JP2014077251A - Float type flap gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To erect a door body, which is not laid down quickly, by a person or remotely when the door body is inspected or erected in advance while no overflow occurs in the beginning of inflow and it does not become difficult to lay the door body down when a water level falls.SOLUTION: First wire ropes 15 and 16 each have one end fitted to a tip side of a door body 12. The other end of the first wire rope 15 is fitted to a counterweight 18 for erection assistance. A first fixed pulley 17 is installed so that the counterweight 18 reaches the lowest point halfway in an erecting and a laying-down action. The other end of the second wire rope 16 is fitted to a side door stop 13 through a second fixed pulley 19 and a first running pulley 21. A counterweight 22 for remote erecting operation is placed on a counterweight 20 for rope tension holding to which the first running pulley 21 is fitted. A third rope 24 having one end fitted to the side door stop 13 has the other end wound around a drum 26 through a second running pulley 23 fitted to the counterweight 22 and a third fixed pulley 25. The drum 26 is configured to be rotated, reversed, and braked by a person.

Description

  The present invention is, for example, a floating flap gate that is installed at an opening of a breakwater or a tide wall and raises a door to block the opening so that the increased water does not flow into a living space or underground space when the water increases. It is about.

  There is a floating flap gate that lifts the door body using the buoyancy of the water to be introduced so that the increased water does not flow into the living space or underground space when the water rises, for example, blocking the opening of the breakwater ( For example, Patent Document 1).

  However, the floating flap gate disclosed in Patent Document 1 has a problem that when the initial inflow speed is high, the floating operation of the door body 1 is delayed and overflows into the living space or underground space (FIG. 8 (a )reference).

  Further, when the water level is lowered, the door body 1 shows a dangerous behavior in which the door body 1 is maintained up to a water level that is about 1/3 of the door body 1 and then suddenly falls (FIG. 8). (See (b)).

  Among the above-mentioned problems, a floating flap gate has been proposed in which the other end of a rope having a counterweight attached to one end is connected to a door body via a pulley in order to prevent overflow in the initial stage of inflow (for example, Patent Documents). 2).

  The floating-type flap gate proposed in Patent Document 2 compensates for the lack of buoyancy of the floating-type flap gate with the weight of the counterweight, thereby solving the delay in the floating operation of the door body at the initial inflow.

  However, like the floating flap gate proposed in Patent Document 2, when the weight of the counterweight is always applied in a direction that assists the floating operation of the door, it is difficult to fall down when the water level is lowered.

JP 2001-214425 A JP 2003-253912 A

  The problem to be solved by the present invention is that the floating operation of the door body is always assisted in order to solve the problem of the floating flap gate that overflows into the living space and underground space due to the delay of the floating operation of the door body at the beginning of inflow. When a device is installed, it is difficult to fall down when the water level drops.

  The present invention does not delay the floating operation of the door body at the beginning of the inflow, overflows into the living space or underground space, does not become difficult to fall down even when the water level is low, and suddenly falls down It was made with the aim of avoiding any behavior.

  In addition, it was made for the purpose of enabling manual door stand up / down operation and remote stand up operation when you want to stand up at the time of inspection or when you want to stand up beforehand. It is.

The floating flap gate of the present invention is
When the water flows in and is installed at the opening or the entrance, the rotation axis of the door body at the distal end side is the proximal end side in a plane in the height direction in the direction of the flowing water to block the opening or the entrance and exit. Is a floating type flap gate configured to be able to swing up and down with fulcrum as a fulcrum,
One end of each of the first and second ropes is attached to the front end side of the door body,
The other end of the first rope is attached to the counterweight for standing assistance through at least a first fixed pulley, while the first fixed pulley has a set inclination angle of 35 with respect to the horizontal plane of the door body in the middle of standing or lying down. When the counterweight for standing support becomes the lowest point when the angle becomes 55 degrees, the other end of the second rope is placed on the side of the door body that swings upright. Attached to the side doors via the second fixed pulley and the first movable pulley installed on the side opposite to the counterweight for standing assistance,
Further, a counterweight for remote standing operation is placed on the counterweight for holding the rope tension to which the first movable pulley is attached, and the other end of the third rope having one end attached to the side door is connected to the remote weight. The drum is placed around the side door through the second movable pulley attached to the counterweight for standing operation and the third fixed pulley installed at the side door, and this drum is artificially rotated forward and backward. The main feature is that it is movable and the rotation of the drum can be braked.

