Boat 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 ship passage gate device provided in a flowing water control fence, a driftwood stopper facility, etc. installed in a dam, a reservoir, a river, etc.

Background Art

[0002] In dams, reservoirs, etc., there are cases where a flowing water control fence for blocking the flow of water on the surface side for the purpose of preventing eutrophication and conserving the water environment, a driftwood stopper facility for blocking driftwood, garbage, etc. flowing from upstream and preventing them from flowing downstream, etc. are installed. At a predetermined position of the flowing water control fence, the driftwood stopper facility, etc., a ship passage gate is provided so that a dust collection ship or a monitoring ship can pass through. The ship passage gate is usually closed, and when a ship passes through, the door is opened, and after the ship has passed, it is closed again.

[0003] Conventional ship passage gates include, for example, types in which the door body opens and closes in a single-opening or double-opening manner, types in which it opens and closes by sliding up and down along a rail, push-down types in which the door body is pushed down by a ship and opens and closes, etc. (see, for example, Patent Document 1).

[0004] In addition, in the ship passage for a water-blocking fence in Patent Document 1, the ship passage provided in the water-blocking fence has a water-blocking fence sheet and a door body connected to the belt line at the upper end of the water-blocking fence sheet. When a ship passes through, by pushing the door body with a ship or the like, the door body 7 falls forward in the direction of travel of the ship or the like around the vicinity of the upper end of the main belt, and a proposal has been made in which a ship or the like passes over the door body.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in conventional through gates of the type where the gate body tilts to allow a ship to pass through, such as in Patent Document 1, there was a risk that the outboard motor, such as the propeller, which protrudes below the bottom of the ship, would hit the gate as the ship passed through, potentially damaging the waterproof fence or the outboard motor. Therefore, it was necessary to raise the outboard motor upwards when the ship passed through, which was a cumbersome and dangerous operation.

[0007] This invention has been made in view of the above-mentioned conventional problems, and one of its objectives is to provide a boat gate device that allows boats to pass through smoothly without the need to lift the outboard motor out of the water and without damaging the outboard motor or gate facilities. [Means for solving the problem]

[0008] To solve the above problems, the present invention provides a frame having a gate gap through which a ship passes, and a door body for opening and closing the gate gap, wherein the lower end of the door body is pivotably provided on the frame via a pivot shaft and tilts when pushed by the ship as the ship passes, thereby opening the gate gap. The gate body is provided with a buoyancy body that is installed on the gate body and provides buoyancy support so that the gate body is in an upright position that closes the gate gap, and the gate body is provided with a gap-forming means that creates a gap in a part of the gate body when the gate body tilts in response to the passage of a ship. The door body is divided into a first door member which forms the main body of the door, and a second door member which opens and closes the position where a gap is formed when the door is tilted. The gap-forming means has a differential mechanism which tilts the second door member at an angle greater than the tilt angle of the first door member when the door body is tilted. It consists of a boat gate device.

[0009] Furthermore, the door body may have a three-part structure in which a second door member is formed at the center in the width direction, and first door members are formed on both the left and right sides of the first door member.

[0010] Furthermore, the differential mechanism may include a first pivot shaft that pivotally supports the first door member on the frame, a second pivot shaft positioned above the first pivot shaft and pivotally supports the second door member on the frame, and an interlocking mechanism that, when the ship comes into contact with the pressing portion of the first door member or the second door member, causes the first door member and the second door member to move in conjunction with each other to tilt and form the gap.

[0011] Also, The present invention comprises a frame having a gate gap through which a ship passes, a door body for opening and closing the gate gap, the door body being pivotably mounted on the frame at its lower end via a pivot shaft and tilting when pushed by a ship passing through to open the gate gap, and a buoyancy body installed on the door body to support the door body so that it is in an upright position closing the gate gap, the door body being provided with a gap-forming means that forms a gap in a part of the door body when the door body tilts in response to the passage of a ship. It has guide sections positioned opposite each other on the left and right to guide the direction of travel of a ship passing through the gate gap. The guide section consists of a towing gate device that is equipped to allow adjustment of the opposing gap width. .

[0012] Also, The present invention comprises a frame having a gate gap through which a ship passes, a door body for opening and closing the gate gap, the door body being pivotably mounted on the frame at its lower end via a pivot shaft and tilting when pushed by a ship passing through to open the gate gap, and a buoyancy body installed on the door body to support the door body so that it is in an upright position closing the gate gap, the door body being provided with a gap-forming means that forms a gap in a part of the door body when the door body tilts in response to the passage of a ship. The gate is equipped with a contact portion that the ship will contact when passing through, and the contact portion is provided so as to be able to swing around a horizontal axis in the direction of the ship's movement. The gate is equipped with a locking device that locks the gate in the closed position and releases the lock in response to the swinging of the contact portion around the horizontal axis when a ship passes through, allowing the gate to be opened and closed.

[0013] The locking device may also include a pressing portion for the door body, a locking member provided on the frame side so as to be able to swing vertically, a locking receiving portion fixed to the door body side and receiving and locking the locking member from below, and a conversion mechanism that swings the locking member upward in accordance with the swinging of the pressing portion around its horizontal axis, thereby disengaging it from the locking receiving portion.

[0014] Furthermore, the system may have guide sections positioned opposite each other on the left and right sides to guide the direction of travel of a ship passing through the gate gap. [Effects of the Invention]

[0015] The present invention provides a gate device for passing ships, comprising a frame having a gate gap through which ships pass, a door body that opens and closes the gate gap, the door body being pivotably mounted on the frame at its lower end via a pivot shaft and tilted by being pushed by a ship when a ship passes, thereby opening the gate gap, and a buoyancy body installed on the door body that provides buoyancy support so that the door body is in an upright state that closes the gate gap, and the door body is provided with a gap-forming means that forms a gap in a part of the door body when the door body tilts in response to the passage of a ship, and closes the gap when the door body is in an upright state. As such, there is no need to lift the outboard motor out of the water, and ships can pass through safely and smoothly without damaging the outboard motor or the gate facility. [Brief explanation of the drawing]

[0016] [Figure 1] Front view of the ship passage gate device according to the first embodiment of the present invention. [Figure 2] Cross-sectional explanatory view taken along line A-A of the ship passage gate device of FIG. 1. [Figure 3] Explanatory view of the state where the door body of the ship passage gate device of FIG. 2 is tilted. [Figure 4] Perspective view of the ship passage gate device of FIG. 1. [[ID=!3]] [Figure 5] Operation explanatory view of the ship passage gate device of FIG. 1. [Figure 6] Schematic view of the flowing water control fence in which the ship passage gate device of FIG. is installed. [Figure 7] Front view of the ship passage gate device according to the second embodiment of the present invention. [ [Figure 8] (a) is an enlarged view around the locking device of the ship passage gate device of FIG. 7, and (b) is a planar explanatory view around the locking device. [Figure 9] Principal part explanatory view of the cross section taken along line B-B of the ship passage gate device of FIG. 8.

Mode for Carrying Out the Invention

[0017] Embodiments of the ship passage gate device of the present invention will be described below with reference to the accompanying drawings. The ship passage gate device according to the present invention is provided, for example, as part of water surface partitioning equipment such as a flowing water control fence or an oil fence for blocking the flow of water on the surface side, and a driftwood stop facility for preventing driftwood and garbage flowing from the upstream side from flowing into, in a dam, a reservoir, etc. It is a gate device for ship passage that allows ships to pass through as needed. FIGS. 1 to 6 show a first embodiment of the ship passage gate device of the present invention. As shown in FIGS. 1, 2, and 3, the ship passage gate device 10 according to the present embodiment includes a frame body 12 having a gate gap through which a ship BT passes, a door body 14 that opens and closes the gate gap, and a buoyancy body 16 installed on the door body 14. Further, an air gap forming means 18 is provided on the door body 14 of the ship passage gate device 10.

[0018] The boat gate device 10 of this embodiment will be described in the example shown in Figure 6, for example, as being installed at an intermediate position on a water flow control fence 100 installed in a water body W such as a dam. The water flow control fence 100 is, for example, a conventional one, and is supported by buoyancy on the water by attaching a float body such as expanded polystyrene to the upper end of a water-impermeable sheet made of a water-impermeable 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 water-impermeable sheet, and is stretched from the water surface to a certain water depth. The water flow control fence 100 is fixed at both ends in the longitudinal direction to concrete anchor blocks 102 fixed to the land and is installed to partition the surface side of the dam's water body, and is designed to block the flow of water on the surface side of the dam. The boat gate device 10 is provided on a part of the water flow control fence 100.

[0019] The frame 12 is a gate frame connected to the intermediate portion of the water flow control fence 100, etc., and forms a gate gap 20 through which a ship passes. As shown in Figures 1, 2, and 4, in this embodiment, the frame 12 is provided by assembling a frame made of metal square tubes such as steel or stainless steel with rust-preventive plating, etc., and is formed in a roughly U-shape with the top open when viewed from the front, with a roughly rectangular gap in the central part being the gate gap 20. The gate gap 20 of the frame 12 is set to a width and depth that a ship can pass through. Floats 22 are attached to both the left and right outer sides of the frame 12 to provide buoyancy support for the frame 12 in the water.

[0020] In this embodiment, the floats 22 that provide buoyancy support to the frame 12 are assembled to the frame 12 via float support frames 26 that are long and positioned along the ship's direction of travel X, intersecting support arms 24 that project laterally outward from the frame 12 on both the left and right sides. The floats 22 are made of a material with high buoyancy, such as foamed resin, and are provided in a predetermined size and shape designed to provide a predetermined buoyancy. The floats 22 are attached to the front and rear ends of the left and right float support frames 26, respectively. Therefore, in this embodiment, a total of four floats 22, positioned on both the left and right sides of the frame 12 and in front and rear positions flanking the frame 12, work together to provide buoyancy support to 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.

[0021] Triangular frames 28 for reinforcement are fixed to both the left and right sides of the frame 12. A water-impermeable sheet made of the same material as the water-impermeable sheet of the water flow control fence 100 is stretched over the outer perimeter of both sides in the width direction and the lower side of the frame 12.

[0022] The door body 14 is an opening and closing door that can open and close the gate gap 20 of the frame body 12. As shown in Figures 1, 2, 3, and 4, the door body 14 is pivotably mounted on the frame body 12 at its lower end via a lateral pivot axis that intersects the direction of the ship's movement. Therefore, the door body 14 normally closes the gate gap 20 in an upright position, and when a ship passes through, it is pushed in the direction of travel by the ship, tilting around the pivot axis at its lower end to open the gate gap 20, thus having a so-called push-down structure. In this embodiment, the door body 14 is divided into a first door section 30 and a second door section 32, as described later, and is configured to form a gap G in a part of the door body 14 when it tilts via a gap-forming means 18.

[0023] In this embodiment, the door body 14 is provided with two first door sections 30 that form the door body on both the left and right sides, and a second door section 32 is provided in the center, sandwiched between the two first door sections 30. As shown in Figures 1 and 4, each first door section 30 has an outer frame formed by, for example, a rectangular metal frame, and a waterproof sheet is stretched over it. The lower side of the inside of the frame of the first door section 30 is fitted with a ladder-like reinforcing frame. The first door section 30 is attached to the frame body 12 so as to be able to swing around the horizontal axis via a first pivot shaft 34 that is lateral and intersects the direction of the ship's movement at its lower end. The first pivot shaft 34 is a single pivot shaft that is fixed to the lower ends of the two first door sections 30 on both the left and right sides, forming a common axis. The first pivot shaft 34 is supported at both ends by frames erected on both the left and right sides of the frame 12, and is also supported by passing through a pair of pivot plates 36 erected at the midpoint of the width direction of the lower frame of the frame 12. The first pivot shaft 34 is not limited to the common shaft configuration described above, but may also be attached separately to the left and right first door sections 30.

[0024] As shown in Figures 1, 2, and 4, the first door section 30 is provided with a contact section 38 that a ship will come into contact with when passing through. The contact section 38 is provided, for example, on the front and rear surfaces of the first door section 30 at positions adjacent to the second door section 32 in the central part, at opposing inner positions of the two left and right first door sections 30. In this embodiment, the contact section 38 includes an elastic body made of rubber or the like, which is installed vertically to the midpoint of the vertical portion of the outer frame of the first door section 30, and the entire length of a protruding portion 40 that protrudes upward from the outer frame of the first door section 30. The contact 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 portion 40 to which the upper half of the contact section 38 is attached is, for example, integrally formed from the same metal frame as the outer frame of the first door section.

[0025] The first door section 30 is equipped with a buoyancy body 16 that provides buoyancy support to keep the first door section 30 upright and close the gate gap 20. The buoyancy body 16 is made of a material with a large buoyant effect, such as foamed resin, and is formed in a barrel shape. It is supported by a support rod 42 that is installed at an intermediate position between the upper and lower parts of the first door section 30, with the support rod passing through it laterally.

[0026] As shown in Figures 1, 2, 3, and 4, the second door section 32 is a divided door body that opens and closes the space between the two left and right first door sections 30. For example, the outer frame is formed of a vertically elongated rectangular metal 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 channel material with a roughly U-shaped cross-section, and the opening of the channel material is assembled facing outwards. Therefore, a straight, elongated groove is formed on the outer circumference of the second door section 32. 32 The second door section 32 is attached to the frame 12 so as to be able to swing around a horizontal axis via a second horizontal pivot shaft 44 that intersects the direction of travel of the ship on its lower end. The second pivot shaft is positioned above the first pivot shaft 34 of the first door section 30, is positioned parallel to the first pivot shaft 34, and is supported by a pivot plate 36. Due to the configuration in which the second pivot shaft 44 is positioned above the first pivot shaft 34, the second door section 32 swings with a smaller radius of rotation than the first door section 30. When the second door section 32 is pushed by the ship and tilts as the ship passes, it tilts at a different angle than the first door section 30, forming a gap G between it and the first door section 30 that can serve as a passage space for the ship's outboard motor.

[0027] The second door section 32 is equipped with a buoyancy body 16 that provides buoyancy support to keep the second door section 32 upright and close the gate gap 20. The buoyancy body 16, like the first door section 30, is made of a material with a large buoyant effect, such as foamed resin, and is formed in a barrel shape. It is supported by a support rod 42 that is installed at an intermediate position between the upper and lower parts of the second door section 32, with the support rod passing through it laterally.

[0028] At the upper end of the second door section 32, a guide roller 46 is pivotally supported so as to be able to roll around a horizontal axis, allowing for smooth contact with the bow of the ship without damaging it. The guide roller 46 is made of, for example, a foamed polyvinyl chloride resin, and its rotation axis is pivotally supported by a pivot point that protrudes above the outer frame of the second door section 32.

[0029] The buoyancy bodies 16 installed in the first door section 30 and the second door section 32 described above are: 1The door body 14, which consists of a door section 30 and a second door section 32, is normally supported by buoyancy to remain in an upright position that closes the gate gap. When a ship passes, the door body 14 tilts, opening the gate gap 20, and then buoyancy returns the door body 14 to an upright position, closing the gate gap. In other words, the buoyancy body 16 can be described as a means of holding the door body 14 in an upright position by buoyancy, and a means of returning the tilted door body 14 to an upright position again by buoyancy after a ship has passed. As a result, the gate gap 20 is automatically opened and closed when a ship passes through the door body 14.

[0030] The gap-forming means 18 is a means for forming a gap for outboard motor passage, which forms a gap G (gap) in a part of the door body that allows the outboard motor of the ship to pass through when the door body tilts in response to the passage of a ship. Since the outboard motor of a ship protrudes below the bottom of the ship, if the door body 14 is formed only on one surface, there is a risk that the outboard motor will come into contact with the door body 14. In this embodiment, by having the gap-forming means 18 in the door body 14, when the door body tilts during the passage of a ship, a gap G can be provided that allows the outboard motor of the ship to pass through. As a result, there is no need to bounce the outboard motor up when the ship passes through the gate, and it can pass through safely and smoothly.

[0031] As shown in Figures 2 and 3, in this embodiment, the gap-forming means 18 tilts the divided door sections (30, 32) at different angles, thereby forming a gap G between the divided door sections (30, 32) that allows an outboard motor such as a ship's propeller to pass through. In detail, the gap-forming means 18 has a configuration in which the door body 14 is divided into a first door section 30 and a second door section 32 as described above, and when the door body 14 (first door section 30 and second door section 32) tilts, the second door member 32 is tilted at a larger tilt angle (rotation angle β from the upright position) than the tilt angle (rotation angle α from the upright position) of the first door member 30, and the gap-forming means 18 The Door section 2 32The differential mechanism 48 forms a gap G in the portion. In this embodiment, the differential mechanism 48 sets the first pivot shaft 34 of the first door portion 30 and the second pivot shaft 44 of the second door portion 32 to be vertically offset in position, and also has an interlocking mechanism 50 that links the tilting motion of the first door portion 30 to the tilting motion of the second door portion 32. That is, the differential mechanism 48 has a first pivot shaft 34, a second pivot shaft 44 positioned above the first pivot shaft 34, and an interlocking mechanism 50.

[0032] As shown in Figures 1 and 4, the interlocking mechanism 50 includes, for example, an engaging element 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 housed in the long groove of the second door section 32. The engaging element 52 of the first door section 30 is attached to the second door section 32 It is fixed to a slider 53 inserted into the long groove of the outer frame, and the second door section is connected via the slider 53. 32 The engaging element 52 of the first door section 30 is engaged in a manner that allows it to slide relative to the long groove of the second door section 32 The second Oscillation The long groove is engaged at a position above the shaft 44. As a result, when a ship passes, the ship hits the pressing portion 38 of the first door section 30, causing the first door section 30 to tilt, and at the same time, the second door section 32 is tilted in conjunction with the engaging element 52 and the slider 53. At this time, the pivot axes of the first door section 30 and the second door section 32 are misaligned vertically, and the slider 53 linked to the engaging element 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 ahead of the first door section 30, forming a gap G that allows the ship's outboard motor to pass through. After the ship has passed, the buoyancy bodies 16 of the first door section 30 and the second door section 32 return to an upright position, closing the gap G in the door section 14.

[0033] Furthermore, the gap-forming means 18 tilts the second door member 32 at an angle greater than the tilt angle of the first door member 30, and the door body 14 The Door section 2 32 Any configuration that forms a gap G in the portion is acceptable, and for example, it may be a structure having a link mechanism or a cam mechanism.

[0034] Furthermore, in this embodiment, as shown in Figures 1, 2, and 4, guide sections 54 that guide the direction of travel of the ship passing through the gate gap 20 are provided at the front and rear of the frame 12. The guide sections 54 are positioned opposite each other on the left and right sides of the gate gap 20 in a front view, with a gap corresponding to the width of the ship. The guide sections 54 are, for example, provided in the shape of elongated rods positioned horizontally along the longitudinal direction which is the direction of travel of the ship, and are fitted with an elastic material such as rubber. The guide sections 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, and opposing guide sections 54 are positioned parallel to each other. The guide support member 56 has, for example, two parallel straight pipe members with one end fixed to the float support frame 26, and the guide sections 54 are supported on the tip side of the straight pipe members.

[0035] The position adjustment means 58 for fixing the guide support member 56 to the float support frame 26 includes, for example, a clamping plate that clamps the straight pipe member from above and below, and a bolt and nut for fastening the clamping plate. By sliding the guide support member 56 in the width direction with the bolt and nut loosened to some extent, the opposing gap of the guide section 54 can be adjusted. By fastening and fixing the bolt and nut of the position adjustment means 58 at the set position of the opposing gap of the guide section 54, the guide section 54 is fixed in the positioned state. For example, the width of the opposing gap of the guide section 54 should be adjusted in advance to match the width of the ship when installing the boat gate device 10 on the water together with the flow control fence 100. Note that the guide section 54 is, for example, a guide support member 56 The structure may be configured to adjust the gap between the guides by extending or retracting the guide support member 56, or by any other arbitrary configuration.

[0036] Next, the operation of the boat gate device 10 according to this embodiment will be described with reference to Figure 5. Normally, the boat gate device 10 consists of a first door section 30 and a second door section that constitute the gate body 14, as shown in Figure 5(a). 32Due to the buoyancy of the buoyancy body 16, the first door section 30 and the second door section 32 are held upright, closing the gate gap 20 of the frame 12. For example, when a vessel such as a dust collector passes through, the vessel is guided through the guide section 54 to the gate gap 20, i.e., the door section 14. Then, as shown in Figure 5(b), the vessel comes into contact with the upper pressing section 38 of the first door section 30, and the propulsion force of the vessel pushes down the first door section 30, causing it to swing and tilt around the horizontal axis of the first pivot shaft 34. In conjunction with the tilting motion of the first door section 30, void The differential mechanism 56 of the forming means 18 causes the second door section 32 to tilt at a tilt angle β that is greater than the tilt angle α of the first door section 30. As a result, a gap G is created in the door body 14 between the first door sections 30, i.e., at the position of the second door section 32. As the ship moves further through the gate gap, as shown in Figure 5(c), the bottom of the ship pushes against the pressing section 38 as it moves, and in conjunction with the increasing tilt angle of the first door section 30, the second door section 32 swings in a nearly sideways position at a water depth sufficiently deeper than the outboard motor's propeller, etc., creating a gap G between the first door sections 30 that allows the ship's outboard motor to pass through, so that the propeller, etc., does not hit the door body 14. As a result, there is no need to lift the outboard motor each time the ship passes through, and the ship can pass through safely without damaging the door body or the outboard motor. After the ship has passed through the gate, it passes through while being guided by the guide section 54. After the ship has completely passed, the buoyancy of the buoyancy bodies 16 of the first door section 30 and the second door section 32 automatically returns to an upright position, as shown in Figure 5(a), closing the gate gap 20 of the frame 12. Also, when a ship passes through the passage 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.

