JP2003268779A - Pneumatic caisson and excavation in pneumatic caisson and control-recovering method for excavator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pneumatic caisson having a steel or concrete airtight chamber, and an excavation control-recovering method for an excavator in the pneumatic caisson for quickly recovering the excavator, performing inspection-maintenance in a foot side steady environment under atmospheric pressure on the outside of a work chamber, and allowing a worker to safely and quickly move in the airtight chamber to an aboveground part. <P>SOLUTION: A caisson airtight chamber 7 having a wide space is almost horizontally arranged above a slab B. The caisson airtight chamber 7 has machine-man airtight chambers 10 and 11, and houses the excavator 14 housed in the machine airtight chamber 10 in an almost horizontal attitude, and safely allow the inspection-maintenance in a wide foot side excellent space. The man airtight chamber 11 and the machine airtight chamber 10 connected to worker lifting equipment can be almost horizontally communicated with each other for improving workability. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic caisson and a pneumatic caisson which are provided above a slab and which extend horizontally along the slab and have a wide internal space and a good workability. Excavation, management of excavators, recovery, etc.

[0002]

2. Description of the Related Art Conventionally, in excavation work using a pneumatic caisson method, an overhead traveling excavator is movably provided on a rail laid on the ceiling of a pneumatic caisson slab, and work is performed using this overhead traveling excavator. After the subsidence of the caisson is completed, the excavator is dismantled under high pressure in the work chamber and is carried to the ground.

In recent years, an excavator recovery lock has been developed and put into practical use, which recovers the excavator after subsidence to a vertical cylindrical lock without disassembling it in a working room under high pressure.

Further, in a pneumatic caisson with a large depth, decompression is carried out while sucking a mixed gas or an oxygen gas in a vertical cylindrical mannequin.

[0005]

When the caisson is completely subsided, the pressure inside the working chamber is generally highest, and the excavator must be disassembled for a long time and under the high pressure. In particular, due to recent advances in mechanical technology, excavation work is performed from a remote control room on the ground, so workers do not have to enter the work room on a daily basis, and only when the subsidence is completed and the excavator is dismantled and recovered, the high pressure Will be exposed to for a long time.

Therefore, the incidence of latent disease increases,
It is an issue.

Further, since the conventional recovery lock is a recovery lock having a vertical cylinder, it must be carried out with the boom lowered for inspection and maintenance. Therefore, the space between the lock and the excavator is narrow, and the opening is small. Since there are parts, there are safety issues such as crashes and pinching.

In collecting the excavator, a method has been proposed in which the excavator is housed in a vertical recovery shaft for maintenance. However, since the vertical recovery shaft is a vertical type, excavation is performed. Not only is there an opening around the machine, the work floor is narrow and it is unsafe, and it is not possible to confirm the operation of the excavator. Further, since the excavator is housed in the vertical shaft, there is a problem that it cannot be recovered unless the upper material lock, shaft, etc. are removed.

The present invention has been made in order to solve the above problems, and its purpose is to quickly recover an excavator and to keep a stable foot outside the working room under atmospheric pressure. Pneumatic caisson equipped with steel or concrete air lock chamber and excavator management and recovery method that can be inspected and maintained in the environment and workers can safely and swiftly move on the ground and inside the lock chamber. To provide.

[0010]

According to the present invention, in a pneumatic caisson for excavating an excavation ground D in a pneumatic working chamber C provided below a slab B via an excavator 14, an upper part of the slab B is provided. Almost horizontally to the caisson lock room 7
The caisson lock room 7 is provided with a machine lock room 10 and a man lock room 11, and the excavator 14 can be stored in the caisson lock room 10 in a substantially horizontal posture. Has been achieved.

Further, the caisson lock chamber 7 is an assembly type of a steel end plate, an intermediate cylinder, etc., and the machine lock chamber 10 and the man's lock chamber 10 are provided by a partition member having a partition hatch 12 provided therein. The air lock chamber 11 is formed so that it can be communicated substantially horizontally through the partition hatch 12, and both can be moved in and out.

