EP1172325A3 - Control device for hydraulic drive winch - Google Patents

Control device for hydraulic drive winch Download PDF

Info

Publication number
EP1172325A3
EP1172325A3 EP01302982A EP01302982A EP1172325A3 EP 1172325 A3 EP1172325 A3 EP 1172325A3 EP 01302982 A EP01302982 A EP 01302982A EP 01302982 A EP01302982 A EP 01302982A EP 1172325 A3 EP1172325 A3 EP 1172325A3
Authority
EP
European Patent Office
Prior art keywords
port
control valve
free fall
winding
motor
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Withdrawn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
EP01302982A
Other languages
German (de)
French (fr)
Other versions
EP1172325A2 (en
Inventor
Yoshio Nabco Seishin Plant Nishimoto
Takahiro Okubo Plant Kobaysahi
Taisuke Okubo Plant Tsunoo
Etsujiro Kobe Corporate Research Labs. Imanishi
Satoshi Kobe Corporate Research Labs. Yonezawa
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.)
Kobelco Cranes Co Ltd
Original Assignee
Kobelco 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
Priority claimed from JP2000212746A external-priority patent/JP3893857B2/en
Priority claimed from JP2001025132A external-priority patent/JP3767389B2/en
Application filed by Kobelco Construction Machinery Co Ltd filed Critical Kobelco Construction Machinery Co Ltd
Publication of EP1172325A2 publication Critical patent/EP1172325A2/en
Publication of EP1172325A3 publication Critical patent/EP1172325A3/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Withdrawn legal-status Critical Current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
    • B66D1/02—Driving gear
    • B66D1/08—Driving gear incorporating fluid motors
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A winding-down side pilot port (5b) of a control valve (5) is of a 2-port construction comprising a normal winding-down side port (5b1) having a large pressure receiving area and a free fall side port (5b2) having a small pressure receiving area, wherein in the free fall operation carried out by setting a motor (2) to a small capacity, a pilot pressure of a winding-down side remote control valve (8) is supplied to the free fall side port through a mode switching valve (22). Thereby, a stroke of the control valve (5) can be suppressed so that a speed of a motor (2) does not exceed an allowable speed.
Additionally a load holding hydraulic system is disclosed with a hydraulic motor (101) and bidirectional pump (104) in closed circuit.
EP01302982A 2000-07-13 2001-03-29 Control device for hydraulic drive winch Withdrawn EP1172325A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000212746 2000-07-13
JP2000212746A JP3893857B2 (en) 1999-11-25 2000-07-13 Control device for hydraulic drive winch
JP2001025132 2001-02-01
JP2001025132A JP3767389B2 (en) 2001-02-01 2001-02-01 Hydraulic winch control device

Publications (2)

Publication Number Publication Date
EP1172325A2 EP1172325A2 (en) 2002-01-16
EP1172325A3 true EP1172325A3 (en) 2002-04-17

Family

ID=26595963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01302982A Withdrawn EP1172325A3 (en) 2000-07-13 2001-03-29 Control device for hydraulic drive winch

Country Status (1)

Country Link
EP (1) EP1172325A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2956105B1 (en) * 2010-02-10 2013-12-27 Payant Ets TRACTION DEVICE
CN103287999B (en) * 2013-06-18 2015-08-05 中联重科股份有限公司 Construction machinery and equipment and elevator variable amplitude hydraulic system, operational method
CN104632746B (en) 2015-03-04 2017-11-24 徐州重型机械有限公司 switching valve, switching hydraulic system and crane
CN106185662A (en) * 2016-07-18 2016-12-07 华中科技大学 A kind of hoisting hydraulic system being applicable to crawler crane
IT201700106781A1 (en) * 2017-09-25 2019-03-25 Manitou Italia Srl Device for feeding and for changing the displacement of a hydraulic motor.
CN107795538B (en) * 2017-12-01 2023-09-08 江苏徐工工程机械研究院有限公司 Walking motor gear shifting valve, walking motor and engineering machinery
CN112777503B (en) * 2021-02-23 2022-05-03 三一汽车起重机械有限公司 Winch device, hydraulic system thereof, use method and operation machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818802A (en) * 1972-04-27 1974-06-25 Us Navy Speed control mechanism
DE3441185A1 (en) * 1984-11-10 1986-05-22 Mannesmann Rexroth GmbH, 8770 Lohr Drive system
JPH07309590A (en) * 1994-05-16 1995-11-28 Ishikawajima Constr Mach Co Control circuit for winch
JPH1179679A (en) * 1997-09-08 1999-03-23 Kobe Steel Ltd Control method and device for hydraulic drive winch
US6079576A (en) * 1995-12-13 2000-06-27 Liebherr-Werk Ehingen Gmbh Control device for a hoist mechanism of a crane
DE19962648A1 (en) * 1998-12-25 2000-07-06 Kabelco Constrution Machinery Control process for hydraulically driven winch has control valve supplying and discharging oil to hydraulic motor whose performance is set to lower setting for free fall unwinding

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818802A (en) * 1972-04-27 1974-06-25 Us Navy Speed control mechanism
DE3441185A1 (en) * 1984-11-10 1986-05-22 Mannesmann Rexroth GmbH, 8770 Lohr Drive system
JPH07309590A (en) * 1994-05-16 1995-11-28 Ishikawajima Constr Mach Co Control circuit for winch
US6079576A (en) * 1995-12-13 2000-06-27 Liebherr-Werk Ehingen Gmbh Control device for a hoist mechanism of a crane
JPH1179679A (en) * 1997-09-08 1999-03-23 Kobe Steel Ltd Control method and device for hydraulic drive winch
DE19962648A1 (en) * 1998-12-25 2000-07-06 Kabelco Constrution Machinery Control process for hydraulically driven winch has control valve supplying and discharging oil to hydraulic motor whose performance is set to lower setting for free fall unwinding

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 03 29 March 1996 (1996-03-29) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 08 30 June 1999 (1999-06-30) *

Also Published As

Publication number Publication date
EP1172325A2 (en) 2002-01-16

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