Navigation gate device

Abstract

To provide a navigation gate device that allows ships to pass smoothly without the need to lift an outboard motor above the water and without damaging the outboard motor or a gate facility.SOLUTION: A navigation gate device comprises: a frame body 12 which has a gate gap 20 through which a ship passes; a door body 14 which opens and closes the gate gap, a lower end of which is attached to the frame body 12 so as to be swingable via a swing shaft, and which is pushed by a ship when the ship passes to tilt to open the gate gap 20; and a buoyant body 16 which is attached to the door body 14 and which buoyantly supports the door body 14 so that it is in an upright state to close the gate gap 20. The door body 14 is provided with gap forming means 18 which forms a gap in a part of the door body 14 when the door body tilts in response to a passage of the ship.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a boat passage gate device that is provided on a water flow control fence or driftwood retention facility installed in a dam, a reservoir, a river, etc. [Background technology]

[0002] Dams and reservoirs may be equipped with flow control fences to block the flow of surface water for the purpose of preventing eutrophication and preserving the water environment, and driftwood stoppers to block driftwood and garbage from upstream and prevent them from flowing downstream. Passage gates are installed at designated locations on the flow control fences and driftwood stoppers to allow dust collection ships and surveillance ships to pass through. Passage gates are usually closed, and the doors are opened when a ship passes through and closed again after the ship has passed.

[0003] Various types of ship passage gates have been proposed in the past, such as types in which the gate body opens and closes in a single-wing or double-door style, types that open and close by sliding up and down along a rail, and push-down types in which the gate body is pushed down by the ship to open and close (see, for example, Patent Document 1).

[0004] Furthermore, in the ship pass for a watertight fence described in Patent Document 1, the ship pass installed on the watertight fence has a watertight fence sheet and a gate body connected to the belt line at the upper end of the watertight fence sheet, and when a ship or the like is passing through, the gate body is pushed by the ship or the like, and the gate body 7 tips over in the direction of travel of the ship or the like, centered around the upper end of the main belt, allowing the ship or the like to pass over the gate body. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2003-328343 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in conventional ship passing gates in which the gate body falls over to allow ships to pass through as in Patent Document 1, when a ship passes through the gate, the outboard motor, such as a screw that protrudes below the bottom of the ship, may hit the gate and damage the water impermeable fence, outboard motor, etc. Therefore, when a ship passes through, it is necessary to lift the outboard motor, etc., which is a complicated and dangerous operation.

[0007] The present invention has been made in consideration of the above-mentioned problems in the conventional art, and one of its objects is to provide a ship passage gate device that does not require the outboard motor to be lifted above the water and allows ships to pass smoothly without damaging the outboard motor or the gate facilities. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention comprises a ship passing gate device comprising a frame body having a gate gap through which a ship passes, a door body for opening and closing the gate gap, the door body being swingably attached to the frame body via a swing shaft at its lower end and tilting when pushed by a ship when the ship passes to open the gate gap, and a buoyant body attached to the door body for buoyant support so that the door body is in an upright position to close the gate gap, the door body being provided with a gap forming means for forming a gap in a part of the door body when the door body tilts in response to the passage of a ship.

[0009] In addition, the door body may be divided into a first door element that is the door main body, and a second door element that opens and closes the gap forming position when tilting, and the gap forming means may have a differential mechanism that tilts the second door element at an angle larger than the tilt angle of the first door element when the door body tilts.

[0010] The door body may be divided into three parts, with the second door member formed in the center in the width direction and the first door members formed on both the left and right sides of the first door member.

[0011] The differential mechanism may also have a first swing shaft for swingably supporting the first door member on the frame body, a second swing shaft arranged above the first swing shaft for swingably supporting the second door member on the frame body, and an interlocking mechanism for tilting the first door member and the second door member in conjunction with each other when a boat comes into contact with the abutment portion of the first door member or the second door member, thereby forming the gap.

