Classifications

• • 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
  • B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
  • A01K73/00—Drawn nets
  • A01K73/02—Trawling nets
  • A01K73/06—Hauling devices for the headlines
• • 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
  • B66D1/02—Driving gear
  • B66D1/14—Power transmissions between power sources and drums or barrels
  • B66D1/22—Planetary or differential gearings, i.e. with planet gears having movable axes of rotation
• • 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
  • B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels

Definitions

• the invention relates to a trawl winch for fishing vessels and of the kind described in the introduction to claim 1, preferably, but not exclusively, for stern trawlers.
• the energy requirement for control ⁇ ling the trawl winch is considerable and amounts by fishing for 20 hours per day to 19 litres of fuel oil per 100 h.p. of the vessel's propelling machinery.
• a stern trawler with 700 h.p. propel- ling machinery uses 133 litres of oil per day. Even if this does not sound of much, it will nevertheless exceed an amount of 100,000.- Dkr. by 300 fishing days in a year given fuel costs of 3 Dkr. per litre.
• the object of the invention is to provide a trawl winch which may in the usual manner be used for let ⁇ ting out and hauling in trawls but which will use no energy during the trawling while always ensuring an equal pull in the trawl cables.
• the hauling in of the trawl with the winch according to the invention is performed by activating a dif- ferential lock so that the drive engive will transmit the same moment to the two drums. In this way it is possible to let out and haul in the trawl in the usu ⁇ al manner.
• the blocking means may be designed so as to be manoeuvrable electrically, hydraulically or mechani ⁇ cally, for example in such a manner that it may be activated from the wheel house.
• the blocking means may also be executed in a quite simple manner, parti ⁇ cularly for small vessels, so that it merely consists of a manually operated arm which blocks the power in ⁇ put device of the differential.
• Claim 3 discloses a particularly advantageous embodi ⁇ ment of a very compact design of the trawl winch ac- cording to the invention.
• Claims 4 and 5 disclose practical and reliable de ⁇ signs of the differential. It is essential that a trawl winch is stongly and reliably structured so that it may stand the tough working environment on the sea.
• Fig. 1 schematically shows the principal structure and function of the invention
• Fig. 2 shows an example of a mechanical embodiment of the trawl winch according to the inven ⁇ tion.
• Fig. 1 of the drawing the stern of a vessel is shown schematically and is designated 1.
• a trawl winch with two cable drums 5 and 6 which through a differential 4 are pul ⁇ led by a common drive engine or motor 3 which may be any type of engine or motor, such as an electric mo ⁇ tor, a hydraulic engine or a combustin engine.
• a common drive engine or motor 3 which may be any type of engine or motor, such as an electric mo ⁇ tor, a hydraulic engine or a combustin engine.
• the trawl cables 8 and 9 extend through each its block 7 to the trawl 2 which in the usual manner is manoeuvered by two otter boards 10.
• Fig. 2 shows an example of a trawl winch with a me ⁇ chanical gear differential between the two drums.
• the drive engine 3 with drive gear (driving pinion) 14 is in mesh with the power input device 15 (crown wheel).
• the blocking means may for example be a mechanical blocking means 19 engaging the drive gear 14 or the power input device 15. It is also possible to perform the blocking by locking the drive engine 3.
• the cable drums 5 and 6 for the trawl cables 8 and 9 are arranged on a common shaft 12, 12' on either side of a gear differential 4 in that the drums 5 and 6 on the sides facing the differential are provided with a ring gear 17 operating as drum drives.
• Said drum drives 17 are in mesh with differential pinion gears 16 arranged on a retaining shaft 18 secured to the power input device 15 forming the crown wheel of the differential.
• the crown wheel 15 is a circular ring gear welded to the retaining shaft 18 and is designed with a circular ring gear with external teeth.
• the centre axis of the crown wheel 15 is common with that of the shaft 12 and the retaining shaft is at right angles to the main shaft 12.
• the main shaft 12, 12' is embedded in bearing pedes ⁇ tals 11 in the usual manner in that said bearing pedestals 11 are secured to the deck of the vessel.
• the two drums 5 and 6 are secured to the shaft 12 by solid bearings 13.
• the differential operates in the usual manner and for clearness the differential lock is not shown.
• the differential lock may moreover be designed in a generally known manner and such that it may either be manually operated or operated from the wheel house.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Environmental Sciences (AREA)
• Animal Husbandry (AREA)
• Biodiversity & Conservation Biology (AREA)
• Motor Power Transmission Devices (AREA)
• Transmission Devices (AREA)
• Fish Paste Products (AREA)

Priority Applications (5)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8127031

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (3)

Citations (5)

• 1985
  • 1985-08-22 DK DK381285A patent/DK153621C/da not_active IP Right Cessation
• 1987
  • 1987-02-19 DE DE8787901407T patent/DE3776658D1/de not_active Expired - Lifetime
  • 1987-02-19 WO PCT/DK1987/000016 patent/WO1988005999A1/en active IP Right Grant
  • 1987-02-19 EP EP87901407A patent/EP0303596B1/en not_active Expired - Lifetime
  • 1987-02-19 JP JP62501700A patent/JPH01502156A/ja active Pending
• 1988
  • 1988-10-11 NO NO88884518A patent/NO884518L/no unknown

Patent Citations (5)

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