Deck lifting system and vessel including the 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 vehicle loading, 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. As vehicles can move by themselves, such RO-RO ships have the advantage that vehicles can be moved and boarded directly without the use of a separate crane.

[0003] RO-RO ships are designed to allow vehicles that can move by themselves to be rolled on and off the ship via a ramp, either directly or by loading them onto transport equipment such as trucks or trailers. However, since the vehicles loaded onto ships are diverse, ranging 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 waste cargo hold capacity. Therefore, in the past, in order to increase the loading capacity of passenger cars, a separate lift device (mobile deck lifter or deck hoisting system) was installed in the cargo hold, and passenger cars were loaded in multiple layers (for example, Korean Patent Registration No. 10-2316013).

[0005] However, most of the conventional lifting devices have problems such as a high load on the drive system, and the drive is inefficient due to the complicated fixing structure. In addition, the device is large in volume and requires a large installation space, making it difficult to apply to ships of different sizes. 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 parking towers, it is necessary to divide one floor and use it as multiple floors. In addition, warehouses for loading goods and containers for cargo vehicles also need to adjust 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 having an efficient operating structure and capable of selectively driving a plurality of decks in an efficient manner or driving 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 vertically movably connected to the frame, a slide unit horizontally movably connected to the frame, 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 the first sheave and the second sheave being adjusted as the slide unit moves; a drive wire that passes through the plurality of deck units and winds 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 selectively change only a position of the second sheave of at least one of the deck units by constraining or releasing the slide unit.

[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 from 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 to the frame or inserted from the frame to the slide unit, and the driving device can 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 to the frame or inserted from the frame to 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 disposed on the inside opposite to 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 entering one of the deck units from the drive unit or an adjacent deck unit and contacting 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, and a third section contacting the first sheave and the second sheave simultaneously.

[0020] One of the first sheave and the second sheave may be disposed inclined with respect to the other, and the first section and the second section may be located 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 deck units may rise and fall, or the moving decks may rise and fall simultaneously.

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

[0025] According to the present invention, a deck on which a vehicle or the like is loaded can be lifted and lowered in an efficient manner. The load on the drive unit can be reduced by a structure that appropriately distributes the load on the deck, and multiple decks that are separated from each other can be operated very efficiently in this manner. In addition, the lifting deck can be simply and efficiently selected to selectively operate multiple decks, and it is also advantageous to operate one or multiple decks at a time. Therefore, advantages can be obtained compared to the conventional art in processes such as vehicle loading.

[0026] In addition, because the power transmission structure uses wires, the arrangement of the deck unit is relatively free, so it can be installed on ships of various shapes, and it has the advantage of being easily applicable to parking lot systems, warehouses, containers, etc. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1 is a perspective view of a portion of a deck lifting system according to an embodiment of the present invention. [Diagram 2] 1A and 1B are plan and front views of a deck lift system according to one embodiment of the present invention; [Diagram 3] 3 is a conceptual diagram for explaining a winding structure of a drive wire and a method of transmitting a drive force of the deck lifting and lowering system of FIG. 2. [Figure 4]FIG. 3 is a perspective view showing the winding structure and operation method of the drive wire of the deck lifting system of FIG. 2. [Diagram 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. [Figure 6] 3 is an enlarged view of a slide unit of the deck lifting system of FIG. 2. [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] 11A and 11B 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 in accordance with one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] The advantages and features of the present invention and the methods for achieving them will become clear from the detailed description of the embodiments described below 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 merely to complete the disclosure of the present invention and to fully inform those skilled in the art of the present invention of the scope of the invention, and the present invention is defined solely by the claims. The same reference numerals refer to the same elements throughout the specification.

[0029] Hereinafter, a deck lifting / lowering system and a ship including the same according to the present invention will be described in detail with reference to Figures 1 to 12. The deck lifting / lowering system has been described in detail with reference to Figures 1 to 11, and based on that, a ship including the deck lifting / lowering system will also be described in detail with reference to Figure 12.

[0030] FIG. 1 is a perspective view showing a portion 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 with a plurality of deck units 100, each including a moving deck 150. Each deck unit 100 has substantially the same structure, and each deck unit 100 lifts and lowers the moving deck 150 using a driving force provided by a driving wire 200 (see FIG. 8).