[0012] Also, the gate may have guide sections arranged opposite to each other on the left and right sides to guide the direction of travel of the ship passing through the gate gap.

[0013] The guide portion may be provided so that the width of the opposing gap is adjustable.

[0014] In addition, the door body may be provided with a pressing portion against which the ship abuts when the ship passes, and the pressing portion is arranged to be swingable about a horizontal axis in the direction of the ship's travel, and a locking device may be provided which locks the door body in a closed state and releases the lock in response to the swinging of the pressing portion about the horizontal axis when the ship passes, thereby allowing the door body to be opened and closed.

[0015] The locking device may also have a pressing portion of the door body, a locking member provided on the frame body side so as to be able to swing up and down, a lock receiving portion fixed to the door body side and receiving and engaging the locking member from below, and a conversion mechanism that swings the locking member upward as the pressing portion rotates about the horizontal axis, thereby disengaging it from the lock receiving portion. Effect of the Invention

[0016] According to the ship passing gate device of the present invention, there is provided a frame body having a gate gap through which a ship can pass, and a door body for opening and closing the gate gap, the door body being swingably attached to the frame body at its lower end via a swing shaft and tilting when pushed by a ship when the ship passes to open the gate gap, and a buoyant body attached to the door body for buoyancy support so that the door body is in an upright state in which it closes the gate gap, and the door body is provided with a gap forming means for forming a gap in a part of the door body when the door body tilts in response to the passage of a ship and for closing the gap when the door body is in the upright state, so there is no need to raise the outboard motor above the water, and ships can pass through safely and smoothly without damaging the outboard motor or the gate facilities. [Brief description of the drawings]

[0017] [Figure 1] 1 is a front view of a vessel gate apparatus according to a first embodiment of the present invention. FIG. [Diagram 2] FIG. 2 is an explanatory cross-sectional view of the vessel passage gate device of FIG. 1 taken along line AA. [Diagram 3] FIG. 3 is an explanatory diagram of a state in which the gate body of the vessel passage gate device of FIG. 2 is tilted. [Figure 4] FIG. 2 is a perspective view of the vessel gate device of FIG. 1. [Diagram 5] FIG. 2 is an explanatory diagram of the operation of the vessel passage gate device of FIG. [Figure 6] FIG. 2 is a schematic diagram of a water flow control fence equipped with the vessel passage gate device of FIG. 1. [Figure 7] FIG. 6 is a front view of a vessel gate apparatus according to a second embodiment of the present invention. [Figure 8] 8A is an enlarged view of the periphery of a locking device of the vessel passage gate apparatus of FIG. 7, and FIG. 8B is an explanatory plan view of the periphery of the locking device. [Figure 9] FIG. 9 is a cross-sectional view of the main part of the vessel passage gate device of FIG. 8 taken along line BB. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the through gate device of the present invention will be described with reference to the attached drawings. The through gate device of the present invention is a gate device for passing ships, which is installed in a part of a water partition facility such as a water flow control fence or oil fence for blocking the flow of water on the surface side of a dam or a reservoir, or a driftwood stopper facility for preventing driftwood and garbage from flowing in from the upstream side, and allows ships to pass as necessary. Figures 1 to 6 show a first embodiment of the through gate device of the present invention. As shown in Figures 1, 2, and 3, the through gate device 10 of this embodiment includes a frame body 12 having a gate gap through which a ship BT passes, a gate body 14 for opening and closing the gate gap, and a buoyant body 16 installed on the gate body 14. Furthermore, the gate body 14 of the through gate device 10 is provided with a gap forming means 18.

