JP2016196729A - Cut-off unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure excellent cut-of height while keeping the height of an operating cut-off part low, by dispensing with construction work for digging down a ground surface and a floor surface by installation on a passage surface and making a casing itself exert a cut-off effect.SOLUTION: A cut-off unit includes: a casing which is installed on a passage surface for a person's passage and vehicle traffic and within which water can be stored; an opening through which water is introduced into the casing and which discharges the water stored within the casing; and a cut-off part which is housed within the casing and which protrudes from a top surface of the casing by rising by obtaining buoyancy from the water stored within the casing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water stop unit that stops water so that water does not flow into a building, underground facility, or the like in the event of a flood due to heavy rain.

  Conventionally, in order to prevent water from flowing into buildings, underground facilities, etc. in the event of a flood due to heavy rain, for example, Japanese Patent Application Laid-Open No. 2000-345537 discloses a trough-shaped water collection pit. A water stop plate with a bulk specific gravity of 1 or less is inserted inside and a primary pit that opens on the same floor is provided near the water collection pit, and the water collection pit and the primary pit are connected by a communication hole. A buoyancy-type floor water stop device is disclosed.

JP 2000-345537 A

  However, in the technique disclosed in Patent Document 1, since the water stop device (water stop unit) is embedded below the ground or the floor surface, the ground or floor surface is dug down in order to install the water stop device. There was a need to do construction. In addition, the height of the water stop plate rising from the ground or floor is lower than the depth dimension of the water collection pit, and a larger water stop device is installed to ensure an effective water stop height. There was a need.

  The present invention has been made in view of the above points, eliminates the need to dig the ground and floor by installing it on the passage surface, and further, by providing a water-stopping effect to the housing itself, It aims at providing the water stop unit which can ensure the outstanding water stop height, suppressing the height dimension of a water stop part low.

The water stop unit of the present invention is
A housing that can be installed on the surface of a passage where people and vehicles pass, and that can store water inside it,
An opening for introducing water into the housing and draining the water stored in the housing;
A water stop portion that is housed in the housing, rises by obtaining buoyancy from water stored in the housing, and protrudes from the upper surface of the housing;
It is characterized by providing.

  According to the water stop unit of the present invention, since the casing is installed on the passage surface, there is no need to excavate the passage surface such as the ground surface or the floor surface, and the construction period can be shortened and the construction cost can be reduced. it can. Moreover, since a housing | casing is mounted in a channel | path surface, the water stopping effect can be acquired even in the housing itself, and the height of the water stopping unit can be suppressed while having an excellent water stopping effect.

A preferred example of the water stop unit of the present invention is:
The opening is provided at a predetermined height from the passage surface;
A drainage unit that drains water stored in the housing and has a smaller opening area than the opening is provided.

  According to a preferred example of the water stop unit of the present invention, the opening is provided with a predetermined height from the passage surface, and further provided with a drain. For this reason, the water which flowed into the inside of the housing is drained from the drainage part, so that surrounding dirt due to the drainage can be prevented, and the appearance is excellent. In addition, since the opening area of a drainage part is comprised smaller than an opening part, while water flows in from an opening part, water is stored in the inside of a housing | casing.

A preferred example of the water stop unit of the present invention is:
The housing is configured in a box shape or a step shape.

  According to a preferred example of the water stop unit of the present invention, since the casing is configured in a box shape or a staircase shape, it can be installed following a stairway such as a subway or an entrance to an underground mall. Moreover, since the level | step difference by a water stop unit continues with stairs, such as an entrance / exit, when it installs in that way, a discomfort at the time of providing a water stop unit can be decreased.

A preferred example of the water stop unit of the present invention is:
At least one of the housings is formed in a slope shape.

  According to a preferred example of the water stop unit of the present invention, since at least one of the casings is formed in a slope shape, it can be installed in a passage through which a bicycle, a wheelchair, or an automobile passes. Moreover, even when there is a step higher than the surroundings at the entrance of a building or the like, the step can be eliminated by the water stop unit.

A preferred example of the water stop unit of the present invention is:
The lower part of the water stop part is widened.

  According to a preferred example of the water stop unit of the present invention, since the lower part of the water stop portion is widened, the water stop portion can obtain stronger buoyancy, compared to the overall height of the water stop portion, The dimension which protrudes from the upper surface of a housing | casing can be made high.

  As described above, according to the water stop unit of the present invention, installation on the passage surface eliminates the need to dig up the ground and floor surface, and the case itself has a water stop effect. Thus, it is possible to secure an excellent water stop height while keeping the height dimension of the water stop portion low.

