JP6187973B2 - Water stop device - Google Patents

Description

  The present invention relates to a water stop device installed at an entrance of an underground facility such as a subway or an underground mall.

At the entrance and exit of underground facilities, there are cases where a water stop device is installed to prevent inundation in order to cope with water increase caused by heavy rain or storm surge.
On the other hand, as a countermeasure against river floods and tsunamis, an apparatus that closes the entire entrance / exit of an underground facility with a shutter has been proposed (for example, see Patent Document 1).

  In the device described in Patent Document 1, the waterproof sheet provided on the back surface of the shutter is opposed to the seal member provided on the guide member, and waterproofing is achieved by contacting them.

Japanese Patent No. 4457740

However, since the shutter of Patent Document 1 is basically a structure having a plurality of joints, it is not suitable for waterproofness, and there is also a problem with pressure resistance when a river floods or a tsunami strikes.
In this regard, it is conceivable to stop the water with a single plate material instead of the shutter, but the plate material becomes large, resulting in problems in installation and storage.

  From such a viewpoint, an object of the present invention is to provide a water stop device that is excellent in waterproofness and pressure resistance, and that is excellent in installation property and storage property while avoiding an increase in size.

A water stop device according to the present invention that solves such a problem is a water stop device that seals an entrance / exit of an underground facility, and is a water stop door that is disposed above the entrance / exit and descends during use to seal the entrance / exit. Driving means for lowering at least the water stop door, the water stop door being pivotally supported above the entrance and exit, and a lower door coupled to the lower end of the upper door by a hinge The upper door and the lower door are deployed in a straight line when lowered by the drive means when being folded by the hinge. it is configured to seal the doorway, the said driving means comprises a engagement chain unit pair of chains are engaged, said pair of chains, as well as being stiffened together while facing meshing with each other, Minutes that bite each other Characterized in that it is housed.

  In this invention, since the water stop door is formed by dividing it into the upper door and the lower door without forming a single plate material, an increase in the storage space of the door can be avoided. In addition, when not in use, since it is held above the entrance in a folded state, it is excellent in stowability. Further, since the upper door and the lower door are unfolded in a straight line when viewed from the side, the water stop door is easily adhered to the opening edge of the doorway.

Further, by using the meshing engagement chain unit, for example, an endless wire, chain, compared to the case of obtaining a driving force by using a rope, it is possible to compact the structure and mechanism of the drive means, thus stopping The water device can be downsized.
In addition, since the chain drive system is capable of high-speed operation, the water stop door can be opened and closed quickly. Furthermore, the stiffened portions that mesh with each other in a pair of chains are integrated into a rod shape, so the pressing force is stronger than that of a normal chain type, and the driving force can be obtained with the pressing force, so it is endless. The drive structure can be simplified compared to the case of using wires, chains and ropes. In addition, since the portions that are disengaged in the pair of chains can be bent, there are few restrictions on the layout in the storage space.

A guide rail extending in the vertical direction; and a door wheel provided on a lower end side portion of the lower door and rolling on the guide rail, and the lower part of the guide rail moves toward the inside of the doorway as it approaches the floor surface of the doorway. It is preferable to have a configuration inclined in the direction. In this configuration, the lower end of the lower door is guided toward the inside of the doorway along the lower slope of the guide rail as it descends.
For this reason, a water stop door will be lowered | hung without contacting the side edge part of an entrance / exit, and when it falls to a lower end, it contacts the side edge part of an entrance / exit. Therefore, smooth door closing is realized. As a result, the door and the opening edge can be easily sealed.
In addition, when the water stop door is raised, if the upper door and the lower door are in a straight line, the folding will not be formed well, but the lower door will be pushed out to the front of the entrance due to the inclination, so the inclination will be bent. It functions as an excitement. Thereby, a water stop door is raised smoothly after bending.

  Further, in the above configuration, the door is rotatably supported on a support shaft protruding from the lower door, and a plate extending inwardly of the entrance and exit is attached to the support shaft while the water stop door is sealed at the entrance and exit. The drive means may be connected to the end of the plate in the inner direction. In this configuration, when the end portion in the inner side direction of the plate is pulled upward by the driving means at the time of ascending, the lower door tilts (rotates) with the contact portion between the inclined portion of the guide rail and the door wheel serving as a fulcrum. Thereby, a lower door is pushed out ahead of an entrance, and folding with an upper door and a lower door is formed suitably. Therefore, a smoother rise of the water stop door is realized.

  In addition, a lower packing is provided at the lower end of the lower door to seal the lower end and the floor of the entrance / exit, and one or both of the lower end of the upper door and the upper end of the lower door are arranged at the lower end of the upper door and the upper end of the lower door when deployed. Provide a coupling packing that seals between the two. Furthermore, it is good to provide the side part packing which seals between the left-right edge part of an upper door and a lower door, and the right-and-left opening edge part of an doorway in the left-right side edge part of an entrance / exit. With each of these packings, the entrance / exit can be suitably sealed with a water stop door.

In addition, it is possible to increase the sealing degree of the water stop door with respect to the entrance / exit by providing tightening means for tightening the water stop door toward the opening edge of the entrance / exit at the side edge of the water stop door or the opening edge of the entrance / exit. it can.
Furthermore, even when an external force in the outer direction acts on the water stop door, the water stop door does not flutter with respect to the entrance / exit.

  In addition, since the driving means is driven by the electric motor, the operation at the time of opening and closing becomes easy. Thereby, attention can be paid to safety confirmation at the time of opening and closing, particularly safety confirmation at the time of sealing. In addition, it is possible to quickly cope with an emergency such as a tsunami. Furthermore, it becomes easy to use a water stop door as a nighttime closed door.

  Further, when the drive means is configured to be manually operable by the operation member, the water stop door can be lowered by manual operation even during a power failure. Further, when the operation member is stored in the sleeve wall provided on the side of the entrance / exit, it is possible to quickly cope with an emergency such as a tsunami.

  ADVANTAGE OF THE INVENTION According to this invention, it is excellent in waterproofness and pressure | voltage resistance, and the water stop apparatus excellent in installation property and storage property is obtained, avoiding enlargement.