[0019] The vessel gate device 10 of this embodiment is described as an example installed at the middle position of a flow control fence 100 installed in a water area W such as a dam, as shown in FIG. 6. The flow control fence 100 is, for example, a conventionally known one, and is supported on the water by a float such as polystyrene foam attached to the upper end of a waterproof sheet made of a waterproof material such as polyester, tarpaulin, or a composite material thereof, and a weight made of a metal chain is attached to the lower end of the waterproof sheet, which is stretched from the water surface to a certain water depth. The flow control fence 100 is fixed to concrete anchor blocks 102 fixed to land at both ends in the longitudinal direction, and is installed to divide the surface side of the water area of ​​the dam, and is designed to dam the flow of water on the surface side of the dam. The vessel gate device 10 is installed in a part of the flow control fence 100.

[0020] The frame 12 is a gate frame that is connected to the middle part of the water flow control fence 100, etc., and forms a gate gap 20 through which a ship can pass. As shown in Figs. 1, 2, and 4, in this embodiment, the frame 12 is provided by assembling a frame made of a metal square tube, such as rust-proof plated steel or stainless steel, and is formed in a substantially U-shape with an open upper side when viewed from the front, and the substantially rectangular gap in the center is the gate gap 20. The gate gap 20 of the frame 12 is set to a width and depth that allows a ship to pass through. Floats 22 for buoyantly supporting the frame 12 above the water are attached to both the left and right outer sides of the frame 12.

[0021] In this embodiment, the floats 22 that buoyantly support the frame body 12 are assembled to the frame body 12 via float support frames 26 that are long in the forward and backward directions along the traveling direction X of the ship and cross the support arms 24 that protrude laterally outward on both the left and right sides from the frame body 12. The floats 22 are made of a material with a large buoyancy effect, such as foamed resin, and are provided in a predetermined size and shape designed for a predetermined buoyancy. The floats 22 are attached to the front and rear ends of the left and right float support frames 26, respectively. Thus, in this embodiment, a total of four floats 22 arranged on both the left and right sides of the frame body 12 and at the front and rear positions sandwiching the frame body 12 work together to buoyantly support the frame body 12 on the water in a stable upright position with approximately the lower half submerged in water and approximately the upper half exposed above the water surface WL.

[0022] Reinforcing triangular frames 28 are fixed to the left and right sides of the frame 12. A waterproof sheet made of the same material as the waterproof sheet of the water flow control fence 100 is stretched around the outer periphery of the frame 12 on both sides in the width direction and on the lower side.

[0023] The door body 14 is an opening / closing door that closes the gate gap 20 of the frame body 12 in an openable / closable manner. As shown in Figs. 1, 2, 3, and 4, the door body 14 is provided with a lower end side thereof swingably attached to the frame body 12 via a horizontal swing axis intersecting the traveling direction of the ship. Thus, the door body 14 is normally in an upright state to close the gate gap 20, and when a ship passes through, the door body 14 is pushed in the traveling direction by the ship to tilt around the swing axis on the lower end side to open the gate gap 20, which is a so-called push-down type structure. In this embodiment, the door body 14 is divided into a first door portion 30 and a second door portion 32 as described later, and is configured to form a gap G in a part of the door body 14 via a gap forming means 18 when the door body 14 tilts.

[0024] In this embodiment, the door body 14 is provided with two first door sections 30 forming door main body sections on both left and right sides, and a second door section 32 is provided in the center between the two first door sections 30. As shown in Figs. 1 and 4, each first door section 30 has an outer frame formed of, for example, a rectangular metal frame, and a waterproof sheet is stretched over it. A ladder-shaped reinforcement frame is attached to the lower side inside the frame of the first door section 30. The first door section 30 is attached to the frame body 12 via a first swing shaft 34 in the horizontal direction intersecting with the traveling direction of the ship at its lower end so as to be freely swingable around a horizontal axis. The first swing shaft 34 is fixed to the lower ends of the two first door sections 30 on both the left and right sides with one swing shaft, and serves as a common shaft. The first swing shaft 34 has both ends supported by frame bodies erected on both the left and right sides of the frame body 12, and is supported by penetrating a pair of shaft support plates 36 erected at the widthwise intermediate position of the lower frame of the frame body 12. The first swing shaft 34 is not limited to the common shaft configuration as described above, and may be attached separately to the first door portions 30 on the left and right sides.

[0025] As shown in Figs. 1, 2 and 4, the first door section 30 is provided with a pressing section 38 against which a ship abuts when the ship passes through. The pressing section 38 is provided on the front and rear surfaces of the first door section 30, for example, at the inner side of the two first door sections 30 on the left and right, adjacent to the second door section 32 in the center. In this embodiment, the pressing section 38 includes an elastic body made of rubber or the like that is vertically installed over the entire length of a protruding section 40 that protrudes upward from the outer frame of the first door section 30 and up to the middle position of the vertical part of the outer frame of the first door section 30. The pressing section 38 is provided so as to protrude in a substantially semicircular shape from the door surface of the first door section 30. The protruding section 40 to which the upper half of the pressing section 38 is attached is, for example, integrally formed of the same metal frame as the outer frame of the first door section.

[0026] A buoyant body 16 is installed on the first door section 30 to buoyantly support the first door section 30 in an upright position and close the gate gap 20. The buoyant body 16 is made of a material with a large buoyancy effect, such as foamed resin, and is formed in a bale shape. The buoyant body 16 is supported by a support rod 42 installed at the vertical middle position of the first door section 30, penetrating it laterally.

[0027] As shown in Figs. 1, 2, 3, and 4, the second door section 32 is a split door body section that opens and closes the space between the two first door sections 30 on the left and right. For example, the outer frame is formed of a metal frame in the shape of a vertically long rectangular frame, and a waterproof sheet is stretched over it. Specifically, the frame constituting the outer frame of the second door section 32 is made of a channel material with a substantially U-shaped cross section, and is assembled with the opening of the channel material facing outward. Therefore, a linear long groove is formed on the outer periphery of the second door section 32. The second door section 30 is attached to the frame body 12 via a second swing shaft 44 in the horizontal direction that intersects with the traveling direction of the ship at the lower end side so as to be freely swingable around the horizontal axis. The second swing shaft is disposed above the first swing shaft 34 of the first door section 30, parallel to the first swing shaft 34, and supported by the pivot plate 36. Since the second swing shaft 44 is disposed at a position above the first swing shaft 34, the second door section 32 swings with a smaller rotation radius than the first door section 30. When the second door section 32 is pushed by a boat and tilts as the boat passes, it tilts at an angle different from that of the first door section 30, forming a gap G between the second door section 32 and the first door section 30 that can serve as a passage space for the boat's outboard motor.

[0028] A buoyant body 16 is installed on the second door section 32 to buoyantly support the second door section 32 in an upright position and close the gate gap 20. The buoyant body 16 is made of a material with a large buoyancy effect, such as foamed resin, similar to the first door section 30, and is formed in a bale shape. The buoyant body 16 is supported by a support rod 42 installed at the middle position between the top and bottom of the second door section 32, penetrating it in the horizontal direction.

[0029] A guide roller 46 for smoothly abutting the bow of the ship without damaging it is supported freely rolling about a horizontal axis at the upper end of the second door section 32. The guide roller 46 is made of polyvinyl chloride resin foam, for example, and the roller rotation shaft is supported by a shaft support part protruding upward from the outer frame of the second door section 32.

[0030] The buoyant bodies 16 installed in the first door section 30 and the second door section 32 respectively buoyantly support the gate body 14 consisting of the first door section 30 and the second door section 32 so that it is in an upright state that normally closes the gate gap, and after the gate body 14 tilts when a ship passes and opens the gate gap 20, the buoyant body returns the gate body 14 to an upright state and closes the gate gap. In other words, the buoyant body 16 can be said to be a closing and holding means for the gate body 14 that functions as a means for holding the gate body 14 in an upright state by buoyancy and a means for returning the tilted gate body 14 to an upright state by buoyancy after the ship passes. As a result, the gate body 14 automatically opens and closes the gate gap 20 when a ship passes.

[0031] The gap forming means 18 is a gap forming means for outboard motor passage that forms a gap G (gap) in a portion of the door body that allows the outboard motor of the boat to pass when the door body tilts in response to the passage of a boat. Since the outboard motor of the boat protrudes below the bottom of the boat, if the door body 14 is formed only on the same surface, there is a risk that the outboard motor will come into contact with the door body 14. In this embodiment, by providing the gap forming means 18 in the door body 14, it is possible to provide a gap G that allows the outboard motor of the boat to pass when the door body tilts as the boat passes through. As a result, there is no need to lift the outboard motor when the boat passes through the gate, and the boat can pass through safely and smoothly.

[0032] 2 and 3, in this embodiment, the gap forming means 18 tilts the divided door sections (30, 32) at different angles when tilting them, thereby forming a gap G between the divided door sections (30, 32) through which an outboard motor such as a ship's screw can pass. In detail, the gap forming means 18 has a configuration in which the door body 14 is divided into the first door section 30 and the second door section 32 as described above, and has a differential mechanism 48 that tilts the second door member 32 at a tilt angle (rotation angle β from an upright position) larger than the tilt angle (rotation angle α from an upright position) of the first door member 30 when the door body 14 (the first door section 30 and the second door section 32) tilts, thereby forming a gap G in the two door sections 34 of the door body 14. In this embodiment, the differential mechanism 48 has a first swing shaft 34 of the first door section 30 and a second swing shaft 44 of the second door section 32 that are vertically shifted from each other, and has an interlocking mechanism 50 that interlocks the tilting operation of the first door section 30 with the tilting operation of the second door section 32. That is, the differential mechanism 48 has the first swing shaft 34, the second swing shaft 44 that is disposed above the first swing shaft 34, and the interlocking mechanism 50.

[0033] As shown in Figs. 1 and 4, the interlocking mechanism 50 has, for example, an engagement piece 52 fixed to the lower side of the outer frame of the first door section 30 and projecting laterally toward the outer frame of the second door section 32, and a slider 53 slidably accommodated in the long groove of the second door section 32. The engagement piece 52 of the first door section 30 is fixed to the slider 53 inserted into the long groove of the outer frame of the second door section 34, and is engaged with the long groove of the second door section 34 via the slider 53 so as to be relatively slidable along the long groove of the second door section 34. The engagement piece 52 of the first door section 30 engages with the long groove at a position above the second rotation shaft 44 of the second door section 34. As a result, when a ship passes, the ship hits the pressing part 38 of the first door section 30 to tilt the first door section 30, and at the same time, the engagement piece 52 and the slider 53 interlock with each other to tilt the second door section 32. At this time, the swing axes of the first door section 30 and the second door section 32 are vertically misaligned, and the slider 53 linked to the engagement piece 52 slides relative to the second door section 32, causing the second door section 32 to tilt at a larger angle than the first door section 30 and to precede the first door section 30, forming a gap G that allows the boat's outboard motor to pass through. After the boat has passed, the buoyant bodies 16 of the first door section 30 and the second door section 32 return them to an upright state, and the gap G in the door body 14 is closed.

[0034] The gap forming means 18 may be any configuration that tilts the second door element 32 at an angle greater than the tilt angle of the first door element 30, thereby forming a gap G in the second door portion 34 of the door body 14, and may be, for example, a structure having a link mechanism, a cam mechanism, etc.

