JP3532462B2 - Buoyancy floor water stop device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a passage on a ground floor or a basement floor of a building, and is applied to an indoor floor surface or installation equipment due to storm surge, heavy rain, etc. The present invention relates to a buoyancy-type floor water stopping device for preventing inundation accidents. 2. Description of the Related Art In order to prevent flooding of the ground floor, underground floors, underpasses, etc., including the first floor of a low ground area during storm surges and torrential downpours, a water stop plate is installed at these entrances. Has been done. Such a water stop board is usually provided at the side of a passage, etc., and it is common to take it out based on rainfall information etc. and fit it into a guide rail, but security personnel who are limited in case of flooding It is extremely difficult and dangerous to install and rotate a large number of water stoppages in a short time. In view of this, there have been proposed a large number of water stop devices that enable the water stop plate to be installed by power such as electricity and that stop water by detecting a water level by a sensor or a centralized command from a monitoring room.
However, these are useless if there is a power outage near the flood in the event of an inundation accident, and there is a risk that it will be too late to issue a command due to unmanned operation, and the equipment cost is enormous. It has been proposed to solve such a problem and to automatically float a water stoppage plate by utilizing buoyancy generated by water without requiring power, manpower, or human operation particularly at the time of flooding. Have been. JP-A-7-1977 as an example
The tide device described in Japanese Patent Publication No. 51 will be briefly described with reference to the drawings. FIG. 4 is a cross-sectional view showing the tide preventing device, wherein F is a floor surface, 1A is an underground pit buried under the floor surface F, 2A is a float disposed in the underground pit 1A, and 2 is a float 2A. Water stop board (tide board) attached to the upper surface, 14 is a water stop board 2
Guide rails provided on both sides to raise and lower the
Is a drain pipe connected to the bottom of the underground pit 1A, 11 is an opening provided on the floor which is the ceiling of the underground pit 1A, 4 is a grating (lattice) fitted into the opening 11, 41 is It is a rain shield plate provided to cover the upper part of the grating 4. If water flows over the floor F due to high tide or heavy rain, water enters the underground pit 1A from the opening 11 and floats the float 2A, so that the water stoppage attached to the upper surface of the float 2A Since the plate 2 rises along the guide rails 14 and forms a water blocking wall higher than the floor F, even if the water rises to the level of the upper side (HWL in the figure) of the water stopping plate 2, No water enters the interior of the building. [0005] When the water is stopped and the water in the underground pit 1A naturally flows out of the drain pipe 15 or is drained by a drain pump (not shown), the water stop plate 2 descends and automatically returns to a normal state. I do. Next, what is described in JP-A-9-31936 will be described with reference to the drawings. FIG. 5 is a perspective view of the flood control equipment, FIG. 6 is a cross-sectional view of a main part, and the same reference numerals are used for those common to FIG. 4, and 1 is a trough-shaped water collecting pit, and 21 is water stoppage. This is a cover plate on the upper surface of the plate. The water stop plate 2 is formed integrally with a framework of a structural material such as metal and a buoyant material having a large buoyancy such as styrene foam so as to resist water pressure. In this flood protection equipment, as can be easily understood from the drawings, the water stop plate 2 stored in the trough-shaped water collection pit 1 in normal times automatically floats by buoyancy when water comes out to prevent water intrusion. When the water runs out, the water stop plate 2 is automatically stored in the water collecting pit 1. Both of these two examples are characterized in that the water stoppage plate naturally rises due to the water that has entered at the beginning of the water discharge and performs the water stopping action, and the water stoppage plate 2 naturally returns to the normal state when the water runs out. In the flooding in the operation,
It is not necessary to install a water stop plate by manual work, and it has the effect of operating regardless of a power outage accident.However, in the tide device described in Japanese Patent Application Laid-Open No. The construction of the pit is costly, and it is difficult to clean the pit and maintain the float 2A. In the flood control system described in Japanese Patent Application Laid-Open No. 9-31936, the water stoppage plate 2 is stored in the water collecting pit 1 during normal times, so that water that gives buoyancy in the initial stage of flooding enters. It takes a long time to perform the ascent, the ascent is not performed smoothly, and if sediment or dirt accumulates in the water collection pit 1, the water stop plate 2 may not be completely stored even if the water runs out. There is. SUMMARY OF THE INVENTION The present invention automatically floats at the beginning of flooding without power such as electricity or human operation, and has the above problem. It is an object of the present invention to realize a buoyancy type water stoppage which eliminates the problem. According to the present invention, there is provided a water collecting pit having a bulk specific gravity of 1 or less inserted into a trough-shaped water collecting pit buried in a floor of a passage. A primary pit opening on the same floor is provided near the pit, and the water collecting pit and the primary pit are positioned higher than the bottom of the primary pit.