It is a perspective view which shows the structure for the entrance / exit of a subway provided with the water stop apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the state (state which opened the entrance / exit) where the water stop door was folded and hold | maintained above the entrance / exit. It is a perspective view which shows the state (state which closed the entrance / exit) which the water stop door went down and was expand | deployed. It is a perspective view which shows the frame structure around the entrance / exit. (A) is a front view which shows the state by which the water stop door was hold | maintained above the entrance / exit, (b) is a right view similarly. (A) is a front view which shows the state which the water stop door lowered | hung and expand | deployed, (b) is a right view similarly. It is a right view which shows the guide rail provided in a left pillar material. (A) is a perspective view which shows the side part packing of the packing of a door connection part, and the opening edge part of an entrance / exit, (b) is a horizontal sectional view which shows contact | abutting with a side part packing and a door, (c) is a side part packing. It is a side view which shows contact | abutting with a door. It is a front view which shows the packing of the opening edge part of an entrance / exit. It is a horizontal sectional view showing a tightening means. (A) The front view which shows a fastening means, (b) is a right view which shows a fastening means. It is a figure which shows a meshing chain unit, (a) is a schematic diagram which shows the state by which the chain was wound up, (b) is a schematic diagram which shows the state in the middle of the chain being pulled out. It is an enlarged right side view (partially omitted) showing the configuration of the connecting portion. It is an enlarged front view which shows the structure of a connection part. It is an expanded horizontal sectional view which shows the structure of a connection part. It is a right-side expanded longitudinal cross-sectional view which shows the structure of a tide plate. It is sectional drawing (partially abbreviate | omitted) corresponding to the XVII-XVII line of Fig.6 (a) which shows the positional relationship of a tide plate and a water stop door. It is a figure which shows the state which installed the tide board at the entrance / exit, (a) is a front view, (b) is a right view. (A)-(e) is a right view which shows the operation | movement at the time of a water stop door falling. (A)-(c) is a right view which shows operation | movement of a connection part. It is a partial expanded cross-sectional view which shows a cover member.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted. Moreover, although the following embodiment demonstrates the example which installed the water stop apparatus in the structure for entrances and exits of a subway as an entrance / exit of an underground facility, it is not the meaning which limits the entrance / exit in which a water stop apparatus is installed.
The water-stop device is, for example, an entrance / exit structure for an underground passage or underground shopping street, a building entrance / exit with a basement, a building entrance / exit with a passage leading to a subway or an underground shopping street, an automobile entrance to an underground parking lot, It is also used for bicycle entrances to underground bicycle parking lots.
In the following description, “front and rear, left and right, and top and bottom” are based on the directions shown in FIGS.

  As shown in FIG. 1, the water stop device of the present embodiment includes a water stop door 10 that seals the doorway G of the doorway structure 1, and drive means 20 (see FIG. 2) that drives the waterstop door 10 up and down. The tide board 30 (refer FIG. 2) arrange | positioned inside the water stop door 10 (rear side) is provided. The water stop door 10 can seal the entrance G when a river flood or tsunami strikes, and is connected to the upper door 11 and the lower end of the upper door 11 via a hinge 13 as shown in FIGS. And a door 12. As shown in FIG. 2, the waterproof door 10 is configured to be held above the entrance / exit G in a state of being folded by a hinge 13 and to open the entrance / exit G, as shown in FIG. 2. In use, the water stop door 10 is lowered by the driving means 20 as shown in FIG. 3 so that the upper door 11 and the lower door 12 are unfolded in a straight line so that the doorway G is sealed. Composed.

The tide plate 30 is installed inside the entrance / exit G in a situation where the water level is relatively low, such as when water is increased. The tide plate 30 has a height that allows a person to pass, for example, a height that allows the tide plate 30 to pass across.
In addition, when a river flood or tsunami strikes, the tide plate 30 is installed and the entrance / exit G is sealed by the water stop door 10 to form a double tide prevention facility at the entrance / exit G. Hereinafter, the configuration of each unit will be described in detail.

  First, the frame structure constituting the doorway structure 1 will be described with reference to FIG. As shown in FIG. 4, the framework structure is a structure configured by combining rod-like structural elements that are part of the entrance structure 1 (see FIG. 1, the same applies hereinafter), and surrounds the entrance G. Is arranged. The frame structure is composed of a left column member 1a, a right column member 1b, a large beam member 2, support members 3 and 3, support beam members 4 and 4, connecting beam members 5a and 5b, a beam member 6, and a column. 7 a, 7 b, rear struts 8 a, 8 b, and a small beam material 9. Each structural element is made of a steel or aluminum alloy shape or plate, but may be made of wood.

The left column member 1a is a column member arranged on the left side toward the entrance G, and includes a base 1a1 fixed to the foundation or foundation of the building, and a column main body 1a2 erected on the base 1a1. Yes. The base 1a1 is made of a plate material in which an anchor insertion hole (not shown) is formed. The column main body 1a2 is formed of a cross section having a H-shaped section including a rear flange 1a3, a web 1a4, and a front flange 1a5. The column body 1a2 is fixed to the upper surface of the base 1a1 by welding or the like.
In addition, the small beam materials 9 and 9 are connected to the front surface and rear surface of the upper end part of the left column material 1a. The small beam material 9 is made of a shape exhibiting a groove shape (cross-sectional U shape) (the same applies hereinafter).

As shown in FIGS. 2, 3, and 10, a guide rail 150 is attached to the front surface of the left column member 1 a via a mounting bracket 15 a having a T-shaped cross section. The guide rail 150 guides a door wheel 120 a (see FIG. 3) provided on the left side of the lower end of the lower door 12.
As illustrated in FIG. 3, the guide rail 150 has a U-shaped cross section, and includes a pair of facing pieces 151 and 151 that face each other in the front-rear direction, and a side wall 152 that connects the facing pieces 151 and 151. A door 120a of the lower door 12 is disposed between the facing pieces 151 and 151 so as to be able to roll in the vertical direction. The guide rail 150 has a vertical portion 153 and an inclined portion 154 that extend in the vertical direction.
As shown in FIG. 7, the vertical portion 153 is disposed in front of the pivot fulcrum O1 of the upper door 11 in a side view, and guides the door wheel 120a at a position spaced forward from the front surface of the left pillar 1a. To do.
The inclined portion 154 is provided at the lower portion of the guide rail 150 and is inclined inwardly of the entrance / exit G as it approaches the floor surface GL of the entrance / exit G. The inclined portion 154 extends obliquely downward and downward from the lower end portion of the vertical portion 153, and guides the door wheel 120a (the lower end portion of the lower door 12) toward the front surface of the left column 1a.

As shown in FIG. 2, the right column member 1b is a column member arranged on the right side of the entrance / exit G, and includes a base 1b1 fixed to the foundation or foundation of the building, and a column main body 1b2 erected on the base 1b1. And. The base 1b1 is made of a plate material in which an anchor insertion hole (not shown) is formed. The column main body 1b2 is formed of a cross-sectionally deformed H-shaped member including a rear flange 1b3, a web 1b4, and a front left flange 1b5. The column body 1b2 is fixed to the upper surface of the base 1a1 by welding or the like.
A small beam material 9 is connected to the rear surface of the upper end portion of the right column member 1b.