It is a figure explaining the entrance / exit of the underground facility which installed the water stop unit which concerns on one Embodiment of this invention. It is a longitudinal cross-sectional view of the water stop unit which concerns on one Embodiment of this invention. It is a figure explaining the state which the water stop part rose in the water stop unit of FIG. It is a longitudinal cross-sectional view of the water stop unit which concerns on other embodiment of this invention. It is a longitudinal cross-sectional view of the water stop unit which concerns on further another embodiment of this invention. It is a longitudinal cross-sectional view of the water stop unit which concerns on further another embodiment of this invention.

  Hereinafter, embodiments of a water stop unit of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a diagram illustrating an entrance / exit of an underground facility where a water stop unit 1 according to an embodiment of the present invention is installed, FIG. 2 is a longitudinal sectional view of the water stop unit 1 according to an embodiment of the present invention, and FIG. It is a figure explaining the state which the water stop part 30 rose in the water stop unit 1 of FIG.

  As shown in FIGS. 1 and 2, the water stop unit 1 of the present embodiment is installed in an underground facility such as a subway or an underground mall, or an entrance / exit 50 of a building, and includes a housing 11, an opening 20, The drainage part 21, the water stop part 30, and the guide part 40 are provided. In FIG. 2, the guide part 40 is indicated by a broken line.

  The casing 11 is installed on a passage surface GL through which a person or a vehicle passes by anchor bolts, stays, or the like. In the water stop unit 1 according to the present embodiment, a staircase is formed, and a staircase 51 at an entrance 50 is formed. It is installed following the level difference. Moreover, the housing | casing 11 becomes a structure which can store water in the inside. In addition, in the water stop unit 1 of this embodiment, water is stored in the inside of the housing 11 itself, but the inside of the housing 11 may be partitioned and a water storage tank or the like may be provided separately.

  The opening 20 introduces water into the housing 11 when water overflows the passage surface GL due to flooding due to heavy rain, etc. The first and second steps of the housing 11 are stepped. Among the vertical planes between the eyes, a plurality are provided on the outdoor side.

  The drainage unit 21 drains water introduced into the housing 11, is provided on the bottom surface of the housing 11, and is connected to a sewer pipe (not shown). In addition, the opening area of this drainage part 21 is comprised smaller than the opening area which put together the some opening part 20, and the amount of drainage per time is smaller than the quantity of the water which flows in from the opening part 20. FIG. For this reason, while water flows in from the opening 20, water is stored inside the housing 11, and when the surrounding water level decreases and water stops flowing from the opening 20, The water is gone.

  The water stop unit 30 includes a water stop plate 31, a top plate 33, and a roller 34. The water stop plate 31 is a plate-like member having its wide surface directed in the vertical direction, and buoyancy can be obtained from water by making the inside hollow. Further, the lower part of the water stop plate 31 is widened except for a portion where the roller 34 is provided, and has a substantially inverted T-shaped cross section. The widened portion 32 also has a hollow structure, and buoyancy with respect to water can be obtained also in the portion. The top plate 33 is provided on the upper surface of the water stop plate 31 and is configured to have the same height as the uppermost upper surface 15 of the housing 11 when the water stop plate 31 is lowered. A plurality of rollers 34 are provided at both ends of the water stop plate 31 in the longitudinal direction. When water is stored in the housing 11 or drained after storage, the water stop plate 31 smoothly moves up and down. It is inserted in the guide part 40 so that it may do. In addition, the widened part 32 provided in the lower part of the water stop board 31 is not an essential structure, and the water stop board 31 can also be made into the same cross section in the up-down direction.

  The guide part 40 is provided in the movable range of the water stop part 30 upward from the inside of both ends in the longitudinal direction of the housing 11, and is fixed to the side wall 52 of the entrance / exit 50, and has a substantially transverse cross section of C. It has a letter shape. Then, the water stop portion 30 can be moved up and down along the guide portion 40 by inserting and sliding the roller 34 inside.

  Next, based on the function of each component described above, the operation of the water stop unit 1 of the present embodiment will be described with reference to FIGS. 2 and 3. In FIG. 3, the guide part 40 is indicated by a broken line as in FIG.

  As shown in FIG. 2, there is no water on the passage surface GL during normal times, no water is stored inside the housing 11, and the water stop 30 is lowered by its own weight. The edge of the top plate 33 engages with the upper surface 15 of the housing 11, and the top plate 33 and the upper surface 15 of the housing 11 are at the same height.

  Next, as shown in FIG. 3, when the water W overflows the passage surface GL due to flooding due to torrential rain or the like, and the water surface reaches the opening 20 provided at a predetermined height from the passage surface, the opening 20 Thus, the water W flows into the housing 11 (arrow a1 in the figure). At this time, water is also drained from the drainage part 21 (arrow a2 in the figure), but the amount of water W flowing from the opening 20 is larger than the quantity drained from the drainage part 21 as described above, and the inside of the housing 11 Water W is stored.

