GB1355515A - Method of and arrangement for suppressing pendulum oscillations of a load hanging on a rope and conveyed by a crane trolley - Google Patents
Method of and arrangement for suppressing pendulum oscillations of a load hanging on a rope and conveyed by a crane trolleyInfo
- Publication number
- GB1355515A GB1355515A GB1403371A GB1403371A GB1355515A GB 1355515 A GB1355515 A GB 1355515A GB 1403371 A GB1403371 A GB 1403371A GB 1403371 A GB1403371 A GB 1403371A GB 1355515 A GB1355515 A GB 1355515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- travel
- oscillation
- load
- time
- cycle
- 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
Links
Classifications
-
- 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
- B66C13/063—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads electrical
Abstract
1355515 Inhibiting crane trolley loads swing- ing SIEMENS AG 10 May 1971 [9 May 1970] 14033/71 Heading B8B [Also in Division G3] In a method of inhibiting pendulum oscillations of a load hanging on a rope and adapted to move by means of a crane trolley with a speedcontrolled drive, the travel time for a predetermined distance to be travelled by the crane trolley is adapted, by choice of the speed to which the trolley is to be accelerated from rest with a predetermined acceleration and is to be decelerated to rest with a corresponding deceleration, to be equal to the period of the cycle, relative to a mean rope length, of the pendulum oscillation or a whole-number multiple of this period, and the acceleration is within the first cycle of oscillation of the load, while the deceleration is within the last cycle of oscillation of the load. In general, application of the method results in free swinging of the load during the whole period of travel, the swinging induced by the acceleration being annulled by the deceleration. In the special case of linear acceleration and deceleration respectively throughout the first and last cycles the load does not swing throughout any remaining period of constant velocity. Fig. 1 is a block circuit diagram showing control apparatus for carrying out the method. A crane trolley motor 1 is controlled by a thyristor 2 controlled by a rotational speed controller 3 to which is fed a signal from a travel control arrangement including a travel controller 4 and a ramp generator 5 capable of providing a rising speed signal. A tacho-generator 6 coupled to the motor 1 supplies the actual rotational speed n while a signal source 7 with a sequentially-connected digital-analog converter 8 produces an actual travel distance value S. The desired travel distance value S* is set by the operator on a keyboard 15 whose individual keys are each associated with a predetermined travel distance. The system is automated by feeding the ramp generator 5 with a signal which limits the time of the rising speed signal in dependence on the particular mean rope length l and the particular desired travel distance value S*. This signal is provided by the circuit arrangement, shown in the dotdash line, which comprises an operational amplifier 9, a multiplier 10 and a critical value signalling arrangement 11 which forms from the values I and s* the time t z corresponding to a whole-number multiple of the time of one oscillation cycle. The operational amplifier 9 operates in accordance with the formula v being the speed of travel and b the acceleration. The above circuit arrangement is suitable for travel distances s* which are to be travelled in a time t z corresponding to at least one cycle of oscillation. Fig. 2 (not shown) illustrates a modification suitable for times greater than two cycles of oscillation when it is possible to run at a constant speed without pendulum oscillations. In addition allowance may be made for change in the mean rope length during travel altering the period of oscillation and thus the required deceleration time.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702022745 DE2022745C3 (en) | 1970-05-09 | 1970-05-09 | Arrangement for suppressing pendulum oscillations of a load suspended on a rope and transported by a trolley |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1355515A true GB1355515A (en) | 1974-06-05 |
Family
ID=5770687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1403371A Expired GB1355515A (en) | 1970-05-09 | 1971-05-10 | Method of and arrangement for suppressing pendulum oscillations of a load hanging on a rope and conveyed by a crane trolley |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE766544A (en) |
CH (1) | CH540192A (en) |
DE (1) | DE2022745C3 (en) |
FR (1) | FR2088462B1 (en) |
GB (1) | GB1355515A (en) |
NL (1) | NL170831C (en) |
SE (1) | SE392088B (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3005461A1 (en) * | 1980-02-14 | 1981-09-24 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | Motor control circuit for crane - uses reference generator taking into account load wt. cable length and angle of swing |
SE429748B (en) * | 1981-09-21 | 1983-09-26 | Asea Ab | KEEP LOADING GOODS DURING SIDE MOVEMENT BY A GOOD PREVENTING TRUCK |
US4680929A (en) * | 1983-04-04 | 1987-07-21 | Kubota, Ltd. | Swivelling working vehicle |
DE3335402A1 (en) * | 1983-09-29 | 1985-04-11 | Siemens AG, 1000 Berlin und 8000 München | Arrangement for damping oscillations of a load suspended from a cable of a crane or other hoist |
FR2571867B1 (en) * | 1984-10-11 | 1987-01-09 | Bertin & Cie | METHOD AND DEVICE FOR LIMITING THE SWING OF A FREELY SUSPENDED LOAD UNDER A MOBILE SUPPORT. |
JPH0742072B2 (en) * | 1986-05-02 | 1995-05-10 | 三菱電機株式会社 | Steady stop control device for suspension crane |
CA1333416C (en) * | 1988-11-18 | 1994-12-06 | Tetsuya Nishida | Pivotal movement control device for boom-equipped working machine |
FR2664885B1 (en) * | 1990-07-18 | 1995-08-04 | Caillard | METHOD FOR CONTROLLING THE MOVEMENT OF A PENDULUM LOAD AND DEVICE FOR ITS IMPLEMENTATION. |
DE69215340T2 (en) * | 1991-12-18 | 1997-04-17 | Universal Instruments Corp | Electronic damping system |
US5432423A (en) * | 1993-04-29 | 1995-07-11 | Universal Instruments Corporation | Electronic damping system |
US5443566A (en) * | 1994-05-23 | 1995-08-22 | General Electric Company | Electronic antisway control |
DE19510167C2 (en) * | 1995-03-21 | 1997-04-10 | Stahl R Foerdertech Gmbh | Suspension with swing damping |
DE19510785C2 (en) * | 1995-03-24 | 1997-04-10 | Stahl R Foerdertech Gmbh | Infinitely adjustable travel drive for hoists |
DE19907989B4 (en) * | 1998-02-25 | 2009-03-19 | Liebherr-Werk Nenzing Gmbh | Method for controlling the path of cranes and device for path-accurate method of a load |
DE10029579B4 (en) | 2000-06-15 | 2011-03-24 | Hofer, Eberhard P., Prof. Dr. | Method for orienting the load in crane installations |
DE10058072B4 (en) * | 2000-11-23 | 2004-05-27 | Cargolifter Ag I.Ins. | Device for suspending a load hanging from a carrying device |
US7831333B2 (en) | 2006-03-14 | 2010-11-09 | Liebherr-Werk Nenzing Gmbh | Method for the automatic transfer of a load hanging at a load rope of a crane or excavator with a load oscillation damping and a trajectory planner |
ATE455726T1 (en) | 2006-03-15 | 2010-02-15 | Liebherr Werk Nenzing | METHOD FOR AUTOMATICALLY HANDLING A LOAD OF A CRANE WITH LOAD SWING DAMPING AND PATH PLANNER |
DE102010007888A1 (en) | 2010-02-08 | 2011-08-11 | Wafios AG, 72764 | Method and device for producing a bent part |
DE102015002864B4 (en) * | 2015-03-06 | 2020-03-19 | Sew-Eurodrive Gmbh & Co Kg | System with lifting mechanism which can be moved by means of one or more travel drives and method for operating the system |
CN112209236B (en) * | 2020-10-12 | 2021-06-29 | 湖南天桥嘉成智能科技有限公司 | Anti-swing control method for unmanned vehicle with variable rope length |
-
1970
- 1970-05-09 DE DE19702022745 patent/DE2022745C3/en not_active Expired
-
1971
- 1971-04-06 NL NL7104589A patent/NL170831C/en not_active IP Right Cessation
- 1971-04-29 CH CH621271A patent/CH540192A/en not_active IP Right Cessation
- 1971-04-30 BE BE766544A patent/BE766544A/en not_active IP Right Cessation
- 1971-05-07 SE SE595071A patent/SE392088B/en unknown
- 1971-05-07 FR FR7116683A patent/FR2088462B1/fr not_active Expired
- 1971-05-10 GB GB1403371A patent/GB1355515A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2022745B2 (en) | 1978-11-16 |
NL7104589A (en) | 1971-11-11 |
DE2022745C3 (en) | 1979-07-19 |
DE2022745A1 (en) | 1971-11-25 |
FR2088462B1 (en) | 1976-03-19 |
BE766544A (en) | 1971-09-16 |
NL170831C (en) | 1983-01-03 |
CH540192A (en) | 1973-08-15 |
FR2088462A1 (en) | 1972-01-07 |
NL170831B (en) | 1982-08-02 |
SE392088B (en) | 1977-03-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1355515A (en) | Method of and arrangement for suppressing pendulum oscillations of a load hanging on a rope and conveyed by a crane trolley | |
KR880001514A (en) | Crane control method | |
ES480229A1 (en) | Digital speed pattern generator | |
GB1431660A (en) | Controlled velocity drive | |
GB1111322A (en) | Elevator control system | |
US3799057A (en) | Electrical control system | |
US3785463A (en) | Final stopping control | |
GB1338818A (en) | Regulating device for reversing curretnt converters | |
US3442352A (en) | Elevator control system | |
KR870011035A (en) | Dustproof Control Method in Suspension Crane | |
GB1183126A (en) | Improvements in or relating to Bridge Cranes | |
US3850308A (en) | Apparatus for accommodating the pendulum action of a load carried by a rope from a traveller | |
GB1422875A (en) | Control system for a reluctance type motor | |
SE7601471L (en) | ELEVATOR ENGINE CONTROL SYSTEM | |
ES8501710A1 (en) | Speed pattern generator for an elevator car | |
EP0130750A1 (en) | Lift brake control method and apparatus | |
GB1284985A (en) | Improvements in pendulation control system for suspended loads in transit | |
US3516518A (en) | Elevator control system | |
FI96300C (en) | Control device for elevator floors | |
JPS5415121A (en) | Constant output controller for motors | |
GB1108610A (en) | A control system for a hoisting apparatus | |
ES8304513A1 (en) | Elevator system | |
ES446307A1 (en) | Method of leading a rail vehicle by means of a control center from an automatically controlled area to an area of individual control | |
JPS5464317A (en) | Method of controlling acceleration and deceleration of electric motor driven vehicle in automatic operation | |
JPS6469202A (en) | Running control of moving body |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |