• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Drive mechanism (1) for davits (100) pivoting, davit type (100) comprising a frame (2) with at least one upper suspension arm (8) of a boat (4) supported by the corresponding columns (10), in turn provided with a base (9) in a fixed part (6) of installation of the davit, the base (9) being attached to said fixed part (6) through a horizontal joint (5) anterior parallel to the edge (7) of the fixed part (6) for pivoting the frame (2) from a parking position to another launching position, and comprising, at least, a linear actuator (11) that is relating, to the less, one of the columns (10) with the fixed part (6) to produce the pivoting of the frame (2) with the movement of the linear actuator (11); said linear actuator (11) being arranged inside said column (10). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2685173A1
    申请号:ES201700361
    申请日:2017-03-31
    公开日:2018-10-05
    发明作者:Tveit ØRJAN
    申请人:Heron Davits AS；
    IPC主号:
    专利说明:

    DESCRIPTION

    Swing mechanism for pivoting davits.

    Object of the invention 5

    The present invention relates to a folding mechanism for pivoting davits installed in ships, oil rigs and similar launch sites, which, based on a linear actuator, disposes of it inside the davit structure leaving it protected.
     10
    Background of the invention

    The stowage and launch of lifeboats, auxiliaries or fenders from ships, oil rigs and similar launch sites is carried out by means of complex davit, known as davits in the corresponding technical sector, which have evolved over time.

    Document US6357380 describes a rescue davit for storing, launching and retrieving a rescue boat, which has an A-shaped lifting arm that holds the rescue boat in stowage position and rotates approximately 20 ° around the base of the frame. in 20 form of A to help in the raising and lowering of the rescue boat. A pulley assembly and a davit stop assembly are mounted at the apex of the frame lift arm in A and accommodate a winch line at the apex of the frame in A. An electric winch lifts and lowers the rescue boat , through a cable, and a stop ring in said cable works together with the davit stopper to cause the cable 25 to rotate the lifting arm of the A-frame forward. A pole assembly mounted on the outside of the ship's side provides a support for the electric winch and supports the lifting arm with an A-shaped structure. It has the disadvantage that the rescue boat is at all times suspended outside the board, since the pole assembly does not retract into the board with the limited 20 degree movement of the lift arm around its base. Nor is it properly shaped to accommodate the rescue boat in position inside the board.

    US6626126 describes a davit device suspended on an associated ship, which comprises suspended and movable horizontal davit arms 35 for moving the boat from a parking position inside the board to a launching position outside it, and vice versa, while a lifting device can move the ship vertically, where the lifting device is fixed to the davit arms and vertical and horizontal movements can be carried out independently, in a controlled manner. It is complex since it requires suspending 40 davit arms and therefore a resistant upper structure, such as a roof or beams with large overhangs.

    US6955519 describes a davit system that includes an elongated base having a straight part and a front part tiltable downward with respect to the straight part. A cradle that transports the boat from an inner collected position to an inner position slides along the interior, which in order to be the one for introducing into the water said tiltable front part must reach the water. It has the disadvantage that it would not be usable when the height at which the boat is stowed is very high, which is the normal situation on large ships, where the deck can be tens of meters above the water level. fifty

    US2009050046 discloses a set of davit to launch a ship from a ship, comprising two separate davit, each including a substantially horizontal arm, a lifting cable that extends downward from a suspension frame in
    the boom and includes at least one fixing device at its end, such that the davit move between an inward position in which the suspension frames extend inward and an outward position in which the racks of The suspension extends outboard by rotating in a horizontal plane around the vertical axes of each davit, and where the suspension frames are movable along the arms so that a distance between said suspension frames it remains constant during the rotation of the arms between the two positions when the ship moves from a parking position to the launching position. It has the disadvantage that it requires coordination of movements between both davits.
     10
    To overcome the above problems, pivoting davits or davits are known, which comprise a frame provided with one or more upper arms for suspension, hoisting or launching of the boat-supported by the corresponding column or columns in turn provided with a base or plinth of support on a fixed part of the ship, usually its deck; the base being attached to said fixed part of the ship through an anterior horizontal joint 15 substantially parallel to the ship's board, so that by pivoting the frame around said joint between two extreme positions the boat is parked inside the board or alternatively hanging on the outside to lower it then using cables that hangs from davits. For example, patent document US 2647269 shows a possible embodiment of this variant, where the articulation is complex, and where the pivot 20 of the davit is carried out by means of ropes or cables attached to the davit, and which are used for the launching of the boat equally. It has the disadvantage that the davit is operating by gravity and controlled by cables (same cable to raise and lower the boat and to take it to the down position). In this version the ends or cables are exposed to the action of corrosion and require constant checks and maintenance and may fail at the time of launch.

    To avoid this inconvenience, modernly, the use of hydraulic cylinders is chosen. This is the most usual situation at present, with two possible options: a first one where the cylinders are located inside the davit in its socket or base, which is where there is the necessary space 30, but with the disadvantage that in this Position cannot apply its ends at the most favorable points and has very unfavorable thrust angles, which requires cylinders of greater weight and cost size in addition to a larger and more powerful and expensive hydraulic power plant. In addition it is also forced to oversize the thrust points of the davit and / or the cover to withstand the greatest efforts and determines the shape of the davit; The second option is to arrange the cylinders in the most favorable position, that is, between the cover and the frame columns, but this option presents the problem that the cylinders go outside the davit, which leaves them exposed to the Corrosion, and in case of breakage of hoses or seals, it implies the discharge of hydraulic fluid to the outside, and the consequent environmental problem. 40

    Description of the invention

    The pivoting mechanism for pivoting davits of the invention is implemented in davits of the type comprising a pivoting frame provided with at least one upper arm of a boat suspension (whether life-saving or auxiliary) or of a tender type protection, said arms supported by the corresponding column or columns in turn provided with a base or support plinth in a fixed part of the davit installation, the base being connected to said fixed part through an anterior horizontal joint substantially parallel to the edge of said part fixed with water (the ship's side for example) to pivot the frame from 50 a boat parking position inside the edge to another launching position outside the edge.

    On this basic configuration, and according to the invention, the davit also comprises, at least, a linear actuator that is relating at least one of the columns to the fixed installation part of the davit to produce the pivoting of the frame with the movement of the linear actuator, and with the special feature that said linear actuator is arranged inside said column. The fixing of the corresponding part (fixed or mobile) of the linear actuator to the column can be at any point thereof, intermediate or upper or lower end, and the position that causes a greater travel of the actuator will be sought, which It implies less power needed. Normally said most favorable position will be in the vicinity of the lower end of the column (10) and / or as far as possible from the horizontal joint, which transmits the force at the most favorable point at the beginning of the pivot. In addition, since the movement of the linear actuator is straight and produces a pivot, it is necessary that at least one of the two elements (fixed or extensible) of the linear actuator be attached to the column of the frame or to the fixed installation part of the davit through of a joint.
     fifteen
    In this way the force is applied at the most convenient point to minimize the power of the drive, since in the parking position (inner position) practically all the force used to remove the davit is used in its rotation, requiring a sizing minimum in terms of power requirements of the linear actuator and of the resistance of its thrust points, also being able to cover the linear actuators in the corresponding position in the normal position within the corresponding columns, so there are no remaining exposed to corrosion or other climatic factors, and in case of breakage of hoses or seals, hydraulic fluid spills are retained inside the columns with minimal environmental impact and avoiding slips of personnel on deck. Likewise with this configuration, the linear actuator 25 is practically vertical to the ground in the inner position, which means that much less space is taken up at the base of the davit.

    In addition, thanks to the protected disposition of the linear actuator and the application in the most favorable areas that require less power, the use of electric, and not exclusively hydraulic, linear actuators 30 is allowed as currently, thus avoiding the arrangement of the corresponding hydraulic power plants and their weight and environmental impact.
    With the invention the following additional advantages are achieved, or that go beyond what is sought:
     35
    - It greatly facilitates the assembly work of the components (eg motor and gearbox) as well as maintenance, and the components are located at the rear of the davit, in which access is much better. In addition, fewer hatches are necessary for assembly and maintenance.
     40
    - Great increase of the efficiency of the system, with greater use of the forces - lower maintenance.

    - Less power needed in the linear actuator, as it is centered inside the column and increases the distance between the turning point and the actuator, as well as its 45 elements (motors, pumps, etc.), with the consequent reduction of price and weight of the set - lower requirements of structural strength of the frame (less thicknesses, less reinforcements, etc.), which allows to optimize its design - installation process faster and less expensive
     fifty
    - Reduction of the forces on the roofs, eliminating the need to reinforce the roof or platform on which the davit will be installed - less space occupied inside and outside the davit.

