JP6652409B2 - Land type flap gate equipment - Google Patents

Description

  The present invention relates to a land-type flap gate facility for preventing increased water from flowing. In particular, the present invention relates to a land-type flap gate facility capable of effectively preventing the inflow of water even when a bent portion exists.

  At the time of rising water, to prevent the increased water from flowing into, for example, a living space or underground space, the buoyancy of the water that is going to flow in is used to lift the door body and block the opening to the living space or underground space. There is a floating-type flap gate which is operated (for example, Patent Document 1).

  When such a floating flap gate is laid, for example, on the top end face of a seawall, a necessary height can be obtained only in an emergency. In addition, since the height of the embankment can be reduced except in an emergency, the view from the land side to the sea side is improved, and the landscape is not obstructed.

  However, in the case of the floating flap gate laid on the top end face of the levee, the length of the portion that blocks the inflow of seawater is longer than that of the floating flap gate installed at the opening of the breakwater.

  Therefore, in the case of a floating flap gate that forms a seawall on the top end surface of the seawall of a seawall, a plurality of doors are arranged continuously, and all the doors are raised almost simultaneously to form a continuous seawall. are doing. Floating flap gate equipment that forms such a seawall is hereinafter referred to as “land-type flap gate equipment”.

  As a floating flap gate constituting such a land-type flap gate facility, the applicant proposed in Patent Document 2 a counter flap disposed behind each door body. In the case of the floating flap gate proposed in Patent Literature 2, the side door stop of each door required in the conventional floating flap gate can be omitted, and the flatness can be easily ensured.

  In the case of the floating flap gate proposed in Patent Document 2, the side door stop of each door can be omitted. Therefore, it can be installed even in a place where a side door stop higher than the runway surface cannot be permanently installed due to restrictions of the aviation law, for example, an airport runway.

  However, even in the case of the floating flap gate proposed in Patent Document 2, if there is a bent portion, as shown in FIG. 8, one side door for relay is required. Therefore, if there is an airport runway at the place where the bend exists, it cannot be installed on the runway. In FIG. 8, reference numerals 2 and 3 denote floating flap gates, and reference numerals 2a and 3a denote doors of the floating flap gates 2 and 3.

JP 2012-241449 A JP 2015-203275 A

  The problem to be solved by the present invention is that, for example, in a place where a side door stop higher than the runway surface cannot be permanently installed, such as an airport runway, a conventional floating flap gate is installed when there is a bent portion. The point is that you cannot do that.

  The present invention provides a land-type flap gate facility that can be installed even in a place where a side door stop higher than the runway surface cannot be permanently installed, such as a runway at an airport, even when a bent portion exists. It was done for the purpose of doing.

  The present invention relates to a land-type flap gate facility for preventing an inflow of increased water at the time of increasing water, and has the following main features.

That is, in the present invention,
A floating flap gate is provided in each of the one straight region and the other straight region, and a side door stop is provided in a bent portion where these two straight regions intersect.

  The floating flap gate has a configuration in which a plurality of doors are arranged in a row and connected to each other in a plane in the height direction in the direction of the inflowing water, and the front end side of the doors rises and swings with the base end side as a fulcrum. is there. On the other hand, the side door stop is provided with an elevating mechanism for raising the side door stop prior to the upright swing of the floating flap gate.

  According to the present invention having the above configuration, for example, a land-type flap gate facility in a place where a side door stop higher than the runway surface cannot be permanently installed, such as an airport runway, and even when a bent portion exists. Can be installed.

  The elevating mechanism for the side door stop in the present invention is configured such that, for example, by lowering a counterweight, an outer cylinder connected to the counterweight via pulleys and ropes can be raised.

  It is preferable that the counterweight per side door is configured to fall by an external signal.

  Further, if the pulley for the side door contact in the present invention is constituted by a moving pulley portion attached to the counterweight and a fixed pulley portion fixedly disposed at a position opposed to the moving pulley portion, the stroke of the counterweight is reduced. .

  Further, when the rail is arranged on the inner surface of the outer cylinder per side door in the present invention, and the outer cylinder is raised by being guided by the roller arranged at a position opposed to the rail, the ascending movement of the outer cylinder is smooth. Can be done. In addition, stability when a tsunami load is applied can be ensured.

  According to the present invention, a land-type flap gate facility can be installed in a place where a side door stop higher than the runway surface cannot be permanently installed, such as an airport runway, and even when a bent portion exists.

FIG. 3A is a diagram showing a case where the land-type flap gate facility of the present invention is installed in a place where a 90 ° bend exists, FIG. 4A is a plan view, FIG. (D) is a front view showing a time when a tsunami arrives. It is a figure explaining sectioning and explaining the detailed structure of the side door stop of the land type flap gate equipment of the present invention, (a) is a top view, (b) is a front view before an outer cylinder goes up, (c) is an outer cylinder It is a front view after rising. It is a figure explaining an example of an operation principle of a stopper which holds a counterweight which is a component of a side door stop of the land type flap gate equipment of the present invention. 1A and 1B are diagrams illustrating an example of a floating flap gate of a land-type flap gate facility according to the present invention, wherein FIG. 1A is a diagram of a door in a down state viewed from above, and FIG. 2B is a view of a door in a down state viewed from a side. (C) A view of the door body in the laid state from the distal end side, (d) A view of the door body in the laid state from the base end side, and (e) is a view of the water blocking film viewed from above. is there. It is a top view at the time of installing the land type flap gate equipment of the present invention in the place where a bent part exists, (a), when the angle of a bent part is less than 90 degrees, (b), the angle of a bent part is 90 degrees Is greater than. 1 is a plan view showing a case where the land-type flap gate equipment of the present invention shown in FIG. 1 is installed in a place where a bent portion (an angle of a bent portion is 270 °) where the sea side and the land side are opposite to the case shown in FIG. It is. (A) is a plan view when the land type flap gate equipment of the present invention is installed in a bent portion having a large radius of curvature, and (b) is a plan view in a case where it is installed in a straight section having no bent portion. It is a figure explaining the problem at the time of installing the conventional land type flap gate equipment in the place where a bent part exists, (a) is a top view and (b) is a front view.

  An object of the present invention is to make it possible to install land-type flap gate equipment even in a place where a side door stop higher than the runway surface cannot be permanently installed, such as an airport runway, and even when there is a bent portion. And

  And, for the above purpose, the side door stop installed at the bent portion where the one straight region where the floating flap gate is installed and the other straight region intersect can be raised by the elevating mechanism prior to the rising and swinging of the floating flap gate. It was realized by configuring.

One embodiment for carrying out the present invention will be described in detail with reference to FIGS.
Numeral 11 denotes a floating flap gate installed in one linear area S1, and 12 denotes a floating flap gate installed in the other linear area S2.

  As shown in FIG. 4, the floating flap gates 11 and 12 are arranged in a row with a plurality of doors 13 having a base end located on the land side as a fulcrum 13 a and a tip end located on the sea side swinging up and down. It is a configuration that is connected while maintaining a watertight state.

  In this watertight connection, for example, a trapezoidal water blocking film 14 having a width that gradually increases from the base end side to the tip end side of the door body 13 when viewed from above is disposed between the adjacent door bodies 13, It is performed by tightening and fixing to each adjacent door body 13 via watertight rubber.

  Then, one end of a rope 15 is attached to, for example, a base end face of each door body 13. The other end of the rope 15 is attached to the counterweight 18 via two constant pulleys 17a and 17b arranged in an internal space of a column 16 provided on the land where the base end of the door 13 is located.

  At this time, the counterweights 18 of the fixed pulleys 17a and 17b are at the lowest point when the door body 13 is being erected or laid down. Before completion, it is installed in a position that acts as a resistance to standing or resistance to lodging.

  The floating-type flap gates 11 and 12 having the above-described structure have good followability to the water level at the start of standing or the start of lodging. On the other hand, before the completion of the standing or the completion of the falling, the impact of the standing or the falling can be reduced.

  In addition, if the ceiling surface of the column 15 is substantially the same height as the surface of the door 13 in the down state, when the door 13 is in the down state, the floating flap gates 11 and 12 are higher than the door 13 in the down state. Since there is no component, the landscape is not obstructed.

