GB1405387A - Telescopic boom - Google Patents
Telescopic boomInfo
- Publication number
- GB1405387A GB1405387A GB4300773A GB4300773A GB1405387A GB 1405387 A GB1405387 A GB 1405387A GB 4300773 A GB4300773 A GB 4300773A GB 4300773 A GB4300773 A GB 4300773A GB 1405387 A GB1405387 A GB 1405387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- section
- cylinder
- trunnion
- sept
- control valve
- 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
- 238000010276 construction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
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
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
-
- 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
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
1405387 Telescopic booms HARNISCHFEGER CORP 13 Sept 1973 [18 Sept 1972] 43007/73 Heading B8B A hollow, telescopic boom, for example on a crane, Fig. 1 (not shown), comprises a base section 20, inner mid section 21, intermediate mid section 22, outer mid section 23, fly section 24 and a manual section 25, respectively extended and retracted by corresponding cylinders 41, 42, 43, 44, 45, of identical construction (apart from size). The cylinder 43 has a trunnion 68 by which it is connected to a trunnion mount 69 on section 23, its cylinder rod 52 having a trunnion 70 by which it is connected to a trunnion mount 71 on section 22. The rod 52 of the cylinder 43 has a remotely operable control valve 67 connected by an hydraulic fluid hose 149C to adjacent control valve 67C on cylinder 44 and arranged in a loop within section 23. Fig. 9 (not shown) illustrates the hydraulic control circuit. The cylinders 41 to 45 are progressively smaller in size.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00289986A US3804262A (en) | 1972-09-18 | 1972-09-18 | Telescopic boom |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1405387A true GB1405387A (en) | 1975-09-10 |
Family
ID=23114037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4300773A Expired GB1405387A (en) | 1972-09-18 | 1973-09-13 | Telescopic boom |
Country Status (14)
Country | Link |
---|---|
US (1) | US3804262A (en) |
JP (1) | JPS4970359A (en) |
BR (1) | BR7307240D0 (en) |
CA (1) | CA976917A (en) |
CH (1) | CH560648A5 (en) |
DD (1) | DD106613A5 (en) |
DE (1) | DE2346004A1 (en) |
ES (1) | ES418852A1 (en) |
FR (1) | FR2200184B3 (en) |
GB (1) | GB1405387A (en) |
IT (1) | IT994275B (en) |
NL (1) | NL7312853A (en) |
SE (1) | SE394102B (en) |
ZA (1) | ZA737240B (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE402003C (en) * | 1976-06-23 | 1982-02-22 | Jonsereds Fabrikers Ab | DEVICE FOR LOADING DEVICES WITH TELESCOPICALLY EXTENDABLE CRANE ARM AND WITH HYDRAULIC CABLES BORN BY THE CRANE ARM |
GB2263270B (en) * | 1992-01-20 | 1995-01-11 | D J Ind Ltd | Load handling apparatus |
SE501102C2 (en) * | 1993-04-26 | 1994-11-14 | Hiab Ab | Extendable crane arm |
US5695082A (en) * | 1996-04-08 | 1997-12-09 | Pioneer Engineering | Crane having a readily removable outer boom section |
DE10003058A1 (en) * | 2000-01-25 | 2001-07-26 | Macmoter Spa | Pipe layer has jib mounted on turntable on body of machine so that it can swivel about vertical axis |
ITTO20030957A1 (en) * | 2003-11-28 | 2005-05-29 | Cnh Italia Spa | TELESCOPIC LIFT ARM. |
SI2147174T1 (en) * | 2007-04-16 | 2017-11-30 | Falck Schmidt Defence System A/S | Telescoping mast |
