US3871527A - Ram tensioning device - Google Patents

Ram tensioning device Download PDF

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Publication number
US3871527A
US3871527A US347980A US34798073A US3871527A US 3871527 A US3871527 A US 3871527A US 347980 A US347980 A US 347980A US 34798073 A US34798073 A US 34798073A US 3871527 A US3871527 A US 3871527A
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US
United States
Prior art keywords
housing
chamber
fluid
disposed
tensioning device
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 - Lifetime
Application number
US347980A
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English (en)
Inventor
Werner K Schimmeyer
Norman J Wood
Joseph V Mccargar
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US347980A priority Critical patent/US3871527A/en
Priority to DE2414181A priority patent/DE2414181A1/de
Priority to NL7404226A priority patent/NL7404226A/xx
Priority to GB1393074A priority patent/GB1413453A/en
Priority to FR7411656A priority patent/FR2224395B1/fr
Priority to ES424907A priority patent/ES424907A1/es
Priority to JP49037469A priority patent/JPS49135352A/ja
Priority to IT20680/74A priority patent/IT1009663B/it
Application granted granted Critical
Publication of US3871527A publication Critical patent/US3871527A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66C13/00—Other constructional features or details
    • B66C13/02—Devices for facilitating retrieval of floating objects, e.g. for recovering crafts from water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41572—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and an output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41581—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members

