JPS62133216A - Pneumatic caisson with excavator having maintenance chamber under atmospheric pressure - Google Patents

Abstract

PURPOSE:To enable an excavator to be maintained and inspected under atmospheric pressure, by providing the ceiling of the working chamber of a caisson, with the travelling rails for the excavator, and by enabling the excavator to be retreated in a maintenance chamber set on the upper section of the ceiling. CONSTITUTION:On the ceiling 3 of the working chamber 2 of a pneumatic caisson, the travelling rails 5 of an excavator 4 are fixed, and a part of the ceiling 3 is organized with a bearing cover 8 to be vertically moved. When the excavator 4 is required to be maintained and inspected, then the excavator 4 is shifted to the rails 9 at the lower surface of the bearing cover 8, and the bearing cover 8 is lifted up to an excavator maintenance chamber. After that, the excavator 4 is moved from the rails 9 to the rails 10 of the lower surface of a slab 35 in the maintenance chamber, and the bearing cover 8 is moved down to close an opening section 6. As a result, the excavator 4 can be maintained and inspected in the maintenance chamber under atmospheric pressure.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is a method for performing maintenance work such as inspection and repair of an excavator used in a work room of a pneumatic caisson under atmospheric pressure inside the pneumatic caisson. This invention relates to a pneumatic caisson with an excavator having an atmospheric pressure excavator maintenance room.

[Prior art]

Conventionally, as a pneumatic caisson used when constructing foundation structures or other underground structures, as published in Japanese Patent Publication No. 60-499, the ceiling of the work room of the pneumatic caisson is drilled. An excavator in which an excavator running rail that supports and runs the machine is fixed, and an atmospheric pressure capsule for operating the excavator, which has a see-through window and an operation control device, is installed in an opening in the ceiling so that it can be raised and lowered. The pneumatic caissons are known.

In the case of this pneumatic caisson with an excavator, the operator can operate the excavator inside the atmospheric pressure capsule, so there is a greater risk of contracting box disease than when the operator operates the excavator in the pressurized atmosphere of the work room. This has the advantage of being safe and allowing the excavator to operate for long periods of time.

[Problem that the invention seeks to solve]

However, when it becomes necessary to perform maintenance such as inspection or repair of the excavator on the pneumatic caisson with an excavator, the maintenance work must be carried out in the pressurized atmosphere of the work room, which is dangerous due to the risk of contracting the disease. Also, for the health of the workers, it is inappropriate to perform maintenance work in pressurized air for long periods of time.

[Purpose and structure of the invention]

The object of the present invention is to provide a pneumatic caisson with an excavator having an atmospheric pressure excavator maintenance room that can advantageously solve the above-mentioned problems. In the pneumatic caisson with an excavator, in which an excavator running rail 5 for supporting and running an excavator 4 is fixed to the ceiling 6 of the working room 2 in 1, the upper part of the ceiling 6 of the pneumatic caisson 1 includes: An excavator maintenance room 7 having an opening 6 that opens into the work chamber 2 is provided, and a support lid 8 that is moved upwardly from a position where the opening 6 is closed by a lifting device is provided with an excavator maintenance room 7 provided therein. A machine support rail 9 is provided, an excavator receiving rail 10 is attached to the side of the hoistway of the support lid 8 in the excavator maintenance room 7, and an on-off valve 11 is provided in the excavator maintenance room 7. The present invention is a pneumatic caisson with an excavator having an atmospheric pressure excavator maintenance room to which a pressure air release path 12 is connected.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

1 to 11 show a pneumatic caisson with an excavator having an atmospheric pressure excavator maintenance room according to an embodiment of the present invention, and show the lower surface of the ceiling 6 of the working room 2 in the pneumatic caisson 1. , multiple sets of digging rams extending in the front-rear and left-right directions. The turntable 14 is equipped with a turning rail 15 to which the row rail 5 is fixed and which is arranged at the same level as each excavator running rail 5. The running wheels of the general excavator 4, which is rotatably mounted and equipped with a driving device and a brake device for traveling the excavating shovel 15°, are placed on the lower 7 langes of the excavator traveling rail 5, and the excavator 4 can run through the turntable 14 to the excavator running rail 5 at any position.

An excavator maintenance room 7 having an opening 6 opening into the working chamber 2 is provided above the ceiling 3 of the pneumatic caisson 1, and a groove provided on the side of a support lid 8 for opening and closing the opening 6 is provided. A sealing rubber tube 16 is fitted into the
The rubber tube 16 is connected to a compressed air supply/exhaust device 17 provided at the top of the support lid 8, and a large number of horizontally cylindrical holding members 18 fixed to the upper part around the support lid 8 are provided for insertion and removal. A locking member 20 that is moved forward and backward by the air cylinder 19 is fitted, and a receiving fitting 21 into which the locking member 20 is fitted is fixed to the lower part of the excavator maintenance room 7, and is inserted into and removed from the holding member 18. The locking member 20 moved by the air cylinder 19 and the receiving fitting 21 constitute a locking device for fixing the support lid 8.

A pair of excavator support rails 9 arranged to connect the excavator running rails 5 on both the left and right sides of the opening B
A plurality of connecting members 22 are constructed and fixed over the upper part of the support lid 8, and a traversing rail 26 is fixed to the lower surface of the support lid 8, extending in the horizontal direction perpendicular to the excavator support rail 9 at the upper part of each connecting member 22. A plurality of rollers 24 are attached to both sides of each connecting member 22 in the longitudinal direction to be placed on the lower 7 lunges of the traversing rail 26, and a plurality of rollers 24 are attached to the lower part of the support lid 8 in parallel with the traversing rail 26. The connecting member 54, to which the cylinders of the plurality of extending traversing air cylinders 25 are fixed, and which includes a plurality of protrusions 52, 55 arranged at intervals in the longitudinal direction of the traversing air cylinders, is attached to each excavator support rail. It is constructed and fixed across the upper part of 9.

A clamping device 26 is fixed to the air cylinder 25 for traversing, and the clamping device 26 includes a clamp 55 that grips the protrusion 52 and 53;
and an electromagnetic clamp operating device 56 for opening/closing and lifting/lowering operations.

A double-body hoisting machine 28 is fixed to support stands 27 provided on both left and right sides of the upper part of the excavator' maintenance room Z, and each hoisting machine 28
The wire robe 29 let out from the excavator maintenance room 7
The wire lobes 29 are sequentially wound around an upper pulley 60 attached to the upper part of the interior and a support pulley 61 attached to the upper part of the support lid 8, and the ends of the wire lobes 29 are connected to the upper part of the excavator maintenance room 7. The machine 28 constitutes a lifting device. Further, a guide roller 66 is added to the end of the work floor 32 fixed to the upper part of the support lid 8, and the guide roller 66 is attached to a vertical lifting guide knoll 34 fixed to the wall inside the excavator maintenance room 7. engaged.

In the excavator maintenance room 7, a plurality of slabs 65 are provided at intervals in the vertical direction on the side of the hoistway of the support lid 8, and the lower surface of each slab 35 is provided in the same vertical plane as each traverse rail 23. A plurality of excavator receiving rails 10 located at the excavator maintenance room 7 are fixed, and an entrance 36 for carrying in and out of equipment is provided in the upper part of the excavator maintenance room 7, and pressure doors 67 are installed on both sides of the door 67 for opening and closing the entrance 36. The roller 68 is placed on the flange of a support seal 39 fixed to the upper part of the excavator maintenance room Z, and the support fitting fixed to the upper part of the excavator maintenance room Z and the pressure-resistant door 37 are connected to each other by air for opening and closing. cylinder 40
are connected via.

One end of the pressure air release path 12 is open into the excavator maintenance room Z, and the other end of the pressure air release path 12 is placed in the atmosphere.
An electromagnetic on-off valve 11 is connected to the other end, and the work chamber 2 and the excavator maintenance room 7 are connected via a pressure air supply path 42 having an electromagnetic on-off valve 41. A first maintenance room 43 is provided between the lower surface of the excavator maintenance room Z, and a second maintenance room 44 is provided between the upper and lower slabs 65.
is provided.

Each maintenance room 43, 44 is equipped with a monitoring television camera 45, a spare excavator 46 is housed in the second maintenance room 44, and a worker entrance/exit 47 is provided in the upper part of the excavator maintenance room 7.
A pressure-resistant door 48 for opening and closing the door is provided, and ramps 49 for lifting and lowering are provided inside the excavator maintenance room 7 and the worker entrance/exit 47.

In addition, in FIG. 2, 50 is a material shaft, 51
is a remote control room.

When performing maintenance such as inspection or repair on the excavator 4 used in the work room 2, first run the excavator 4 to the excavator support rail 9 and move it as shown in FIGS. 6 and 4. After arranging the entire excavator 4 so that it fits below the opening 6, the electromagnetic on-off valve 41 is opened to make the inside of the excavator maintenance room Z the same pressure as the inside of the work chamber 2. valve 4
Close 1.

Next, after the air in the sealing rubber tube 16 is exhausted and the sealing rubber tube 16 is contracted, the crown member 20 is removed from the receiving fitting 21 by the insertion/extraction air cylinder 19, and then the hoisting machine 28 As shown in FIG. 12, the traverse rail 26 is moved to the excavator receiving rail 1 at the upper part of the first facility room 43 where no excavator is accommodated.
Place it at the same level as 0.

Next, as shown in FIG. 16, the clamp 55 is lowered by the clamp operation device 56, and the protrusion 52 on the side of the first maintenance room 46 is gripped by the clamp 55, and then, as shown in FIG. The excavator support rail 9 and the parts supported by it are moved toward the maintenance room by extending the excavator support rail 9, and then the clamp 55 is released and raised.

Next, as shown in FIG. 15, after shortening the traverse air cylinder 25, the clamp 55 is lowered and
5 to grip the protrusion 56 on the opposite side of the maintenance room, and then, as shown in FIG. It moves toward the back of the first maintenance room 46, opens the clamp 55, and then raises it, and then shortens the traverse air cylinder 25 as shown in FIG. 17.

In this way, by the telescopic operation of the traversing air cylinder 25 and the opening/closing operation of the crank f55, the excavator support rail 9 and the parts supported by it are moved to the maintenance room, and the rollers 24 are moved from the traversing rail 26 to excavate. The excavator 4 to be serviced is moved to the machine receiving rail 10 and transferred to the first maintenance room 4.
Contained within 6.

Next, the hoisting machine 28 is hoisted, and as shown in FIG. , the traversing air cylinder 25 is extended and the protrusion 53 is gripped by the clamp 55, and then the traversing air cylinder 25 is shortened to form the excavator support rail 9 and the excavator support rail 9. Each part is moved in the direction of pulling it out from the second maintenance room 44. Next, after opening the clamp 55 and raising it, the traversing air cylinder 25 is extended, and then the clamp 55 grips the υ protrusion 52, and then the traversing air cylinder 25 is shortened, and the excavator support rail 9 and the preliminary excavator 46 supported thereby
is drawn by the lower trench of the support lid 8, and then the hoisting machine 28 is operated to lower the support lid 8 and the parts supported by it to the lowest position, as shown in FIG. .

Next, the locking member 20 is fitted into the receiving fitting 21 using the insertion/extraction air cylinder 19, and compressed air is supplied into the sealing rubber tube 16 to expand the sealing rubber tube 16. After sealing between the support lid 8 and the pressure-resistant door 4, the opening/closing valve 11 is opened to bring the inside of the excavator maintenance room Z to atmospheric pressure, and then the opening/closing valve 11 is closed.
8 is opened and a worker enters the excavator maintenance room Z through the worker entrance/exit 47 and performs maintenance work such as inspection and repair of the excavator 4.

When carrying out the present invention, any coupling means other than those shown in the drawings may be employed as a separate coupling means between the traversing air cylinder 25 and the excavator support rail 9. The connecting member 22. The rollers 24 are omitted, and the excavator support rail 9 is fixed to the lower part of the support lid 8 in the same direction as the excavator receiving rail 10, and the excavator 4 is fixed to the excavator support rail 9.
Alternatively, the excavator receiving rail 10 may be directly traversed from the excavator receiving rail 10. Further, the number of maintenance rooms in the excavator maintenance room Z may be one, but as in the above embodiment, there may be a plurality of maintenance rooms 4.
3.44 and a pre-maintained spare excavator 46 is stored in either maintenance room, the excavator 4 used in the work room 2 can be stored in the excavator maintenance room 7 for maintenance. At this time, the spare excavator 46 housed in the excavator maintenance room 7 can be immediately moved to the work room 2 and used.

〔Effect of the invention〕

According to this invention, the excavator 4 to be serviced is supported by the excavator support rail 9 at the lower part of the support lid 8, and then the support lid 8 and the part supported by it are moved upwardly by the lifting device. , after moving the excavator 4 laterally and supporting it by the excavator receiving rail 10 in the excavator maintenance room Z, and then lowering the support lid 8 and thereby closing the opening 6,
By opening the on-off valve 11 to bring the inside of the excavator maintenance room Z to atmospheric pressure, maintenance work on the excavator 4 in the excavator maintenance room 7 can be performed under safe atmospheric pressure, and the maintenance work can be completed. After that, the support lid 8 is moved upward, and then the excavator 4 is moved laterally to be supported by the excavator support seal 9, and then the support lid 8 and the parts supported by it are lowered. By doing so, effects such as being able to easily return the maintained excavator to a predetermined position within the work chamber 2 can be obtained.

[Brief explanation of drawings]

1 to 11 show a pneumatic caisson with an excavator having an atmospheric pressure excavator maintenance room according to an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view with some parts omitted. Figure 2 is a bottom view, Figure 6 is a vertical side view showing the structure near the excavator maintenance room, Figure 4 is a vertical front view,
Figure 5 is a vertical front view showing the vicinity of the support lid and excavator support rail, Figure 6 is a vertical front view showing the rubber tube for sealing around the support lid in a contracted state, and Figure 7 is a front view showing the work floor and the surrounding area. A cross-sectional plan view showing the arrangement of the lifting guide part and the lock device between the side wall of the excavator maintenance room, FIG. 8 is a vertical cross-sectional front view showing the lock device in a locked state, and FIG. 9 is a vertical cross-sectional view showing the lock device in the unlocked state. FIG. 10 is a side view showing the traverse movement device of the lower part of the support lid, and FIG. 11 is a perspective view showing the hoisting machine in a rope-wound state. 12th
The figure is a vertical side view showing the state in which the excavator to be serviced has been raised to a position facing the first maintenance room;
Figure 7 is a side view showing the lateral movement of the excavation support rail by the traverse air cylinder #111, and Figure 18 is a longitudinal side view showing the preliminary excavator supported by the excavator support rail at the bottom of the support lid. , FIG. 19 is a longitudinal sectional side view showing a state in which the support lid is lowered to the lowest position and the preliminary excavator is placed in the work chamber. In the figure, 1 is a pneumatic caisson, 2 is a working room, 6 is a ceiling, 4 is an excavator, 5 is an excavator running rail, 6
1 is an opening, 7 is an excavator maintenance room, 8 is a support lid, 9 is a seal for supporting an excavator, 10 is a rail for receiving an excavator, 11 is an on-off valve, 12 is a pressure release path, 16 is a diversion rail, 14 1 is a turntable, 16 is a rubber tube for sealing, 17 is a compressed air supply and discharge device, 19 is an air cylinder for insertion and removal, 20
21 is a locking member, 21 is a receiving metal fitting, 26 is a rail for traversing, 2
4 is a roller, 25 is an air cylinder for traversing, 26 is a clamp device, 28 is a hoisting machine, 29 is a wire rope, 30 is an upper pulley, 61 is a support pulley, 62 is a work floor, 63 is a guide roller, 64 is an elevator 66 is an entrance for loading and unloading equipment, 67 is a pressure-resistant door, 40 is an air cylinder for opening/closing, 41 is an electromagnetic opening/closing valve, 42 is a pressure air supply path, 45 is a first maintenance room, 44 is a second maintenance room , 46 is a preliminary excavator, 47
48 is a pressure door, 52 and 56 are protrusions, 55 is a clamp, and 56 is a clamp operating device. Figure 8

Claims (1)

[Claims] An excavator running rail 5 on which the excavator 4 is supported and runs on the ceiling 3 of the working room 2 in the pneumatic caisson 1.
In the pneumatic caisson with an excavator, the ceiling 6 of the pneumatic caisson 1 is fixed.
An excavator maintenance room 7 having an opening 6 opening into the working chamber 2 is provided at the upper part of the support lid 8, which is moved up and down from a position where the opening 6 is closed by a lifting device. An excavator support rail 9 is provided, and an excavator maintenance room 7
Inside, an excavator receiving rail 10 is attached to the side of the hoistway of the support lid 8, and a pressurized air release path 12 having an on-off valve 11 is connected to the excavator maintenance room 7. A pneumatic caisson with an excavator equipped with an atmospheric excavator maintenance room.