JP7008991B1 - Connecting structure of connecting bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure which operates stably for a long period of time in a connecting bridge connecting a one-sided water object and another side water object located on the water. SOLUTION: This is a connecting structure 4 of a connecting bridge 1 connecting a one-sided floating object 7 located on the water and another side floating object 2. The connecting bridge is arranged on the one-sided floating object and is expandable and contractible. A bridge body 20, a telescopic actuator 30 that expands and contracts the bridge body, a vertical actuator 17 that rotates the bridge body in the vertical direction, a horizontal actuator 70 that rotates the bridge body in the horizontal direction, and an arrangement at the tip of the bridge body. It has a tip engaging portion 26 to be engaged, and an engaged portion 60 that engages with the tip engaging portion is disposed on the other side horizontal object, and the connecting structure engages the tip engaging portion. It has a structure in which the portions are freely connected to each other, and the connecting structure is a magnetic connection structure or a shape connection structure. [Selection diagram] FIG. 6

Description

The present invention relates to a connecting structure of connecting bridges.

For example, Patent Document 1 describes a fixed base fixed to a ship deck by driving a pair of holding pieces in a step device with a cylinder in a connecting bridge bridged between a pier and a ship berthed. Disclose the mechanical connection structure that sandwiches.

Japanese Patent Application Laid-Open No. 2003-026083

In the connection structure of Patent Document 1, since the drive structure of the holding piece is a cylinder that operates mechanically, the mechanical connection structure malfunctions due to corrosion and rust generated by long-term exposure outdoors. Occur.

Therefore, an object of the present invention is to provide a connecting structure that operates stably for a long period of time in a connecting bridge that connects one side water object and another side water object located on the water.

In order to solve the above problems, the connecting structure of the connecting bridge according to one aspect of the present invention is
It is a connecting structure of a connecting bridge that connects one-sided and other-sided water objects located on the water.
The connecting bridge is arranged on the one-sided horizontal object, and has a stretchable bridge body, a telescopic actuator that expands and contracts the bridge body, a vertical actuator that rotates the bridge body in a vertical direction, and the bridge. It has a horizontal actuator that rotates the body in the horizontal direction and a tip engaging portion that is connected via a universal joint at the tip of the bridge body.
The other side water object is provided with an engaged portion that engages with the tip engaging portion.
The connecting structure has a structure in which the tip engaging portion is detachably connected to the engaged portion.
The connection structure is characterized by being a magnetic connection structure or a shape connection structure.

According to the present invention, since the connecting structure of the connecting bridge does not have a mechanical connecting structure, stable operation over a long period of time is possible.

It is a figure explaining the connecting bridge which connects the one-sided water object and the other-side water object which concerns on this invention. It is a figure explaining the expansion and contraction of the connecting bridge shown in FIG. 1 and the rotation in a vertical direction. It is a figure explaining the horizontal rotation of the connecting bridge shown in FIG. 1. It is a figure which shows the extension state of the connecting bridge shown in FIG. It is a figure which shows the shortened state of the connecting bridge shown in FIG. It is a figure explaining the connection structure of the connecting bridge which concerns on 1st Embodiment. It is a side view which shows the engaged part in the connection structure of a connecting bridge. It is a top view of the engaged part shown in FIG. 7. It is a top view which shows the tip engagement part in the connection structure of a connecting bridge. It is a side view of the tip engaging portion shown in FIG. It is sectional drawing of the part circled in FIG. It is a figure explaining the connection structure of the connecting bridge which concerns on 2nd Embodiment.

Hereinafter, an embodiment of the connecting structure 4 of the connecting bridge 1 connecting the one-side floating object 7 located on the water and the other-side floating object 2 according to the present invention will be described with reference to the drawings.

[Overall structure]
The overall structure of the one-side floating object 7, the other-side floating object 2, and the connecting bridge 1 will be described with reference to FIGS. 1 to 5. FIG. 1 is a diagram illustrating a connecting bridge 1 connecting a water object 7 on one side and a water object 2 on the other side according to the present invention. FIG. 2 is a diagram illustrating expansion and contraction of the connecting bridge 1 shown in FIG. 1 and rotation in the vertical direction. FIG. 3 is a diagram illustrating the horizontal rotation of the connecting bridge 1 shown in FIG. 1. FIG. 4 is a diagram showing a stretched state of the connecting bridge 1 shown in FIG. FIG. 5 is a diagram showing a shortened state of the connecting bridge 1 shown in FIG.

In FIG. 1, the one-side floating object 7 is a structure located on the water, for example, a wind power generation facility 7 located on the ocean. The wind power generation facility 7 includes a foundation support 8 landed on the seabed SB, a nacelle (not shown) attached to the upper part of the foundation support, a blade (not shown) attached to the nacelle, and a platform 9. It is a tower-type structure equipped with. The platform 9 is a landing or the like temporarily used by workers who perform inspection and maintenance work. The wind power generation facility 7 is a floating body that is not fixed to the seabed SB but is floated on the ocean and moored by an anchor, in addition to the fixed type that is fixed to the seabed SB using a pile foundation as shown in FIG. It may be.

In FIG. 1, the other side floating object 2 is a floating object located on the water, for example, a work vessel 2 located on the ocean. The work ship 2 is a ship on which a worker who performs inspection and maintenance work is on board.

The connecting bridge 1 connecting the wind power generation facility 7 and the work boat 2 is arranged on the side of the wind power generation facility 7, for example, on the platform 9. The platform 9 is located at a height far away from the sea surface SL. Platform 9 is located, for example, at a height of about 15 m above sea level SL. As a result, it is possible to prevent access by persons unrelated to the inspection and maintenance of the wind power generation facility 7. A stage 10 for rotating the connecting bridge 1 in the horizontal direction and the vertical direction is arranged on the platform 9.

As shown in FIG. 1, the connecting bridge 1 includes a bridge body 20, a telescopic actuator 30, and a tip engaging portion 26. The bridge body 20 is made of a material that is lightweight and has high strength, and is made of, for example, a material such as aluminum or an aluminum alloy. The bridge body 20 includes a base end bridge body 21 rotatably attached to the stage 10, and movable bridge bodies 22 and 23 that can be expanded and contracted with respect to the base end bridge body 21. The movable bridge bodies 22 and 23 include a first movable bridge body 22 on the proximal end side and a second movable bridge body 23 on the distal end side. The first movable bridge body 22 is configured to be stretchable with respect to the base end bridge body 21. The second movable bridge body 23 is configured to be stretchable with respect to the first movable bridge body 22.

The base end bridge body 21, the first movable bridge body 22, and the second movable bridge body 23 have a sidewalk portion for workers and the like to pass through, and a fence portion for preventing the passing workers and the like from falling, respectively. And have. As an example, the length of the base end bridge body 21 is about 10 m, the lengths of the first movable bridge body 22 and the second movable bridge body 23 are about 7.5 m, respectively, and the bridge body 20 is It can expand and contract in the range of about 10m to about 25m.

Two lock cylinders 35, 35 are provided on the upper surface of the stage 10. Stopper receiving recesses 36 are provided on one and the other side surfaces of the base end bridge body 21. The lock pin of the lock cylinder 35 engages with each of the corresponding stopper receiving recesses 36. As a result, the base end bridge body 21 of the bridge body 20 is locked and fixed, and the horizontal rotation and the vertical rotation of the bridge body 20 are restricted.

A cylinder tip support portion 28 is arranged at a portion closer to the tip of the second movable bridge body 23 located on the most tip side of the movable bridge body. A tip engaging portion 26 is arranged on the lower end side of the second movable bridge body 23 on the tip end side. Details of the tip engaging portion 26 will be described later.

A telescopic cylinder 30 is provided in order to make the movable bridge bodies 22 and 23 expandable and contractible with respect to the base end bridge body 21. The telescopic cylinder 30 acts as a telescopic actuator and is driven by hydraulic pressure (for example, hydraulic pressure) from a hydraulic pressure generator. The telescopic cylinder 30 is supported by the telescopic cylinder support portion 25. The tip of the telescopic cylinder 30 is connected to the cylinder tip support 28. Therefore, when the telescopic cylinder 30 protrudes, the movable bridge bodies 22 and 23 are in the extended state, and the length of the bridge body 20 becomes long. On the other hand, when the telescopic cylinder 30 contracts, the movable bridge bodies 22 and 23 are immersed, and the length of the bridge body 20 becomes short.

As shown in FIG. 5, the telescopic cylinder 30 is a telescopic type including a telescopic cylinder tube 31 and a plurality of piston rods 32, 33, 34 concentrically provided inside the telescopic cylinder tube 31. The telescopic cylinder 30 includes, for example, a first piston rod 32, a second piston rod 33, and a third piston rod 34.

Inside the telescopic cylinder tube 31, a double cylindrical first piston rod 32 is inserted so as to be movable in the cylinder axial direction. Inside the first piston rod 32, a double cylindrical second piston rod 33 is inserted so as to be movable in the cylinder axial direction. Inside the second piston rod 33, a columnar third piston rod 34 is inserted so as to be movable in the cylinder axial direction. Therefore, the telescopic cylinder 30 is a telescopic multi-stage cylinder in which the first piston rod 32, the second piston rod 33, and the third piston rod 34 are concentrically incorporated in the telescopic cylinder tube 31. According to this configuration, it is easy to increase the number of stages of the piston rods 32, 33, 34 while suppressing the length of the telescopic cylinder tube 31, and the telescopic cylinder 30 can be easily lengthened. The telescopic cylinder 30 changes from the shortened state shown by the solid line to the extended state shown by the alternate long and short dash line in FIG. 3 due to the protrusion of the piston rods 32, 33, 34.

The telescopic cylinder tube 31, the first piston rod 32, the second piston rod 33, and the third piston rod 34 are made of, for example, steel. As an example, each cylinder stroke of the first piston rod 32, the second piston rod 33, and the third piston rod 34 is about 5 m, and the expansion / contraction length of the expansion / contraction cylinder 30 is about 15 m. Further, as an example, the inner diameter of the telescopic cylinder tube 31 is about 170 mm, the outer diameter of the first piston rod 32 is about 150 mm, the inner diameter of the first cylinder tube 32b is about 100 mm, and the second piston rod 33 has an inner diameter of about 100 mm. The outer diameter is about 85 mm, the inner diameter of the second cylinder tube 33b is about 50 mm, and the outer diameter of the third piston rod 34 is about 35 mm.

A hydraulic circuit (not shown) is connected to the telescopic cylinder 30. The hydraulic circuit includes a head-side pipe, a rod-side pipe, a direction switching valve as a control valve, a pump, a tank, and the like. The pump and the tank are connected to the directional control valve, and the head-side pipe and the rod-side pipe are selectively connected to the pump or the tank via the directional control valve. That is, the directional control valve can be switched between the neutral position, the switching position on the head side, and the switching position on the rod side. In the neutral position, neither the head side pipe nor the rod side pipe is connected to the pump or the tank. At the switching position on the head side, the head side pipe is connected to the pump and the rod side pipe is connected to the tank, so that the telescopic cylinder 30 is in a stretched state. At the switching position on the rod side, the head side pipe is connected to the tank and the rod side pipe is connected to the pump, so that the telescopic cylinder 30 is shortened.

When the tip engaging portion 26 engages with the engaged portion 60, the bridge body 20 in which the telescopic cylinder 30 is in the stretched state swings or twists due to a large external force (for example, wind power). Sometimes. In such a case, in order to prevent an excessive load from acting on the telescopic cylinder 30, the head side pipe and the rod side pipe are cut off from the pump and the tank by setting the direction switching valve to the neutral position. Therefore, the positions of the telescopic cylinder 30 and the bridge body 20 are maintained in a state where the hydraulic pressure is released. As a result, even if a large external force acts, the external force is buffered, so that the telescopic cylinder 30 can be prevented from being damaged.

In FIG. 2, the stage 10 includes a vertical axis branch 13, a horizontal axis branch 80, a vertical actuator 17, and a horizontal actuator 70.

The base end portion of the base end bridge body 21 is rotatably supported in the vertical direction by the vertical axis support portion 13 and the vertical rotation shaft 14 provided at the lower part of the stage 10. A vertical support portion 18 is provided in a portion of the base end bridge body 21 near the base end. A telescopic cylinder support portion 25 (shown in FIG. 1) is provided at a portion near the tip of the base end bridge body 21.

A storage box 11 is continuously provided at the lower part of the stage 10. The storage box 11 contains a heavy horizontal actuator 70, a hydraulic pressure generator, a power supply, and the like. The hydraulic pressure generator includes a control valve, a pump, and a tank for driving the vertical actuator 17 and the telescopic actuator 30 with hydraulic pressure. The hydraulic pressure generator, which is a heavy object, is arranged on the opposite side of the connecting bridge 1 in the stage 10. According to this configuration, the weight can be balanced with the bridge body 20, which contributes to the stabilization of the rotation of the bridge body 20. From the power source, electric power is supplied to each hydraulic pressure generator, control device, remote controller receiver, sensor, etc. of the telescopic actuator 30, the vertical actuator 17, and the horizontal actuator 70.

A control device for controlling various operations of the connecting bridge 1 is electrically connected to the stage 10. A wireless remote controller having buttons for electrically controlling the control device is separately provided. The worker can control various operations of the communication bridge 1 by operating the wireless remote controller while facing the communication bridge 1 from the work ship 2.

On the opposite side of the connecting bridge 1 in the stage 10, a staircase 12 for going up and down the stage 10 is attached. According to this configuration, the weight can be balanced with the bridge body 20, which contributes to the stabilization of the rotation of the bridge body 20. Although the stairs 12 are integrally attached to the stage 10, they are separated from the platform 9. Therefore, the stage 10 rotates in the horizontal direction integrally with the stairs 12 and the storage box 11.

A vertical rotating cylinder support portion 15 is provided at the lower portion of the storage box 11. The vertical rotation cylinder 17 is rotatably supported by the vertical rotation cylinder support shaft 16 inserted through the vertical rotation cylinder support portion 15. The tip of the vertical rotation cylinder 17 is connected to the vertical support portion 18.

The vertical rotation cylinder 17 acts as a vertical actuator and is driven by hydraulic pressure (for example, hydraulic pressure) from a hydraulic pressure generator. The vertical rotation cylinder 17 causes the bridge body 20 to rotate, for example, at an angle of about 20 degrees upward with respect to the horizontal direction and at an angle of about 20 degrees downward with respect to the horizontal direction. It is configured.

A hydraulic circuit (not shown) is connected to the vertical rotation cylinder 17. The hydraulic circuit includes a head-side pipe, a rod-side pipe, a direction switching valve as a control valve, a pump, a tank, and the like. The pump and the tank are connected to the directional control valve, and the head-side pipe and the rod-side pipe are selectively connected to the pump or the tank via the directional control valve. That is, the directional control valve can be switched between the neutral position, the switching position on the head side, and the switching position on the rod side. In the neutral position, neither the head side pipe nor the rod side pipe is connected to the pump or the tank. At the switching position on the head side, the head side pipe is connected to the pump and the rod side pipe is connected to the tank, so that the vertical rotation cylinder 17 is in a stretched state. At the switching position on the rod side, the head side pipe is connected to the tank and the rod side pipe is connected to the pump, so that the vertical rotation cylinder 17 is shortened.

When the tip engaging portion 26 engages with the engaged portion 60, the bridge body 20 in which the vertically rotating cylinder 17 is in the stretched state swings or twists due to a large external force (for example, wind power). It may happen. In such a case, in order to prevent an excessive load from acting on the vertical rotation cylinder 17, the head side pipe and the rod side pipe are cut off from the pump and the tank by setting the direction switching valve to the neutral position. .. Therefore, the positions of the vertical rotation cylinder 17 and the bridge body 20 are maintained in a state where the hydraulic pressure is released. As a result, even if a large external force acts, the external force is buffered, so that the vertical rotating cylinder 17 can be prevented from being damaged.

The horizontal actuator 70 in the connecting bridge 1 will be described with reference to FIGS. 2 and 3.

A horizontal actuator 70 is provided to rotate the stage 10 to which the bridge body 20 is connected in the horizontal direction. The horizontal actuator 70 includes a double-acting horizontal rotating cylinder 71, a pinion 86 attached to the horizontal shaft support 80, and a rack 85 provided on the horizontal rotating cylinder tube 74 of the horizontal rotating cylinder 71. According to this configuration, the connecting bridge 1 which is a large load can be rotated by utilizing the large driving force of the horizontal rotating cylinder 71.

The horizontal axis branch 80 is integrally (fixed) erected with respect to the platform 9 facing the stage 10. The horizontal axis branch 80 is housed in a storage box 11 attached to the lower part of the stage 10, but is separate from the storage box 11. A pinion 86, which is a small gear that meshes with the rack 85, is integrally (fixed) attached to the central portion in the axial direction of the horizontal shaft support portion 80.

The stage 10 and the storage box 11 are rotatably supported with respect to the horizontal shaft support portion 80 via the upper bearing portion 82 and the lower bearing portion 83. The upper bearing portion 82 is, for example, a thrust bearing that supports an axial load. The lower bearing portion 83 is, for example, a radial ball bearing. The hydraulic pressure generator is fixed to the base of the storage box 11 inside the storage box 11. A roller 88 is provided at the bottom of the stage 10, that is, at the bottom of the storage box 11. According to this configuration, the stage 10 and the storage box 11 can be smoothly rotated in the horizontal direction. The rollers 88 are provided on the side of the proximal bridge body 21 and on the opposite side of the proximal bridge body 21 with the horizontal rotation shaft 81 interposed therebetween.

The horizontal rotation cylinder 71 includes two horizontal rotation piston rods 72, 72, a rack 85, and horizontal rotation hydraulic pressure generators 73, 73 on one side and the other side.

The horizontal rotation hydraulic pressure generators 73 and 73 on one side and the other side are fixed to a base provided inside the storage box 11. The rack 85 is integrally (fixed) mounted on the side surface of the horizontal rotating cylinder 71. The rack 85 is a linear gear that meshes with the pinion 86.

The rack 85 provided on the side of the stage 10 and the storage box 11 meshes with the pinion 86 provided on the side of the horizontal shaft branch 80, and the stage 10 and the storage box 11 are rotatably supported by the horizontal shaft branch 80. To. The linear motion of the rack 85 is converted into the rotational motion of the pinion 86, but since the side of the rack 85 is rotatable and the side of the pinion 86 is not rotatable, the side of the rack 85 is rotated. Therefore, the stage 10 and the storage box 11 on the side of the rack 85 rotate about the horizontal rotation shaft 81.

The horizontal rotating cylinder 71, the horizontal shaft branch 80, the pinion 86 and the rack 85 serve as the horizontal actuator 70. The rack 85 is linearly driven by the hydraulic pressure (for example, hydraulic pressure) from the horizontal rotation hydraulic pressure generator 73. The horizontal actuator 70 causes the stage 10 and the bridge body 20 to rotate, for example, at an angle of about 140 degrees in the horizontal direction.

According to the above configuration, the telescopic actuator 30, the vertical actuator 17, and the horizontal actuator 70 driven by hydraulic pressure can move the heavy and long connecting bridge 1 quickly and accurately, so that a worker or the like can be moved. Can be transported efficiently.

When the tip engaging portion 26 engages with the engaged portion 60, the horizontal rotating cylinder 71 may swing or twist due to a large external force (for example, wind power). In such a case, the direction switching valve can be set to the neutral position in order to prevent an excessive load from acting on the horizontal rotating cylinder 71. Therefore, the hydraulic fluid is not supplied or discharged from the horizontal rotating cylinder 71, and the positions of the horizontal rotating cylinder 71 and the bridge body 20 are maintained in a state where the hydraulic pressure is released. As a result, even if a large external force acts, the external force is buffered, so that the horizontal rotating cylinder 71 can be prevented from being damaged.

Therefore, when the connecting bridge 1 connects the one-side floating object 7 and the other-side floating object 2, the hydraulic pressures of the telescopic cylinder 30, the vertical rotating cylinder 17, and the horizontal rotating cylinder 71 are released. As a result, the external force acting on the connecting bridge 1 is buffered, so that the telescopic cylinder 30, the vertical rotating cylinder 17, and the horizontal rotating cylinder 71 can be prevented from being damaged.

[Connected structure according to the first embodiment]
The connection structure 4 of the connecting bridge 1 according to the first embodiment will be described with reference to FIGS. 6 to 11. FIG. 6 is a diagram illustrating a connecting structure 4 of the connecting bridge 1 according to the first embodiment. FIG. 7 is a side view showing the engaged portion 60 in the connecting structure 4 of the connecting bridge 1. FIG. 8 is a plan view of the engaged portion 60 shown in FIG. 7. FIG. 9 is a plan view showing the tip engaging portion 26 in the connecting structure 4 of the connecting bridge 1. FIG. 10 is a side view of the tip engaging portion 26 shown in FIG. FIG. 11 is a cross-sectional view of a portion circled in FIG. 10.

As shown in FIG. 6, the connecting structure 4 of the connecting bridge 1 includes a tip engaging portion 26 and an engaged portion 60. The tip engaging portion 26 is connected to the tip arm 41 which is the lower part of the second movable bridge body 23 and is arranged at the tip via a universal joint 42.

As shown in FIGS. 9 and 10, the universal joint 42 has a first axis 43 and a second axis 44 that are orthogonal to each other. The first shaft 43 is supported by the tip arm 41. A support shaft 45 extending in the vertical direction is connected to the second shaft 44. Therefore, since the angle of the support shaft 45 with respect to the tip arm 41 changes freely, the tip engaging portion 26 is supported while swinging with respect to the tip arm 41. This allows the tip engaging portion 26 to accommodate engagement at various angles in the horizontal and vertical directions.

The tip engaging portion 26 has a support shaft 45, a sleeve 46, and a magnetic plate 50. The support shaft 45 is connected to the universal joint 42. The sleeve 46 pivotally supports the support shaft 45. The magnetic plate 50 is connected to the sleeve 46. The magnetic plate 50 is a metal plate that sticks to a magnet, that is, a metal plate of a ferromagnetic material, and is, for example, a disk made of iron or an alloy containing iron. The diameter of the magnetic plate 50 is, for example, about 0.5 m.

As shown in FIG. 11, a non-lubricated sliding member is arranged between the support shaft 45 and the sleeve 46. The radial bush 47 and the thrust bush 48 serve as oil-free sliding members. The radial bush 47 and the thrust bush 48 are, for example, bushes in which non-magnetic brass is impregnated with a lubricant. As a non-lubricated sliding member, OILES Bush is exemplified. As a result, the magnetic plate 50 rotates smoothly around the support shaft 45. When combined with the universal joint 42 described above, the tip engaging portion 26 can accommodate engagement at various angles in the horizontal, vertical and axial directions.

As shown in FIGS. 7 and 8, the engaged portion 60 includes a magnet chuck base 61, a fence 63, a base 64, a switching lever 65, and a switching shaft 66. As shown in FIG. 6, the base 64 is attached to the deck 3 of the work boat 2.

The magnet chuck base 61 has a magnet chuck surface 62 of a circular flat plate, and the diameter of the magnet chuck surface 62 is, for example, about 10 m. The magnet chuck base 61 has a configuration in which a plurality of permanent magnets having opposite magnetic poles are arranged in a sandwich shape, and a joint iron plate in which a plurality of permanent magnets are arranged at the same interval is arranged. When the joint iron plate is slid in the lateral direction, the path of the magnetic force lines changes.

When the joint iron plate is moved to a position where the magnetic force line takes a large turn from the joint iron plate, the magnetic plate 50 is in an adsorption ON state where it can be adsorbed. At this time, the magnetic plate 50 is magnetically attracted and fixed to the magnet chuck surface 62 of the magnet chuck base 61. That is, the magnetic plate 50 of the tip engaging portion 26 and the magnet chuck base 61 of the engaged portion 60 are magnetically connected.

When the joint iron plate is moved to a position where the magnetic force lines take a short cut only to the joint iron plate, the magnetic plate 50 becomes a suction OFF state in which adsorption becomes impossible. The switching lever 65 slides and moves the joint iron plate via the switching shaft 66. Therefore, by operating the switching lever 65, it is possible to switch whether or not the magnetic plate 50 is attracted / fixed to the magnet chuck base 61 (adsorption ON state or adsorption OFF state) with one touch. The operation of the switching lever 65 is performed manually by the worker or by remote control by the remote control operation of the worker. In such a magnetic connection structure, the magnetic plate 50 of the tip engaging portion 26 is detachably connected to the magnet chuck base 61 of the engaged portion 60. This makes it possible to easily switch the magnetically connected structure between the engaged state and the non-engaged state.

In the magnetic connection structure, a permanent magnet is used for the magnet chuck base 61, but an electromagnet can be used. By the operation of switching the energization of the electromagnet to ON / OFF, it is possible to switch whether or not the magnetic plate 50 is attracted / fixed to the magnet chuck base 61 (adsorption ON state or adsorption OFF state) with one touch.

The engaged portion 60 has a fence 63 on the opposite side of the wind power generation facility 7 (connecting bridge 1). The fence 63 is provided on about half of the outer peripheral portion of the magnet chuck base 61. The fence 63 has a height substantially equal to the height of the switching lever 65. This makes it possible to prevent the swinging magnetic plate 50 from inadvertently colliding with surrounding objects (for example, the switching lever 65) when the magnetic plate 50 is positioned with respect to the magnet chuck base 61.

According to the above configuration, since the connecting structure 4 of the connecting bridge 1 is a magnetic connecting structure and does not have a mechanical connecting structure, stable operation over a long period of time becomes possible.

[Connected structure according to the second embodiment]
The connection structure 4 of the connecting bridge 1 according to the second embodiment will be described with reference to FIG. FIG. 12 is a diagram illustrating a connection structure 4 of the connecting bridge 1 according to the second embodiment.

As shown in FIG. 12, the connecting structure 4 of the connecting bridge 1 includes a tip engaging portion 26 and an engaged portion 60. The tip engaging portion 26 is connected to the tip arm 41 located on the tip side of the lower part of the second movable bridge body 23 via a universal joint 42.

The tip engaging portion 26 has a contact plate 55, a protruding portion 57, and a sensor 58. The contact plate 55 is connected to the universal joint 42 and is, for example, a disk. The contact plate 55 is made of a rigid metal material, such as iron or an alloy containing iron. The protrusion 57 is connected to the contact plate 55. The protrusion 57 extends downward in the vertical direction so as to be orthogonal to the contact plate 55. The protruding length of the protruding portion 57 is dimensionally configured so as to be stably engaged with the engaging recess 69 of the engaged portion 60, which will be described later, and is, for example, about 0.5 m. The protrusion 57 has a columnar or pipe shape. The protrusion 57 is supported by the universal joint 42 so as to extend downward in the vertical direction. The outer diameter of the protrusion 57 is, for example, about 0.1 m. The protrusion 57 is made of a rigid metal material, such as iron or an alloy containing iron.

The engaged portion 60 has an engaging base 67, a guide recess 68, and an engaging recess 69. The engagement base 67 is attached to the deck 3 of the work boat 2. The engagement base 67 is made of a rigid metal material, for example, iron or an alloy containing iron.

The engaging recess 69 is a cylindrical recess formed in the engaging table 67. The engaging recess 69 has an inner diameter larger than the outer diameter of the protrusion 57 and a depth larger than the protrusion length of the protrusion 57. That is, the engaging recess 69 has an inner diameter and a depth that allow the protrusion 57 to be engaged and disengaged, and is configured to be, for example, about 1 cm larger than the protrusion 57.

When the protrusion 57 is positioned downward in the vertical direction, the protrusion 57 easily comes out of the engaging recess 69, but when the protrusion 57 is in a position deviated from the vertical direction, the protrusion 57 cannot easily come out of the engaging recess 69. , The engaging recess 69 is configured. When the protruding portion 57 is moved downward in the vertical direction, the protruding portion 57 is inserted into the engaging recess 69, and the protruding portion 57 is geometrically engaged with the engaging recess 69. As a result, a morphological connection structure is formed between the protrusion 57 and the engagement recess 69. When the protrusion 57 is moved upward in the vertical direction, the protrusion 57 easily comes out of the engagement recess 69, and the engagement is released. In the geometric connection structure, the protruding portion 57 of the tip engaging portion 26 is detachably connected to the engaging recess 69 of the engaged portion 60. This makes it possible to easily switch the geometrically connected structure between the engaged state and the non-engaged state.

At the upper part of the engaging recess 69, a concave guide recess 68 having a diameter larger than that of the engaging recess 69 is formed. The guide recess 68 has a circular guide opening 68a when viewed from above. The diameter of the guide recess 68 gradually increases from the engaging recess 69 toward the guide opening 68a. Therefore, the guide recess 68 and the engaging recess 69 formed in the engaging table 67 form a funnel-shaped recess. As a result, even if the position of the protrusion 57 is displaced with respect to the engagement recess 69, the protrusion 57 is guided to the engagement recess 69 by the guide recess 68 and is appropriately inserted into the engagement recess 69. .. Then, the protruding portion 57 engages with the engaging recess 69.

When the contact plate 55 comes into contact with the contacted surface 67a located on the upper surface of the engaging table 67, the protruding portion 57 is configured to engage with the engaging recess 69. A sensor 58 is arranged on the lower surface of the contact plate 55. The sensor 58 detects whether or not the contact plate 55 is in contact with the engagement base 67. Examples of the sensor 58 include non-contact sensors such as inductive, capacitive, magnetic proximity sensors, and reflective microphoto sensors, in addition to contact sensors such as limit switches and micro switches. ..

According to the above configuration, since the connecting structure 4 of the connecting bridge 1 is a geometric connecting structure and does not have a mechanical connecting structure, stable operation over a long period of time becomes possible.

Although the specific embodiment of the present invention has been described, the present invention is not limited to the above embodiment, and can be variously modified and carried out within the scope of the present invention.

In the above embodiment, as an example, the one-side floating object 7 is a wind power generation facility 7 located on the ocean, and the other-side floating object 2 is a work vessel 2 located on the ocean. As a result, the connecting structure 4 of the connecting bridge 1 can be reliably operated even in a harsh environment where corrosion and rust occur.

In addition, the present invention is erected on a remote island on the ocean, a wind power generation facility 7 fixed on an island in a large river or lake, a lighthouse, a transmission tower, and a seabed SB for drilling crude oil and natural gas. It can also be applied to tower-type floating structures such as drilling rigs and floating lighthouses floating in the ocean, large rivers and lakes. Therefore, since the one-sided floating object is a fixed or floating structure and the other-sided floating object is a floating object, at least one of the one-sided floating object and the other-side floating object is a floating object floating on the water. .. As a result, the connecting structure 4 of the connecting bridge 1 can be reliably operated even when an unstable floating object is included.

The connecting bridge 1 is installed on the platform 9 at a very high position (for example, about 15 m high) from the sea surface SL so that people who are not involved in inspection and maintenance cannot easily access the one-sided surface object 7. However, it may be installed at a height of several times the height of a human.

The protrusion 57 can have a tapered shape having a substantially truncated cone shape. That is, the protruding portion 57 has a circular shape in the front view and can be formed into a trapezoidal shape tapered toward the engaging recess 69 in the cross-sectional view. Further, the engaging recess 69 has a circular shape when viewed from the front, and can be tapered toward the deck 3 and has a tapered shape (trapezoidal shape) when viewed from the front.

When the tapered protrusion 57 is moved downward in the vertical direction, it easily engages with the tapered engaging recess 69. At this time, the outer peripheral surface of the protruding portion 57 is in close contact with the inner peripheral surface of the engaging recess 69 in a peripheral surface shape and engages with the inner peripheral surface. Therefore, the protrusion 57 inserted into the engagement recess 69 is geometrically engaged with the engagement recess 69, so that a geometric connection structure is formed between the protrusion 57 and the engagement recess 69. To. When the tapered protrusion 57 is moved upward in the vertical direction, the engagement with the tapered engaging recess 69 is easily released. In the geometric connection structure, the protruding portion 57 of the tip engaging portion 26 is detachably connected to the engaging recess 69 of the engaged portion 60. This makes it possible to easily switch the geometrically connected structure between the engaged state and the non-engaged state.

A staircase for workers to go up and down can be detachably attached to the tip end side of the second movable bridge body 23.

The connecting bridge 1 is arranged on the side of the work vessel 2 (other side floating object), and the engaged portion 60 that engages with the tip engaging portion 26 of the connecting bridge 1 is a wind power generation facility 7 (one side floating object). It may be arranged on the side of the object).

The present invention and embodiments can be summarized as follows.

The connecting structure 4 of the connecting bridge 1 according to one aspect of the present invention is
It is a connecting structure 4 of the connecting bridge 1 connecting the one-sided water object 7 and the other-side water object 2 located on the water.
The connecting bridge 1 is arranged on the one-sided horizontal object 7, and the telescopic bridge body 20, the telescopic actuator 30 that expands and contracts the bridge body 20, and the bridge body 20 are rotated in the vertical direction. It has a vertical actuator 17, a horizontal actuator 70 that rotates the bridge body 20 in the horizontal direction, and a tip engaging portion 26 disposed at the tip of the bridge body 20.
The other side water object 2 is provided with an engaged portion 60 that engages with the tip engaging portion 26.
The connecting structure 4 has a structure in which the tip engaging portion 26 is detachably connected to the engaged portion 60.
The connection structure 4 is characterized by being a magnetic connection structure or a shape connection structure.

According to the above configuration, since the connecting structure 4 of the connecting bridge 1 does not have a mechanical connecting structure, stable operation over a long period of time becomes possible.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
As the magnetically connected structure, the tip engaging portion 26 has a magnetic plate 50, and the engaged portion 60 has a magnet chuck base 61.

According to the above embodiment, the magnetically connected structure can be easily switched between the engaged state and the non-engaged state.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
The magnet chuck base 61 has a fence 63 on the opposite side of the one-side floating object 7.

According to the above embodiment, when the magnetic plate 50 is positioned with respect to the magnet chuck base 61, it is possible to prevent the swinging magnetic plate 50 from inadvertently colliding with surrounding objects.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
The tip engaging portion 26 has a support shaft 45 connected to a universal joint 42 provided at the tip of the bridge body 20, and a sleeve 46 to which the support shaft 45 is pivotally supported and the magnetic plate 50 is connected. A non-lubricated sliding member 47, 48 is disposed between the support shaft 45 and the sleeve 46.

According to the above embodiment, the tip engaging portion 26 can accommodate engagement at various angles in the horizontal, vertical and axial directions.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
As the geometrically connected structure, the tip engaging portion 26 has a protruding portion 57 extending in the vertical direction, and the engaged portion 60 has an engaging recess 69 that engages with the protruding portion 57.

According to the above embodiment, the geometrically connected structure can be easily switched between the engaged state and the non-engaged state.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
A guide recess 68 having a diameter larger than that of the engaging recess 69 is formed in the upper portion of the engaging recess 69.

According to the above embodiment, even if the position of the protrusion 57 is displaced with respect to the engagement recess 69, the protrusion 57 is guided to the engagement recess 69 by the guide recess 68 and is appropriately inserted into the engagement recess 69. Will be inserted into.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
The telescopic actuator 30, the vertical actuator 17, and the horizontal actuator 70 are driven by hydraulic pressure.

According to the above embodiment, since the heavy and long connecting bridge 1 can be moved quickly and accurately, workers and the like can be efficiently transported.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
When the connecting bridge 1 connects the one-side water object 7 and the other-side water object 2, the hydraulic pressure is released.

According to the above embodiment, since the external force acting on the connecting bridge 1 is buffered, it is possible to prevent the telescopic cylinder 30, the vertical rotating cylinder 17, and the horizontal rotating cylinder 71 from being damaged.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
At least one of the one-side floating object 7 and the other-side floating object 2 is a floating object floating on the water.

According to the above embodiment, the connecting structure 4 of the connecting bridge 1 can be reliably operated even when an unstable floating object is included.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
The connecting bridge 1 is arranged at an inaccessible height.

According to the above embodiment, it is possible to prevent a person who is not related to the inspection and maintenance of the one-sided floating object 7 from accessing the surface.

Further, in the connecting structure 4 of the connecting bridge 1 of one embodiment,
The one-side floating object 7 is a wind power generation facility 7 located on the ocean, and the other-side floating object 2 is a work vessel 2 located on the ocean.

According to the above embodiment, the connecting structure 4 of the connecting bridge 1 can be reliably operated even in a harsh environment where corrosion and rust occur.

1 ... Communication bridge 2 ... Work boat (other side floating object)
3 ... Deck 4 ... Connection structure 7 ... Wind power generation facility (one side floating object)
8 ... Foundation support 9 ... Platform 10 ... Stage 11 ... Storage box 12 ... Stairs 13 ... Vertical axis branch 14 ... Vertical rotation axis 15 ... Vertical rotation cylinder support 16 ... Vertical rotation cylinder support axis 17 ... Vertical rotation Cylinder (vertical actuator)
18 ... Vertical support 20 ... Bridge body 21 ... Base end bridge body 22 ... First movable bridge body (movable bridge body)
23 ... Second movable bridge body (movable bridge body)
25 ... Telescopic cylinder support 26 ... Tip engaging part 28 ... Cylinder tip support 30 ... Telescopic cylinder (expandable actuator)
31 ... Telescopic cylinder tube 32 ... 1st piston rod 33 ... 2nd piston rod 34 ... 3rd piston rod 35 ... Lock cylinder 36 ... Stopper receiving recess 41 ... Tip arm 42 ... Flexible joint 43 ... 1st axis 44 ... 2nd axis 45 ... Support shaft 46 ... Sleeve 47 ... Radial bush (oil-free sliding member)
48 ... Thrust bush (oil-free sliding member)
50 ... Magnetic plate 51 ... Engagement surface 55 ... Contact plate 57 ... Protruding part 58 ... Sensor 60 ... Engagement part 61 ... Magnet chuck base 62 ... Magnet chuck surface 63 ... Fence 64 ... Base 65 ... Switching lever 66 ... Switching shaft 67 ... Engagement base 67a ... Contact surface 68 ... Guide recess 68a ... Guide opening 69 ... Engagement recess (engaged portion)
70 ... Horizontal actuator 71 ... Horizontal rotation cylinder 72 ... Horizontal rotation piston rod 73 ... Horizontal rotation hydraulic pressure generator 80 ... Horizontal shaft branch 81 ... Horizontal rotation shaft 82 ... Bearing part 83 ... Bearing part 85 ... Rack 86 ... Pinion 88 ... Coro SB ... Undersea SL ... Sea surface

Claims (12)

It is a connecting structure of a connecting bridge that connects one-sided and other-sided water objects located on the water.
The connecting bridge is arranged on the one-sided horizontal object, and has a stretchable bridge body, a telescopic actuator that expands and contracts the bridge body, a vertical actuator that rotates the bridge body in a vertical direction, and the bridge. It has a horizontal actuator that rotates the body in the horizontal direction and a tip engaging portion disposed at the tip of the bridge body.
The tip engaging portion is connected to the tip of the bridge body via a universal joint.
The other side water object is provided with an engaged portion that engages with the tip engaging portion.
The connecting structure has a structure in which the tip engaging portion is detachably connected to the engaged portion.
A connecting structure of a connecting bridge, wherein the connecting structure is a magnetic connecting structure. The connecting structure for a connecting bridge according to claim 1, wherein the magnetically connected structure includes a magnetic plate at the tip engaging portion and a magnet chuck base at the engaged portion. The connecting structure of a connecting bridge according to claim 2, wherein the magnet chuck base has a fence on the opposite side of the one-sided floating object. The tip engaging portion has a support shaft connected to the universal joint and a sleeve that pivotally supports the support shaft and is connected to the magnetic plate, and is not between the support shaft and the sleeve. The connecting structure of a connecting bridge according to claim 2 or 3, wherein a sliding member for refueling is arranged. It is a connecting structure of a connecting bridge that connects one-sided and other-sided water objects located on the water.
The connecting bridge is arranged on the one-sided horizontal object, and has a stretchable bridge body, a telescopic actuator that expands and contracts the bridge body, a vertical actuator that rotates the bridge body in a vertical direction, and the bridge. It has a horizontal actuator that rotates the body in the horizontal direction and a tip engaging portion disposed at the tip of the bridge body.
The tip engaging portion is connected to the tip of the bridge body via a universal joint.
The other side water object is provided with an engaged portion that engages with the tip engaging portion.
The connecting structure has a structure in which the tip engaging portion is detachably connected to the engaged portion.
A connecting structure of a connecting bridge, wherein the connecting structure is a geometrically connected structure. The morphologically connected structure is characterized in that the tip engaging portion has a protruding portion extending in a vertical direction, and the engaged portion has an engaging recess that engages with the protruding portion. Item 5. The connecting structure of the connecting bridge according to Item 5. The connecting structure for a connecting bridge according to claim 6 , wherein a guide recess having a diameter larger than that of the engaging recess is formed in the upper portion of the engaging recess. The connecting structure of a connecting bridge according to any one of claims 1 to 7 , wherein the telescopic actuator, the vertical actuator, and the horizontal actuator are driven by hydraulic pressure. The connecting structure of the connecting bridge according to claim 8 , wherein when the connecting bridge connects the one-sided water object and the other-side water object, the hydraulic pressure is released. The connecting structure of a connecting bridge according to any one of claims 1 to 9 , wherein at least one of the one-side floating object and the other-side floating object is a floating object floating on the water. .. The connecting structure of the connecting bridge according to any one of claims 1 to 10 , wherein the connecting bridge is arranged at a height inaccessible. One of claims 1 to 11 , wherein the one-side floating object is a wind power generation facility located on the ocean, and the other-side floating object is a work vessel located on the ocean. The connecting structure of the connecting bridge described in.

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