 18 is placed in an airtight state by an anchor bolt 19 so as to cover the opening 15. A support beam 20 is attached to the upper portion of the standing pipe 18,
A lifting device 21 such as a chain block is attached to the support beam 20. In this lifting device 21, the operation power cable 22 is connected to the vertical pipe 18
The image transmitted from the television camera 25 installed in the stand tube 18 is transmitted to the monitor TV 24 installed in the operation control room 23 by extending the airtightly through the side wall of the operation control room 23 on the ground. While watching, the suspension chain 26 of the lifting device 21 can be wound up and operated by remote control while operating. Reference numeral 27 is a bucket for loading and unloading earth and sand excavated by an excavator (not shown) that is operated by remote control from the ground. As shown in FIG. 2, its bottom lid is divided into half moons. , The half-moon shaped bottom lids 28, 28 ′ are hinges 3 fixed to the lower portions of the side plates 29 of the sediment transfer bucket 27, respectively.
It is mounted so that it can be opened and closed by 0 and 30 '. 31 is a hanging hand to which a boss 32 having an inverted frustoconical opening is fixed, and this hanging hand 31 is the bucket 2 for earth and sand transshipment.
Brackets 33, 3 fixed to the upper part of the side plate 29 of 7.
3'is swingably attached via pins 34, 34 '. Further, at the lower end of the suspending chain 26 of the baggage 27 for excavating earth and sand delivered from the lifting device 21, the lifting handle 31 is provided.
A frusto-conical hanging metal object 35 penetrating from below and connected to the hanging hand 31 is attached to the opening portion of the boss 32 fixed to. 36 and 36 'are bottom lids 28 and 2 of the bucket 27 for sediment transfer.
8'opening and closing rope, one end of which is connected to brackets 37 and 37 'fixed to the bottom lids 28 and 28',
The other end is connected to a hanging hardware 35 attached to the hanging lower end of the hanging chain 26. The opening and closing ropes 36, 36 'operate the lifting device 21 to wind up the hanging chain 26, and when the hanging hardware 35 penetrates the boss 32 of the hanging hand 31 into the opening and is connected to the hanging hand 31, The bottom lids 28, 28 'of the sediment transfer bucket 27 are stopped at the horizontal position, that is, the bottom lids 28, 28' of the soil transfer bucket 27 are adjusted to the closed length. 38 is a bucket 27 for earth and sand transshipment and a support cylinder, and a bucket support member 40 is attached to the tip of a rod 39 thereof. Further, on the lower surface of the ceiling slab 10, as shown in FIG.
It is fixed by 2. A traveling carriage 44 equipped with a traveling device 43 is suspended on the rail 41 via traveling wheels 45. An opening 46 is provided in the center of the traveling carriage 44 so that the bucket 14 for carrying out sand and sand can be mounted, and a bucket support member 47 is fixed to the upper surface of the opening 46. In addition, in this traveling carriage 44, a power supply operation cable (not shown) is used from the traveling device 43, but like the lifting device 21,
It extends to the operation control room 23 on the ground, and can be operated and stopped by remote control from the operation control room 23. <Operation> A method for carrying out excavated sediment by the sediment carrying-out device of the present invention configured as described above will be described below.

[Loading of excavated soil]

First, the hoisting device 21 is operated in the unwinding direction of the suspension chain 26 by remote control from the operation control room 23 on the ground, and the earth and sand transshipment bucket 27 is positioned on the ground 48 in the work room 9. Next, the earth and sand excavated by an excavator (not shown) operated by remote control from the ground in the work room 9 is loaded into the sediment transfer bucket 27. Next, the lifting device 2 is remotely operated from the operation control room 23.
1 is operated in the hoisting direction of the hoisting chain 26, and when the earth and sand transshipment bucket 27 is hoisted to a predetermined position in the vertical pipe 18, the operation of the lifting device 21 is stopped, and
The rod 39 of the cylinder 38 is extended, and the sediment transfer bucket 27 is supported by the support member 40 attached to the tip of the rod 39.
Wait inside.

