GB1215798A - Cranes having a telescopic boom with a compensating boom hoist cable system - Google Patents
Cranes having a telescopic boom with a compensating boom hoist cable systemInfo
- Publication number
- GB1215798A GB1215798A GB36678/69A GB3667869A GB1215798A GB 1215798 A GB1215798 A GB 1215798A GB 36678/69 A GB36678/69 A GB 36678/69A GB 3667869 A GB3667869 A GB 3667869A GB 1215798 A GB1215798 A GB 1215798A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boom
- pulleys
- cables
- cable
- 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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
1,215,798. Jib cranes. HARNISCHFEGER CORP. 22 July, 1969 [25 July, 1968], No. 36678/69. Heading B8B. A crane boom B comprises telescopic base, intermediate, third and fourth sections 10, 12, 14, 16. The base section 10 is pivotally mounted for luffing and the boom B is supported by a cable system S extending between the boom tip 25 and a winch (not shown) on the crane frame. The system S comprises line 29a from the winch to pulley 30 and portions of cables 50, 52, 54 which form suspension cables respectively anchored adjacent the rear ends of boom sections 12, 14, 16 at points 12a, 14a, 16a after passing around sheaves 40, 42, 44. The cables 50, 52 are respectively anchored on pulleys 32, 34 after passing around pulleys 30, 32. The cable 54 is anchored at point 25. This arrange ment provides a compensating system when the boom B is extended. The suspension cables 50, 52, 54 can be individually changed in length for a particular crane design to vary the offset of the pulleys 30, 32, 34 from the sheaves 40, 42, 44 selectively to adjust the supporting effect of a suspension cable on its associated boom section as shown in Fig. 5. In a modification, Fig. 6 (not shown), an extra fall is provided between the pulleys 30, 32; 32, 34; 34, 36 by passing the cables 50, 52, 54 around the pulleys 32, 34, 36 and anchoring them on the pulleys 30, 32, 34.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74767368A | 1968-07-25 | 1968-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1215798A true GB1215798A (en) | 1970-12-16 |
Family
ID=25006150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36678/69A Expired GB1215798A (en) | 1968-07-25 | 1969-07-22 | Cranes having a telescopic boom with a compensating boom hoist cable system |
Country Status (4)
Country | Link |
---|---|
US (1) | US3534867A (en) |
DE (1) | DE1937274A1 (en) |
FR (1) | FR2013711A1 (en) |
GB (1) | GB1215798A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136753A (en) * | 1983-03-21 | 1984-09-26 | Donald Lacey Smith | Telescopic boom and conveyor apparatus |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3889818A (en) * | 1973-09-21 | 1975-06-17 | Carl G Wennerstrom | Extensible crane |
US3844418A (en) * | 1973-11-29 | 1974-10-29 | Case Co J I | Telescoping jib assembly |
US4039174A (en) * | 1976-03-31 | 1977-08-02 | Fordees Corporation | Reline tower for a metallurgical furnace |
JPS572508Y2 (en) * | 1978-08-11 | 1982-01-16 | ||
DE3030821C2 (en) * | 1979-08-17 | 1983-12-01 | Coles Cranes Ltd., Sunderland, Tyne and Wear | Telescopic boom rope guying |
US4352434A (en) * | 1980-05-01 | 1982-10-05 | Fmc Corporation | Pendant supported hydraulic extensible boom |
US4489838A (en) * | 1981-08-17 | 1984-12-25 | Fmc Corporation | Low droop multi-part pendant supported boom |
DE3137846C2 (en) * | 1981-09-23 | 1985-01-03 | Albert Böcker GmbH & Co KG, 4712 Werne | Telescopic boom with at least two telescopic sections |
US4468166A (en) * | 1982-07-08 | 1984-08-28 | Fmc Corporation | Apparatus for extending and retracting telescoping booms and pipelines |
DE3447095C2 (en) * | 1984-12-22 | 1995-04-06 | Krupp Ag Hoesch Krupp | Telescopic boom for cranes |
US4982853A (en) * | 1989-02-09 | 1991-01-08 | Hikoma Seisakusho Co., Ltd. | Reinforcement mechanism for multi-stage telescopic boom |
IL98944A0 (en) * | 1991-07-24 | 1992-07-15 | Hammer Mordechai | Device which widens and narrows for multiplying and transferring movement in space |
AU684467B2 (en) * | 1992-07-13 | 1997-12-18 | Mordechai Hammer | Extendible and retractable device |
US20090057636A1 (en) * | 2007-08-31 | 2009-03-05 | Tait Towers Inc. | Portable lift device and system |
US8684197B2 (en) * | 2009-05-01 | 2014-04-01 | Manitowoc Crane Companies, Llc | Crane with boom raising assist structure |
CN102979078B (en) * | 2012-11-22 | 2014-01-15 | 三一重工股份有限公司 | Cylinder driven lifting mechanism of dynamic compaction machine and dynamic compaction machine |
DE102015003982A1 (en) * | 2015-03-26 | 2016-09-29 | Liebherr-Werk Biberach Gmbh | crane tower |
WO2017192531A1 (en) * | 2016-05-02 | 2017-11-09 | Cameron International Corporation | Catwalk and crane system |
CN110240021B (en) * | 2019-06-28 | 2021-06-18 | 三一汽车起重机械有限公司 | Monitoring method, processor and system for cable in single-cylinder bolt type telescopic arm |
CN111377367B (en) * | 2020-04-22 | 2022-03-01 | 浙江三一装备有限公司 | Truss arm and crane |
US20230278238A1 (en) * | 2020-07-22 | 2023-09-07 | Hakusan Corporation | Long arm |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1163497A (en) * | 1915-07-28 | 1915-12-07 | Nils Engholm Andersen | Extension-boom. |
US1345304A (en) * | 1919-09-22 | 1920-06-29 | Zied Samuel | Derrick for vehicles |
-
1968
- 1968-07-25 US US747673A patent/US3534867A/en not_active Expired - Lifetime
-
1969
- 1969-07-22 DE DE19691937274 patent/DE1937274A1/en active Pending
- 1969-07-22 GB GB36678/69A patent/GB1215798A/en not_active Expired
- 1969-07-25 FR FR6925529A patent/FR2013711A1/fr not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136753A (en) * | 1983-03-21 | 1984-09-26 | Donald Lacey Smith | Telescopic boom and conveyor apparatus |
Also Published As
Publication number | Publication date |
---|---|
FR2013711A1 (en) | 1970-04-03 |
DE1937274A1 (en) | 1970-01-29 |
US3534867A (en) | 1970-10-20 |
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