    - By increasing the travel of the linear actuator by arranging it in the most appropriate position, it allows a better control of speed and position. The increase in travel is very convenient for the use of electric linear actuators, where their motors can work at high speed and with a lower maximum torque; This way you can get the most out of it. 5

    - The force made by the linear actuator is much more constant along its path (in current systems, there is a peak consumption at the beginning of taking out the davit).
     10
    - Smoother and quieter operation. Greater comfort for people in the boat and for operators of the davit.

    - Less suffering of the components since they are not subjected to peaks of effort
     fifteen
    - Lower current consumption (does not consume a peak current at the beginning). This allows reducing the electrical components (lower price, smaller size, smaller electrical cabinet) and lower power supply (both in main and in emergency). It is also better for emergency systems, since batteries are better sized if consumption is constant. twenty

    - Reduction of force peaks in case of accident.

    - Better internal distribution of the components.
     25
    - Allows you to modify the shape of the frame under the boat (leaving it more flat) and therefore lower it further into the inner position. This also allows you to use other boat models, as well as open the door to change the design of the davit. It also opens the possibility of reducing the total height of the davit.
     30
    - Space is freed in the lower part of the davit (area occupied by the cylinder in current designs) to put other components, such as the oil tank.

    - Security is increased (there is no element outside the davit in the inner position, nor any element that protrudes from the structure of the davit). 35

    - Optimization of the accumulators, which can be hydraulic or electric, reducing their size.

    - It results in a more compact davit. 40

    Description of the drawings

    Figure 1. Shows two side views of a davit incorporating the mechanism of the invention, in the stowage (inner) and launch (outer) position of the boat respectively. Four. Five

    Figure 2. Shows a rear elevation view of a davit version with two actuators, in the parking or inner position.

    Preferred Embodiment of the Invention 50

    The pivoting mechanism (1) for pivoting davits (100) of the invention is applied to davits (100) of the type comprising a frame (2) provided with at least one upper arm (8) for suspension of a boat ( 4), said arm or arms (8) supported by the corresponding column
    (10) or columns in turn provided with a base (9) or base of support in a fixed part (6) of installation of the davit - the deck of a ship for example-, the base (9) being attached to said part fixed (6) through an anterior horizontal joint (5) substantially parallel to the edge (7) of the fixed part (6) of installation of the davit (the side of a ship for example) to pivot the frame (2) from a boat parking position (4) on the inside of the edge (7) 5 to another launch position on the outside of the edge (7).

    With this basic configuration and according to the invention, the mechanism (1) comprises, at least, a linear actuator (11) that is relating at least one of the columns (10) to the fixed installation part (6) of the davit to produce the pivoting of the frame (2) 10 with the movement of the linear actuator (11); said linear actuator (11) being arranged inside said column (10).

    Since the movement of the linear actuator is straight and produces a pivot, it is necessary that at least one of the two elements (fixed or extensible) of the linear actuator (11) comprises a joint. Preferably both elements of the linear actuator (11) will be articulated respectively to the fixed part (6) of installation of the davit and to the corresponding column (10) respectively through two hinges (17), which allows the linear actuator (11) to oscillate. ) around them to adapt to the chilling movement as the linear actuator works. To allow such oscillation, it is provided that the 20 columns (10) internally configure widened housings (12) to the extent necessary to allow the amplitude of said oscillation. Furthermore, it is provided that ideally the upper hinge (17) of the linear actuator (11) is arranged at the upper end of said linear actuator (11), since in this way said oscillations occur in the intermediate part of the linear actuator, and the widened housing can be realized in the lower part of the column (10), lowering the center of gravity of the frame (2) and achieving a lighter design in the upper part. Alternatively, the upper hinge (17) may be arranged in the vicinity of the lower end of the column (10) or its base (9), which transmits the force at the most favorable point at the beginning of the pivot.
     30
    Thanks to the proposed configuration, the linear actuator (11) can be an electric linear actuator, which lowers costs and further facilitates positional and speed control. However, the invention has provided that the linear actuator (11) can also be a hydraulic cylinder, with its corresponding drive center, not shown. In either case, the linear actuator (11) is preferably in an inverted position, that is, with the piston or slider in the lower position. This allows the most delicate parts of the actuator (the cylinder of the hydraulic cylinder or the impeller of the slide in case of an electric linear actuator (11)) to be protected at all times by the interior of the corresponding column (10).
     40
    Likewise, the possible arrangement of a mechanical stop, not shown, in the linear actuator (11) has been provided to prevent its dismantling due to excessive travel.

