Deck lifting system and ship including same

Abstract

To provide a deck lifting system capable of selectively driving a plurality of decks or driving them at once in an efficient method.SOLUTION: A system includes: a plurality of deck units including a moving deck 150 coupled to a frame 130 in a perpendicular direction to be capable of moving, a slide unit 140 coupled to the frame in a horizontal direction to be capable of moving, a plurality of deck units including lifting wires 160 with one end unit coupled to the moving deck and the other end unit coupled to the slide unit via a direction conversion sheave 131 provided on the frame; first sheaves 110 provided on every deck unit fixed to the frame; a second sheaves 120 coupled to the slide unit and having space between the first sheave adjusted along with movement of the slide unit; a drive wire 200 transmitting driving force to the slide unit by simultaneously wrapping the first sheave and the second sheave of respective deck units via a plurality of deck units; and a driving machine 210.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a deck lifting system that can be used for loading vehicles, etc., and a ship including the same, and more particularly to a deck lifting system that can selectively drive multiple decks or drive them all at once, and a ship including the same. [Background technology]

[0002] Specialized equipment may be used to load and unload vehicles. Among ships that specialize in transporting vehicles, RO-RO ships (Roll-on Roll-off vessels) are a type of cargo ship that transports general vehicles, trucks, trailers, etc. Because vehicles can move on their own, RO-RO ships have the advantage that vehicles can be moved and loaded / unloaded directly without the need for a separate crane.

[0003] RO-RO ships are designed so that vehicles capable of moving by themselves can be rolled on and off the ship via a ramp, either directly or by transport equipment such as trucks or trailers. However, since the vehicles loaded onto ships range from passenger cars to medium-sized and large heavy equipment, it is necessary to increase the loading capacity by utilizing the space in the cargo hold.

[0004] For example, passenger cars have a lower overall height than medium- to large-sized heavy equipment, which can result in wasted cargo hold volume. Therefore, in order to increase the loading capacity of passenger cars, a separate lift device (mobile deck lifter or deck hoisting system) has been installed in the cargo hold, and passenger cars have been loaded in multiple layers (for example, Korean Patent Registration No. 10-2316013).

[0005] However, most conventional lifting devices have problems such as a high load on the drive system and inefficient drive due to a complex fixing structure. Furthermore, the device is large in volume and requires a large installation space, making it difficult to adapt to the size of the ship. These problems have not been adequately solved, and an alternative solution is needed.

[0006] On the other hand, there are many cases where parking towers are installed to utilize narrow parking spaces in buildings, etc., but in spaces where it is difficult to install a parking tower, it is necessary to divide one floor and use it as multiple floors.In addition, warehouses for loading goods and containers for freight vehicles also need to be used by adjusting the loading space according to the size of the goods. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Korean Patent Registration No. 10-2316013 (October 22, 2021) Summary of the Invention [Problem to be solved by the invention]

[0008] In order to solve these problems, the technical object of the present invention is to provide a deck lifting system that has an efficient operating structure and can selectively drive multiple decks in an efficient manner or drive them all at once, and further to provide a ship including the same.

[0009] The technical problems of the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0010] The deck lifting system according to the present invention includes a frame, a movable deck connected to the frame so as to be vertically movably, a slide unit connected to the frame so as to be horizontally movably, and a plurality of deck units including a plurality of lifting wires, one end of which is connected to the movable deck and the other end of which is connected to the slide unit via a direction-changing sheave provided on the frame; a first sheave provided for each of the deck units and fixed to the frame; a second sheave provided for each of the deck units and connected to the slide unit, the distance between which and the first sheave is adjusted as the slide unit moves; a drive wire that passes through the plurality of deck units and is wound around the first sheave and the second sheave of each deck unit simultaneously to transmit a driving force to the slide unit; and a driver that pulls the drive wire to slide the slide unit.

[0011] The deck unit may further include a fixing unit provided on the deck unit and configured to restrict or release the slide unit to selectively change the position of only the second sheave of at least one of the deck units.

[0012] The fixing unit may be provided on at least one of the slide unit and the frame, and when the slide unit reaches a fixed position, at least a portion of the fixing unit may protrude from the slide unit or the frame to restrict movement of the slide unit.

[0013] The fixing unit includes a fixing block that is protruded by a driving device and inserted from the slide unit into the frame or inserted from the frame into the slide unit, and the driving device may be operated by at least one of hydraulic force, electric force, and magnetic force.

[0014] The fixing unit may include a drive motor that drives a pinion gear, a rack bar that meshes with the pinion gear and moves linearly, and the fixing block that is connected to the rack bar and inserted from the slide unit into the frame or inserted from the frame into the slide unit.

[0015] The first sheave and the second sheave may be arranged such that an imaginary line connecting the respective rotation shafts is in the same direction as the direction in which the drive wire extends through the deck unit.

[0016] The drive wire may extend parallel to the direction of movement of the slide unit.

[0017] The first sheave and the second sheave may have the same diameter.

[0018] The second sheave and the lifting wire are respectively connected to both ends of the slide unit along the imaginary line, the second sheave is positioned inside opposite the first sheave, and the lifting wire extends outward and can be connected to the moving deck via the direction-changing sheave.

[0019] The drive wire may include a first section that enters one of the deck units from the driver or an adjacent deck unit and contacts one of the first sheave and the second sheave, a second section that contacts the remaining one of the first sheave and the second sheave and extends to another adjacent deck unit, and a third section that simultaneously contacts the first sheave and the second sheave.

[0020] One of the first sheave and the second sheave may be disposed inclined relative to the other, and the first section and the second section may be positioned at different heights.

[0021] At least one of the first sheave and the second sheave may be configured with a plurality of sheaves stacked on the same rotation axis.

[0022] The drive wire may be wound multiple times simultaneously between the first sheave and the second sheave and extend to an adjacent deck unit.

[0023] Depending on the number of the second sheaves whose positions change, one of the moving decks among the plurality of deck units may rise and fall, or the plurality of moving decks may rise and fall simultaneously.