  In the present invention, when the door body is raised due to a rise in the water level, the door body is pulled in the standing direction by the standing weight assisting weight until the set inclination angle with respect to the horizontal plane becomes 35 degrees to 55 degrees, and the standing body is assisted. The When the set inclination angle of the door body with respect to the horizontal plane exceeds 35 to 55 degrees, the standing assist counterweight acts as a resistance, and the standing speed of the door body is reduced. When these doors are erected, the second rope is not slackened by the drop of the rope tension holding counterweight.

  On the other hand, when the door body falls due to a drop in water level, the door body is pulled in the fall direction by the counterweight for standing assistance until the set inclination angle with respect to the horizontal plane becomes 35 to 55 degrees, and follows the drop in the water level. Assisted. When the set inclination angle of the door body with respect to the horizontal plane becomes smaller than 35 to 55 degrees, the standing assisting counterweight becomes a resistance and the falling speed of the door body is reduced. As the door body is lowered, the rope tension holding counterweight is raised.

  Also, when you want to stand up beforehand at the time of inspection or in advance, when you manually raise the door body, if you manually rotate the drum forward to lower the remote standing operation counterweight, the rope tension holding counter The weight also descends and the door stands up. On the other hand, when the door body is raised by remote operation, if the drum brake is released, the counter weight for remote erection operation descends by its own weight, and the counterweight for holding the rope tension simultaneously descends accordingly. To do. At the time of standing, the counterweight for standing assisting descends until the middle of standing up and rises from the middle standing up to the standing limit, and has the same effect as the standing by rising water level.

  On the other hand, when manually tilting the raised door body, the counterweight for remote standing operation is raised by manually rotating the drum reversely, and the counterweight for holding the rope tension is raised by the weight of the door body. Then, the door body falls down. Even during this fall, the standing support counterweight descends until the middle period of lodging, rises from the middle period of lodging to the limit of lodging, and performs the same action as when falling down due to a drop in water level.

  In the present invention, with the set inclination angle with respect to the horizontal plane of the door body in the middle of standing or lying down due to rising or falling of the water level as a branch point, the standing or assisting of the door body is assisted or standing up or lying down is resisted. For counterweight. Accordingly, overflow can be prevented at the beginning of inflow, while sudden lodging can be prevented before the completion of lodging. Moreover, the impact at the time of completion of standing up can be mitigated, and the followability to the water level is improved in the initial lodging.

  Further, when it is desired to stand up at the time of inspection or in advance, the door body can be erected with a small amount of energy required only to release the braking of the drum rotation or the drum rotation by remote control. In addition, the door body can be laid down by artificial rotation of the drum.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic explaining the principal part structure of the floating-type flap gate of this invention, (a) is the figure seen from the side surface of the door body, (b) is an arrow AA figure of (a) figure. It is the perspective view which looked at the counterweight for remote standing operation and the counterweight part for rope tension maintenance which constitute the floating body type flap gate of the present invention from the upper part. It is a figure explaining an example of the drive and braking device of the drum which comprises the floating type flap gate of this invention. It is the schematic of the floating-type flap gate of this invention, (a) is the figure seen from the side surface, (b) is the figure seen from the plane. It is a figure explaining the principle of operation of the floating type flap gate of the present invention at the time of the rise and fall of the water level, (a) is the inflow initial stage, (b) is the mid-rise stage, (c) is the late stage, and (d) is the initial fall state. , (E) is a diagram showing the late stage of lodging. FIG. 3 is a view similar to FIG. 1 for explaining a manual standing operation of the door body of the floating flap gate of the present invention when it is desired to stand up at the time of inspection or in advance. It is a figure similar to FIG. 1 explaining the standing up operation by remote control of the door body of the floating flap gate of the present invention when it is desired to stand up at the time of inspection or in advance. It is a figure explaining the problem of the conventional floating body type flap gate, (a) is an inflow initial stage, (b) is the figure which showed the time of the water level fall.