Reference numeral 21 denotes a side door stop installed at a bent portion C at an angle θ of 90 °, for example, where the two linear regions S1 and S2 intersect. For example, as shown in FIG. 2, the side door stop 21 includes a frame 22 buried in the ground of the bent portion C, a frame structure 23 installed on the upper surface of the frame 22, and these frame 22 and the frame structure. An outer cylinder 25 that covers the outer cylinder 23 and an elevating mechanism 40 for the outer cylinder 25 are provided.
A watertight rubber (not shown) is provided on the side of the door body 13 opposite to the side door stop 21.

  In the embodiment shown in FIG. 2, the frame structure 23 includes an upper horizontal frame 23a in which four horizontal linear members 23aa are formed in a cross-girder shape, and a lower portion in which the same four horizontal linear members 23ba are formed in a cross-girder shape. The four corners of the horizontal frame 23b are connected by four vertical straight members 23c.

  The fixed pulley portion 26 is attached below the upper horizontal frame 23a of the frame structure 23 via a connecting member (not shown). The constant pulley portion 26 has a configuration in which six constant pulleys 26a arranged in a line are rotatably sandwiched between holding members 26b from both sides. Then, at each of the four corners of the upper horizontal frame 23a and the lower horizontal frame 23b of the frame structure 23, a total of 16 rollers 27 are provided in a protruding manner so as to have an angle of 90 °.

  On the other hand, a rail 28 extending in the vertical direction is installed at a position on the inner peripheral surface of the outer cylinder 25 facing the roller 27, and the roller 27 guides the rail 28 so that the outer cylinder 25 22 so as to smoothly move up and down with respect to 22, and to ensure stability against a hydraulic load during a tsunami action.

  In addition, a counterweight 24 is disposed inside the framework structure 23 and below the six constant pulleys 26a constituting the constant pulley portion 26. Then, three moving pulleys 29a constituting the moving pulley portion 29 are aligned and mounted in a row in the notch portion above the counterweight 24, and the counterweight is inserted through the constant pulley 26a and the moving pulley 29a. The wire rope 30 is suspended so that the wire 24 can be lifted.

  One end and the other end of the wire rope 30 are respectively fixed to bearings 31a and 31b provided at lower positions of opposed inner surfaces of the outer cylinder 25 in the alignment direction of the fixed pulley 26a and the moving pulley 29a.

  When the counterweight 24 is placed on the upper surface of the skeleton 22, the outer cylinder 25 is at the upper limit position, and when the counterweight 24 is lifted away from the skeleton 22, the outer cylinder 25 descends most. The fixed positions of both ends of the wire rope 30 are determined so that the positions are determined.

  In the embodiment shown in FIG. 2, the lifting mechanism 40 is composed of the counterweight 24, the constant pulley section 26, the moving pulley section 29, the wire rope 30, the roller 27, and the rail 28.

  In the case of the elevating mechanism 40, the net weight of the counterweight 24 is determined to be slightly larger than the net weight of the outer cylinder 25 on which the rail 28 is installed. Then, at normal times, the stopper 32 is held at an upper position away from the frame 22.

  Here, the net weight refers to the downward force of each of the counterweight 24 and the outer cylinder 25 in consideration of the number of the moving pulleys 29a and the mechanical resistance of the constant pulleys 26a and the moving pulleys 29a.

  An example of the stopper 32 is shown in FIG. The stopper 32 shown in FIG. 3 moves the rod of the hydraulic cylinder 32a disposed on both sides of the counterweight 24 in the alignment direction of the moving pulley 29a by opening and closing the electromagnetic valve 32b by an external signal. Configuration. When the counterweight 24 is held at the protruding limit position of the rod, the electromagnetic valve 32b is closed by an external signal to prevent the counterweight 24 from falling.

  In the land type flap gate equipment of the present invention provided with the floating flap gates 11 and 12 and the side door stop 21 having the above-described configuration, normally, as shown in FIG. It is provided so as to be substantially the same height as the body 13. By doing so, the flatness of the entire equipment can be ensured.

  Then, when the arrival of the tsunami is expected, before the arrival of the tsunami, the electromagnetic valve 32b is opened by an external signal to lower the counterweight 24 to the upper surface of the frame 22, and the outer cylinder 25 is raised (FIG. 1 (b)). At this time, if the interference rubber 33 is provided on the upper surface of the skeleton 22 immediately below the counterweight 24, the impact when the counterweight 24 descends and reaches the upper surface of the skeleton 22 can be reduced.

