JPH1130100A - Ventilation vent waterproofing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof device for a ventilation opening which can cut off water easily and rapidly, when there is a fear that rainwater penetrates into a utility tunnel in which electric power cables, communication cables, gas pipes, or the like are laid or a ventilation opening for an underground structure such as an underground passage. SOLUTION: An openable/closable valve body 6 preventing penetration of rainwater or the like is provided at a ventilation opening H connecting the inside of an underground structure and the outside air and an operating member to open/close the valve body 6 is arranged at the nearby position of the ventilation opening H. To put it concretely, the valve body 6 is rotatably supported by a support arm 7 and opened or closed by rollers 14 rotating the arm while contacting the support arm 7, links 16 rotatably supporting the rollers 14, and a screw rod 17 vertically moving the links 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a rainwater or the like which infiltrates a ventilation groove for ventilating an underground structure such as an underground passage or a subway such as an underground passage or a subway such as a power line, a communication line, or a gas tube. Waterproof device to prevent

[0002]

2. Description of the Related Art Conventionally, a ventilation port, which is an air intake for ventilating an underground structure as described above, is usually installed on a sidewalk of a road. Current flood control measures are based on the assumption that the hourly rainfall for both rivers and sewers is up to 50 mm. If the rainfall exceeds this, there is a risk of flooding from the roads and sidewalks and flooding from the ventilation openings. If it is a small-scale flood, it can be drained by the provided drainage device, but it cannot deal with a large-scale flood, and there is a possibility that the facilities on the premises will be greatly damaged.

Therefore, conventionally, a waterproof sheet or gizzard is prepared near the ventilation opening, and when large-scale flooding is expected, the opening of the ventilation opening is covered with a waterproofing sheet, and the surrounding area is pressed with a sandbag to prevent flooding. I have to. Also, in case of flooding inside the premises, waterproof doors are used to prevent flooding of important places.

[0004]

However, the above-mentioned waterproofing treatment with a waterproof sheet or a sandbag is not always sufficient. When the water flow becomes strong or the amount of water increases, the sheet is washed away or torn. May not be performed. In addition, the waterproof door in the premises must be operated by an operator from the entrance and exit, which requires a great deal of time and labor for closing work, and involves the danger of submersion.

The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a waterproof device for a vent which can easily and quickly take a waterproofing measure when there is a possibility of inundation in the vent. Aim.

[0006]

Means for Solving the Problems To achieve the above object, a waterproof device for a vent according to the present invention has the following configuration.

[0007] That is, an openable and closable valve body for preventing infiltration of rainwater or the like is provided in a ventilating opening communicating between the inside of the underground structure and the outside air, and an operating member for opening and closing the valve is provided at the opening of the ventilating opening. It is characterized by being arranged in the vicinity.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on an embodiment shown in the drawings. FIG. 1 shows an example in which a waterproof device according to the present invention is installed at a ventilation opening of a sinus passage such as a common ditch. FIG. 1 is a plan view, FIG. 2 is a vertical front view, and FIG. 3 is a vertical side view.

In FIG. 1, reference numeral 1 denotes a casing which is formed in a substantially box shape as a whole. It is placed and fixed via the cradle 3. The upper surface 1a of the casing 1 is formed to have a size substantially covering the entire upper opening of the ventilation port H, and the periphery of the upper surface 1a and the ventilation port H
A waterproof sealing member 4 having a triangular cross-section
Is affixed. A ventilation hole 5 is provided at the center of the upper surface 1a of the casing 1, and a packing 5a is provided at an opening edge below the ventilation hole 5. On the other hand, the central portion of the lower surface 1b of the casing 1 is widely opened.

Further, a flat valve body 6 for opening and closing the ventilation hole 5 and a support arm 7 for rotatably supporting the valve body 6 are provided below the ventilation hole 5 in the casing 1. Have been. The support arm 7 supports the casing 1 by a support shaft 8.
The valve body 6 is connected to a support arm 7 thereof by a connecting shaft 9 and a bearing member 10 so as to be adjustable in tilt. Reference numeral 11 denotes a screw for adjusting the inclination angle of the valve 6 with respect to the support arm 7.

Below the support arm 7, a pair of right and left rollers 14, 14 for rotating the support arm 7 by contacting the lower surfaces of downwardly bent portions 7a formed on the left and right sides of the support arm 7, respectively. A pair of right and left links 16 and 16 for supporting the both rollers freely through a horizontal shaft 15 and a screw rod 17 for vertically moving the links are provided. Rollers 18 are provided at both ends of the horizontal shaft 15, and a substantially trapezoidal cam 19 with which the rollers 18 abut is provided on the inner surface of the casing 1. The roller 18 and the cam 19 guide the movement of the roller 14 and can support the load of the valve body 6 when the valve body 6 is closed.

On the other hand, the screw rod 17 is attached to the support bracket 2 integrally fixed to the casing 1 by welding or the like.
The lower ends of the two links 16 are rotatably connected to a female screw member 21 rotatably supported at 0 and screwed to the screw rod 17. Reference numeral 12 denotes a stopper for restricting the upward movement of the female screw member 21. An operating rod 22 is connected to the upper end of the screw rod 17 as an operating member for rotating the rod 17, and the upper part of the operating rod 22 is accommodated and arranged in a cylindrical body 23 attached to the upper surface of the casing 1. On the upper end of the operating rod 22, there is formed a square shaft portion 22a for fitting a turning operation tool (not shown).

In the drawing, reference numeral 22b denotes a spacer for supporting the operating rod 22 concentrically and rotatably in the cylinder 23,
3a is an opening / closing lid provided at the upper end of the cylindrical body 23, 25 is a ventilation port H
A grating made of a grid-like metal band plate or the like disposed at the upper end opening of the opening 25a is provided above the opening / closing lid 23a of the grating 25 as shown in FIG. 25a, and a cover 26 that can be opened and closed to close the opening 25a is provided, and a tool is mounted on the operation rod 22 without removing the grating 25 by opening the cover 26 upward as indicated by a chain line in FIG. It is configured to be able to.

In the above configuration, during normal times, the link 16 is lowered as shown in FIG. 4, and the valve body 6 and its support arm 7 are pivoted downward to open the ventilation hole 5 so that the ventilation hole H Provide ventilation in the sinus. If there is a possibility that rainwater or the like may enter the ventilation port H in this state, the cover 26 and the opening / closing lid 23a are opened, and a turning operation tool (not shown) is inserted into the cylindrical body 23. Is fitted to the square shaft portion 22a at the upper end of the operation rod 22, and the screw rod 17 is rotated in a predetermined direction via the operation rod 22.

Then, the female screw member 21 screwed to the screw rod 17 moves upward, and the link 16 is pushed upward. As a result, the support arm 7 is pushed upward by the roller 14 provided on the upper end side of the link 16, and the support arm 7 and the valve element 6 rotate upward about the support shaft 8, and at the same time, the roller 18 Rise along. By subsequently rotating the operation rod 22, the valve body 6 is moved to the packing 5
Thus, the ventilation hole 5 is closed in close contact with a, and it is possible to prevent rainwater or the like from entering the sinus from the ventilation hole 5.

At this time, the roller 18 is provided with a trapezoidal cam 19.
If a large amount of rainwater or the like accumulates above the valve body 6, the load is received by the link 16 via the roller 14 and the horizontal shaft 15, and the roller Since the cam 19 is received via the, the deformation of the link 16 and the opening of the valve element 6 due to the hydraulic load can be prevented.

Although the operating rod 22 is connected to the upper end of the screw rod 17 as an operating member in the illustrated example, the operating rod may be omitted by extending the screw rod 17 upward. Further, in the present embodiment, a square shaft portion 17b for connecting a tool for rotating the screw rod 17 is also formed at a lower end portion of the screw rod 17, and the above-mentioned tool or the like is installed in the vicinity thereof. By doing so, the valve 6 can be opened and closed even from the inside of the ventilation opening. If necessary, for example, as shown in FIG. 4, an extension rod 27 having a fitting portion 27a with the square shaft portion 17b at the upper end and a square shaft portion 27b similar to the square shaft portion 17b at the lower end is provided. If installed, the valve body 6 can be opened and closed even from a deep position of the ventilation opening. Reference numeral 28 denotes a steadying member for rotatably supporting the extension rod 27.

After taking the above waterproof measures,
If rainwater or the like accumulates above the valve body when the valve body 6 is opened again, a drain pipe or a valve is installed near the valve body so that it can be easily drained. Has been omitted. Further, in the above embodiment, the present invention is applied to a ventilation opening of a sinus passage such as a common ditch, but the present invention is also applicable to a ventilation opening of a basement, an underpass, and other various underground structures.

[0019]

As described above, the ventilator waterproofing device according to the present invention is provided with an openable and closable valve body for preventing infiltration of rainwater or the like at the ventilating hole communicating the inside of the underground structure with the outside air. Since the operating member for opening and closing the body is arranged near the upper end opening of the ventilation port, when there is a risk that rainwater or the like may enter the ventilation port, operate the operation member from outside the ventilation port, for example. By closing the valve, there is an effect that a waterproof measure can be easily and quickly taken.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a ventilating waterproof device according to the present invention.

FIG. 2 is a vertical sectional front view of the waterproof device.

FIG. 3 is an enlarged vertical sectional side view of the waterproof device.

FIG. 4 is a view showing the same state of the waterproof device with a valve body opened;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 5 Vent hole 5a Packing 6 Valve body 7 Support arm 8 Support shaft 14 Roller 15 Horizontal shaft 16 Link 17 Screw rod 18 Roller 19 Cam 22 Operation rod H Ventilation port

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeki Nishioka 4-22-306, Satte City, Saitama Prefecture (72) Inventor Shigeru Takano 3692-4, Tsuruta-cho, Utsunomiya City, Tochigi Prefecture

Claims (3)

[Claims] An opening and closing valve for preventing intrusion of rainwater or the like is provided at a ventilation opening communicating between the inside of an underground structure and the outside air, and an operation member for opening and closing the valve opening is provided at the opening of the ventilation opening. A waterproofing device for a vent, which is arranged in the vicinity. 2. A roller for rotatably supporting the valve element on a support arm, a roller for rotating the arm by contacting the support arm, and a link for rotatably supporting the roller.
The waterproof device for a vent according to claim 1, further comprising a screw rod for moving the link up and down. 3. A roller and a cam for guiding the movement of the roller when the support arm is rotated by the roller, and receiving a hydraulic load applied to the valve element when the valve element is closed. Waterproof device for ventilator.