• 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:
    Emergency drive device (1) for davits (2) of life-saving equipment, applicable to davits (2) comprising, at least, an electric motor (5) in its drive, comprising: - at least one generator (3) manually operated and - at least one voltage adapter (4) for adapting the voltage generated in the generator (3) to drive the motor or motors (5) of the davit (2). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2685176A1
    申请号:ES201700362
    申请日:2017-03-31
    公开日:2018-10-05
    发明作者:Ørjan TVEIT
    申请人:Heron Davits AS；
    IPC主号:
    专利说明:

    DESCRIPTION

    Emergency drive device for life equipment davits.

    Object of the invention 5

    The present invention relates to an emergency drive device for life-saving equipment davits in the absence of electrical power - a location called "dead ship" in the corresponding technical sector - on a ship, platform (eg oil) or any another possible location of the davit with the lifeguard equipment. 10

    Background of the invention

    The stowage and launch of life-saving equipment (emergency boats, liferafts, etc.) from ships or other platforms (docks, oil stations, etc.) is carried out by means of complex davit, known as davits in the corresponding technical sector , which have evolved over time.

    In the current situation, said davits usually comprise a mobile 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 support base in one part. fixed of the ship, usually its deck, so that by moving the davit between two extreme positions the boat is parked inside the board or alternatively hanging on the outside to lower it then by means of cables from which it hangs from the upper arms. In another type of davits said frame is fixed, the davit having only the 25 movements of raising and lowering the boat.

    The operation of the davit, to remove the davit from the storage position to the launch position, is currently carried out mainly by means of hydraulic cylinders (there are other variants that do so by gravity or by rotation), although the applicant for the This patent also holds other patent applications that propose purely electric drives with the corresponding electric motors and without hydraulics. However, logically the pumps of the hydraulic power plants of the drive cylinders that are currently used are also provided with the corresponding electric drive motors. 35

    The drive (both to take the boat to the launching position and to lift the boat) of the hydraulic davits nowadays in case of absence of electric power on a ship or platform (situation known as “dead ship” in the sector particular technician) is carried out by means of hydraulic accumulators, which are preloaded with pressure of 40 so that they have the necessary power to drive the cylinders in case of dead ship. These systems also include a manual pump, to recharge the pressure of the accumulators if necessary.

    However, the use of hydraulic drives poses an environmental risk in case of breakage of hoses or seals, which implies the discharge of hydraulic fluid to the outside, with the aggravating factor of the hydraulic accumulator having its own elements with respect to the drive itself Conventional hydraulic, increases this risk. On the other hand, the batteries also have the problem of the risk of explosion or accident, because they are under pressure. fifty




    Description of the invention

    The emergency drive device for davits of the invention is applied to davits comprising at least one electric motor for its drive (direct or for driving hydraulic pumps), and according to the invention comprises:

    - At least one manual drive generator and

    - At least one voltage adapter to adapt the voltage generated in the generator to drive the motor or davit motors. 10

    In this way in case of dead ship or problems in hydraulic systems, the davit will always be able to be operated. It is primarily intended to take the davit to the launching position, although it is also valid to raise a boat when it is at sea.
     fifteen
    As advantages of the proposed configuration, in addition, you get:

    - Elimination of hydraulic accumulators and associated environmental problems.
     twenty
    Looking for the above, other advantages were found:

    - More efficiency compared to hydraulic systems. Less effort is needed to take out the davit regarding hydraulic systems.
     25
    - Faster loading.

    - Lower weight when dispensing with hydraulic accumulators. This also allows it to be positioned within the davit in any position, either as a whole or by separating the different components from each other (the accumulators are normally located in the lower part of the davit or on the roof itself due to its high weight) and even near or within electricity cupboard.

    - The space occupied within the davit is substantially reduced.
     35
    - It is not necessary to have a hydraulic system (lower weight).

    - There are no systems under pressure (greater safety, better for transport and for commissioning, etc.).
     40
    - Easier to control the correct filling of the system and its level of availability, being able to have the components both inside and outside the davit (in hydraulic systems it is better to have the components visible for better maintenance and inspection).
     Four. Five
    - Easier to install the components inside the davit (the accumulators are very heavy and difficult to handle).

    - Much quieter system.
     fifty
    - Much less maintenance.

    - Easily scalable (version with several cranks and generators to charge several supercapacitors simultaneously), to further reduce the time needed to take out or retrieve the boat.

    - It is possible to regulate the force applied to the generation. 5

    - Simplification of the mechanical system.

    - Absence of nitrogen from hydraulic accumulators.
     10
    But in addition to the above, the advantage was found that it can be complemented with the existing davit movement system (use the same electric motor, the same frequency inverter, the existing mechanics, etc.) without the need to include new components (accumulators hydraulic), and it could even be possible to directly drive the three-phase motor through the generator if it is three-phase and is adapted to the characteristics of the motor. fifteen

    Description of the drawings

    Figure 1. Shows a side view of an electric drive davit in the launch position. twenty

    Figure 2. Shows a diagram of a first variant of the device of the invention.

