GB1118048A - Transloader - Google Patents

Transloader

Info

Publication number
GB1118048A
GB1118048A GB475567A GB475567A GB1118048A GB 1118048 A GB1118048 A GB 1118048A GB 475567 A GB475567 A GB 475567A GB 475567 A GB475567 A GB 475567A GB 1118048 A GB1118048 A GB 1118048A
Authority
GB
United Kingdom
Prior art keywords
ship
cable
sheaves
amplifier
signal
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.)
Expired
Application number
GB475567A
Inventor
Homme John Worsley Prud
James Russell Robertson
Richard Clarence Fisher
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.)
Rucker Co
Original Assignee
Rucker Co
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 Rucker Co filed Critical Rucker Co
Priority to GB475567A priority Critical patent/GB1118048A/en
Publication of GB1118048A publication Critical patent/GB1118048A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/02—Devices for facilitating retrieval of floating objects, e.g. for recovering crafts from water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0108—Winches, capstans or pivots with devices for paying out or automatically tightening the cable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ship Loading And Unloading (AREA)

Abstract

1,118,048. Electric correspondence control systems. RUCKER CO. Jan. 31, 1967, No.4755/67. Heading G1N. [Also in Divisions B8 and G3] Apparatus for loading and unloading cargo in a ship by means of a cable and a winch includes means for changing the length of the cable in correspondence with the vertical movements of the ship relative to the pier on which the winch is mounted. The cable 12 (Fig. 1) passes over a fixed sheave block 21 carrying one set of sheaves 22 fixed to the block and a second set of sheaves 24 movable vertically by a piston 25, controlled hydraulically by a valve 32. The latter is provided with an electrical actuator 41 energized by amplifier 44 and driver 47. The amplifier is fed with a first signal from a position transducer 42 e.g. a potentiometer, representing the height of movable sheaves 24 and therefore the length of cable 12, and a second signal representing the relative positions of the ship 7 and the pier 9, derived from a tachogenerator 51 coupled to an auxiliary line 54 attached to the ship 7, whose output signal represents the speed of movement of the ship and is integrated at 62 to obtain a displacement signal. The difference between the two inputs to amplifier 44 controls valve 32 and hence the vertical position of the movable sheaves 24, and therefore maintains the height of the cargo 19 above the ship 7 at a desired value irrespective of the vertical movements of the ship in the water.
GB475567A 1967-01-31 1967-01-31 Transloader Expired GB1118048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB475567A GB1118048A (en) 1967-01-31 1967-01-31 Transloader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB475567A GB1118048A (en) 1967-01-31 1967-01-31 Transloader

Publications (1)

Publication Number Publication Date
GB1118048A true GB1118048A (en) 1968-06-26

Family

ID=9783169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB475567A Expired GB1118048A (en) 1967-01-31 1967-01-31 Transloader

Country Status (1)

Country Link
GB (1) GB1118048A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397360A1 (en) * 1977-07-14 1979-02-09 Automatic Drilling Mach VERTICAL MOVEMENT COMPENSATOR, MOUNTED ON A HOOK
US4179233A (en) * 1977-07-14 1979-12-18 National Advanced Drilling Machines, Inc. Vertical motion compensated crane apparatus
FR2428608A1 (en) * 1978-06-12 1980-01-11 Nl Industries Inc MOTION COMPENSATION METHOD AND DEVICE
FR2446215A1 (en) * 1979-01-11 1980-08-08 Thome Paul Telescopic pivoted unloading gantry - operates between two ships with coupling cable carrying inclinometer
WO1981001402A1 (en) * 1979-11-17 1981-05-28 Caley Hydraulics Ltd Heave compensator
GB2175270A (en) * 1985-05-07 1986-11-26 Rexroth Mannesmann Gmbh Sea motion following means
FR2663918A1 (en) * 1990-06-29 1992-01-03 Rabaud Sa Improvement to lifting devices using a winch and curbstone laying machine equipped with such a device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397360A1 (en) * 1977-07-14 1979-02-09 Automatic Drilling Mach VERTICAL MOVEMENT COMPENSATOR, MOUNTED ON A HOOK
US4179233A (en) * 1977-07-14 1979-12-18 National Advanced Drilling Machines, Inc. Vertical motion compensated crane apparatus
FR2428608A1 (en) * 1978-06-12 1980-01-11 Nl Industries Inc MOTION COMPENSATION METHOD AND DEVICE
FR2446215A1 (en) * 1979-01-11 1980-08-08 Thome Paul Telescopic pivoted unloading gantry - operates between two ships with coupling cable carrying inclinometer
WO1981001402A1 (en) * 1979-11-17 1981-05-28 Caley Hydraulics Ltd Heave compensator
GB2175270A (en) * 1985-05-07 1986-11-26 Rexroth Mannesmann Gmbh Sea motion following means
FR2663918A1 (en) * 1990-06-29 1992-01-03 Rabaud Sa Improvement to lifting devices using a winch and curbstone laying machine equipped with such a device

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