[0035] Further, in this embodiment, as shown in Figs. 1, 2 and 4, guide parts 54 for guiding the traveling direction of the ship passing through the gate gap 20 are provided at the front and rear of the frame body 12. The guide parts 54 are arranged on the left and right of the gate gap 20 in a front view, facing each other with a gap corresponding to the width of the ship. The guide parts 54 are provided, for example, in the form of elongated rods arranged substantially horizontally along the front-rear direction, which is the passing direction of the ship, and an elastic body such as rubber is attached to them. The guide parts 54 are supported by guide support members 56 fixed to the front and rear end positions of the float support frame 26 via position adjustment means 58, respectively, and the opposing guide parts 54 are arranged parallel to each other. The guide support member 56 has, for example, two parallel straight pipe members fixed at one end side to the float support frame 26, and the guide parts 54 are supported at the tip side of the straight pipe members.

[0036] The position adjustment means 58 for fixing the guide support member 56 to the float support frame 26 includes, for example, a clamping plate for clamping the straight pipe member from above and below, and a bolt and nut for fastening the clamping plate. The guide support member 56 is slid in the width direction with the bolt and nut loosened to a certain extent, so that the opposing gap of the guide portion 54 can be adjusted. The guide portion 54 is fixed in a positioned state by fastening and fixing the bolt and nut of the position adjustment means 58 at a position where the opposing gap of the guide portion 54 is set. For example, the width of the opposing gap of the guide portion 54 may be adjusted in advance to match the width of the ship when the vessel passage gate device 10 is installed on the water together with the flow control fence 100. Note that the guide portion 54 may be structured to adjust the opposing gap of the guide portion 54 in any other configuration, such as a configuration in which the guide support member 58 is configured to be expandable and the opposing gap is adjusted by expanding and contracting the guide support member 56.

[0037] Next, the operation of the vessel gate device 10 according to this embodiment will be described with reference to Fig. 5. In the vessel gate device 10, as shown in Fig. 5(a), the first and second door sections 30 and 32 are normally held upright by the buoyancy of the buoyant bodies 16 of the first and second door sections 30 and 34 constituting the door body 14, and the gate gap 20 of the frame body 12 is closed. For example, when a vessel such as a dust collecting vessel passes through, the vessel advances while being guided by the gate gap 20, i.e., the door body 14, via the guide section 54. Then, as shown in Fig. 5(b), the vessel abuts against the pressing section 38 on the upper side of the first door section 30, and the propulsive force of the vessel pushes down the first door section 30, causing it to swing and tilt around the horizontal axis of the first swing shaft 34. In conjunction with the tilting of the first door section 30, the differential mechanism 56 of the gap forming means 18 tilts the second door section 32 at a tilt angle β greater than the tilt angle α of the first door section 30. As a result, a gap G is formed between the first door sections 30, i.e., at the position of the second door section 32, in the door body 14. When the ship advances through the gate gap, as shown in FIG. 5(c), the second door section 32 swings in an approximately sideways manner at a water depth position sufficiently deeper than the screw of the outboard motor in conjunction with the increase in the tilt angle of the first door section 30 as the ship advances while pushing the pressing part 38 with the bottom of the ship, forming a gap G between the first door sections 30 through which the outboard motor of the ship can pass without the screw hitting the door body 14. As a result, it is not necessary to lift up the outboard motor every time the ship passes, and the ship can pass safely without damaging the door body or the outboard motor. After the ship passes through the gate, it passes through while being guided by the guide section 54. After the ship has completely passed through, the first door section 30 and the second door section 32 automatically return to an upright position as shown in Fig. 5(a) due to the buoyancy action of the buoyant bodies 16 of the first door section 30 and the second door section 32, closing the gate gap 20 of the frame body 12. When a ship passes through the ship passing gate device 10 from the opposite direction, the first door section 30 and the second door section 32 open and close on the opposite side symmetrically to the above.

[0038] Next, a second embodiment of the vessel gate device of the present invention will be described with reference to Figures 7, 8, and 9. The same configurations and members as those of the first embodiment described above are given the same reference numerals, and detailed descriptions thereof will be omitted. As in the above embodiment, the vessel gate device 10-2 of this embodiment includes a frame body 12, a door body 14, and a buoyant body 16, and the door body 14 is further provided with a gap forming means 18.

[0039] In this embodiment, in addition to the above configuration, a locking device 60 is provided that locks the gate body 14 in a closed state and unlocks the gate body when a ship passes, allowing the gate body to be opened and closed. This makes it possible to prevent the gate body 14 from tilting and opening the gate gap when a ship is not passing.

[0040] As shown in Figures 7, 8 and 9, in this embodiment, the locking device 60 has, for example, a pressing portion 38a provided on the first door portion 30 so as to be swingable about a horizontal axis, a locking member 62 provided on the frame body 12 side so as to be swingable in the vertical direction, a lock receiving portion 64 fixed to the first door portion 30 side and receiving and engaging the locking member 62 from below, and a conversion mechanism 66 that swings the locking member 62 upwards as the pressing portion 38a swings about the horizontal axis, thereby disengaging it from the lock receiving portion 64.

[0041] In this embodiment, the pressing portion 38a is fixed, for example, to a straight rod member 71 which is a separate member from the outer frame of the first door portion 30, and its lower end is fixed to a horizontal shaft 70 which is supported by a pivot support portion 68 fixed to the upper end of the outer frame and extends in a direction intersecting the traveling direction X of the ship, and is provided so as to be swingable back and forth. The pressing portion 38a is biased by a biasing member 72 such as a coil spring so as to return to an upright state, and when the ship presses against it, it swings forward, and after the ship has passed, it is returned by a biasing member 74.

[0042] The locking member 62 is, for example, an elongated strip-like member that is swingable with one end as a free end, and has a swing shaft fixed to its base side with its axis facing in the fore-and-aft direction along the direction of travel of the ship, and the swing shaft is pivoted to a bearing fixed to the upper end of the frame 12. One end of the locking member 62 extends above the first door section 30, and is engaged with a lock receiving section 64 of the first door section 30.

[0043] The lock receiving portion 64 is, for example, a substantially T-shaped plate member having an open recess 64a at the upper end side to receive the locking member 62. The lock receiving portion 64 has an inclined portion 64b at the front and rear protruding portions of the substantially T-shape. When the locking member 62 moves upward, the lock receiving portion 62 disengages from the lock receiving portion 64 and the locked state is released. In this released state, the first door section 30 tilts as the ship advances, but when the first door section 30 returns to an upright state after the ship has passed, the locking member 62 is guided along the inclined portion 64b of the lock receiving portion 64, and then falls again into the opening 64a and is engaged to enter the locked state.

[0044] The conversion mechanism 66 is a conversion mechanism that converts the rotational movement of the pressing portion 38a about the horizontal axis into an upward swinging movement of the free end side of the locking member 62. The conversion mechanism 66 includes, for example, a horizontal axis 70 of the pressing portion 38a, two pin portions 74 provided on the other end side of the horizontal axis 70 from the pressing portion 38a, and a seesaw member 76 that is supported to be swingable with its base side abutting against the pin portions 74 and its tip side abutting against the tip of the locking member 62.

[0045] Two pin portions 74 are provided at a predetermined interval in the longitudinal direction along the traveling direction of the ship, and protrude laterally in parallel with the horizontal shaft 70. When the horizontal shaft 70 rotates about its axis in accordance with the swinging of the pressing portion 38a, one of the two pin portions 74 moves downward, thereby pressing the base side of the seesaw member 76 downward.

[0046] The seesaw member 76 has a swing shaft on the base side pivoted to a pivot support fixed to the upper end of the outer frame of the first door section 30, and is provided so as to be swingable up and down on the free end side. The seesaw member 76 swings its free end side upward when the base side is pushed downward by a pin section 74 provided at the end of the horizontal shaft 70. As the seesaw member 76 swings upward, the locking member 62 swings upward, causing the locking member 62 to disengage from the lock receiving section 64 and release the lock.