[0024] A vessel including the deck lifting system of the present invention may include a hull; and a deck lifting system provided inside the hull. [Effects of the Invention]

[0025] According to the present invention, a deck on which a vehicle or the like is loaded can be raised and lowered in an efficient manner. A structure that appropriately distributes the load on the deck can reduce the load on the drive mechanism, and multiple decks that are separated from each other can be operated very efficiently in this manner. Furthermore, multiple decks can be selectively operated by simply and efficiently selecting the lifting deck, which is also advantageous for operating one or multiple decks at a time. Therefore, advantages over the prior art can be obtained in processes such as vehicle loading.

[0026] In addition, the power transmission structure using wires allows for relatively free placement of deck units, making it possible to install it on ships of various shapes, and it has the advantage of being easily applicable to parking systems, warehouses, containers, etc. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a perspective view showing a portion of a deck lifting system according to an embodiment of the present invention. FIG. [Figure 2] 1A and 1B are plan and front views of a deck lifting system according to one embodiment of the present invention; [Figure 3] 3 is a conceptual diagram for explaining the winding structure of the drive wire and the method of transmitting the drive force of the deck lifting system of FIG. 2. FIG. [Figure 4]3 is a perspective view showing the winding structure and operation method of the drive wire of the deck lifting system of FIG. 2. FIG. [Figure 5] 3 is an enlarged front view showing the winding structure of the first sheave and the second sheave of the deck lifting system of FIG. 2. FIG. [Figure 6] 3 is an enlarged view of a slide unit of the deck lifting system of FIG. 2. FIG. [Figure 7] 3A and 3B are an enlarged plan view and a front view showing one of the deck units included in the deck lifting system of FIG. 2. [Figure 8] FIG. 8 is an operation diagram of the deck unit of FIG. 7. [Figure 9] 10A and 10B are diagrams showing modified examples of the first sheave and the second sheave. [Figure 10] FIG. 3 is an operation diagram of the entire deck lifting and lowering system of FIG. 2. [Figure 11] FIG. 3 is an operation diagram of the entire deck lifting and lowering system of FIG. 2. [Figure 12] 1 is a conceptual diagram of a vessel including a deck lifting system according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0028] The advantages and features of the present invention, as well as methods for achieving them, will become clearer with reference to the following detailed embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and can be realized in various different forms. The present embodiments are provided solely to complete the disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art to which the present invention pertains. The present invention is defined solely by the claims. The same reference symbols refer to the same elements throughout the specification.

[0029] Hereinafter, a deck lifting system and a ship including the same according to the present invention will be described in detail with reference to Figures 1 to 12. First, the deck lifting system will be described in detail with reference to Figures 1 to 11, and then a ship including the deck lifting system will be described in detail with reference to Figure 12.

[0030] FIG. 1 is a perspective view showing a part of a deck lifting system according to one embodiment of the present invention, and FIG. 2 is a plan view and a front view of the deck lifting system according to one embodiment of the present invention.

[0031] 1 and 2, the deck lifting system 10 according to the present invention is formed of a plurality of deck units 100, each including a moving deck 150. Each deck unit 100 has substantially the same structure, and each uses a driving force provided by a driving wire 200 to lift and lower the moving deck 150 (see FIG. 8).

[0032] The drive wire 200 passes through each deck unit 100. The drive wire 200 passes through multiple deck units 100 and is arranged in a manner that it simultaneously winds around and unwinds from a first sheave 110 and a second sheave 120 provided on each deck unit 100. The first sheave 110 of each deck unit 100 is fixed, and the second sheave 120 is connected to the slide unit 140 and is movable, so that the second sheave 120 acts as a kind of movable pulley (see FIG. 3(d)). Therefore, when the drive wire 200 is pulled to move the second sheave 120, the movable deck 150 can be lifted using the connecting structure (slide unit and lifting wire) connected thereto.

[0033] The second sheave 120 and the slide unit 140 can be selectively constrained or released using a fixing unit (see 142 in FIG. 6). Therefore, only the necessary deck units 100 can be selected and operated from among the multiple deck units 100, and multiple deck units 100 can also be operated simultaneously.

[0034] The deck lifting system 10 of the present invention is configured as follows: The deck lifting system 10 includes a frame 130, a moving deck 150 connected to the frame 130 so as to be vertically movable, a slide unit 140 connected to the frame 130 so as to be horizontally movable, a plurality of deck units 100 each including a plurality of lifting wires 160 each having one end connected to the moving deck 150 and the other end connected to the slide unit 140 via a direction-changing sheave 131 provided on the frame 130, and a first sheave 160 provided for each deck unit 100 and fixed to the frame 130 of each deck unit 100. The system includes a sheave 110, a second sheave 120 that is provided for each deck unit 100 and is coupled to the slide unit 140 of each deck unit 100 so that the distance between the first sheave 110 and the second sheave 120 is adjusted as the slide unit 140 moves, a drive wire 200 that passes through the multiple deck units 100 and winds around the first sheave 110 and the second sheave 120 of each deck unit 100 simultaneously to transmit driving force to the slide unit 140, and a driver 210 that pulls the drive wire 200 to slide the slide unit 140.

[0035] In one embodiment of the present invention, the deck lifting system 10 may further include a fixing unit (see 142 in FIG. 6 ) that is provided on the deck unit 100 and that restricts or releases the restriction on the slide unit 140 to selectively change only the position of the second sheave 120 of at least one of the deck units 100. The fixing unit 142 may be provided on at least one of the slide unit 140 and the frame 130 of each deck unit 100, and when the slide unit 140 reaches the fixed position, at least a portion of the fixing unit 142 protrudes from the slide unit 140 or the frame 130 to restrict the movement of the slide unit 140.

[0036] In this embodiment, an example in which a fixing unit 142 is provided on each slide unit 140 will be described. However, since the fixing unit serves to restrain or release the restraint of the slide unit 140, it may be provided on the frame side or on both the slide unit and the frame. Therefore, the technical concept of the present invention is not limited to this embodiment. The configuration, operation, and effects of the present invention will be described in more detail below based on one embodiment of the present invention.

[0037] 1 and 2, a plurality of deck units 100 are formed. The number of deck units 100 can be increased or decreased as needed, so the illustrated structure can be extended as needed to form a deck lifting system 10 including a plurality of deck units 100. Such deck lifting systems 10 can also be arranged one above the other to form a multi-layered structure. This arrangement will be described in more detail below with reference to a ship including the deck lifting system 10 (see 1 in FIG. 12).

[0038] Referring to FIG. 1, one deck unit 100 may include a frame 130, a moving deck 150, a slide unit 140, and a lifting wire 160. A loading space is formed inside the frame 130, and the moving deck 150 moves up and down within the interior space of the frame 130, changing its height (see FIG. 8). The lifting wire 160 connects the slide unit 140 and the moving deck 150 via a direction-changing sheave 131 provided on the frame 130. Therefore, when the slide unit 140 moves, the lifting wire 160 pulls the moving deck 150, allowing it to be raised and lowered.

[0039] The structure of the deck units 100 is substantially the same for the multiple deck units 100. Although some deck units 100 may be partially modified, such as having a larger loading space than other deck units 100, the drive structure is substantially the same. Therefore, the structural aspects of one deck unit 100 will be described in more detail with reference to FIG. 1. The following description also applies to the other deck units 100.

[0040] Referring to FIG. 1, the frame 130 of the deck unit 100 may be formed as a rectangular frame with an empty interior. While FIG. 1 does not show the frame 130 in detail to show the internal structure, the plan view (FIG. 2(a)) and front view (FIG. 2(b)) of FIG. 2 show the structure in detail. The frame 130 may be, for example, a rectangular framework including corners, and the sides may be open. Reinforcements may be placed at the top and bottom of the frame 130 to add strength. The frame 130 is not limited to an artificial structure for installing the deck unit 100. When used on a ship, the frame 130 may be part of the hull structure. When used in a parking system or loading system inside a building, the frame 130 may be part of the building structure. In other words, the frame 130 may be any structure, regardless of shape or size, that can accommodate the deck lifting system 10 at the location where the deck unit 100 is to be installed.

[0041] The moving deck 150 is coupled to the inside of the frame 130 so as to be vertically movable. The moving deck 150 may be a planar structure, arranged horizontally and capable of translation (rising and lowering) in the vertical direction, as shown in FIGS. 1 and 2. Although not shown in the drawings, guide rails (not shown) for guiding the vertical movement of the moving deck 150 may be provided on the pillars of the frame 130, and a locking structure (not shown) for fixing the moving deck 150 to the frame 130 by protruding or recessing as needed may be formed on the side of the moving deck 150. Such structures may be applied as needed.

[0042] The slide unit 140 may be disposed on the upper part of the frame 130. For example, the slide unit 140 may be coupled to a slide rail 132 horizontally installed on the frame 130 and move along the slide rail 132. The slide unit 140 is coupled to the frame 130 so as to be able to slide horizontally. The slide unit 140 is coupled to the second sheave 120 and acts to make the second sheave 120 a movable structure (i.e., the second sheave is coupled to the slide unit and moves integrally therewith). In addition, since the slide unit 140 is also connected to the lift wire 160, it moves as the second sheave 120 moves, thereby pulling the lift wire 160. The specific structure of the slide unit 140 will be described in more detail below.

[0043] For convenience, the slide unit 140 has been described as being disposed on the top of the frame 130, but due to the characteristics of the wire-driven system, the slide unit 140 is not necessarily limited to being disposed on the top of the frame 130. In other words, the slide unit 140 can be installed on the side or bottom of the frame 130 or in a position somewhat separated from the deck unit 100, as long as there is space for power transmission via a wire.

[0044] In this specification, the main body of the slide unit 140 (see 141 in FIG. 6) is shown by imaginary lines to show the internal structure, so please refer to this.

[0045] 1, one end of the lifting wire 160 is connected to the moving deck 150, and the other end is connected to the slide unit 140 via a diverting sheave 131 provided on the frame 130. A plurality of lifting wires 160 may be formed and connected to each corner of the moving deck 150. For example, one lifting wire 160 may have one end connected to the moving deck 150, and the other end connected to the rear of the slide unit 140 via at least one diverting sheave 131. The lifting wire 160 may be bent by the diverting sheave 131, changing its direction of travel.

[0046] The diverting sheaves 131 may be provided on the upper part of the frame 130. As shown in Fig. 1, the diverting sheaves 131 are provided at positions corresponding to the four corners of the moving deck 150, respectively, and the lifting wires 160 may be connected to the four corners of the moving deck 150. The lifting wires 160 connected to the four corners of the moving deck 150 each converge at the rear of the slide unit 140 via the diverting sheaves 131 adjacent to them, so that the plurality of lifting wires 160 are all connected to one side of the slide unit 140 and can be pulled simultaneously as the slide unit 140 moves.

[0047] In this way, the direction-changing sheave 131 can be modified into various shapes to connect the lifting wires 160 between the moving deck 150 and the slide unit 140. For example, a horizontally formed horizontal sheave (see 131a in FIG. 7) can be arranged behind the slide unit 140, and vertically formed vertical sheaves (see 131b in FIG. 7) can be arranged above the four corners of the moving deck 150. The lifting wires 160 can be distributed from the horizontal sheave 131a to the four vertical sheaves 131b, thereby connecting a plurality of lifting wires 160 from the rear of the slide unit 140 to each corner of the moving deck 150.

[0048] The direction-changing sheave 131 may be formed in a form combining a horizontal sheave 131a and a vertical sheave 131b, but is not limited to this, and various other types of direction-changing sheaves 131 can be formed that can appropriately change the path of the lifting wire 160 and connect the lifting wire 160 between the moving deck 150 that moves vertically and the slide unit 140 that moves horizontally.

[0049] Since this structure is similarly applied to each deck unit 100, it should be understood that the other deck units 100 also include the same structure unless otherwise described below. As shown in Figure 2, multiple deck units 100 can be coupled by connecting frames 130, and when the frames 130 are connected in this manner, the frames 130 of each deck unit 100 can be formed integrally with one another. As mentioned above, the frame 130 can of course be formed using a structure that is already installed at the installation site.

[0050] A first sheave 110 and a second sheave 120 are provided for each of these deck units 100. Four different deck units 100 are shown in Figure 2, and four pairs of first sheaves 110 and second sheaves 120 are seen arranged for each deck unit 100. As the number of deck units 100 increases, the number of pairs of first sheaves 110 and second sheaves 120 also increases accordingly. The first sheaves 110 and second sheaves 120 are arranged corresponding to each deck unit 100.

[0051] The first sheave 110 is fixed to the frame 130 of the deck unit 100, and the second sheave 120 is connected to the slide unit 140 of the deck unit 100. Because the slide unit 140 is movable, the distance between the second sheave 120 and the first sheave 110 is adjusted as the slide unit 140 moves. That is, the drive wire 200 is hung on the second sheave 120, and because the second sheave 120 is connected to the slide unit 140, when the drive wire 200 is pulled, the driving force is essentially transmitted to the slide unit 140 via the second sheave 120. Therefore, when the slide unit 140 moves, the lifting wire connected to it is pulled. That is, the second sheave 120 moves together with the slide unit 140, and can function as a kind of movable pulley whose distance from the first sheave 110 varies. Such a first sheave 110 and second sheave 120 are provided for each deck unit 100.

[0052] 1 and 2, the drive wire 200 is configured to pass through multiple deck units 100. The drive wire 200 is wound around the first sheave 110 and the second sheave 120 provided in each deck unit 100 at the same time, and extends to another adjacent deck unit 100. Because the drive wire 200 is wound between the first sheave 110 and the second sheave 120, when the drive wire 200 is pulled, the second sheave 120 acts as a movable pulley, allowing the slide unit 140 to move. In other words, the drive wire 200 transmits driving force to the slide unit 140 by winding around the first sheave 110 and the second sheave 120 of each deck unit 100 at the same time.

[0053] In this case, winding simultaneously means winding two sheaves so that the first sheave 110 is fixed and the second sheave 120 can move relative to it, and there is no need to limit the winding order, but for example, it means winding both sheaves simultaneously by winding the second sheave 120 first and then bending it to wind the first sheave 110. The winding structure will be described in detail later (see Figure 3).

[0054] As shown in Fig. 2, one end of the driving wire 200 is connected to a driving device 210 formed on the outside of the deck unit 100, and the other end passes through a plurality of deck units 100 and is then fixed to a fixed end (see 220 in Fig. 2) of the last deck unit 100. The driving device 210 may be a winch, and the fixed end may be a type of anchor. However, this is not limited thereto, and the driving device 210 may have various structures capable of pulling the driving wire 200. For example, in addition to a winch, the driving device 210 may be formed using a hydraulic cylinder or other traction device (a structure that can pull the driving wire to generate displacement and thereby apply tension), etc.

[0055] The drive wire 200 between one end and the other end is pulled into the deck unit via a pull-in pulley (see 133 in FIG. 1), and is wound around the first sheave 110 and the second sheave 120 provided in each deck unit 100 at the same time, repeating the structure of extending to another deck unit 100. The winding structure of the drive wire 200 will be described in more detail below with reference to FIGS. 3 to 5.

[0056] Figure 3 is a conceptual diagram for explaining the winding structure of the drive wire and the method of transmitting the drive force of the deck lifting system of Figure 2, Figure 4 is an oblique view showing the winding structure and operation method of the drive wire of the deck lifting system of Figure 2, and Figure 5 is an enlarged front view showing the winding structure of the first sheave and the second sheave of the deck lifting system of Figure 2.

[0057] 3(a), (b), and (c) illustrate examples of how the drive wire 200 is wound around the sheave. 3(a) to (c) of FIG. 3 show exemplary winding orders to explain the winding structure of the drive wire 200, and the winding method is not limited thereto. For example, the same winding structure can be realized in the reverse order of the illustrations, so the winding method is merely exemplary and need not be limited to the drawings.

[0058] 3, the first sheave 110 and the second sheave 120 of each deck unit (see 100 in FIG. 2) may be spaced apart in the direction in which the slide unit 140 slides. The second sheave 120 is coupled to the slide unit 140 and is movable in the direction toward the first sheave 110. Meanwhile, the first sheave 110 is fixed to the frame (see 130 in FIG. 2) so as not to move.

[0059] The drive wire 200 may be wound around each sheave as follows: For example, the drive wire 200 may enter one side of a deck unit, bend once, and be wound around the second sheave 120 as shown in Figure 3(a), and then bend again along the first sheave 110 and be wound around the first sheave 110 as shown in Figure 3(b). After being wound around the first sheave 110 and the second sheave 120 simultaneously in this manner, the drive wire 200 may extend in the entry direction, pass through the second sheave 120, and enter the next deck unit as shown in Figure 3(c).

[0060] As the driving wire 200 is wound around both the first sheave 110 and the second sheave 120 at the same time (see FIG. 3(c)), when tension is applied by pulling the driving wire 200 using a driving machine (see 210 in FIG. 1), the second sheave 120 can move toward the fixed first sheave 110 as shown in FIG. 3(d). The second sheave 120 is connected to the slide unit 140 and can be driven, so it can act as a movable pulley whose position changes when the driving wire 200 is pulled.

[0061] However, as shown in FIG. 3(d), the slide unit 140 can only move when the fixed unit 142 releases the constraint on the slide unit 140 (for example, by inserting the fixed block 142a), so that by using the fixed unit 142 to restrict or release the constraint on the slide unit 140 of a specific deck unit among multiple deck units, it is possible to selectively move only the second sheave 120 of the desired deck unit.

[0062] That is, the drive wire 200 is wound around the first sheave 110 and the second sheave 120 simultaneously in the manner exemplified in Figures 3(a) to 3(c) to transmit a drive force to the slide unit 140 coupled to the second sheave 120, and the fixing unit 142 provided on the deck unit 100 can selectively change the position of only the second sheave 120 of at least one of the multiple deck units 100 by restraining or releasing the restraint of the slide unit 140. With this structure, it is possible to selectively operate only the required deck unit from the multiple deck units by pulling the single drive wire 200 (see Figure 11).

[0063] The structure of the fixed unit 142 will be described in detail below.

[0064] 4, the drive wire 200 repeats this winding structure for multiple different deck units 100, so that a single drive wire 200 repeatedly winds around the first sheave 110 and the second sheave 120 of all deck units 100. In order to clearly show the winding structure of the drive wire 200, other structures (e.g., moving decks, lifting wires, etc.) are omitted from FIG. 4, and the enlarged view shows a perspective view of the winding structure of the drive wire 200 described above (enlarged view at the bottom) and the operation of pulling the drive wire 200 to move the second sheave 120 (enlarged view at the top), so please refer to this.

[0065] As a result, the drive wire 200 may include, for example, a first section 201 that enters one of the deck units from the driver 210 or an adjacent deck unit and contacts one of the first sheave 110 and the second sheave 120, a second section 202 that contacts the remaining one of the first sheave 110 and the second sheave 120 and extends to another adjacent deck unit, and a third section 203 that simultaneously contacts the first sheave 110 and the second sheave 120.

[0066] The first section 201, the second section 202, and the third section 203 may be formed parallel to one another, but this is not necessarily the case depending on the sheave arrangement structure, sheave size, etc. However, it is preferable to maintain the first section 201, the second section 202, and the third section 203 as parallel as possible by appropriately arranging the sheaves.

[0067] 4 and 5, the first sheave 110 may be positioned at a slight incline (with its rotation axis slightly tilted) due to the winding structure of the drive wire 200. To enable the first sheave 110 to be fixed in an inclined position, it may be inserted into a fixed sheave housing (see 111 in FIG. 5) that fixes the first sheave 110 with its rotation axis tilted. For example, the first sheave 110 may be positioned at an incline to avoid the first section 201 that enters from an adjacent deck unit or drive unit 210 and contacts the second sheave 120. In this case, one point of the first sheave 110, which is relatively low, may be positioned horizontally with the second sheave 120, and the drive wire 200 may be extended from another point of the first sheave 110, which is relatively high, to eliminate interference with the second sheave 120. That is, as shown in the figures, the second section 202 that contacts the first sheave 110 and extends to another adjacent deck unit may be passed above the second sheave 120 by utilizing the inclination of the first sheave 110. By appropriately adjusting the inclination, the third section 203, which simultaneously contacts the first sheave 110 and the second sheave 120, can be maintained horizontal.

[0068] That is, one of the first sheave 110 and the second sheave 120 may be disposed at an angle relative to the other, and the first section 201 and the second section 202 may be located at different heights. In this case, being disposed at an angle means that the rotation axes of the sheaves are not aligned parallel to each other, and this state is clearly shown in the enlarged view of Figure 4. Preferably, for structural stability, the second sheave 120, which is variable in position, may be disposed horizontally, and the first sheave 110, which is fixed, may be disposed at a slight angle.

[0069] That is, the driving wire 200 can be arranged at different heights by utilizing the inclination of the first sheave 110, with the first section 201, which is drawn in from an adjacent deck unit or driving machine 210 and contacts the second sheave 120, and the second section 202, which contacts the first sheave 110 and extends to another adjacent deck unit, being arranged at different heights, thereby effectively eliminating interference between wires or between structures and wires. Therefore, even if a single driving wire 200 is wound around multiple sheaves, crossings between wires or with other structures are eliminated, thereby enabling a more effective device implementation.

[0070] The slide unit and the fixed unit will be described in more detail below with reference to FIG.

[0071] Figure 6 is an enlarged view of the slide unit of the deck lifting system of Figure 2. Please refer to the slide unit 140 in the drawing, as the main body (see 141 in Figure 3) is shown with imaginary lines to show the internal structure.

[0072] Referring to Fig. 6, the slide unit 140 may include a movable body 141. The body 141 of the slide unit 140 is coupled to a slide rail (see 132 in Fig. 3) provided on the frame (see 130 in Figs. 1 and 2) described above, and may move along the slide rail 132. The body 141 of the slide unit 140 may be formed, for example, as a structure in which horizontally arranged plates are coupled (see Fig. 5). The body 141 has an internal storage space, and may move while containing other structures.

[0073] The second sheave 120 is coupled to the slide unit 140, and the aforementioned lifting wire 160 is also coupled to the opposite side of the second sheave 120. Therefore, the slide unit 140 also serves as a connecting structure that connects the second sheave 120 and the lifting wire 160 to each other. Therefore, when the driving wire 200 transmits a driving force to the slide unit 140 via the second sheave 120, the slide unit 140 moves and pulls the lifting wire 160.

[0074] The second sheave 120 and the lifting wire 160 are respectively coupled to both ends of the slide unit 140 (i.e., both ends of the main body 141), with the second sheave 120 being disposed on the inside, facing the first sheave (see 110 in FIGS. 3 to 5) described above, and the lifting wire 160 extending to the outside, on the opposite side, and connected to the moving deck (see 150 in FIG. 1) via the direction-changing sheave (see 131 in FIG. 1) described above. Because the second sheave 120 faces the first sheave 110 and the lifting wire 160 is located on the opposite side, when the second sheave 120 is pulled toward the first sheave 110 by the drive wire 200, the lifting wire 160 is pulled in the same direction, and the moving deck 150 connected to the lifting wire 160 can be raised and lowered.

[0075] As described above, the lifting wires 160 are formed in multiple numbers and connected to the four corners of the moving deck 150, and each lifting wire 160 passes through the corresponding direction-changing sheave 131 and converges at the rear of the slide unit 140 (the right side in the drawing, meaning the opposite side of the second sheave). As a result, all of the lifting wires 160 are connected to one side of the slide unit 140 and can be pulled as the slide unit 140 moves. The lifting wires 160 can be connected to the main body 141 of the slide unit 140 with anchors 143.

[0076] In addition, a fixing unit 142 may also be disposed on the slide unit 140. The fixing unit 142 has a structure that restrains or releases the slide unit 140, and by this action, it is possible to selectively change only the second sheave 120 of a specific deck unit. The fixing unit 142 may be provided on at least one of the slide unit 140 and the frame of the deck unit (see 130 in FIG. 2), and when the slide unit 140 reaches a fixed position (which may be a specific position on the slide rail. The fixed position can be changed as needed, and is not necessarily limited to any one fixed position), at least a portion of the fixing unit 142 protrudes from the slide unit 140 or the frame 130, thereby restricting the movement of the slide unit 140.

[0077] For example, the fixing unit 142 includes a fixing block 142a that is protruded by a driving device and inserted from the slide unit 140 into the frame 130 or inserted from the frame into the slide unit, and the driving device may be operated by at least one of hydraulic force, electric force, and magnetic force. That is, since the protrusion of the fixing unit 142 can be operated by at least one of hydraulic force and / or electric force and / or magnetic force, it can be deformed into various shapes within that range.

[0078] For example, the fixing unit 142 may drive the fixing block 142a with a hydraulic cylinder, or may drive the fixing block 142a with a driving device operated by electricity such as a motor, or may drive the fixing block 142a with other different structures (for example, a driving device that projects by magnetic repulsion using an electromagnet, etc.), and the fixing block 142a may be operated by combining such devices or by using a driving device that can operate the fixing block in other ways. The driving device may be modified in various ways within the range in which such driving is possible.

[0079] In this embodiment, an example will be described in which the fixing unit 142 is provided on the slide unit 140. The fixing unit 142 has the following structure. The fixing unit 142 may include a drive motor 142c that drives a pinion gear 142d, a rack bar 142b that meshes with the pinion gear 142d and moves linearly, and a fixing block 142a that is connected to the rack bar 142b and inserted from the slide unit 140 into the frame 130. In addition, a sensor 142e that detects the movement of the fixing block 142a may also be provided in the fixing unit 142.

[0080] The drive motor 142c is connected to the central pinion gear 142d and can drive the pinion gear 142d. When the pinion gear 142d rotates, the rack bar 142b and the fixed block 142a connected to the rack bar 142b move linearly (see arrows) and protrude outside the slide unit 140 or retract inside the slide unit 140. Therefore, the slide unit 140 can protrude from the slide unit and be inserted into the frame. This movable protrusion structure can be used to constrain or release the slide unit 140. For example, the slide unit 140 in (a) to (c) of FIG. 3 can be in a constrained state, and the slide unit 140 in (d) of FIG. 3 can be in an unconstrained state.

[0081] The slide rail (see 132 in FIG. 3) may have grooves (not shown) formed at appropriate positions (multiple grooves) through which the fixing blocks 142a pass and are fixed. Multiple grooves may be formed, and therefore multiple fixing positions may be formed where the fixing blocks 142a are coupled to the grooves and fixed (the slide units). Since the height of the moving deck changes depending on the fixing positions of the slide units 140, the height of the moving deck can be varied by forming multiple fixing positions for the slide units 140.

[0082] Although not shown in the drawings, the fixing unit 142 may be connected to a control unit (not shown) that controls the operation of the fixing block 142a, and the control unit can collectively control the fixing units 142 provided in the plurality of deck units. Therefore, under the control of the control unit, the fixing unit 142 provided in at least one deck unit 100 among the plurality of deck units can be selectively operated, thereby selectively restraining or releasing the restraint of the slide unit 140 of the corresponding deck unit.

[0083] The relative arrangement of the first and second sheaves provided on the deck unit and the operation of the moving deck by the drive wire will be described in more detail below with reference to Figures 7 and 8. Furthermore, modified examples of the first and second sheaves will also be described with reference to Figure 9.

[0084] Figure 7 is an enlarged plan view and front view of one of the deck units included in the deck lifting system of Figure 2, Figure 8 is an operation diagram of the deck unit of Figure 6, and Figure 9 is a diagram showing modified examples of the first and second sheaves. Similarly, the main body of slide unit 140 in the drawings (see 141 in Figure 3) is shown with imaginary lines to show the internal structure, so please refer to this.

[0085] 7, the arrangement of the first sheave 110 and the second sheave 120 provided on the deck unit 100 can be seen. The second sheave 120 is coupled to the slide unit 140 described above, and the first sheave 110 can be coupled to and fixed to the upper structure of the frame 130.

[0086] The drive wire 200 is wound around the first sheave 110 and the second sheave 120 simultaneously and extends to another adjacent deck unit. Preferably, the first sheave 110 and the second sheave 120 are arranged so that an imaginary line connecting their respective rotation axes is in the same direction as the direction in which the drive wire 200 extends through the deck unit 100. The sliding direction of the slide unit 140 may also be the same. That is, the drive wire 200 may extend parallel to the movement direction of the slide unit 140.

[0087] The first sheave 110 and the second sheave 120 may have the same diameter. In this case, it may be advantageous to align the extension direction of the entire drive wire 200 with the extension direction of the portions of the drive wire 200 wound between the first sheave 110 and the second sheave 120 (e.g., the first, second, and third sections) to maintain the two parallel to each other.

[0088] Referring to an enlarged view, the second sheave 120 and the lifting wire 160 may be respectively coupled to both ends of the slide unit 140 along an imaginary line connecting the rotation axes of the first sheave 110 and the second sheave 120. The second sheave 120 is disposed on the inside facing the first sheave 110, and the lifting wire 160 may extend to the outside, on the opposite side, and be connected to the moving deck 150 via the above-mentioned direction-changing sheave 131. In other words, the first sheave 110, the second sheave 120, and the end of the lifting wire 160 are positioned substantially in a straight line, and displacement can be created by adjusting the spacing between the first sheave 110 and the second sheave 120.

[0089] Because the lifting wires 160 converge on the opposite side of the second sheave 120, when a driving force is applied, they are pulled simultaneously, and each lifting wire can simultaneously lift and lower the corners of the moving deck 150 via the direction-changing sheave 131. As described above, the horizontal sheave 131a formed horizontally is disposed behind the slide unit 140, and the vertical sheaves 131b? formed vertically are disposed above the four corners of the moving deck 150, so that a plurality of lifting wires 160 can be distributed and connected from the rear of the slide unit 140 to each corner of the moving deck 150.

[0090] 8, with this structure, when the driving wire 200 is pulled, the moving deck 150 rises. When the driving wire 200 pulls the second sheave 120 toward the first sheave 110 and a driving force is transmitted to the slide unit 140 connected to the second sheave 120, the lifting wire 160 connected to the slide unit 140 pulls the moving deck 150 upward. At this time, the fixed block 142a of the fixed unit 142 is retracted, and the constraint of the slide unit 140 is released. When the moving deck 150 rises and reaches a target position, the fixed block 142a can be extended again to restrict the slide unit 140 from moving.

[0091] This structure has the advantage that the second sheave 120 acts as a movable pulley to generate a force gain, thereby reducing the load applied to the drive machine (see 210 in Figures 1 and 2) that pulls the drive wire 200. In addition, the structure is simple because a single drive wire 200 is wound around the first sheave 110 and the second sheave 120. Another advantage is that the second sheave 120 can be moved or fixed so that it does not move simply by operating the fixing unit 142, which makes it easier to operate the movable deck 150.

[0092] By reversing the above-described operations (i.e., releasing the restraint of the fixed unit 142, slowly loosening the drive wire to release the tension, and moving the slide unit in the opposite direction), the gap between the first sheave 110 and the second sheave 120 can be increased back to its original position, and the moving deck 150 can be lowered to its original position.

[0093] If necessary, the first sheave 110 and the second sheave 120 may be modified to a configuration such as that shown in FIG. 9. In other words, although the first sheave 110 and the second sheave 120 are described as single sheaves in this embodiment, they may be formed in multiple overlapping configurations as needed. For example, as shown in FIG. 9, at least one of the first sheave 110 and the second sheave 120 may be configured with multiple sheaves overlapping on the same rotation axis. Furthermore, the drive wire 200 may be wound multiple times between the first sheave 110 and the second sheave 120 and extend to an adjacent deck unit. In other words, the winding structure shown in FIG. 3 may be repeatedly applied to the first sheave 110 and the second sheave 120 in a configuration in which multiple sheaves are overlapped, thereby amplifying the effect (force gain) of the movable pulley.

[0094] For example, in the modified example of FIG. 9, the drive wire 200 may be wound multiple times simultaneously between three overlapping first sheaves 110 and three overlapping second sheaves 120 before extending to an adjacent deck unit. For example, the first section 201 of the drive wire 200 may be wound around the lowest second sheave 120, then bent again and wound around the lowest first sheave 110. After simultaneously winding the drive wire 200 around the lowest first sheave 110 and second sheave 120, the same process may be repeated around the first sheave 110 and second sheave 120 above, and then around the highest first sheave 110 and second sheave 120 before passing through the highest second sheave 120 and entering the next deck unit. Thus, the second section 202 may be formed from the lowest first sheave 110.

[0095] Thus, the third section 203, which simultaneously contacts the first sheave 110 and the second sheave 120, can be formed in multiple sections corresponding to the number of overlapping sheaves, and a transition section 204 can be added to connect sheaves of different heights to connect the overlapping sheaves. This structure allows the single drive wire 200 to be wound around the first sheaves 110 and the second sheaves 120 several times in a zigzag shape before exiting, thereby increasing the number of movable pulleys (i.e., second sheaves) and amplifying the force gain. Therefore, the movable deck can be moved more effectively without straining the drive system. In this way, the drive wire 200 can be wound around the first sheave 110 and the second sheave 120 and the second sheave 120 can be moved to raise and lower the movable deck 150.

[0096] 10 and 11 are operation diagrams of the entire deck lifting system of FIG.

[0097] Such movement of the deck units 100 can be selectively performed for the entire deck lifting system 10 shown in Fig. 10. The above-mentioned fixing unit 142 allows the following operations. For example, as shown in the enlarged view of Fig. 10, if all of the fixing units 142 provided on multiple deck units 100 are in a protruding state (fixing blocks 142a protrude) and restrict the slide units 140, the second sheaves 120 of all deck units 100 cannot move, and therefore movement of all deck units 100 is halted.

[0098] However, as shown in the enlarged view of Figure 11, if only the fixed unit 142 installed on one of the deck units 100' is selected and the slide unit 140 is released (only the fixed block 142a of the corresponding deck unit is inserted), only the second sheave 120 of the corresponding deck unit 100' moves, allowing only the movable deck 150 of the specific deck unit 100' to be raised. In other words, even if the entire drive wire 200 is pulled, the other deck units 100 whose second sheave 120 is released only have the first sheave 110 and second sheave 120 function as fixed pulleys, so they only serve to transmit tension to the second sheave 120 of the released deck unit 100'. Therefore, only the second sheave 120 of the specific deck unit 100' whose restraint is released selectively changes position.

[0099] This structure can be applied to one or more deck units under the control of the aforementioned control unit (not shown), so that a single drive wire 200 can selectively move at least one of the multiple deck units 100, and if necessary, it is also possible to move all the deck units 100 of the deck lifting system 10 simultaneously.

[0100] That is, the present invention is characterized in that the position of any one, two or more, or all of the second sheaves 120 of each deck unit 100 can be selectively changed. Therefore, depending on the number of second sheaves 120 whose positions are changed, one movable deck 150 of each deck unit 100 is raised or lowered, or multiple movable decks 150 are raised or lowered simultaneously. Therefore, the positions of the movable decks 150 of different deck units 100 can be adjusted sequentially, or the heights of the movable decks 150 of all deck units 100 can be changed simultaneously. Therefore, the movable decks 150 can be appropriately adjusted in a variety of ways. In this way, the deck lifting system 10 can be operated in a very efficient manner.

[0101] Hereinafter, a ship including a deck lifting system according to an embodiment of the present invention will be described in detail with reference to Fig. 12. The deck lifting system of the present invention has been described in detail above, so a duplicated description thereof will be omitted and the description will focus on differences from the above-described embodiment.

[0102] FIG. 12 is a conceptual diagram of a ship including a deck lifting system according to one embodiment of the present invention.

[0103] 12, a ship 1 of the present invention includes a hull 11 and a deck lifting system 10 of the present invention provided inside the hull 11. The hull 11 is used for loading vehicles and may be, for example, the hull 11 of a vehicle carrier or the like. The deck lifting system 10 of the present invention can be provided and used in the loading space inside such a hull 11.

[0104] The deck units 100 that make up the deck lifting system 10 can be increased in number as needed with substantially the same structure, so the number of deck units 100 can be increased taking into consideration the length of the hull 11, the size of the loading space, etc. The drawings show only a portion of the deck units.

[0105] When the deck lifting system 10 is applied to a ship or the like, the frame 130 can be directly utilized as the hull 11, as described above. That is, the frame 130 can be configured as a hull structure such as a frame formed on the hull 11, and therefore does not need to be installed separately. In this way, the deck lifting system 10 of the present invention can be easily configured by using a structure formed on the hull 11 as the frame 130.

[0106] If the hull 11 has multiple loading decks, the deck lifting systems 10 can be installed stacked one on top of the other. The drawings also show only a portion of the hull 11, and the number of stacked deck lifting systems 10 can be increased as needed. In this manner, the above-described deck lifting system 10 can be applied inside the hull 11 to selectively adjust the height of the moving deck, allowing vehicles of various sizes to be loaded. A ship 1 equipped with the deck lifting system 10 in this manner can also be provided.

[0107] Although the present invention has been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the above-described embodiment is illustrative in all respects and is not limiting. [Explanation of symbols]

[0108] 1 ship 11 Hull 10 Deck lifting system 100,100' Deck Unit 110 First Sheave 111 Fixed sheave housing 120 Second Sheave 130 frames 131 Directional sheave 131a horizontal sheave 131b vertical sheave 132 slide rail 133 Retractable Pulley 140 Slide unit 141 Main Unit 142 Fixed Unit 142a Fixed Block 142b Rack Bar 142c drive motor 142d pinion gear 142e Sensor 143 Anchor 150 Mobile Deck 160 Lifting wire 200 drive wire 201 Section 1 202 Section 2 203 Section 3 204 Transition Section 210 Drive 220 fixed end

Claims

1. The frame and a moving deck coupled to the frame so as to be vertically movable; a slide unit connected to the frame so as to be horizontally movable; a plurality of deck units each including a plurality of lifting wires, one end of which is connected to the moving deck and the other end of which is connected to the slide unit via a direction-changing sheave provided on the frame; a first sheave provided for each deck unit and fixed to the frame; a second sheave provided for each of the deck units, coupled to the slide unit, and having a gap between the second sheave and the first sheave adjusted as the slide unit moves; a drive wire that passes through a plurality of deck units, winds around the first sheave and the second sheave of each deck unit, and transmits a drive force to the slide unit; and a driver that pulls the drive wire to slide the slide unit, The drive wire a first section that enters one of the deck units from the driver or an adjacent deck unit and contacts one of the first sheave and the second sheave; a second section contacting the remaining one of the first sheave and the second sheave and extending to another adjacent deck unit; a deck lifting system including a third section that simultaneously contacts the first sheave and the second sheave.

2. 2. The deck lifting system according to claim 1, further comprising a fixing unit provided on the deck unit, which restrains or releases the slide unit to selectively change only the position of the second sheave of at least one of the plurality of deck units.

3. 3. The deck lifting system according to claim 2, wherein the fixing unit is provided on at least one of the slide unit and the frame, and when the slide unit reaches a fixed position, at least a portion of the fixing unit protrudes from the slide unit or protrudes from the frame to restrict movement of the slide unit.

4. 4. The deck lifting system according to claim 3, wherein the fixing unit includes a fixing block that is protruded by a drive device and inserted from the slide unit into the frame or inserted from the frame into the slide unit, and the drive device is operated by at least one of hydraulic force, electric force, and magnetic force.

5. The fixed unit is 5. The deck lifting system according to claim 4, further comprising: a drive motor that drives a pinion gear; a rack bar that meshes with the pinion gear and moves linearly; and the fixed block that is connected to the rack bar and inserted from the slide unit into the frame or inserted from the frame into the slide unit.

6. The first sheave and the second sheave are 2. The deck lifting system according to claim 1, wherein an imaginary line connecting each of the rotation shafts is arranged in the same direction as the direction in which the drive wire extends through the deck unit.

7. The deck lifting system according to claim 6, wherein the drive wire extends parallel to the direction of movement of the slide unit.

8. 7. The deck lifting system of claim 6, wherein the first sheave and the second sheave have the same diameter.

9. 7. The deck lifting system according to claim 6, wherein the second sheave and the lifting wire are respectively coupled to both ends of the slide unit along the imaginary line, the second sheave is disposed on the inside opposite to the first sheave, and the lifting wire extends outward and is connected to the moving deck via the direction-changing sheave.

10. 2. The deck lifting system according to claim 1, wherein one of the first sheave and the second sheave is disposed at an angle relative to the other, and the first section and the second section are at different heights.

11. 2. The deck lifting system according to claim 1, wherein at least one of the first sheave and the second sheave is configured by a plurality of sheaves stacked on the same rotation axis.

12. The drive wire The deck lifting system according to claim 1 , wherein the cable is wound around the first sheave and the second sheave multiple times simultaneously and extends to an adjacent deck unit.

13. 3. The deck lifting system according to claim 2, wherein one of the movable decks among the plurality of deck units is lifted or lowered, or the plurality of movable decks are lifted or lowered simultaneously, depending on the number of the second sheaves whose positions change.

14. the hull; and A watercraft comprising a deck lifting system according to any one of claims 1 to 13 provided inside the hull.

Images