EP1431175A1 - Universelles Bootshebevorrichtung - Google Patents

Universelles Bootshebevorrichtung Download PDF

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Publication number
EP1431175A1
EP1431175A1 EP03425783A EP03425783A EP1431175A1 EP 1431175 A1 EP1431175 A1 EP 1431175A1 EP 03425783 A EP03425783 A EP 03425783A EP 03425783 A EP03425783 A EP 03425783A EP 1431175 A1 EP1431175 A1 EP 1431175A1
Authority
EP
European Patent Office
Prior art keywords
boat
boat lift
saddle
lift
pontoons
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03425783A
Other languages
English (en)
French (fr)
Inventor
Marco Pennesi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meta Meccanica Srl
Original Assignee
Meta Meccanica Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meta Meccanica Srl filed Critical Meta Meccanica Srl
Publication of EP1431175A1 publication Critical patent/EP1431175A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C1/00—Dry-docking of vessels or flying-boats
    • B63C1/10—Centring devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C1/00—Dry-docking of vessels or flying-boats
    • B63C1/02—Floating docks

Definitions

  • the present invention relates to boat lifting technologies for the execution of hoisting operations and in particular it concerns a universal lift able to lift indifferently both power boats and sailboats with fixed keel, with or without counterweights and other similar accessories.
  • known lifts are provided with supports for sustaining the keel, mounted fixedly on a structure positioned above a pair of parallel pontoons.
  • the latter internally bear pneumatic chambers provided with valve means adapted to allow or to inhibit the fluid exchange of air and water with the exterior of the pontoons.
  • the exchange is brought about by the operation o pressurisation means which, associated to the pneumatic chambers and operating in co-ordination with the valve means, enable to flood the chambers and consequently to sink the pontoons thereby allowing to position the boat above the supports; and they subsequently enable to eject water from the chamber to cause the emergence of the pontoons and the consequent lifting of the boat relative to the free surface of the water.
  • the document US 4391550 discloses a lift which provides for supporting the boat in three areas ofits cross sections identifiable: one, in correspondence with the end of the keel; the other two, in correspondence with the lateral gunwales of the hull, i.e. in proximity with the two edge areas in which the hull joins the deck of the boat, obviously when said deck is present.
  • the support system is obtained by means of a complex structure with mutually articulated elements, constituted by two long arms for the lateral abutment of the gunwales and by a horizontal cross member whereto the arms are connected and whereon the keel of the boat comes to bear.
  • Said arms are adjustable, as a function of the dimensions of the boat received above the lift, by means of a complex c able s ystem w hich allows t o vary the distance between the arms adapting it to the width of the boat interposed on each occasion.
  • the solution described in the first of the aforementioned documents is constructively simple and convenient to use.
  • it has fixed hull supports and a structure for sustaining said supports that is mainly suitable to sustain boats provided with keels having low vertical projection, as is the case for most power boards, or for sailboats having a movable, vertically retractable keel.
  • It is not, however, compatible with boats provided with fixed keel which may be fitted with counterweights, as instead is the case in numerous types of sailboats.
  • the boat lift described in the second document mentioned above is instead particularly suitable for hoisting fixed keel sailboats, but on the other hand it is highly complex and its structure is highly bulky.
  • a primary object of the present invention is to overcome the drawbacks of known solutions by means of a universal boat lift, i.e. a boat lift that is able indifferently to allow hoisting boats with or without keel which may also be very prominent from the hull and which is able to receive boats having the most widely different hull profiles, obviously within the dimensional limits of the boat lift.
  • a second object of the invention is to have a boat lift in which the bearing reactions exerted by the supports against the hull of the boat are rigorously controlled and have nearly uniform local intensities in all points of the hull during the lifting and the lowering of the boat relative to the free surface of the water, and this regardless of the shape and dimensions of the hull and of the weight of the boat to be hoisted.
  • Another object of the invention is to have bearings that are capable of being configured very rapidly and very simply, according to overall arrangements that can be varied every time it is necessary to use the boat lift to service a different type of boat and a different hull profile.
  • a further object of the invention is to provide a boat lift which is fitted with shoulders for the lateral abutment of the hull profile, able to allow the rapid activation and deactivation and also have simple and reliable structure, suitable to allow even a very high number of uses, without manifesting any sort of problems.
  • Yet another object of the invention is to provide a boat lift having a simple and small overall structure, which can easily and repeatedly be used remaining constantly moored in the boat slip reserved for a certain boat also to allow the lifting and dry-docking of the boat itself after each utilisation thereof: this being particularly advantageous to eliminate the danger that seaweed and/or fouling concretions may accumulate on the hull and/or to reduce the frequency of execution of the costly anti-fouling treatments normally required by boats moored within harbours.
  • a universal boat lift comprising: at least a hull support saddle; a pair of pontoons, sustaining in mutual combination said one or each saddle, oriented transversely, and internally provided with pneumatic chambers; valve means and pressurisation means associated with the pneumatic chambers and able to operate in mutual co-ordination to allow said pontoons to sink into, and emerge from the water: the boat lift being characterised in that said one or each saddle is provided with a central part having deep concave shape, open upwards, adapted to house, between said pontoons, indifferently keels of overlying powerboats or sailboats; said boat lift comprising at least a pair of supports, movable relative to the saddle, appropriately positioned relative to its central part; and adjustment means to adjust the configuration of said movable supports according to the actual geometric hull profile of the boat positioned over said one or each saddle.
  • the number 1 globally designates a boat lift advantageously usable to lift boats during hoisting operations for the inspection and maintenance of submerged parts and, or also, for the simple lifting meant to raise the hull out of the water, to minimise the permanence of the boat in water, whereon depends the formation on the hull of fouling and vegetation which notoriously reduce boat speed when underway.
  • the boat lift 1 essentially comprises: hull support saddles, globally designated as 3 and pontoons globally designated as 4.
