GB1458506A - - Google Patents
Info
- Publication number
- GB1458506A GB1458506A GB852673A GB852673A GB1458506A GB 1458506 A GB1458506 A GB 1458506A GB 852673 A GB852673 A GB 852673A GB 852673 A GB852673 A GB 852673A GB 1458506 A GB1458506 A GB 1458506A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boom
- arm
- rod
- section
- pivoted
- 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
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Jib Cranes (AREA)
Abstract
1458506 Luffing arm apparatus SIMON ENG DUDLEY Ltd 5 Feb 1974 [21 Feb 1973] 8526/73 Heading B8H In an apparatus wherein a cage is mounted on an articulated luffable boom, a mechanical interlock prevents the cage from reaching an unstable condition and also slows down the movement of the boom as it approaches said unstable condition or the actuators, for effecting the luffing, approach the limit of their travel. The boom comprises a first section 10 pivotally mounted on a turntable 9, itself mounted on a vehicle (not shown), a second section 11 pivotally mounted on the first section and an auxiliary boom 12 pivoted to the second section and pivotally mounting the cage 13. Levelling links 14, 17, 19 extending parallel with the respective boom sections 10, 11, 12, maintain the cage level for all inclinations of the boom sections and hydraulic actuators 20, 20a effect the movements of the boom sections. The actuator 20a operates a rod 21 connected to the second boom section. A rod 22 connected to the rod 21 is pivoted at 23 and through links 24, 25 transmits the movement of the second boom section to a common link 26 to which the levelling rod 14 is also connected to transmit the movement of the first boom. The link 26 is coupled by a further link 31 to an arm 32 pivoted on the first boom section and coupled by a rod 34 to a further arm 32a also pivoted on the first boom section. The rod 34 carries stops A, B, C, D which are displaced therewith on movement of the first or second boom section singularly or jointly so that when the cage approaches an unstable position they engage control levers 50, 51, controlling the movement of the first and second boom sections respectively, to move same to a non-operative position. A further link 27, coupled to the common link 26, is coupled to an arm 28 pivoted on the first boom section and having abutments 29, 29a for engagement with an arm 35 at the extremes of operation of the actuator 20a. The arm 35 is coupled by a rod 38 to an arm 36 spring biased into a neutral position. Stops E, F are mounted on the rod 38 and act on control lever 51 to move same to a non-operative position as the actuator 20a approaches its extreme positions. A further arm 39, also spring biased into a neutral position and pivoted about a common pivot with arm 36, is coupled by a rod 41 to an arm 40 pivoted about a common pivot with the arm 32a. The levelling link 14 carries stops X, Y which in the extreme positions of the actuator 20 engage the arm 39 to move stops G, H on the rod 41 into engagement with the control lever 50 to move same into a non-operative position
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB852673A GB1458506A (en) | 1973-02-21 | 1973-02-21 | |
CA192,041A CA992470A (en) | 1973-02-21 | 1974-02-06 | Hydraulically elevatable platforms |
US440552A US3891056A (en) | 1973-02-21 | 1974-02-07 | Hydraulically elevatable platforms |
FI372/74A FI53564C (en) | 1973-02-21 | 1974-02-11 | ANORDNING FOER HYDRAULISKT LYFTBARA PLATTFORMER |
SE7402043A SE390721B (en) | 1973-02-21 | 1974-02-15 | INSPECTION AND ASSEMBLY CRANE |
BE141027A BE811162A (en) | 1973-02-21 | 1974-02-18 | ACCESS EQUIPMENT INCLUDING A STRUCTURE OF ARTICULATED ARROWS |
DE19742408405 DE2408405A1 (en) | 1973-02-21 | 1974-02-21 | HYDRAULICALLY OPERATED LIFTING DEVICE |
AT142874A AT351706B (en) | 1973-02-21 | 1974-02-21 | HYDRAULICALLY OPERATED LIFTING DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB852673A GB1458506A (en) | 1973-02-21 | 1973-02-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1458506A true GB1458506A (en) | 1976-12-15 |
Family
ID=9854129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB852673A Expired GB1458506A (en) | 1973-02-21 | 1973-02-21 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3891056A (en) |
AT (1) | AT351706B (en) |
BE (1) | BE811162A (en) |
CA (1) | CA992470A (en) |
DE (1) | DE2408405A1 (en) |
FI (1) | FI53564C (en) |
GB (1) | GB1458506A (en) |
