GB1358768A - Anti-pendulating lifting cranes - Google Patents
Anti-pendulating lifting cranesInfo
- Publication number
- GB1358768A GB1358768A GB4430671A GB4430671A GB1358768A GB 1358768 A GB1358768 A GB 1358768A GB 4430671 A GB4430671 A GB 4430671A GB 4430671 A GB4430671 A GB 4430671A GB 1358768 A GB1358768 A GB 1358768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- line
- pressure
- load
- crane
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1358768 Anti-pendulating cranes HAGGLUND & SONER AB 23 Sept 1971 [24 Sept 1970] 44306/71 Heading B8B [Also in Division F1] A crane with a jib 4 carrying a load 11 is slewed in the normal way by an hydraulic pump 13 supplying an hydraulic motor 14 via a valve block unit U which includes a selector valve 15, four non-return valves 16, 17, 18, 19, a pressure limiting valve 20 and a control valve 21. Outside the unit U is a further pressure limiting valve 22. The motor 14 is braked by a cylinder 23. Supplementary apparatus for damping pendulation is represented by the block V which includes a pendulation damping valve 24, two actuating valves 25, 26, braking valve 27 and a non-return valve 28. Pressure is applied to the block V through line 55, control pressure through line 47 and supply pressure through line 48. Operation of the pendulating damping valve 24, after the jib 4 has been slewed to a desired position, moves it from the position shown to allow pressure from the line 55 to enter the line 56. Control pressure from the line 47 holds the valve 25 so as to allow the pressure from line 56 to pass through line 60 to act against the control pressure in line 51 to move valve 26 into its left position. The valve 27 is moved by the pressure from line 55 through line 57 augmenting the control pressure acting through the line 50 to allow the supply pressure from line 48 to pass through the line 52 to the cylinder 23 to hold the brake off. Reduction of pressure in the line 42 due to the position of the valve 26 allows the pressure limiting valve 20 to open. By the short-circuit obtained: lines 29, 30, 36; valve 16; lines 37, 39; valve 20; lines 62, 63; valve 19 and lines 34, 31, 32 the motor 14 can move freely to allow the still moving load to pull the jib 4 to turn the crane so that kinetic and static energy possessed by the load is dissipated by the friction of the crane, thereby damping movement of the load. The damping of pendulation can also be performed during full speed slewing by the above-described disengagement the slewing machinery allowing the crane to continue to turn by its own kinetic energy and that of the load 11 until its slewing motion stops. In a similar manner to the above an overhead bridge crane (not shown) with a crab carrying a load can utilize the friction of the crab to damp pendulation of the load.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1298370A SE345642B (en) | 1970-09-24 | 1970-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1358768A true GB1358768A (en) | 1974-07-03 |
Family
ID=20296624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4430671A Expired GB1358768A (en) | 1970-09-24 | 1971-09-23 | Anti-pendulating lifting cranes |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5630318B1 (en) |
DE (1) | DE2146935C2 (en) |
GB (1) | GB1358768A (en) |
NO (1) | NO134551C (en) |
SE (1) | SE345642B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020120699A1 (en) * | 2020-08-05 | 2022-02-10 | Konecranes Global Corporation | Slewing jib crane with a camera and methods for reducing load sway during crane operation |
CN117985600B (en) * | 2024-04-01 | 2024-06-07 | 四川省公路规划勘察设计研究院有限公司 | Steel plate lifting device for bridge reinforcement maintenance |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE668475C (en) * | 1934-01-11 | 1938-12-03 | Ardeltwerke G M B H | Safety device for the engines of hoists |
DE800033C (en) * | 1949-11-05 | 1950-08-11 | Carl Dipl-Ing Gensel | Slewing or chassis drive for cranes or the like. |
DE956882C (en) * | 1954-03-25 | 1957-01-24 | Demag Zug Gmbh | Slewing gear brake for slewing cranes, especially tower cranes |
DE1484743B1 (en) * | 1963-04-24 | 1970-09-10 | Orenstein & Koppel Ag | Circuit for hydrostatically operated hydro devices |
DE1207578B (en) * | 1963-04-25 | 1965-12-23 | Licentia Gmbh | Arrangement to compensate for load swings in cranes |
US3259251A (en) * | 1963-12-26 | 1966-07-05 | Galion Jeffrey Mfg Co | Extensible boom with tandem operating cylinders |
DE1241077B (en) * | 1964-03-19 | 1967-05-24 | Demag Zug Gmbh | Method for damping load swaying when braking mobile or swiveling hoists with loads hanging on load ropes |
US3303647A (en) * | 1964-06-06 | 1967-02-14 | Komatsu Mfg Co Ltd | Hydraulically operated power system |
FI44036B (en) * | 1966-08-25 | 1971-04-30 | Kone Oy |
-
1970
- 1970-09-24 SE SE1298370A patent/SE345642B/xx unknown
-
1971
- 1971-09-09 NO NO335471A patent/NO134551C/no unknown
- 1971-09-20 DE DE19712146935 patent/DE2146935C2/en not_active Expired
- 1971-09-23 GB GB4430671A patent/GB1358768A/en not_active Expired
- 1971-09-23 JP JP7456171A patent/JPS5630318B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS5630318B1 (en) | 1981-07-14 |
DE2146935C2 (en) | 1982-10-07 |
NO134551C (en) | 1976-11-03 |
NO134551B (en) | 1976-07-26 |
SE345642B (en) | 1972-06-05 |
DE2146935A1 (en) | 1972-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1224948A (en) | A cargo crane | |
CN202657851U (en) | Mast lifting follow-up control device | |
GB1370736A (en) | Winch apparatus | |
GB1335386A (en) | Systems for operating and controlling hydraulically driven winches hoists and the like | |
GB1343803A (en) | Hydraulic vehicle crane | |
GB1358768A (en) | Anti-pendulating lifting cranes | |
GB1186738A (en) | Improvements in or relating to Load-Lifting Devices incorporating Load Spreaders | |
GB1228802A (en) | ||
GB1403124A (en) | Air hoist with an overload protection device | |
GB1118978A (en) | Safety operating system for cranes with telescopic jibs | |
GB1453714A (en) | Load handling equipment | |
GB1082010A (en) | Controlling winches by fluid pressure | |
RU190777U1 (en) | HYDRAULIC DRIVE OF TURNING ARROW OF A SHIP CRANE | |
GB1416212A (en) | Machines having a component movable in extend and retract directions by at least one hydraulic cylinder | |
GB1407113A (en) | Circular band brake | |
CN112875552B (en) | Winch follow-up control hydraulic system | |
GB1413202A (en) | Device for precision positioning of objects | |
SU95470A1 (en) | Hydraulic drive of safety lift brake | |
CN207511748U (en) | A kind of winch disk type gate brake | |
ATE51204T1 (en) | CRANE LOADS. | |
SU669123A1 (en) | Automatic brake | |
FR2261216A1 (en) | Servo-controlled crane overload protection - has derricking ram pressure detector releasing pressure from servo-controls | |
GB1150695A (en) | Device for Damping Oscillations of Crane Hoist Ropes | |
SU604801A1 (en) | Hydraulic drive of load-lifting winch of self-propelled jib crane | |
SU502829A1 (en) | Supporting part of the crane |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |