JP7573348B1 - Floating pier mooring device - Google Patents

Abstract

To provide a mooring device for a floating pier that can be installed on water with a certain degree of planar restraint, can be easily constructed, and is less likely to be damaged even when subjected to the effects of, for example, large waves.
[Solution] The vehicle comprises a fixed part 12 fixed to the land LD side, a support arm 14 having one end pivotally supported by the fixed part 12 and rotatable in the vertical direction, and a connecting means 16 connecting the other end of the support arm 14 to a floating pier 100 so as to be rotatable in the vertical direction. The connecting means 16 may be made of a loose connecting means 32 that loosely connects the floating pier 100 to the support arm 14 so as to be swingable within a predetermined range or movable in the front-rear direction.
[Selected Figure] Figure 1

Description

The present invention relates to a mooring device for a floating pier that is buoyantly supported on water and moves up and down in accordance with the water level.

Floating piers are used in various bodies of water, such as the sea, lakes, dams, and rivers, as scaffolding for boarding and disembarking boats and ships, loading and unloading cargo, and as mooring facilities for ships. Floating piers are constructed with a floating body equipped with floats that is buoyantly supported on the water, so they can move up and down in response to changes in the water level and maintain a constant height position above the water surface, and are widely used in various facilities such as fishing ports, marinas, and docks.

Conventional floating piers include those that are moored by chains and those that are moored by piles. Chain-moored floating piers are moored via chains connected to anchors placed underwater or on the bottom of the water, allowing the floating pier to move up and down freely. On the other hand, pile-moored floating piers are moored by driving steel pipe piles into the bottom of the water, and the floating pier is moored using the steel pipe piles as guides so that it can move up and down freely (see, for example, Patent Document 1).

Japanese Utility Model Application Publication No. 62-26409

However, conventional chain-moored floating piers are moored via a freely bending chain, so they tend to float on the water and the position of the floating pier is easily displaced. In addition, while conventional pile-moored floating piers and those in Patent Document 1 can prevent dislocation on the water, they require steel pipe piles to be driven into the seabed to guide the floating pier up and down, which makes construction complicated and large-scale, and requires a lot of work, time, and cost. Also, if the seabed is soft or the water is very deep, it is difficult to drive the piles, and construction locations may be limited. Furthermore, the floating pier is subjected to forces from various directions due to the influence of waves and wind, but the floating pier has a structure with little freedom of movement, being able to move only up and down, so there is a risk that the floating pier will not be able to withstand the load and will be damaged when hit by large waves.

The present invention was made in consideration of the above-mentioned problems with the conventional technology, and one of its objectives is to provide a mooring device for a floating pier that allows the installation of the floating pier on water with some degree of planar control, is easy to install, and is less likely to be damaged, even when subjected to the effects of, for example, large waves.

In order to solve the above problems, the present invention provides a floating pier mooring device for mooring a floating pier that is buoyantly supported on water, which comprises a fixed part that is fixed to the land side, a support arm whose one end is pivotally supported by the fixed part and can rotate freely in the vertical direction, and a connecting means that connects the other end of the support arm to the floating pier so that it can rotate freely in the vertical direction, and the connecting means is composed of a floating pier mooring device that has a breaker device that separates the connection between the support arm and the floating pier when a load equal to or greater than a predetermined value is applied to the support arm or the floating pier.

The connecting means may also be a loose connecting means that loosely connects the floating pier to the support arm so that it can swing around an axis along the fore-and-aft direction within a predetermined range or move in the fore-and-aft direction so as to move closer to or farther away from the support arm. The connecting means may have a buffer means that reduces the load when the floating pier moves relative to the support arm. The breaker device may also have a buffer means.

The breaker device may also be connected to the support arm so that the floating pier can swing around an axis along the fore-and-aft direction or move forward and backward, and may have an elastic body that cushions and regulates the forward or backward movement of the floating pier relative to the support arm, and a preload adjustment mechanism that adjusts the cushioning force provided by the elastic body.

