JP6865241B2 - Passage gate device - Google Patents

Description

The present invention relates to a ship-passing gate device provided in a flow control fence, driftwood stop equipment, etc. installed in a dam, a reservoir, a river, or the like.

Dams, reservoirs, etc. may be equipped with, for example, a flow control fence for blocking the flow of water on the surface layer side for the purpose of eutrophication prevention measures and conservation of the water environment. In the water flow control fence, for example, a water-impervious sheet or the like is buoyantly supported on the water by a float or the like, and a weight is attached to the lower end of the sheet and stretched in the water. A passage gate is provided at a predetermined position on the flow control fence so that dust collectors and surveillance vessels can pass through. The door of the transit gate is normally closed, the door is opened when the ship passes, and it is closed again after the ship passes. As for the conventional ship passage gate, for example, a type in which the door body that opens and closes the gate opens and closes in a double-door manner has been proposed. The two door bodies are locked in a closed state, and manually or automatically when the ship passes by. It is known that the door is provided so as to release the lock and open the door body (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2004-132140

The ship passage gate of Patent Document 1 is provided with a foldable lock member extending to and engaging with the door body to be fixed on the fixed side of the opening / closing portion, and the door body is provided with a foldable lock member. When the ship pushes the ship protective material when passing the ship, the lock member is automatically disengaged from the door body which engages with the lock member and becomes the fixed side, and when the door is closed after passing the ship , the fixed side An automatic locking means for automatically engaging the lock member with the door body is provided, and the door is unlocked and opened only by the propulsive force of the ship. However, since Patent Document 1 and other conventional double-door type ship gates are provided with a lock / unlock mechanism for the door body that opens and closes, the structure is complicated due to the large number of members and many movable parts, and the manufacturing cost. It was expensive and required frequent maintenance. In addition, there is a risk that the door body cannot be unlocked smoothly when passing through the gate, and the ship may collide with the gate, causing an accident in which the passengers fall into the water or damage the hull or gate. There was a problem that it was sexual and inferior in practicality. In addition, conventional ship gates are often designed according to the size of one type of ship, but the door body of the ship gate is designed to be large according to the size of a large ship such as a dust collector. The large doors cannot be opened smoothly on patrol vessels, Japanese vessels, etc., which are smaller than dust collectors, due to insufficient output of the vessels, etc. It was difficult or impossible to deal with. However, in recent years, from the viewpoint of operational cost and usability of dust collection work and monitoring work, there is a strong demand for the development of a passage gate capable of handling a plurality of types of ships of different sizes.

The present invention has been made in view of the above-mentioned conventional problems, and one of the purposes thereof is a highly practical ship-passing gate device which has a simple structure, can be manufactured at low cost, and can smoothly pass a ship. Is to provide. Furthermore, another object is to provide a transit gate device capable of smoothly passing a plurality of types of ships of different sizes.

In order to solve the above problems, the present invention is a ship-passing gate device provided in a part of a partition facility (100) on the water and passing a ship as needed, and a frame having a gate gap 20 through which the ship BT passes. The body 12, the door body 14 that opens and closes the gate gap 20, the buoyancy support mechanism 16 that supports the buoyancy so that the door body 14 is always positioned on the water, and the gate gap 20 that the door body 14 is constantly erected on the water. In the closed state and when the ship BT passes through the gate gap 20, the door body 14 is pushed and the door body 14 is rotated toward the front side of the ship around the axis intersecting the direction of travel of the ship and submerged. a guide mechanism 18 that rotates the guide state and, selectively door 14 to be, viewed including the in door 14 is pressing portion ship abuts when the ship BT passes, said door It is composed of a ship-passing gate device 10 which is attached to both sides of the body 14 in the width direction at a distance from each other and is provided with a pressing portion 38 projecting from the door body 14 in the front-rear direction along the traveling direction of the ship.

Further, the guide mechanism 18 may have a shaft support portion 32 that rotatably connects the lower end of the door body 14 in the upright state to the frame body 12 via a horizontal axis that intersects the traveling direction of the ship.

Further, the central portion of the door body 14 in the width direction may have recesses 44 recessed downward from both sides in the width direction corresponding to the downwardly convex ship bottom structure.

Further, the pressing portion 38 may include a contact portion 40 that comes into contact with the ship BT and a support frame 42 that supports the contact portion 40 at a separated position protruding from the door body 14.

