US3687308A - Ship{40 s loading ramp - Google Patents

Ship{40 s loading ramp Download PDF

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Publication number
US3687308A
US3687308A US78860A US3687308DA US3687308A US 3687308 A US3687308 A US 3687308A US 78860 A US78860 A US 78860A US 3687308D A US3687308D A US 3687308DA US 3687308 A US3687308 A US 3687308A
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US
United States
Prior art keywords
beams
ship
ramp
track
loading ramp
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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.)
Expired - Lifetime
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US78860A
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English (en)
Inventor
Lennart Apelstrand
Per Fagerlund
Stig Jarl
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PER FAGERLUND
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PER FAGERLUND
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Publication of US3687308A publication Critical patent/US3687308A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • B63B27/143—Ramps

Definitions

  • a loading ramp pivotally connected to a ship comprises two unitary side beams and a travelling track carried thereby.
  • This travelling track is composed of two parts of which an inner one extends outwards from the ship along part of the length of the beams to which it is permanently fixed.
  • An outer part of the travelling track is hingedly connected to the inner part and is longer than the difference between the inner part and the length of the beams.
  • the outer part is further provided with laterally extending portions upon which the ends of the beams will rest when the ramp is folded down.
  • This ramp may be arranged in connection with an opening in the ships side, but the best availability of the cargo spaces is obtained if the ramp is arranged in the aft body or stem portion of the ship. This will, however, presuppose a possibility to berth the ship along a quay provided with a step in such a manner that the trucks may be driven straight into the ship.
  • a ramp is usually hingedly connected to the ship in such a manner that the inner end of the ramp is level with a deck, and during a voyage the ramp is swung to a vertical position. It will often be necessary to use a fairly long ramp, and in raised position this may reach above the superstructure of the ship, which is undesirable with respect to the stability, and furthermore means that the ramp structure will act as a large windcatcher.
  • a loading ramp according to the invention is pivotably connected to the ship and includes two unitary side beams and a travelling track carried thereby.
  • This travelling track consists of an inner part extending from the ships side outwards along pan of the length of the beams and being fixedly connected thereto, as well as of an outer part, which is hingedly connected to the inner part but is free from the beams in such a manner that the outer part, when the ramp is swung to vertical position, may be folded down alongside the inner part, said outer part being longer than the difference between the inner part and the length of the beams and having laterally extending portions upon which the ends of the beams will rest in folded down position.
  • the ramp is arranged obliquely in relation to the longitudinal axis of the ship and is then designed in such a manner that it will be possible to drive into the ship from a quay side being parallel to the ship, along a bent travelling track having a big radius.
  • FIG. 1 shows a portion of a ship along a quay and provided with a loading ramp arranged obliquely in relation to the longitudinal axis of the ship.
  • FIG. 2 shows the ramp during a lowering operation
  • FIGS. 3 and 4 show the ramp in folded down position and with the ship in different vertical positions in relation to the quay.
  • the ramp has such a length and shape, that it from the aft body or stem portion of the ship will reach across the edge of the quay and makes possible a passage for trucks from the quay directly into the ship.
  • the ramp consists of two unitary side beams 13 and 14, respectively, as well as a travelling track inconnecting said beams.
  • the track contains an inner part 15, which is fixedly connected to the beams and extends outwards from the ship to about 1 of the length of the beams.
  • an outer track part 16 is connected by means of hinges 17 in such a manner that this outer part may be swung downwards along the inner part when the ramp is raised to vertical position.
  • the end portion of the outer part consists of a flap 18, which is hingedly connected to the travelling track proper.
  • the hinges 19 between the flap and the outer track part are arranged adjacent to the transverse axis through the point of gravity, whereby the flap, within practical limits, will automatically maintain a horizontal position independent of the inclination of the outer track part 16 in relation to the quay.
  • the flap is broader than the distance between the beams at the free ends thereof.