Further, the machine lock chamber 10 and the man lock chamber 11 are separately formed and are connected to each other through a connecting cylinder 34 having a hatch that can be opened and closed.

The man-lock chamber 11 is divided into a plurality of chambers by a partition member having a partition hatch 12 provided inside.

The lower part of the caisson lock room 7 can communicate with the working room C via a hatch, and the excavator carry-in / carry-out and sediment carry-out equipment a is connected to the upper part of the caisson lock room 7 so that the man-lock box 11 can be connected. The lower part of is capable of communicating with the working room C through a hatch, and is characterized in that the worker lifting equipment is connected.

Further, the mannrel lock chamber 11 is provided with a mixed gas or oxygen gas suction facility, and the gas hose thereof can be drawn into the working chamber C.

Further, the inside of the caisson lock chamber 7 provided at the upper part of the slab B is partitioned into a machine lock chamber 10 and a man lock chamber 11 via a partition hatch 12 which can be opened and closed, and the machine lock chamber 1 is described.
The lower part of 0 is able to communicate with the working chamber C through the hatch, and the excavator loading / unloading and sediment carrying-out facility a is connected to the upper part, and the lower part of the man-man lock chamber 11 is communicated with the working chamber C through the hatch. In addition to being possible, the worker elevating equipment is connected, and the excavated earth and sand in the working room C excavated through the excavator 14 can be carried out through the machine air lock chamber 10 and the excavator carry-in / carry-out / sand carry-out facility After retracting the excavator 14 in the working chamber C into the machine lock chamber 10 and storing it, the hatch between the machine lock chamber 10 and the work chamber C is closed to reduce the pressure, and then the man lock chamber 11 is connected. The hatch between the machine lock chambers 10 is opened, and the excavator is inspected and maintained or disassembled.

Further, in the excavation work using the excavator 14, the mantle lock chamber 11 is provided with a mixed gas or oxygen gas suction facility, and the gas hose can be drawn into the working chamber C to enable the work. It is characterized by having done. In this case, the Mann's lock chamber 11 having a mixed gas or oxygen gas inhalation facility is divided into a plurality of chambers through a mirror plate having a partition hatch 12 which can be freely opened and closed, and can enter and leave each other through the partition hatch 12. Is characterized by.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The most characteristic feature of the present invention is that a caisson lock chamber is provided substantially horizontally above a slab, and this caisson lock chamber has a machine and a man lock chamber. The excavator housed in the machine lock room is stored in a substantially horizontal position, allowing safe inspection and maintenance in a wide scaffolding space, and a man lock room and machine lock room connected to the worker lifting equipment. Since it is possible to communicate almost horizontally, it is safe and workable, and both can freely go in and out, and depending on the number of excavators used in the work room, the size of the machine lock room can be adjusted with the intermediate cylinder. The structure is such that a sufficient internal space can be easily secured, and the man-neck room can have a size corresponding to the number of workers.

[0019]

First Embodiment FIG. 1 shows a first embodiment of the present invention. In this pneumatic caisson, a caisson lock chamber made of steel is provided in a substantially horizontal direction above the slab to secure a wide space for the slab. This caisson lock room is composed of a machine lock room and a man lock room, and an excavator loading / unloading and sediment loading facility is connected to the upper part of the machine lock room, and the worker's lock room is connected to the upper part of the worker lock room. Shows the state where the lifting equipment is installed and the excavator is stored in the machine lock room.

That is, in the figure, A is a blade a at the bottom.
With a caisson skeleton made of concrete with
A slab B provided with a work chamber excavator rail 2 is formed on the ceiling 1, and a pneumatic working chamber C is formed below the slab B. D is the excavated ground.

The slab B is formed with a plurality of openings 3 and 4 communicating upward from the working chamber C. One opening 3 is provided with a material anchor ring 5 and the other opening 4 is provided with a man anchor ring 6. The anchor rings 5 and 6 are connected to a steel caisson lock chamber 7 provided above the slab B via a material work chamber hatch 8 and a man work chamber hatch 9, respectively.