Further, the buoyancy support mechanism 16 may include a float body 34 attached to the pressing portion 38 or the door body 14.

Further, the pressing portion 38 may be provided with guide portions 50a and 50b provided at different positions in the width direction so as to correspond to different ship widths.

Further, in the central portion of the door body 14 in the width direction, a part of the door body 14 is divided so as to be openable and closable, and a divided door portion 54 is provided so as to be swingable in the traveling direction of the ship with the upper end portion as a free end. It may have been done.

According to the ship-passing gate device of the present invention, it is a ship-passing gate device provided in a part of a partition facility on the water and passing a ship as needed, and a frame having a gate gap through which the ship passes and a gate gap. A door body that opens and closes, a buoyancy support mechanism that buoyantly supports the door body so that it is always located on the water, a state in which the door body is constantly erected on the water to close the gate gap, and a ship passes through the gate gap. Guidance to selectively rotate and guide the door body to the state where the door body is pushed and the door body is rotated toward the front side of the ship around the axis intersecting the direction of travel of the ship and submerged. Since it includes a mechanism, the propulsive force of the ship can be used to open the door and pass smoothly through the ship, and the door is automatically closed after passing. The gate can be manufactured at low cost with a simple configuration. Further, it is possible to provide a ship gate device that is easy to open and close, has high reliability, and is highly practical.

Further, the guide mechanism has an extremely simple structure by having a shaft support portion that rotatably connects the lower end of the door body in the upright state to the frame body via a horizontal axis that intersects the traveling direction of the ship. Moreover, at low cost, it is possible to realize a guidance mechanism that can reliably and smoothly switch between the standing state of the door body and the rotating submerged state, and the ship can pass smoothly.

Further, the door body is a pressing portion that the ship comes into contact with when the ship passes, and is attached to both sides of the door body at a distance from each other in the width direction, and is attached back and forth from the door body along the traveling direction of the ship. By providing a pressing portion that protrudes from the door body, the ship hits the pressing portion that protrudes from the door body and passes through, so that the rotation of the door body when the ship passes. The submerged position can be set sufficiently deeper than the bottom of the ship, and the screw does not hit the door body smoothly and safely without flipping up an outboard motor that has a screw or the like provided at the stern of the ship when passing through the gate. Can pass the ship. In addition, for example, by setting a pressing portion corresponding to each width size of a large ship such as a dust collecting ship, a patrol ship narrower than the dust collecting ship, a Japanese ship, etc., one passage gate It is also possible to open and close the door body to allow ships to pass through in response to multiple types of ships of different sizes in the device.

In addition, the central portion of the door body in the width direction has recesses recessed downward from both sides in the width direction corresponding to the downwardly convex ship bottom structure, so that the door corresponds to the ship bottom structure. It is difficult for the body to come into contact with it, and the ship can pass smoothly.

In addition, the pressing portion has a simple structure by including a contact portion that comes into contact with the ship and a support frame that supports the contact portion at a separated position protruding from the door body. It can be realized concretely and can be manufactured at low cost. Further, for example, by installing a float or the like inside the support frame, each member can be efficiently arranged, and the buoyancy support of the buoyancy support mechanism can be accurately designed.

In addition, the buoyancy support mechanism is configured to include a pressing portion or a float body attached to the door body, so that the door body is erected from a normal standing state and a rotating submerged state after the ship has passed. A buoyancy support mechanism that can return to the state can be realized with a simple configuration.

In addition, the pressing portion is provided with guide portions provided at different positions in the width direction so as to correspond to different ship widths, so that a type of ship having a width smaller than the width of the gate can be passed. When it is necessary to make it pass through the guide part as a guide, the screw of the ship passes between the pressing parts and passes smoothly and safely so that the screw does not come into contact with each member. Can be made to. As a result, one vessel gate device can be used to accommodate vessels of different sizes, such as large vessels such as dust collectors, patrol vessels narrower than dust collectors, and Japanese vessels. it can.

Further, in the central portion of the door body in the width direction, a part of the door body is divided so as to be openable and closable, and a divided door portion provided so as to be swingable in the traveling direction of the ship with the upper end portion as a free end is provided. By doing so, it is possible to efficiently and smoothly pass a ship having a width corresponding to the gate gap, a ship having a width different from that of the gate gap, and the like. As a result, one vessel gate device can be used to accommodate vessels of different sizes, such as large vessels such as dust collectors, patrol vessels narrower than dust collectors, and Japanese vessels. it can.

It is a top view of the ship-passing gate device which concerns on 1st Embodiment of this invention. It is a front view of the ship gate device of FIG. FIG. 5 is a cross-sectional view taken along the line AA of the ship-passing gate device of FIG. It is the schematic of the flow control fence which installed the ship gate device of FIG. It is an operation explanatory view of the ship-passing gate device of FIG. It is a top view of the ship-passing gate device which concerns on 2nd Embodiment of this invention. It is a front view of the ship gate device of FIG. It is a front view of the ship-passing gate device which concerns on 3rd Embodiment of this invention. FIG. 8 is a cross-sectional view taken along the line BB of the ship-passing gate device of FIG. It is an operation explanatory view of the ship-passing gate device of FIG. It is an operation explanatory view of the ship-passing gate device of FIG.

Hereinafter, embodiments of the ship-passing gate device of the present invention will be described with reference to the accompanying drawings. The ship-passing gate device according to the present invention is, for example, a flow control fence or boom for blocking the flow of water on the surface layer side, or a driftwood stop facility for preventing driftwood or dust from flowing into a dam, a reservoir, or the like. It is a gate device for passing ships, which is installed in a part of the water division equipment such as, etc., and allows ships to pass through as needed. 1 to 5 show a first embodiment of the ship-passing gate device of the present invention. As shown in FIGS. 1, 2 and 3, in the present embodiment, the frame body 12 having the gate gap 20 through which the ship BT passes, the door body 14 for opening and closing the gate gap 20, and the buoyancy support of the door body 14 A mechanism 16 and a guide mechanism 18 for rotating and guiding the door body 14 are provided.

The ship-passing gate device 10 of the present embodiment will be described, for example, by an example provided at an intermediate position of the flow control fence 100 installed in the dam, as shown in FIG. The water flow control fence 100 is, for example, a well-known one, and is buoyantly supported on water by attaching a float body such as Styrofoam to the upper end side of a water-impervious sheet made of a water-impervious material such as polyester, tarpaulin or a composite material thereof. At the same time, a weight made of a metal chain is attached to the lower end of the water-impervious sheet and is stretched from the water surface to a certain water depth. The flow control fence 100 is installed so as to partition the surface layer side of the water area of the dam by fixing both ends in the longitudinal direction to a concrete anchor block fixed to the land so as to block the flow of water on the surface layer side of the dam. It has become. A ship gate device 10 is provided in a part of the flow control fence 100.

As shown in FIGS. 1 and 2, the frame body 12 is a gate frame connected to the water flow control fence 100 to form a gate gap 20 having a width and depth through which a ship can pass. In the present embodiment, the frame body 12 is made of, for example, a metal plate such as an iron plate that has been subjected to rust-preventive plating, is formed in a substantially U-shape with the upper side open when viewed from the front, and a substantially rectangular gap in the central portion thereof. Is the gate gap 20. Floats 22 for buoyantly supporting the frame body 12 on water are attached to the upper ends of both ends of the frame body 12 in the width direction. A water-impervious sheet 24 made of the same material as the water-impervious sheet of the water flow control fence 100 is stretched on both sides of the frame 12 in the width direction and on the outer periphery on the lower side. A weight 26 made of a metal chain is attached to the lower end of the water-impervious sheet and is stretched underwater. The frame body 12 is connected to the water flow control fence 100 via connecting metal fittings 28 provided on both ends. A scaffolding 30 for work is provided on the floats 22 on both ends of the frame body 12, and handrails are erected. The WL in each figure represents the water level.

As shown in FIGS. 1 and 2, the door body 14 is attached to the frame body 12 so as to open and close the gate gap 20 of the frame body 12. In the present embodiment, the door body 14 is provided, for example, in a rectangular frame shape having a shape and size corresponding to the gate gap 20 so as to maintain water shielding. For example, the door body 14 is provided by stretching a water-impervious sheet on a metal frame frame having a rectangular outer contour. The door body 14 is attached to the frame body 12 via a shaft support portion 32 constituting the guide mechanism 18 described later, and the gate gap 20 is closed in an upright state with the upper end portion as a movable end, and the shaft support portion. It is configured so that it can swing in the passing direction of the ship so that it can be switched between a state in which it tilts around the rotation axis to open the gate gap. For example, a rubber material or the like is provided at the portions of the door body 14 that come into contact with the frame bodies 12 on both ends.