  • the saddles 3, preferably in the number of three, are oriented transversely to the pontoons 4 and distributed regularly over the entire length thereof.
  • the saddles substantially have the overall shape of a planar plate, constituted by three mutually interconnected parts of stainless steel.
  • a central part 6 has a shape that is concave; U-profiled; deep, open upwards.
  • the U-profiled concavity is dimensioned in such a way as to be able to receive between the pontoons 4 keels 7 of various lengths, indifferently belonging to powerboats or sailboats 2 with fixed keel: this feature providing for wide versatility of use, i.e. a so-called universality of the boat lift 1 described herein.
  • the two lateral parts 11 have planar development with polygonal contour and have curvilinear edges 10 profiled to complement the lateral contour surface of the pontoons 4; thereby externally encompassing a peripheral arc thereof, along which saddles 3 and pontoons 4 are mutually welded.
  • the central part 6 is removably fastened to the lateral parts 11 of the saddle 3 by means of mutually opposite and complementary planar bolted flanges 26.
  • the flanges 26 thus allow to render the central part 6 removable and replaceable with greater or lesser depth in order to enlarge or reduce the field of dimensions of the keels 7 receivable on the saddle 3 both in terms of the actual application requirements and in terms of the water depth actually available in the harbour where the boat lift 1 is used.
  • the arrangement of the pontoons 4 is wholly conventional. They are constituted by cylindrical bodies, preferably made of fibreglass-reinforced plastic, entirely hollow and provided with pneumatic chambers 5.
  • the pontoons 4 are also fitted with valve means (not shown herein as they are wholly conventional) which can be associated to the pneumatic chambers 5, to allow or inhibit their exchange of air and water with the exterior.
  • Pressurisation means also not shown because they are wholly conventional, are associated to the pneumatic chambers 5 and interact in operative co-ordination with the valve means in such a way as to allow - as the case may be - the pontoons 4 and the saddles 3 associated therewith to sink into the water and emerge therefrom.
  • Said bearings 8 in particular comprise respective supports 13 oscillating in rotary fashion, borne by struts 14 oriented upwards ad projecting from the saddle 3 in overhang towards the hull.
  • the supports 13 include bearing bodies which are capable of swivelling about pivots 28 with horizontal axis, freely or with their mobility slightly checked by a suitable friction means.
  • the struts 14 are fastened to the saddle 3 in such a way as to be able to oscillating in rotary fashion about an axis of rotation 15 that is transverse to the plane of lay of the saddle 3 itself, passing through a pivot located in correspondence with the end of the struts 14 that is opposite the one bearing the supports 13.
  • Adjustable locking means - globally designated as 16 - are provided to vary in adjustable fashion the overall angular excursion of the struts 14 about said axis of rotation 15, according to the geometry of the various hull profiles of the boats 2 which can be associated to the saddles 3 when the boat lift 1 is in use.
  • Said locking means comprise a lead screw 17 laterally associated to the struts 14 by means of a helical coupling with a lead nut integrally borne by the struts 14 themselves.
  • a crank 27 for operating the lead screw 17 enables to make the struts 14 rotate about the axis of rotation 15 with angular excursion amplitudes which can be modulated according to the positioning requirements of the bearings 8.
  • the struts 14 in addition to being free to rotate about the axis of rotation 15, are also capable of being lengthened and shortened longitudinally at a direction substantially radial to the transverse profile 9 of the hull. This allows to lift the boat 2 over the saddles 3 and the pontoons 4, as is convenient to cause the emergence of the hull itself, to facilitate its inspection, maintenance and exposure to air.
  • the struts 14 are preferably constructed in such a way as to include linear fluid actuators, with controlled operation, connected to a hydraulic fluid unit.
  • Such an actuation means allows to regulate thrust on the various points of the hull in optimal and uniform fashion; and this obviously regardless of the geometric profile of the hull; the type, the size and the weight of the lifted boat 2.
  • Means 18 for detecting isobaric pressure mounted on the linear actuators allow to verify that such conditions of uniform application of the loads are actually achieved.
  • FIGS 1 through 4 also show that the boat lift 1 is further provided with a second pair of bearings 12 which includes movable shoulders 19, able to abut against the opposite bulwarks of the boat 2 positioned above the saddles 3.
  • the shoulders 19 are fastened to a fixed structure 20 by means of an articulation 21 and selectively adjustable fastening means, globally designated by the number 22.
  • the fastening means 22 are able to allow the rapid locking and unlocking of the shoulders 19 and for this purpose they are devised in such a way as to comprise elements 24 provided with toothed meshing surfaces 23, complementary and facing each other, which can be rapidly fastened and unfastened to each other.
  • a walkway 25 hinged to the fixed structure 20 allows to move with ease along the structure of the boat lift 1 to perform all desired operations.
  • the boat lift 1 described above fully achieves the objects set out above, being able to lift any type of boat, be it a sailboat, a powerboat, a boat with surface transmissions, stem feet, axis lines, bulb, fixed keel - within the dimensional limits of the central U-shaped part - and with any kind of hull.
  • FIG. 6 shows a possible, alternative, embodiment of the boat 1 that is particularly simple and economical to construct.
  • the bearings movable relative to the saddle 3 are embodied by a band designated by the number 30 which is positioned above the saddle 3 and has its own end segments 32 associated to the adjustment means (31) which comprise rotary drums 33 about which said segments 32 are wound.
  • the rotary drums 33 can be manual or motorised winches, which are supported by the structure 20 of the boat lift 1.
  • the adjustment means (13,14, 15, 16, 18, 31) generally comprise the supports (13) borne by the struts (14) oscillating in rotary fashion about the axis of rotation (15), with possible adjustable locking means (16) and with or without the measuring means (18), or the aforesaid adjustment means (31), depending on the various proposed solutions.
  • the appropriately co-ordinated phased operation of the drums 33 allows to lift the boat 2 from a lowered position, in which the band 30 is loose and the hull bears over the saddle 3, to a raised position, in which the boat 2 is supported by the band 30 at a certain height relative to the saddle 3.
  • the band 30 itself can naturally be ballasted so it lies in controlled configuration above the saddle 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transportation (AREA)
  • Bridges Or Land Bridges (AREA)
EP03425783A 2002-12-20 2003-12-05 Universelles Bootshebevorrichtung Withdrawn EP1431175A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRN20020022U 2002-12-20
ITRN20020022 ITRN20020022U1 (it) 2002-12-20 2002-12-20 Sollevatore univarsale di barche