  • the length of the beams is thus less than the combined length of the two track parts and the beams will rest on the outer track part at about the mid portion of said part. In this manner the high load from the beams will be transferred to the flap 18 by way of the outer track part 16, whereby the pressure at the ends of the beams will be distributed over a comparatively large area. This is important as on most occasions the quay is not designed to take care of concentrated loads of a magnitude likely to appear at the ends of the beams.
  • the outer track part is to this end provided with laterally extending brackets 20, which possibly may be designed in such a manner that they may be retracted into the track structure, when the ramp is being raised.
  • each beam is provided with a sliding member 21 the position of which in relation to the beam is adjustable by means of a pressure fluid operated ram 22.
  • the sliding members will rest against the above mentioned brackets 20 extending from the outer track part.
  • FIGS. 3 and 4 show two different positions where the attachment of the ramp to the ship is located higher than, and lower than the quay, respectively.
  • the beams are designed with due respect to the loads to be encountered, and the shape of the beams illustrated in FIGS. 3 and 4 has been found suitable for an actual structure.
  • the beam 14 adjacent to the ship is bent outwards. In this manner it will be easier for trucks to turn towards the longitudinal direction of the ship.
  • the broader flap 18 may, when the ramp is swung to vertical position, be brought in between the beams, which diminishes the space required for stowage. In swung up position only the ends of the beam will extend above the hinge joint 17 between the track parts whereby the windcatching area will be reduced.
  • the ramp is operated by means of two winches 23 and 24 of which the former is mounted in the ships superstructure, and the other, 24, is mounted on one of the beams.
  • FIG. 2 shows with full lines the ramp during a lowering operation. Dash-dotted lines show the ramp in stowed position, in which it may be locked by means of suitable devices not shown.
  • the ramp is folded outwards by means of the wire 25 attached to winch 23 to the position shown in FIG. 2.
  • the outer track part 16 and flap 18 will hang downwards substantionally in a vertical position.
  • the outer part of the track is swung upwards by means of the winch 24, in such a manner that it will form an extension of the fixed inner part of the track.
  • the wire 26 from the winch 24 is led over a first pulley 27 at the end of the beam, and from that to a second pulley 28 back to the beam where it is attached.
  • the position of flap 18 will automatically adjust itself to the plane thereof.
  • An adjustment of the ends of the beams in relation to the brackets by means of the sliding members 21 is made during the upward folding of the outer track part.
  • the winch 23 is preferably of the same type as mooring winches of known design, and may be adjusted to maintain a constant strain in the wire 25, whereby this is paid out or wound home if the load is changed from a certain value. On the present occasion this load shall correspond to the weight of the ramp.
  • the ramp may be dimensioned in such a manner that it with ferry-boats will permit road trucks and other vehicles to drive into the ship, and the position of the ramp in relation to the longitudinal axis of the ship may of course be other than the one shown on the drawing.
  • a loading ramp pivotably connected to a ship and comprising two unitary side beams extending to a quay or other support and a travelling track carried thereby, in which the travelling track is composed of an inner part extending from the ship outwards along part of the length of the beams and is fixedly connected thereto, and an outer part hingedly connected to the inner part but free from the beams in such a manner that the outer part, when the ramp is swung to a vertical position, may.
  • the loading ramp according to claim 1 designed to be attached to a stern position of the ship with its pivot axis at an angle to the longitudinal axis of the ship, in which an end portion of the outer track part forming an elongation of the beams is broader than the distance between the beams at the ends thereof remote from the ship, and at least one of the beams, adjacent to the ship, being bent sidewards sufficient to permit the broadened portion of the outer track part to be brought in between the beams, when the ramp is raised to vertical position.
  • the loading ramp according to claim 1 in which at least two winches are used for operating the ramp, one of said winches being designed to raise and to lower the beam structure, and one winch to govern the outer track part, the first mentioned winch being further designed in a manner common with mooring winches to maintain a constant strain in the pertaining wire, which is sufficient to carry the weight of the ramp.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Ship Loading And Unloading (AREA)
  • Jib Cranes (AREA)
  • Seal Device For Vehicle (AREA)
US78860A 1969-11-11 1970-10-07 Ship{40 s loading ramp Expired - Lifetime US3687308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15428/69A SE342010B (es) 1969-11-11 1969-11-11

Publications (1)

Publication Number Publication Date
US3687308A true US3687308A (en) 1972-08-29

Family

ID=20300637

Family Applications (1)