SE (1) | SE390721B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0047726A2 (en) * | 1980-09-08 | 1982-03-17 | Ab Kranlyft | A safety device in hydraulically operated working-platform elevators |
GB2116939A (en) * | 1982-02-25 | 1983-10-05 | Jacques Tranchero | All apparatus transportable on a motor vehicle and capable of raising a working compartment to different heights |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT8005120A0 (en) * | 1980-02-20 | 1980-02-20 | Cella Spa | LIMITING DEVICE OF A LIFTING EQUIPMENT WITH A TELESCOPIC OR ARTICULATED AND TELESCOPIC ARM. |
EP0073598B1 (en) * | 1981-08-20 | 1985-12-27 | University Of Bradford | Hinge mechanisms |
GB8304329D0 (en) * | 1983-02-16 | 1983-03-23 | Aerial Access Equip | Control mechanism for access equipment |
GB2144098A (en) * | 1983-07-30 | 1985-02-27 | Simon Eng Dudley Ltd | Hydraulically elevatable access equipment |
IT1182578B (en) * | 1985-09-30 | 1987-10-05 | Fassi Gru Idrauliche Spa | HIGHLY MANEUVERABLE ELECTRICALLY INSULATED CRANE FOR LIFTING AND ACCESSING OPERATORS UNDER VOLTAGE ELECTRIC AERIAL LINES |
US4754840B1 (en) * | 1987-10-07 | 1997-01-14 | Jlg Ind Inc | Leveling assembly for work platforms on articulating booms |
US5082085A (en) * | 1990-08-30 | 1992-01-21 | Up-Right, Inc. | Platform leveling apparatus |
US5249643A (en) * | 1992-04-03 | 1993-10-05 | Kidde Industries, Inc. | Vehicular self-propelled aerial work platform and telescoping parallelogram boom therefor |
GB9221127D0 (en) * | 1992-10-07 | 1992-11-18 | Atomic Energy Authority Uk | A hydraulic manipulator |
US5704498A (en) * | 1996-09-25 | 1998-01-06 | Kidde Industries, Inc. | Transportable crane |
DE29708415U1 (en) * | 1997-05-13 | 1997-07-24 | Michaelis Maschinenbau GmbH, 28879 Grasberg | Lifting platform |
US6390312B1 (en) | 1998-02-27 | 2002-05-21 | Jlg Industries, Inc. | Lift structures and lifting arrangement therefor |
US6488161B1 (en) | 2000-05-02 | 2002-12-03 | Jlg Industries, Inc. | Boom mechanism |
DE10144501A1 (en) * | 2001-09-11 | 2003-04-03 | Teupen Maschbau Gmbh | Aerial work platform with hydraulic control |
EP1896682B1 (en) * | 2005-06-16 | 2013-05-01 | Barjoh PTY Ltd. | Vehicle access system |
US8690514B2 (en) * | 2010-01-22 | 2014-04-08 | Martin A. Marola | Heavy duty vehicle recovery system |
RU2555073C2 (en) * | 2013-07-01 | 2015-07-10 | Николай Евгеньевич Староверов | Device for part rotation by angle up to 330 degrees (versions) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2936847A (en) * | 1959-02-02 | 1960-05-17 | Jay M Eitel | Mobile lifting equipment with extensible boom structure |
US3035712A (en) * | 1960-02-17 | 1962-05-22 | Westinghouse Bremsen Gmbh | Overload safety control apparatus for cranes |
US3087581A (en) * | 1960-03-07 | 1963-04-30 | Pitman Mfg Company | Fiberglas structural member and method of making same |
DE1456431A1 (en) * | 1965-04-01 | 1969-02-27 | Comitetul De Stat Pentru Cultu | Device for displaying the position of the head in cranes with articulated arms, especially in film camera cranes |
-
1973
- 1973-02-21 GB GB852673A patent/GB1458506A/en not_active Expired
-
1974
- 1974-02-06 CA CA192,041A patent/CA992470A/en not_active Expired
- 1974-02-07 US US440552A patent/US3891056A/en not_active Expired - Lifetime
- 1974-02-11 FI FI372/74A patent/FI53564C/en active
- 1974-02-15 SE SE7402043A patent/SE390721B/en unknown
- 1974-02-18 BE BE141027A patent/BE811162A/en unknown
- 1974-02-21 DE DE19742408405 patent/DE2408405A1/en not_active Withdrawn
- 1974-02-21 AT AT142874A patent/AT351706B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0047726A2 (en) * | 1980-09-08 | 1982-03-17 | Ab Kranlyft | A safety device in hydraulically operated working-platform elevators |
EP0047726A3 (en) * | 1980-09-08 | 1982-05-12 | Ab Kranlyft | A safety device in hydraulically operated working-platform elevators |
GB2116939A (en) * | 1982-02-25 | 1983-10-05 | Jacques Tranchero | All apparatus transportable on a motor vehicle and capable of raising a working compartment to different heights |
Also Published As
Publication number | Publication date |
---|---|
US3891056A (en) | 1975-06-24 |
AT351706B (en) | 1979-08-10 |
ATA142874A (en) | 1979-01-15 |
BE811162A (en) | 1974-06-17 |
CA992470A (en) | 1976-07-06 |
FI53564B (en) | 1978-02-28 |
DE2408405A1 (en) | 1974-08-22 |
SE390721B (en) | 1977-01-17 |
FI53564C (en) | 1978-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |