JP3246672B2 - Pneumatic caisson worker lifting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic caisson worker elevating facility used when constructing a concrete underground structure underground.

[0002]

2. Description of the Related Art In recent years, in the construction of this type of pneumatic caisson, caisson construction has been performed at a large depth. At that time, a worker sometimes uses a construction elevator as a facility for raising and lowering the caisson's work room. When entering and exiting the caisson's working room from this construction elevator, pressurize and decompress the caisson's working room using a concrete lock chamber built above the ceiling of the concrete working room. I do.

[0003]

However, according to the conventional example described above, every time a caisson is constructed at a large depth,
A lock chamber made of concrete is required, and there is a problem that greatly affects the construction cost and the construction period. In addition, there has been a problem that the workability is poor because no special measures are taken for the worker to easily enter and exit the work room below the caisson from the lock chamber.

The present invention has been proposed in view of the above, and an object of the present invention is to replace a concrete lock chamber with a steel man lock which can be easily attached and detached, to a ceiling of a work room. In a new pneumatic caisson that can be reused, has versatility, reduces construction costs, allows workers to easily enter and exit the work room, improves workability, and shortens the construction period. An object of the present invention is to provide a worker lifting device.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a shaft 1 which extends from a ground side to a ceiling a of a working chamber of a pneumatic caisson main body A and has an elevator 3 which can be moved up and down therein. detachably connected, and the the working chamber ceiling a of anchoring a steel detachably attached to 6 parts man lock 4, provided in the anchor ring 6, and movable up and down in the working chamber B And a slide type elevating shaft 7 having a pneumatic door 8 for worker entry and exit. A flange 18 is provided on a lower outer peripheral portion of the slide type elevating shaft 7, and a lower edge outer peripheral portion of the cylindrical portion of the man lock 4 is provided. Is provided with a lower flange 16 which can freely come and go via a flange 18 and a packing 17 , and
An upper flange portion 9 is provided on the upper outer peripheral portion of the
Is provided et is, this is the upper part of the upper flange portion 9 is supported hardware 10 is provided, lifting the wire 1 on the support hardware 10
1 is attached to the other end of the lifting wire 11
Is pulled Roll the cell culture along receiving roller 12 supported on the inner wall and the like of the man lock 4, is fixed to the wire winding drum 13, the drum winding of the wire winding drum 13 connected thereto and an oil pressure cylinder 14 The take-up wire 15 is connected, the wire take-up drum 13 is rotated by these, and the slide type elevating shaft 7 is configured to move up and down, thereby achieving the above object. The wire winding drum 13 has a plurality of winding drums having different diameters. Further, a steel man lock 4 is provided on the shaft 1 so as to be detachable by means of bolts and nuts.
In addition, the lifting wire 11, the wire winding drum 1
3. Hydraulic cylinder 14 and drum winding wire 1
Reference numeral 5 denotes a configuration provided in the man lock 4.

[0006]

As described above, according to the present invention, a steel man lock 4 which can be detachably attached to the ceiling a of the work room is changed to a lock chamber of the installation type.
When the construction is completed, the manlock 4 can be removed and reused for another use, and the manlock 4 itself has versatility and is economical. Further, the man lock 4 is provided with a slide type elevating shaft 7 which can be moved up and down in the work room B, so that the worker can easily go in and out of the work room B, thereby improving workability.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an entire configuration of a worker elevating system for a pneumatic caisson according to the present invention.
In the figure, A denotes a main body of a concrete pneumatic caisson, and a work room B partitioned by a work room ceiling a is formed below the main body. Also, 1
Is a cylindrical shaft erected above the ceiling a of the work room and extends to the ground side, and is successively added as the main body A sinks.

A guide rail 2 is provided in the shaft 1, and a guide elevator 2 is provided on the guide rail 2 so as to be movable up and down. The worker can move up and down inside the shaft 1 by the construction elevator 3 along the guide rail 2 attached to the shaft 1 under atmospheric pressure. An opening 1a is formed in the lower side surface of the shaft 1, and a man lock 4
Is connected to the communication pipe 1b. An openable and closable pneumatic door 5 is provided at a connection portion of the manlock 4, and the worker can open the manlock 4 under atmospheric pressure by opening the pneumatic door 5 for entering and exiting the manlock 4. . The man lock 4 is easily detachable from the shaft 1 by means of bolts and nuts between the flanges b of the shaft 1 via a communication pipe 1b.

Further, the man lock 4 is mounted on the ceiling a of the work room.
A bolt and a nut are attached to a portion of the anchor ring 6 installed at the bottom, and a bottomed tubular slide type shaft 7 for lifting and lowering a worker is attached to an inner portion of the anchor ring 6. Have been. A pneumatic door 8 for a worker to enter and exit is attached to a side surface of the slide type elevating shaft 7. When a worker in the work room B enters or exits, the pneumatic door 5 of the man lock 4 is closed, and the man lock 4 is pressurized until it reaches the same pressure as the work room B.
After the pressurization, as shown in FIG. 2, the slide type elevating shaft 7 is slid down to the working chamber B along the anchor ring 6 by an elevating mechanism described below. Then, the pneumatic door 8 for the worker in and out of the slide type elevating shaft 7 is opened,
Work room B can be entered.

Next, when the worker leaves the work chamber B, it enters the slide elevating shaft 7 having the same pressure as that of the work chamber B, closes the pneumatic door 8 for the worker, and slides the slide elevating shaft 7 up. . Next, the man lock 4 is depressurized to the atmospheric pressure, and the pneumatic door 5 for the worker in and out of the man lock 4 is opened,
You can get to the ground by the construction elevator.