The caisson lock room 7 is installed above the slab B in a substantially horizontal direction along the upper surface of the slab B.
The interior is roughly divided into a machine lock room 10 and a man lock room 11.
It is divided into and. This division is performed by a partition wall-shaped end plate 13 having an openable / closable partition hatch 12 provided at an appropriate position in the caisson air lock chamber 7.

In the illustrated state, a part having a wide space on the left side accommodates the excavator 14, a machine lock room 10 used for management such as inspection and maintenance and dismantling, and a space on the right side for workers to enter and exit. It is a man lock room 11 used for.
This arrangement can be reversed.

The machine lock room 10 has an internal space in which the excavator 14 can be housed in a substantially horizontal or substantially vertical posture, and this space is secured by the partitioning intermediate cylinder 15 with material hatch and the material end plate. A material intermediate cylinder 17 which can be freely attached and detached is connected to the cylinder 16. Since these are assembling types such as steel bolts (not shown), an appropriate number of material intermediate cylinders 17 can be provided if necessary, and they can be diverted to other ones and can be combined according to the situation. is there.

An excavator rail 18 for suspending the excavator 14 is provided on the ceiling of the machine lock room 10.

A deformed shaft 19 for loading and unloading the excavator 14 into and out of the machine air lock chamber 10 is connected to an upper portion of an appropriate position of a partition intermediate cylinder 15 with a material hatch forming the machine air lock chamber 10.

This modified shaft 19 is used for the machine lock room 10.
Is provided substantially above the material anchor ring 5 provided below.

The deformed shaft 19 is provided for quickly putting the excavator 14 into the machine air lock chamber 10 or for carrying it out. If there is no deformed shaft 19 having such an expanded diameter, the caisson is not provided. The height of the lock room 10 must be increased. Therefore, the caisson lock room 10
The deformed shaft 19 is not particularly required if the size of the shaft is sufficiently large.

Above the deformed shaft 19, a material shaft 20 having a diameter smaller than that of the deformed shaft 19 and which can be replenished by bolts or the like is provided. Above the material shaft 20, a lower hatch 21 and an upper hatch 22 are provided. A material lock 23 is provided, and the deformed shaft 19, the material shaft 20, the material lock 23, and the like constitute an excavator loading / unloading / sand loading / unloading facility a. Of course, this equipment can also be used for loading and unloading parts of the excavator 14.

The machine lock chamber 10 is composed of a material end plate cylinder 16, a material intermediate cylinder 17 and a material hatched intermediate cylinder 15, and the man lock chamber is adjacent to the machine lock chamber 10. 11 is composed of a bottom shaft upper connection type manlock 24 connected to an intermediate cylinder 15 with a material hatch.

The steel caisson lock chamber 7 made of these is an assembly type of bolts and the like, and can be divided into a plurality of parts. In the example of FIG.
5, the material intermediate cylinder 17, the material end plate cylinder 16, and the bottom shaft upper connection type man lock 24 which is a part of the man lock chamber 11.

The machine lock room 10 and the man lock room 11 are
A partition hatch (12) that can be freely opened and closed and that allows workers to easily pass through can communicate with each other, allowing workers to freely enter and exit both sides.

A man lock hatch 25 is connected to the upper part of the man air lock chamber 10 by a bottom part of an upper mount type elevator bottom shaft 26 which constitutes a worker elevating equipment a.
The upper mount type elevator bottom shaft 26 is provided substantially above the lower man anchor ring 6.

An elevator shaft 27 is connected to the upper portion of the upper mount type elevator bottom shaft 26, and a top shaft 28 is connected to the upper portion thereof, which constitutes worker lifting equipment b.

An elevator 29 is vertically movable inside the upper mount type elevator bottom shaft 26, the elevator shaft 27, etc., and an elevator hole 30 is formed around the elevator 29 in the upper mount type elevator bottom shaft 26. There is.

Next, the work of this embodiment using the excavator 14 will be described.