[0032] The driving wire 200 passes through each deck unit 100. The driving wire 200 passes through the multiple deck units 100 and is arranged in a manner of simultaneously winding around and exiting the first sheave 110 and the 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 can move, so that the second sheave 120 acts as a kind of movable pulley (see FIG. 3(d)). Therefore, when the driving wire 200 is pulled to move the second sheave 120, the moving 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 among the multiple deck units 100 can be selected and operated, 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, and 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, a first wire 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 which is provided for each deck unit 100 and connected 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 which 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 a driving force to the slide unit 140, and a driver 210 which 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 selectively changes only the position of the second sheave 120 of at least one of the deck units 100 by constraining or releasing the slide unit 140. 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 arrives at a fixed position, at least a portion of the fixing unit 142 may protrude 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 the fixing unit 142 is provided on each slide unit 140 will be described, but since the fixing unit is for restraining or releasing the restraint of the slide unit 140, it is also possible for it to be provided on the frame side or on both the slide unit and the frame. Therefore, the technical idea of ​​the present invention is not limited to this embodiment. The configuration 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. Since the number of deck units 100 can be increased or decreased as necessary, the illustrated structure can be extended as necessary to configure a deck lifting system 10 including a plurality of deck units 100. In addition, such deck lifting systems 10 can be configured in multiple layers by arranging them one above the other. Such an arrangement will be described in more detail with reference to a ship including the deck lifting system 10 (see 1 in FIG. 12) which will be described later.

[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 rises and falls in the internal 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 can pull the moving deck 150 to raise and lower it.

[0039] The structure of the deck units 100 of the multiple deck units 100 is substantially the same. 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 is equally applicable 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. FIG. 1 does not show the frame 130 in detail to show the internal structure, but 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 skeleton including corners configured in a rectangular shape, and the sides may be open. Reinforcements may be arranged on the upper and lower parts of the frame 130 to reinforce the strength. The frame 130 is not limited to an artificial structure for installing the deck unit 100, and may be a part of the hull structure when used in a ship, or may be a part of the building structure when used in a parking system or a loading system inside a building. In other words, the frame 130 may be any form regardless of shape, size, etc., as long as it is a structure in which the deck lifting system 10 can be installed at the place 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 in a horizontal direction and capable of translation (rising and lowering) in a 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 pillars of the frame 130, and a lock structure (not shown) for fixing the moving deck 150 to the frame 130 by protruding or recessing as necessary may be formed on the side of the moving deck 150. Such a structure may be applied as necessary.

[0042] The slide unit 140 may be disposed on the upper part of the frame 130. The slide unit 140 may be coupled to a slide rail 132 horizontally provided 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 capable of sliding in the horizontal direction. The slide unit 140 is coupled to the second sheave 120 and serves to form the second sheave 120 into 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, the slide unit 140 moves together with the second sheave 120 and pulls the lift wire 160. A 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, as long as there is space available for power transmission by wire, 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.

[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 coupled 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 be connected to the moving deck 150 at one end, and the other end may be 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 to change its traveling direction.

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

[0047] In this way, the direction-changing sheave 131 can be modified into various shapes in order to connect the lift wire 160 between the moving deck 150 and the slide unit 140. For example, a horizontal sheave (see 131a in FIG. 7) formed in a horizontal direction can be arranged behind the slide unit 140, and vertical sheaves (see 131b in FIG. 7) formed in a vertical direction can be arranged above the four corners of the moving deck 150, and the lift wire 160 can be distributed from the horizontal sheave 131a to the four vertical sheaves 131b, thereby connecting a plurality of lift 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 to 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 without any separate description below. As shown in Fig. 2, a plurality of deck units 100 can be coupled by connecting the frames 130, and when the frames 130 are connected in this manner, the frames 130 of the deck units 100 can be formed integrally with each other. As mentioned above, the frame 130 can of course be formed by using the structure arranged at the installation site as it is.

[0050] The first sheave 110 and the second sheave 120 are provided for each of these deck units 100. Four different deck units 100 are shown in Fig. 2, and four pairs of first sheaves 110 and second sheaves 120 are identified 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 coupled to the slide unit 140 of the deck unit 100. Since 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 driving wire 200 is hung on the second sheave 120, and since the second sheave 120 is coupled to the slide unit 140, when the driving wire 200 is pulled, the driving force is substantially transmitted to the slide unit 140 via the second sheave 120. Therefore, when the slide unit 140 moves, the lift wire coupled thereto is pulled. That is, the second sheave 120 moves together with the slide unit 140, and can act as a kind of movable pulley in which the distance between the second sheave 120 and the first sheave 110 changes. Such a first sheave 110 and second sheave 120 are disposed for each deck unit 100.