  The purpose of the present invention is not to overflow into the living space or underground space at the beginning of the inflow, and to prevent falling down even when the water level is low, and to prevent falling down suddenly. Using the set inclination angle with respect to the horizontal plane as a branch point, it was realized by assisting the standing or falling of the door body, or by arranging a counterweight for standing up so as to provide resistance to standing or falling.

  In addition, the artificial weight lifting / lowering operation and remote standing operation during inspection or when it is desired to stand up in advance and the remote operation of the rope tension holding counterweight attached to the first movable pulley and the second This was realized by moving the counterweight for remote standing operation attached to the moving pulley.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
1 to 4 are diagrams for explaining a floating flap gate according to the present invention. FIG. 1 is a schematic configuration diagram of a main part, and FIG. 2 is a perspective view of a counterweight part for remote standing operation and rope tension holding as viewed from above. FIG. 3 is a diagram showing an example of a drum driving and braking device, FIG. 4A is a schematic view seen from the side, and FIG. 3B is a schematic view seen from the plane.

  1-4, 11 is a floating-type flap gate of the present invention installed on a road surface rs of an opening of a breakwater, for example. The floating flap gate 11 uses the water pressure of the flowing water w as a fulcrum to support the rotating shaft 12c on the base end side 12a when the water w tries to flow into the living space or underground space from the ocean (or river). As described above, the front end side 12b of the door body 12 is swung upright to block the opening in a watertight state.

  In the floating flap gate 11 of the present invention shown in FIG. 1, for example, rods 14 are attached to both side surfaces of the distal end side 12b of the door body 12 to support the hydraulic load and the first and second wire ropes 15 and 16, respectively. It has a function to attach one end.

  The other end of the first wire rope 15 is attached to a stand-up assist counterweight 18 via a first fixed pulley 17 installed at a side door stop 13 above the tip of the door body 12 when lying down. The weight of the standing weight assisting counterweight 18 acts on the door body 12.

  The installation position of the first fixed pulley 17 is set when the set inclination angle θ with respect to the horizontal plane when the door body 12 swings upright is, for example, ½ of the set inclination angle of the door body 12 when the upright is completed. The stand assisting counterweight 18 is installed at the lowest point. According to the investigation results of the inventors, it is known that there is no problem if the set inclination angle θ is in the range of 35 degrees to 55 degrees.

  On the other hand, the other end of the second wire rope 16 is connected to the second constant pulley 19 installed on the side door 13 of the door body 12 on the side opposite to the counterweight 18 for standing assistance, and the rope. It is attached to the side door stopper 13 via a first movable pulley 21 attached to a tension holding counterweight 20.

  A remote standing operation counterweight 22 is placed on top of the rope tension holding counterweight 20, and a second movable pulley 23 is mounted on the remote standing operation counterweight 22 (see FIG. 2).

  The third wire rope 24, which is wound around the second movable pulley 23, is attached at one end to the side door stopper 13 while the other end is attached via a third fixed pulley 25 attached to the side door stopper 13. It is wound around a drum 26 arranged at the side door stop 13.

  In the example shown in FIG. 1, the other end of the second wire rope 16 and the one end of the third wire rope 24 are attached to the side door stopper 13 via screw shafts 30a and 30b. The mounting position with respect to the contact 13 can be adjusted.

  Reference numeral 27 denotes an operating gear reducer directly connected to the shaft 26a of the drum 26. The shaft of one side gear 27a is connected to the shaft of the drum 16, and the shaft of the other side gear 27b is connected to, for example, an electromagnetic brake 28 (see FIG. 3).