The excavated ground D in the work room C is excavated by the excavator 14, and the excavated earth and sand is opened by opening the material work room hatch 8 below the machine locker room 10 to carry in and out the excavator and carry out sediment. Is carried out to the ground side by an appropriate method such as using a vertically movable earth and sand bucket (not shown in FIG. 1), and the caisson skeleton A is settled.

The caisson skeleton A is settled at a predetermined position,
After the excavation work is completed, the excavator 14 is recovered.

Upon recovery, the excavator 14 is hoisted from the work chamber C in which the material work chamber hatch 8 is opened via the excavator hoisting device 32 having a well-known structure including the excavator hoisting wire 31 and the like. , Machine lock room 1
After collecting in 0, the material work chamber hatch 8 is closed, the man work chamber hatch 9 is also closed, and the machine air lock chamber 10 and the man air lock chamber 11 are depressurized to atmospheric pressure via a well-known depressurizing means not shown.

Next, a case will be described in which an operator performs inspection and maintenance or dismantles to manage the excavator 14 collected in the machine lock room 10.

The worker gets on the elevator 29 from the top shaft 28 to the worker elevating equipment a and descends inside the elevator shaft 27 by the elevator 29 to the upper mount type elevator bottom shaft 26. And the worker
After getting off from the elevator 29, the man lock hatch 25 provided under the elevator hall 30 is opened, and the man lock chamber 11 depressurized to the atmospheric pressure is entered.

An operator in the man air lock chamber 11 opens the partition hatch 12 and moves to the machine air lock chamber 10. This movement can be performed easily and safely because the machine lock chamber 10 and the man lock chamber 11 communicate substantially horizontally.

The excavator 14 raises the boom and makes the boom almost horizontal from the position of the arrow as shown by the arrow.
This mechanism and operation are well known. An excavator rail 18 is provided in the large machine lock room 10, and the excavator 14 can be turned to some extent by an excavator turning body 14a. Further, the inside of the machine lock room 10 has a space capable of expanding and contracting the boom.

According to this embodiment, the material lock chamber 10 and the man lock chamber 11 are installed substantially horizontally on the upper part of the slab.
Are connected by a partition hatch 12, and the excavator 14 is pulled up from the working room C to the machine lock room 10 where it can be safely inspected and maintained at atmospheric pressure and is almost horizontal via the man lock room 11 and the partition hatch 12. The worker can be moved. Material lock 23 for inspection and maintenance
It is also possible to unload and replace parts and the like from inside, and disassemble the parts in the machine lock chamber 10 to easily take out the parts from the material shaft 20.

[0045]

[Embodiment 2] FIGS. 2 and 3 show a second embodiment of the present invention. In this embodiment, the worker elevating / lowering equipment (a) is laterally displaced, and the lower side portion thereof is located on the mannkey room 11 side. The bottom shaft side connecting type manlock 24a is connected to the end plate side part, and the bottom part of the end plate mounting type elevator bottom shaft 26a is characterized by being installed on the slab B.

That is, a connecting cylinder is formed on the side of the end plate-mounted elevator bottom shaft 26a which constitutes the worker lifting equipment a. Further, the connecting cylinder is connected to a corresponding position of the end plate of the man lock chamber 11 and connected to the connecting portion. A man-lock hatch 25 that can be opened and closed is provided.

Further, although the machine lock chamber 10 is shown as an example of the structure in which the material intermediate cylinder 17 shown in FIG. 1 is omitted, it may be provided if a large space is desired.

FIG. 2 shows a state in which the excavator 14 is introduced into the working chamber C and the excavated earth and sand is carried out by using the earth and sand bucket 33.

The earth and sand bucket 33 is provided so as to be hung and hoisted at a position where it can be vertically moved up and down from the working chamber C via the material lock 23, the material shaft 20 and the like.

Since the other structure is the same as that of the first embodiment, the same members are designated by the same reference numerals and detailed description thereof will be omitted.

[0051]

[Third Embodiment] FIG. 4 is a plan view of the essential portions of a third embodiment of the present invention.