Application Number Title Priority Date Filing Date
US78860A Expired - Lifetime US3687308A (en) 1969-11-11 1970-10-07 Ship{40 s loading ramp

Country Status (12)

Country Link
US (1) US3687308A (es)
JP (1) JPS5014793B1 (es)
BE (1) BE757884A (es)
DE (2) DE7035319U (es)
ES (1) ES385317A1 (es)
FI (1) FI49940C (es)
FR (1) FR2071787A5 (es)
GB (1) GB1271625A (es)
NL (1) NL159623B (es)
NO (1) NO128262B (es)
SE (1) SE342010B (es)
YU (1) YU32453B (es)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846860A (en) * 1972-06-28 1974-11-12 Mac Gregor Comarain Sa Movable access ramp for vehicles
US3871320A (en) * 1970-02-06 1975-03-18 Lund Mohr & Giaever Enger Apparatus for counteracting a tilting of a ships{3 s hull during loading and unloading
US3933256A (en) * 1973-05-07 1976-01-20 Navire Cargo Gear International Ab Ship's loading ramp
US3971090A (en) * 1975-08-11 1976-07-27 Sun Shipbuilding And Dry Dock Company Loading ramp securing system
WO2001042080A1 (en) * 1999-12-10 2001-06-14 Hamworthy Kse Ab Bearing for shipramps
US20060060128A1 (en) * 2004-09-23 2006-03-23 Lockheed Martin Corporation Apparatus comprising a ship-to-shore interface
WO2009148385A1 (en) * 2008-06-02 2009-12-10 Tts Ships Equipment Ab Device for a divided ship ramp
US20090304480A1 (en) * 2006-03-02 2009-12-10 Maffstack, Llc Large-Scale Watercraft Storage System
WO2013095243A1 (en) * 2011-12-22 2013-06-27 Cargotec Sweden Ab A ramp buttress and a ship ramp comprising such a ramp buttress
US20130219637A1 (en) * 2009-03-27 2013-08-29 Clay J. Goin Ramps, Pivot Devices and Biasing Structures
WO2015160299A1 (en) * 2014-04-15 2015-10-22 Tts Marine Ab Proceeding at a ramp for ships and a device for accomplish the told proceeding
US20160214701A1 (en) * 2015-01-28 2016-07-28 Airbus Helicopters Deutschland GmbH Aircraft with inwardly foldable rear door

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE400244B (sv) * 1972-07-24 1978-03-20 Mac Gregor International Sa Rorlig anordning bildande broramp mellan ett transportmedel, spec ett fartyg, och en plattform utanfor fartyget
JPS545918B2 (es) * 1974-01-31 1979-03-22
JPS5613200Y2 (es) * 1975-01-09 1981-03-26
US4043288A (en) * 1975-10-23 1977-08-23 Sun Shipbuilding And Dry Dock Co. Ship loading ramp
FR2409942A1 (fr) * 1977-11-23 1979-06-22 Mac Gregor International Sa Rampe de transfert de charges notamment entre un bateau et un quai de chargement ou de dechargement
DE19641454C1 (de) * 1996-10-09 1998-03-26 Haniel Baustoff Ind Zuschlagst Einrichtung zum Ladungsumschlag zwischen Land- und Wasserfahrzeugen, insbesondere zum Beladen von Binnenschiffen mit Schüttgut
DE19641455C1 (de) * 1996-10-09 1998-03-26 Haniel Baustoff Ind Zuschlagst Einrichtung zum Ladungsumschlag zwischen Land- und Wasserfahrzeugen, insbesondere zum Beladen von Binnenschiffen mit Schüttgut
SE535396C2 (sv) * 2008-02-19 2012-07-24 Cargotec Sweden Ab Lastramp för fartyg
RU2601487C1 (ru) * 2015-09-11 2016-11-10 Евгений Александрович Оленев Механизированная аппарель

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523723A (en) * 1946-12-06 1950-09-26 Boeing Co Cargo ramp
US2727781A (en) * 1953-06-03 1955-12-20 Eath Albert R D Tail gate ramp
US3380422A (en) * 1966-01-13 1968-04-30 Us Lines Inc Cargo vessel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE377334C (de) * 1923-06-16 Harry Thomson Landungsbruecke
DE1105444B (de) * 1959-07-03 1961-04-27 Beteiligungs & Patentverw Gmbh Einrichtung zum Einstellen eines gewuenschten Winkels zwischen zwei miteinander schwenkbar verbundenen Bauteilen, insbesondere zwischen Brueckenfahr-bahnteilen
US3411169A (en) * 1967-01-06 1968-11-19 Miami Beach Yacht Corp Cargo ramp assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523723A (en) * 1946-12-06 1950-09-26 Boeing Co Cargo ramp
US2727781A (en) * 1953-06-03 1955-12-20 Eath Albert R D Tail gate ramp
US3380422A (en) * 1966-01-13 1968-04-30 Us Lines Inc Cargo vessel

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871320A (en) * 1970-02-06 1975-03-18 Lund Mohr & Giaever Enger Apparatus for counteracting a tilting of a ships{3 s hull during loading and unloading
US3846860A (en) * 1972-06-28 1974-11-12 Mac Gregor Comarain Sa Movable access ramp for vehicles
US3933256A (en) * 1973-05-07 1976-01-20 Navire Cargo Gear International Ab Ship's loading ramp
US3971090A (en) * 1975-08-11 1976-07-27 Sun Shipbuilding And Dry Dock Company Loading ramp securing system
WO2001042080A1 (en) * 1999-12-10 2001-06-14 Hamworthy Kse Ab Bearing for shipramps
US20060060128A1 (en) * 2004-09-23 2006-03-23 Lockheed Martin Corporation Apparatus comprising a ship-to-shore interface
US7111579B2 (en) * 2004-09-23 2006-09-26 Lockheed Martin Corporation Apparatus comprising a ship-to-shore interface
US20090304480A1 (en) * 2006-03-02 2009-12-10 Maffstack, Llc Large-Scale Watercraft Storage System
US9789942B2 (en) * 2006-03-02 2017-10-17 Maff-Stack, Llc Large-scale watercraft storage system
WO2009148385A1 (en) * 2008-06-02 2009-12-10 Tts Ships Equipment Ab Device for a divided ship ramp
CN102046459A (zh) * 2008-06-02 2011-05-04 Tts海运公司 用于分段船舶坡道的装置
KR101304016B1 (ko) * 2008-06-02 2013-09-04 티티에스 마린 악티에볼라게트 분할식 선박 램프용 장치
CN102046459B (zh) * 2008-06-02 2014-10-22 Tts海运公司 用于分段船舶坡道的装置
US20130219637A1 (en) * 2009-03-27 2013-08-29 Clay J. Goin Ramps, Pivot Devices and Biasing Structures
US8832892B2 (en) * 2009-03-27 2014-09-16 Clay J. Goin Pivot devices for ramps
WO2013095243A1 (en) * 2011-12-22 2013-06-27 Cargotec Sweden Ab A ramp buttress and a ship ramp comprising such a ramp buttress
WO2015160299A1 (en) * 2014-04-15 2015-10-22 Tts Marine Ab Proceeding at a ramp for ships and a device for accomplish the told proceeding
US20160214701A1 (en) * 2015-01-28 2016-07-28 Airbus Helicopters Deutschland GmbH Aircraft with inwardly foldable rear door
US10005538B2 (en) * 2015-01-28 2018-06-26 Airbus Helicopters Deutschland GmbH Aircraft with inwardly foldable rear door

Also Published As

Publication number Publication date
GB1271625A (en) 1972-04-19
FI49940B (es) 1975-07-31
DE2046900B2 (de) 1977-12-01
YU275170A (en) 1974-04-30
DE7035319U (de) 1971-05-27
NL7015069A (es) 1971-05-13
YU32453B (en) 1974-10-31
ES385317A1 (es) 1973-04-16
FI49940C (fi) 1975-11-10
DE2046900C3 (de) 1983-12-15
NO128262B (es) 1973-10-22
JPS5014793B1 (es) 1975-05-30
DE2046900A1 (es) 1971-05-19
BE757884A (fr) 1971-04-22
NL159623B (nl) 1979-03-15
SE342010B (es) 1972-01-24
FR2071787A5 (es) 1971-09-17

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