The guide rail 160 includes an inner guide rail 161a and an outer guide rail 161b.
As shown in FIGS. 2 and 3, the inner guide rail 161a is attached to the front surface of the right column 1b via a plate-shaped bracket portion 16a. As shown in FIG. 15, a plate-like piece 16b extending rightward is attached to the front end of the outer guide rail 161b. The plate-like piece 16b is fixed to the column 7b (see FIG. 4) by welding or the like.
The guide rail 160 guides the door wheel 120b (see FIG. 3) provided on the lower right side surface of the lower door 12.
As illustrated in FIG. 3, the guide rail 160 includes a pair of front and rear facing pieces 161 and 161 corresponding to the facing pieces 1515 and 151 of the left guide rail 150. A longitudinal groove 162 is formed between the opposing pieces 161 and 161. As shown in FIG. 15, the support shaft 121 is inserted into the vertical groove 162. Between the facing pieces 161 and 161, the door wheel 120b of the lower door 12 is disposed so as to be able to roll in the vertical direction. The guide rail 160 has a vertical portion 163 and an inclined portion 164 extending in the vertical direction. The vertical portion 163 corresponds to the vertical portion 153 of the guide rail 150, and the inclined portion 164 corresponds to the inclined portion 154 of the guide rail 150.
That is, as shown in FIG. 5 (b), the vertical portion 163 is disposed in front of the rotation fulcrum O1 of the upper door 11 in a side view, and is separated from the front surface of the right column member 1b to the front. , Guide the door wheel 120b. The inclined portion 164 is provided in the lower part of the guide rail 160 and is inclined inwardly of the entrance / exit G as it approaches the floor surface GL of the entrance / exit G. The inclined portion 164 extends obliquely downward and downward from the lower end portion of the vertical portion 163, and guides the door wheel 120b toward the front surface of the right column member 1b.

  As shown in FIGS. 2 and 4, the large beam member 2 is a beam member arranged above the entrance / exit G, and is installed between the left column member 1 a and the right column member 1 b. The large beam material 2 is made of a material having an H-shaped cross section, and is fixed to the left column material 1a and the right column material 1b by welding or the like. Support members 3 and 3 are erected on the upper part of the large beam member 2 with a space left and right. The support members 3 and 3 are made of a shape having a H-shaped cross section, and are fixed to the large beam material 2 by welding or the like.

As shown in FIG. 4, the support beam members 4 and 4 are beam members that are supported by the support members 3 and 3 and extend in the front-rear direction, and are formed of a shape having an H-shaped cross section. The support beam members 4 and 4 are fixed to the upper ends of the support members 3 and 3 by welding or the like. The front portions of the support beam members 4 and 4 extend forward of the large beam member 2, and the connecting beam member 5 a is fixed to the front end portion thereof by welding or the like. The rear portions of the support beam members 4 and 4 extend rearward from the large beam member 2, and the beam member 6 is fixed to the rear end portion thereof by welding or the like. The connecting beam member 5a and the beam member 6 are formed of a shape having an H-shaped cross section. The right end portion of the connecting beam member 5a is fixed to the upper left side surface of the column 7a by welding or the like.
In addition, a part of the framework of the eaves H (see FIG. 1) described later is configured by the front portions of the support beam members 4 and 4 extending forward from the large beam member 2.

  The support column 7a is a column material arranged on the right front side of the entrance / exit G, and includes a base 7a1 fixed to a foundation or a base of a building, and a column body 7a2 erected on the base 7a1. The base 7a1 is made of a plate material in which an anchor insertion hole (not shown) is formed. The column body 7a2 is made of a shape having a rectangular cross section, and is fixed to the upper surface of the base 7a1 by welding or the like.

  The connecting beam member 5b is a beam member arranged in parallel to the connecting beam member 5a below the connecting beam member 5a, and is formed of a shape member having a groove shape (a U-shaped cross section). The right end portion of the connecting beam member 5b is fixed to the left side surface of the column 7a by welding or the like. A small beam material 9 connected to the front surface of the upper end portion of the left column member 1a is fixed to the rear surface of the left end portion of the connecting beam material 5b by welding or the like.

The support column 7b is a column material that is disposed immediately in front of the right column material 1b, and includes a base 7b1 that is fixed to the foundation or base of the building, and a column body 7b2 that is erected on the base 7b1. Yes. The base 7b1 is made of a plate material in which an anchor insertion hole (not shown) is formed. The column body 7b2 is made of a shape having a rectangular cross section, and is fixed to the upper surface of the base 7b1 by welding or the like. A small beam material 9 is fixed to the front surface of the upper end portion of the column 7b by welding or the like. The front end portion of the small beam material 9 is fixed to the rear surface of the column 7a by welding or the like.
Panel material 1j (refer to Drawing 1) which constitutes a sleeve wall is attached to support columns 7a and 7b.

As shown in FIG. 4, the rear columns 8 a and 8 b include a base 81 (only the right rear column material 8 b is shown) fixed to the waist wall portions 1 c and 1 e and a column main body 82 erected on the base 81. And. The base 81 is made of a plate material in which a bolt insertion hole (not shown) is formed. The column main body 82 is made of a shape having an H-shaped cross section, and is fixed to the upper surface of the base 81 by welding or the like.
A small beam material 9 fixed to the left column 1a is connected to the front surface of the rear column 8a fixed to the waist wall 1c by welding or the like. Further, a small beam material 9 fixed to the right column 1b is connected to the front surface of the rear column 8b fixed to the waist wall 1e by welding or the like.
Further, a beam member 6 is installed between the rear columns 8a and 8b. The beam member 6 is fixed to the opposing surfaces of the rear columns 8a and 8b by welding or the like.
Further, a plurality of rear support columns 8a and 8b on the rear side are erected on the waist wall portions 1c and 1e with a predetermined interval. A beam material (not shown) is fixed between the rear columns 8a and 8b.

In such a frame structure, a bracket 4a (see FIG. 5A) is provided above the support beam members 4 and 4 (and a beam member (not shown) connected between the rear support columns 8a and 8b). The top plate 1h (see FIGS. 1 and 5A) is supported.
Further, panel members 1p (see FIG. 1) having glass surfaces 1g (see FIG. 1) supported by the rear columns 8a and 8b are respectively attached to the waist wall portions 1c, 1d (see FIG. 1) and 1e. .
In addition, the connecting beam members 5a and 5b, the small beam member 9 connected to the connecting beam member 5a, and the small beam member 9 connected to the support column 7a constitute a ridge H (see FIG. 1, the same applies hereinafter). Panel materials 1k (see FIG. 1) to be attached are respectively attached. A storage space S surrounded by these members and the large beam material 2 is formed inside the ridge H. In the storage space S, as shown in FIG. 1, the water stop door 10 in a folded state can be stored. In addition, the lower surface of the eaves H is closed by the lower door 12 of the water stop door 10 in a folded state.

The upper door 11 and the lower door 12 of the water stop door 10 are comprised by the panel material which consists of a member provided with corrosion resistance and weather resistance, such as aluminum alloy. This panel material is configured as a sandwich honeycomb panel including, for example, an aluminum alloy honeycomb core material 10a (see FIG. 16) and sandwiching the core material 10a between aluminum alloy surface materials 10b and 10c. Yes.
In addition, as a panel material, you may utilize the extruded shape part made from an aluminum alloy, and you may comprise with steel materials, a plastic, wood, etc.

  As shown in FIG. 2, the upper door 11 is rotatably supported above the entrance / exit G via support means. The support means includes brackets 14a and 14a fixed to the front surfaces of the support members 3 and 3, respectively, and door brackets 14b and 14b pivotally supported by the brackets 14a and 14a via horizontal support shafts 14c and 14c. And is configured. The door brackets 14b and 14b are attached to the upper end surface of the upper door 11 corresponding to the brackets 14a and 14a. Thereby, the upper door 11 can be rotated around a horizontal axis.

  The lower door 12 is connected to the lower end of the upper door 11 via hinges 13 and 13 and can be folded so as to overlap the upper door 11 via the hinges 13 and 13 (FIGS. 5A and 5B). reference). The lower door 12 is rotatable about the horizontal axis with respect to the upper door 11. The water stop door 10 is stored in the storage space S inside the bag H (see FIG. 1) in a folded state. A door 120 a (see FIG. 3) is provided on the lower left side surface of the lower door 12. The door pulley 120 a is disposed in the guide rail 150 and can roll along the guide rail 150. Moreover, the door 120b (refer FIG. 3) is provided in the lower end right side of the lower door 12. As shown in FIG. The door cart 120 b is disposed in the guide rail 160 and can roll along the guide rail 160.

  As shown in FIG. 8 (a), the lower surface of the upper door 11 and the upper surface of the lower door 12 are opposed to each other with a gap S2 generated by the intervention of the hinge 13 at the time of unfolding. Packing 11a, 12a is attached. The connecting portion packing 11a has a plate shape, and the connecting portion packing 12a has a plate shape with a protruding rib 12b at the rear end. The connecting portion packing 11a and the connecting portion packing 12a approach each other in the process of developing the water blocking door 10, and as shown in FIG. 11 (c), in the fully expanded state, the protruding ribs of the connecting portion packing 12a. 12b adheres to the connecting portion packing 11a with elasticity. Thereby, the clearance gap formed in a connection part is stopped.

  Further, as shown in FIG. 16, a lower packing 12 c is attached to the lower surface of the lower door 12. The lower packing 12c has a plate shape with a protruding rib 12d at the rear end. In the lower packing 12c, the protruding rib 12d is brought into close contact with the floor surface GL of the doorway G in a state where the water blocking door 10 is completely developed. Thereby, the clearance gap between the lower end part of the water stop door 10 (lower end part of the lower door 12) and the floor surface GL is stopped. In addition, the floor surface GL of the entrance / exit G is formed in the flat surface which does not have a groove | channel and a protrusion (refer FIG. 1).

  As shown in FIG. 9, a left side packing 18a, a right side packing 18b, and an upper side packing 18c are attached to the opening edge of the doorway G. The left side packing 18a is attached along the opening edge 1a7 of the front left flange 1a5 of the left column member 1a, and can be in close contact with the inner left edge of the deployed water stop door 10. The right side packing 18b is attached along the opening edge 1b7 of the front left flange 1b5 of the right column member 1b, and can be in close contact with the inner right edge of the deployed water stop door 10. The upper packing 18 c is attached along the opening edge 2 a 7 of the large beam member 2, and can be in close contact with the inner upper edge of the deployed water stop door 10.

Each of these packings has a strip shape. A hollow rib 18d (see FIG. 8B) having a cylindrical cross section is formed at the end in the width direction of the packing. Each hollow rib 18d can be elastically adhered to the left and right side edge portions and the upper side edge portion inside the water blocking door 10 in a deployed state. Thereby, the clearance gap between the right-and-left side edge part and upper side edge part of the water stop door 10, and the opening edge part of the entrance / exit G is stopped.
Each packing is attached to the opening edge by a presser plate 18e and a plurality of bolts 18f for fixing the presser plate 18e (see FIG. 8B).

  As shown in FIG. 6A, a plurality of tightening means 110 are provided at the left and right opening edges of the entrance / exit G. The tightening means 110 serves to tighten the deployed water stop door 10 toward the left and right opening edges of the entrance / exit G. Since the tightening means 110 has the same configuration on the left and right, here, the tightening means 110 provided on the left side of the entrance / exit G will be described as an example with reference to FIG.

As shown in FIG. 10, the tightening means 110 includes a fixed member 111, a fixed shaft 112, a handle 113, and a tightening member 114.
The fixed member 111 is a member that holds the fixed shaft 112, and is fixed to the front facing piece 151 of the guide rail 150 with a bolt 111 a and a nut 111 b. The fixed shaft 112 is a member that is held by the fixed member 111 and extends toward the door side, and is provided so as to be attached to and detached from the fixed member 111. A base portion 113a of the handle 113 is detachably supported on the distal end portion of the fixed shaft 112. The handle 113 can be rotated around the fixed shaft 112 around the base 113a. The tightening member 114 extends to the front side of the door with the base portion 113a interposed therebetween.

In such tightening means 110, only the fixing member 111 is attached in advance to the guide rails 150 and 160, and the fixing shaft 112 and the handle 113 are attached to each fixing member 111 when the water stop door 10 is used. Used. That is, when the water stop door 10 is deployed at the time of use, the fixed shaft 112 is attached to each fixed member 111, the base 113 a is attached to the distal end portion of each fixed shaft 112, and the handle 113 is assembled. The handle 113 is detachable from the base 113a.
In addition, as for the fastening means 110 provided in the right side of the entrance / exit G, the fixing member 111 is fixed to the left side surface (not shown) of the guide rail 160 via a bracket or the like.

  On the other hand, a plate 126 is attached to the front surface of the water stop door 10 so as to face the fastening member 114 (see FIG. 11A). The plate 126 is formed in an L shape in plan view, and has a side portion 126 a that is attached to the left side surface of the water stop door 10 and a front portion 126 b that is disposed on the front left edge of the water stop door 10. As shown in FIG. 11B, the front portion 126b is located on the rotation locus L1 of the distal end portion of the tightening member 114, and the distal end portion of the tightening member 114 that has been rotated can be pressed. is there. Between the front part 126b and the front left edge part of the water stop door 10, the buffer member 126c which consists of members, such as a synthetic rubber, is interposed.

A rectangular plate-shaped regulating member 127 is attached to the left side surface of the water stop door 10 with a bolt 127a. The regulating member 127 extends to the rear of the water stop door 10, and the rear end portion 127 b can come into contact with the front left flange 1 a 5 of the left column member 1 a when the water stop door 10 is deployed. Arrangement of the left side packing 18a with a gap D1 between the inner left edge of the water stop door 10 and the front left flange 1a5 in a state where the rear end portion 127b is in contact with the front surface of the front left flange 1a5. A space is formed. The gap D1 is set to such a size that the hollow rib 18d of the left side packing 18a is in close contact with the inner left edge of the water stop door 10 without being crushed more than necessary.
In the present embodiment, when the handle 113 of the tightening means 110 is operated and the tightening member 114 is brought into contact with the front portion 126b of the plate 126 and tightened, the rear end portion 127b of the restricting member 127 is left column 1a. It is set so as to contact the front left flange 1a5.

Next, the driving means 20 will be described. As shown in FIG. 5A, the drive means 20 includes a meshing chain unit 21 and a power source 22.
The power source 22 is provided with an electric motor that operates upon receiving electric power, and a speed reduction mechanism connected to the output shaft of the electric motor. As shown in FIG. 5A, the output shaft 22 a of the speed reduction mechanism extends toward the meshing chain unit 21 and is connected to a drive sprocket 26 provided in the meshing chain unit 21.

As shown in FIG. 12A, the meshing chain unit 21 includes a pair of chains 25 a and 25 b and a driving sprocket 26.
Each of the pair of chains 25a and 25b includes a hook-shaped inner tooth plate and a hook-shaped outer tooth plate (not shown), and a large number of these are connected by connecting pins in the longitudinal direction of the chain. The pair of chains 25a and 25b are rigidized integrally with each other in a state of being opposed to each other, and are separated from each other and branched to be accommodated in the case 25c of the unit. The rigidized portion 25 that has been stiffened integrally is sent out vertically below the case 25 c, and the tip end 25 e (lower end) is connected to the coupling device 17. Further, the pair of chains 25a and 25b branched off after being bitten are stored in a wound state along the chain storage guides 27a and 27b provided in the case 25c of the unit.
In the present embodiment, the pair of chains 25a and 25b are engaged with each other with a predetermined play, and the stiffening portion 25 is within the play range as schematically shown by a one-dot chain line in FIG. It can be biased in the front-rear direction.
Here, as shown in FIG. 5 (b), the distal end portion 25 e of the rigidized portion 25 is positioned on the extension between the opposing pieces 161 and 161 of the guide rail 160 in the right side view when the water stop door 10 is folded. ing.
Further, as shown in FIG. 6B, the distal end portion 25e of the rigidized portion 25 is detached from between the facing pieces 161 and 161 of the guide rail 160 when viewed from the right side when the water stop door 10 is expanded due to the play. Located behind.
A pressing force is applied to the stiffening portion 25 even after it is completely sent out downward (after the water stop door 10 is lowered). As a result, the play is eliminated, and the rigidized portion 25 is integrated into a tightly engaged state.

The drive sprocket 26 is engaged with the chain at a rigid position (stiffened portion 25) where the pair of chains 25a and 25b are meshed together. The drive sprocket 26 is driven by the power source 22 and drives the rigidized portion 25 in the feed-out direction (downward direction) or the pull-in direction (upward direction).
The drive sprocket 26 is not limited to the one provided at the rigid position, and may be engaged with one chain 25a (or 25b) at a branch portion (branch region) that is disengaged and branched from each other.
Note that the meshing chain unit 21 is provided with a brake (locking device) (not shown) that regulates the feeding of the rigidized portion 25. By having the brake, the water stop door 10 is prevented from descending by its own weight. Further, the brake (locking device) acts to prevent the water stop door 10 from being lowered due to its own weight even during a power failure.
By this brake, the rigidized portion 25 is maintained in a state where the lower end of the water stop door 10 is pressed downward (locked in a state where the pressing force is applied).

  The power source 22 is configured to be manually operable (manually operable) by connecting an operation member (not shown) in an emergency such as loss of power. For example, the operation member can be arranged in a sleeve wall around the entrance / exit G or in the waist wall portions 1c and 1e with a storage portion. The brake is configured to be released when manually operated by the operation member, and the brake lock is applied even if the operation member is accidentally detached or dropped during manual operation. It has a fail-safe structure.

As shown in FIGS. 13 and 14, the connecting device 17 includes a plate 170 fixed to the support shaft 121 of the door wheel 120 b and a connecting body 171 attached to the rear end of the plate 170.
The plate 170 has a horizontally long plate shape, and extends rearward from the lower end portion of the guide rail 160 in a state where the door wheel 120 b is located at the lower end portion of the guide rail 160. The front end portion of the plate 170 is fixed to the right end portion of the support shaft 121 with a bolt 124 (see FIG. 14).
In the present embodiment, as shown in FIG. 13, in the right side view, the center line L11 that is parallel to the front surface of the lower door 12 and passes through the center of the support shaft 121, the center of the support shaft 121, and the center of the rotation shaft 170a The angle θ1 formed by the center line L12 passing through is set to be approximately 90 degrees.

As shown in FIG. 14, a regulating member 125 is attached to the support shaft 121. The restriction member 125 is attached to the right side of the door pulley 120b and restricts the door wheel 120b from moving rightward on the support shaft 121. Thereby, the door cart 120b is hold | maintained between the opposing pieces 161 and 161 of the guide rail 160, as shown in FIG.
The support shaft 121 is supported by a mounting plate 122 fixed to the lower right side surface of the lower door 12 with a bolt 123 and extends rightward.

  As shown in FIG. 13, a rotating shaft 170 a parallel to the support shaft 121 protrudes from the rear end portion of the plate 170. The rotating shaft 170a is inserted and supported by a bearing portion 171b provided at a lower portion of the connecting body 171.

As shown in FIG. 13, the connecting body 171 includes a flat base portion 171a, a connecting member 173 fixed to the upper surface of the base portion 171a, and a bearing portion 171b fixed to the lower surface of the base portion 171a. Configured.
The distal end portion 25e of the rigidized portion 25 is connected to the connector 173 by a mounting bolt 173a. The bearing portion 171b rotatably supports the rotating shaft 170a of the plate 170 via a bearing (not shown) provided inside.

As shown in FIGS. 13 and 14, a bolt hole 171c penetrating the base portion 171a in the vertical direction is formed in the front end portion of the base portion 171a. A bolt 175 is screwed into the bolt hole 171c. The lower end portion of the bolt 175 can contact the upper surface of the plate 170, and the angle between the plate 170 and the connecting body 171 can be adjusted around the rotation shaft 170a by changing the protruding amount of the bolt 175. . In the present embodiment, as shown in FIG. 13, in the right side view, the angle θ2 formed by the center line L12 and the center line L13 that goes straight to the top surface of the base portion 171a and passes through the center of the rotation shaft 170a is substantially equal. It is set to be 90 degrees.
The bolt 175 is provided with a nut 175b for fastening and fixing. By tightening the nut 175b, the protruding amount of the bolt 175 is fixed.

  As shown in FIG. 14, an inspection port 1j1 is formed in the lower part of the sleeve wall. Through the inspection port 1j1, inspection around the inclined portion 164 of the guide rail 160 (inspection of the lowered connecting body 171) is possible.

Next, the tide plate 30 will be described with reference to FIG. The tide plate 30 is made of a panel material made of a member having corrosion resistance and weather resistance such as an aluminum alloy. The panel material includes, for example, an aluminum alloy core material 30a, and the core material 30a is surrounded by an aluminum alloy upper frame material 30b, a lower frame material 30c, a left frame material 30d, and a right frame material 30e. It is configured as a honeycomb panel (sandwich panel). The upper frame member 30b, the lower frame member 30c, the left frame member 30d, and the right frame member 30e (see FIG. 17) are, for example, screwed or welded by arranging joint members (not shown) at four corners on the top, bottom, left and right. It is assembled by. In addition, packing etc. are interposed between each frame material 30b-30e and the core material 30a suitably.
As will be described later, the tide plate 30 is preferably lightweight because it is manually transported and installed. For this reason, the tide plate 30 may be lightweight other than the aluminum alloy honeycomb panel. For example, only the extruded shape made of aluminum alloy is used. It can also be configured by a combination of

  A handle 32 is attached to the upper surface of the upper frame member 30b with a space in the left-right direction (see FIG. 2). A packing 33 is attached to the lower surface of the lower frame member 30c. The packing 33 has a flat plate shape and is in close contact with the floor surface GL with elasticity. A lateral groove 33 a is formed on the lower surface of the packing 33. Using this lateral groove 33a, the packing 33 is fixed to the lower surface of the lower frame member 30c with screws or the like (not shown).

A horizontally long reinforcing member 31 is integrally attached to the front surface of the lower frame member 30c with bolts or the like. The reinforcing member 31 is made of a shape having a groove shape (a U-shaped cross section), and includes an upper portion 31a, a side portion 31b, and a lower portion 31c. The upper portion 31a of the reinforcing member 31 faces the inner side surface (rear surface) of the water blocking door 10 (lower door 12) with a gap S3 therebetween. The front end portion of the lower portion 31c faces the lower packing 12c (protruding rib 12d) of the water blocking door 10 with a gap S3. The gap S3 is set smaller than the amount of bending when the water blocking door 10 is bent by water pressure. That is, when the water stop door 10 is bent by water pressure, the inner surface (rear surface) of the water stop door 10 (lower door 12) contacts the upper portion 31a of the reinforcing member 31, and the lower packing is applied to the lower portion 31c. 12c comes into contact.
As shown in FIGS. 17 and 18A, fixing levers 37a and 37b are provided on the rear surfaces of the left frame member 30d and the right frame member 30e.

As shown in FIG. 17, such a tide plate 30 is installed between the web 1a4 of the left pillar 1a and the web 1b4 of the right pillar 1b (see FIGS. 18 (a) and 18 (b)). It is arranged inside the water door 10. A left support member 35a that supports the left side of the tide plate 30 is attached to the lower right side of the web 1a4, and a right support that supports the right side of the tide plate 30 is attached to the lower left side of the web 1b4. A member 35b is attached.
The left support member 35 a is provided with a flange-like locking projection 36 a that supports the left rear edge portion of the tide plate 30, and the right support member 35 b is provided with a flange shape that supports the right rear edge portion of the tide plate 30. A locking projection 36b is provided. The locking portion of the fixing lever 37a can be locked to the rear surface of the locking projection 36a, and the locking portion of the fixing lever 37b can be locked to the rear surface of the locking projection 36b. is there. The heights of the left support member 35a and the right support member 35b are substantially the same as the height of the tide plate 30.
In addition, the tide board 30 can be accommodated at the time of non-use by forming storage space in the waist wall part 1c, 1e, the inner side of a sleeve wall, etc.

Next, the installation procedure of the tide plate 30 and the water stop door 10 will be described.
First, the tide plate 30 is installed at the entrance / exit G in a situation where the water level is relatively low, such as at the time of water increase. In this case, the tide plate 30 is taken out of the storage space in the sleeve wall or the like, the handles 32 and 32 are gripped, and the tide plate 30 is moved between the webs 1a4 and 1b4 (see FIG. 2).

Then, the left side of the tide plate 30 is applied to the left support member 35a of the web 1a4, and the right side of the tide plate 30 is applied to the right support member 35b of the web 1b4 so as to be along the left support member 35a and the right support member 35b. Then, the tide plate 30 is lowered to the floor GL. Thereafter, the left rear edge of the tide plate 30 is pressed against the locking projection 36a, and the fixing lever 37a is locked to the rear surface of the locking projection 36a. Similarly, the right rear edge of the tide plate 30 is pressed against the locking projection 36b, and the fixing lever 37b is locked to the rear surface of the locking projection 36b.
Thereby, the tide board 30 is installed between web 1a4, 1b4 (refer FIG. 17, FIG. 18). The tide plate 30 is in close contact with the floor GL through the packing 33 due to its own weight.

  Since the tide plate 30 has a height that allows passage of people, even if it is installed at the entrance / exit G, it is possible for people to pass across.

Next, when a river flood or tsunami is expected, the tide plate 30 is installed, the entrance G is sealed with the water stop door 10, and a double door is formed at the entrance G.
After the installation of the tide plate 30 as described above, the water stop door 10 is actuated by the driving means 20 when, for example, the passage of a person is completed. Specifically, an operation switch (not shown) is operated to supply power to the power source 22 and operate the electric motor. When the electric motor is operated, the drive sprocket 26 of the meshing chain unit 21 is driven via the output shaft 22a of the speed reduction mechanism, and the stiffening portion 25 is driven in the delivery direction.

  When the stiffening portion 25 is sent out, the connecting body 171 of the connecting device 17 connected to the tip 25e of the stiffening portion 25 starts to descend, and the bearing portion 171b of the connecting body 171, the rotating shaft 170a, the plate 170, The lower door 12 is lowered through the support shaft 121. Thereby, the upper door 11 and the lower door 12 are gradually developed through the hinge 13 from the folded state of the water stop door 10 shown in FIG. A lower end portion of the lower door 12 is guided down along the guide rails 150 and 160 by door rollers 120a and 120b rolling inside the guide rails 150 and 160.

  Here, as shown in FIG. 19A, in the folded state of the water stop door 10, the rotation shaft 170a of the coupling device 17 is located between the facing pieces 161 and 161 of the guide rail 160 in the right side view, The distal end portion 25e of the rigidized portion 25 is also located on the extension of the same position. However, as shown in FIG. 19 (b), the position of the pivot shaft 170a and the distal end portion 25e of the stiffening portion 25 is biased to a position deviated from the guide rail 160 at the rear as it is deployed. It becomes. This is because the plate 170 is attached to the lower door 12 at an angle θ1 of approximately 90 degrees (see FIG. 13), and the water stop door 10 is developed as shown in FIG. This is because the rotating shaft 170a gradually protrudes rearward from the position. That is, the movement locus of the door wheel 120b and the movement locus of the rotation shaft 170a (the tip 25e of the rigidized portion 25) are always different, and the movement locus of the rotation shaft 170a is more than the movement locus of the door wheel 120b. Located on the back side.

  The stiffening portion 25 is lowered while following this bias by having the above-mentioned play, and as it is lowered (as the water stop door 10 is unfolded), the whole becomes in the front-rear direction. (See FIG. 3).

After that, as shown in FIGS. 19C and 20A, when the door 120b reaches the lower end of the vertical portion 163 of the guide rail 160 in the process of expanding the water stop door 10, FIG. As shown in FIG. 20B, the door wheel 120 b moves from the vertical part 163 to the inclined part 164. Accordingly, the lower end of the lower door 12 is guided in the inner direction of the doorway G by being guided to the door wheel 120 b that moves on the inclined portion 164. Further, since the door cart 120b is guided in the downward direction while moving in the inward direction, the lower door 12 is pulled downward in the process of approaching the doorway G, and the door wheel 120b is pulled to the lower end portion of the inclined portion 164. Will be unfolded in a straight line in a state of moving. That is, the water stop door 10 is in close contact with the entrance / exit G at the same time while being deployed in a straight line in the process of the door 120b moving through the inclined portion 164. Therefore, the water stop door 10 and the opening edge of the entrance / exit G can be easily sealed.
In addition, the inclined portions 154 and 164 of the guide rails 150 and 160 are bent (inclined) in a direction in which the water stop door 10 is pressed against the opening edge of the doorway G, so that the adhesion of the water stop door 10 is enhanced. Excellent water stop effect can be obtained.

  In addition, in the state which the water stop door 10 expand | deployed in the straight line shape, as shown in FIG. 13, the plate 170 is pressed by the side closer to the door pulley 120b rather than the rotating shaft 170a via the volt | bolt 175 of the connection apparatus 170. It will be. Thereby, the pressing force in the downward direction by the stiffening portion 25 is suitably transmitted to the connecting device 17, and the unfolded state of the water stop door 10 is suitably maintained.

  When the water stop door 10 is deployed, a fixed shaft 112 is attached to each fixing member 111 of the tightening means 110, and a base 113a is attached to the tip of each fixed shaft 112, and the handle 113 is assembled. Then, the handle 113 is operated to fasten the fastening member 114 to the plate 126 of the water stop door 10. Thereby, the water stop door 10 is pressed against the left side packing 18a, the right side packing 18b and the upper side packing 18c of the opening edge of the entrance / exit G, and the right and left side edges and the upper edge of the water stop door 10 and the entrance / exit G The gap with the opening edge is stopped. Further, the gap between the lower end of the lower door 12 and the floor surface GL of the doorway G is stopped by the lower packing 12c.

Next, the operation when opening (raising) the water stop door 10 will be described.
When the water stop door is raised, after the fastening by the fastening means 110 is released, an operation switch (not shown) is operated to supply electric power to the power source 22, and the stiffening portion 25 is raised (drawn). Activate the electric motor. When the electric motor is actuated, the driving sprocket 26 of the meshing chain unit 21 is driven via the output shaft 22a of the speed reduction mechanism, and the stiffening portion 25 is driven in the retracted direction.

  Then, the door 120 rises along the inclined portion 164, and the contact portion between the inclined portion of the guide rail 160 and the door 120b serves as a fulcrum, and the lower door 12 tilts (turns). Thereby, the lower door 12 is pushed ahead of the entrance / exit G, and folding with the upper door 11 and the lower door 12 is formed suitably. In other words, the inclination of the inclined portion 164 functions as a kick of the bending of the lower door 12 with respect to the upper door 11, and a smooth rise of the water stop door 10 is realized.

  After the lower door 12 is bent with respect to the upper door 11, as shown in FIG. 19 (b), the lower door 12 is further bent and raised by the pulling drive of the stiffening portion 25, as shown in FIG. 19 (a). Thus, the water stop door 10 is stored in the storage space S of the bag H in a folded state.

  In the case of an emergency such as loss of power, the water stop door 10 is expanded or folded in the same manner as when it is driven by an electric motor using an operation member stored in the sleeve wall around the entrance G, for example. It can be performed.

  According to the present embodiment described above, the water stop door 10 is formed by dividing the upper door 11 and the lower door 12 without forming a single plate material, and thus avoiding an increase in the storage space of the door. it can. And since it is hold | maintained above the entrance / exit G in the folded state at the time of non-use, it is excellent in storage property. In use, the upper door 11 and the lower door 12 develop in a straight line when viewed from the side, so that the water stop door 10 is easily in close contact with the opening edge of the doorway G.

Further, by using the meshing chain unit 21, the structure and mechanism of the driving means 20 can be made compact compared to the case where driving force is obtained using, for example, endless wires, chains, and ropes. The water stop device can be downsized.
Moreover, since it is a chain drive type which can be operated at high speed, the water stop door 10 can be opened and closed quickly. Further, the stiffened portions 25 that are meshed with each other in the pair of chains 25a and 25b are integrated into a rod shape, so that the pressing force is stronger than that of a normal chain type and the driving force is obtained by the pressing force. Therefore, the drive structure can be simplified as compared with the case where endless wires, chains, and ropes are used.
In addition, since the portions that are disengaged in the pair of chains 25a and 25b can be bent, there is little layout limitation in the storage space. Thereby, the meshing chain unit 21 can be reduced in size, and the meshing chain unit 21 can be suitably installed also in the narrow space of the frame structure around the entrance / exit G.

In addition, since the inclined portions 154 and 164 are provided at the lower part of the guide rails 150 and 160, the lower end portion of the lower door 12 moves along the inclination of the lower portion of the guide rails 150 and 160 as the lower part moves. Guided in the direction.
For this reason, the water shut-off door 10 is lowered without contacting the side edges (left side packing 18a, right side packing 18b) of the entrance / exit G, and when it is lowered to the lower end, Touched. Therefore, the smooth closing of the water stop door 10 is realized. Thereby, sealing with the water stop door 10 and an opening edge can be aimed at easily.
Furthermore, when the water stop door 10 is lifted, if the upper door 11 and the lower door 12 are in a straight line, the bend is not formed well, but the lower door 12 is once pushed forward in front of the entrance / exit G due to the inclination. It functions as a flickering crease. Thereby, the water stop door 10 is raised smoothly after bending.

  Further, when the end portion in the inner direction of the plate 170 is pulled upward by the driving means 20 when ascending, the lower door 12 tilts (rotates) with the contact portion between the inclined portion of the guide rail 160 and the door wheel serving as a fulcrum. And since the lower door 12 is extruded ahead of the entrance / exit G, folding with the upper door 11 and the lower door 12 is formed suitably. Therefore, a smoother rise of the water stop door 10 is realized.

Moreover, since the water stop door 10 has the lower packing 12c, the connection part packing 11a, 12a, the left side packing 18a, the right side packing 18b, and the upper side packing 18c, the entrance / exit G can be sealed suitably. . Note that either one of the coupling portion packings 11a and 12a may be provided.
In addition, since the floor surface GL of the entrance / exit G is formed on a flat surface that does not have grooves or protrusions, the adhesion of the lower packing 12c is good and the waterproofing of the water blocking door 10 is excellent. Further, since there are no grooves or protrusions, problems such as tripping and entry of dust do not occur.
In addition, if the water stop door 10 has the height which does not immerse, the upper part packing 18c does not necessarily need to be provided.

Further, since the fastening means 110 is provided at the opening edge of the entrance / exit G, the water stop door 10 can be suitably tightened toward the opening edge of the entrance / exit G. Thereby, the sealing degree of the water stop door 10 with respect to the entrance / exit G can be raised. Further, even when an external force in the outer direction acts on the water stop door 10, the water stop door 10 does not flutter against the doorway G. The tightening means 110 may be provided on the side edge side of the water stop door 10.
Moreover, since the regulating member 127 is attached to the left side surface (right side surface) of the water stop door 10, the hollow rib 18d of the left side packing 18a and the hollow rib 18d of the right side packing 18b are crushed more than necessary. Without stopping, the water stop at the inner left edge and the inner right edge of the water stop door 10 can be suitably maintained.

  Moreover, since the drive means 20 is driven with an electric motor, the operation at the time of opening and closing of the water stop door 10 becomes easy. Thereby, attention can be paid to safety confirmation at the time of opening and closing, particularly safety confirmation when deployed and sealed. In addition, it is possible to quickly cope with an emergency such as a tsunami. Furthermore, it becomes easy to use the water stop door 10 as a nighttime closed door.

  Moreover, since the drive means 20 can be manually operated by the operation member, the water stop door 10 can be lowered by manual operation even during a power failure. Further, when the operation member is housed in the sleeve wall provided on the side of the entrance / exit G, it is possible to quickly cope with an emergency such as a tsunami.

Moreover, since the water stop door 10 is comprised including the honeycomb panel made from an aluminum alloy, the water stop door 10 can be manufactured easily. An aluminum alloy honeycomb panel has high dimensional accuracy and is light in weight.
Moreover, it is also possible to make the watertight door 10 with high rigidity by using an aluminum alloy honeycomb panel. In this case, the opening / closing operation can be performed by providing the driving means 20 on one side of the entrance / exit G.
In addition, since the water-resistant door 10 can be made light and rigid by using an aluminum alloy honeycomb panel, the meshing chain unit 21 (driving means) can be downsized.
The meshing chain unit 21 (driving means) may be provided on both sides of the entrance / exit G. By comprising in this way, the load concerning one place reduces also in the water stop door 10 with a width, and the water stop door 10 with a weight. Thereby, opening and closing can be performed easily. In addition, when providing in both sides, it is good to synchronize a drive with right and left.

In addition, when the water level is relatively low, by installing the tide plate 30 without installing the water stop door 10, it is possible to suitably prevent water from entering while functioning as the human entrance / exit G.
Further, the water stop door 10 and the tide plate 30 can form a double tide prevention facility at the entrance / exit G, and the waterproof performance at the entrance / exit G can be enhanced.

  Moreover, since the clearance S3 between the water stop door 10 and the tide plate 30 is set to be smaller than the amount of bending when the water stop door 10 is bent by water pressure, Deformation can be regulated by the tide plate 30. Thereby, the waterproof performance in the entrance / exit G can be improved.

FIG. 21 shows a water stop device of a modification. In this example, the opening of the guide rails 150 and 160 can be closed with the cover members 70a and 70b when the water stop door 10 is not used.
The cover member 70a is attached to the front left flange 1a5 of the left column member 1a with a bolt 18f, and is provided so as to be swingable about a fulcrum 71a. The cover member 70a is configured to block the opening of the guide rail 150 in a state where it is swung forward. Further, the cover member 70a can be disposed between the water stop door 10 and the tide plate 30 in a state of being swung rearward.
The cover member 70b is attached to the front left flange 1b5 of the right column member 1b with a bolt 18f, and is provided so as to be swingable about a fulcrum 71b. The cover member 70b is configured to block the opening of the guide rail 160 in a state where it is swung forward. Moreover, the cover member 70b can be arrange | positioned between the water stop door 10 and the tide plate 30 in the state swung back.

  In the state where the cover members 70a and 70b close the openings of the guide rails 150 and 160, the rolling of the door wheels 120a and 120b (rolling in the downward direction) is restricted by contacting the cover members 70a and 70b. The cover members 70a and 70b can also be used as members for restricting the descent of the water stop door 10.

  By using such cover members 70a and 70b, it is possible to prevent the openings of the guide rails 1450 and 160 from being exposed to the entrance / exit G when the water stop door 10 is not used.

  In the said embodiment, although the water stop door 10 was stored in the storage space S in the eaves H, it was not restricted to this, and it folded up ahead of the entrance / exit G, without forming the eaves H. You may install the water stop door 10 so that it may be exposed in the state. In this case, the waterproof door 10 itself in the folded state can be used as a bag.

Moreover, although the drive means 20 demonstrated what provided the meshing chain unit 21, it is not restricted to this, The lower end part of the lower door 12 is connected with an endless chain or an endless wire, and it is endless. The water stop door 10 may be configured to move up and down by driving a chain or an endless wire.
Moreover, the water stop door 10 of the present invention can also be used as a shutter for closing the entrance / exit G during normal times.

DESCRIPTION OF SYMBOLS 1 Entrance / exit structure 10 Water stop door 11 Upper door 11a, 12a Connecting part packing 12 Lower door 12c Lower packing 13 Hinge 18a Left side packing 18b Right side packing 18c Upper side packing 20 Driving means 21 Engagement chain unit 25a, 25b Chain 25 Stiffening portion 30 Tide plate 110 Tightening means 120a, 120b Door wheel 121 Support shaft 150, 160 Guide rail 170 Plate G Entrance / exit S3 Gap

Claims (7)

A water stop device that seals the entrance and exit of an underground facility,
A water stop door that is disposed above the doorway and descends during use to seal the doorway; and a drive means that lowers the water stop door at least.
The water stop door is
An upper door rotatably supported above the entrance and exit, and a lower door coupled to the lower end of the upper door by a hinge,
It is designed to be held above the doorway in a state folded by the hinge,
When descending by the drive means, the upper door and the lower door are configured to seal the doorway by developing in a straight line ,
The driving means includes a meshing chain unit in which a pair of chains are meshed,
The pair of chains are stiffened together in a state where they are engaged with each other and opposed to each other, and are separated from each other to be branched and stored. A guide rail extending in the longitudinal direction;
A door wheel provided on a lower end side portion of the lower door and rolling on the guide rail,
2. The water stop device according to claim 1, wherein a lower portion of the guide rail is inclined in an inward direction of the entrance as it approaches the floor surface of the entrance. The door wheel is rotatably supported by a support shaft protruding from the lower door,
The support shaft is attached with a plate extending inwardly of the entrance / exit in a state where the water stop door is sealed at the entrance / exit,
The water stop device according to claim 2 , wherein the driving unit is connected to an end portion of the plate in an inner direction. A lower packing which is provided at the lower end of the lower door and seals the lower end and the floor surface of the doorway;
A connecting portion packing that is provided on one or both of the lower end of the upper door and the upper end of the lower door, and seals between the lower end of the upper door and the upper end of the lower door during deployment;
The side packing provided at the left and right side edge portions of the entrance and exit and sealing between the left and right edge portions of the upper door and the lower door and the left and right opening edge portions of the entrance and exit is provided. The water stop apparatus of any one of Claim 3 . The tightening means for tightening the water stop door toward the opening edge of the doorway is provided at a side edge of the water stop door or an opening edge of the doorway. The water stop device according to any one of 4 . The water stop device according to any one of claims 1 to 5 , wherein the drive means is driven by a drive motor. The drive means can be manually operated by an operation member,
The water stop device according to any one of claims 1 to 6 , wherein the operation member is accommodated in a sleeve wall provided on a side of the entrance / exit.

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