JP2014040751A - Carry-in/out device of large-sized equipment and material, and carry-in/out method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrying-in/out device of a large-sized equipment and material in a pneumatic caisson method which can make carrying-in/out easy and shorten work period without requiring dismantlement and assembly processes of the large-sized equipment and material under a high atmospheric pressure.SOLUTION: A work chamber slab 2 and an upper slab 3 are constructed in a caisson skeleton 1. A workroom 4 is formed below the work chamber slab 2. A multifunctional air-sealed chamber 9 is formed between the work chamber slab 2 and the upper slab 3. A carrying-in/out device of a large-sized equipment and material is provided with: a first multifunctional air-sealed chamber door 14 which can go in and out of the multifunctional air-sealed chamber 9 from the workroom 4 via the work chamber slab 2 in a state that a drilling machine 5 is made almost horizontal; a doorway 12 only for operators to the multifunctional air-sealed chamber 9; and a second multifunctional air-sealed chamber door 17 installed in the upper slab 3 and allowing the drilling machine 5 housed in the multifunctional air-sealed chamber 9 to pass through in an almost horizontal state. A shaft is not installed above the second multifunctional air-sealed chamber door 17, so as to provide space above the upper slab 3, which enables operators to assemble, dismantle, repair and daily check the drilling machine 5.

Description

  The present invention is a pneumatic caisson method that is a construction method for underground structures, shafts, bridge foundations, underground rainwater storage facilities, sewage pumping stations, etc. The present invention relates to a loading / unloading apparatus for large-sized materials and materials for loading and a loading / unloading method using the apparatus.

  In the pneumatic caisson method, the excavation work to sink the caisson housing is generally performed by remote control in order to reduce the manpower work in the working room at high pressure and minimize the occurrence of decompression sickness. is there. Normally, the excavator is assembled, disassembled, repaired, and checked daily in the work room.

  If excavator replacement or large-scale repair is required during installation, disassemble the excavator to a size that can pass through the material shaft in the work chamber, and then remove the excavator for replacement or parts after repair. Through the assembly procedure.

  However, when assembling, dismantling, repairing, and daily inspection of excavators, workers must stay in a high-pressure working room for a long time, which increases the risk of developing decompression sickness. It is not preferable.

  In order to reduce such work under high atmospheric pressure, for example, in Patent Document 1, a lower slab (work chamber slab) and an upper slab are constructed in the caisson housing at a predetermined interval in the vertical direction, and below the lower slab. A working room is formed in the upper part, and a space between the lower slab and the upper slab is partitioned to form an air chamber and an excavator maintenance room.

  During repairs and daily inspections, the excavator is housed in the excavator maintenance room, the excavator maintenance room is adjusted to atmospheric pressure, and the excavator operation room is checked for operation and traveling operation. I went to find out the fault and repair it. Similarly, when disassembling and collecting the excavator after the caisson housing is set up, the excavator is accommodated in the excavator maintenance room and adjusted to atmospheric pressure, the excavator is disassembled and carried out via the material shaft, It tries to collect.

  As a result, when repairing or daily inspection when the excavator breaks down, and when dismantling and collecting the excavator after excavating the ground to sink the caisson housing, workers do not enter the working room under high pressure. The required work can be performed efficiently and safely.

  Further, in Patent Document 2, in a large-scale pneumatic caisson, an excavator recovery chamber is provided by a partition wall above the slab, and the excavator in the work chamber is recovered in the excavator recovery chamber using a traverse frame and a lifting device. Yes. After reducing the pressure in the excavator collection chamber to atmospheric pressure, performing inspections, repairs, testing, etc., increase the pressure in the excavator collection chamber to the same pressure as the work chamber and return it to the running rail in the work chamber. , Again used for excavation of natural ground at the bottom of the work room.

  According to the technology of this Patent Document 2, it is possible to easily carry out management or collection work such as inspection / repair of excavator, carry in / out materials, carry out excavation earth and sand, and move workers. It can be done safely and efficiently. Furthermore, it is possible to satisfactorily manage the safety of workers with respect to changes in atmospheric pressure inside and outside the work room.

Japanese Patent No. 3405537 Japanese Patent No. 3898581

  As described above, according to the techniques of Patent Documents 1 and 2, it is possible to relatively easily perform management or recovery work such as inspection and repair of an excavator while reducing the work of a worker under high atmospheric pressure. However, there is still room for improvement with regard to loading and unloading large equipment such as excavators.

  In other words, materials and machinery / equipment are normally carried into and out of the work chamber in the pneumatic caisson method through a cylindrical material shaft having an inner diameter of about 1 m. For this reason, materials and equipment that can be carried in and out are limited to sizes that can pass through the material shaft, and large materials and equipment such as excavators need to be disassembled and assembled, resulting in long periods of high-pressure work and prolonged construction periods. It becomes a factor.

  In addition, in the techniques disclosed in Patent Documents 1 and 2, the excavator can be assembled, disassembled, repaired, and inspected daily under atmospheric pressure, and the time for workers to work under high atmospheric pressure can be reduced. However, since management of inspection and repair of excavators must be performed in a limited space, there is a problem that further improvement in work efficiency is required.

  The present invention has been proposed in view of the above, and the object of the present invention is to remove and assemble large-sized materials and equipment in a pneumatic caisson method under high atmospheric pressure and / or caisson housing without the need for disassembly and assembly processes. An object of the present invention is to provide an apparatus for carrying in / out a large-sized material / equipment capable of facilitating the process and shortening the construction period, and a carrying-in / out method using this apparatus.

  In addition, another object of the present invention is to improve the efficiency of management such as inspection and repair of excavators in the pneumatic caisson method, and to carry in and out large-sized materials and equipment that can further improve work efficiency and safety, It is another object of the present invention to provide a loading / unloading method using this apparatus.

In order to achieve the above-mentioned object, a large-sized material loading / unloading device in the pneumatic caisson method according to claim 1 of the present invention is configured such that a work room slab 2 and an upper slab 3 on the caisson housing 1 are vertically defined. Built at intervals, a work room 4 is formed below the work room slab 2, and a space is provided between the work room slab 2 and the upper slab 3 for assembling, dismantling, repairing, and daily inspection of the excavator 5. In addition, a multi-function gas chamber 9 capable of increasing and decreasing the pressure inside the room to the pressure inside the working chamber 4 and the atmospheric pressure is formed,
A first multifunctional air chamber door 14 that can enter and exit the multifunctional air chamber 9 through the work chamber slab 2 with the excavator 5 in a substantially horizontal state, and the multifunctional air The excavator 5 accommodated in the multifunctional air chamber 9 is placed almost horizontally on the entrance 12 dedicated to the worker in the indoor chamber 9 and the upper slab 3 which is the ceiling of the multifunctional air chamber 9. A second multifunctional air chamber door 17 to be passed,
There is no shaft above the second multifunctional air chamber door 17, and a space for assembling, dismantling, repairing and daily inspection of an excavator is provided on the upper slab 3.

In order to achieve the above object, a large-sized material and material loading / unloading device in the pneumatic caisson method according to claim 2 of the present application has a caisson housing 1 and a work room slab 2 and an upper slab 3 on the upper side. A work chamber 4 is formed below the work chamber slab 2 at a predetermined interval, and a space where the excavator 5 can be assembled, disassembled, repaired, and routinely inspected between the work chamber slab 2 and the upper slab 3 is formed. And a multi-function gas chamber 9 capable of increasing and decreasing the atmospheric pressure in the working chamber 4 to atmospheric pressure and atmospheric pressure,
A first multifunctional air chamber door 14 that can enter and exit the multifunctional air chamber 9 through the work chamber slab 2 with the excavator 5 in a substantially horizontal state, and the multifunctional air The excavator 5 accommodated in the multifunctional air chamber 9 is placed almost horizontally on the entrance 12 dedicated to the worker in the indoor chamber 9 and the upper slab 3 which is the ceiling of the multifunctional air chamber 9. The second multifunctional air chamber door 17 to be passed and the second multifunctional air chamber door 17 are submerged in the water load planned above the second multifunctional air chamber door 17. It is characterized in that walls 19a and 19b are installed to prevent this.

  Furthermore, the invention described in claim 3 is a large-sized material / equipment loading / unloading device in the pneumatic caisson method according to claim 1 or 2, wherein the first and second multifunctional air chamber doors 14, 17 are respectively It is characterized by being opened and closed by remote operation from outside the multifunctional air chamber 9.

  Furthermore, the method for carrying in / out a large-sized material / equipment in the pneumatic caisson method according to claim 4 uses the large-sized material / equipment loading / unloading device according to any one of claims 1 to 3, wherein the first and second The multifunctional air chamber doors 14 and 17 are alternately opened and closed to carry out and carry in large-sized materials and equipment.

  According to the present invention, the two excavator doors provided above and below the multi-function air chamber can pass through the excavator in a substantially horizontal state, and the excavator that has failed in the work chamber is dismantled. In addition, since it is possible to quickly replace the spare excavator that has been maintained and assembled with the outside of the caisson housing, the time required for resuming excavation can be drastically reduced and the process can be greatly shortened.

  In addition, since large materials and equipment are carried out and carried in by a large multifunctional air chamber door, there is no need to disassemble, disassemble and subdivide the cylinder so that it can pass through a material shaft with an inner diameter of about 1 m. Large machines and large quantities of materials and temporary materials assembled outside the caisson housing can be directly carried into and out of the work room, and in a short time.

  Usually, the material shaft, which is an earth and sand unloading device, is also used as the only loading / unloading path for materials and equipment to the work room. Since the equipment and temporary materials can be directly carried into and out of the working room, the equipment can be carried in and out without deteriorating the work efficiency of carrying out the earth and sand.

  Furthermore, repair, assembly, maintenance, inspection, etc. in a narrow work room or multifunctional air chamber can be performed outside the caisson housing in a place where the environment necessary for such work is prepared. And repair and maintenance can be performed efficiently, and the physical burden on the worker is small and safety can be secured.

  In addition, the space for excavator assembly, disassembly, repair, and daily inspection that can be performed under atmospheric pressure can be performed selectively or simultaneously on the multifunctional air chamber, on the upper slab, and outside the caisson housing, so that work efficiency Can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal front view of a caisson housing for explaining a large-sized material / equipment loading / unloading device according to a first embodiment of the present invention. It is for demonstrating the carrying-in / out method of the large sized materials and equipment which concerns on Example 2 of this invention, and is a longitudinal front view of a caisson housing.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a longitudinal front view of a caisson housing for explaining a large-sized material / equipment loading / unloading apparatus according to a first embodiment of the present invention. In the embodiment shown in FIG. 1, a work chamber slab 2 and an upper slab 3 on the upper part of the caisson housing 1 are constructed at predetermined intervals in the vertical direction. Below the work chamber slab 2, a work chamber 4 surrounded by the inner surface of the blade edge 1 a formed at the lower portion of the caisson housing 1 and the lower surface of the work chamber slab 2 is formed.

  A traveling rail for excavator traveling is attached to the ceiling of the working chamber 4, that is, the lower surface of the working chamber slab 2. As is well known, the excavator 5 is suspended on the traveling rail. The moving means in the work chamber 4 for inspection, maintenance, repair, assembly, dismantling, etc. of the excavator 5 is a first moving device (not shown), for example, a traversing device represented by a traversing stand of Patent Document 2. Or a caterpillar type excavator can be loaded on the top surface and loaded and transported on a self-propelled lifter that can be moved up and down.

  Partitions 7 and 8 are formed in the vertical direction between the work chamber slab 2 and the upper slab 3, and are surrounded by the side wall of the caisson housing 1, the work chamber slab 2 and the upper slab 3, and the partition walls 7 and 8. Is formed. By these space portions, a maintenance lock (multifunctional air chamber) 9, an operation chamber 10, and a manlock chamber 11 are formed between the working chamber slab 2 and the upper slab 3.

  These space portions are not necessarily limited to three, and three or more may be provided by increasing the number of partition walls as necessary. Here, the upper slab 3 is constructed in the entire upper part of the working chamber slab 2, but may be constructed in a part of a necessary size.

  Each partition wall 7 and 8 is provided with a passage exclusively for the worker and an openable and closable pressure door 12 and 13 serving as an entrance and exit, respectively, between the maintenance lock 9 and the operation chamber 10, and between the operation chamber 10 and the manlock chamber 11. It is possible to go in and out of each other.

  The maintenance lock 9 has a space where the excavator 5 can be assembled, disassembled, repaired, and checked daily, and can increase and decrease the atmospheric pressure to the atmospheric pressure and the atmospheric pressure in the work chamber 4. The work chamber slab 2 that becomes the floor of the maintenance lock 9 is provided with an opening 2a, and a slide hatch (first multifunctional air chamber door) 14 is provided on the ceiling portion of the work chamber 4 corresponding to the opening 2a. Is provided. As described above, the maintenance lock 9 communicates with the work chamber 4 through the opening 2 a of the work chamber slab 2.

  The opening 2a and the slide hatch 14 can enter and exit the maintenance lock 9 from the work chamber 4 through the work chamber slab 2 in a state where the excavator 5 is substantially horizontal. Here, the level of the excavator 5 means a posture state during excavation work.

  The slide hatch 14 has a structure capable of withstanding the atmospheric pressure in the working chamber 4 and slides in the direction of the arrow A1 in the figure when released. The slide hatch 14 may be a single door or a plurality of doors.

  A lifting device 15 is provided on the ceiling portion of the maintenance lock 9 corresponding to the opening 2a. The lifting device 15 lifts a large material such as the excavator 5 in the work chamber 4 and accommodates it in the maintenance lock 9 or a large material such as the excavator 5 accommodated in the maintenance lock 9. Is used when accommodating the inside of the work chamber 4.

  A second moving device 16 is provided in the maintenance lock 9 on the working chamber slab 2 adjacent to the opening 2a. The second moving device 16 is loaded with a large material such as an excavator 5, and an arrow A2 shown on the rail laid on the work chamber slab 2 adjacent to the opening 2a from the opening 2a. As shown in the figure, the reciprocation is made in the horizontal direction.

  The upper slab 3 that is the ceiling of the maintenance lock 9 is provided with an opening 3a at a position shifted from the opening 2a, and a slide hatch (second second) is formed on the ceiling portion of the maintenance lock 9 corresponding to the opening 3a. A multifunctional air chamber door) 17 is provided. The slide hatch 17 can enter and exit the maintenance lock 9 from the outside of the caisson housing 1 via the upper slab 3 in a state where the excavator 5 is substantially horizontal.

  In the first embodiment, a space where the excavator 5 can be assembled, disassembled, repaired, and checked daily is provided on the upper slab 3.

  The slide hatch 17 has a structure that can withstand the atmospheric pressure in the work chamber 4 similarly to the slide hatch 14 and slides in the direction of the arrow A3 in the drawing. The slide hatch 17 may be a single door or a plurality of doors.

  Further, the two slide hatches 14 and 17 may have the same shape. In this example, the two slide hatches 14 and 17 are not located at the same position in plan view, but may be arranged at the same position. In addition, the case where the multifunctional air chamber door is a slide hatch 14 or 17 has been described as an example, but the opening and closing method is a sliding door type, a hinged door type, or opening and closing like a camera aperture by three or more moving bodies. The method may be used.

  An operator outside the caisson enclosure enters the operation chamber 10 in which the remote operation of opening and closing the two multifunctional air chamber doors 14 and 17 can be performed by the elevator 18 for submergence work. Enter the multi-function chamber 9 and the manlock chamber 11 according to the above procedure.

  A worker enters the work chamber 4 from the saddle hatch 21 through the opening 2b.

  The excavated earth and sand from the excavator 5 in the work chamber 4 is formed in the work chamber slab 2 with a hollow of approximately the same diameter below the cylindrical shape of the material shaft 20 having an inner diameter of about 1 m (not shown). The material is transferred out of the caisson enclosure through the material lock 20a by a dedicated earth and sand bucket.

  It is desirable that the elevator shaft 18a and the material shaft 20 are arranged avoiding the upper side of the slide hatch 17. As a result, since there are no shafts such as the material shaft 20 and the elevator shaft 18a on the slide hatch 17, large machines such as the excavator 5 assembled outside the caisson housing 1 and a large amount of materials and temporary materials are directly used in the work room. 4 can be carried in and out and can be carried out in a short time. At this time, since the main body of the excavator 5 can be carried in and out from the outside of the caisson housing 1 in a state where the main body of the excavator 5 is substantially horizontal, work efficiency can be improved.

  Next, a carrying-in method using the above-mentioned large-sized material and equipment carrying-in / out apparatus will be described with reference to FIG. FIG. 2 is a longitudinal front view of a caisson housing for explaining a method for carrying in / out a large-sized material / equipment according to Embodiment 2 of the present invention.

  In order to disassemble / remove the excavator 5 in the work chamber 4 after inspection / repair or excavation, when recovering to the maintenance lock 9, the excavator 5 to be recovered is removed from the traveling rail and loaded on the first moving device. To do. At this time, the loaded excavator 5 is locked by appropriate known means so that it does not fall from the first moving device. Then, the first moving device is moved below the opening 2a.

  Next, with the slide hatches 14 and 17 closed, the pressure in the maintenance lock 9 is adjusted to substantially the same pressure as that in the work chamber 4, and the slide hatch 14 is opened and the excavator 5 is lifted by the lifting device 15 to maintain the maintenance lock. 9 is accommodated. At this time, the excavator 5 is accommodated in the maintenance lock 9 from the work chamber 4 through the opening 2a of the work chamber slab 2 in a state of being almost horizontal.

  Subsequently, the slide hatch 14 is closed to reduce the pressure in the maintenance lock 9 to atmospheric pressure, and the second moving device 16 is moved below the opening 3a.

  When excavator replacement or large-scale repair is required, the slide hatch 17 is opened and the excavator 5 is carried out of the caisson housing 1 using a crane or the like. 5 is loaded into the maintenance lock 9 through the opening 3a in a state where the excavator 5 is substantially horizontal, and is loaded on the second moving device 16.

  Subsequently, the slide hatch 17 is closed to pressurize the pressure in the maintenance lock 9 to substantially the same pressure as that in the work chamber 4, and the second moving device 16 is moved below the opening 2a. Thereafter, the spare excavator 5 is lifted by the lifting device 15, the second moving device 16 is moved below the opening 3a, the slide hatch 14 is opened, and the spare excavator is opened via the opening 2a. Load on the first mobile device.

  Next, the slide hatch 14 is closed, the spare excavator 5 is transported by the first moving device, the spare excavator 5 is suspended freely on the traveling rail to which the faulty excavator was attached, and excavated. A natural ground G at the bottom of the work chamber 4 is excavated by the bucket 5a.

  On the other hand, in the case of daily inspections or small-scale repairs, the excavator 5 in the work chamber 4 is moved into the maintenance lock 9 according to the above procedure, and then the slide hatch 14 is closed to increase the pressure in the maintenance lock 9. After reducing the pressure to atmospheric pressure and moving the second moving device 16 below the opening 3a, inspection work and repair may be performed in the maintenance lock 9. After the completion of this operation, the second moving device 16 is moved onto the opening 2a and the pressure in the maintenance lock 9 is increased to almost the same as that in the work chamber 4, and then the slide hatch 14 is opened to open the opening 2a. The excavator that has been inspected and repaired is loaded on the first mobile device via

  Thereafter, the slide hatch 14 is closed, the excavator is transported by the first moving device, suspended on the traveling rail to which the excavator before inspection / repair was attached, and the bottom of the work room 4 by the excavation bucket 5a. Excavate the natural ground G.

  Further, vertical partition walls 19 a and 19 b are provided at positions corresponding to the slide hatch 17 of the upper slab 3. The vertical partition walls 19a and 19b function as walls that prevent the slide hatch 17 from being submerged with the planned water load water when the inside of the caisson housing 1 is filled with water 22 and given a water load. Even when the interior of 1 is filled with water 22, large materials and equipment can be carried in and out through the slide hatch 17.

  When the caisson housing 1 is laid down, self-sink is fundamental, but when the ground hardness or peripheral friction increases, it does not self-sink. Therefore, circumferential friction, blade edge resistance, overall weight, and the like are calculated, and when the load is insufficient, water for increasing the load is introduced into the caisson housing 1. Even in such a case, large materials and equipment can be carried in and out via the slide hatch 17.