Publications (1)

Publication Number Publication Date
EP1431175A1 true EP1431175A1 (de) 2004-06-23

Family

ID=32375570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425783A Withdrawn EP1431175A1 (de) 2002-12-20 2003-12-05 Universelles Bootshebevorrichtung

Country Status (2)

Country Link
EP (1) EP1431175A1 (de)
IT (1) ITRN20020022U1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7168380B2 (en) 2004-12-24 2007-01-30 Hotsun Holdings Pty Ltd Boat lift systems
US7827926B2 (en) 2008-02-01 2010-11-09 Stephen Payne Profiled pontoon for watercraft
JP2016534919A (ja) * 2013-10-09 2016-11-10 インピアンティ ポルチュアリ エ セルヴィツィ モラーチェ エスアールエル 自動ボート洗浄ドック、及び自動ボート洗浄ドック内でのボート洗浄のための関連の方法
EP3401206A1 (de) 2017-05-08 2018-11-14 Massimo Roefaro Absenkbare vorrichtung zum anheben eines bootes über wasser

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732102A (en) * 1986-03-10 1988-03-22 Holman Clifford W Portable, self-contained, self-adjustable craft lift and wet/dry storage system
US5002000A (en) * 1990-01-09 1991-03-26 Rutter Henry A Automatic leveler for boat lifts
DE19633414A1 (de) * 1995-10-12 1997-04-17 Goetz Siegmann Vorrichtung zum Heben und Senken von Booten im Wasser
DE10050095A1 (de) * 2000-10-09 2002-04-18 Peter Philipp Bootshebeanlage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732102A (en) * 1986-03-10 1988-03-22 Holman Clifford W Portable, self-contained, self-adjustable craft lift and wet/dry storage system
US5002000A (en) * 1990-01-09 1991-03-26 Rutter Henry A Automatic leveler for boat lifts
DE19633414A1 (de) * 1995-10-12 1997-04-17 Goetz Siegmann Vorrichtung zum Heben und Senken von Booten im Wasser
DE10050095A1 (de) * 2000-10-09 2002-04-18 Peter Philipp Bootshebeanlage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7168380B2 (en) 2004-12-24 2007-01-30 Hotsun Holdings Pty Ltd Boat lift systems
US7827926B2 (en) 2008-02-01 2010-11-09 Stephen Payne Profiled pontoon for watercraft
JP2016534919A (ja) * 2013-10-09 2016-11-10 インピアンティ ポルチュアリ エ セルヴィツィ モラーチェ エスアールエル 自動ボート洗浄ドック、及び自動ボート洗浄ドック内でのボート洗浄のための関連の方法
EP3401206A1 (de) 2017-05-08 2018-11-14 Massimo Roefaro Absenkbare vorrichtung zum anheben eines bootes über wasser

Also Published As

Publication number Publication date
ITRN20020022U1 (it) 2004-06-13

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