    Sometimes, the mechanism for a davit (100) will comprise several linear actuators (11) (see fig. 2) arranged in one or several columns (10) of the frame (2), comprising at least one synchronization element between said linear actuators (11). Said synchronization elements may comprise, for example, an electromechanical synchronization, where, thanks to two linear encoders, not shown, arranged in both linear actuators (11), the actuator is synchronized so that they run the same stroke at each moment. Other types of synchronization may include travel sensors, shared mechanical axes 50, put 2 motors, put an engine in the center, etc.

    Describing sufficiently the nature of the invention, it is indicated that the description thereof and its preferred embodiment should be interpreted in a non-limiting manner, and that it covers
    all the possible variants of embodiment that are deduced from the content of the present specification and from the claims.
    权利要求:
    Claims (10)
    [1]

    1. Drive mechanism (1) for pivoting davits (100), of the type of davits (100) comprising a frame (2) provided with at least one upper suspension arm (8) of a supported boat (4) by the corresponding column (10) or columns, in turn provided with a base (9) or support base in a fixed part (6) of installation of the davit, the base (9) being attached to said fixed part (6 ) through an anterior horizontal joint (5) substantially parallel to the edge (7) of the fixed part (6) of the davit installation to pivot the frame (2) from a parking position of the boat (4) through the interior of the edge (7) to another launching position on the outside of the edge (7); characterized in that it comprises, at least, a linear actuator 10 (11) that is relating at least one of the columns (10) with the fixed part (6) of installing the davit to produce the pivoting of the frame (2) with the movement of the linear actuator (11), said linear actuator (11) being arranged inside said column (10).
     fifteen
    [2]
    2. Swing mechanism (1) for pivoting davits (100) according to claim 1 characterized in that the two elements of the linear actuator (11) are articulated respectively to the fixed part (6) of installation of the davit and to the column (10) corresponding through two hinges (17).
     twenty
    [3]
    3. Swing mechanism (1) for pivoting davits (100) according to claim 2, characterized in that the columns (10) are internally forming widened housings (12) to allow oscillations of the linear actuators (11).

    [4]
    4. Swing mechanism (1) for pivoting davits (100) according to claim 2 or 3, characterized in that the upper hinge (17) is arranged at the upper end of the linear actuator (11).

    [5]
    5. Swing mechanism (1) for pivoting davits (100) according to claim 2 or 3 characterized in that the upper hinge (17) is arranged in the vicinity of the lower end of the column (10) or its base (9 ).

    [6]
    6. Pivoting mechanism (1) for pivoting davits (100) according to any of the preceding claims characterized in that the linear actuator (11) comprises an electric linear actuator. 35

    [7]
    7. Pivoting mechanism (1) for pivoting davits (100) according to any of claims 1 to 5, characterized in that the linear actuator (11) comprises a hydraulic cylinder and its corresponding central drive.
     40
    [8]
    8. Pivoting mechanism (1) for pivoting davits (100) according to any of the previous 10 claims characterized in that the linear actuator (11) is in an inverted position.

    [9]
    9. Swing mechanism (1) for pivoting davits (100) according to any of the preceding claims characterized in that the linear actuator (11) comprises a mechanical stop (20).