The buoyancy support mechanism 16 is a buoyancy imparting means for the door body that supports the buoyancy so that the door body 14 is always positioned on the water. As shown in FIGS. 1, 2, and 3, the buoyancy support mechanism 16 includes, for example, a float body 34 fixed to the door body 14. In the present embodiment, the float body 34 is provided, for example, by coating styrofoam having a predetermined size and shape designed for buoyancy with a synthetic resin such as fiber reinforced plastic, and is provided on both ends in the width direction of the door body 14. Therefore, the door body 14 is arranged in a state of being close to the front and rear plate surfaces of the door body 14, and is fixed to the door body 14 via a fixing metal fitting or the like. As described above, the float body 34 constantly exerts buoyancy so as to close the gate gap 20 when the door body 14 is in the upright state, and automatically enters the upright state when the door body 14 is tilted into water. Buoyancy can be applied to restore it. The buoyancy support mechanism 16 is not limited to the above configuration, and may be arbitrary as long as the door body 14 is buoyantly supported in an upright state. For example, a float may be attached to the upper end of the door body 14, or the door body itself may be formed of a material having a large buoyancy action such as styrofoam.

The guide mechanism 18 has a state in which the door body 14 is erected on the water to close the gate gap 20, and a direction in which the door body 14 is pushed when the ship passes through the gate gap 20 and intersects with the traveling direction of the ship. This is a door body rotating means for selectively rotating and guiding the door body 14 to a state in which the door body 14 is rotated and submerged toward the front side of the ship around an axis. As shown in FIGS. 1, 2, and 3, in the present embodiment, the guide mechanism 18 includes a shaft support portion 32 that rotatably attaches the lower end side of the door body 14 to the frame body 12. The shaft support portion 32 is configured such that, for example, a horizontal axis intersecting in the passing direction of the ship is a rotation axis, and the door body 14 can swing around the horizontal axis with the upper end side of the door body 14 as a movable end. The shaft support portion 32 rotates, for example, a door-side bearing bracket projecting downward from the frame frame at the lower end of the door body 14 and a frame-side bearing bracket projecting upward from the frame body 12. The door body is rotatably provided in an upright state and a rotating submerged state tilted in the forward direction or the rear direction. A closing sheet 36 made of a water-impervious rubber sheet is provided in the gap between the door body 14 and the frame body 12 caused by the provision of the shaft support portion 32, and the door body 14 is in an upright state and is submerged in rotation. It is always closed at any of the rotating positions in the state, and the impermeable function is maintained.

In the present embodiment, as shown in FIGS. 1 and 3, the door body 14 is provided with a pressing portion 38 that the ship comes into contact with when the ship passes through. The pressing portion 38 is located at positions separated from each other on both sides of the door body 14 in the width direction, and projects from the door body 14 in the front-rear direction along the traveling direction of the ship. That is, the pressing portion 38 is provided at a position separated from each other so as to provide a gap in the central portion in the width direction of the door body 14, and is provided in a state of protruding from the plate surface of the door body 14. Since the pressing portion 38 projects forward and backward from the door body 14, when the ship passes through the ship passage gate device 10, the ship comes into contact with the door body 14 and tilts the door body 14 together to cause a rotating submerged state. However, the door body 14 is rotated and submerged at a water depth position deeper than the pressing portion 38 with which the ship abuts according to the protrusion width. Therefore, as shown in FIG. 5, when the stern side of the ship passes through the gate gap 20 while hitting the pressing portion 38, the ship such as a screw provided at the center in the width direction of the stern and projecting downward. The equipment of the external unit can pass through the central position between the pressing portions 38 and without touching the door body 14. As a result, when the ship passes through the ship-passing gate device, for example, an operation of flipping up the outboard motor is not required, and the ship can pass smoothly. From this, the protruding width of the pressing portion 38 from the door body 14 is pressed against the bottom of the ship so that, for example, when the stern of the ship passes through the gate, the members of the propulsion device such as the screw of the ship do not hit. It is preferable that the protrusion width is set to be sufficiently larger than the width in which the screw or the like protrudes from the contact position with the portion 38.

In the present embodiment, for example, when viewed from the front, the pressing portion 38 is provided on both end sides of the door body 14 in the width direction with a width of about 1/3 of the width of the door body, and the door body. It is provided higher than the height of the central portion in the width direction of 14. That is, the central portion of the door body 14 in the width direction is provided so as to be recessed lower than the pressing portions 38 on both end sides. Each of the pressing portions 38 is provided by assembling, for example, a contact portion 40 that comes into contact with the ship and a support frame 42 that supports the contact portion 40 at a separated position protruding from the door body 14. For example, the support frame 42 is formed so that the outer contour is substantially rectangular in the front view, the upper side is straight in the vertical direction parallel to the door body in the side view, and the lower side is gradually inclined so as to approach the door body. A plurality of straight pipe members are assembled so as to form a substantially triangular shape to form a space inside. Therefore, the support frame 42 is provided so as to surround the float body 34 of the buoyancy support mechanism 16 fixed to the door body 14. The contact portion 40 is made of, for example, a flat synthetic rubber, and the upper side is vertically stretched in parallel with the door body 14, and the lower side is continuously inclined to the lower end of the upper side portion. It is stretched over a part of the part. The structure of the pressing portion 38 is not limited to the above-mentioned structure, and may be any structure. For example, the contact portion 40 of the pressing portion 38 is not a flat surface, but may be provided as a curved surface with a radius or a rod-like shape. Further, a plurality of pairs of pressing portions 38 may be provided in the width direction of the door body. Further, the float body 34 of the buoyancy support mechanism 16 described above may be attached to the pressing portion 38.

Next, the operation of the ship-passing gate device 10 according to the present embodiment will be described. As shown in FIG. 5A, the ship-passing gate device 10 always holds the door body 14 in an upright state by the buoyancy action of the float body 34 of the buoyancy support mechanism 16, and the gate gap 20 of the frame body 12 Is closed. For example, when a ship such as a dust collector passes, as shown in FIG. 5B, the ship first comes into contact with the pressing portion 38, and the pressing portion 38 and the door body 14 are driven by the propulsive force of the ship. Is integrally tilted and rotates around the horizontal axis of the shaft support 32 of the guide mechanism 18. Further, as the ship advances through the gate gap, as shown in FIG. 5C, the rotation angle of the door body 14 becomes large, and the ship is submerged in a sideways manner. In this state, the bottom of the ship comes into contact with the pressing portions 38 protruding from both ends of the door body 14, so that the door body 14 is sufficiently larger than the screws of the outboard motor provided at the center position in the width direction of the stern. It will be rotated and submerged in a deep water position, and the screw or the like can pass between the pressing portions 38 without hitting the door body 14. After the ship has completely passed, the door body 14 automatically returns to the upright state by the buoyancy action of the float body 34 of the buoyancy support mechanism 18, and the gate gap 20 of the frame body 12 is closed. In this way, the ship can pass smoothly.

Next, a second embodiment of the ship-passing gate device of the present invention will be described with reference to FIGS. 6 and 7. The same components and members as those in the first embodiment described above are designated by the same reference numerals, and detailed description thereof will be omitted. Similar to the above embodiment, the ship-passing gate device 10-2 of the present embodiment includes a frame body 12, a door body 14, a buoyancy support mechanism 16, and a guide mechanism 18. Further, a pressing portion 38 projecting from the door body 14 is provided. As shown in FIGS. 6 and 7, in the present embodiment, the central portion of the door body 14 in the width direction has recesses 44 recessed downward from both sides in the width direction corresponding to the downwardly convex ship bottom structure. Have. A keel roller 46 is provided in the central recess 44 of the door body 14, for example. For example, even a ship having a pointed shape such as a Japanese ship can open the gate gap 20 by pushing the keel roller 46 or by tilting the door body 14 in cooperation with the pressing portion 38.

In the present embodiment, the pressing portion 38 is provided at a position slightly inside the door body 14 from both ends in the width direction in a front view. The pressing portion 38 is assembled by projecting the support frame 42 from the door body as in the first embodiment, and a rubber plate is stretched on the front side thereof. Further, on the surface of the rubber plate of the pressing portion 38, guide portions 50a and 50b are provided so as to form a contact portion against which the ship hits and to project at a plurality of positions having different width directions. .. In the present embodiment, for example, the frame body 12 is provided with a gate gap 20 corresponding to a width W1 of a dust collector having a relatively large width. The guide portions 50a and 50b are guide means set corresponding to three types of different ship widths, such as a patrol boat width W2 narrower than a dust collector and a Japanese boat width W3 narrower than the dust collector. Is. The guide portions 50a and 50b are made of, for example, a substantially D-shaped rubber member whose cross-sectional shape is convex outward, and are provided long in the vertical direction. The first guide portion 50a is set, for example, at a separation position in the width direction corresponding to the width W2 of the patrol boat, and is vertically long installed at an intermediate position in the width direction of each pressing portion 38 in front view. There is. The second guide portion 50b is set, for example, at a distance direction in the width direction corresponding to the lateral width W2 of the patrol boat, and is vertically long toward the side edge portions of the pressing portions 38 close to each other in the front view. is set up. The second guide portion 50b is set to have a smaller protrusion width than the first guide portion 50a, but may have the same size. In the present embodiment, for example, when a dust collector passes by, the ship is steered and passed in accordance with the width of the gate gap 20 of the frame body 12, so that a screw or the like of the ship can move between the pressing portions 38. You can pass through the ship smoothly. In addition, when the patrol boat passes by, the first guide portions 50 on both sides are used as a guide, and the first guide portions 50a are operated so as to hit both ends of the vessel, so that the screws of the vessel and the like are pressed. It is possible to pass between 38 and the ship smoothly. Similarly, when a Japanese ship passes by, the second guide parts 50b on both sides are used as a guide, and the second guide parts 50b are operated so that the second guide parts 50b hit both ends of the ship. The ship can pass smoothly by passing between the parts 38. By providing the guide portions 50a and 50b as described above in the pressing portion 38 in this way, it is possible to safely pass a plurality of types of ships having different widths depending on the guide portions. In the present embodiment, the guide portions 50a and 50b also serve as the contact portions where the ship of the pressing portion 38 hits, but they may be provided separately.

Next, a third embodiment of the ship-passing gate device of the present invention will be described with reference to FIGS. 8 to 11. The same components and members as those in the first embodiment described above are designated by the same reference numerals, and detailed description thereof will be omitted. Similar to the above embodiment, the ship-passing gate device 10-3 of the present embodiment includes a frame body 12, a door body 14, a buoyancy support mechanism 16, and a guide mechanism 18, and further projects back and forth from the door body 14. The provided pressing portion 38 is provided. In the present embodiment, as shown in FIGS. 8 and 9, the structure of the door body 14 is different from that of the first and second embodiments. A split door body 40 is provided in the central portion of the door body 14 in the width direction so that a part of the door body 14 can be opened and closed. It is configured by combining a base door body 56 provided in a substantially U shape with the upper side open so as to surround the outside of the divided door body 54.

In the split door body 54, for example, a water-impervious sheet is stretched on a substantially U-shaped frame frame that is open upward, and a float portion 54a for supporting buoyancy is integrally provided on the upper end side. There is. The upper end of the split door body 54 provided with the float portion 54a is recessed downward from both end sides of the base door body 56 to provide the recess 44. The base door body 56 is provided with a frame frame assembled in a substantially U-shape so as to have an outer contour that matches the size and shape of the gate gap, and a water-impervious sheet is stretched on the frame frame. The lower end side of the split door body 54 is attached to the base door body 56 via a shaft support portion 58 whose rotation axis is the horizontal axis direction intersecting the traveling direction of the ship. For example, the width of the gate gap, that is, the width of the base door body 56 is set to the width through which a dust collector having a relatively large width passes, and the width of the split door body 54 is a patrol boat having a width smaller than that of the dust collector. The width is set so that (or Japanese ships) can pass through. The split door body 54 is always buoyantly supported by the float portion 54a in an upright state, and is provided swingably around the horizontal axis of the shaft support portion 58 with the upper end portion as a free end, and is provided at the center of the base door body 56. The gap is closed so that it can be opened and closed. A closing sheet 60 made of a water-impervious rubber sheet is provided in the gap between the split door body 54 and the base door body 56 by the shaft support portion 58, and is always closed. The pressing portions 38 are provided on both sides of the base door body 56 in the width direction. The basic configuration of the pressing portion 38 is substantially the same as that of the first embodiment, and includes the abutting portion 40 and the support frame 42. The width of the door is narrow. The float bodies 34 of the buoyancy support mechanism 16 are fixed to both ends in the width direction of the base door body 56 and are installed in a state of being surrounded by the support frame 42.