[0037] Next, a second embodiment of the boat gate device of the present invention will be described with reference to Figures 7, 8, and 9. The same components and parts as in the first embodiment described above are denoted by the same reference numerals, and their detailed descriptions are omitted. Similar to the above embodiment, the boat gate device 10-2 of this embodiment comprises a frame 12, a gate body 14, and a buoyancy body 16, and further comprises the gate body 14, void A forming means 18 is provided.

[0038] In this embodiment, in addition to the above configuration, a locking device 60 is provided that locks the door body 14 in the closed position and releases the lock when a ship passes, allowing the door body to be opened and closed. This prevents the door body 14 from tilting and opening the gate gap when no ship is passing.

[0039] As shown in Figures 7, 8, and 9, in this embodiment, the locking device 60 includes, for example, a pressing portion 38a that is pivotably mounted on the first door portion 30 around a horizontal axis, a locking member 62 that is pivotably mounted on the frame 12 side in the vertical direction, a locking receiving portion 64 fixed to the first door portion 30 side and receiving and locking the locking member 62 from below, and a conversion mechanism 66 that causes the locking member 62 to swing upward in accordance with the pivoting of the pressing portion 38a around the horizontal axis, thereby disengaging it from the locking receiving portion 64.

[0040] In this embodiment, the pressing portion 38a is fixed 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 that is supported by a pivot 68 fixed to the upper end of the outer frame and extends in a direction intersecting the ship's direction of travel X, and is provided to swing back and forth. The pressing portion 38a is biased by a biasing member 72 such as a coil spring to return to an upright position, swings forward when a ship presses against it, and after the ship passes, the biasing member 72 It is designed to return to the previous state.

[0041] The locking member 62 is, for example, a slender, strip-shaped member that can swing with one end as a free end. A pivot shaft is fixed to the base side, with its axis oriented in the front-rear direction along the ship's direction of travel, and this pivot shaft is pivotally supported by 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 locked into the locking receiving section 64 of the first door section 30.

[0042] The lock receiving portion 64 is provided, for example, from a substantially T-shaped plate-like member, which has a recess 64a opening on its upper end to receive the locking member 62. The lock receiving portion 64 has inclined portions 64b on the front and rear protruding parts of the substantially T-shape. When the locking member 62 moves upward, the lock component 62 detaches from the locking receiver 64 and the lock is released. In this released state, the first door section 30 tilts as the ship moves, but when the first door section 30 returns to an upright position after the ship has passed, the locking member 62 is guided along the inclined portion 64b of the locking receiver 64, and then again recess It falls onto 64a, becomes locked, and enters a locked state.

[0043] The conversion mechanism 66 is a conversion mechanism that converts the rotational movement of the pressing portion 38a around its 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 of the horizontal axis 70 away from the pressing portion 38a, and a seesaw member 76 that is supported so as to be swingable, with its base side in contact with the pin portions 74 and its tip side in contact with the tip of the locking member 62.

[0044] Two pin portions 74 are provided at a predetermined distance apart in the front-rear direction along the ship's direction of travel, and they protrude laterally parallel to the horizontal axis 70. As the horizontal axis 70 rotates around its axis due to the swinging of the pressing portion 38a, one of the two pin portions 74 moves downward, thereby pushing the base side of the seesaw member 76 downward.

[0045] The seesaw member 76 is pivotally supported at its base on a pivot point fixed to the upper end of the outer frame of the first door section 30, and is provided to swing freely in the vertical direction at its free end. The seesaw member 76 swings upward at its free end due to a downward pushing action at its base by a pin portion 74 provided at the end of the horizontal shaft 70. This upward swing of the seesaw member 76 causes the locking member 62 to swing upward, disengaging it from the locking receiver 64 and releasing the lock.

[0046] The conversion mechanism 66 engages, for example, two pin portions 74 with the ends of the locking member 62, and the locking member is activated by the upward rotation of either pin portion 74 accompanying rotation around the horizontal axis 70. 62 The configuration may also be such that it swings upward. The locking device 60 may also have any configuration.

[0047] In this embodiment, the same effects and advantages as in the above embodiment can be achieved, and the locking device 60 ensures that the gate body is reliably closed at all times, thereby ensuring reliable water flow control. In particular, since the lock can be automatically released simply by pressing the ship against the contact point as the ship moves, even a toll gate equipped with a locking device is easy to use and allows ships to pass through smoothly.

[0048] The towing gate device of the present invention described above is not limited to the configuration of the embodiments described above, and any modifications may be made without departing from the essence of the present invention as described in the claims. [Industrial applicability]

[0049] The boat gate device of the present invention is installed, for example, as part of a water feature such as a water flow control fence or driftwood barrier installed in a dam or reservoir. [Explanation of Symbols]

[0050] 10. Passenger gate device 12 Frame 14 Door Body 16 Buoyancy devices 18 Gap forming means 20 Gate gap 30 First Door Section 32 Second Door Section 34. First pivot axis 38, 38a Pressing part 44 Second pivot axis 48 Differential mechanism 50 Interlocking mechanism 54 Guide section 58 Position adjustment means 60 Locking device 62 Locking member 64 Locking 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 of which is pivotably mounted on the frame via a pivot shaft, and the door body tilts when pushed by a ship as the ship passes, thereby opening the gate gap. It comprises a buoyancy body installed on the door body and providing buoyancy support so that the door body is in an upright position that closes the gate gap, The door body is provided with a gap-forming means that creates a gap in a part of the door body when the door body tilts in response to the passage of a ship. The door is divided into a first door member, which forms the main body of the door, and a second door member, which opens and closes the gap formation position when the door is tilted. A towing gate device characterized in that the gap-forming means has a differential mechanism that tilts the second door member at an angle greater than the tilt angle of the first door member when the door body tilts.

2. The boat gate device according to claim 1, characterized in that the gate body has a three-part configuration in which a second gate member is formed at the center in the width direction, and first gate members are formed on both the left and right sides of the first gate member.

3. The differential mechanism includes a first pivot shaft that pivotally supports the first door member on the frame, A second pivot shaft is positioned above the first pivot shaft and pivotally supports the second door member in the frame, The ship gate device according to claim 1 or 2, characterized in that it has an interlocking mechanism that, when a ship comes into contact with the first door member or the second door member, causes the first door member and the second door member to move in conjunction with each other to tilt and form the gap.

4. A frame having a gate gap through which a ship passes, A door body for opening and closing the gate gap, the lower end of which is pivotably mounted on the frame via a pivot shaft, and the door body tilts when pushed by a ship as the ship passes, thereby opening the gate gap. It comprises a buoyancy body installed on the door body and providing buoyancy support so that the door body is in an upright position that closes the gate gap, The door body is provided with a gap-forming means that creates a gap in a part of the door body when the door body tilts in response to the passage of a ship. It has guide sections positioned opposite each other on the left and right to guide the direction of travel of a ship passing through the gate gap, A towing gate device characterized in that the guide section is provided in a manner that allows for adjustment of the gap width between opposing sections.

5. A frame having a gate gap through which a ship passes, A door body for opening and closing the gate gap, the lower end of which is pivotably mounted on the frame via a pivot shaft, and the door body tilts when pushed by a ship as the ship passes, thereby opening the gate gap. It comprises a buoyancy body installed on the door body and providing buoyancy support so that the door body is in an upright position that closes the gate gap, The door body is provided with a gap-forming means that creates a gap in a part of the door body when the door body tilts in response to the passage of a ship. The door body is provided with a contact section that the ship will contact when passing through, and the contact section is provided so as to be able to swing around a horizontal axis in the direction of the ship's movement. A through gate device characterized by having a locking device that locks the gate body in a closed position and releases the lock in response to the lateral oscillation of the pressing part when a ship passes through, thereby allowing the gate body to be opened and closed.

6. The locking device consists of a part that presses against the door body, A locking member is provided on the frame side so as to be able to swing vertically, A lock receiving part that is fixed to the door body and receives and locks the locking member from below, The towing gate device according to claim 5, characterized by having a conversion mechanism that causes the locking member to swing upward in accordance with the swinging of the pressing portion around the horizontal axis, thereby detaching it from the locking receiving portion.

7. A ship passage gate device according to any one of claims 1, 2, 5, or 6, characterized in that it has guide sections arranged opposite each other on the left and right sides to guide the direction of travel of a ship passing through the gate gap.

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