The present invention further provides a mooring device for a floating pier that is buoyantly supported on water, comprising:
The device comprises a fixed part fixed to the land side, a support arm having one end pivotally supported by the fixed part and rotatable in the vertical direction, and connecting means connecting the other end of the support arm to the floating pier so that it can rotate freely in the vertical direction. The connecting means comprises a loose connecting means that loosely connects the floating pier to the support arm so that it can swing around an axis along the fore-aft direction within a predetermined range or move toward or away from the support arm in the fore-aft direction. The connecting means has a swing restriction mechanism that restricts the swing range of the floating pier around the axis along the fore-aft direction relative to the support arm. The swing restriction mechanism is composed of a floating pier mooring device having a first roller provided on one side of either the support arm or the floating pier and pivotally supported so as to be rotatable around the pivot axis, and a first roller receiving part provided on the other side of the support arm or the floating pier, which receives the first roller from the front or rear and has a stopper part that restricts the vertical movement range of the first roller .

The connecting means may also have a left-right restriction mechanism that restricts the floating pier from moving left-right relative to the support arm while allowing it to swing freely around an axis along the front-rear direction.

The left-right restriction mechanism may also include a second roller provided on either the support arm or the floating pier, and supported for rotation via a pivot shaft facing the front-to-rear direction, and a second roller receiving part provided on the other of the support arm or the floating pier, which abuts against and receives the second roller from the left or right side.

Furthermore, the present invention provides a mooring device for a floating pier that moors a floating pier that is buoyantly supported on water, comprising a fixed part fixed to the land side, a support arm having one end pivotally supported by the fixed part and capable of rotating freely in the vertical direction, and connecting means connecting the other end of the support arm to the floating pier so that it can rotate freely in the vertical direction, the connecting means comprising a loose connecting means that loosely connects the floating pier to the support arm so that it can swing around an axis along the fore-aft direction within a predetermined range or move closer to or away from the support arm, the connecting means having a left-right restricting mechanism that restricts left-right movement of the floating pier relative to the support arm while allowing it to swing freely around an axis along the fore-aft direction, the left-right restricting mechanism comprising a second roller provided on either the support arm or the floating pier and supported rotatably via a pivot axis facing the fore-aft direction, and a second roller receiving part provided on the other of the support arm or the floating pier and abutting against and receiving the second roller from the left or right side .

The support arm may also be configured as a truss-like structure made up of multiple straight frame members arranged in a triangular shape.

The floating pier mooring device of the present invention is a floating pier mooring device for mooring a floating pier that is buoyantly supported on water, and is configured with a fixed part that is fixed to the land side, a support arm whose one end is pivotally supported by the fixed part and can rotate freely in the vertical direction, and a connecting means that connects the other end of the support arm to the floating pier so that it can rotate freely in the vertical direction. This eliminates the need for the driving of steel pipe piles, etc., as in the past, and makes construction relatively easy. Furthermore, since the support arm and floating pier can move within a somewhat restricted range when hit by large waves, etc., damage to the floating pier can be effectively prevented.

FIG. 2 is a plan view of a mooring device for a floating pier according to one embodiment of the present invention. FIG. 2 is a side view of the mooring device of the floating pier of FIG. 1. FIG. 2 is an enlarged view of the breaker device and its surroundings of the mooring device of the floating pier in FIG. 1. This is a cross-sectional view of the mooring device of the floating pier in Figure 3 along line AA. FIG. 2 is an enlarged view of the vicinity of the swing restriction mechanism of the mooring device of the floating pier of FIG. 1. This is a cross-sectional view of the mooring device of the floating pier in Figure 5 along line BB. 2 is an enlarged view of the left-right regulation mechanism and its surroundings of the mooring device of the floating pier in FIG. 1 . This is a cross-sectional view of the mooring device of the floating pier in Figure 7 along line CC. FIG. 2 is an explanatory diagram of the installation state of the mooring device of the floating pier of FIG. 1.

Below, an embodiment of the floating pier mooring device of the present invention will be described with reference to the attached drawings. The floating pier mooring device of the present invention is a mooring system for mooring a floating pier installed in a body of water such as the sea or a river so that it can move up and down in response to changes in the water level. Figures 1 to 9 show one embodiment of the floating pier mooring device of the present invention. As shown in Figures 1 and 2, the floating pier mooring device 10 of this embodiment comprises a fixed part 12 fixed to the land side, a support arm 14 pivotally supported by the fixed part 12, and a connecting means 16 that rotatably connects the support arm 14 and the floating pier 100.

In this embodiment, as shown in the figure, the horizontal direction in which the fixed part 12 approaches and moves away from the land LD is defined as the front-rear direction X, the direction away from the land is defined as the front direction, and the direction approaching the land is defined as the rear direction. The horizontal direction perpendicular to the front-rear direction X is defined as the left-right direction Y. Furthermore, the vertical height direction perpendicular to the front-rear direction X and the left-right direction Y is defined as the up-down direction Z.

In this embodiment, the floating pier 100 may be a conventional one, for example, having a metal frame 102 such as an aluminum alloy that is rectangular in plan view, a plurality of floats 104 fixed to the bottom of the frame 102, and a deck 106 that is formed by laying wooden boards or the like on the frame, and is buoyantly supported in a water area such as the ocean with at least the deck portion above the water. Fenders and mooring cleats 108 are attached to the frame 102 of the floating pier 100. The floating pier 100 is connected to a concrete anchor 112 installed on the seabed and a mooring fitting 114 on the land LD side via a mooring line 110 such as a chain or rope. The mooring fitting 114 may be fixed via a chemical anchor driven into the land LD side or the seabed, or a fixing part 12 described later. The mooring lines 110 are connected to four corners on the front and rear ends of the floating pier 110, with the two mooring lines 110 on the front side crossing each other and the two mooring lines 110 on the rear side crossing each other in a plan view. In this embodiment, the floating pier 100 is provided in a rectangular shape in a plan view that is long along the fore-and-aft direction X. The shape and size of the floating pier 100 may be arbitrary.

The fixed part 12 is fixed, for example, directly to the revetment on the land LD side or indirectly by using facilities and equipment provided on the revetment, and is a land-side support means that supports the support arm 14. In this embodiment, for example, as shown in FIG. 9, the fixed part 12 is fixed to the support leg 202 of the variable staircase 200 that connects the revetment and the floating pier 100 to allow travel between them.

As shown in Figures 1 and 2, the fixed part 12 has, for example, a fixed frame 18 attached to the support leg 202 of the variable staircase, and a fixed bracket 20 protruding forward from the front end side of the fixed frame 18. The fixed frame 18 is, for example, assembled into a rectangular frame shape that is attached to the support leg 202 of the variable staircase 200 so as to surround the outside. Straight metal frame members are placed facing each other by abutting the front and rear of the support leg 202, and the front and rear frame members are fastened to the support leg 202 with long bolts and nuts along the front-to-rear direction.

For example, two fixed brackets 20 are arranged at a predetermined distance apart in the left-right direction Y and fixed to the fixed frame 18. Each fixed bracket 20 is provided with a rotating shaft 24 that is oriented horizontally in the left-right direction Y and passes through the two opposing plate members. One end of the support arm 14 is supported by the rotating shaft 24 supported by the fixed bracket 20.

The fixing part 12 is not limited to the above structure, and may have any structure. For example, the fixing part may have a structure in which the fixing bracket 121 is directly fixed to the support leg 202, a revetment, or the like. The fixing part 12 may also be fixed, for example, directly to the top or side of the revetment, or to other port facilities, or to any other structure. The fixing part 12 may also be set at any position, either above or below the water.

The support arm 14 is a mooring means for mooring the floating pier 100, which moves up and down in accordance with the water level. The support arm 14 is formed of a rigid body such as metal, and supports the floating pier 100 so that it can move up and down while maintaining or restricting the planar position of the floating pier 100 on the water so that it does not shift significantly. As shown in Figures 1 and 2, one end of the support arm 14, which is the rear end, is connected to the fixed part 12 via the rotation shaft 22 of the fixed part 12 so that it can rotate freely in the vertical direction. Furthermore, the other end of the support arm 14, which is the front end, is connected to the floating pier 100 via a connecting means 16 so that it can rotate freely in the vertical direction.

In this embodiment, the support arm 14 has a truss-like structure formed by combining multiple straight metal frame materials in a triangular shape. For example, the support arm 14 has an outer frame formed of frame materials so that the outer contour of the support arm 14 is a trapezoidal frame when viewed from above. The frame materials are arranged inside the trapezoidal frame to form multiple triangles, and each frame material is fixed by bolts, welding, or the like. The frame materials may be connected by pins or the like to allow the frame materials to swing relative to each other.

A movable bracket 24 protruding rearward is provided on the frame material on the rear end side of the support arm 14. The movable bracket 24 is fixed, for example, to both the left and right ends of the frame material on the rear end side of the support arm 14, and is supported via a fixed shaft 22 supported by a fixed bracket 20 of the fixed part 12. A breaker bracket 26 protruding forward is fixed to the frame material on the front end side of the support frame 14. The breaker bracket 26 is an element that connects the breaker device 28 of the connecting means 16 described below, and supports a rotating shaft 30 whose axis is oriented horizontally along the left-right direction Y.

The connecting means 16 is a connecting means that connects the other end of the support arm 14 and the floating pier 100 so that they can rotate freely in the vertical direction, that is, around an axis along the left-right direction Y. In this embodiment, the connecting means 16 is a loose connecting means 32 that allows the floating pier 100 to swing left and right within a predetermined range relative to the support arm 14 (i.e., rotate around a horizontal axis along the front-back direction X) and move along the front-back direction X within a predetermined range (can move closer to or away from the land) in addition to the configuration that allows the support arm 14 and the floating pier 100 to rotate freely in the vertical direction. As a result, the connecting part between the rigid support arm 14 and the floating pier 100 is connected with a certain degree of freedom, so that when a large load is applied to the floating pier due to large waves, etc., the floating pier can be made less likely to be damaged by moving it with a relatively high degree of freedom to absorb or disperse the force to a certain extent. The loose connection means 32 may be configured to allow the floating pier 100 to either swing left and right or move forward and backward.

In this embodiment, the connecting means 16 includes a breaker device 28 that disconnects the support arm 14 and the floating pier 100 when a load greater than a predetermined value is applied, a swing restriction mechanism 34 that restricts the range of swing of the floating pier 100 around an axis along the fore-and-aft direction relative to the support arm 14, a forward restriction mechanism 36 that restricts the forward movement of the floating pier 100 at a predetermined position, a rearward restriction mechanism 38 that restricts the rearward movement of the floating pier 100 at a predetermined position, and a left-right restriction mechanism 40 that restricts the movement of the floating pier 100 in the left-right direction Y.

The breaker device 28 is a breaking means that has, for example, a breaking member 42, and separates the support arm 14 and the floating pier 100 when the floating pier 100 receives a large external force such as a large wave and a load of a predetermined level or more is applied to the floating pier 100 by breaking the breaking member 42. This prevents the floating pier 100 itself from being damaged when a large force is applied. As described above, the floating pier 100 is connected to the anchor (weight) 110 via the chain 108, so that the separated floating pier 100 is prevented from being carried away far away. As shown in Figures 3 and 4, the breaker device 28 has, for example, a first connecting member 44 whose one end is supported by the breaker bracket 26 via the rotating shaft 30, a breaking member 42 connected to the end of the first connecting member, a second connecting member 46 connected in series to the first connecting member 44 via the breaking member 42, and an outer tube 48 into which a part of the first connecting member 44 and the second connecting member 46 are fitted.

The breaking member 42 is, for example, a flat plate-shaped member provided with a constricted portion that becomes the breaking portion under high load. The first connecting member 44 is, for example, a cylindrical member, and is provided with a slit that fits the flat breaking member 42. The first connecting member 44 and the breaking member 42 are connected by a pin or the like. The second connecting member 46 is, for example, a cylindrical member similar to the first connecting member 44, and is provided with a slit that fits the flat breaking member 42. The second connecting member 46 and the breaking member 42 are connected by a pin or the like. Furthermore, the front end of the second connecting member 46 is provided with a female thread portion into which the bolt shaft 50 described below screws. The first connecting member 44, the breaking member 42, and the second connecting member 46 are connected in a straight line and arranged in the front-rear direction X.

The outer cylinder 48 is a substantially cylindrical member having an insertion hole for inserting the first connecting member 44 and the second connecting member 46 therein, allowing the first connecting member 44 and the second connecting member 46 to move in the axial direction, i.e., along the front-rear direction. The outer cylinder 48 has a step 48a at the midpoint between the front and rear, and the diameters of the front and rear parts are different. The outer cylinder 48 is fitted with a bearing 54 attached to the frame 102 of the floating pier 100 via a mounting bracket 52. The bearing 54 is fitted to the outer periphery of the rear part of the outer cylinder 48, which has a smaller diameter, and is rotatable around the axis relative to the outer cylinder 48, while the forward movement of the bearing 54 is restricted by the step 48a. A washer is arranged in front of the bearing 54, and engages with the step 48a of the outer cylinder 48 via the washer. That is, in this embodiment, the breaker device 28 also serves as the forward restriction means 36 that restricts the forward movement of the floating pier 100 at a predetermined position relative to the support arm 14. At the same time, the breaker device 28 connects the floating pier 100 to the support arm 14 so that it can swing around an axis along the fore-and-aft direction X (i.e., the axis of the outer tube 48) and can move in the fore-and-aft direction, constituting a loose connection means 32.

A bolt shaft 50 extending to the outside of the outer tube 48 along the front-rear direction X is screwed to the front end side of the second connecting member 46 of the breaker device 28. A pair of reaction plates 56 arranged facing each other at a predetermined interval in the front-rear direction are engaged with the bolt shaft 50 in a penetrating manner, and an elastic body 58 made of rubber or a spring is arranged in the opposing gap between the reaction plates 56. Furthermore, a nut 60 is screwed to the outside of the front reaction plate 56 that is penetrated by the bolt shaft 50. One reaction plate 56 is abutted against the front end of the outer tube 54, and the reaction force of the elastic body 58 can be adjusted by changing the screwing position of the nut 60 to the bolt shaft 50. With this configuration of the breaker device 28, when a force acts on the floating pier 100 to move forward relative to the support arm 14, the force and impact are buffered by the reaction force of the elastic body 58, and damage to the floating pier 100 can be prevented. In other words, the breaker device 28 can be said to be a shock-absorbing/breaking device equipped with a shock-absorbing means and a breaking means. Furthermore, the bolt shaft 50 and the nut 60 constitute a preload adjustment mechanism 62 that adjusts the shock-absorbing force of the elastic body 58, and the shock-absorbing force can be adjusted according to the installation conditions of the floating pier 100. Note that the breaker device 28 may be configured, for example, in the opposite manner to the above configuration, to be pivotally supported on the floating pier 100 side and have the elastic body 58 and the like act on the support arm 14 side, or the breaker device 28 may be configured to double as a rearward restricting mechanism. Also, a forward restricting means may be provided separately from the breaker device 28.

5 and 6, the swing restriction mechanism 34 has, for example, a first roller 64 pivotally supported by the support arm 14, and a first roller receiving part 66 provided on the floating pier 100. The first roller 64 is, for example, a rubber roller, and is arranged on both the left and right ends of the frame material on the front end side of the support arm 14. The first roller 64 is pivotally supported by a first roller bracket 68, which is fixed to the frame material on the front end side of the support arm 14 and protrudes forward, via a pivot shaft 70 having an axis arranged in the left-right direction Y. The first roller receiving part 66 is arranged on both the left and right ends of the frame 102 of the floating pier 100 in accordance with the position of the first roller 64. The first roller receiving part 66 is made of a metal fitting having an approximately U-shape, and receives the first roller 64 by abutting the first roller 64 from the front side on the inside of the U-shape. The upper and lower protruding portions of the first roller receiving portion 66 serve as stopper portions 72, which regulate the upper and lower limits of the movement of the first roller 64. As a result, when the floating pier 100 oscillates around an axis along the front-rear direction X relative to the support arm 14, the oscillation range is regulated at a position where the first roller 64 abuts against the stopper portion 72 above or below the first roller receiving portion 66. Furthermore, when the floating pier 100 attempts to move rearward relative to the support arm 14, the first roller 64 is regulated at a position where it abuts against the first roller receiving portion 66. Therefore, in this embodiment, the first roller 64 and the first roller receiving portion 66 constituting the oscillation regulating mechanism 34 also serve as the rear regulating means 38. On the other hand, when the floating pier 100 tries to move forward relative to the support arm 14, the first roller 64 and the first roller receiving part 66 will be slightly separated, but it is preferable to adjust the forward regulating means 36 as described above so that the first roller 64 does not completely come off the first roller receiving part 66. By providing the swinging restriction mechanism 34, for example, when a person moves or works on the floating pier 100, the floating pier can be prevented from swinging excessively, and the floating pier can be used safely. The swinging restriction mechanism 34 is not limited to the above configuration and may be any configuration. For example, the swinging restriction mechanism 34 may be configured in the opposite way to the above, with the first roller 64 provided on the floating pier 100 side and the first roller receiving part 66 provided on the support arm 14 side. A rear restriction means 38 may be provided separately from the swinging restriction mechanism 34.