Definitions

  • ABSTRACT A ram tensioning device comprising a hydraulicpneumatic cylinder with a free piston disposed within the cylinder, 3 piston rod extending from one end of the cylinder the piston rod being acted upon by pneumatic fluid to provide shock absorbing tensioning for a hoist cable and being acted upon via the free piston by a hydraulic fluid to provide accurate positioning of the piston rod to assist in handling heavy variable loads which are ideally subjected to a constant tensional force in one mode of operation and firmly positioned in another mode of operation.
  • This invention relates to aerospace and marine applications wherein large amplitude vibrations occur and accurate positioning is required when lifting heavy loads with a deck crane.
  • This invention is applicable to a deck crane of a ship, wherein the crane is required to lift heavy loads from the water and the apparent weight of the object varies as the object emerges from the water due to the loss of buoyancy. It is also applicable where some type of tensioning device is necessary to take up or play out slack in the hoist line as the ship and hoist heave as a result of waves or swells.
  • a ram tensioning device when made in accordance with this invention, comprises a tubular housing, a first movable abutment slidably disposed within the housing, a second movable abutment slidably disposed within the housing and a rod extending from one of the abutments.
  • One end of the housing is closed forming a chamber between the closed end of the housing and the first movable abutment.
  • a second chamber is formed between the first and second movable abutment.
  • the rod tensioning device also comprises means for supplying pressurized gaseous fluid to one of said chambers and means for supplying pressurized hydraulic fluid to the other of said chambers at a pressure greater than the gaseous fluid being supplied to the other chamber.
  • FIG. 1 is a schematic diagram of a deck hoist mounted on a ship and the hoist has a ram tensioning device, made in accordance with this invention, disposed thereon;
  • FIG. 2 is a sectional view of the ram tensioning device
  • FIG. 3 is a flow diagram showing the control of the liquid and gaseous pressurized fluids being supplied to the ram tensioning device.
  • FIG. 1 shows a portion of a ship 1 having a deck crane 3 pivotally mounted thereon.
  • the deck crane 3 comprises a base 5, a hoist drum 7 rotatably disposed in the base 5, a motor or other driving means (not shown) connected to the hoist drum 7, and a boom 9 pivotally connected to the base by a pin 11.
  • a boom positioning drum 13 driven by a boom positioning motor or means is disposed on the upper portion of the base 5 and a positioning cable or line 15, preferably a wire rope, wraps around the positioning drum l3 and is fastened to the upper or free end of the boom 9 to raise and lower the boom as the positioning cable is wound and unwound from the positioning drum 13.
  • a twogroove head sheave 17 is rotatably disposed on the free end of the boom 9 and a ram tensioning device 19 is fastened to the boom in such a manner that one end is fixed thereto and the other end is free to move rectilinearly away from the head sheave 17.
  • a moving sheave 21 is rotatably disposed on the free or moving end of the ram tensioning device 19.
  • the ram tensioning device 19 comprises a tubular housing or cylinder 31, a first movable abutment or piston 33 slidably disposed within the tubular housing 31 and a second movable abutment, a floating or free piston 35, slidably disposed within the tubular housing 31.
  • a piston rod 37 fastened to and extends axially from the first piston 33.
  • the piston rod 37 has a cross sectional areasmaller than the first piston 33 forming an annular chamber 39 between the piston rod 37 and the tubular housing 31.
  • Sealing means comprising an O-ring 41 and a circumferential groove 43 are disposed adjacent one end of the tubular housing to form a sliding seal between the piston rod 37 and the tubular housing 31.
  • the other end of the housing is closed forming a chamber 45 between the closed end of the housing 31 and the free piston 35.
  • the free piston 35 and the piston 33 are so disposed within the housing 31 to form a chamber 47 therebetween.
  • the piston 33 has a plurality of openings 49 disposed therein forming means for allowing a controlled rate of fluid flow between the annular chamber 39 and the chamber 47.
  • a hydraulic fluid inlet port 51 is disposed in the closed end of the tubular housing 31 forming means for supplying pressurized hydraulic fluid to the chamber 45 disposed between the housing 31 and the piston 35.
  • a gas inlet port 53' is disposed adjacent the open end of the tubular housing 31 forming means for supplying pressurized gaseous fluid to the annular chamber 39.
