KR20120119335A - A vessel with retractable thruster - Google Patents

Abstract

PURPOSE: A ship with a thruster is provided to improve the workability of installing the thruster by an effective structure, and to easily lift the thruster and canister. CONSTITUTION: A ship comprises a thruster(200), a canister(300), a trunk(400), and a lifting unit(500). The canister is connected to the upper part of the thruster. The canister drives the thruster. The trunk is installed in a hull. The trunk comprises a space for the thrust and canister to move up and down. The lifting unit comprises one or more cables and a cable winding unit. One end of the cable is connected to the canister. The cable winding unit is installed in the hull, and winds the other end of the cable. The lifting unit moves the thruster and canister in the space.

Description

Vessel with Retractable Thruster {A VESSEL WITH RETRACTABLE THRUSTER}

The present invention relates to a ship having a retractable thruster, and more particularly, to provide a ship having a retractable thruster capable of easily elevating the thruster in a trunk.

Due to the rapid international industrialization and industrial development, the use of global resources such as petroleum is gradually increasing, and the stable production and supply of crude oil is becoming a very important issue on a global scale.

For this reason, the development of marginal or deep sea fields, which have been neglected in recent years because of their lack of economic viability, has become economical, and thus, along with the development of seabed mining technology, drilling facilities suitable for the development of such fields are equipped. A ship is being developed.

Conventional subsea drilling vessels are mainly used for rig ships or fixed platforms dedicated to subsea drilling, which can be sailed only by tugboats and anchored to specific points of the sea using mooring devices. In recent years, so-called drill ships, which are manufactured in the same form as general ships so that they can be sailed by their own power and equipped with advanced drilling equipment, have been developed and used for subsea drilling.

Ships such as these drillships are designed to sail on their own power without tugboats due to the working conditions that require frequent movement of their positions, and they can also be used to navigate the ship's position in rough sea conditions without the use of conventional mooring devices. It is equipped with a dynamic positioning system that can be safely held at a certain drilling point.

A key equipment used for main propulsion and self-positioning of such ships is azimuth thruster (hereinafter referred to as "thruster"), which is a kind of propulsion device. At this time, the thruster is mainly located on the bottom of the bottom of the hull, it is provided with a propeller rotatable 360 degrees to propel, reverse propulsion or rotation of the ship, propulsion and position control combined propulsion.

The thruster is controlled by the main thruster and the rudder when the magnetic position control to maintain the vessel in the desired position against disturbances such as birds and waves, and when the vessel is to be docked to the harbor and the marine structure. It is not possible and can be used when you want to control a ship using multiple thrusters. Here, the position of the thrust disposed below the bottom of the hull for controlling the magnetic position of the ship is called a magnetic positioning control mode (hereinafter referred to as "DP mode").

However, the thruster is useful for position control of the ship in DP mode, but during ship operation, the thruster becomes a resistor because it has a structure protruding below the bottom of the hull and reduces the ship's operating efficiency. In addition, in the DP mode, the diver needs to perform the operation such as installing, releasing, repairing, or repairing the thruster below the bottom of the hull, that is, below the sea level, so that the work is dangerous and complicated, thereby reducing work efficiency. In addition, especially when the thruster breaks down during the operation of the ship, the repair and repair work is complicated, and due to the structure protruding from the lower part of the hull, it is difficult to enter the dock for hull repair.

In order to solve the above problems, methods for protruding out of the hull during magnetic position control and introducing a thruster into the hull during operation are proposed.

First, the method of retracting the thruster itself includes installing a propeller generating propulsion force at the lower end of the main shaft, and raising the main shaft along the guide member installed in the hull to draw the thruster itself into the hull. will be. This method is mainly used for small and medium sized ships because of the limited rigidity of the main shaft with propeller against thruster thrust. In addition, this was developed for the purpose of reducing the resistance in the state in which the thruster is introduced into the hull during the operation of the ship (aka "Transit mode"), so that the diver in repairing, repairing the thruster There is still a problem to work under the sea level.

Therefore, in order to solve the problems caused by the method of introducing the thruster itself and to apply to large vessels, and to overcome the rigid limit of the conventional main shaft, a canister supporting the thruster on the top of the thruster is provided. The method of installing and raising a thruster and a canister to the upper part of the ship's waterline in a ship body is proposed. A method of introducing the thruster and the canister is to install a vertical tunnel, that is, a trunk, which vertically elevates the canister and the thruster in the hull, and elevate the canister and the thruster inside the trunk.

Two methods are currently considered for lifting the thruster and the canister inside the trunk.

First, the rack gear and the pinion gear are used to introduce the thruster and the canister into the hull. The method includes the pinion gear installed on the inner wall of the trunk, the rack gear installed on the canister, and the rack gear and the pinion gear. The thruster and the canister are lifted from the inside of the trunk by the fitting.

