JPH0723617B2 - Flood prevention shield - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided to prevent rainwater from entering the underground space through a ventilation opening or an entrance of a subway, an underground space for burying electric wires, an underground warehouse, or the like. And a shield device for preventing water infiltration.

[0002]

2. Description of the Related Art The utility value of underground spaces in cities, such as underground rooms, underground warehouses, and underground burial of electric wires, is increasing day by day. It was almost defenseless except that it had a pump for pumping. For this reason, there was no choice but to pile up sandbags to prevent rainwater from entering during flooding. In particular, even though the underground space is actively used in cities, almost no measures have been taken against rainwater invasion, so that particularly if a large amount of rain falls in a short time, there is a risk of serious damage due to flooding. There was

[0003]

SUMMARY OF THE INVENTION The present invention has been made to overcome the above problems, and an object of the present invention is to provide a water infiltration prevention device capable of preventing rainwater from entering the underground space even if heavy rainfall occurs. And

[0004]

DISCLOSURE OF THE INVENTION The present invention is a shielding device for preventing water from being set inside an opening such as a ventilation port which communicates with an underground space, in which a seal packing is attached to a rear surface of an inner edge of an opening frame. At the same time, a bracket is provided so as to project from the side edge of the opening frame, and a bearing is provided at the tip of the bracket to pivotally support the waterproof door on the lower surface, and the expansion and contraction of an actuator that connects the back surface of the waterproof door and the inner wall surface of the ventilation opening. The opening is opened and closed by the waterproof door by an operation, and a sealing material is interposed between the closing surfaces of the waterproof door when the waterproof door is closed, and the waterproof door is watertightly closed by the seal packing and the sealing material. It is characterized by having done.

[0005]

[Operation] When there is a risk of water intrusion, the actuator is actuated to push the waterproof door so that the seal packing and the sealing material provided on the gap between the door and the opening frame and the closing surface of the door are pressed. By raising it and closing it, rainwater can easily be prevented from entering and reliable waterproofing that can withstand water pressure can be achieved.

[0006]

【Example】

Example 1 Hereinafter, an example of the present invention will be described with reference to the drawings. 1 to 3
The grating 2 is detachably fitted into the ventilation opening 1 whose upper end is open to the ground as shown in FIG. 3, and the water infiltration prevention device of the present invention is installed inside (lower side) of this opening.

However, this water infiltration prevention and shielding device is shown in FIG.
As shown in FIG. 3, an opening frame 4 having a rectangular opening 3 is integrally formed on the upper part of the machine frame 5, and a mounting flange 6 is formed on the inner rear surface of the opening frame 4 to form a rubber seal having a circular cross section. The packing 7 is fitted into the collar 6 and arranged so as to surround the opening 3. In the opening frame 4, a bracket 8 is provided so as to project on opposite long side edges of the opening, and a bearing 22 is provided at the tip of the bracket 8. Reference numerals 9 and 9 denote double-door type waterproof doors whose lower surfaces are pivotally supported by the bearings 22 and which are mounted so as to be openable and closable around the support shaft 10. Then, the seal packing 7 is crimped when the waterproof door 9 is closed, so that the seal function is exerted.

The closing surface 11 of the waterproof doors 9, 9 has a sloped cross section as shown in FIG. This is because when the waterproof door 9 is closed, the number of contact surfaces to be closed is increased and the sealing effect is improved. Then, in order to further improve the sealing property at the closing surface 11, the sealing material 12 is coated around the closing surface 11 of the one waterproof door 9. Further, the sealing members 13 are similarly coated around the long sides of the waterproof doors 9, 9 near the long side edges. The seal member 13 is pressed against the side wall when the waterproof door 9 is closed.

On the other hand, a mounting piece 15 is fixed to the inner wall surfaces 14, 14 below the brackets 8, 8, and a pneumatic cylinder 16 as an actuator is pivotally mounted on the mounting piece 15 by a pin 17. The pneumatic cylinder 16 expands and contracts by compressed air from the air compressor 18, and the operating shaft end 19 of the cylinder is pivotally attached to a mounting piece 23 projecting near the center of the rear opening of the waterproof door 9. This is because the opening 3 is opened and closed by the waterproof door 9 by the expansion and contraction operation of the pneumatic cylinder 16. Therefore, when the waterproof door 9 is in the open state, the pneumatic cylinders 16 and 16 are erected in a state of being slightly inclined inward from the vertical. Reference numeral 20 indicates an air control unit that activates the air compressor 18 to operate the pneumatic cylinder 16.

Embodiment 2 FIG. 4 shows a water immersion prevention / shielding device showing another embodiment. In this embodiment, the waterproof door 9 is a single-sided door. The waterproof door 9 is a bracket 21 that is horizontally projected from the inner wall surface 14 when closed.
The front end of the bracket has an edge with an acute cross-section, and is a sloped closing surface 11. Then, the waterproof door 9 is aligned with the closing surface.
Also has a closed surface structure with an inclined surface. Further, the end portion of the waterproof door 9 is covered with the sealing member 12 on the closing surface 11 of the waterproof door. Other configurations are similar to those of the first embodiment.

The water immersion prevention / shielding device thus constructed is
In normal times, the cylinder of the pneumatic cylinder 16 contracts, the waterproof door 9 opens, and the opening 3 is in an open state and functions as the ventilation port 1. When the air control unit 20 activates the air compressor 18 to operate the pneumatic cylinder 16 when there is a risk of water infiltration, the pneumatic cylinder 16 lifts the waterproof door 9, and the waterproof door 9
By press-fitting the seal packing 7 and the seal material 12, the opening 3 can be hermetically sealed.

Of course, it is also possible to attach the water infiltration prevention and shielding device of the present invention to a lateral opening that communicates with the underground space.

[0013]

As described above, in the water infiltration prevention / shielding device of the present invention, the waterproof door is provided with the seal packing stretched on the back surface of the inner edge of the opening frame, and the sealing material is interposed on the closing surface of the waterproof door.
Since the waterproof door can be sealed so that the seal packing and the sealing material are pressure-bonded, there is an excellent effect that rainwater can be prevented from causing serious damage in advance from a ventilation port, a basement entrance, and the like.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing an embodiment of a water immersion prevention / shielding device of the present invention.

2 is a cross-sectional view of FIG.

FIG. 3 is an operation state diagram of FIG.

FIG. 4 is a transverse cross-sectional view showing another embodiment of the water immersion prevention / shielding device of the present invention.

[Explanation of symbols]

 1 Ventilation Port 3 Opening 4 Opening Frame 7 Seal Packing 8 Bracket 9 Waterproof Door 11 Closing Surface 12 Sealing Material 14 Inner Wall Surface 16 Pneumatic Cylinder 22 Bearing

Claims (1)

[Claims] 1. A shield device for preventing water infiltration, which is set inside an opening such as a ventilation port communicating with an underground space, wherein a seal packing is stretched on a rear surface of an inner edge of the opening frame and a side edge of the opening frame. Bracket is projected from the bracket and a bearing is provided at the tip of the bracket to pivotally support the waterproof door on the lower surface, and the opening and closing of the waterproof door is performed by the expansion and contraction operation of the actuator that connects the back surface of the waterproof door and the inner wall surface of the ventilation opening. A water intrusion prevention / shielding device, which is configured to be opened and closed by means of a seal member, and a sealing material is interposed between the sealing surfaces of the waterproof door when closed, so that the waterproof door is watertightly closed by the seal packing and the sealing material.