JPH0617865Y2 - Pressure caisson - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pneumatic caisson which is an underground structure.

(Prior Art) Caisson is usually made of reinforced concrete above ground,
In addition, it is installed at a predetermined place, and excavates and discharges the earth and sand from the ground while sinking to the predetermined support ground by the weight of the caisson body.

Such caisson is composed of a shape such as a rectangle or a circle, and it is difficult for people to enter the work room at the bottom to perform work. It has been practiced to provide a traveling rail on the ceiling of the vehicle and attach an excavator to the traveling rail so that the excavation can be performed, thereby unmanning the work chamber.

In this case, in order to excavate all over the work room, it is necessary for the operator to grasp the state of the work room through the surveillance camera in the remote operation room on the ground side.

Therefore, conventionally, as shown in FIG. 4, this type of surveillance camera 40 is installed on the ceiling portion 42 of the slab 41 in the working chamber.

(Problems to be solved by the invention) Therefore, when various observations or remote control devices such as the surveillance camera 40 are inspected, replaced, removed, or when there is a need for repairs due to a failure, The worker must enter the work chamber 43 under pressure, and in this case, the work chamber 43 is in a pressured state, so that there is a problem that Caisson's disease is likely to occur.

Further, when the inside of the work chamber 43 is under a high pressure, the work cannot be performed for a lot of time, and the work time is short, so that the work efficiency is very poor.

The present invention has been proposed in view of the above, and an object thereof is to perform various observations such as a surveillance camera or to remove a remote control device, to repair a malfunction, or to replace the device in a working room. (EN) It is possible to provide a pressure caisson that does not require the work of a worker, achieves its safety, can achieve almost complete unmanned work, and improves the work efficiency.

(Means for Solving the Problems) A pneumatic caisson of the present invention for achieving the above object is a pneumatic caisson having a working chamber in which a lower part of the slab is a pneumatic part, and the slab is provided with an appropriate number of openings. Each of these appropriate numbers of openings is provided with a storage cylinder having an openable and closable gate that covers the opening and shuts off the air pressure portion and the atmosphere portion. The storage cylinder is a surveillance camera or the like for grasping the situation in the working chamber. A closed cylindrical body for accommodating various observation or remote control equipment, etc., the storage cylinder being removable above the gate, and provided with an elevating device for elevating and lowering the various equipment accommodated therein, and The surveillance camera and the remote control device, which can be swung and adjusted in angle, are provided so as to project downward from the lower surface of the slab.

(Operation) The pneumatic caisson of the present invention having the above-mentioned configuration accommodates various observation or remote control devices such as a surveillance camera in a storage cylinder, and shuts the pressure air part and the atmosphere part with a gate to monitor the surveillance camera etc. Since various observations or remote-controlled devices can be inspected in the atmosphere and there is no constraint on work time, it is safe and work efficiency can be improved. Further, when various observations such as a surveillance camera or the use of a remote control device or the like is used, the storage cylinder blocks the pressure from the pneumatic section, so that the work can be continued without reducing the pressure in the working chamber.

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 1 denotes a slab, which is a shield floor provided below the pneumatic caisson. The lower part of the slab 1 is a pneumatic working chamber 3
It has a high atmospheric pressure and excavates earth and sand. Above the slab 1 is the atmospheric portion 2, which is surrounded by the cylindrical wall (not shown) of the caisson. The slab 1 is provided with an appropriate number of openings 1a ... And is connected to the working chamber 3 of the pressure section and the atmosphere section 2. A lower end of a cylindrical embedded pipe 24 is provided in each of the openings 1a, and the gate portion 2 is provided on a flange 24a at an upper portion of the embedded pipe 24.
5 is screwed on. An openable and closable gate 26 is provided in the gate portion 25, and the pressure in the work chamber 3 is shut off by closing the gate 26. Further, the storage cylinder 5 having a bottomed cylindrical shape is attached to the upper side of the gate portion 25 via a flange 24b. That is, the storage cylinder 5 is a cylindrical body having one end sealed, and the wiring 13 is arranged on the upper part so as to connect the inside and outside of the storage cylinder 5 via the joint portion 27. In addition, the valve 30 and
32 is provided, an exhaust pipe 29 is attached to the valve 30, and an air supply pipe 31 is attached to the valve 32, so that the air pressure of the storage cylinder 5 can be adjusted.

An elevating device 9 having a fixing portion at the upper end is provided inside the storage cylinder 5 along the cylinder, and a part of the lifting device 9 is supported by a support frame 8. The elevating device 9 has a rod 9a that moves up and down by a slide jack, and the tip of the rod 9a is attached to a vertically movable slide rod 7 arranged in parallel with the elevating device 9. Therefore, when the lifting device 9 is operated, the slide rod 7 is moved up and down in the storage cylinder 5 in accordance with the up and down movement of the rod 9a. A mounting frame 10 is provided at the tip of the slide rod 7, and the rotating shaft 11 is installed in the mounting frame 10.
Mounted on the rotary shaft 11 and provided on the extension of the rotary gear 15
And the pinion gear 16 of the motor 17 provided outside the mounting frame 10 mesh with each other, and the turning gear 15 is rotated by the drive of the motor 17.

A suspension frame 18 is fixed to the lower surface of such a turning gear 15, and a shaft 19 is provided at the center of the suspension frame 18,
A rotary gear 21 and a surveillance camera 20 are fixed to the shaft 19. The rotary gear 21 is meshed with the pinion gear 22 of the motor 23 fixed to the suspension frame 18, and the rotation of the motor 23 causes the surveillance camera 20 to rotate about the shaft 19.

The monitoring camera device of the pneumatic caisson having the above-mentioned configuration,
As shown in FIG. 1, it is sent into the working room 3 by the lifting device 9, the direction and angle are adjusted by the motor 17 and the motor 23 to photograph the working room, and the image is transmitted to the outside of the caisson via the wiring 13. To do. Then, the direction and angle of the surveillance camera 20 can be changed by a command signal from a separately provided operation room outside the caisson to take an image of another location.

When mounting, removing, or repairing the surveillance camera 20, the surveillance camera 20 is housed in the storage chamber 6 of the storage cylinder 5 via the slide rod 7 by the elevating device 9 as shown in FIG. , The gate 26 is closed to shut off the pressure working chamber 3 from the atmosphere portion 2, the pressurized air in the storage chamber 6 is discharged from the exhaust pipe 29 via the valve 30, and the work is performed by reducing the pressure to atmospheric pressure. be able to.

After the work is completed, air is supplied from the air supply pipe 31 via the valve 32, the air pressure in the storage chamber 6 is raised to the air pressure in the work chamber 3, the gate 26 is opened, and the monitoring camera 20 is lowered by the elevating device 9. Let

In the first embodiment, the monitoring camera has been described as an example of the observation or remote control device, but this is an observation device such as a thermometer, a hygrometer, an oximeter, and a combustible gas detector. Alternatively, it may be lighting equipment, a manipulator, or the like.

Further, although the gate portion 25 is described as a slide jack, a ball valve may be used for this. Although not shown in the figure, when installing / removing / fault repairing various observation or remote control devices such as the surveillance camera 20,
The operation can be performed by removing the lid (not shown) arranged on the storage cylinder 5 above the flange 24b, or
It is possible to work by attaching another lid on the flange and removing the storage cylinder 5 from the gate portion 25.

(Embodiment 2) FIG. 3 shows a second embodiment of the present invention, in which the slab 1 has a push-in pipe 24.
A gate portion 25 is provided above the push-in pipe 24, and a storage cylinder 33 is attached on the gate portion 25. The storage tube 33 has a size capable of storing the surveillance camera 20, and a lid portion 34 is provided on an upper portion of the storage tube 33 via a flange 33a. A rod hole 34a is formed at the center of the lid portion 34, and a jack rod 35a of a lifting device 35 provided on the lid portion 34 is inserted into the rod hole 34a. A surveillance camera 20 having a turning and angle adjusting mechanism is attached to the tip of the jack rod 35a. The wiring 13 to the surveillance camera 20 is performed via the joint portion 27 provided on the lid portion 34, so that the drive signal to each adjustment mechanism and the video signal from the surveillance camera 20 are transmitted to the wiring 13. Has become. Further, the storage cylinder 33 is provided with a valve for operating the exhaust pipe and the air supply pipe separately.

The second embodiment is a pneumatic caisson having the above-described structure, and its operation is the same as that of the first embodiment. When various observations such as surveillance cameras or installation / removal / fault repair of remote control devices are performed, the gate 25 is used. Although not shown, the lid installed on the upper storage cylinder 33 can be removed to perform the work, or the flange 33a can be removed to perform the work.

(Effects of the Invention) As described above, the pneumatic caisson of the present invention is a pneumatic caisson having a working chamber in which the lower part of the slab serves as a pneumatic part, and the slab is provided with an appropriate number of openings, and the appropriate number of openings is provided. Each of the parts is provided with a storage cylinder having an openable and closable gate that covers the opening and shuts off the air pressure part and the atmospheric part, and this storage cylinder is used for various observations such as monitoring cameras for grasping the situation in the working chamber. A closed cylindrical body for accommodating remote-controlled equipment, etc., which is removable above the gate, and is provided with an elevating device for elevating and lowering various equipment accommodated inside, and is capable of swiveling and angle adjustment Said surveillance camera,
Since the remote control device is configured so as to be able to project downward from the bottom surface of the slab, workers work on the atmospheric pressure side during various observations such as surveillance cameras, or when repairing, removing, or replacing remote control devices. As a result, the safety of the worker is protected, the caisson's disease does not occur, the work efficiency is good, and the work chamber can be made unmanned.

In addition, various observations such as surveillance cameras or remote control equipment can be installed on the atmospheric pressure side, so the surveillance cameras can be removed even under high pressure when placing floor-filled concrete in the work room during the final settlement. It has the effect of being targeted.

[Brief description of drawings]

1 and 2 show a first embodiment of the present invention. FIG. 1 is a partial sectional view of a surveillance camera device of a pneumatic caisson, FIG. 2 is a partial sectional view showing a retracted state of the surveillance camera, FIG. 3 is a partial cross-sectional view of a surveillance camera device for a pneumatic caisson according to a second embodiment of the present invention, and FIG. 4 is a conventional example. 1 …… Slab 2 …… Atmosphere part 3 …… Pneumatic part (work room) 5.33 …… Housing cylinder 9 ・ 35 …… Elevator 20 …… Monitor camera 26 …… Gate

Claims (1)

[Scope of utility model registration request] 1. A compressed air caisson having a working chamber in which a compressed air portion is located below the slab. The slab is provided with an appropriate number of openings, and each of the appropriate number of openings is covered with a compressed air portion and an atmosphere portion. A storage cylinder having an openable and closable gate for shutting off is provided, and the storage cylinder is a closed cylinder for accommodating various observation or remote control devices such as a monitoring camera for grasping the situation in the working chamber. This storage cylinder is detachable above the gate, and is provided with an elevating device for elevating and lowering various devices housed inside, and the monitoring camera and the remote control device, which can be swung and adjusted in angle, are installed from the bottom surface of the slab. A pneumatic caisson characterized by being provided so as to project downward.