The water blocking plate is connected to the side opposite to the primary pit in the water collecting pit together with the water pressure in a state where the water stopping plate floats, so that the water stopping plate is located below the side of the primary pit side. This is a buoyancy type floor water stop device to which a wedge plate having a wedge-shaped cross section is attached at a position. According to the present invention, the water stoppage plate floats by buoyancy utilizing the intruding water, so that the water stoppage is ensured even in the event of a power outage or in the absence of a managing person. Is done,
In addition, when the water drains, the water stop plate returns to the original position, so that an inexpensive and reliable water stop device is realized. An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a partial horizontal sectional view, and the same reference numerals are used for those common to the conventional ones. A sliding member attached to the water stop plate 2, 13 is a seal member also attached to the water stop plate 2 on the inner surface of the water collecting pit 1, and 22 is a vertical member attached to a side surface of the water stop plate 2. 23 is a wedge plate which is also mounted horizontally below the water stop plate 2 and 5 is a water collection pit 1
Primary pits provided near the pits.
This is a communication hole connecting the next pit 5. That is, this buoyancy type water stopping device is a water stopping device having a bulk specific gravity of 1 or less inside a trough-shaped water collecting pit 1 buried in a floor surface of a passage such as an entrance of a basement, for example, at right angles to a traffic direction. A primary pit 5 opening on the same floor is provided near the water collecting pit 1 with the plate 2 inserted, and the water collecting pit 1 and the primary pit 5 are set at a position higher than the bottom of the primary pit.
It is configured by connecting with the girder communication hole 6. When the primary pit 5 is provided in a passage portion on the floor surface, the upper surface is appropriately covered with a grating 4 or the like to allow passage. Since the water collecting pit 1 is trough-shaped and has a hollow inside, water can easily penetrate as compared with the flood control equipment described in Japanese Patent Application Laid-Open No. 9-31936. When water enters the water collecting pit 1, buoyancy is generated in the water stop plate 2,
The water stop plate 2 rises to form a water stop wall, and performs water stop. When the water is discharged, the buoyancy disappears, so that the water stop plate 2 descends into the gap and returns to the normal state. If the water in the collection pit 1 does not drain naturally, use a drainage pump. The water blocking plate 2 is made of, for example, an aluminum plate and is made of a rectangular parallelepiped box and filled with expanded polystyrene (commonly called expanded polystyrene) to have a bulk specific gravity of 1 or less. It may be formed into a plate or a wooden plate. It is desirable that the communication hole 6 is located not at the bottom of the primary pit 5 but at a position slightly above it. By providing a drain port or the like in the primary pit 5 as appropriate, the water level does not rise to the height of the communication hole 6 during normal rainfall, so that water does not flow into the water collecting pit 1 and the water stop plate 2 rises. I will not. In addition, even if the water current becomes a wave during heavy rain or high tide, the water flows into the water collecting pit 1 after passing through the primary pit 5, and the wave is averaged.
The water stop plate 2 rises more smoothly. In order to smoothly and securely raise and lower the water blocking plate 2, a guide rail 14 is vertically attached to a side wall of the water collecting pit 1 so as to engage with the channel 22 of the water blocking plate 2. Similarly, it is desirable to attach a sliding member 12 such as a ball caster or a door roller that rotates in contact with the side surface of the water blocking plate 2 that rises and falls at an appropriate position on the side wall of the water collecting pit 1. In FIG. 1, the sliding member 12 is shown only on the upper right side. If the water stop plate 2 is tilted or a foreign object gets stuck during the floating operation, there is a possibility that the water stop plate 2 will not rise normally. Therefore, it is necessary to provide a sufficient clearance between the guide rail 14 and the channel member 22. Further, it is also effective to provide a cover at an appropriate place such as the upper surface of the guide rail 14 in order to prevent entry of foreign matter. The installation of the guide rail 14 and the channel 22 is reversed, and the water collecting pit 1
It is needless to say that the channel may be provided on the side wall and the guide rail may be provided on the side surface of the water stop plate 2. The provision of the primary pit 5 in front of the water collection pit 1 allows most of the sediment and suspended matter in the muddy flow to be reduced to 1%.