7 and 8, the left-right restriction mechanism 40 includes, for example, a second roller 74 rotatably supported by the support arm 14 and a second roller receiving portion 76 provided on the floating pier 100. Two second rollers 74 are arranged in line symmetry at a predetermined interval on the frame material on the front end side of the support arm 14. The second roller 74 is rotatably supported by a second roller bracket 78 fixed to the frame material of the support arm 14 and protruding forward via a rotation shaft 80 having an axis arranged in a direction along the front-rear direction X. That is, the rotation shaft 78 of the second roller 74 is set in a horizontal direction perpendicular to the rotation shaft of the first roller 66. The second rollers 74 are arranged facing each other outward. The second roller receiving portion 76 abuts against the second roller 74 from the left side or the right side and receives it. For example, the surface of the second roller receiving portion 76 that receives the second roller 74 is formed as a vertical plane. Since the second roller receiving portion 76 is in contact with the outer left and right sides of each of the two second rollers 74, the movement of the floating pier 100 in the left-right direction Y is restricted. Furthermore, even in this restricted state, the floating pier 100 is allowed to sway smoothly around an axis along the front-rear direction X by the second rollers 74. Note that the left-right restriction mechanism 40 is not limited to the above-mentioned configuration and may have any configuration. For example, the left-right restriction mechanism 40 may be configured in the opposite manner to the above, with the second roller 74 provided on the floating pier 100 side and the second roller receiving portion 76 provided on the support arm 14 side.

Next, the operation of the floating pier mooring device 10 according to this embodiment will be explained with reference to the drawings. The floating pier mooring device 10 according to this embodiment is installed, for example, alongside a marina (not shown) in a harbor or the like that stores small boats and medium-sized ships, and is used when boarding and disembarking ships, etc. As shown in FIG. 9, a variable staircase 200 is installed from the quay of the land LD towards the floating pier 100, and travel between the land and the floating pier can be made via the variable staircase 200. The floating pier 100 is moored via the support arm 14 so that it can rotate freely in the vertical direction, and can therefore move up and down in response to changes in the sea level WL due to the tides. In addition, the support arm 14 and the floating pier 100 can swing around an axis along the front-rear direction X relative to the support arm 14, i.e., around a horizontal axis perpendicular to the rotation axis of the support arm 14 and the floating pier 100, and can move slightly in the front-rear direction X, due to the loose connection means 32. Therefore, the degree of freedom of the connection part is relatively high, and even if a relatively large external force is applied due to waves, etc., the load and stress on the support arm 14 and the floating pier 100 is reduced. In addition, when the floating pier 100 moves up and down, it can move slightly in the front-rear direction X due to the rotation of the support arm 14, but movement in the left-right direction Y is restricted, so the planar position on the water surface relative to facilities such as marinas is restricted, and it can be used stably. At the same time, the swing range is restricted by the swing restriction mechanism 34, so users can use the floating pier 100 stably and safely.

Furthermore, when a force acts on the support arm 14 to move the floating pier 100 in the forward/rearward direction X, the elastic body 58 of the breaker device 28 can cushion the force and reduce the load. The preload of the elastic body 58 can be adjusted to adjust the cushioning force according to the installation environment, such as a port. Furthermore, when a large external force is applied to the support arm 14 or the floating pier 100 due to large waves caused by a typhoon, for example, the breaker device 28 can separate the connection between the support arm 14 and the floating pier 100 to prevent damage to the floating pier 100 and other equipment. The floating pier 100 separated by the breaker device 28 is moored by a mooring line 110 such as a chain, so that the floating pier 100 can be prevented from being swept offshore or colliding with other equipment or ships and causing damage.

The floating pier mooring device of the present invention described above is not limited to the configuration of the above embodiment, and any modification may be made without departing from the essence of the present invention as described in the claims.

The floating pier mooring device of the present invention can be used, for example, to moor floating piers installed in any body of water, such as the sea or a river.

REFERENCE SIGNS LIST 10 Floating pier mooring device 12 Fixed portion 14 Support arm 16 Connection means 28 Breaker device 32 Loose connection means 34 Swing restriction mechanism 40 Left-right restriction mechanism 58 Elastic body 62 Preload adjustment mechanism 64 First roller 66 First roller receiving portion 72 Stopper portion 74 Second roller 76 Second roller receiving portion 100 Floating pier

Claims (8)

A mooring device for a floating pier that is buoyantly supported on water, comprising:
A fixed part that is fixed to the land side;
a support arm whose one end is pivotally supported by the fixed portion and which is rotatable in the vertical direction;
a connecting means for connecting the other end of the support arm and the floating pier so as to be rotatable in the vertical direction;
A mooring device for a floating pier, wherein the connecting means has a breaker device that separates the connection between the support arm and the floating pier when a load equal to or greater than a predetermined value is applied to the support arm or the floating pier. The floating pier mooring device according to claim 1, characterized in that the connecting means comprises a loose connecting means that loosely connects the floating pier to the support arm so that it can swing around an axis along the fore-and-aft direction within a predetermined range or move toward or away from the support arm in the fore-and-aft direction. The breaker device is connected to the floating pier so as to be swingable around an axis along a front-rear direction or movable back and forth relative to the support arm,
An elastic body that cushions and restricts the forward or backward movement of the floating pier relative to the support arm;
3. The mooring device for a floating pier according to claim 1 or 2, further comprising a preload adjustment mechanism for adjusting the cushioning force provided by the elastic body. A mooring device for a floating pier that is buoyantly supported on water, comprising:
A fixed part that is fixed to the land side;
a support arm whose one end is pivotally supported by the fixed portion and which is rotatable in the vertical direction;
a connecting means for connecting the other end of the support arm and the floating pier so as to be rotatable in the vertical direction;
The connecting means is a loose connecting means that loosely connects the floating pier to the support arm so that the floating pier can swing around an axis along the front-rear direction within a predetermined range or can move in the front-rear direction so as to approach or move away from the support arm,
The connecting means has a swing restriction mechanism that restricts the swing range of the floating pier relative to the support arm around an axis along the front-rear direction,
The swing restriction mechanism includes a first roller that is provided on one side of the support arm or the floating pier and is supported rotatably around a rotation axis;
A mooring device for a floating pier, characterized in having a first roller receiving portion provided on either the support arm or the other side of the floating pier, which receives the first roller from the front or rear and has a stopper portion that regulates the vertical movement range of the first roller . The mooring device for a floating pier according to claim 4, characterized in that the connecting means has a left-right restriction mechanism that restricts the floating pier from moving left-right relative to the support arm while allowing it to swing freely around an axis along the front-rear direction. The left-right restriction mechanism is provided on either the support arm or the floating pier, and includes a second roller rotatably supported via a pivot shaft extending in the front-rear direction;
6. A mooring device for a floating pier as claimed in claim 5 , further comprising a second roller receiving portion provided on either the support arm or the floating pier and adapted to abut against and receive the second roller from the left or right side. A mooring device for a floating pier that is buoyantly supported on water, comprising:
A fixed part that is fixed to the land side;
a support arm whose one end is pivotally supported by the fixed portion and which is rotatable in the vertical direction;
a connecting means for connecting the other end of the support arm and the floating pier so as to be rotatable in the vertical direction;
The connecting means is a loose connecting means that loosely connects the floating pier to the support arm so that the floating pier can swing around an axis along the front-rear direction within a predetermined range or can move in the front-rear direction so as to approach or move away from the support arm,
The connecting means has a left-right restricting mechanism that restricts the movement of the floating pier in the left-right direction relative to the support arm while allowing the floating pier to swing freely around an axis along the front-rear direction,
The left-right restriction mechanism is provided on either the support arm or the floating pier, and includes a second roller rotatably supported via a pivot shaft extending in the front-rear direction;
A mooring device for a floating pier, comprising: a second roller support portion provided on either the support arm or the floating pier, and abutting against and receiving the second roller from the left or right side . The mooring device for a floating pier according to any one of claims 1, 2, 4, 5, 6 and 7, characterized in that the support arm is provided in a truss-like structure formed by combining multiple straight frame members in a triangular shape.

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