[0047] The conversion mechanism 66 may be configured, for example, so that two pins 74 are engaged with the ends of the locking member 62, and the locking member 64 is swung upward by the upward rotation of either of the pins 74 accompanying the rotation about the horizontal shaft 70. The locking device 60 may also be configured in any manner.

[0048] In this embodiment, the same effects as those of the above embodiment can be achieved, and the locking device 60 ensures that the gate body is always closed and that water flow can be controlled reliably. In particular, since the lock can be automatically released by simply pressing the gate against the pressing portion as the ship advances, even a ship gate equipped with a locking device is easy to use and allows ships to pass through smoothly.

[0049] The above-described vessel gate device of the present invention is not limited to the configuration of the above-described embodiment, and any modification may be made without departing from the essence of the present invention as described in the claims. [Industrial Applicability]

[0050] The ship passage gate device of the present invention is installed in a part of water facilities such as a water flow control fence or driftwood stopper installed in a dam or a reservoir. [Explanation of symbols]

[0051] 10. Ship gate equipment 12 Frame 14 Door body 16 Buoyancy body 18 Gap forming means 20 Gate gap 30 First Door 32 Second Door Section 34 First swing axis 38, 38a Pressing part 44 Second Oscillating Axis 48 Differential mechanism 50 Interlocking mechanism 54 Guide part 58 Position adjustment means 60 Locking device 62 Locking member 64 Lock receiving part 66 Conversion Mechanism

Claims

1. A frame having a gate gap through which a ship passes; a door body for opening and closing the gate gap, the lower end side of which is swingably attached to a frame body via a swing shaft, and the door body is pushed by a ship when the ship passes through and tilts to open the gate gap; a buoyant body that is installed on the gate body and buoyantly supports the gate body so that the gate body is in an upright state to close the gate gap; A vessel passage gate device, comprising: a gate body provided with gap forming means for forming a gap in a portion of the gate body when the gate body tilts in response to the passage of a ship.

2. The door body is divided into a first door element that is a door main body, and a second door element that opens and closes the gap forming position when tilted.

2. The vessel gate apparatus according to claim 1, wherein the gap forming means has a differential mechanism for tilting the second door member at an angle larger than the tilt angle of the first door member when the door body is tilted.

3. 3. The vessel gate device according to claim 2, wherein the door body is divided into three parts, with a second door member formed at a central position in the width direction and first door members formed on both the left and right sides of the first door member.

4. The differential mechanism includes a first swing shaft that pivotally supports the first door member on the frame body so that the first door member can swing; a second swing shaft disposed above the first swing shaft and supporting the second door member on the frame so as to be swingable; 4. The vessel gate device according to claim 2 or 3, further comprising an interlocking mechanism for interlocking the first door element and the second door element with each other to tilt the first door element and the second door element, respectively, to form the gap, when the vessel abuts against the first door element or the second door element.

5. 2. The vessel passage gate device according to claim 1, further comprising guide portions disposed opposite to each other on the left and right sides so as to guide the direction of travel of a vessel passing through the gate gap.

6. 6. The vessel passage gate apparatus according to claim 5, wherein the guide portion is provided so that a width of a gap between the guide portions can be adjusted.

7. The gate body is provided with a pressing portion against which the ship comes into contact when the ship passes, and the pressing portion is provided so as to be swingable about a horizontal axis in the direction of travel of the ship, 2. The vessel passage gate apparatus according to claim 1, further comprising a locking device which locks the gate body in a closed state and unlocks the gate body in response to the swinging of the pressing part about the horizontal axis when a ship passes, thereby enabling the gate body to be opened or closed.

8. The locking device includes a pressing portion of the door body and A locking member provided on the frame body side so as to be swingable in the up and down direction; A lock receiving portion that is fixed to the door body side and receives and locks the locking member from below; 8. The vessel passage gate apparatus according to claim 7, further comprising a conversion mechanism for swinging the lock member upward in response to the swinging of the pressing portion about the horizontal axis, thereby disengaging the lock member from the lock receiving portion.

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