  In addition, when a space for assembling, disassembling, repairing, and daily inspection of the excavator 5 is provided on the upper slab 3 in the region surrounded by the vertical partition walls 19a and 19b, this space is used as necessary. Repairs and daily inspections can also be performed. (Not shown)

  In this way, the space where the excavator can be assembled, disassembled, repaired and routinely inspected under atmospheric pressure can be selectively or simultaneously inside the maintenance lock 9, on the upper slab 3, and outside the caisson housing 1, Work efficiency can be improved.

  When the caisson housing 1 has been installed, and the excavator 5 is collected and removed, the excavator 5 is removed from the traveling rail and loaded onto the first moving device, as in the excavator repair / replacement operation. It moves below the opening 2a. Then, the slide hatches 14 and 17 are alternately opened and closed and pulled up to the outside of the caisson housing 1 using the lifting device 15 and a crane.

  At this time, the excavator 5 is accommodated in the maintenance lock 9 from the work chamber 4 through the opening 2a of the work chamber slab 2 in a state of being almost horizontal. Further, the excavator 5 is lifted from the maintenance lock 9 between the vertical partition walls 19a and 19b through the slide hatch 17 and the opening 3a in a substantially horizontal state.

  As described above, according to the carry-in / out apparatus for large-sized materials and equipment and the carry-in / out method using this apparatus according to the embodiment of the present invention, the following effects (1) to (8) can be obtained.

(1) Excavator failed in the work chamber by two slide hatches (multifunctional air chamber doors) provided above and below the maintenance lock (multifunctional air chamber) that can pass the excavator in a substantially horizontal state. The time required for resuming excavation can be drastically reduced and drastically shortened because the excavator can be quickly replaced with a spare excavator that has been maintained and assembled with the outside of the caisson enclosure become.

(2) Since work such as repair, assembly, maintenance, and inspection in a narrow and high-pressure working room or maintenance lock can be performed outside the caisson housing in a place where the environment necessary for such work is prepared, the cause of failure is pursued. And repair and maintenance can be performed efficiently.

(3) The large slide hatch (multifunctional air chamber door) eliminates the need to disassemble, disassemble and subdivide the cylinder so that it can pass through a material shaft with an inner diameter of about 1 m. Large machines and large quantities of materials and temporary materials can be directly carried into and out of the work room, and in a short time. Carrying in and out of the caisson enclosure with the excavator being almost horizontal is also possible.

(4) Normally, the material shaft, which is a sediment transport device, is also used as the only transport route for materials and equipment to the work room. However, according to the present invention, the material shaft can be used without reducing the work efficiency of sediment transport. Can be taken in and out.

(5) Space for excavator assembly, disassembly, repair, and daily inspection that can be performed under atmospheric pressure can be performed selectively or simultaneously outside the maintenance lock (multifunctional air chamber), upper slab, and caisson housing. Efficiency is improved.

(6) When using a conventional material shaft that suspends the excavator in a vertical state rotated approximately 90 ° instead of horizontally, the hydraulic oil tank with the air hole for pressure adjustment has a work to drain the hydraulic oil once. Moreover, although it becomes the operation | work which injects hydraulic oil at the time of an assembly, they can be omitted by conveying an excavator in a horizontal state.

(7) In the case of a deep depth, since the equipment passes through a material shaft with an inner diameter of about 1 m, which is several tens of meters long, with a single suspension wire, the equipment is easy to rotate and damage to the equipment and shaft This is resolved.

(8) In the case of a pneumatic caisson having a large depth and a large planar shape, the ground pressure in the working chamber becomes high due to the high groundwater pressure, and the number of excavators arranged in the working chamber is large. The use of the invention under field conditions where the risk of decompression sickness is higher and a large number of excavator inspections and repairs are required is the work for inspection and repair of excavators under atmospheric pressure. The problem described at the beginning can be solved by quickly moving the excavator to a place and providing a large number of work places at low cost.

  Therefore, in the pneumatic caisson method, dismantling and assembling processes of large-sized materials and equipment under high atmospheric pressure and / or caisson housing are not required, and loading / unloading can be facilitated and the construction period can be shortened. In addition, the efficiency of management such as inspection and repair of the excavator can be improved, and the work efficiency and safety can be further improved.