  3, 27c is a worm directly connected to the handle 29, 27d is a worm wheel that meshes with the worm 27c, 27e is a frame integrated with the worm wheel 27d, and 27f is a pinion that connects both side gears 27a and 27b.

  In the floating type flap gate 11 of the present invention having the above-described configuration, the functions described below are exhibited when the door body 12 stands and when the door body 12 falls.

(When the door 12 stands up: FIGS. 5A to 5C)
At the beginning of the inflow, the standing assist counterweight 18 is lowered, and the door body 12 is pulled in the standing direction to assist the standing (see FIG. 5A). When the set inclination angle θ of the door 12 with respect to the horizontal plane becomes 45 degrees, for example, the door 12 and the first wire rope 15 are in a straight line (see FIG. 5B), and the stand-up assisting counterweight 18 has the lowest end. It becomes the position. When the set inclination angle θ of the door body 12 with respect to the horizontal plane exceeds 45 degrees, for example, the standing assist counterweight 18 rises due to the standing swing of the door body 12, so that the standing assist counterweight 18 becomes a resistance and the door The standing speed of the body 12 is decelerated, and the impact force when the standing is completed is relaxed (see (c) figure). When the door body 12 stands, the second wire rope 16 does not loosen due to the lowering of the rope tension holding counterweight 20.

(When the door 12 in the standing state is lying down: FIGS. 5D and 5E)
At the initial stage of lodging, the standing assisting counterweight 18 is lowered, and the door body 12 is pulled in the falling direction and follows the drop in the water level (see FIG. (D)). When the set inclination angle θ of the door 12 with respect to the horizontal plane becomes 45 degrees, for example, the door 12 and the first wire rope 15 are in a straight line, and the standing support counterweight 18 is at the lowest end position (FIG. 5). The same state as (b)). When the set inclination angle of the door body 12 with respect to the horizontal plane is smaller than 45 degrees, for example, the standing assist counterweight 18 rises due to the fall of the door body 12, so that the standing assist counterweight 18 acts as a resistance of the door body 12. Decelerate the lodging speed and reduce the impact force when the lodging is completed (see Fig. (E)). As the door body 12 is lowered, the rope tension holding counterweight 20 is raised.

(When standing up at the time of inspection or in advance)
-Artificial standing (Fig. 6)
For example, the handle 29 is manually rotated forward, and the worm wheel 27c (frame 27e) is rotated forward via the worm 27c. At this time, if the rotation of the side gear 27b is constrained by the electromagnetic brake 28, the rotation is transmitted from the pinion 27f to the side gear 27a, so that the drum 26 is rotated forward and the counterweight 21 for remote standing operation is lowered. As the remote standing operation counterweight 21 is lowered, the rope tension holding counterweight 20 is also lowered at the same time, and the door 12 is raised. Since the self-lock mechanism by the worm 27c and the worm wheel 27d works at the time of standing, the door body 12 does not fall down even if the handle 2 is released.

・ When the door is raised by remote control (Fig. 7)
If the electromagnetic brake 28 is released to release the braking of the drum 26, the side gears 27a, 27b and the pinion 27f can be freely rotated, that is, the drum 26 can be freely rotated. To do. As the remote erection operation counterweight 21 is lowered, the rope tension holding counterweight 20 is also lowered at the same time and the door 12 is raised.

  At the time of standing up, the stand-up assisting counterweight 18 is lowered until reaching the set inclination angle θ and rises when the set inclination angle θ is exceeded, and has the same effect as that at the time of standing up due to the rise of the water level.

