EP0985629A1 - Kran - Google Patents
Kran Download PDFInfo
- Publication number
- EP0985629A1 EP0985629A1 EP98116951A EP98116951A EP0985629A1 EP 0985629 A1 EP0985629 A1 EP 0985629A1 EP 98116951 A EP98116951 A EP 98116951A EP 98116951 A EP98116951 A EP 98116951A EP 0985629 A1 EP0985629 A1 EP 0985629A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crane
- cylinder
- pressure
- load
- signal
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
-
- 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
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
- B66C13/066—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads for minimising vibration of a boom
-
- 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
- B66C13/18—Control systems or devices
-
- 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
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
- F15B2211/30515—Load holding 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control 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
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single 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
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional 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
- F15B2211/30—Directional control
- F15B2211/35—Directional control combined with flow 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load 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
- F15B2211/70—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
-
- 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
- F15B2211/76—Control of force or torque of the output member
Definitions
- the invention relates to a crane with a hydraulically operated boom system, with at least one cylinder for actuating the boom system and a device to monitor the pressure in the cylinder indicating the load on the crane, the Flow of hydraulic fluid to the cylinder by changing the cross section of a Valve is controllable.
- Vibrations of the support structure of the crane or the load carried by the crane come.
- vibrations in the vertical direction can occur when a load is in is moved in the vertical direction, i.e. raised or lowered, and this movement is stopped.
- Such vibrations lead to load peaks in the support structure of the crane and / or uncontrolled movements of the load.
- the classic method for actively damping unwanted vibrations is one Regulation in which the oscillation is caused by a 180 ° phase-shifted, equal frequency Vibration is damped.
- the method works well for gradual rocking of vibrations, for example of pendulum movements of moving loads Portal cranes (see. DE 42 38 795 A1) to prevent.
- the time required for the determination However, the phase and frequency of the disturbing harmonic oscillation is relatively large. In particular, suddenly occurring stresses become dangerous Initial phase not diminished.
- the aim of the invention is a crane which is used to avoid dynamic overloading is provided with a real and at the same time quick-acting regulation.
- the control according to the invention is based on the Measurement of a characteristic value for the dynamic loading of the crane, whereby directly on the crane is measured. So the crane operator is not corrected from the outset, but first when dynamic loads occur which affect the structure of the crane endanger or lead to undesirable load movements by forming a Signal, which the drive for adjusting the valve cross section in the sense of a reduction actuated the determined pressure change, counteracted. The signal is therefore independent from the setpoint of the valve cross section defined by the position of a hand lever.
- Fig. 1 shows a loading crane 1 of classic design for a truck.
- the crane 1 points a main arm 2 and a multi-telescopic articulated arm 5, at the tip a crane hook 4 is arranged for hanging loads.
- the main arm 2 of the crane 1 is pivoted relative to the column 6 of the crane 1 by means of a lifting cylinder 3.
- Fig. 2 shows the details of the device according to the invention, in particular on a cylinder is attached to said lifting cylinder 3.
- the control of the lifting cylinder 3 takes place via a commercially available remote control, which consists of a transmitter 9 and Receiver 10 exists.
- Control signals from the actuation of the control lever on the transmitter 9 originate, are transmitted by radio to the receiver 10, which in turn is a signal forwards to the slider 12.
- the slide 12 is a multiple proportional valve with volume control, the drives for adjusting the valve cross sections are integrated in the slide 12.
- Such a slide is for example under the designation PVG 32 available from Danfoss.
- the differentiating unit 8 supplies an output signal which the drive for adjustment of the valve cross section in the sense of a reduction in the pressure change detected operated.
- the output signal of the differentiating unit 8 can with a factor k (p) that of the measured pressure values depends, are multiplied, whereby the signal is achieved increases disproportionately at higher pressure values. This takes account of the fact borne that the risk of the support structures of the crane from dynamic loads is particularly large given a high static base load.
- the output signal of the differentiating unit 8 is used to determine the desired position of the valves Slider 12 defining signal, which is forwarded by the receiver 10, superimposed and then fed to the slider 12.
- this overlay means that the adjustment speed of the valves in the slide 12 and thus the acceleration of the crane boom is reduced. Since only large accelerations are disadvantageous for the crane, low values of dp / dt the generation of a correction signal can be suppressed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Automation & Control Theory (AREA)
- Control And Safety Of Cranes (AREA)
- Jib Cranes (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims (4)
- Kran mit einem hydraulisch betätigten Auslegersystem, mit mindestens einem Zylinder zur Betätigung des Auslegersystems und einer Einrichtung zur Überwachung des die Belastung des Krans anzeigenden Druckes im Zylinder, wobei der Zufluß von Hydraulikflüssigkeit zum Zylinder durch Veränderung des Querschnitts eines Ventils steuerbar ist, dadurch gekennzeichnet, daß in Abhängigkeit von der im Zylinder festgestellten zeitlichen Änderung des Druckes bzw. der zeitlichen Änderung der Belastung des im Zylinder geführten Kolbens ein Signal erzeugt wird, welches den Antrieb zur Verstellung des Ventilquerschnitts im Sinne einer Verringerung der festgestellten Druck- bzw. Belastungsänderung betätigt.
- Kran nach Anspruch 1, dadurch gekennzeichnet, daß die Stärke des Signals bei höheren Werten des Druckes überproportional steigt.
- Kran nach Anspruch 1, dadurch gekennzeichnet, daß das Signal unabhängig von dem durch die Stellung eines Handhebels definierten Sollwert des Ventilquerschnitts ist.
- Kran nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß der Zylinder der Hubzylinder für den Hauptarm eines Ladekrans für ein Lastfahrzeug ist.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES98116951T ES2158637T3 (es) | 1998-09-08 | 1998-09-08 | Grua. |
DK98116951T DK0985629T3 (da) | 1998-09-08 | 1998-09-08 | Kran |
DE59801090T DE59801090D1 (de) | 1998-09-08 | 1998-09-08 | Kran |
EP98116951A EP0985629B1 (de) | 1998-09-08 | 1998-09-08 | Kran |
AT98116951T ATE203488T1 (de) | 1998-09-08 | 1998-09-08 | Kran |
KR10-1999-0035086A KR100392333B1 (ko) | 1998-09-08 | 1999-08-24 | 크레인 |
US09/383,404 US6328173B1 (en) | 1998-09-08 | 1999-08-26 | Crane |
JP11244878A JP2000191285A (ja) | 1998-09-08 | 1999-08-31 | クレ―ン |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98116951A EP0985629B1 (de) | 1998-09-08 | 1998-09-08 | Kran |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0985629A1 true EP0985629A1 (de) | 2000-03-15 |
EP0985629B1 EP0985629B1 (de) | 2001-07-25 |
Family
ID=8232594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98116951A Expired - Lifetime EP0985629B1 (de) | 1998-09-08 | 1998-09-08 | Kran |
Country Status (8)
Country | Link |
---|---|
US (1) | US6328173B1 (de) |
EP (1) | EP0985629B1 (de) |
JP (1) | JP2000191285A (de) |
KR (1) | KR100392333B1 (de) |
AT (1) | ATE203488T1 (de) |
DE (1) | DE59801090D1 (de) |
DK (1) | DK0985629T3 (de) |
ES (1) | ES2158637T3 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1201575A2 (de) * | 2000-10-25 | 2002-05-02 | Veitsch-Radex GmbH | Vorrichtung zur Aufnahme und zum Transport eines Gegenstandes |