It stays in the next pit 5 and does not enter the water collecting pit 1, does not hinder the smooth floating of the water stop plate 2, and both pits are easy to clean. Further, by providing a simple strainer such as a punch metal at the portion of the communication hole 6, it is possible to more completely prevent intrusion of dust into the water collecting pit 1. The primary pit 5 does not need to be particularly parallel as long as it is open to the same floor near the water collecting pit 1.
It may be divided into more than parts. It is desirable to provide a stopper for stopping the floating of the water stop plate 2 at an appropriate position. In this embodiment, a wedge plate 23 having a horizontal wedge-shaped cross section is provided at a position below the side surface of the water stop plate 2. The water stop plate 2 is pressed against the side wall of the water collecting pit 1 so as to improve the water stoppage. Although not shown, if an alarm device such as a buzzer or an indicator light that is activated when the water stop plate 2 is at the upper floating limit position is provided, it becomes a signal to stop the traffic, and at the same time, the remote stop operation of the water stop plate is performed. It is convenient because it can be confirmed from. FIG. 1 shows a normal state in which there is no water in the pit. FIG. 3 is a longitudinal sectional view showing a state in which the water stops and the water stop plate 2 floats. Fig. 3 shows a wedge plate
23 is locked to the sliding member 12, the water stop plate 2 is pressed against the opposite side with the water pressure, and the water is stopped by the seal member 13 on the left side of the figure. Even if the water rises to the level (HWL in the figure) on the upper side of the water stop plate 2, water does not enter the inside of the water stop plate 2 and the left side in FIG. Since the present invention is constructed as described above, the equipment cost is small and no special power is required. Therefore, not only the basement and the underground parking lot of a general building, but also the general underpass and the entrance and exit of a subway which are difficult to manage. It is possible to adopt widely. Although the buoyancy-type floor water stoppage device of the present invention operates automatically without any operation as described above, if the inundation is expected in advance due to a heavy rain flood warning, etc. It is possible to intentionally inject water into the water pit 1 and raise the water stop plate 2 in advance. According to the present invention, an inexpensive, unmanned and securely operated water stop device is realized, and an excellent effect of preventing a flood accident is achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a buoyancy type water stop device showing an embodiment of the present invention. FIG. 2 is a partial horizontal cross-sectional view of a buoyancy type water stop device showing an embodiment of the present invention. FIG. 3 is a longitudinal sectional view of a buoyancy type water stop device showing an operation state of the embodiment of the present invention. FIG. 4 is a cross-sectional view of a tide device showing a conventional technique. FIG. 5 is a perspective view of a flood control device showing another conventional technique. FIG. 6 is a sectional view of a main part of a flood control device showing another conventional technique. [Description of Signs] 1 Water collecting pit 1A Underground pit 2 Water stop plate 2A Float 4 Grating 5 Primary pit 6 Communication hole 11 Opening 12 Sliding member 13 Sealing member 14 Guide rail 15 Drain pipe 21 Cover plate 22 Channel member 23 Wedge plate F Floor surface

Continuing on the front page (72) Inventor Yuyasu Otsuka 1-4-25 Koraku, Bunkyo-ku, Tokyo Nikken Engineering Service Co., Ltd. (72) Inventor Hiroshi Isono 30 Sakurada-cho, Kanazawa-shi, Ishikawa Pref. In-company (56) References JP-A-11-2077 (JP, A) JP-A-7-197751 (JP, A) JP-A-61-49013 (JP, A) JP-A-7-24548 (JP, Y2 (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02B 7/20 E02B 7/50 E06B 5/00

Claims (1)

(1) A water blocking plate (2) having a bulk specific gravity of 1 or less inside a trough-shaped water collecting pit (1) embedded in a floor of a passage.
Primary pit opening to the same floor in the vicinity of the water collecting pit is inserted a (1) (5) provided, these water collecting pit (1) the primary pit (5) and the primary pit (5 )of
Connected by a communication hole (6) provided at a position higher than the bottom , with the water stoppage plate (2) floating with the water pressure in the water collection pit (1) on the opposite side to the primary pit (5). A buoyancy type water stop device having a wedge plate (23) having a wedge-shaped cross section attached to a position below a side surface of the water stop plate (2) on the side of the primary pit (5) so as to be pressed against the water stop plate (2).