    Figure 3. Shows a diagram of a second variant of the device of the invention.
     25
    Preferred Embodiment of the Invention

    The emergency drive device (1) for davits (2) of the invention is applied to davits (2) (see fig. 1) comprising at least one electric motor (5) in its drive, and in accordance with The invention comprises:

    - At least one manually operated generator (3) and

    - At least one voltage adapter (4) to adapt the voltage generated in the generator (3) to drive the motor or motors (5) of the davit (2). 35

    The adapter (4) can be a voltage booster, usable if the generator (3) and the motor (5) are three-phase, or it can be a frequency converter, usable in most cases.

    In this way, available energy is available to drive the motors (5), either with direct drive of the davit (2), or with the drive of the hydraulic pumps, not shown, for driving the drive cylinders of the davit (2) or to climb the boat in dead ship situations, but also in any other situation.

    Preferably, the generator (3) comprises a three-phase alternating current generator, since the driving motors of the davits or of the hydraulic pumps are of squirrel cage, three-phase alternating current of great robustness. In this case the adapter (4) can be a voltage booster or a frequency converter. In addition, it is preferred that the generator (3) comprises a permanent magnet generator.
     fifty
    In a first variant of the invention, the scheme of which is shown in fig. 2, the input of the voltage adapter (4) is directly connected to the generator (3), and its output is directly connected to the three-phase motor (5) of the davit drive (2). This
    form can be dispensed with batteries. In this case, as stated, the adapter (4) can be a voltage booster or a frequency converter.

    Another second variant of implementation of the invention, the scheme of which is shown in fig. 3, comprises, at least, a battery (6) connected to the generator output (3), 5 previously having a rectifier (8) of alternating current to direct current since the capacitors in energy storage for later recovery require power in Continuous, and arranging at the output of the battery (6) the frequency converter (4) to be able to power the three-phase motor (5) of the davit drive, if it accepts its direct current input, or insert a DC / AC converter ( 9) connected to the input of the frequency converter 10 (4) otherwise, which is precisely the case shown in fig. 3. The operating frequency of the motor (5) during emergency operation is set to be very low, so that the necessary current is small (proportional to the power demanded by the system).
     fifteen
    Most preferably, the battery (6) comprises a supercapacitor (7) or a supercapacitor battery (7), which is the embodiment shown in fig. 3, although it could also be any other type of battery, not represented. As advantages of the use of supercapacitors, the following are obtained:
     twenty
    - Fast loading / unloading.

    - They are able to supply more power than accumulators.

    - They can provide high load currents. 25

    - High number of loading / unloading cycles.

    - Very low maintenance.
     30
    - They work in very adverse temperature conditions.

    - Electrical performance close to 98%. In addition, as toxic elements lack in its composition, it is much safer from an environmental point of view.
     35
    For its part, the rectifier (8) may comprise a filter (80) and preferably may also comprise a DC adapter (81) if necessary to raise the generator output voltage.

    The optional arrangement of an individual load selector (10) of the different 40 battery elements (6) is provided, to charge them individually without having to use a voltage booster, and with a lower requirement for manual operation .

    The provision of an indicator (11) (for example a display) is also provided to display the state of charge of the battery (6) and see if it is sufficient or must proceed to manual operation.

    In addition, the provision of a battery charger (12) (6) connected to the ship's network (14) is provided, to always have the battery elements properly charged while there is voltage in the network (14). fifty

    As for the frequency converter (4), a model that allows direct DC power supply can be used with the advantage of not having to include an exclusive DC / AC converter.

    It is envisioned that all the components of the device (1) can be arranged in a storage box (15), so that they are collected modularly, which can be located inside or outside the davit, the manual actuation being always accessible to the operator in any position. There is also the option of having the 5 separate components if necessary for a better use of the available space (even being able to be inside the davit's electrical cabinet).

    Regarding manual operation, the arrangement of a crank (16) is preferably provided; also ideally it will be adjustable. In addition, optionally between 10 the hand-operated crank (16) and the generator (3) a multiplier transmission (17) can be arranged to increase the revolutions.

    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 encompasses all of the possible embodiments that are deduced from the content of the present memory and claims.
    权利要求:
    Claims (17)
    [1]

    1. Emergency drive device (1) for davits (2) of life-saving equipment, applicable to davits (2) comprising at least one electric motor (5) in its drive characterized in that it comprises: 5
    - At least one manually operated generator (3) and
    - At least one voltage adapter (4) to adapt the voltage generated in the generator (3) to drive the motor or motors (5) of the davit (2). 10

    [2]
    2. Emergency drive device (1) for davits (2) of life-saving equipment according to claim 1 characterized in that the adapter (4) is selected from:
    - A frequency converter, or 15
    - A tension elevator.

    [3]
    3. Emergency drive device (1) for davits (2) of life-saving equipment according to any of the preceding claims characterized in that the generator (3) 20 comprises a three-phase alternating current generator.