In the first, second and embodiment of FIGS. 1, 2 and 3, the machine air lock chamber 10 of the caisson lock chamber 7 is
Although the Mann's lock chamber 11 is integrally provided along the length direction thereof, the Caisson lock chamber is configured in the third embodiment and the fourth and fifth embodiments shown in FIGS. 5 and 6 described later. The machine lock chamber 10 and the man lock chamber 11 are separated from each other, and are connected to each other by a connecting cylinder 34 having a size that allows an operator to pass through. In addition, the points of the assembly type such as the bolt made of steel are the same as those of the first and second embodiments.

Various arrangements are conceivable, depending on the size and shape of the caisson skeleton A, the internal space, the number of workers entering and leaving, the number of excavators 14 stored in the machine lock room 10, and the like. , The optimal placement is selected.

That is, in the third embodiment, the man-lock chamber 11 composed of the man-lock 24b is attached to the machine-lock chamber 10 on the end plate of the intermediate cylinder 15 'with the material hatch at the end of the machine-lock chamber 10. The machine lock chamber 10 and the man lock chamber 11 are connected in a direction substantially orthogonal to each other by a connecting cylinder 34.

A work chamber C is provided at the bottom of the intermediate cylinder 15 'with a material hatch forming the machine lock room 10 on the side of the connection cylinder 34.
A man-lock hatch 8 that opens and closes is provided.

The inside of the man lock chamber inside the man lock 24b is firstly provided with an end plate having a partition hatch 12 which can be opened and closed.
It is divided into a man's lock chamber 11 and a second man's lock chamber 11 '.

The first man's lock chamber 11 is connected to the machine lock chamber 10 via a connecting cylinder 34, and a man's work chamber hatch 9 capable of communicating with the work chamber C is provided in the lower portion.

The end plate-mounted elevator shaft 26a is connected to the second man-lock chamber 11 'through a connecting tube 34. An openable and closable man-lock hatch 25 is provided in the connecting cylinder 34 on the second man-lock chamber 11 'side.

The end plate-mounted elevator shaft 26a is provided on the machine lock room 10 side, an elevator 29 that can be raised and lowered is provided inside, and an elevator hall 30 is provided in front of the elevator 29.

FIG. 5 is a plan view of the essential portions of the fourth embodiment of the present invention.

In the embodiment shown in FIGS. 1 and 2, the machine lock chamber 10 is provided with the man lock chamber 11 in series in the lateral direction along the length thereof, but in this embodiment, it is almost the same. An example in which the man lock chamber 11, the end plate mounting type elevator bottom shaft 26a, etc. are sequentially arranged and connected in the vertical direction, that is, in a direction substantially orthogonal to the machine lock chamber 10 and substantially parallel to the machine lock chamber 10. Show.

That is, the end of the man lock 24b constituting the man lock chamber 11 is connected to the body end of the intermediate cylinder 15 'with material hatch of the machine lock chamber 10 through the connecting cylinder 34, and this connection cylinder is connected. A man-lock hatch 25 that can be freely opened and closed is provided at the front end of the machine lock room 10 side of 34.

The inside of the man's lock chamber is divided into the first man's lock chamber 11 and the second man's lock chamber by an end plate having a partition hatch 12 which can be opened and closed.
It is divided into a man's lock room 11 '.

At the lower part of the first man-lock chamber 11, a man-work chamber hatch 9 which can communicate with the work chamber C is provided.

The end plate-mounted elevator shaft 26a is connected to the second man-lock chamber 11 'through a connecting tube 34. An openable and closable man-lock hatch 25 is provided at the front end of the connection cylinder 34 on the second man-lock chamber 11 'side.

An elevator 29 that can be raised and lowered is provided inside the end plate-mounted elevator shaft 26a, and an elevator hall 30 is provided in front of the elevator 29.

FIG. 6 is a plan view of the essential portions of the fifth embodiment of the present invention.