[0052] As shown in Fig. 1 and Fig. 2, the drive wire 200 is structured to pass through a plurality of 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 the adjacent other deck units 100. Since 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, and the slide unit 140 can move. In other words, the drive wire 200 transmits a 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 although there is no need to limit the winding order, for example, it means winding the second sheave 120 first and then bending to wind the first sheave 110, thereby winding both sheaves simultaneously. The winding structure will be described in detail later (see FIG. 3).

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

[0055] The driving 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 the structure of simultaneously winding around the first sheave 110 and the second sheave 120 provided for each deck unit 100 and extending to another deck unit 100 is repeated. The winding structure of the driving wire 200 will be described in more detail below with reference to FIGS. 3 to 5.

[0056] FIG. 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. 4 is an oblique view showing the winding structure and operation method of the drive wire of the deck lifting system of FIG. 2, and FIG. 5 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.

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

[0058] 3, a first sheave 110 and a second sheave 120 of each deck unit (see 100 in FIG. 2) may be spaced apart in the direction in which a 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 a frame (see 130 in FIG. 2) so as not to move.

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

[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 that 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 moves only when the fixed unit 142 releases the constraint on the slide unit 140 (for example, this can be released by inserting a 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 driving wire 200 is structured to transmit driving force to the slide unit 140 coupled to the second sheave 120 by simultaneously winding the first sheave 110 and the second sheave 120 in the manner exemplified in Figures 3(a) to 3(c), and the fixing unit 142 provided on the deck unit 100 can selectively change only the position of at least one of the second sheaves 120 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 units from the multiple deck units by pulling the single driving wire 200 (see Figure 11).

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

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

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

[0066] The first section 201, the second section 202, and the third section 203 may be formed parallel to each other, but this is not necessarily the case depending on the arrangement of the sheaves and the size of the sheaves, 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 arranged slightly inclined (with the rotation axis slightly inclined) due to the winding structure of the driving wire 200. The first sheave 110 may be inserted into a fixed sheave housing (see 111 in FIG. 5) that fixes the first sheave 110 with the rotation axis inclined so that the first sheave 110 can be fixed in the inclined state. For example, the first sheave 110 may be arranged to be inclined to avoid the first section 201 that enters from an adjacent deck unit or driving machine 210 and contacts the second sheave 120. In this case, one point of the first sheave 110 with a relatively low height is placed in a horizontal position with the second sheave 120, and the driving wire 200 is extended from another point of the first sheave 110 with a relatively high height, thereby eliminating 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 pass above the second sheave 120 by utilizing the inclination of the first sheave 110. By appropriately adjusting the inclination, the third section 203, which contacts the first sheave 110 and the second sheave 120 at the same time, can be maintained horizontal.

[0068] That is, either the first sheave 110 or the second sheave 120 may be disposed at an incline with respect 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 incline means that the rotation axes of the sheaves are not aligned in parallel, and this state is also 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 incline.

[0069] That is, the driving wire 200 can be arranged at different heights by utilizing the inclination of the first sheave 110, i.e., the first section 201 that is drawn in from an adjacent deck unit or driving machine 210 and contacts the second sheave 120, and the second section 202 that contacts the first sheave 110 and extends to another adjacent deck unit, and this can be used to effectively eliminate interference between wires or between structures and wires. Therefore, even if a single driving wire 200 is wound around multiple sheaves, crossing between wires or crossing with other structures can be eliminated, and the device can be realized more effectively.

[0070] The sliding 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 by imaginary lines to show the internal structure.

[0072] 6, the sliding unit 140 may include a movable body 141. The body 141 of the sliding unit 140 may be coupled to a slide rail (see 132 in FIG. 3) provided on the above-mentioned frame (see 130 in FIG. 1 and FIG. 2) and may move along the slide rail 132. The body 141 of the sliding unit 140 may be formed, for example, of a structure in which horizontally arranged plates are coupled (see FIG. 5). The body 141 has an accommodation space formed therein and may move while containing other structures.

[0073] The second sheave 120 is coupled to the slide unit 140, and the lift 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 lift 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 lift 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), 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, which is the opposite side, and connected to the moving deck (see 150 in Fig. 1) via the direction-changing sheave (see 131 in Fig. 1). Since 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 driving 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 a plurality of wires and connected to the four corners of the moving deck 150, and each lifting wire 160 passes through the corresponding turning sheave 131 and converges at the rear of the slide unit 140 (the right side of the drawing, meaning the opposite side of the second sheave). As a result, the plurality of lifting wires 160 are all connected to one side of the slide unit 140 and can be pulled at the same time as the slide unit 140 moves. The lifting wires 160 can be connected to the 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 is a structure that restrains or releases the restraint of the slide unit 140, and this action can 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 arrives at a fixed position (which may be a specific position on the slide rail. The fixed position can be changed as necessary, so it is not necessary to limit it to any one of the fixed positions), at least a part of the fixing unit 142 protrudes from the slide unit 140 or protrudes from 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 transformed into various shapes within that range.

[0078] For example, the fixed unit 142 may drive the fixed block 142a with a hydraulic cylinder, may drive the fixed block 142a with a driving device operated by electricity such as a motor, or may drive the fixed block 142a with other different structures (for example, a driving device that projects by repulsive force using magnetic force such as an electromagnet), and may operate the fixed block by combining such devices or using a driving device that can operate the fixed 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 structure of the fixing unit 142 is as follows. The fixing unit 142 may include a driving 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 operation of the fixing block 142a may also be disposed in the fixing unit 142.

[0080] The driving 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 arrow) and protrude outside the slide unit 140 or retract inside the slide unit 140. Therefore, it can protrude from the slide unit and be inserted into the frame. Using such a movable protruding structure, the slide unit 140 can be constrained or released. For example, the slide unit 140 in (a) to (c) of FIG. 3 described above can be in a constrained state, and the slide unit 140 in (d) of FIG. 3 can be in a released state.

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

[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 multiple deck units. Therefore, under the control of the control unit, the fixing unit 142 provided in at least one deck unit 100 among the multiple 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] Fig. 7 is a plan view and a front view showing an enlarged view of one of the deck units included in the deck lifting system of Fig. 2, Fig. 8 is an operation diagram of the deck unit of Fig. 6, and Fig. 9 is a diagram showing modified examples of the first sheave and the second sheave. Similarly, the main body of the slide unit 140 in the drawings (see 141 in Fig. 3) is shown in phantom 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 driving wire 200 is wound around the first sheave 110 and the second sheave 120 at the same time and extends to another adjacent deck unit. Preferably, the first sheave 110 and the second sheave 120 can be arranged so that an imaginary line connecting each rotation axis is in the same direction as the direction in which the driving wire 200 extends through the deck unit 100. The sliding direction of the slide unit 140 can also be the same. That is, the driving wire 200 can extend parallel to the moving 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 driving wire 200 with the extension direction of the portions of the driving wire 200 wound between the first sheave 110 and the second sheave 120 (for example, the first, second, and third sections described above) to maintain the two parallel to each other.

[0088] Referring to the 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, which is 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 substantially aligned in a straight line, and a displacement can be created by adjusting the distance between the first sheave 110 and the second sheave 120.

[0089] Since the lifting wires 160 gather on the opposite side of the second sheave 120, when a driving force is applied, they are pulled at the same time, 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 in the horizontal direction is disposed at the rear of the slide unit 140, and the vertical sheaves 131b? formed in the vertical direction 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 protruded again to restrict the slide unit 140 from moving.

[0091] Such a structure has the advantage that the load applied to the driving machine (see 210 in Figs. 1 and 2) that pulls the driving wire 200 is small, since the single driving wire 200 is wound around the first sheave 110 and the second sheave 120, and the structure is simple. Another advantage is that the second sheave 120 can be moved or fixed so as not to move simply by operating the fixing unit 142, which makes it easier to operate the moving 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 movable deck 150 can be lowered to its original position.

[0093] In addition, the first sheave 110 and the second sheave 120 can be modified to the form exemplified in FIG. 9, etc., as required. That is, in this embodiment, the first sheave 110 and the second sheave 120 are described based on a single sheave, but it is also possible to form each sheave in a plurality of forms by overlapping them as required. For example, as shown in FIG. 9, at least one of the first sheave 110 and the second sheave 120 can be configured with a plurality of sheaves overlapping on the same rotation axis. In addition, the driving wire 200 can be wound multiple times between the first sheave 110 and the second sheave 120 at the same time and extend to the adjacent deck unit. That is, it is also possible to amplify the effect (force gain) of the movable pulley by repeatedly applying the winding structure of FIG. 3 to the first sheave 110 and the second sheave 120 in a form in which a plurality of sheaves are overlapped, in a manner in which the driving wire 200 is wound several times between the first sheave 110 and the second sheave 120.

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

[0095] Thus, the third section 203, which simultaneously contacts the first sheave 110 and the second sheave 120, can be formed in a plurality of sections corresponding to the number of overlapping sheaves, and a transition section 204 that connects between sheaves of different heights can be added to connect the overlapping sheaves. This structure is a structure in which a single driving wire 200 is wound around a plurality of first sheaves 110 and a plurality of second sheaves 120 in a zigzag shape several times and then exits, thereby increasing the number of movable pulleys (i.e., second sheaves) and amplifying the gain in force. Therefore, the moving deck can be moved more effectively without putting strain on the driving system. In this way, the moving deck 150 can be raised and lowered by winding the driving wire 200 around the first sheave 110 and the second sheave 120 and moving the second sheave 120.

[0096] 10 and 11 are operation diagrams of the entire deck lifting and lowering 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, when all of the fixing units 142 provided on the multiple deck units 100 are in a protruding state (fixing blocks 142a protrude) and restrain the slide unit 140, the second sheaves 120 of all the deck units 100 cannot move, and therefore the movement of all the deck units 100 is halted.

[0098] However, as shown in the enlarged view of Fig. 11, when only the fixed unit 142 installed in one of the deck units 100' is selected and the constraint of 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, so that only the moving deck 150 of the specific deck unit 100' can be lifted. In other words, even if the entire driving wire 200 is pulled, the other deck unit 100 in which the second sheave 120 is constrained only plays a role of transmitting tension to the second sheave 120 of the deck unit 100' whose constraint is released, since both the first sheave 110 and the second sheave 120 only play the role of fixed pulleys. Therefore, only the second sheave 120 of the specific deck unit 100' whose constraint is released selectively changes position.

[0099] This structure can be applied to one or more deck units under 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 it is also possible to move all of the deck units 100 of the deck lifting system 10 simultaneously if necessary.

[0100] That is, the present invention is characterized in that the position of any one, two or more, or the entire second sheave 120 of each deck unit 100 can be selected and changed as many times as necessary, so that depending on the number of second sheaves 120 whose positions are changed, one of the moving decks 150 of the multiple deck units 100 is raised and lowered, or multiple moving decks 150 are raised and lowered simultaneously. Therefore, the positions of the moving decks 150 of different deck units 100 can be adjusted sequentially, or the heights of the moving decks 150 of all deck units 100 can be changed at once by adjusting them simultaneously. Therefore, the moving decks 150 can be appropriately adjusted in various 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. Since the deck lifting system of the present invention has been described in detail above, a duplicated description thereof will be omitted and the description will focus on the differences from the above-mentioned 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 in the loading space inside the hull 11 and used.

[0104] The deck units 100 constituting the deck lifting system 10 can be increased in number as required 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 directly utilize the hull 11 as described above. That is, the frame 130 can be configured from 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] The deck lifting system 10 may be installed stacked one on top of the other when the hull 11 has multiple loading decks. The drawings also show only a portion of the hull 11, and the number of stacked deck lifting systems 10 may be increased as necessary. In this manner, the above-described deck lifting system 10 may be applied inside the hull 11 to selectively adjust the height of the moving deck to load vehicles of various sizes. A ship 1 equipped with the deck lifting system 10 in this manner may also be provided.

[0107] Although the embodiment of 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 idea or essential features of the present invention. Therefore, it should be understood that the above 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 1st Sheave 111 Fixed sheave housing 120 2nd 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 1st Section 202 Section 2 203 Section 3 204 Transition Section 210 Drive unit 220 Fixed end

Claims

1. A frame, a moving deck coupled to the frame for vertical movement; 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 and coupled to the slide unit such that a distance between the second sheave and the first sheave is 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 deck lifting system including a drive machine that pulls the drive wire to slide the slide unit.

2. The deck lifting system according to claim 1, further comprising a fixing unit provided on the deck unit for constraining or releasing 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 arrives at 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 of claim 3, wherein the fixed unit includes a fixed block that is protruded by a drive device and inserted from the slide unit to the frame or inserted from the frame to 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, comprising: a drive motor that drives a pinion gear; a rack bar that meshes with the pinion gear and moves linearly; and a fixed block that is connected to the rack bar and inserted from the slide unit to the frame or inserted from the frame to 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 a moving direction of the slide unit.

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

9. 7. The deck lifting system of claim 6, wherein the second sheave and the lifting wire are respectively connected to both ends of the slide unit along the virtual line, the second sheave is positioned 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. The drive wire is a first section that enters one of the deck units from the driving machine 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; The deck lifting system of claim 1 , further comprising a third section that simultaneously contacts the first sheave and the second sheave.

11. The deck lifting system according to claim 10, 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.

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

13. The drive wire is The deck lifting system of claim 1 , wherein the cable wraps around the first sheave and the second sheave multiple times simultaneously to extend to an adjacent deck unit.

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

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

Images