EP1964756A1 (de) * | 2007-01-24 | 2008-09-03 | Klemm Bohrtechnik GmbH | Pendelfahrwerk, insbesondere für ein Bohrgerät |
DE102010010386A1 (de) * | 2010-03-05 | 2011-09-08 | Liebherr-Werk Nenzing Gmbh | Kranwippwerk und Kran |
DE102010038218A1 (de) | 2010-10-15 | 2012-04-19 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Kran mit einer Struktur, mit mindestens einem an der Struktur angreifenden Aktuator und einer den Aktuator zur Unterdrückung von Schwingungen der Struktur ansteuernden Steuerung |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6705079B1 (en) * | 2002-09-25 | 2004-03-16 | Husco International, Inc. | Apparatus for controlling bounce of hydraulically powered equipment |
US7386377B2 (en) * | 2005-04-07 | 2008-06-10 | Sorensen David I | Vehicle and equipment monitoring apparatus |
US8286652B2 (en) * | 2009-09-22 | 2012-10-16 | Eaton Corporation | Configurable active jerk control |
CN101746675B (zh) * | 2009-12-31 | 2012-05-02 | 三一汽车制造有限公司 | 起重机超起装置及其控制系统和控制方法 |
US9004842B2 (en) | 2011-10-10 | 2015-04-14 | Wastequip, Llc | Hoist apparatus |
CN102797787B (zh) * | 2012-08-17 | 2013-11-20 | 中联重科股份有限公司 | 混凝土布料设备及其臂架振动抑制的方法、控制器和装置 |
CN102942115B (zh) * | 2012-09-20 | 2014-07-23 | 宁波凯荣船用机械有限公司 | 船用液压回转吊变载控制装置及控制方法 |
US9810242B2 (en) | 2013-05-31 | 2017-11-07 | Eaton Corporation | Hydraulic system and method for reducing boom bounce with counter-balance protection |
WO2015031821A1 (en) | 2013-08-30 | 2015-03-05 | Eaton Corporation | Control method and system for using a pair of independent hydraulic metering valves to reduce boom oscillations |
US10316929B2 (en) * | 2013-11-14 | 2019-06-11 | Eaton Intelligent Power Limited | Control strategy for reducing boom oscillation |
CN105849421B (zh) | 2013-11-14 | 2019-01-15 | 伊顿公司 | 用于减少动臂跳动的先导控制机构 |
EP3169858B1 (de) | 2014-07-15 | 2021-02-17 | Eaton Intelligent Power Limited | Verfahren und vorrichtung zur ermöglichung der auslegerfederungsreduzierung und zur vorbeugung von selbstständiger bewegung in hydrauliksystemen |
JP6595198B2 (ja) * | 2015-04-08 | 2019-10-23 | 古河ユニック株式会社 | 増速弁装置 |
EP3615814A4 (de) | 2017-04-28 | 2021-01-27 | Eaton Intelligent Power Limited | System zur dämpfung von masseninduzierten schwingungen in maschinen mit hydraulisch gesteuerten auslegern oder länglichen elementen |
EP3615813A4 (de) | 2017-04-28 | 2021-01-27 | Eaton Intelligent Power Limited | System mit bewegungssensoren zur dämpfung von masseninduzierten schwingungen in maschinen |
EP3653562A1 (de) * | 2018-11-19 | 2020-05-20 | B&R Industrial Automation GmbH | Verfahren und schwingungsregler zum ausregeln von schwingungen eines schwingfähigen technischen systems |
WO2021142826A1 (zh) * | 2020-01-19 | 2021-07-22 | 徐工集团工程机械股份有限公司 | 臂架振动控制方法、装置及工程机械 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2268177A1 (en) * | 1974-04-22 | 1975-11-14 | Bennes Marrel | Hydraulic lorry hoist ram control system - has circuit by-passing variable quantity from pump outlet back to tank |
DE3719897A1 (de) * | 1986-06-19 | 1987-12-23 | Fiskars Ab Oy | Kransteuersystem |
EP0378129A1 (de) * | 1989-01-13 | 1990-07-18 | Hitachi Construction Machinery Co., Ltd. | Hydraulisches System für den Auslegerzylinder einer Konstruktionsmaschine |
