Vehicle deck mass lifting system for ships

Abstract

The present invention provides a system for raising and lowering a plurality of vehicle deck plates using a single actuator. The vehicle deck plate lifting system for a ship includes: a main rod passing through a first vehicle deck plate, a second vehicle deck plate, ……, and an Nth vehicle deck plate arranged continuously (in this case, N is a natural number greater than two); an actuator moving the main rod forward or backward along the longitudinal direction in which the vehicle deck plates are arranged; and a first deck plate lifter, a second deck plate lifter, ……, and an Nth deck plate lifter, which are arranged at positions corresponding to the first vehicle deck plate, the second vehicle deck plate, ……, and the Nth vehicle deck plate, and are selectively fixed to the main rod to raise or lower the vehicle deck plates arranged at the corresponding positions according to the forward or backward movement of the main rod.

Description

Technical Field

[0001] The present disclosure relates to a system for raising and lowering a parking deck installed on a ship that transports vehicles, and more particularly, to a system for raising and lowering a plurality of decks using a single actuator. Background Art

[0002] A ro-ro ship is a ship that transports cargo in a manner that cargo such as vehicles or containers having their own mobility can be loaded onto a transport device such as a truck or trailer and rolled on or off the cargo from the stern or tonnage via a ramp.

[0003] These ro-ro ships can load and transport medium and large heavy equipment from vehicles of different sizes (i.e., passenger cars). In this case, when fixed decks are used, the volume of the cargo hold is wasted depending on the overall height of the vehicle to be transported, thus causing a problem because the overall cargo capacity is reduced.

[0004] In order to prevent this problem, Korean Patent Nos. 10-0979554, 10-1977611, 10-1996903, 10-1417954, etc. have been disclosed.

[0005] In No. 10-1996903, due to the installation of a scissor lift frame on a diesel vehicle (such as Figure 1 ), so the scissor lift frame operates as it moves between decks, thereby creating environmental and time-consuming issues such as exhaust gases filling the cargo hold during the moving and lifting operations.

[0006] On the other hand, in No. 10-1977611, one or four sets of lifting devices should be provided for each deck, which causes problems such as an increase in installation cost and an excessive number of maintenance points as the number of devices increases.

[0007] Related technical literature

[0008] Patent Literature

[0009] (Patent Document 0001) Korean Patent No. 10-0979554, published on September 2, 2010

[0010] (Patent Document 0002) Korean Patent No. 10-1977611, published on May 13, 2019

[0011] (Patent Document 0003) Korean Patent No. 10-1996903, published on July 5, 2019

[0012] (Patent Document 0004) Korean Patent No. 10-1417954, with a publication date of July 10, 2014 Summary of the Invention

[0013] Technical problem

[0014] The present disclosure provides a system for lifting and lowering a plurality of hatch panels using a single actuator.

[0015] Technical solution

[0016] To solve the above problems, a system for lifting and lowering a plurality of vehicle hatch panels using a single actuator is provided.

[0017] The system includes: a main rod arranged to pass through a first vehicle hatch panel, a second vehicle hatch panel,..., and an Nth vehicle hatch panel (where N is a natural number greater than 2) arranged continuously; an actuator that moves the main rod forward or backward along the arranged longitudinal direction; and a first hatch panel lifter, a second hatch panel lifter,..., and an Nth hatch panel lifter, which are respectively arranged at positions corresponding to the first vehicle hatch panel, the second vehicle hatch panel,..., and the Nth vehicle hatch panel, and are selectively fixed to the main rod to raise or lower the vehicle hatch panel at positions arranged according to the forward or backward movement of the main rod.

[0018] In this case, the main rod may include protruding fixing blocks, which are used to fix the first hatch panel lifter, the second hatch panel lifter,..., and the Nth hatch panel lifter respectively at positions corresponding to the first vehicle hatch panel, the second vehicle hatch panel,..., and the Nth vehicle hatch panel.

[0019] In addition, the first hatch panel lifter is a device for carrying the first vehicle hatch panel by connecting an end portion of the first vehicle hatch panel to a plurality of steel cables, and may include: a cable end block that is selectively fixed to the fixing block and moves according to the movement direction of the main rod; a plurality of steel cables, one end portion of which is fixed to the cable end block and the other end portion is fixed to a corner of the first vehicle hatch panel; and a plurality of cable sheaves that switch the traveling direction of the plurality of steel cables.

[0020] In addition, the cable end block is in a form in which the main rod passes through a central portion, and a plurality of steel cables are fixed to its rear surface, and based on the actuation direction of the main rod for raising the first vehicle hatch panel, a first rod selectively blocks the passage of the fixing block provided on its front surface.