(When artificially surrendering the standing door 12)
When the standing door body 12 is manually lowered, for example, the handle 29 is reversely rotated, and the worm wheel 27c (frame 27e) is reversely rotated via the worm 27c. At this time, if the rotation of the side gear 27b is constrained by the electromagnetic brake 28, the rotation is transmitted from the pinion 27f to the side gear 27a to reversely rotate the drum 26 and raise the counterweight 21 for remote standing operation. As the remote standing operation counterweight 21 rises, the rope weight holding counterweight 20 also rises due to the dead weight of the door body 12, and the door body 12 falls down. Even during this fall, the standing assisting counterweight 18 is lowered until the set inclination angle θ is reached, and is raised when the set inclination angle θ is smaller than the set inclination angle θ.

  The present invention is not limited to the above examples, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

  For example, in the above example, the electromagnetic brake 28 is shown as a brake device for the drum 26. However, any electromagnetic brake can be used as long as it can be remotely operated and can release the brake of the drum 26 with a small amount of power such as a battery. It is not limited to 28.

  In the above example, the self-locking of the human door 12 is performed using the worm 27c and the worm wheel 27d at the time of standing and surrendering. As long as it does not fall down, it may be provided with a reverse rotation prevention mechanism using a claw wheel. If there is no self-locking mechanism, a brake may be used together.

  In addition, the artificial standing and lying down operation may not be performed manually but may be performed using an electric motor or an engine.

  Further, in the above example, both the artificial and remote control standing / falling device and the standing assist mechanism are installed in the left and right side doors 13, but in the case of a narrower one, the one side door You may install only in 13 hits. Further, in that case, an artificial or remote control standing / falling device may be provided for one side door 13, and a standing assistance mechanism may be provided for the other side door 13.

  In the above example, the rods 14 are attached to both sides of the door body 12 on the distal end side, but one rod may be attached to the entire width direction of the distal end portion of the door body 12. Further, instead of the rod 14, a suspension piece may be attached to the tip of the door body 12, and one end of the first and second wire ropes 15 and 16 may be attached to the suspension piece.

  In the above example, wire ropes 15, 16, and 24 are used, but fiber ropes such as polyamide, polyester, polyethylene, polypropylene, aramid, polyarylate, and ultra-high density polyethylene are used. You may do it.

DESCRIPTION OF SYMBOLS 11 Floating-type flap gate 12 Door body 12a Base end side 12b Front end side 12c Rotating shaft 13 Side door contact 15 1st wire rope 16 2nd wire rope 17 1st fixed pulley 18 Standing assistance counterweight 19 2nd 20 constant pulley for holding rope tension 21 first moving pulley 22 counterweight for remote standing operation 23 second moving pulley 24 third wire rope 25 third fixed pulley 26 drum 27 actuating gear reducer 28 electromagnetic Brake 29 Handle

Claims (2)

When the water flows in and is installed at the opening or the entrance, the rotation axis of the door body at the distal end side is the proximal end side in a plane in the height direction in the direction of the flowing water to block the opening or the entrance and exit. Is a floating type flap gate configured to be able to swing up and down with fulcrum as a fulcrum,
One end of each of the first and second ropes is attached to the front end side of the door body,
The other end of the first rope is attached to the counterweight for standing assistance through at least a first fixed pulley, while the first fixed pulley has a set inclination angle of 35 with respect to the horizontal plane of the door body in the middle of standing or lying down. When the counterweight for standing support becomes the lowest point when the angle becomes 55 degrees, the other end of the second rope is placed on the side of the door body that swings upright. Attached to the side doors via the second fixed pulley and the first movable pulley installed on the side opposite to the counterweight for standing assistance,
Further, a counterweight for remote standing operation is placed on the counterweight for holding the rope tension to which the first movable pulley is attached, and the other end of the third rope having one end attached to the side door is connected to the remote weight. The drum is placed around the side door through the second movable pulley attached to the counterweight for standing operation and the third fixed pulley installed at the side door, and this drum is artificially rotated forward and backward. A floating body-connected flap gate characterized in that it can move and brake the rotation of the drum.   2. The floating flap gate according to claim 1, wherein the drum is configured to be capable of artificial forward and reverse rotation in a braking state.

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