  Then, since the inside of the water stop plate 31 is hollow, buoyancy can be obtained from the water W stored in the inside of the housing 11, and the water stopping plate 31 rises along the guide portion 40, and the upper surface of the housing 11. 15 protrudes. And the side wall 52 around the entrance / exit 50 and the water stop part 30 block | close the entrance / exit 50, and the intrusion of the water W to an underground facility etc. is prevented. Moreover, since the lower part of the water stop plate 31 is widened, stronger buoyancy can be obtained, and most of the water stop plate 31 can protrude from the upper surface 15 of the housing 11. Further, when the water W overflowing the passage surface GL does not reach the height of the opening 20, the water W can be blocked by the casing 11 itself.

  Next, when the water on the passage surface GL is drawn, the water does not flow from the opening 20, and the water stored in the housing 11 is drained from the drainage portion 21. And the water stop part 30 also falls according to the fall of the water level inside the housing | casing 11, and will be in the state shown in FIG.

  Next, with reference to FIGS. 4-6, the water stop unit which concerns on other embodiment is demonstrated. FIG. 4 is a view showing the water stop unit 2 having a box-shaped housing, FIG. 5 is a view showing the water stop unit 3 having one of the cases formed in a slope shape, and FIG. It is a figure which shows the water stop unit 4 comprised by the slope shape. In addition, about the component with the same function as the above-mentioned embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As for the water stop unit 2 shown in FIG. 4, the housing | casing 12 has comprised the box shape. For this reason, it is suitable for a place where a water stop unit having a large height cannot be installed. Moreover, the opening part 20 is provided in the substantially same height as the channel | path surface GL, and a drainage part is not provided. For this reason, inflow of water (arrow a3 in the figure) and drainage (arrow a4 in the figure) are performed through the opening 20.

  As for the water stop unit 3 shown in FIG. 5, one side of the housing | casing 13 has a slope shape. For this reason, the level | step difference of entrances, such as a building, can be eliminated, and the channel | path surface GL and the floor surface FL can be connected smoothly. Moreover, the water stop unit 4 shown in FIG. 6 has a slope shape on both sides of the housing 14 and is suitable in a place where a wheelchair, a bicycle, a car, or the like passes. 5 and 6, the opening 20 is provided at substantially the same height as the passage surface GL, does not include a drainage portion, and the inflow and drainage of water is performed through the opening 20.

  As described above, according to the water stop unit according to the above-described embodiment, since the housing is installed on the passage surface, it is not necessary to excavate the passage surface in the installation work, which shortens the construction period and reduces the construction cost. Reduction can be achieved.

  Moreover, since the water can be dammed by the casing itself, the water level to be dammed can be increased together with the water proof part that rises during flooding.

  Moreover, since water is stored inside the housing, the lower part of the water stop plate can be easily widened, the buoyancy of the water stop plate can be made stronger, and it is possible to cope with higher flood water levels. it can.

  Moreover, it can be installed in various places by making at least one of the housings into a slope shape.

  In addition, the above-mentioned water stop unit is an exemplification of the present invention, and the configuration can be appropriately changed without departing from the gist of the invention.

1, 2, 3, 4, .. water stop unit,
11, 12, 13, 14 ... casing, 15 ... top surface,
20 .... opening, 21 ... drainage,
30 .. Water stop part, 31 .. Water stop plate, 32 .. Widened part, 33 .. Top plate, 34 .. Roller,
40. ・ Guidance department,
50 ·· Entrance / exit, 51 ·· Staircase, 52 ·· Side wall,
GL ... Passage, FL ... Floor, W ... Water

Claims (5)

A housing that can be installed on the surface of a passage where people and vehicles pass, and that can store water inside it,
An opening for introducing water into the housing and draining the water stored in the housing;
A water stop portion that is housed in the housing, rises by obtaining buoyancy from water stored in the housing, and protrudes from the upper surface of the housing;
A water-stop unit comprising: The opening is provided at a predetermined height from the passage surface;
The water stop unit according to claim 1, further comprising a drainage unit that drains water stored in the housing and has a smaller opening area than the opening.   The water stop unit according to claim 1 or 2, wherein the casing is configured in a box shape or a step shape.   At least one of the said housing | casing is comprised by the slope shape, The water stop unit of Claim 1 or 2 characterized by the above-mentioned.   The water stop unit according to any one of claims 1 to 4, wherein a lower portion of the water stop portion is widened.

Images