In this embodiment, the man lock chambers arranged in parallel to the machine lock chamber 10 are formed in a large size so as to accommodate a large number of workers, and the inside of the man lock chamber is made larger. It is divided into the first to third Manki lock rooms 11a to 11c,
The first and third man lock chambers 11a and 11b are respectively connected to the machine lock chamber 10 via the connection cylinders 34, and workers are simultaneously or selectively placed in the machine lock chambers 10 from the respective connection cylinders 34. It is characterized by being able to enter and leave and improving workability.

That is, the Mann's lock chambers are divided into first to third Man's locks chambers 11a to 11c through the end plate having the two partition hatches 12 which are provided at appropriate positions and are separated from each other. .

The first man's lock chamber 11a provided at one end is connected to the material intermediate cylinder 17 of the machine lock chamber 10 via a connecting cylinder 34.

The third man lock chamber 11b on the other end side on the opposite side is connected to the intermediate cylinder 15 'with a material hatch forming the machine lock chamber 10 via a connecting cylinder 34.

Partition hatches 12 are provided on both sides of the first,
The second provided between the third man lock chambers 11a and 11c
Elevator bottom shaft 26 in the man lock room 11c
b is connected through the connection tube 34.

The elevator bottom shaft 26b is provided with an elevator 29 which can be raised and lowered, and an elevator hole 30 is provided in the front portion thereof.

A man-lock hatch 25 is provided on each connecting cylinder 34.

As described above, workability can be improved by dividing the man-lock chamber into a plurality of parts. The multiple-partition structure in the man lock room can also be applied to the embodiments shown in FIGS. In this way, by providing a plurality of workers, the work of the worker and the decompression for the worker can be performed in different chambers, respectively, and in the deep depth caisson, the mixed gas hose and the like can be drawn out from the opening directly above the slab. It is possible, and because the man-lock room is installed almost horizontally, it is good for the worker to keep down the pressure for a long time, and it is easy to install the mixed gas and oxygen gas inhaler in the man-lock room You can also do it.

[0076]

Sixth Embodiment That is, FIG. 7 is a modification of the Mann's lock chamber in the embodiment shown in FIG. 1 and FIG. It is divided into a plurality of second man-lock chambers 11a ′ and 11b ′, and the worker descends into the work chamber C while inhaling the helium mixed gas from the second man-lock chamber 11b ′ and inspects the excavator 14. An example of the configuration that enables maintenance work is shown below.

In the sixth embodiment, the first man lock chamber 1
An upper mount type elevator bottom shaft 26 is connected to the bottom shaft upper connecting type manlock 24 via a manlock hatch 25 at 1a '. Also, the machine lock room 10
A material working chamber hatch 8 is provided in the lower part of the above, and an excavator loading / unloading and sediment carrying-out facility A such as the deformed shaft 19 and the material shaft 20 is connected to the upper part.

A helium mixed gas hose 36 which can be drawn into the working chamber C is provided in the first man-lock chamber 11a ', where the worker wears a suction mask 37 connected to the helium mixed gas hose 36. However, the man working room hatch 9 is opened in the adjacent room, and it is possible to descend into the working room C and perform work such as inspection of the excavator 14.

Further, the front end of the man working chamber intermediate cylinder 38 provided with the two partition hatches 12 is connected to the end plate on the machine lock chamber 10 side and the material hatching partition intermediate cylinder 15 ', and the man work chamber intermediate A second man lock chamber 11b 'is formed in the cylinder 38, and a helium mixed gas suction facility and its hose 36, an oxygen gas suction facility and its hose (not shown) are provided in this man lock chamber 11b'. A plurality of workers are provided so that a worker can inhale a helium mixed gas, oxygen gas, or the like when necessary during depressurization. This equipment is also provided in the first man lock chamber 11a as described above.

The combination of the man-lock chamber and the machine-lock chamber 10 having the above-mentioned structure, which is installed substantially horizontally to the slab B, is not limited to the embodiment shown in FIG. 7, but may be the one shown in FIGS. . Further, the helium mixed gas suction equipment can also be applied to those shown in FIGS.