As shown in FIG. 10, for example, when a ship BT1 having a width substantially the same as the gate gap of a dust collector or the like passes through the ship-passing gate device 10-3 of the present embodiment, both widths of the ship are pressed. It abuts on 38, and as the ship advances, the pressing portion 38 and the base door body 56 of the door body rotate around the horizontal axis of the shaft support portion 34, opening the gate gap 20 and allowing the ship to pass. At this time, as shown in FIG. 10B, the split door body 54 is erected in water by being rotated around the horizontal axis of the shaft support portion 58 with respect to the base door body 56 by the float portion 54a at the upper end. It becomes a state. The height of the split door body 54 is set so that the screw or the like of the ship does not come into contact with the split door body 54 when the ship BT1 passes through. After the ship BT1 has passed, the float portion 54a of the split door body and the float body 34 fixed to the base door body cooperate to return the door body to the upright state so as to close the gate gap. On the other hand, as shown in FIG. 11, for example, when a ship BT2 (patrol boat or Japanese boat) having a width smaller than that of a dust collector passes through the passage gate device 10-3 of the present embodiment, the ship is pushed. It passes between the abutting portions 38 and abuts on the split door body 54 without abutting on the pressing portion 38. Then, as shown in FIG. 11B, only the split door body 54 is rotated around the horizontal axis of the shaft support 58 with respect to the base door body 56 and tilted as the ship advances. As a result, only a part of the door body 14 is opened as a passage gap of the ship, not the entire gate gap. In the case of FIG. 11, when the ship BT2 passes, it is preferable to operate the outboard motor so that the outboard motor is flipped up and passed so that the screw or the like of the outboard motor does not come into contact with the split door body 54. After the ship has passed, the split door body 54 returns to the upright state and closes the gap between the base door bodies. In this way, in the present embodiment, ships having different widths can be efficiently passed. The structure of the split door body is not limited to the structure of the above embodiment, and may be any structure. For example, the split door body may be provided in a plurality of split door bodies. Further, the split door body may be provided with another pressing portion projecting back and forth from the split door body.

The ship-passing gate device of the present invention described above is not limited to the configuration of only the above-described embodiment, and may be arbitrarily modified as long as it does not deviate from the essence of the present invention described in the claims. May be good.

The ship-passing gate device of the present invention is installed in a part of water-based equipment such as a flow control fence and driftwood stop equipment installed in a dam, a reservoir, or the like.

10 Ship gate device 12 Frame body 14 Door body 16 Buoyancy support mechanism 18 Guide mechanism 20 Gate gap 32 Shaft support 34 Float body 38 Pushing part 40 Contact part 42 Support frame 44 Recessed parts 50a, 50b Guide part 54 Split door body

Claims (7)

It is a passage gate device that is installed in a part of the water compartment equipment and allows ships to pass through as needed.
A frame with a gate gap through which the ship passes,
A door body that opens and closes the gate gap,
A buoyancy support mechanism that supports buoyancy so that the door body is always located on the water,
The front side of the ship around the axis that intersects the direction of travel of the ship by pushing the door body when the ship passes through the gate gap and the state where the door body is always erected on the water to close the gate gap. Includes a state in which the door body is rotated and submerged toward the door, and a guide mechanism for selectively rotating and guiding the door body.
The door body is a pressing portion that the ship comes into contact with when the ship passes, and is attached to both sides of the door body at a distance from each other in the width direction, and protrudes back and forth from the door body along the traveling direction of the ship. A ship-passing gate device characterized in that an provided pressing portion is provided. The passage according to claim 1, wherein the guide mechanism has a shaft support portion that rotatably connects the lower end of the door body in an upright state to the frame body via a horizontal axis intersecting the traveling direction of the ship. Gate device. The ship-passing gate device according to claim 1 or 2 , wherein the central portion of the door body in the width direction has recesses recessed downward from both sides in the width direction corresponding to a ship bottom structure that is convex downward. .. The pressing portion according to any one of claims 1 to 3, wherein the pressing portion includes a contact portion that comes into contact with the ship and a support frame that supports the contact portion at a separated position protruding from the door body. Passage gate device. The ship-passing gate device according to any one of claims 1 to 4, wherein the buoyancy support mechanism includes a pressing portion or a float body attached to a door body. The ship passage gate device according to any one of claims 1 to 5 , wherein the pressing portion is provided with guide portions provided at different positions in the width direction so as to correspond to different ship widths. The central part of the door body in the width direction is characterized in that a part of the door body is divided so as to be openable and closable, and a divided door part is provided so as to be swingable in the traveling direction of the ship with the upper end as a free end. The ship-passing gate device according to any one of claims 1 to 6.

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