EP4273084A1 - Élévateur de bateau équipé d'éléments latéraux rétractables - Google Patents

Élévateur de bateau équipé d'éléments latéraux rétractables Download PDF

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Publication number
EP4273084A1
EP4273084A1 EP23170889.2A EP23170889A EP4273084A1 EP 4273084 A1 EP4273084 A1 EP 4273084A1 EP 23170889 A EP23170889 A EP 23170889A EP 4273084 A1 EP4273084 A1 EP 4273084A1
Authority
EP
European Patent Office
Prior art keywords
longitudinal member
retractable
hinged
track
boat hoist
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.)
Pending
Application number
EP23170889.2A
Other languages
German (de)
English (en)
Inventor
Stefano Bonamin
Andrea Pavan
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.)
Step Technology Srl
Original Assignee
Step Technology 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 Step Technology Srl filed Critical Step Technology Srl
Publication of EP4273084A1 publication Critical patent/EP4273084A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
    • B66C19/005—Straddle carriers
    • 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
    • B63C3/00—Launching or hauling-out by landborne slipways; Slipways
    • B63C3/06—Launching or hauling-out by landborne slipways; Slipways by vertical movement of vessel, i.e. by crane

Definitions

  • the object of the present invention relates to a mobile hoist for lifting and transporting boats operated with rubber-tyred gantry cranes.
  • the jib crane is used to attach to the hull of the boat with special straps and lift it and then deposit it on a platform trolley that then transports it to the storage area.
  • This installation entails large and expensive work for the construction of the foundation base that serves as ballast and to stabilise the jib crane.
  • mobile boat hoists we mean wheeled trolley-type gantry cranes that are effectively able to guarantee the free movement of the boats within the area of a boatyard.
  • Mobile boat hoists are also effective for overcoming slight slopes, and they are extremely versatile since they are equipped with rubber wheels rotating around their axis and so can be steered.
  • the boat hoists on jetties see the attached Figs. 7-9 , is a hoist operating on jetties; the most commonly used lifting structure, however, can only be used where there are two jetties with an adequate capacity and at a pre-fixed distance that establishes the track of the hoist itself.
  • This type of system provides an internal distance for certain widths of the hull of the boats to be stowed and consequently their weight; for this reason, boats with larger hulls cannot be lifted.
  • a boat hoist on a slipway is a mobile boat hoist operating on a slipway, which must partially enter the water to lift the boat, and so for this reason all the components coming into contact with the water must be watertight and the propulsion unit must be located above the immersion level.
  • This system involves the construction of a slipway with a slight slope and therefore involves considerable environmental impact and a substantial use of natural area.
  • boat hoist requires continuous maintenance to protect the parts that go into the water from corroding and the continuous maintenance and cleaning of the slipway to remove algae and sludge deposits that would reduce the adhesion of the tyres of the hoist and thereby causing dangerous slippage during transit.
  • the main purpose of the present invention is to provide a gantry crane or mobile boat hoist that can overcome all the drawbacks of the prior art.
  • An important purpose of the present invention is to make available a gantry crane that can pick up boats without the need to construct infrastructure and therefore preserve as much area as possible near the pier where the boat will be lifted.
  • Another object of the present invention is to be able to use the entire area of the quay and so not having a single lifting area several boat hoists can be operated at the same time.
  • a further object of the present invention is to be able to optimise the boatyard storage areas and to be able to position the boats one in front of another and in points that would otherwise be inaccessible with the normal equipment used.
  • Another object of the present invention is to make available a mobile boat hoist that does not need a trolley for transporting the boat after lifting it.
  • a further object of the present invention is to make available a mobile boat hoist that does not require tracks fixed in the ground.
  • Another object of the present invention is to make available a boat hoist that easily adapts to the pre-set distance of the jetties.
  • An important object of the present invention is to make available a boat hoist that can lift a boat even where there is no quay.
  • a further object of the present invention is to make available a boat hoist that does not require a quay that has a slipway.
  • the mobile boat hoist of the invention comprises at least one pair of mutually spaced portal frames, a track connected at the top of each frame, at least one spaced-apart mutually connection crossbeam of said pair of frames, at least one lifting trolley that can slide on said track, and characterised by the fact that it comprises a retractable hinged longitudinal member with a horizontal axis near an upper end of each frame, a track connected to each retractable longitudinal member, hinged and collapsible stiffening devices comprising connection struts and tie rods between each retractable longitudinal member and the frame to which said longitudinal member is hinged; each of the above-mentioned frames comprises at least one lower longitudinal member connecting at least two vertical supports or legs in the lower part, and at least one upper longitudinal member connecting said vertical supports in the upper part, where said pair of frames are joined in a spaced apart manner to a first end side by said spacer beam, preferably in the upper part of each frame, where each of said upper longitudinal members is connected with the above-mentioned track of said one or more lifting
  • said mobile boat heist comprises moving devices connected with the lower part of the frame, allowing said boat hoist to move autonomously.
  • said moving devices are steerable, allowing the boat hoist to change the direction of its movement.
  • At least one connection beam is hinged that joins with the free end of the retractable longitudinal member of the opposite frame or that is connected with an identical connecting beam hinged on the end of the retractable longitudinal member of the opposite frame, maintaining the verticality and mutual spacing between the pair of frames also after the lifting of the boat carried out by said lifting trolleys, placed on the track of the retractable longitudinal member.
  • connection beam joint consists of a male slider moved by an actuator that joins with a female housing on the end of the retractable longitudinal member of the opposite frame or on the free end of the connection beam hinged on the retractable end of the opposite frame, facilitating the relative connection.
  • each track there are two or more trolleys for lifting the boat, which slide on each track at a pre-set distance from each other, which can be adjusted to adapt to the boat to be lifted.
  • the rotary movement between the upper longitudinal member and the retractable longitudinal member takes place on a hinge with a horizontal axis on the common end of the said upper and retractable longitudinal members by means of an actuator hinged to one end on the retractable longitudinal member and with the opposite end hinged fixed on the upper longitudinal member or on a connecting rod fixed to the upper longitudinal member.
  • said stiffening devices include a strut moved by an actuator with a fulcrum of a first end hinged on the upper longitudinal member or on the retractable longitudinal member and having a second end from which a first stay departs towards the rear side of the upper longitudinal member and one stay towards the front side of the overhang of the retractable longitudinal member.
  • the free end of said connecting rod and the first end of said actuator for rotating the retractable longitudinal member are mounted, so that during the alignment of the retractable longitudinal member the lifting by rotation of the strut can occur, from a first position leaning against the upper longitudinal member to the maximum rotation allowed by the length of the first stay.
  • the aforementioned stays serve to stabilise the upper longitudinal members with the retractable longitudinal members during the maximum rotation and alignment phase; they are divided into two segments and joined by an adjustment hinge that allows them to be correctly tensioned and closed during the rest phase.
  • the object of the invention consists of a mobile boat hoist equipped with retractable longitudinal members.
  • the boat hoist comprises a pair of spaced apart frames, where each frame comprises a lower longitudinal member 1 and an upper longitudinal member 5.
  • each frame comprises a lower longitudinal member 1 and an upper longitudinal member 5.
  • the corresponding ends of the lower longitudinal member 1 and of the upper longitudinal member 5 are connected by vertical supports or legs 4.
  • two motorised steerable wheel carriers 2 are mounted and on one of the two lower longitudinal members the drive unit 3 is mounted.
  • a first counterbalancing solution of the boat hoist provides that at the front, at the rear end of the lower longitudinal members 1, there are two attachments 29 to which the cable ring 30 is fixed by means of the shackle 32 and a tensioner 31 that is firmly anchored to a retractable ring 33 fixed to the quay to counterbalance the weight of the boat to be lifted.
  • a second counterbalancing solution of the boat hoist provides that the anchoring can also take place to a suitably sized concrete block 34 simply resting on the quay, which can be transported and repositioned at any point of the quay itself with the boat hoist hooking it to the attachments 35.
  • a third counterbalancing solution of the boat hoist provides that the counterbalancing of the weight of the boat to be lifted can also be carried out by suitably ballasting the rear legs 4, the lower longitudinal members 1, the crossbeam 6 and the upper longitudinal members 5 by inserting high specific weight metal grit inside them, or by providing metal plates to be fixed externally.
  • These last two solutions are preferable when, for any reason, it is not possible to anchor to the ground or there is a need to lift the boats at other points of the jetty.
  • a crossbar 6 is fixed using the hinge 7, which acts as a spacer and creates the trolley of the boat hoist.
  • the crossbar 6 can also be telescopic so that the trolley of the boat hoist can be changed.
  • the hinge 7 facilitates and reduces the assembly time of the boat hoist so that the number of cranes and work vehicles used can be reduced.
  • the upper members 5 are connected to the retractable longitudinal members 8 by means of the hinge 9 with a horizontal axis that allows a rotation between the two by 180°; aligning them horizontally creates a straight track for the sliding of the lifting assembly composed of two trolleys 10 connected to each other by a telescopic structure 11 controlled by a hydraulic cylinder 12.
  • the hydraulic cylinder 12 allows the distance between the two trolleys 10 to be changed and therefore also the spacing of the straps 19 so they can adapt correctly to the positioning of the hull of the boats to be lifted.
  • the trolley 10 is composed of a metal frame that slides by means of motorised wheels on the longitudinal members 5 and 8 along their entire length and by four winches 20 and four hook assemblies 21 where the lifting straps 19 are fixed.
  • each retractable longitudinal member with the corresponding upper longitudinal member are hinged and collapsible and comprise struts and tie rods or shafts between each retractable longitudinal member and the frame to which said longitudinal member is hinged.
  • the stays 16 and 17 are used to stabilise the upper longitudinal members 5 with the retractable longitudinal members 8 during the maximum rotation and alignment phase; they are divided into two segments and joined by means of an adjustment hinge 18 that allows them to be correctly tensioned and closed during the rest phase.
  • a first connection beam 22 is hinged to the external top of the retractable longitudinal members 8, inside which the male slider 23 is housed, controlled by the hydraulic cylinder 24, and a second connection beam 25 that carries the female housing.
  • connection beam 22 and the connection beam 25 can remain connected via the male slider 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jib Cranes (AREA)
EP23170889.2A 2022-05-02 2023-04-29 Élévateur de bateau équipé d'éléments latéraux rétractables Pending EP4273084A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102022000008852A IT202200008852A1 (it) 2022-05-02 2022-05-02 Motoscalo dotato di longheroni retrattili

Publications (1)

Publication Number Publication Date
EP4273084A1 true EP4273084A1 (fr) 2023-11-08

Family

ID=82483395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23170889.2A Pending EP4273084A1 (fr) 2022-05-02 2023-04-29 Élévateur de bateau équipé d'éléments latéraux rétractables

Country Status (2)

Country Link
EP (1) EP4273084A1 (fr)
IT (1) IT202200008852A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102691962B1 (ko) * 2024-04-05 2024-08-05 주식회사 근영테크 선박인양용 다기능 크레인

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452937A (en) * 1946-01-19 1948-11-02 Sporting Specialties Company Boat-carrying trailer and the like
FR2034106A1 (fr) * 1969-02-05 1970-12-11 Verdy Robert
US4236859A (en) * 1978-05-22 1980-12-02 Marine Travelift, Inc. Mobile hoist
FR2511355A1 (fr) * 1981-08-14 1983-02-18 Lestapis Bertrand De Elevateur a bateaux de 300 tonnes, autonome et mobile
US4403704A (en) * 1981-04-08 1983-09-13 Hitachi, Ltd. Vertically pivotable boom bending device for crane
US4880124A (en) * 1988-04-22 1989-11-14 Marine Travelift, Inc. Straddle crane steering system
DE29704234U1 (de) * 1997-03-08 1997-06-12 Knijpstra Konstruktie B.V., Terband Bootslift
US20150125207A1 (en) * 2011-12-30 2015-05-07 Jung Sang Lee Yacht lifting apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452937A (en) * 1946-01-19 1948-11-02 Sporting Specialties Company Boat-carrying trailer and the like
FR2034106A1 (fr) * 1969-02-05 1970-12-11 Verdy Robert
US4236859A (en) * 1978-05-22 1980-12-02 Marine Travelift, Inc. Mobile hoist
US4403704A (en) * 1981-04-08 1983-09-13 Hitachi, Ltd. Vertically pivotable boom bending device for crane
FR2511355A1 (fr) * 1981-08-14 1983-02-18 Lestapis Bertrand De Elevateur a bateaux de 300 tonnes, autonome et mobile
US4880124A (en) * 1988-04-22 1989-11-14 Marine Travelift, Inc. Straddle crane steering system
DE29704234U1 (de) * 1997-03-08 1997-06-12 Knijpstra Konstruktie B.V., Terband Bootslift
US20150125207A1 (en) * 2011-12-30 2015-05-07 Jung Sang Lee Yacht lifting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102691962B1 (ko) * 2024-04-05 2024-08-05 주식회사 근영테크 선박인양용 다기능 크레인

Also Published As

Publication number Publication date
IT202200008852A1 (it) 2023-11-02

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