In the first to seventh embodiments, it is needless to say that the worker can move in and out of the working room C from the ground not by the elevator but by the spiral stairs or the like.

In addition, as a matter of course, in each of the lock rooms shown in FIGS. 1 to 7, a TV camera is provided between the lock room and the monitoring room on the ground,
A monitor, a voice communication means, an air supply / exhaust valve, etc. are provided as in the general man-lock.

[0083]

【The invention's effect】

As described above, according to the present invention as set forth in claim 1, since the caisson lock chamber 7 having the machine lock chamber 10 is provided substantially horizontally above the slab B, a wide space is provided in the lateral direction. As a result, the excavator 14 can be stored substantially horizontally, and management such as inspection and maintenance, dismantling work, etc. can be performed safely and easily.

Further, according to the second aspect, since the caisson lock chamber 7 is an assembly type, it is possible to increase or decrease the intermediate cylinder of the relay as necessary to obtain a desired internal space, and to remove or divert it. It is also economical because there is no waste, and since the machine lock chamber 10 and the man lock chamber 11 can communicate with each other almost horizontally, the worker can easily go in and out, it is safe and the workability is high. Is good.

According to the third aspect, the machine lock room 10
Since it is possible to combine and the man air lock chamber 11 in an appropriate arrangement, it is possible to appropriately cope with the size and shape of the caisson skeleton A, the internal mechanism, the number of excavators accommodated, the number of workers, and the like.

According to the fourth aspect, since the mannequin chamber is divided into a plurality of chambers, one chamber can be supplied with a mixed gas and the other chamber can be supplied with oxygen or both can be used. It is possible to create a room with a desired function and improve the health management and workability of workers.

According to the fifth aspect, it is possible to easily pull the excavator into the machine lock chamber 10, manage the excavator 14, and collect the excavator.

According to the sixth aspect, the health of the worker can be protected and the work efficiency can be improved.

According to the seventh aspect, management, disassembly, recovery, etc. of the excavator 14 can be performed easily and quickly.

According to claim 8, in addition to the above effects,
The excavation work can be performed without damaging the health of the worker.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional explanatory view of a first embodiment of the present invention.

FIG. 2 is a schematic vertical sectional explanatory view of a second embodiment of the present invention.

FIG. 3 shows a plan view of a caisson lock chamber portion of a second embodiment of the present invention.

FIG. 4 shows a plan view of a caisson lock chamber portion of a third embodiment of the present invention.

FIG. 5 is a plan view of a caisson lock chamber portion according to a fourth embodiment of the present invention.

FIG. 6 is a plan view of a caisson lock chamber portion according to a fifth embodiment of the present invention.

FIG. 7 shows a schematic vertical cross-sectional explanatory view of a sixth embodiment of the present invention.

[Explanation of symbols]

A caisson body a blade B Slab C work room D excavated ground A Excavator carry-in and carry-out and sediment carry-out facility B worker lifting equipment 1 ceiling 2 Work room excavator rail 3, 4 openings 5 Material anchoring 6 Man anchor ring 7 Caisson lock room 8 Material work room hatch 9 Man's work room hatch 10 machine lock room 11 Man's lock room 12 partition hatches 13 End plate 14 excavator 15 Partition intermediate cylinder with material hatch 15 'Intermediate tube with material hatch 16 Material End Plate Tube 17 Material Intermediate Tube 18 excavator rail 19 Deformed shaft 20 Material shaft 21 Lower hatch 22 Upper hatch 23 Material Lock 24 Bottom Shaft Upper Connection Type Man Lock 24a Bottom shaft side connection type man-lock 24b man rock 25 Man Rock Hatch 26 Top-mounted elevator bottom shaft 26a End plate-mounted elevator bottom shaft 27 Elevator shaft 28 Top Shaft 29 elevator 30 elevator halls 31 Excavator lifting wire 32 Excavator lifting device 33 earth and sand bucket 34 Connection tube 35 Material connection end plate tube 36 Helium mixed gas hose 37 Inhalation mask 38 Man Working Room Middle Tube 39 Oxygen gas hose