  Thereafter, when the tsunami arrives, the buoyancy acting on the door 13 causes the doors 13 of the floating flap gates 11 and 12 to rise and form a continuous tide wall, thereby preventing the tsunami from entering (FIG. 1). (C)).

  The present invention is not limited to the above example, and the flap gates 11 and 12, the side door 21, and the side door 21 lifting mechanism 40 may be provided within the scope of the technical idea described in each claim. Needless to say, the configuration and the like may be changed in the embodiment as appropriate.

  For example, in the embodiment described above, the moving stroke of the counterweight 24 is reduced by using a plurality of moving pulleys 29a, but in this case, the weight of the counterweight 24 increases. Therefore, if the lifting stroke of the counterweight 24 can be secured, the weight of the counterweight 24 may be reduced without using the moving pulley 29a.

  In the above embodiment, the electromagnetic valve 32b constituting the stopper 32 is opened and closed by an external signal. However, the external signal is an automatic signal based on a manual operation or detection of a seismic wave. And any signal such as an automatic signal linked with the tsunami warning. The communication equipment may be wired or wireless. The principle of operation of the stopper 32 is not limited to the hydraulic cylinder 32a shown in the embodiment, but may be an electromagnet or the like as long as the counterweight 24 can be held so as not to fall.

  In the above embodiment, the outer cylinder 25 is supported by the 16 rollers 27, and the counterweight 24 is suspended by one wire rope 30, but the number of the rollers 27 and the number of the wire ropes 30 to be used are suspended. May be appropriately determined according to the scale of the facility. When the interference rubber 33 is provided on the upper surface of the skeleton 22, the arrangement position, dimensions, and material of the interference rubber 33 are appropriately determined according to the scale of the facility.

  Further, although not described in the above embodiment, in order to smoothly move the counterweight 24 up and down and reduce the swing during an earthquake, the counterweight 24 is guided up and down to reduce the swing during the earthquake. It is desirable to provide a guide.

  Further, in the above-described embodiment, the case where the bending portion C is installed at the bending portion C having an angle θ of 90 ° is described. However, the angle θ of the bending portion is not limited to 90 °, and as shown in FIG. Even if it is less than 90 °, it may be more than 90 ° as shown in FIG.

  Also, as shown in FIG. 6, the case where the angle θ of the bent portion is 90 ° and the case where the sea side and the land side are opposite (the case where the angle θ of the bent portion is 270 °) may be used.

  Further, the land type flap gate equipment of the present invention can be installed in a bent portion having a large radius of curvature as shown in FIG. 7A, or in a straight section as shown in FIG. 7B. In this case, the flap gates 11 and 12 are arranged on opposite side surfaces of the side door stop 21.

11, 12 Floating flap gate 13 Door 13a Supporting point 21 Side door contact 24 Counter weight 25 Outer cylinder 26 Constant pulley section 26a Constant pulley 27 Roller 28 Rail 29 Moving pulley section 29a Moving pulley 30 Wire rope 32 Stopper 40 Lifting mechanism S1 One straight area S2 The other straight area C Bend

Claims (4)

A land-type flap gate facility that prevents the inflow of increased water during flooding,
Floating flap gates installed in one straight region and the other straight region, and side door stops installed in a bent portion where these two straight regions intersect,
The floating flap gate has a configuration in which a plurality of doors are arranged in a row and connected to each other in a plane in a height direction in a direction of the inflowing water, the front end of the doors rising and swinging with the base end as a fulcrum,
Said side doorstop, prior to standing oscillating said floating flap gate, have a lifting mechanism for raising the side doorstop,
The land-type flap is characterized in that the lifting mechanism for the side door stop is configured so that an outer cylinder connected to the counterweight via a pulley and a rope can be raised by lowering the counterweight. Gate equipment. The land type flap gate equipment according to claim 1, wherein the counterweight is configured to be lowered by an external signal. The land according to claim 1 or 2, wherein the pulley that guides the rope includes a moving pulley portion attached to a counterweight and a fixed pulley portion fixedly disposed at a position facing the moving pulley portion. Type flap gate equipment. 4. The ascending movement of the outer cylinder, wherein the outer cylinder having a rail disposed on an inner surface thereof is guided by a roller disposed at a position opposed to the rail, and is moved upward. The land-type flap gate facility according to any one of the above.

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