  • the pressure which can be delivered by the hydraulic fluid is substantially higher than the pressure which can be developed by the gaseous or pneumatic fluid, allowing the hydraulic fluid to override the pneumatic fluid.
  • FIG. 3 shows a flow diagram of the control of the fluids utilized to operate the ram tensioning device 19, in which a reservoir 61 containing hydraulic fluid is fluidly connected to the hydraulic supply port 51 via a conduit 63.
  • a hydraulic pump 65 is disposed in the conduit 63 and is adapted to take its suction from the reservoir 61 and to discharge into the conduit 63, to supply pressurized hydraulic fluid to the chamber 45.
  • a hydraulic control valve 67 is disposed in the conduit 63 between the pump 65 and the chamber 45 to control the flow of hydraulic fluid being supplied to the chamber 45.
  • a pressure relief valve 69 is disposed in fluid communication with the conduit 63 between the pump 65 and the control valve 67.
  • the pressure relief valve 69 is also in fluid communication with the reservoir 61.
  • the pressure relief valve 69 limits the pressure in the conduit 63 to a predetermined level by relieving the pressure into the reservoir when it exceeds the predetermined level.
  • a cylinder ofpressurized gas 71 is fluidly connected to the gas inlet port 53 via a conduit 73.
  • a pressure regulator 75 is disposed in the conduit 73 adjacent the cylinder of pressurized gas.
  • One branch 79 of the cross 78 is in fluid communication with a vent valve 81, while the other branch 83 of the cross 78 is in fluid communication with an accumulator or expansion chamber 85.
  • An isolation valve 87 is disposed in the branch 83 between the cross 78 and the expansion chamber 85.
  • the pressure regulating valve 75 is adjusted to some predetermined pressure depending on the load or weight to be lifted.
  • the shut-off valve 77 and isolation valve 87 are open and the vent valve 81 is closed allowing the pressurized gaseous fluid from the cylinder 71 to fill the expansion chamber 85 and the chambers 39 and 47 in the ram tensioning device.
  • the pressurized gaseous fluid in the chambers 39 and 47 react on the piston 34 to extend the piston rod a predetermined amount depending on the weight or load 25 being lifted as the drum 7 takes up the cable 23 to lift the load 25.
  • the gaseous fluid absorbs shock and moves the piston rod 37 in and out to take up slack or pay out line as the ship pitches or rolls in order to generally keep a constant tension on the hoist line 23.
  • the expansion chamber 85 can be put in and taken out of service to drastically change the volume of the gaseous fluid in the system, thus changing the response of the tensioning system. Changing the set pressure by adjusting the pressure regulating valve 75 will also change the response of the tensioning system.
  • the ram tensioning device 19, hereinbefore described advantageously provides tensioning of the hoist line 23 taking up slack and paying out hoist line so that there is generally a constant force being applied to lift the weight 25 even though the ship 1 and deck crane 3 are subjected to a heaving motion due to swells or waves.
  • the spring constant or response of the pneumatic portion of the tensioning system can be easily changed to accommodate various loads by changing either the set pneumatic pressure or by varying the volume as hereinbefore described.
  • the hydraulic portion of the tensioning device produces a high lifting capacity with precision and speed not available with comparably priced motor driven hoists.
  • a ram tensioning device also advantageously allows the utilization of a hoist drive system, wherein the hoist drive can be sized for raising and lowering the weight or load in the water, where the speed is low and the load is reduced by the buoyancy of the water, and a hydraulic system for lifting heavy loads a short distance at a high rate of speed resulting in considerable savings in hoist drive costs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Jib Cranes (AREA)
  • Actuator (AREA)
US347980A 1973-04-04 1973-04-04 Ram tensioning device Expired - Lifetime US3871527A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US347980A US3871527A (en) 1973-04-04 1973-04-04 Ram tensioning device
DE2414181A DE2414181A1 (de) 1973-04-04 1974-03-23 Vorrichtung zur hubseilzugsteuerung bei kraenen
NL7404226A NL7404226A (es) 1973-04-04 1974-03-28
GB1393074A GB1413453A (en) 1973-04-04 1974-03-29 Hoist with cable tensioning device
FR7411656A FR2224395B1 (es) 1973-04-04 1974-04-02
ES424907A ES424907A1 (es) 1973-04-04 1974-04-03 Un aparato de elevacion.
JP49037469A JPS49135352A (es) 1973-04-04 1974-04-04
IT20680/74A IT1009663B (it) 1973-04-04 1974-04-08 Dispositivo tenditore a pistoni

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US347980A US3871527A (en) 1973-04-04 1973-04-04 Ram tensioning device

Publications (1)

Publication Number Publication Date
US3871527A true US3871527A (en) 1975-03-18

Family

ID=23366144

Family Applications (1)

Application Number Title Priority Date Filing Date
US347980A Expired - Lifetime US3871527A (en) 1973-04-04 1973-04-04 Ram tensioning device

Country Status (8)

Country Link
US (1) US3871527A (es)
JP (1) JPS49135352A (es)
DE (1) DE2414181A1 (es)
ES (1) ES424907A1 (es)
FR (1) FR2224395B1 (es)
GB (1) GB1413453A (es)
IT (1) IT1009663B (es)
NL (1) NL7404226A (es)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005780A (en) * 1975-11-10 1977-02-01 The Manitowoc Company, Inc. Boom stop and back hitch compensating system
US4021019A (en) * 1975-03-24 1977-05-03 British Columbia Research Council Heave compensating cranes
US4025055A (en) * 1974-07-30 1977-05-24 Strolenberg Willem Josef Georg Apparatus for use in raising or lowering a load in a condition of relative motion
US4050359A (en) * 1975-09-04 1977-09-27 Brunswick Corporation Hydraulic power trim and power tilt system supply
US4145959A (en) * 1977-02-23 1979-03-27 Teledyne Mccormick Selph, An Operating Division Of Teledyne Industries, Inc. Constant speed actuator
US4155538A (en) * 1977-05-09 1979-05-22 Hydraudyne B.V. Device for lowering a load, for example a diving bell from a vessel from a spot above the water level to a spot beneath the water level
US4179233A (en) * 1977-07-14 1979-12-18 National Advanced Drilling Machines, Inc. Vertical motion compensated crane apparatus
US4268013A (en) * 1978-06-12 1981-05-19 Nl Industries, Inc. Crane motion compensator
US4354608A (en) * 1979-06-08 1982-10-19 Continental Emsco Company Motion compensator and control system for crane
US4494631A (en) * 1982-09-27 1985-01-22 Sloan Valve Company Combination air cylinder and hydraulic slack adjuster
US4516473A (en) * 1981-05-07 1985-05-14 Shokestu Kinzoku Kogyo Kabushiki Kaisha Cylinder driving system
US4850571A (en) * 1988-04-11 1989-07-25 United States Of America Connector assembly
US5140894A (en) * 1991-01-16 1992-08-25 Axelson, Inc. Gas spring actuator
US5965994A (en) * 1997-06-20 1999-10-12 Seo; Dong Il Automatic vertical moving systems and control methods therefor
US20060124571A1 (en) * 2003-07-03 2006-06-15 Joop Roodenburg Hoisting mechanism
US20060151768A1 (en) * 2002-03-06 2006-07-13 Bursaux Gabriel A Method and apparatus for deploying articles in deep waters
US7389973B1 (en) * 2007-02-15 2008-06-24 Samson Rope Technologies Tensioning systems and methods for line spooling
US20100104372A1 (en) * 2007-03-16 2010-04-29 Lewis Limited Wireline intervention system
US20140021421A1 (en) * 2011-04-04 2014-01-23 Rolls-Royce Marine As Tensioning device
US8770272B2 (en) 2011-05-18 2014-07-08 Halliburton Energy Services, Inc. Managing tensile forces in a cable
US20140305361A1 (en) * 2013-04-11 2014-10-16 Terje W. Eilertsen Compensated lashing of tender assist drilling unit to a floating production facility
CN109399456A (zh) * 2017-08-18 2019-03-01 天海融合防务装备技术股份有限公司 具有吊绳运动感应机构的起重设备及其起吊控制方法
US20190092610A1 (en) * 2017-09-25 2019-03-28 Wt Industries, Llc Heave compensation system
US11161570B1 (en) * 2018-08-14 2021-11-02 Guangzhou Bureau, Csg Ehv Power Transmission Company Cable-direction-adaptive ROV winch applied to non-dynamic-positioning-equipped motherships

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2748674A1 (de) * 1977-10-29 1979-05-10 Hydraulik Brattvaag As Verfahren und einrichtung zur ueberstellung von frachtgut zwischen einem hochseeladeplatz und einem schiff
FR2494244A1 (fr) * 1980-11-17 1982-05-21 Bretagne Atel Chantiers Dispositif pour l'enlevement et la depose d'une charge au moyen d'une grue entre deux supports animes de mouvements relatifs verticaux
FR2496624A1 (fr) * 1980-12-23 1982-06-25 Bretagne Atel Chantiers Dispositif pour amortir les chocs entre une charge et un support flottant au moment de l'enlevement de la charge
DE3430085A1 (de) * 1984-08-16 1986-02-27 PHB Weserhütte AG, 5000 Köln In das lastseil von hebezeugen einsetzbares plastisch-elastisches verschiebegelenk
US4688764A (en) * 1984-10-31 1987-08-25 Nl Industries, Inc. Crown block compensator

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US2897907A (en) * 1955-08-31 1959-08-04 Jersey Prod Res Co Weight handling mechanism
US3265218A (en) * 1963-02-07 1966-08-09 Giovannetti Macchine S P A Side boom pipe layer
US3311351A (en) * 1966-02-02 1967-03-28 William W Blakely Shock absorbing device
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Cited By (30)

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US4025055A (en) * 1974-07-30 1977-05-24 Strolenberg Willem Josef Georg Apparatus for use in raising or lowering a load in a condition of relative motion
US4021019A (en) * 1975-03-24 1977-05-03 British Columbia Research Council Heave compensating cranes
US4050359A (en) * 1975-09-04 1977-09-27 Brunswick Corporation Hydraulic power trim and power tilt system supply
US4005780A (en) * 1975-11-10 1977-02-01 The Manitowoc Company, Inc. Boom stop and back hitch compensating system
US4145959A (en) * 1977-02-23 1979-03-27 Teledyne Mccormick Selph, An Operating Division Of Teledyne Industries, Inc. Constant speed actuator
US4155538A (en) * 1977-05-09 1979-05-22 Hydraudyne B.V. Device for lowering a load, for example a diving bell from a vessel from a spot above the water level to a spot beneath the water level
US4179233A (en) * 1977-07-14 1979-12-18 National Advanced Drilling Machines, Inc. Vertical motion compensated crane apparatus
US4268013A (en) * 1978-06-12 1981-05-19 Nl Industries, Inc. Crane motion compensator
US4354608A (en) * 1979-06-08 1982-10-19 Continental Emsco Company Motion compensator and control system for crane
US4516473A (en) * 1981-05-07 1985-05-14 Shokestu Kinzoku Kogyo Kabushiki Kaisha Cylinder driving system
US4494631A (en) * 1982-09-27 1985-01-22 Sloan Valve Company Combination air cylinder and hydraulic slack adjuster
US4850571A (en) * 1988-04-11 1989-07-25 United States Of America Connector assembly
US5140894A (en) * 1991-01-16 1992-08-25 Axelson, Inc. Gas spring actuator
US5965994A (en) * 1997-06-20 1999-10-12 Seo; Dong Il Automatic vertical moving systems and control methods therefor
US20060151768A1 (en) * 2002-03-06 2006-07-13 Bursaux Gabriel A Method and apparatus for deploying articles in deep waters
US20060124571A1 (en) * 2003-07-03 2006-06-15 Joop Roodenburg Hoisting mechanism
US7389889B2 (en) 2003-07-03 2008-06-24 Itrec B.V. Hoisting mechanism
US7389973B1 (en) * 2007-02-15 2008-06-24 Samson Rope Technologies Tensioning systems and methods for line spooling
NO340444B1 (no) * 2007-03-16 2017-04-24 Ocean Riser Systems As Vaier intervensjonssystem
US20100104372A1 (en) * 2007-03-16 2010-04-29 Lewis Limited Wireline intervention system
US8678352B2 (en) * 2007-03-16 2014-03-25 Ocean Riser System As Wireline intervention system
US20140021421A1 (en) * 2011-04-04 2014-01-23 Rolls-Royce Marine As Tensioning device
US8770272B2 (en) 2011-05-18 2014-07-08 Halliburton Energy Services, Inc. Managing tensile forces in a cable
US20140305361A1 (en) * 2013-04-11 2014-10-16 Terje W. Eilertsen Compensated lashing of tender assist drilling unit to a floating production facility
US9174705B2 (en) * 2013-04-11 2015-11-03 Terje W. Eilertsen Compensated lashing of tender assist drilling unit to a floating production facility
CN109399456A (zh) * 2017-08-18 2019-03-01 天海融合防务装备技术股份有限公司 具有吊绳运动感应机构的起重设备及其起吊控制方法
CN109399456B (zh) * 2017-08-18 2020-05-19 天海融合防务装备技术股份有限公司 具有吊绳运动感应机构的起重设备及其起吊控制方法
US20190092610A1 (en) * 2017-09-25 2019-03-28 Wt Industries, Llc Heave compensation system
US10669137B2 (en) * 2017-09-25 2020-06-02 Wt Industries, Llc Heave compensation system
US11161570B1 (en) * 2018-08-14 2021-11-02 Guangzhou Bureau, Csg Ehv Power Transmission Company Cable-direction-adaptive ROV winch applied to non-dynamic-positioning-equipped motherships

Also Published As

Publication number Publication date
ES424907A1 (es) 1976-06-01
JPS49135352A (es) 1974-12-26
IT1009663B (it) 1976-12-20
DE2414181A1 (de) 1974-10-24
FR2224395A1 (es) 1974-10-31
FR2224395B1 (es) 1978-01-13
GB1413453A (en) 1975-11-12
NL7404226A (es) 1974-10-08

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