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Jiro Kakuda             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation (72) Inventor Hiroshi Hosaka             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation (72) Inventor Masanori Matsumoto             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation (72) Inventor Naoaki Kouzuki             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation (72) Inventor Ken Oshimi             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation (72) Inventor Katsunori Takamura             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation (72) Inventor Masaki Miyashita             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation (72) Inventor Haruo Hasegawa             1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken             Inside the corporation

Claims (9)

[Claims] 1. A pneumatic caisson for excavating an excavated ground (D) in a pneumatic working chamber (C) provided below a slab (B) through an excavator (14), wherein the slab (B) is used. A caisson lock room (7) is provided substantially horizontally above the machine lock. The caisson lock room (7) includes a machine lock room (10) and a man lock room (11), and the machine lock room (11) is provided. 10) A pneumatic caisson characterized in that the excavator (14) can be housed in a substantially horizontal posture. 2. The partition according to claim 1, wherein the caisson lock chamber (7) is an assembly type of a steel end plate, an intermediate cylinder and the like, and has a partition hatch (12) provided therein. The member forms the machine lock chamber (10) and the man lock chamber (11), and the partition hatch (1).
It is possible to connect both chambers in a substantially horizontal state via 2),
A pneumatic caisson characterized by allowing both sides to enter and leave. 3. The machine lock chamber (10) according to claim 1, wherein the machine lock chamber (10) and the man lock chamber (11) are formed separately, and are connected to each other through a connecting cylinder (34) having an openable and closable hatch. Pneumatic caisson characterized by being done. 4. The pneumatic caisson according to claim 1, wherein the man-lock chamber (11) is divided into a plurality of chambers by an end plate having a partition hatch (12) provided therein. 5. The caisson lock room (7) according to claim 1, wherein a lower part of the caisson lock room (7) can communicate with the working room (C) through a hatch, and an upper part carries an excavator carry-in / carry-out and sediment carry-out facility ( The pneumatic caisson is characterized in that the lower part of the man lock room (11) is connected to the working room (C) through a hatch and that the worker lifting equipment is connected. 6. The mixed gas or oxygen gas suction facility according to claim 1, wherein the man-lock chamber (11) is provided with:
The pneumatic caisson is characterized in that the gas hose can be drawn into the working chamber (C). 7. A caisson lock chamber (7) provided in a substantially horizontal direction above the slab (B) comprises a machine lock chamber (10) and a man lock chamber (11), and the machine lock chamber is provided. (10)
The lower part of the can be communicated with the work room (C) through the hatch, and the upper part of the excavator carry-in and carry-out and sediment carry-out facility (a)
The lower part of the man lock room (11) can be communicated with the working room (C) through a hatch, and the worker elevating equipment is connected, and the work excavated through the excavator (14). The excavated earth and sand in the chamber (C) is stored in the machine lock room (1
0) and the excavator carry-in / carry-out and carry-out can be carried out via the earth and sand carrying-out facility (a), and the excavator (14) in the working chamber (C) is drawn into the machine lock room (10) and stored. After closing the hatch between the machine lock chamber (10) and the work chamber (C) to reduce the pressure, the hatch between the man lock chamber (11) and the machine lock chamber (10) is opened to check the excavator. An excavation, excavator management, and recovery method in a pneumatic caisson characterized by performing maintenance or disassembly. 8. The excavator (14) according to claim 7.
In the excavation work using, the man-lock room (11) is provided with a mixed gas or oxygen gas suction equipment, and the gas hose can be drawn into the work room (C), which enables the work. Excavation, excavator management, and recovery method in pneumatic caisson. 9. The Mann's lock chamber (11) having a mixed gas or oxygen gas suction facility is divided into a plurality of chambers through an end plate having a partition hatch (12) which can be freely opened and closed. A method for excavation, excavator management, and recovery in a pneumatic caisson, which is capable of mutually entering and exiting via a partition hatch (12).