(9) If a worker in a working room under high pressure needs to escape urgently due to an elevator failure or an emergency situation, a large number of workers can be shortened from two large slide hatches (multifunctional air chamber doors). It is possible to leave (evacuate) in time.

(10) When a worker in the working room is placed in a standing or sitting position and suffers a life-threatening injury or illness, lay down from the large sliding hatch (multifunctional air chamber door) throughout the caisson body. It can be transported and rescued.

  In addition, this invention is not limited to embodiment mentioned above, Of course, it can implement variously in the range which does not deviate from a summary.

DESCRIPTION OF SYMBOLS 1 Caisson housing 1a Blade 2 Work chamber slab 2a, 2b Opening part 3 Upper slab 3a Opening part 4 Work room 5 Excavator 5a Bucket 7, 8 Bulkhead 9 Maintenance lock (multifunctional air chamber)
G Ground mountain 10 Operation room 11 Manlock room 12, 13 Pressure door (entrance / exit)
14 Slide hatch (first multifunctional air chamber door)
15 Lifting device 16 Second moving device 17 Slide hatch (second multifunctional air chamber door)
18 Elevator 18a Elevator shaft 19a, 19b Vertical partition 20 Material shaft 20a Material lock 21 Vertical hatch 22 Water

Claims (4)

In the caisson housing (1), a work chamber slab (2) and an upper slab (3) above the work chamber slab (2) are constructed at predetermined intervals in the vertical direction, and a work room (4 ), And a space between the work room slab (2) and the upper slab (3) is provided for assembling, dismantling, repairing and daily inspection of the excavator (5), and the atmospheric pressure inside the work room (4) Forming a multi-function gas chamber (9) that can be pressurized and depressurized to atmospheric pressure and atmospheric pressure,
A first multifunctional air chamber that can enter and exit the multifunctional air chamber (9) from the work chamber (4) through the work room slab (2) with the excavator (5) being substantially horizontal. The door (14), the entrance (12) dedicated to the worker into the multifunctional air chamber (9), and the upper slab (3) which is the ceiling of the multifunctional air chamber (9) are multifunctional. A second multifunctional air chamber door (17) that allows the excavator (5) accommodated in the air chamber (9) to pass in a substantially horizontal state;
There is no shaft above the second multifunctional air chamber door (17), and a space for assembling, dismantling, repairing and daily inspection of the excavator (5) should be provided on the upper slab (3). Equipment for loading and unloading large materials in the pneumatic caisson method. In the caisson housing (1), a work chamber slab (2) and an upper slab (3) above the work chamber slab (2) are constructed at predetermined intervals in the vertical direction, and a work room (4 ), And a space between the work room slab (2) and the upper slab (3) is provided for assembling, dismantling, repairing and daily inspection of the excavator (5), and the atmospheric pressure inside the work room (4) Forming a multi-function gas chamber (9) that can be pressurized and depressurized to atmospheric pressure and atmospheric pressure,
A first multifunctional air chamber that can enter and exit the multifunctional air chamber (9) from the work chamber (4) through the work room slab (2) with the excavator (5) being substantially horizontal. The door (14), the entrance (12) dedicated to the worker into the multifunctional air chamber (9), and the upper slab (3) which is the ceiling of the multifunctional air chamber (9) are multifunctional. A second multifunctional air chamber door (17) through which the excavator (5) accommodated in the air chamber (9) passes in a substantially horizontal state, and the second multifunctional air chamber door (17 ) And a wall (19a, 19b) for preventing the second multifunctional air chamber door (17) from being submerged with the planned water load water. Equipment for loading and unloading large materials and equipment in the construction method.   The first and second multifunctional air chamber doors (14, 17) are each opened and closed by remote control from outside the multifunctional air chamber (9). Equipment for loading and unloading large equipment in the pneumatic caisson method. A large-sized material / equipment can be opened and closed alternately using the large-sized material / equipment loading / unloading device according to any one of claims 1 to 3 by opening and closing the first and second multifunctional air chamber doors (14, 17). Of loading and unloading large materials in the pneumatic caisson method, characterized by carrying out and carrying in.

Images