EP0454923A1 (de) * | 1990-04-25 | 1991-11-06 | Kabushiki Kaisha Kobe Seiko Sho | Drehwerksteuerungsvorrichtung für Kran |
WO1995029118A1 (en) * | 1994-04-22 | 1995-11-02 | Hiab Ab | A device for damping undesirable oscillations in a crane member |
DE4425455A1 (de) * | 1994-07-19 | 1996-01-25 | Bosch Gmbh Robert | Hydraulische Steuereinrichtung |
DE4428691A1 (de) * | 1994-08-12 | 1996-02-15 | Rexroth Mannesmann Gmbh | Regelanordnung für hydraulische Antriebe |
US5622226A (en) * | 1996-01-29 | 1997-04-22 | Caterpillar Inc. | Method for controlling bounce of a work implement |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2788134B2 (ja) * | 1990-07-05 | 1998-08-20 | ハイルマイア ウント バインライン ファブリク フュル オエル − ハイドロリク ゲ−エムベ−ハー ウント コンパニー,カーゲー | 液圧式制御装置 |
DE4030954C2 (de) * | 1990-09-29 | 1994-08-04 | Danfoss As | Verfahren zur Steuerung der Bewegung eines hydraulisch bewegbaren Arbeitsgeräts und Bahnsteuereinrichtung zur Durchführung des Verfahrens |
DE69220293T2 (de) * | 1991-01-28 | 1998-01-22 | Hitachi Construction Machinery | Hydraulisches steuerungssystem für hydraulische erdbaumaschine |
JPH0756314Y2 (ja) * | 1991-02-05 | 1995-12-25 | 三菱重工業株式会社 | フォークリフトの制御装置 |
JPH05256303A (ja) * | 1992-01-15 | 1993-10-05 | Caterpillar Inc | 油圧回路制御装置 |
JP3139767B2 (ja) * | 1992-08-25 | 2001-03-05 | 日立建機株式会社 | 油圧作業機の油圧駆動装置 |
KR940703973A (ko) * | 1992-10-29 | 1994-12-12 | 오까다 하지메 | 유압제어밸브장치 및 유압구동장치 |
KR950700493A (ko) * | 1992-12-04 | 1995-01-16 | 오까다 하지메 | 유압재생장치 |
AU664517B2 (en) * | 1993-05-28 | 1995-11-16 | Kubota Corporation | Hydraulic control system |
US5383390A (en) * | 1993-06-28 | 1995-01-24 | Caterpillar Inc. | Multi-variable control of multi-degree of freedom linkages |
JPH07234727A (ja) * | 1994-02-21 | 1995-09-05 | Komatsu Ltd | 作業機の振動抑制装置およびその方法 |
US5666806A (en) * | 1995-07-05 | 1997-09-16 | Caterpillar Inc. | Control system for a hydraulic cylinder and method |
US5737993A (en) * | 1996-06-24 | 1998-04-14 | Caterpillar Inc. | Method and apparatus for controlling an implement of a work machine |
US5897287A (en) * | 1996-09-25 | 1999-04-27 | Case Corporation | Electronic ride control system for off-road vehicles |
JP3425844B2 (ja) * | 1996-09-30 | 2003-07-14 | コベルコ建機株式会社 | 油圧ショベル |
US5784945A (en) * | 1997-05-14 | 1998-07-28 | Caterpillar Inc. | Method and apparatus for determining a valve transform |
JPH11343095A (ja) * | 1998-06-04 | 1999-12-14 | Kobe Steel Ltd | ブーム式作業機械 |
-
1998
- 1998-09-08 ES ES98116951T patent/ES2158637T3/es not_active Expired - Lifetime
- 1998-09-08 DK DK98116951T patent/DK0985629T3/da active
- 1998-09-08 AT AT98116951T patent/ATE203488T1/de active
- 1998-09-08 DE DE59801090T patent/DE59801090D1/de not_active Expired - Lifetime
- 1998-09-08 EP EP98116951A patent/EP0985629B1/de not_active Expired - Lifetime
-
1999
- 1999-08-24 KR KR10-1999-0035086A patent/KR100392333B1/ko active IP Right Grant
- 1999-08-26 US US09/383,404 patent/US6328173B1/en not_active Expired - Lifetime
- 1999-08-31 JP JP11244878A patent/JP2000191285A/ja active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2268177A1 (en) * | 1974-04-22 | 1975-11-14 | Bennes Marrel | Hydraulic lorry hoist ram control system - has circuit by-passing variable quantity from pump outlet back to tank |
DE3719897A1 (de) * | 1986-06-19 | 1987-12-23 | Fiskars Ab Oy | Kransteuersystem |
EP0378129A1 (de) * | 1989-01-13 | 1990-07-18 | Hitachi Construction Machinery Co., Ltd. | Hydraulisches System für den Auslegerzylinder einer Konstruktionsmaschine |
EP0454923A1 (de) * | 1990-04-25 | 1991-11-06 | Kabushiki Kaisha Kobe Seiko Sho | Drehwerksteuerungsvorrichtung für Kran |
WO1995029118A1 (en) * | 1994-04-22 | 1995-11-02 | Hiab Ab | A device for damping undesirable oscillations in a crane member |
DE4425455A1 (de) * | 1994-07-19 | 1996-01-25 | Bosch Gmbh Robert | Hydraulische Steuereinrichtung |
DE4428691A1 (de) * | 1994-08-12 | 1996-02-15 | Rexroth Mannesmann Gmbh | Regelanordnung für hydraulische Antriebe |
US5622226A (en) * | 1996-01-29 | 1997-04-22 | Caterpillar Inc. | Method for controlling bounce of a work implement |
Non-Patent Citations (1)
Title |
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LODIGE H ET AL: "AKTIVE SCHWINGUNGSDAMPFUNG FUR UNGEFEDERTE ARBEITSMASCHINEN", OLHYDRAULIK UND PNEUMATIK, vol. 39, no. 3, 1 March 1995 (1995-03-01), pages 188 - 192, XP000492760 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1201575A2 (de) * | 2000-10-25 | 2002-05-02 | Veitsch-Radex GmbH | Vorrichtung zur Aufnahme und zum Transport eines Gegenstandes |
EP1201575A3 (de) * | 2000-10-25 | 2002-08-14 | Veitsch-Radex GmbH | Vorrichtung zur Aufnahme und zum Transport eines Gegenstandes |
EP1964756A1 (de) * | 2007-01-24 | 2008-09-03 | Klemm Bohrtechnik GmbH | Pendelfahrwerk, insbesondere für ein Bohrgerät |
US8485288B2 (en) | 2007-01-24 | 2013-07-16 | Klemm Bohrtechnik Gmbh | Oscillating undercarriage, in particular for a drilling device |
DE102010010386A1 (de) * | 2010-03-05 | 2011-09-08 | Liebherr-Werk Nenzing Gmbh | Kranwippwerk und Kran |
DE102010010386B4 (de) * | 2010-03-05 | 2014-11-20 | Liebherr-Werk Nenzing Gmbh | Vorrichtung und Verfahren zur Überwachung eines Kranwippwerkes und Kran |
DE102010038218A1 (de) | 2010-10-15 | 2012-04-19 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Kran mit einer Struktur, mit mindestens einem an der Struktur angreifenden Aktuator und einer den Aktuator zur Unterdrückung von Schwingungen der Struktur ansteuernden Steuerung |
DE102010038218B4 (de) * | 2010-10-15 | 2014-02-13 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Kran mit einer Struktur, mit mindestens einem an der Struktur angreifenden Aktuator und einer den Aktuator zur Unterdrückung von Schwingungen der Struktur ansteuernden Steuerung |
Also Published As
Publication number | Publication date |
---|---|
KR20000022752A (ko) | 2000-04-25 |
KR100392333B1 (ko) | 2003-07-22 |
US6328173B1 (en) | 2001-12-11 |
ES2158637T3 (es) | 2001-09-01 |
DE59801090D1 (de) | 2001-08-30 |
EP0985629B1 (de) | 2001-07-25 |
ATE203488T1 (de) | 2001-08-15 |
JP2000191285A (ja) | 2000-07-11 |
DK0985629T3 (da) | 2001-09-24 |
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