    [4]
    4. Emergency driving device (1) for davits (2) of life-saving equipment according to any of the preceding claims characterized in that the generator (3) comprises a permanent magnet generator. 25

    [5]
    5. Emergency drive device (1) for davits (2) of life-saving equipment according to any of claims 2 to 4 characterized in that the input of the adapter (4) is directly connected to the generator (3), and its output is directly connected to the three-phase davit drive motor (5). 30

    [6]
    6. Emergency driving device (1) for davits (2) of life-saving equipment according to any of claims 2 to 4, characterized in that it comprises at least one battery (6) connected to the generator output (3); previously having a rectifier (8) of alternating current to direct current, and having at the output of the battery (6) an adapter (4), based on an input frequency converter adapted to direct current, to power the three-phase davit drive motor (5).

    [7]
    7. Emergency drive device (1) for davits (2) of life-saving equipment according to any of claims 2 to 4, characterized in that it comprises at least one battery (6) connected to the generator output (3); previously having a rectifier (8) of alternating current to direct current, and having at the output of the battery (6) a DC / AC converter (9) connected to the input an adapter (4) based on a frequency converter of input not adapted to direct current to power the three-phase motor (5) of the davit drive. Four. Five

    [8]
    8. Emergency drive device (1) for davits (2) of life-saving equipment according to claim 6 or 7, characterized in that the battery (6) comprises an electric battery.

    [9]
    9. Emergency drive device (1) for davits (2) of life-saving equipment according to claim 6 or 7, characterized in that the battery (6) comprises a supercapacitor (7) or a supercapacitor battery (7).
    [10]
    10. Emergency drive device (1) for davits (2) of life-saving equipment according to any of claims 6 to 9, characterized in that the rectifier (8) comprises a filter (80) and / or a voltage adapter (81) of DC.

    [11]
    11. Emergency actuation device (1) for davits (2) of life-saving equipment 5 according to any of claims 6 to 10, characterized in that it comprises an individual charge selector (10) of the different elements of the battery (6), for Charge them without having to use a booster.

    [12]
    12. Emergency actuation device (1) for davits (2) of life-saving equipment 10 according to any of claims 6 to 11, characterized in that it comprises an indicator (11) of the state of charge of the battery (6).

    [13]
    13. Emergency drive device (1) for davits (2) of life-saving equipment according to any of claims 6 to 12 characterized in that additionally 15 comprises a battery charger (12) connected to the network (14) to have always the battery elements charged correctly while there is voltage in said network (14).

    [14]
    14. Emergency driving device (1) for davits (2) of life-saving equipment according to any of the preceding claims characterized in that it comprises a storage box 20 (15) for all its components.

    [15]
    15. Emergency drive device (1) for davits (2) of life-saving equipment according to any of the preceding claims characterized in that the manual drive comprises a drive handle (16). 25

    [16]
    16. Emergency drive device (1) for davits (2) of life-saving equipment according to claim 15 characterized in that the crank (16) is adjustable.

    [17]
    17. Emergency driving device (1) for davits (2) of life-saving equipment 30 according to any of claims 15 or 16 characterized in that a transmission is arranged between the hand-operated crank (16) and the generator (3) ( 17) multiplier to increase revolutions.
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    同族专利:
    公开号 | 公开日
    EP3601032A1|2020-02-05|
    EP3601032B1|2022-02-23|
    ES2685176B1|2019-07-18|
    WO2018166655A1|2018-09-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US755241A|1903-04-13|1904-03-22|Wilbur F Powers|Life-boat-launching apparatus.|
    US4703188A|1987-01-05|1987-10-27|Power Group International Corp.|Power source for starter motors|
    EP1327578A1|2000-06-27|2003-07-16|Anthony Keith Webb|Life boat handling system|
    CN202381271U|2011-12-14|2012-08-15|戴人豪|Hand-operated power generation mechanism|
    GB359222A|1930-10-30|1931-10-22|Edward Frank Spanner|Improvements in boat raising and lowering gear|
    DE747656C|1941-04-18|1944-10-09|Folding davit|
    DE20304421U1|2003-03-19|2003-06-12|Eusterbrock Steffen|Emergency device for charging starter batteries for engines such as in sailing boats uses human muscle power with a spring loaded cord and a commercial dynamo|
    DE202010011257U1|2010-08-11|2010-10-21|D-I Davit International Gmbh|Bereitschaftsboot- / Rettungsinseldavit|
    JP2013023203A|2011-07-15|2013-02-04|Mansei Inc|Turning mechanism of crane for ship and life-saving equipment|
    JP2013078452A|2011-10-03|2013-05-02|Paramount Bed Co Ltd|Air mattress|
    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: 2685176 Country of ref document: ES Kind code of ref document: A1 Effective date: 20181005 |
    2019-07-18| FG2A| Definitive protection|Ref document number: 2685176 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
    ES201700362A|ES2685176B1|2017-03-31|2017-03-31|Emergency drive device for life equipment davits|ES201700362A| ES2685176B1|2017-03-31|2017-03-31|Emergency drive device for life equipment davits|
    EP18719436.0A| EP3601032B1|2017-03-31|2018-03-28|Emergency drive device for life-saving equipment davits|
    PCT/EP2018/000129| WO2018166655A1|2017-03-31|2018-03-28|Emergency drive device for life-saving equipment davits|
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