FIG. 3 shows the details of the elevating mechanism of the slide type elevating shaft 7. That is, the slide type lifting shaft 7
The flange 18 is provided below the outer peripheral portion, the flange 18 on the lower Engaishu of the cylindrical portion of the man lock 4 and the packing 17
Freely separable via a lower flange 16 is provided, also,
An upper flange portion 9 is provided on the upper outer peripheral portion of the slide-type elevating shaft 7.
A support hardware 10 is provided on the upper part of the support hardware.
One end of a lifting wire 11 is attached to the wire, and the other end of the lifting wire 11 is routed along a receiving roller 12 supported on the inner wall of the man lock 4 and fixed to a wire winding drum 13. ing.

As shown in FIG. 4, the wire take-up drum 13 is connected to a hydraulic cylinder 14 and a drum take-up wire 15 connected to the hydraulic cylinder 14, whereby the wire take-up drum 13 is rotated and slided. The lifting shaft 7 can be raised and lowered. Note that the wire winding drum 13 has a configuration of a plurality of winding drums, and the stroke of the hydraulic cylinder 14 can be shortened by a difference in diameter of the winding drum. These are provided in the man lock 4. In addition, provided on the outer periphery of the lower edge of the cylindrical portion of the man lock 4
On the upper and lower surfaces of the lower flange 16 as described above,
Packing 17 is mounted, In no event man lock 4 is atmospheric pressure, and the lower flange 16 gasket 17
The contact of the flange 18 via the
Inside can be kept airtight. Further, when the sliding type elevating shaft 7 slides, the manlock 4 and the working chamber B have the same pressure, so that there is no air leakage from each flange portion.

[0013]

According to the present invention, when a worker moves up and down in a caisson using a construction elevator, conventionally, a lock chamber made of a concrete structure is constructed, and pressure is increased and reduced there to increase the construction elevator or Although it entered and exited the caisson work room, in this invention the man lock is made of steel and can be easily attached to and detached from anchor rings provided on the ceiling of the work room by bolts, nuts, and other appropriate attachment means. It is economical because it can be used widely for various caisson bodies, and by using this man lock, it is possible to enter and exit the construction elevator or caisson work room without building a concrete structure There are advantages that can be. In addition, since the anchor ring integrated with the man lock is provided with a shaft that can be moved up and down with respect to the work room, workers can easily enter and leave the work room using this shaft, improving workability, The construction period can be shortened. In addition, the device that allows the shaft to be moved up and down is composed of a wire for lifting and lowering, a wire winding drum, a hydraulic cylinder, a drum winding wire, and the like.
The work of assembling and removing is unnecessary and workability is good.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a pneumatic caisson worker lifting system according to an embodiment of the present invention.

FIG. 2 is an operation explanatory view of the above.

FIG. 3 shows details of the entire lifting mechanism of the sliding lifting shaft used in the present invention.

FIG. 4 shows a partial explanatory view of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft 1a Opening 1b Communication pipe 2 Guide rail 3 Construction elevator 4 Man lock 5 Man lock pneumatic door 6 Anchor ring 7 Sliding lifting shaft 8 Pneumatic door of sliding lifting shaft 9 Upper flange of sliding lifting shaft 10 Supporting hardware 11 Wire 12 Receiving Roller 13 Wire Winding Drum 14 Hydraulic Cylinder 15 Drum Winding Wire 16 Anchor Ring Lower Flange 17 Packing 18 Sliding Elevating Shaft Upper Flange A Caisson Body a Work Room Ceiling B Work Room

Claims (4)

(57) [Claims] 1. A shaft 1 extending from a ground side to a ceiling a of a work room of a pneumatic caisson main body A and having an elevator 3 which can be moved up and down inside the shaft 1.
And a steel man lock 4 removably connected to the anchor ring 6 of the ceiling a of the working room and provided in the anchor ring 6 and movable up and down into the working room B. And a sliding elevating shaft 7 having a pneumatic door 8 for entering and exiting the worker. A flange 18 is provided on a lower outer peripheral portion of the sliding elevating shaft 7, and a lower edge of the cylindrical portion of the man lock 4 is provided. An outer periphery is provided with a lower flange 16 which can be freely contacted / separated via a flange 18 and a packing 17 , and a slide type lifting shaft 7.
The upper outer peripheral portion, the upper flange portion 9 is provided, et al is, the support hardware 10 provided in an upper portion of the upper flange portion 9,
One end of an elevating wire 11 is attached to the supporting hardware 10, and the other end of the elevating wire 11 is routed along a receiving roller 12 supported on the inner wall of the man lock 4, and a wire winding drum 13. is secured to, the wire winding drum 13 is a drum winding wire 15 connected thereto and an oil pressure cylinder 14 is connected, these wires winding drum 13 is rotated by, raising and lowering the sliding elevator shaft 7 Pneumatic caisson worker lifting equipment. 2. The equipment for lifting and lowering a pneumatic caisson according to claim 1, wherein the wire winding drum 13 has a configuration of a plurality of winding drums having different diameters. 3. The pneumatic caisson worker lifting equipment according to claim 1, wherein a steel man lock 4 is detachably provided on the shaft 1 by means of bolts and nuts. 4. The lifting wire 11, the wire winding drum 13, and the hydraulic cylinder 14 according to claim 1.
And a pneumatic caisson worker elevating facility wherein the drum winding wire 15 is provided in the man lock 4.