    [10]
    10. Pivoting mechanism (1) for pivoting davits (100) according to any of the preceding claims characterized in that it comprises several linear actuators (11) 50 arranged in one or more columns (10) of the frame (2), comprising at least a synchronization element between said linear actuators (11).
    类似技术:
    公开号 | 公开日 | 专利标题
    ES2516700T3|2014-10-31|Procedure and device for handling a rotor hub of a wind power installation
    ES2235741T3|2005-07-16|WIND ENERGY INSTALLATION WITH MOBILE ON BOARD CRANE.
    JP5828409B2|2015-12-02|Ship power module and wind power propulsion ship equipped with the ship power module
    CN105644744A|2016-06-08|Throwing and recovering machine for ship-based underwater robot
    EP2536624B1|2014-10-08|Vessel comprising a stowable magnus-effect rotor
    CN101786489B|2012-06-20|Telescopic boat davit
    CN205418027U|2016-08-03|Ship base underwater robot is put in and is retrieved machinery
    EP3114023B1|2018-07-25|Boat with submersible stern hatch
    ES2685173B1|2019-07-18|Swing mechanism for pivoting davits
    CN105644733A|2016-06-08|Collapsible ship lamp mast
    JP4809120B2|2011-11-09|Hull retractable boat lifting device
    EP3002246B1|2017-11-08|System for reducing the counterweight of a crane
    CN108974257B|2020-07-24|Rescue boat winding and unwinding devices
    ES2685194B1|2019-07-18|Drive mechanism for pivoting davits
    CN208325548U|2019-01-04|A kind of wing bridge of ship wheel house
    ES2555266T3|2015-12-30|Lifting and pivoting device for a furnace lid, as well as oven installation and loading and maintenance procedure of said oven installation
    CN109458218A|2019-03-12|Straight arm type heavy duty Multipurpose tunnel operating platform
    JP5558192B2|2014-07-23|Sailing ship with tiltable sail
    RU2585181C1|2016-05-27|Launching and lifting device
    ES2337456T3|2010-04-26|LOAD LIFTING DEVICE, INTEGRATED IN A TOWER, FOR CORRUPTED VEHICLES, ESPECIALLY FOR COMBAT VEHICLES.
    CN107472460A|2017-12-15|Keep off checking bollard
    CN106314054A|2017-01-11|Multifunctional module of polar region ship
    ES2365549T3|2011-10-06|BOAT ROOF IN PARTICULAR YACHT ROOF, AND BOAT.
    FI68377C|1985-09-10|STOEDUPPSTAELLNING FOER FARTYG
    RU2003133176A|2005-04-27|LARGE LOADING LOADING CRANE
    同族专利:
    公开号 | 公开日
    WO2018166656A1|2018-09-20|
    ES2685173B1|2019-07-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB165492A|1920-01-31|1921-06-30|Henry Ramsden Mortell|Improvements in boat and the like stowing, lowering and releasing gear or apparatus|
    JP2002087376A|2000-09-14|2002-03-27|Kayaba Ind Co Ltd|Davit type boat lifting device|
    CN205440769U|2015-12-30|2016-08-10|浙江恒信船舶设备有限公司|Formula boat lifting frame is poured to hydraulic pressure|
    CN205396449U|2016-02-23|2016-07-27|江阴耐波特船用设备有限公司|Hydraulic pressure falls arm -type boat lifting frame|
    US1388831A|1919-08-11|1921-08-23|American Balsa Company Inc|Crane or davit|
    GB313883A|1928-06-18|1929-12-19|Karl Dingertz|Luffing davit|
    GB363805A|1930-10-14|1931-12-31|Karl Dingertz|Improvements in or relating to davits|
    US1897307A|1932-01-14|1933-02-14|Calvin B Stallard|Boat davit support|
    US2023258A|1933-11-16|1935-12-03|Young James|Davit|
    US2647269A|1948-01-30|1953-08-04|Klaus L Cappel|Boat davit|
    FR1305355A|1960-12-12|1962-10-05|Brissonneau & Lotz Ets|Boat davit on ship|
    US6626126B1|2000-01-13|2003-09-30|Vestdavit As|Davit device|
    US6357380B2|2000-02-14|2002-03-19|Swath Europe Limited|Lightweight rescue boat davit|
    EP1382523A1|2002-07-15|2004-01-21|Frank Haese|Carrying and pivoting arm with wide range of use |
    US6955519B1|2004-05-10|2005-10-18|Fred Ferderber|Davit system for lifting boats, jet skis, motorcycles and the like|
    US7743723B2|2005-07-21|2010-06-29|Azure Naval Architects B.V.|Davit assembly and a method for moving a boat|
    法律状态:
    2017-10-30| PC2A| Transfer of patent|Owner name: HERON DAVITS AS Effective date: 20171024 |
    2018-10-05| BA2A| Patent application published|Ref document number: 2685173 Country of ref document: ES Kind code of ref document: A1 Effective date: 20181005 |
    2019-07-18| FG2A| Definitive protection|Ref document number: 2685173 Country of ref document: ES Kind code of ref document: B1 Effective date: 20190718 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201700361A|ES2685173B1|2017-03-31|2017-03-31|Swing mechanism for pivoting davits|ES201700361A| ES2685173B1|2017-03-31|2017-03-31|Swing mechanism for pivoting davits|
    PCT/EP2018/000130| WO2018166656A1|2017-03-31|2018-03-28|Lowering mechanism for pivoting davits|
    [返回顶部]