However, since this method installs the rack gear in the canister, the length of the rack gear is required to be longer than the vertical rise of the canister, so that the height of the canister can be long, and in order to repair and repair the canister and thruster, There is a problem in that the canister protrudes excessively on the deck when raised to the upper deck of the hull. In addition, since the rack gear and pinion gear must be precisely installed in a large structure such as a trunk and a canister, there is a problem that the manufacturing cost increases and the production period is long.

Secondly, the thruster and the canister are introduced into the hull using a hydraulic cylinder. The method includes coupling the hydraulic cylinder to a frame installed vertically on the deck of the hull and connecting the hydraulic cylinder to the upper part of the canister. The thruster and the canister are raised and lowered inside the trunk.

However, this method has a problem in that the length of the hydraulic cylinder should be as long as the height of the thruster and the canister rises, and in order to avoid the length of the hydraulic cylinder, if a short length hydraulic cylinder is to be used, In order to raise the thruster and the canister, there is a problem that the expansion and contraction operation must be repeated while constantly changing the fixed position of the hydraulic cylinder.

Therefore, the technical problem to be achieved by the present invention is to have a thruster and a canister easily lifted, and having an efficient structure, with an insertable thruster which can improve workability in mounting and maintenance of the thruster. To provide a vessel.

According to an aspect of the invention, the thruster; A canister coupled to an upper portion of the thruster and driving the thruster; A trunk provided in the hull and having a space part in which the thruster and the canister are lifted and raised; And at least one cable connected to one end of the canister, and a cable winding unit installed on the hull to wind up the other end of the at least one cable, and a platform for elevating the thruster and the canister from the space. Vessels with retractable thrusters comprising teeth may be provided.

The cable winding unit includes: a plurality of winches installed on the hull to wind the cable; And a first pulley disposed between the winch and the canister and installed in the hull to guide the cable connected to the canister to the winch.

The first pulley may be a high pulley.

According to another aspect of the invention, the thruster; A canister coupled to an upper portion of the thruster and driving the thruster; A trunk provided in the hull and having a space part in which the thruster and the canister are lifted and raised; And a hydraulic cylinder having one end connected to the canister and the other end connected to both sides of the hull, and a hydraulic cylinder connected between both ends of the at least one cable to pull and unwind the cable. There may be provided a ship having a retractable thruster comprising a lifting device for elevating the sterister and the canister in the space of the trunk.

The elevating device includes a first pulley installed on an upper portion of the deck; And a second pulley for supporting the cable coupled to the hull through the first pulley between the first pulley and the hull, wherein the cylinder rod of the hydraulic cylinder is coupled to the second pulley to expand and contract. Can be.

The first pulley may be a high pulley, and the second pulley may be a pulley.

The hydraulic cylinder may be installed in the height direction of the hull inside the hull.

It may further include at least one guide member installed on any one of the inner wall of the trunk and the outer wall of the canister forming the space portion to guide the lifting of the canister.

The at least one guide member may be a plurality of feed rollers installed on the inner wall of the trunk forming the space part to support and support the outer wall of the canister and spaced apart from each other in the vertical direction.

In order to limit the downward movement in the space portion of the canister, a lower portion of the canister is provided with a protrusion projecting from the outer peripheral surface, the inner wall of the trunk below the space portion may be provided with a stopper for seating the protrusion. .

One end of the cable may be coupled to the protrusion.

The thruster is positioned at a first position corresponding to the bottom surface of the hull, a second position corresponding to the draft surface in which the hull is submerged in the seawater, and a third position corresponding to the upper side of the draft line. It may further include a locking device for fixing.

The locking device includes a plurality of locking pins spaced apart from each other in the trunk forming the space portion; And a plurality of grooves provided on the outer wall of the canister to be spaced apart from each other and into which the plurality of locking pins are inserted.

The elevating device may further include a first sensing unit configured to detect a change in the length of the cable.

A second sensing unit provided on an upper portion of the canister to sense a position of the canister; And a controller configured to control the elevator apparatus based on a signal sensed by at least one of the first sensing unit and the second sensing unit.

Embodiments of the present invention can not only easily lift the thruster and canister, but also have an efficient structure to improve workability in mounting and maintenance of the thruster.

1 is a perspective view showing a vessel having a retractable thruster according to an embodiment of the present invention.
2 is a cross-sectional view showing a vessel having a retractable thruster according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a state in which a thruster is positioned at a first position according to an embodiment of the present invention.
4 is a cross-sectional view showing a state in which the thruster is located in the second position according to an embodiment of the present invention.
5 is a cross-sectional view illustrating a state in which a thruster is positioned at a third position according to an embodiment of the present invention.
6 is a perspective view showing a vessel provided with a retractable thruster according to another embodiment of the present invention.
7 is a cross-sectional view showing a vessel having a retractable thruster according to another embodiment of the present invention.
8 is a cross-sectional view illustrating a state in which a thruster is positioned at a first position according to another embodiment of the present invention.
9 is a cross-sectional view showing a state where the thruster is located in the second position according to another embodiment of the present invention.
10 is a cross-sectional view illustrating a state in which a thruster is positioned at a third position according to another embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

The ship according to the present invention is a drilling ship drilling sea oil, ships transporting people or cargo, LNG-FPSO (Liquefied Natural Gas-Floating Production Storage Offloading), floating crude oil storage It may include floating offshore structures such as floating storage units (FSUs).

Hereinafter, with reference to the accompanying drawings, first will be described in detail with respect to the ship having a retractable thruster according to an embodiment of the present invention.

1 is a perspective view showing a vessel having a retractable thruster according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a vessel having a retractable thruster according to an embodiment of the present invention.

1 and 2, the ship provided with a retractable thruster according to an embodiment of the present invention, the thruster 200, the thruster 200 is coupled to the upper portion of the thruster 200 A trunk 400 having a canister 300 installed therein and a hull 100 provided therein and a space 410 in which the thruster 200 and the canister 300 are elevated are provided. And a lifting device 500 having a cable 510 connected to the canister 300 and a cable winding unit 530 winding the cable 510, and a guide member 600 for guiding the lifting of the canister 300. And a locking device 700 for fixing the canister 300 to the trunk 400.

The thruster 200 is disposed below the bottom surface 110 of the hull, and serves to propel, reverse propel or rotate the vessel and also provide a driving force for controlling the magnetic position of the vessel. In particular, in this embodiment, the thruster 200 is mainly used for the magnetic position control to move the vessel to a specific position, and to maintain the vessel at that position. In addition, in this embodiment, the thruster 200 uses an azimuth thruster used for propulsion and magnetic position control, but the scope of the present invention is not limited thereto, and the bottom surface 110 of the hull is not limited thereto. Propulsion device for providing a driving force, such as installed in the hull 100 may be the same. The thruster 200 according to the present embodiment described below means an azimuth thruster.

The thruster 200 includes a propeller 210 disposed inside the circular nozzle protection plate 250 and providing a propulsion force according to rotation, and a power transmission device (not shown) configured as a gear device therein, so that the thruster 210 includes a propeller 210. It includes a hub 230 for transmitting a rotational force to). The hub 230 receives the power transmitted from the driving device (not shown) installed in the canister 300 through the vertical shaft 270 and the propeller 210 through the power transmission device installed therein. To provide torque.

The canister 300 is coupled to the upper portion of the thruster 200 serves to transfer power to the thruster 200. In addition, the canister 300 also serves to support the thruster 200. When the thruster 200 is operated below the bottom surface 110 of the hull, the canister 300 supports the thruster 200 against the thrust force of the thruster 200 and is below the bottom surface 110 of the hull. The position of the thruster 200 is maintained.

In this embodiment, the canister 300 may be composed of a plurality of compartments (not shown), each compartment is formed to be isolated from each other. Inside the compartment, a driving device (not shown) for driving the propeller 210 of the thruster 200 is installed. On the other hand, the canister 300 may be formed in the entrance and exit (not shown) to enter and exit. In addition, the canister 300 is elevated in the space 410 of the trunk 400 by the elevating device 500. At this time, the thruster 200 coupled to the canister 300 is also elevated.

The trunk 400 is formed to be perpendicular to the hull 100, and serves as a passage through which the thruster 200 and the canister 300 are elevated. At this time, the trunk 400 may be formed to open from the bottom surface 110 of the hull to the deck (130, deck). That is, the space 410 is formed in the trunk 400, and the thruster 200 and the canister 300 are lifted and raised in the space 410. The space 410 and the trunk 400 has a structure that is watertight with the hull 100 inside.

In addition, the trunk 400 in the present embodiment may be formed in a plurality of stern portion, the center parallel portion, the bow portion of the hull 100 in a symmetrical direction along the longitudinal axis of the hull 100, the propulsion force and magnetic The thruster 200 and the canister 300 are vertically elevated in the space 410 for position control.

As shown in detail in FIG. 2, a stopper 450 protruding into the interior of the space 410 is installed on an inner wall of the trunk 400 under the space 410, and a lower portion of the canister 300 is provided. The protrusion 310 is provided to protrude from the outer peripheral surface. A plurality of stoppers 450 may be installed along a lower inner circumferential surface of the trunk 400 at predetermined intervals or may be integrally installed to protrude along the lower inner circumferential surface of the trunk 400. In addition, the protrusions 310 may be installed in plurality to be spaced apart from each other along the lower outer circumferential surface of the canister 300 to correspond to the stopper 450, or may be integrally installed to protrude along the lower outer circumferential surface of the canister 300.

 As such, by installing the stopper 450 and the protrusion 310 at the lower portion of the trunk 400 and the lower portion of the canister 300, respectively, the canister 300 is restricted by the downward movement in the space 410 of the canister 300. In the case where the cable 510 is disconnected, the canister 300 and the thruster 200 fall out of the hull 100 as well as the canister 300 is prevented from falling out of a predetermined range. Done.

1 and 2, the guide member 600 may be installed on any one of an inner wall of the trunk 400 and an outer wall of the canister 300, and the guide member 600 may include the trunk 400. When installed on the inner wall of the canister 300 when lifting the guide member 600 serves to support the outer wall of the canister 300 to guide the canister 300 to move up and down in the space 410 in a stable manner. do.

 Here, the guide member 600, in this embodiment, a plurality of feed roller 600 is applied so that the canister 300 can be raised and lowered stably. The plurality of feed rollers 600 are installed on the inner wall of the trunk 400 forming the space part 410 to support the outer wall of the canister 300, and are spaced apart from each other in the vertical direction from the inner wall of the trunk 400. It is installed. In this embodiment, when the canister 300 is elevated, the feed roller 600 is installed on the inner wall of the trunk 400 to support the outer wall of the canister 300, but the scope of the present invention is not limited thereto. The feed roller 600 may be installed on the outer wall of the canister 300 to be spaced apart by a predetermined interval.

The elevating device 500 serves to elevate the canister 300 and the thruster 200 in the space 410 of the trunk 400. The lifting device 500 includes a cable 510 connected to the canister 300, a cable winding unit 530 installed on the deck 130 of the hull 100, and winding the cable 510, and a cable 510. It includes a first sensing unit (not shown) for detecting the change in the length of the.

The cable 510 may be a wire rope, a chain, or the like. One end of the cable 510 is connected to the canister 300, and the other end is repeatedly wound or unwound by the cable winding unit 530.

One end of the cable 510 is connected to the protrusion 310 installed in the lower portion of the canister 300 in more detail. This is to minimize the shake of the canister 300 due to disturbances such as waves when lifting the canister 300.

The cable winding unit 530 is installed on the deck 130 of the hull 100 and winds or unwinds the cable 510 connected to the canister 300 to open the canister 300 and the thruster 200 in the trunk 400. It serves to elevate in the space 410 of the. The cable winding unit 530 may be installed in a plurality around the trunk (400).

The cable winding unit 530 is installed on the deck 130 of the hull 100, the winch (531, winch) for winding the cable 510, and the cable 510 connected to the canister 300 winch ( A first pulley 550 to guide 531. When the first pulley 550 is installed on the deck as in the present embodiment, the unwinding part 551 for fixing the first pulley 550 on the deck may be installed on the deck. Guide member, that is, the transport roller 600 in the present embodiment may be installed on one side.

The winch 531 rotates by an electric motor, a hydraulic motor, a hydraulic cylinder, and a combination thereof, and the cable 510 is repeatedly wound or unrolled from the drum portion 533 constituting the winch 531. . The first pulley 550 is installed on the deck 130 of the hull 100 and is disposed between the winch 531 and the canister 300. In addition, the first pulley 550 is disposed in front of the drum portion 533 of the winch 531. At this time, the first pulley 550 is horizontally in the direction of the drum portion 533 of the winch 531 installed in the upper portion of the deck 130, the cable 510 connected vertically to the canister 300 using a fixed pulley. Switch.

On the other hand, the lifting device 500 raises and lowers the canister 300. More specifically, the elevating device 500 includes a first position (aka, dynamic positioning mode) in which the thruster 200 is disposed below the bottom surface 110 of the hull to allow magnetic position control of the hull 100. ) And a second thruster 200 which is disposed between the bottom surface 110 of the hull and the draft line 150 in which the hull is submerged in the seawater to reduce resistance when the ship is operated. Position (aka Transit mode) and thruster (200) located above the waterline (150) to be placed in a third position (aka Maintenance mode) for performing operations such as installation, removal, repair, and maintenance. Can be.

Meanwhile, a first sensing unit (not shown) may be installed on the winch 531. The first sensing unit detects a change in length of the cable 510 wound on the drum unit 533 of the winch 531 so that the thruster 200 can be accurately positioned at the first, second, and third positions. do. The first sensing unit detects the change in the length of the cable 510 by grasping the rotation direction and the number of rotations of the drum 533, and the canister 300 and the thruster 200 by using the detected change in the length of the cable 510. ) Position. In this case, the first sensing unit may be installed in the driving motor for driving the winch 531 to detect the rotation direction and the rotation speed of the motor.

In addition, the ship having a retractable thruster according to the present embodiment, based on the signal sensed by the first sensing unit, the operation of the winch 531 of the lifting device 500, in particular, the lifting device 500 in the present embodiment. It may further include a control unit (not shown) for controlling. The controller controls the operation of the winch 531 based on the signal sensed by the first sensing unit, and at the same time, the locking pin 710 installed in the trunk 400 is inserted into the groove 730 installed in the canister 300. It may be possible to control the operation of the locking pin 710. However, the scope of the present invention is not limited thereto, and the locking pin controller for controlling the operation of the locking pin 710 may be provided separately from the controller.

Meanwhile, in addition to the first sensing unit of the elevating apparatus 500, a second sensing unit (not shown) for identifying a position in the space 410 of the trunk 400 according to the rising and falling of the canister 300. Can be installed. The second sensing unit may include a limit sensor and may be installed on the upper portion of the canister 300.

In addition, in the case of performing repair, maintenance, or the like on the thruster 200, the space part 410 of the trunk 400 may be easily accessible to the thruster 200 and may safely realize the work. The maintenance space 430 may be formed. Maintenance space 430 is located on the upper side of the water line 150, it is possible to ensure a sufficient space so that the operator can be loaded after separating the propeller 210, etc. of the thruster (200).

On the other hand, the vessel provided with a retractable thruster according to an embodiment of the present invention, the canister 300 is fixed to the trunk 400 so that the thruster 200 is stably positioned in the first, second, and third positions. It further comprises a locking device 700. The locking device 700 serves to prevent the canister 300 from swinging against disturbance.

The locking device 700 includes a plurality of locking pins 710 installed on the space part 410 of the trunk 400, that is, the inner wall of the trunk 400 at predetermined intervals, and the outer wall of the canister 300. It is formed to be spaced apart a predetermined interval includes a plurality of grooves 730 is inserted into a plurality of locking pins 710. Here, the locking pin 710 may be installed to be sunk into the space 410 by the hydraulic system.

When it is determined that the thruster 200 has reached the desired position among the first, second, and third positions through at least one of the first sensing unit and the second sensing unit, the winch 531 is stopped and the locking pin ( The 710 protrudes into the space 410 and is inserted into the groove 730. By combining the locking pin 710 and the groove 730, the canister 300 is fixed on the space 410, and the thruster 200 may be stably disposed at a desired position.

Referring to the operation of introducing the thruster to the hull according to an embodiment of the present invention configured as described above are as follows.

3 is a cross-sectional view showing a state in which the thruster is located in the first position according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing a state in which the thruster is located in the second position, according to an embodiment of the present invention, 5 is a cross-sectional view illustrating a state in which a thruster is positioned at a third position according to an embodiment of the present invention.

As shown in FIG. 3, when the magnetic propulsion control of the ship by the main propulsion device is difficult or impossible, the thruster 200 is disposed below the bottom surface 110 of the hull, that is, in the first positioning position. The canister 300 and the thruster 200 are lowered in the space 410 by rotating the winch 531.

At this time, the canister 300 is finally lowered by the protrusion 310 installed in the lower portion and the stopper 450 installed in the trunk 400, thereby, the thruster 200 is precisely disposed in the first position do. Then, the locking pin 710 installed in the trunk 400 is inserted into the groove 730 installed in the canister 300 so that the thruster 200 is stably fixed in the first position.

And, as shown in Figure 4, during operation of the ship when the thruster 200 is disposed below the bottom surface 110 of the hull acts as a resistor, the thruster 200 is drawn into the interior of the hull 100 Needs to be. Therefore, when the thruster 200 is to be introduced into the hull 100 and placed in the second position (Transit mode), the winch 531 is rotated to rotate the canister 300 and the thruster 200 into the space part. Raise to 410.

In addition, the length change of the cable 510 and the position of the canister 300 are sensed by the space sensing unit 410 using any one or more of the first sensing unit and the second sensing unit, and through this, the thruster 200 I can figure out the location. Therefore, when it is determined that the thruster 200 is raised to the second position, the controller (not shown) stops the operation of the winch 531 and the trunk so that the thruster 200 is stably fixed at the second position. The locking pin 710 installed in the 400 may be controlled to be inserted into the groove 730 installed in the canister 300. In the present embodiment, the control unit controls the operation of the lifting device 500, in particular the operation of the winch 531 and the operation of the locking pin 710, but the scope of the present invention is not limited thereto, the operation of the winch 531 The actuation of the locking pin 710 may be manually operated.

In addition, as shown in FIG. 5, when the thruster 200 needs to be repaired and repaired, the thruster 200 is to be inserted into the hull 100 to be placed in a third position (Maintenance mode). The winch 531 is rotated to raise the canister 300 and the thruster 200 in the space 410. In addition, the length change of the cable 510 and the position of the canister 300 are sensed by the space sensing unit 410 using any one or more of the first sensing unit and the second sensing unit, and through this, the thruster 200 Know your location.

Therefore, when it is determined that the thruster 200 is raised to the third position where the maintenance space 430 is formed, the controller (not shown) stops the operation of the winch 531 and the thruster 200 is removed. The locking pin 710 installed in the trunk 400 may be controlled to be inserted into the groove 730 installed in the canister 300 so as to be stably fixed at the 2 position.

As described above, when using the elevating device 500 of the present embodiment including the cable 510 and the cable winding unit 530 having the winch 531 and the first pulley 550, the canister as in the prior art. It is possible to reduce the weight than installing the rack gear and pinion gear in the 300 and the trunk 400, respectively, and the lifting device 500 can reduce the manufacturing cost and production period because the configuration is simple, the deck 130 The height of the canister 300 protruding to the top of the) can be reduced, and since the cable winding unit 530 is installed on the deck 130, its maintenance is easy.

Hereinafter, with reference to the accompanying drawings, it will be described in detail with respect to the vessel provided with a retractable thruster according to another embodiment of the present invention.

6 is a perspective view showing a ship having a retractable thruster according to another embodiment of the present invention, Figure 7 is a cross-sectional view showing a ship with a retractable thruster according to another embodiment of the present invention.

6 and 7, a vessel provided with a retractable thruster according to another embodiment of the present invention is coupled to the thruster 200a and the upper portion of the thruster 200a to provide the thruster 200a. Trunk 400a having a canister 300a installed therein and a hull 100a provided therein and a space portion 410a in which the thruster 200a and the canister 300a move up and down. And a lifting device 500a including a cable 510a connected to the canister 300a and a hydraulic cylinder 530a connected to the cable 510a to pull and release the cable 510a, and the canister 300a. And a guide member 600a for guiding the lifting and lowering of the < RTI ID = 0.0 >), < / RTI >

The thruster 200a is installed below the bottom surface 110a of the hull to propel, reverse propel or rotate the ship, and provides a driving force for controlling the position of the ship. Since the thruster 200a is the same as described in the above-described embodiment of the present invention, a detailed description thereof will be omitted.

The canister 300a is coupled to the upper portion of the thruster 200a to transmit power to the thruster 200a. Since the canister 300a is the same as described above in the embodiment of the present invention, a detailed description thereof will be omitted.

The trunk 400a is formed perpendicular to the hull 100a, and serves as a passage through which the thruster 200a and the canister 300a move up and down. At this time, the trunk (400a) may be formed to be open (바닥 口) from the bottom surface (110a) of the hull to the deck (130a). Trunk 400a is the same as described in the above embodiment of the present invention, so a detailed description thereof will be omitted.

In addition, a stopper 450a protruding into the interior of the space 410a is installed on the inner wall of the trunk 400a under the space 410a, and a protrusion 310a protruding from the outer circumferential surface of the lower portion of the canister 300a. Install it.

 Since the protrusion 310a and the stopper 450a are the same as described above in the exemplary embodiment of the present invention, a detailed description thereof will be omitted.

6 and 7, the guide member 600a may be installed on any one of an inner wall of the trunk 400a and an outer wall of the canister 300a, and the guide member 600a may be installed on the trunk 400a. When installed on the inner wall of the canister (300a) when the lifting guide member (600a) supports the outer wall of the canister (300a) serves to guide the canister (300a) to be raised and lowered in the space 410a. . Here, the guide member 600a is, in this embodiment, a plurality of feed roller 600a is applied so that the canister 300a can be raised and lowered stably. Since the feed roller 600a is the same as described in the embodiment of the present invention, a detailed description thereof will be omitted.

In addition, the elevating device 500a serves to elevate the canister 300a and the thruster 200a in the space 410a of the trunk 400a. The elevating device 500a is connected between both ends of the cable 510a having one end connected to the canister 300a and the other end connected to the hull 100a, and pulling and releasing the cable 510a. Hydraulic cylinder 530a for performing a, and a first sensing unit (not shown) for detecting a change in the length of the cable 510a.

The cable 510a may be applied with a wire rope, a chain, and the like, one end of the cable 510a is connected to the protrusion 310a of the canister 300a, and the other end is connected to the deck 130a of the hull 100a. .

In addition, the hydraulic cylinder 530a may be installed in plural inside the hull between the trunk 400a and the watertight bulkhead, and the canister 300a and the thruster 200a are elevated in the space 410a. Play a role.

In addition, the elevating device 500a includes a first pulley 550a installed on an upper portion of the deck 130a and a cable 510a coupled to the hull 100a through the first pulley 550a. ) And a second pulley 570a supporting between the hull 100a and the cylinder rod 531a of the hydraulic cylinder 530a is coupled to the second pulley 570a to expand and contract.

For example, the first pulley 550a is installed on the upper part of the deck 130a, and the second pulley 570a is installed between the first pulley 550a and one end of the cable 510a connected to the deck 130a. The cable 510a is sequentially wound. Here, the first pulley 550a may use a high pulley, and the second pulley 570a may use a pulley.

Then, the cylinder rod 531a of the hydraulic cylinder 530a is connected to the second pulley 570a. In addition, the hydraulic cylinder 530a may be installed in the height direction of the hull 100a in the hull between the trunk 400a and the watertight partition wall adjacent to the side of the trunk 400a.

When the cylinder pulley 531a of the hydraulic cylinder 530a is contracted by the length 'S' in the downward direction of the hull 100a when the second pulley 570a is a pulley, the cable 510a connected to the canister 300a is The canister 300a is raised above the trunk 400a by the length '2S'. The cylinder rod 531a of the hydraulic cylinder 530a maintains its elongated state when the thruster 200a is disposed in the first position (Dynamic positioning mode), and according to the contraction of the cylinder rod 531a, 200a rises to the second position (Transit mode) and the third position (Maintenance mode) in the space portion 410a.

As such, since the hydraulic cylinder 530a takes the maximum load when the cylinder rod 531a is pulled, there is no fear of buckling, and the canister 300a can be raised and lowered by twice the distance that the cylinder rod 531a moves. The space occupied and installed in the hull 100a can be minimized.

The first sensing unit (not shown) may be installed on the cylinder rod 531a of the elevating device 500a, in particular, the hydraulic cylinder 530a to detect the change in the length of the cable 510a. The first sensing unit detects the length change of the cable 510a connected to the canister 300a by grasping the extension and contraction length of the cylinder rod 531a, and uses the detected change in the length of the cable 510a to provide a thruster ( Find the location of 200a).

In addition, the ship having a retractable thruster according to the present embodiment, the control unit for controlling the operation of the hydraulic cylinder 530a of the lifting device 500a, in particular the lifting device 500a based on the signal sensed by the first sensing unit. It may further include (not shown). The controller controls the operation of the hydraulic cylinder 530a based on the signal sensed by the first sensing unit, and at the same time, the locking pin 710a installed in the trunk 400a is provided in the groove 730a installed in the canister 300a. It may be possible to control the operation of the locking pin 710a to be inserted. However, the scope of the present invention is not limited thereto, and a locking pin controller for controlling the operation of the locking pin 710a may be separately provided.

Meanwhile, apart from the first sensing unit of the elevating apparatus 500a, a second sensing unit (not shown) may be installed on the upper portion of the canister 300a, and the second sensing unit may be the same as described above in the embodiment of the present invention. Since the same, detailed description thereof will be omitted.

In addition, the maintenance space 430a may be formed in the space portion 410a of the trunk 400a, and the maintenance space 430a is the same as described in the above-described embodiment of the present invention. It will be omitted.

The locking device 700a may be installed to fix the canister 300a to the trunk 400a such that the thruster 200a is stably positioned at the first, second, and third positions. The locking device 700a serves to prevent the canister 300a from swinging against disturbance. Since the locking device 700a is the same as described above in the embodiment of the present invention, a detailed description thereof will be omitted.

Referring to the operation of introducing the thruster (200a) to the hull (100a) according to another embodiment of the present invention configured as described above are as follows.

8 is a cross-sectional view showing a state in which the thruster is located in the first position according to another embodiment of the present invention, Figure 9 is a cross-sectional view showing a state in which the thruster is located in the second position according to another embodiment of the present invention, 10 is a cross-sectional view illustrating a state in which a thruster is positioned at a third position according to another embodiment of the present invention.

As shown in FIG. 8, in the case where it is difficult or impossible to control the magnetic position of the ship by the main propulsion device, the thruster 200a is disposed under the bottom surface 110a of the hull, that is, in the first positioning position (Dynamic positioning mode). The cylinder rod 531a of the hydraulic cylinder 530a is extended to lower the canister 300a and the thruster 200a in the space 410a. At this time, the canister 300a is limited by the downward movement by the protrusion 310a installed in the lower portion and the stopper 450a installed in the trunk 400a, whereby the thruster 200a is accurately disposed in the first position. . Then, the locking pin 710a provided in the trunk 400a is inserted into the groove 730a provided in the canister 300a so that the thruster 200a is stably fixed in the first position.

In addition, as shown in FIG. 9, when the thruster 200a is disposed below the bottom surface 110a of the hull during a ship operation, the thruster 200a is introduced into the hull 100a because the thruster 200a acts as a resistor. Needs to be. Therefore, when the thruster 200a is to be introduced into the hull 100a and placed in the second position (Transit mode), the cylinder rod 531a of the hydraulic cylinder 530a is contracted to allow the canister 300a and the thruster. The stud 200a is raised to the space 410a. At this time, twice the contraction length of the cylinder rod 531a is the distance at which the canister 300a and the thruster 200a rise in the space 410a.

Then, the length change of the cylinder rod 531a and the position of the canister 300a are sensed in the space part 410a by using any one or more of the first sensing part and the second sensing part, and through this, the thruster 200a. I can figure out the position of. Therefore, when it is determined that the thruster 200a is raised to the second position, the controller (not shown) stops the contracting operation of the cylinder rod 531a, and the thruster 200a is stably fixed at the second position. The locking pin 710a installed in the trunk 400a may be controlled to be inserted into the groove 730a installed in the canister 300a.

In addition, as shown in FIG. 10, when the thruster 200a needs to be repaired and repaired, and the thruster 200a is to be introduced into the hull 100a and placed in the third position (Maintenance mode). The cylinder rod 531a of the hydraulic cylinder 530a is further contracted to raise the canister 300a and the thruster 200a in the space 410a. Then, the length change of the cylinder rod 531a and the position of the canister 300a are sensed in the space part 410a by using any one or more of the first sensing part and the second sensing part, and through this, the thruster 200a. Know the location of the.

As described above, twice the contraction length of the cylinder rod 531a is a distance at which the canister 300a and the thruster 200a rise in the space portion 410a. Therefore, when it is determined that the thruster 200a is raised to the third position in which the maintenance space 430a is formed, the control unit stops the contraction operation of the cylinder rod 531a, and the thruster 200a is connected to the third position. The locking pin 710a installed in the trunk 400a to be stably fixed in position controls the operation of the locking pin 710a to be inserted into the groove 730a installed in the canister 300a. In the present embodiment, the control unit controls the operation of the lifting device 500a, in particular the operation of the hydraulic cylinder 530a and the operation of the locking pin 710a, but the scope of the present invention is not limited thereto, the hydraulic cylinder 530a The operation of and the operation of the locking pin 710a may be manually operated.

As described above, the elevating device 500a of the present embodiment includes a cable 510a, a first pulley 550a with a fixed pulley, a second pulley 570a with a pulley, and a hydraulic cylinder 530a. When using, it is possible to avoid the hassle of repeating the stretching operation while continuously changing the fixed position of the short hydraulic cylinder (530a) as in the prior art, the configuration is simple, it can reduce the production cost and production period, Since the hydraulic cylinder 530a may be installed inside the hull 100a, the space occupied by the hydraulic cylinder 530a may be minimized, and the height of the canister 300a protruding to the upper portion of the deck 130a may be reduced. Maintenance of the elevating device 500a provided with the hydraulic cylinder 530a is easy.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

100, 100a: hull 110, 100a: bottom of hull
130, 130a: deck 200, 200a: thruster
210, 210a: propellers 230, 230a: hub
250, 250a: Circular nozzle cover 270, 270a: Vertical axis
300, 300a: canister 310, 310a: protrusion
400, 400a: trunk 410, 410a: space part
430, 430a: Maintenance space 450, 450a: Stopper
500, 500a: Lift 510, 510a: Cable
530: cable winding unit 531: winch
533: Drum 550, 550a: First Pulley
530a: hydraulic cylinder 531a: cylinder rod
570a: second pulley 600, 600a: guide member
700, 700a: locking device 710, 710a: locking pin
730, 730a: groove

Claims (15)

Thruster;
A canister coupled to an upper portion of the thruster and driving the thruster;
A trunk provided in the hull and having a space part in which the thruster and the canister are lifted and raised; And
At least one cable having one end connected to the canister, and a cable winding unit installed at the hull to wind up the other end of the at least one cable, the elevating apparatus for elevating the thruster and the canister in the space. A ship having a retractable thruster, characterized in that it comprises a. The method of claim 1,
The cable winding unit,
A plurality of winches installed on the hull to wind the cable; And
And a first pulley disposed between the winch and the canister, the first pulley installed on the hull and guiding the cable connected to the canister to the winch. The method of claim 2,
The first pulley is a vessel provided with a retractable thruster, characterized in that the pulley. Thruster;
A canister coupled to an upper portion of the thruster and driving the thruster;
A trunk provided in the hull and having a space part in which the thruster and the canister are lifted and raised; And
One end is connected to the canister and the other end is provided with at least one cable connected to the hull, and the hydraulic cylinder is connected between both ends of the at least one cable to perform the operation of pulling and unwinding the cable, the thruster And a hoisting device for elevating a canister from a space part of the trunk. 5. The method of claim 4,
The lift device,
A first pulley installed on the deck; And
And a second pulley for supporting the cable coupled to the hull past the first pulley between the first pulley and the hull,
And a cylinder rod of the hydraulic cylinder is coupled to the second pulley to expand and contract. The method of claim 5,
And the first pulley is a fixed pulley and the second pulley is a movable pulley. 5. The method of claim 4,
The hydraulic cylinder is a ship having a retractable thruster, characterized in that installed in the height direction of the hull inside the hull. The method according to claim 1 or 4,
And at least one guide member installed at any one of an inner wall of the trunk and an outer wall of the canister to form the space, and for guiding the lifting and lowering of the canister. 9. The method of claim 8,
The at least one guide member is a plurality of feed rollers are installed on the inner wall of the trunk forming the space portion to support the outer wall of the canister, the plurality of feed rollers are spaced apart from each other in the vertical direction. Ship with a stirrer. The method according to claim 1 or 4,
In order to limit the downward movement in the space portion of the canister, a lower portion of the canister is provided with a protrusion projecting from the outer peripheral surface, the inner wall of the trunk of the lower space portion is provided with a stopper for seating the protrusion Ships with retractable thrusters. The method of claim 10,
And one end of the cable is coupled to the protrusion. The method according to claim 1 or 4,
The thruster is positioned at a first position corresponding to the bottom surface of the hull, a second position corresponding to the draft surface in which the hull is submerged in the seawater, and a third position corresponding to the upper side of the draft line. A ship having a retractable thruster, characterized in that it further comprises a locking device for fixing. The method of claim 12,
The locking device,
A plurality of locking pins spaced apart from each other in the trunk forming the space part; And
And a plurality of grooves provided on the outer wall of the canister to be spaced apart from each other and into which the plurality of locking pins are inserted. The method according to claim 1 or 4,
The lift device,
And a first sensing unit for detecting a change in the length of the cable. 15. The method of claim 14,
A second sensing unit provided on an upper portion of the canister to sense a position of the canister; And
And a control unit for controlling the elevating device based on a signal sensed by at least one of the first sensing unit and the second sensing unit.

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