EP0748760A3 - Winch operating device - Google Patents

Winch operating device Download PDF

Info

Publication number
EP0748760A3
EP0748760A3 EP96201673A EP96201673A EP0748760A3 EP 0748760 A3 EP0748760 A3 EP 0748760A3 EP 96201673 A EP96201673 A EP 96201673A EP 96201673 A EP96201673 A EP 96201673A EP 0748760 A3 EP0748760 A3 EP 0748760A3
Authority
EP
European Patent Office
Prior art keywords
mode
free fall
operating device
winch drum
winch
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.)
Withdrawn
Application number
EP96201673A
Other languages
German (de)
French (fr)
Other versions
EP0748760A2 (en
Inventor
Kazuhisa Ishida
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of EP0748760A2 publication Critical patent/EP0748760A2/en
Publication of EP0748760A3 publication Critical patent/EP0748760A3/en
Withdrawn legal-status Critical Current

Links

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
    • B66D1/42—Control devices non-automatic
    • B66D1/44—Control devices non-automatic pneumatic of hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads

Abstract

The winch operating device according to the present invention is provided with a retaining means 7, 23 which, when a mode is shifted over by operation of a mode selection member 20a from a first mode in which free fall of a winch drum is not possible to a second mode in which free fall of said winch drum is possible, retains the state in which free fall of said winch drum is not possible until a verification operation other than the operation of selecting said second mode is performed in the state in which a brake pedal 11 is being operated. By doing this, free fall against the desire of the operator is positively prevented.
EP96201673A 1995-06-16 1996-06-14 Winch operating device Withdrawn EP0748760A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP150381/95 1995-06-16
JP7150381A JPH092785A (en) 1995-06-16 1995-06-16 Operating device for winch

Publications (2)

Publication Number Publication Date
EP0748760A2 EP0748760A2 (en) 1996-12-18
EP0748760A3 true EP0748760A3 (en) 1998-03-04

Family

ID=15495761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96201673A Withdrawn EP0748760A3 (en) 1995-06-16 1996-06-14 Winch operating device

Country Status (3)

Country Link
EP (1) EP0748760A3 (en)
JP (1) JPH092785A (en)
KR (1) KR100191674B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2024266B1 (en) * 2006-05-09 2011-01-12 Navalimpianti S.P.A. Auto-controlled winch for handling loads on ships, crafts, boats, pontoons, platforms and similar in particular for lifeboats or other loads
JP6645937B2 (en) * 2016-09-13 2020-02-14 住友重機械建機クレーン株式会社 Winch brake device
SI25547B (en) * 2017-11-10 2022-01-31 Tajfun Planina Proizvodnja Strojev, D.O.O. Hydraulic control for steering the winding drum with a clutch and brake in the forestry winch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475745A (en) * 1977-11-28 1979-06-16 Hitachi Constr Mach Co Ltd Device for preventing lifted article from hydraulic winch from dropping
US4398698A (en) * 1981-05-29 1983-08-16 Fmc Corporation Freefall winch system and method of operation
US4447044A (en) * 1980-05-26 1984-05-08 Kabushiki Kaisha Komatsu Seisakusho Clutching and braking control for hydraulically driven crane winches
US4549640A (en) * 1982-01-28 1985-10-29 Hitachi Construction Machinery Co., Ltd. Operation system for hoisting device
JPH01145997A (en) * 1987-11-30 1989-06-07 Kobe Steel Ltd Operating device for hydraulic drive winch
JPH0664896A (en) * 1992-08-14 1994-03-08 Hitachi Constr Mach Co Ltd Control device for winch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475745A (en) * 1977-11-28 1979-06-16 Hitachi Constr Mach Co Ltd Device for preventing lifted article from hydraulic winch from dropping
US4447044A (en) * 1980-05-26 1984-05-08 Kabushiki Kaisha Komatsu Seisakusho Clutching and braking control for hydraulically driven crane winches
US4398698A (en) * 1981-05-29 1983-08-16 Fmc Corporation Freefall winch system and method of operation
US4549640A (en) * 1982-01-28 1985-10-29 Hitachi Construction Machinery Co., Ltd. Operation system for hoisting device
JPH01145997A (en) * 1987-11-30 1989-06-07 Kobe Steel Ltd Operating device for hydraulic drive winch
JPH0664896A (en) * 1992-08-14 1994-03-08 Hitachi Constr Mach Co Ltd Control device for winch

Also Published As

Publication number Publication date
JPH092785A (en) 1997-01-07
EP0748760A2 (en) 1996-12-18
KR100191674B1 (en) 1999-06-15
KR970001203A (en) 1997-01-21

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