EP1099859B1 - Verfahren zum Druckausgleich in Hydraulikmotoren zum Antrieb der Hub- und Schliessseile eines Seilkranes - Google Patents

Verfahren zum Druckausgleich in Hydraulikmotoren zum Antrieb der Hub- und Schliessseile eines Seilkranes Download PDF

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Publication number
EP1099859B1
EP1099859B1 EP00250337A EP00250337A EP1099859B1 EP 1099859 B1 EP1099859 B1 EP 1099859B1 EP 00250337 A EP00250337 A EP 00250337A EP 00250337 A EP00250337 A EP 00250337A EP 1099859 B1 EP1099859 B1 EP 1099859B1
Authority
EP
European Patent Office
Prior art keywords
pressure
hydraulic motor
gripper
closing
cables
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
EP00250337A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1099859A3 (de
EP1099859A2 (de
Inventor
Andreas Dipl.-Ing. Kruschinski
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.)
Demag Cranes and Components GmbH
Original Assignee
Gottwald Port Technology GmbH
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 Gottwald Port Technology GmbH filed Critical Gottwald Port Technology GmbH
Publication of EP1099859A2 publication Critical patent/EP1099859A2/de
Publication of EP1099859A3 publication Critical patent/EP1099859A3/de
Application granted granted Critical
Publication of EP1099859B1 publication Critical patent/EP1099859B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/12—Grabs actuated by two or more ropes
    • B66C3/125—Devices for 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/047—Preventing foaming, churning or cavitation

Definitions

  • the invention relates to a method for pressure equalization in the Reversible hydraulic motors for driving the lifting and closing cables of a Cable crane with a gripper for receiving bulk material, the preferred two hoisting ropes associated hydraulic motor and the two preferably Lock cables associated hydraulic motor in each case via pressure lines with a common pressure medium source is connected.
  • Such a cable crane is, for example, from US 3,776,513 known.
  • grippers are used in the present case, i. Conveying vessels that penetrate into the conveyed, take it and record and over the discharge point can empty again.
  • the grippers consist of a common Traverse hinged blades, which are opened on the conveyed material become. Due to the weight of the gripper, the blades penetrate when closing the conveyed goods and fill up.
  • different types of grippers Depending on the way how closing the Shoveling is performed, different types of grippers.
  • the present invention is concerned with two Seilgreifem, in which two from each other independent ropes or pairs of cables cause the movement of the blades. If pairs of cables are used, this is also called a four-rope grab.
  • This type of gripper requires a special gripper winch with two drums, the be driven mainly by reversible hydraulic motors.
  • Two- or four-line grapples are operated with the two ropes or rope pairs.
  • a slack closing rope on the material to be gripped; by tightening the closing rope are on the kinematics of the gripper the Shovels closed.
  • the gripper is raised with further tightening the strikers, wherein the tether must be tightened.
  • they are Locking cables very tight due to the closing process. This results in very large Pressure differences in the working groups of the two hydraulic motors used for the hoisting cable or hoisting cable pair and the closing cable or pair of strikers.
  • Object of the present invention is, starting from the described Problems and disadvantages, a method and a device for pressure compensation in the reversible hydraulic motors for driving the lifting and closing cables of a To create cable cranes of the generic type with which by cavitation resulting damage to the hydraulic motors is safely avoided.
  • 1 denotes the controllable pump
  • 2 denotes a control block for pressure-independent proportional control of several consumers
  • 3 is a control over which the hydraulic motors 4 and 5 and the control block 2 can be controlled.
  • the hydraulic motors 4 and 5, of which the hoist rope associated hydraulic motor with HW and the Locking cable associated hydraulic motor 5 is designated SW, are via a pressure equalization line connected to each other, in which the sw / ws valves 8 and 9 used are the pressure equalization with the gripper closed or when lifting and Switch on lowering of general cargo.
  • the inventive detection of the working pressures in the hydraulic motors 4 and 5 takes place via the sensors 6 and 7, which are respectively assigned to the hydraulic motors 4 and 5 are. These sensors 6 and 7 transmit proportional signals to the working pressures the controller 3, then the hydraulic motors 4 and 5 and the control block 2 so controls that at the end of the closing operation of the gripper in the hydraulic motors Set 4 and 5 equal working pressures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Control And Safety Of Cranes (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP00250337A 1999-11-11 2000-10-17 Verfahren zum Druckausgleich in Hydraulikmotoren zum Antrieb der Hub- und Schliessseile eines Seilkranes Expired - Lifetime EP1099859B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19955750A DE19955750B4 (de) 1999-11-11 1999-11-11 Verfahren zum Druckausgleich in Hydraulikmotoren zum Antrieb der Hub- und Schließseile eines Seilkranes
DE19955750 1999-11-11

Publications (3)

Publication Number Publication Date
EP1099859A2 EP1099859A2 (de) 2001-05-16
EP1099859A3 EP1099859A3 (de) 2003-11-12
EP1099859B1 true EP1099859B1 (de) 2005-05-18

Family

ID=7929656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00250337A Expired - Lifetime EP1099859B1 (de) 1999-11-11 2000-10-17 Verfahren zum Druckausgleich in Hydraulikmotoren zum Antrieb der Hub- und Schliessseile eines Seilkranes

Country Status (7)

Country Link
US (1) US6619626B1 (es)
EP (1) EP1099859B1 (es)
AT (1) ATE295943T1 (es)
DE (2) DE19955750B4 (es)
DK (1) DK1099859T3 (es)
ES (1) ES2243198T3 (es)
PT (1) PT1099859E (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011054316B4 (de) 2011-10-07 2021-04-01 Te Connectivity Germany Gmbh Zweiteiliges Crimpkontaktelement
CN104214150B (zh) * 2014-06-04 2016-03-23 上海中联重科桩工机械有限公司 双卷扬液压控制系统及具有其的工程机械
DE102014110060A1 (de) 2014-07-17 2016-01-21 Terex Mhps Gmbh Füllgradsteuerung für einen Schüttgut-Greifer eines Krans
DE102022123785A1 (de) 2022-09-16 2024-03-21 Liebherr-Werk Nenzing Gmbh Arbeitsgerät mit einem mechanischen Schlitzwandgreifer und Verfahren zum Durchführen eines Arbeitsschritts eines solchen

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776513A (en) * 1971-05-10 1973-12-04 F Mosley Crane
US3788075A (en) * 1972-07-13 1974-01-29 Borg Warner Valve mechanism
US4047311A (en) * 1974-09-23 1977-09-13 Kelley Charles S Automatic grab bucket with pressure responsive solenoid control
US4000683A (en) * 1975-05-27 1977-01-04 Caterpillar Tractor Co. Hydraulic load lifting system
GB1529331A (en) * 1976-03-02 1978-10-18 Clarke Chapman Ltd Winding mechanism
US4094228A (en) * 1977-06-06 1978-06-13 Caterpillar Tractor Co. Fluid system having load pressure equalizing valve assemblies
DE2814384A1 (de) * 1978-04-04 1979-10-18 Teves Gmbh Alfred Einrichtung zur erzeugung und bereitstellung eines vakuums in fahrzeug-hilfskraftsystemen
US5186000A (en) * 1988-05-10 1993-02-16 Hitachi Construction Machinery Co., Ltd. Hydraulic drive system for construction machines
DE68912508T2 (de) * 1988-10-26 1994-05-19 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.), Kobe Steuervorrichtung für die auf einen Steuerhebel auszuübende Kraft.
JP2872442B2 (ja) * 1991-04-24 1999-03-17 日立建機株式会社 主巻および補巻ウインチの同負荷制御装置
US5319932A (en) * 1993-04-28 1994-06-14 Roche Engineering Corporation Power sensing regenerator
US5439200A (en) * 1993-12-10 1995-08-08 Columbus Mckinnon Corporation Air lifting and balancing unit
US5806838A (en) * 1995-11-30 1998-09-15 Kalve; Atle Hydraulic system for driving a winch during quartering and lifting modes
US5734112A (en) * 1996-08-14 1998-03-31 Micro Motion, Inc. Method and apparatus for measuring pressure in a coriolis mass flowmeter
DE29802606U1 (de) * 1998-02-16 1998-04-23 Zasche Fördertechnik GmbH, 86720 Nördlingen Handgesteuertes Hebegerät mit einem pneumatischen Hubantrieb
JP3508662B2 (ja) * 1998-12-25 2004-03-22 コベルコ建機株式会社 油圧駆動ウィンチの制御方法および同装置

Also Published As

Publication number Publication date
US6619626B1 (en) 2003-09-16
DK1099859T3 (da) 2005-09-19
DE50010342D1 (de) 2005-06-23
PT1099859E (pt) 2005-09-30
EP1099859A3 (de) 2003-11-12
ES2243198T3 (es) 2005-12-01
DE19955750B4 (de) 2004-05-27
ATE295943T1 (de) 2005-06-15
EP1099859A2 (de) 2001-05-16
DE19955750A1 (de) 2001-05-31

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