[0021] Meanwhile, the first hatch panel lifter may further include a stopper that inhibits the advancement of the cable end block, so that the first vehicle hatch panel maintains a set height even in a state where the cable end block is released from the fixing block.

[0022] Further, the cable end block may have a second rod member selectively supported by a stopper on the rear surface.

[0023] Advantageous effects

[0024] According to the system of the vehicle deck of the lift boat according to the present disclosure,

[0025] it may relatively reduce the installation cost and reduce the operation cost according to the reduction of the maintenance area.

[0026] In addition, due to automation, the number of operators may be reduced. That is, since basically one actuator can perform all operations through automation, manpower can be saved and safety can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a photograph illustrating the lifting of the deck by a conventional method.

[0028] Figure 2 is a schematic view of the system of the vehicle deck of the lift boat according to the present disclosure as viewed from the top.

[0029] Figure 3 is as viewed from the side Figure 2 a schematic view of the system of the vehicle deck of the lift boat illustrated in

[0030] Figure 4 is a block diagram illustrating the cable end block.

[0031] Figure 5 is a top view of the cable end block according to an embodiment.

[0032] Figure 6 is a view for describing the deck anchor disposed on the support column.

[0033] Figure 7 is a view for describing the arrangement of the vehicle deck along the hull.

[0034] Figure 8 is an embodiment of connecting the bogie. DETAILED DESCRIPTION

[0035] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the drawings. At this time, it should be noted that when appreciating the drawings, like reference numerals denote like elements. In addition, detailed descriptions related to well-known functions or configurations will be excluded so as not to unnecessarily obscure the subject matter of the present disclosure. For the same reason, some components in the drawings are exaggerated, omitted, or schematically illustrated.

[0036] Figure 2is a schematic view of a system of vehicle deck plates of a lift boat according to the present disclosure as viewed from the top, and Figure 3 is as viewed from the side Figure 2 a schematic view of the system of vehicle deck plates of the lift boat illustrated in

[0037] Referring to Figure 2 and Figure 3 , a system 1000 of vehicle deck plates of a lift boat according to the present disclosure is a system that uses a single actuator M to lift and lower a plurality of vehicle deck plates D-1, D-2, and D-N, and includes a main rod R, an actuator M, and deck lifters P, P-1, P-2, and P-N.

[0038] The main rod R is arranged to pass through a first vehicle deck plate D-1, a second vehicle deck plate D-2, ……, and an Nth vehicle deck plate D-N (where N is a natural number greater than 2) arranged continuously.

[0039] The main rod R can be arranged on a fixed deck G, which is positioned above the first vehicle deck plate D-1, the second vehicle deck plate D-2, ……, and the Nth vehicle deck plate D-N.

[0040] The fixed deck G is a deck that is fixed to the hull and not lifted or lowered, and the first vehicle deck plate D-1, the second vehicle deck plate D-2, and the Nth vehicle deck plate D-N are decks that can be moved up and down according to the total height of the vehicle to be transported. The main rod R can be implemented as a cable made of steel wire, or can be implemented as a steel bar or a section steel depending on the operating conditions. The length of the main rod R corresponds to the length of the deck to be lifted or lowered. That is, the main rod R is arranged to have a length equal to the length of N vehicle decks.

[0041] The actuator M moves the main rod R forward or backward along the arranged longitudinal direction. The actuator M can be implemented in a form in which a motor and a gear are combined, and can be implemented in the form of a hydraulic cylinder, and is implemented in such a way that the cylinder shaft directly pushes or pulls the main rod R. In addition to the example shape, the actuator M can also be appropriately selected from various methods according to the weight of the vehicle deck plate to be lifted or lowered.

[0042] In the case of the downward actuation of the vehicle deck plates D-1 to D-N, a type may be used in which the actuator M is only actuated in the pulling direction (right -> left as shown), because it can be lowered by the weight of the vehicle deck plate itself.

[0043] The deck lifter P raises or lowers the vehicle deck plate at the arranged position according to the forward or backward movement of the main rod R.

[0044] In the present disclosure, the deck lifter P is not directly actuated by power to lift the deck by winding a steel cable, and only the deck lifter P is used to change the direction of the force so that the longitudinal movement of the main rod R becomes the height movement of the deck (I <-> II).

[0045] The deck lifter P is provided according to the number of vehicle decks. The deck lifter for carrying the first vehicle deck D-1 is represented by the identification code P-1, the deck lifter for carrying the second vehicle deck D-2 is represented by the identification code P-2, and the deck lifter for carrying the Nth vehicle deck D-N is represented by the identification code P-N. However, P-1 to P-N are all of the same configuration. Therefore, unless there are special reasons, it will be described using the representative identification code 'P'. Similarly, the vehicle deck will be described using 'D', which is the representative identification code.

[0046] Each deck lifter P is arranged at a position corresponding to each vehicle deck. For example, each deck lifter P can be arranged on the lower surface of the fixed deck G at the position where each vehicle deck is arranged. In the figure, the deck lifter P is provided above the center corresponding to the vehicle deck D, but this is only an example for convenience of description. The deck lifter P is arranged along the position where the main rod R is arranged.

[0047] The deck lifter P is selectively fixed to the main rod R and moves together according to the forward or backward movement of the main rod R.

[0048] The main rod R includes N protruding fixing blocks RB, which are used to fix the first deck lifter P-1, the second deck lifter P-2, and the Nth deck lifter P-N at positions corresponding to the first vehicle deck D-1, the second vehicle deck D-2, and the Nth vehicle deck D-N, respectively.

[0049] The fixing blocks RB are provided integrally with the main rod R. In the case where the main rod R is regarded as a cable, the fixing blocks RB can be said to be knots that prevent slipping.

[0050] The deck lifter P has a structure that is selectively coupled to the fixing block RB. For example, if the heights of all the first vehicle deck D-1, the second vehicle deck D-2 to the Nth vehicle deck D-N need to be changed from height II to height I, then the deck lifter P-1, the deck lifter P-2, and the deck lifter P-3 are all respectively coupled to the fixing block RB-1, the fixing block RB-2 - the fixing block RB-N. When the main rod R is actuated in the pulling direction (right -> left as shown in the figure) according to the actuation of the actuator M, the first vehicle deck D-1, the second vehicle deck D-2 to the Nth vehicle deck D-N are all lifted and lowered according to the movement of the deck lifter P-1, the deck lifter P-2, and the deck lifter P-3.

[0051] As described above, according to the present disclosure, by coupling the deck lifters of the vehicle decks that need position adjustment to the corresponding fixing blocks, the positions of multiple decks can be adjusted at once.

[0052] Hereinafter, reference will be made toFigure 3 Describe a specific embodiment of the deck elevator P.

[0053] The deck elevator P is a device that connects the end portion of the vehicle deck D to multiple steel cables 200a, 200b, 200c, and 200d and bears the weight of the vehicle deck D. Since the deck elevator P must support the weight of the vehicle deck when the vehicle deck (D) moves in height (I <-> II), it is preferably arranged to move along a fixed structure of the ship (such as the fixed deck G).

[0054] According to an embodiment, the deck elevator P includes a cable end block 100, multiple steel cables 200a, 200b, 200c, and 200d, and multiple cable sheaves 300h and 300v.

[0055] The cable end block 100 is selectively fixed to the fixed block RB and moves according to the moving direction of the main rod R. That is, the cable end block 100 is a block for moving along the main rod R.

[0056] Each of the multiple steel cables 200a, 200b, 200c, and 200d has one end portion fixed to the cable end block 100 (the rear surface based on the pulling direction of the main rod R) and the other end portion fixed to the vehicle deck D. In the figure, four steel cables are used, but this is only an embodiment to help understanding, and the number of steel cables used can be appropriately increased or decreased depending on the implementation environment of the vehicle deck D (the shape, size, and weight of the vehicle deck).

[0057] The cable sheaves 300h and 300v are used to change the traveling direction of each steel cable 200a, 200b, 200c, and 200d. The cable sheave 300h is used for horizontal direction switching, and the cable sheave 300v is used for vertical direction switching. One horizontal cable sheave and one vertical cable sheave can be used for each steel cable. The illustrated cable arrangement form and the usage form of the cable sheaves 300h and 300v are only an example to help understanding, and can be appropriately changed according to the implementation environment.

[0058] Figure 4 Is a schematic cross-sectional view for describing the cable end block. Refer to Figure 4 , the cable end block 100 includes a structure (through hole 130) through which the main rod R selectively passes through the central portion.

[0059] The cable end block 100 has multiple steel cables 200a, 200b, 200c, and 200d fixed to the rear surface based on the actuation direction of the main rod R (right -> left in the figure).

[0060] The cable end block 100 includes a first rod member 110 that selectively blocks the passage of the fixed block RB. InFigure 5 In an embodiment, the first rod 110 is illustrated as having a clamp shape, but in the present disclosure, the shape of the first rod 110 is not limited, and any structure that prevents the advancement of the through-hole 130 of the fixed block RB is applicable to the cable end block 100.

[0061] Figure 4 A is a cross-sectional view schematically illustrating the form of the cable end block 100. Figure 4 B describes a situation where it is not necessary to lift the vehicle hatch panel. The cable end block 100 is not affected by the movement of the main rod R. Figure 4 C describes the actuation of the cable end block 100 when it is necessary to lift the vehicle hatch panel.

[0062] According to the actuation of the first rod actuator 111, the first rod 110 has a shape that grips the main rod R, and the fixed block RB does not pass between the first rods 110 having the gripping shape. Therefore, the entire cable end block 100 moves along with the movement of the main rod R (right -> left). The vehicle hatch panel (D) is actuated to rise by multiple steel cables 200a, 200b, 200c, and 200d connected to the cable end block 100.

[0063] Figure 5 is a top view of the cable end block according to an embodiment.

[0064] Reference Figure 5 , the cable end block 100 is in a form in which the main rod R passes through the central portion, and multiple steel cables 200a, 200b, 200c, and 200d are fixed to its rear surface. Based on the actuation direction of the main rod R for raising the first vehicle hatch panel D-1, the first rod 110 selectively blocks the passage of the fixed block RB provided on its front surface. The first rod 110 can be implemented in the form of pliers. According to the actuation of the first rod actuator 111, the first rod 110 has a shape that grips the main rod R, and the fixed block RB does not pass between the first rods 110 having the gripping shape. Therefore, the entire cable end block 100 moves along with the movement of the main rod R (right -> left).

[0065] On the other hand, the hatch lift P may further include a stopper SP to inhibit the advancement of the cable end block 100 (left -> right), so that the first vehicle hatch panel D maintains a set height even in a state where the cable end block 100 is released from the fixed block RB. The left -> right movement of the cable end block 100 is inhibited by the stopper SP.

[0066] The cable end block 100 has a second rod 120 that is selectively supported by a stopper (SP) disposed on the rear surface of the cable end block 100. The second rod 120 engages with the stopper SP by the deployment actuation of the second rod 120. It is possible to select whether the second rod 120 switches to an open / closed state according to the actuation of the second rod actuator 121, whether the second rod 120 passes through the stopper SP, or whether the second rod 120 stops advancing by being supported by the stopper SP.

[0067] Figure 5 The cable end block 100 illustrated in Figure 4 is just one of several possible forms, and the present disclosure is not limited to

[0068] Figure 6 is a diagram for describing a hatch panel anchor disposed on a pillar. The hatch panel anchor 400 is disposed in a pillar (PIL) of a hull so as to fixedly support a vehicle hatch panel on the lower side surface of the hatch panel in a supported manner.

[0069] The hatch panel anchor 400 includes a first pillar stopper 410, a second pillar stopper 420, and a stopper actuator 430.

[0070] The first pillar stopper 410 supports the vehicle hatch panel D at a first height I, and the second pillar stopper 420 supports the vehicle hatch panel D at a second height II. According to the structure of the hull, a third pillar stopper (not illustrated) for supporting the vehicle hatch panel D to a third height III may be further provided. The stopper actuator 430 actuates the first pillar stopper 410 and the second pillar stopper 420 through a steel cable 440. The first pillar stopper 410 and the second pillar stopper 420 are in a form in which they are in close contact with the pillar PIL, such that the vehicle hatch panel D can move up and down in a folded state and support the lower surface of the vehicle hatch panel D in a deployed state.

[0071] The stopper actuator 430 may be implemented in a form in which it is disposed perpendicular to the pillar and directly connected to the steel cable 400. As illustrated, the stopper actuator 430 may be mounted on the fixed hatch panel D in a horizontal direction and connected to the first pillar stopper 410 and the second pillar stopper 420 by switching the pulling direction via a cable sheave 450.

[0072] Figure 7 is a diagram for describing the arrangement of the vehicle hatch panel along the hull. The width of the hull decreases in the bow or stern section. Accordingly, the arrangement of the vehicle hatch panel changes.

[0073] The lifting system 100 according to the present disclosure further includes a connecting bogie 500 that connects the main rods R in parallel to pass through the centers of the first vehicle deck D-1 and the second vehicle deck D-2 according to the arrangement forms of the first vehicle deck D-1, the second vehicle deck D-2, ……, and the Nth vehicle deck D-N along the hull.

[0074] Reference Figure 7 , the vehicle decks arranged in the hull areas '2-S4', '2-S2', '2-S1', etc. do not coincide with the vehicle decks in other parts of their centers. In this part, the main rod R on the left part is connected in parallel to the main rod R on the right part through the connecting bogie 500.

[0075] Figure 8 is an embodiment of the connecting bogie.

[0076] The connecting bogie 500 includes an edge frame 520, a cross frame 510, horizontal wheels C1 and vertical wheels C2. The edge frame 520 is formed in a square or rectangular shape and has a size corresponding to the reduced width of the hull. That is, the edge frame 520 is formed to have a horizontal length corresponding to the width of the vehicle deck.

[0077] The cross frame 510 is a frame that diagonally connects each corner inside the edge frame 520 to prevent the shape of the edge frame 520 from being changed by the force applied to the main rod R. The horizontal wheels C1 and the vertical wheels C2 are provided to reduce the friction caused by the direct contact between the connecting bogie (500) and the hull. The horizontal wheels (C1) are arranged at the four corners of the edge frame 520 and are in close contact with the hull. If necessary, the hull in contact with the horizontal wheels C1 may be further provided with tracks.

[0078] In addition, the exemplary embodiments of the present disclosure described in this specification and illustrated in the drawings are only provided for the purpose of easily describing the technical content of the present disclosure and helping to understand the specific examples of the present disclosure, and will not limit the scope of the present disclosure. It is obvious to those of ordinary skill in the art in the field related to the present disclosure that, in addition to the embodiments disclosed herein, other modifications based on the technical concept of the present disclosure can also be implemented.

Claims

1. A system for raising and lowering multiple vehicle hatches using a single actuator, the system comprises: a main rod arranged to pass through a first vehicle hatch, a second vehicle hatch, ……, and an Nth vehicle hatch arranged in succession, where N is a natural number greater than 2; an actuator to move the main rod forward or backward along the arranged longitudinal direction; and a first hatch lifter, a second hatch lifter, ……, and an Nth hatch lifter, which are respectively arranged at positions corresponding to the first vehicle hatch, the second vehicle hatch, ……, and the Nth vehicle hatch, and are selectively fixed to the main rod to raise or lower the vehicle hatch at positions arranged according to the forward or backward movement of the main rod.

2. The system according to claim 1, wherein, the main rod is a steel bar or a section steel.

3. The system according to claim 1 or 2, wherein, the main rod includes protruding fixing blocks for respectively fixing the first hatch lifter, the second hatch lifter, ……, and the Nth hatch lifter at positions corresponding to the first vehicle hatch, the second vehicle hatch, ……, and the Nth vehicle hatch.

4. The system according to claim 3, the first hatch lifter is a device for carrying the first vehicle hatch by connecting an end portion of the first vehicle hatch to multiple steel cables, and comprises: a cable end block which is fixed to the fixing block and moves according to the movement direction of the main rod when the first vehicle hatch needs to be raised or lowered, multiple steel cables, one end portion of which is fixed to the cable end block and the other end portion is fixed to a corner of the first vehicle hatch, and multiple cable sheaves for switching the traveling direction of the multiple steel cables.

5. The system according to claim 4, the cable end block is in a form in which the main rod passes through a central portion, and includes the multiple steel cables fixed to its rear surface, and a first gripper provided on its front surface to block the passage of the fixing block based on the actuating direction for raising the first vehicle hatch of the main rod.

6. The system according to claim 5, wherein, the first hatch lifter further includes a stopper for restraining the advancement of the cable end block so that the first vehicle hatch maintains a set height even in a state where the cable end block is released from the fixing block.

7. The system according to claim 6, wherein, the first gripper is a first rod member, and the cable end block has a second rod member which can be supported by the stopper on the rear surface.

8. The system according to claim 1, which further comprises: hatch anchors provided in the struts of the hull to fixedly support each of the vehicle hatches from the lower side surface of the vehicle hatch, and wherein the hatch anchor includes: a first strut stopper for supporting the vehicle hatch at a first height; a second strut stopper for supporting the vehicle hatch at a second height; and A stopper actuator that actuates the first strut stopper and the second strut stopper respectively from a deck support form to a deck passage shape.

9. The system according to claim 8, further comprising: A connecting bogie that is connected to the main rod in parallel, such that the main rod passes through the centers of the first vehicle deck, the second vehicle deck, ……, and the Nth vehicle deck according to the arrangement of the first vehicle deck, the second vehicle deck, and the Nth vehicle deck along the hull.

10. A ship comprising the system according to claim 1.

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