[Transloading of excavated soil]

Next, the empty earth and sand carrying bucket 14 suspended in the working room 9 by a crane or the like is mounted on the traveling carriage 44, and the bucket for earth and sand transshipment that stands by at a predetermined position in the vertical pipe 18 is placed. Horizontally move to just below 27. Next, the hoisting device 21 is operated in the unwinding direction of the hanging chain 26, and the hanging chain 26 is unwound, whereby the hinged bottom lid 28 of the earth and sand transshipment bucket 27 supported by the support member 40, 28 ′ rotates downward from the horizontal position shown in FIG. 2, and the stored earth and sand is unloaded from the earth and sand transfer bucket 27 and transferred to the earth and sand carrying bucket 14.

[Soil and sand removal work]

Next, the traveling device 43 is driven to horizontally move the sediment carrying bucket 14 mounted on the traveling carriage 44 and containing the excavated soil to a position right below the opening 11 provided in the ceiling slab 10, The bucket 14 for carrying out sand and sand is lifted up in the standing pipe 13 by the above-mentioned method, and is carried out to the atmosphere through the lock device 12. By repeating the above-mentioned work, the excavated earth and sand can be carried out without arranging a worker in the work chamber 9. <Effects of the Invention> The earth and sand carrying-out device of the present invention having the above-described configuration and operation is
It has the following effects. (1) Once the earth and sand excavated by the excavator is loaded in the bucket for loading and unloading sand, the bucket for loading and unloading sand returns to the work room, and immediately the bucket for loading and unloading is horizontally moved by the traveling carriage. By loading the sediment from the sediment transshipment bucket to the sediment transport bucket and then transporting the sediment, it takes time to load the excavated soil into the sediment transport bucket. As a result, the loading time can be shortened, and the excavation soil excavation efficiency can be increased. (2) In the past, in the case where the work depth had to be shortened when the depth of the submarine was deepened, in contrast to the earth and sand carrying-out device of the present invention, a monitor TV set on the ground and a TV set in the vertical pipe. It is not necessary to arrange a worker in the work chamber by operating the lifting device and the traveling carriage by remote control from the ground while watching the image transmitted by the camera. Therefore, the work time is not restricted even when the depth of the submarine is deepened, and the highly efficient sediment discharge work can be performed. Further, the worker is released from the work under pressure, and a comfortable working environment is provided.

[Brief description of drawings]

FIG. 1 is an overall layout view of the earth and sand carrying-out device of the present invention, FIG. 2 is a detailed explanatory view of a bucket for transferring sediment, FIG. 3 is a partial sectional view of a traveling carriage, and FIG. 4 is a plan view of the traveling carriage. FIG. 5 is an explanatory view of a conventional method for carrying out excavated earth and sand. (Main symbols) 8: main body of submarine, 9: working room, 14: bucket for loading and unloading sand, 21: lifting device, 23: operation control room, 25:
・ TV camera, 27 ・ ・ Bucket for transshipment of earth and sand, 41 ・ ・
Rails, 44 ...

Claims (1)

[Claims] 1. A carrying-out device for excavated earth and sand when an underground structure is sunk by the pneumatic caisson method, which accommodates the earth and sand excavated and loaded by the excavator and opens hinged bottom lids 28, 28 '. As a result, a bucket 27 for loading and unloading the loaded sediment, which can be moved up and down, and a bucket 14 for delivering the excavated soil to the atmosphere via the lock device 12 on the upper part of the standing pipe 13, Rail 4 fixed to the lower surface of ceiling slab 10 of working room 9
1 is provided with a traveling device 43, and is constituted by a traveling carriage 44 capable of horizontally moving the sediment carrying bucket 14 to a position directly below the sediment transferring bucket 27, each of which is remote. Sediment unloading device in the pneumatic caisson method characterized by being operated.