ITMO20120312A1 (en) * | 2012-12-20 | 2014-06-20 | Cnh Italia Spa | TELESCOPIC ARM. |
US10533585B2 (en) | 2015-11-16 | 2020-01-14 | Saab Ab | Telescopic device and method for operating a telescopic device |
US10889473B2 (en) * | 2016-12-09 | 2021-01-12 | Fassi Gru S.P.A. | Load crane main boom |
US20180273352A1 (en) * | 2017-03-22 | 2018-09-27 | Wetherell Mfg Co. | Sequential piggyback cylinders for extendable boom crane |
DE102017127973A1 (en) | 2017-11-27 | 2019-05-29 | Liebherr-Werk Ehingen Gmbh | Telescopic boom for a crane and crane with a corresponding telescopic boom |
IT201800004537A1 (en) * | 2018-04-16 | 2019-10-16 | AERIAL PLATFORM | |
CN109368512B (en) * | 2018-12-25 | 2024-02-20 | 西京学院 | Pulley block range-extending three-stage electric cylinder |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3300060A (en) * | 1965-02-03 | 1967-01-24 | Pettibone Mulliken Corp | Booms with sequential hydraulic extension |
US3478894A (en) * | 1967-11-27 | 1969-11-18 | Jeffrey Galion Inc | Extensible and retractable boom construction for cranes |
US3481489A (en) * | 1967-12-05 | 1969-12-02 | Robert E Stauffer | Means for extending and retracting boom sections of a crane |
US3489294A (en) * | 1968-04-25 | 1970-01-13 | Bucyrus Erie Co | Load limit control for hoisting equipment |
US3633460A (en) * | 1968-12-13 | 1972-01-11 | Tadano Tekkosho Kk | Extension means of a multistage extensible boom |
US3605561A (en) * | 1969-12-22 | 1971-09-20 | Pettibone Corp | One handle sequence selecting valving for crowd cylinders |
US3658189A (en) * | 1970-01-06 | 1972-04-25 | American Hoist & Derrick Co | Hydraulic extensible boom structure |
US3666125A (en) * | 1970-09-10 | 1972-05-30 | Warner Swasey Co | Boom assembly |
US3708937A (en) * | 1970-09-28 | 1973-01-09 | Kidde & Co Walter | Trapezoidal telescoping crane boom |
US3736710A (en) * | 1970-12-03 | 1973-06-05 | Kidde & Co Walter | Four-section fully hydraulically operated crane boom having three individually supported single piston rams contained within fly section |
-
1972
- 1972-09-18 US US00289986A patent/US3804262A/en not_active Expired - Lifetime
-
1973
- 1973-08-30 CA CA179,972A patent/CA976917A/en not_active Expired
- 1973-09-11 ZA ZA737240A patent/ZA737240B/en unknown
- 1973-09-12 DE DE19732346004 patent/DE2346004A1/en active Pending
- 1973-09-13 GB GB4300773A patent/GB1405387A/en not_active Expired
- 1973-09-14 SE SE7312566A patent/SE394102B/en unknown
- 1973-09-14 CH CH1326673A patent/CH560648A5/xx not_active IP Right Cessation
- 1973-09-17 IT IT52557/73A patent/IT994275B/en active
- 1973-09-18 FR FR7333436A patent/FR2200184B3/fr not_active Expired
- 1973-09-18 JP JP10460673A patent/JPS4970359A/ja active Pending
- 1973-09-18 DD DD173620A patent/DD106613A5/xx unknown
- 1973-09-18 NL NL7312853A patent/NL7312853A/xx unknown
- 1973-09-18 BR BR7240/73A patent/BR7307240D0/en unknown
- 1973-09-18 ES ES418852A patent/ES418852A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ZA737240B (en) | 1974-10-30 |
ES418852A1 (en) | 1976-02-16 |
CH560648A5 (en) | 1975-04-15 |
FR2200184B3 (en) | 1976-08-20 |
NL7312853A (en) | 1974-03-20 |
CA976917A (en) | 1975-10-28 |
DD106613A5 (en) | 1974-06-20 |
IT994275B (en) | 1975-10-20 |
SE394102B (en) | 1977-06-06 |
FR2200184A1 (en) | 1974-04-19 |
JPS4970359A (en) | 1974-07-08 |
BR7307240D0 (en) | 1974-06-27 |
DE2346004A1 (en) | 1974-03-28 |
US3804262A (en) | 1974-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |