JP3105835B2 - Ventilation vent waterproofing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a rainwater or the like which penetrates into a common groove for underground wiring or piping of a power line, a communication line or a gas pipe or a ventilation opening for ventilation in an underground structure such as an underground passage and a subway. 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 assume that the rainfall per hour 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.

[0005] The present invention has been proposed in view of the above problems, as well as to be able to apply a waterproof measures easily, quickly if there is a risk of flooding the ventilation mouth, multi
Even when a large hydraulic load is applied, the waterproof condition is stable and reliable.
An object of the present invention is to provide a waterproof device for a vent which can be maintained .

[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.

Namely, the ventilation opening in communicating the inside and outside air underground structures, the casing is installed fixed having a vent, its
The valve that opens and closes the vent hole can be rotated via the support arm
And abut on the support arm to rotate the arm.
The roller to be moved up and down by the screw rod
While moving through the link, the movement of the roller
A guide roller and a cam are provided, and the valve is closed when the valve body is closed.
To receive the hydraulic load on the body with the roller and cam
Characterized in that it was.

[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 the drawing, reference numeral 1 denotes a casing formed substantially in a substantially box shape. The casing 1 has a flat rectangular frame-like shape made of H-section steel on a support member 2 having an L-shaped cross section attached to the inner surface of a ventilation port H. 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 vent 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 vent 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 cylindrical body 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 open / close 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 provided with the packing 5 provided at the lower opening of the ventilation hole 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.
Are stopped in a state of riding on the upper surface, when such a large amount of rainwater is accumulated above the valve body 6, the cam 19 receives through the upper Symbol roller 18 and the load, the link 16 is deformed Or the valve body 6 can be prevented from being opened by a hydraulic load.

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. In the present embodiment, the lower end of the screw rod 17 is also formed with a square shaft portion 17b for connecting a tool for rotating 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 ventilating device according to the present invention provides a ventilating port for communicating the inside of an underground structure with the outside air.
H, the casing 1 having the ventilation hole 5 is installed and fixed,
A valve body 6 for opening and closing the ventilation hole 5 is connected via a support arm 7.
The supporting arm 7 is rotatably supported,
Roller 14 for rotating the arm
Moving through the link 16 which moves up and down
The roller 18 for guiding the movement of the roller 14 and the cam 1
And water added to the valve element 6 when the valve element 6 is closed.
The pressure load is applied to the roller 18 and the cam together with the link 16.
Because it was made to be supported by 19, rain in the ventilation opening
If there is a risk that water etc.
When the link 17 is moved upward by rotating the
The roller 14 is moved in a predetermined direction by a roller 18 and a cam 19.
And the valve body 6 rotates together with the support arm 7 and the vent hole
5 is blocked, and waterproof measures should be taken easily and promptly.
Can be. In this state, a hydraulic load is applied to the valve 6.
In the case where the rollers 18 and the cam 1
9, the link 16 or the like is deformed,
There is an effect that the body 6 can be reliably prevented from opening .

[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 the same view of the waterproof device with the valve body opened.

[Explanation of symbols]

 Reference Signs List 1 casing 5 ventilation 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 Continuation of the front page (72) Inventor Shigeki Nishioka 4-22-306, Satte-shi, Saitama (72) Inventor Shigeru Takano 3692-4, Tsuruta-cho, Utsunomiya-shi, Tochigi (56) References (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) E21F 1/10 E21F 1/14

Claims (2)

(57) [Claims] 1. A ventilation port for communicating the inside of an underground structure with the outside air.
A casing with ventilation holes is installed and fixed inside the
A valve that opens and closes pores is rotatably supported via a support arm.
And abuts the support arm to rotate the arm.
The roller that moves up and down by the screw rod
Guide the movement of the above rollers
A roller and a cam are provided, and the valve body is closed when the valve body is closed.
A waterproof device for a ventilation port, wherein the applied hydraulic load is received by the roller and the cam . 2. The waterproof device for a vent according to claim 1, wherein the valve body is connected to and held by the support arm so as to be adjustable in tilt.