GB1344110A - Constant load position telescoping boom - Google Patents
Constant load position telescoping boomInfo
- Publication number
- GB1344110A GB1344110A GB2418371A GB2418371A GB1344110A GB 1344110 A GB1344110 A GB 1344110A GB 2418371 A GB2418371 A GB 2418371A GB 2418371 A GB2418371 A GB 2418371A GB 1344110 A GB1344110 A GB 1344110A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cable
- pulley
- boom
- around
- pulleys
- 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
- 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
1344110 Jib cranes CATERPILLAR TRACTOR CO 19 April 1971 [9 March 1970] 24183/71 Heading B8B A telescoping boom mountable on a load lifting device and with which a constant load position to boom relationship is achieved comprises an outer boom member 17 which in use is fixed to said device and an inner boom member 18 movable relative to the member 17 by means of an hydraulic ram 16, a load hoisting cable 19 being attached to the member 17 at anchor point 27 and extending around pulleys 29, 31, 32 attached to the movable member 18 and also around a pulley 33 connected to a load supporting hook 21 and being attached at its other end to a winch (not shown). On extension of member 18 by means of the ram 16 cable is taken up around pulley 32 and at the same time an equal length of cable is payed out around pulleys 29, 31 such that the length of cable between pulleys 31, 32 and the pulley 33 remains the same. Similarly if member 18 is retracted cable is payed out around pulley 32 and taken up around pulleys 29, 31. Alternatively, the inner boom member may be fixedly mounted in use, and the outer boom member movable relative thereto.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1770070A | 1970-03-09 | 1970-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1344110A true GB1344110A (en) | 1974-01-16 |
Family
ID=21784080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2418371A Expired GB1344110A (en) | 1970-03-09 | 1971-04-19 | Constant load position telescoping boom |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1344110A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2536733A1 (en) * | 1982-11-26 | 1984-06-01 | Serge Montgon | CRANE ARROW WITH VARIABLE RANGE, WITH AUTOMATIC BALANCING DEVICE |
| CN116040508A (en) * | 2022-12-02 | 2023-05-02 | 河南骏通车辆有限公司 | Rope extension structure, telescopic boom crane and hoisting method thereof |
-
1971
- 1971-04-19 GB GB2418371A patent/GB1344110A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2536733A1 (en) * | 1982-11-26 | 1984-06-01 | Serge Montgon | CRANE ARROW WITH VARIABLE RANGE, WITH AUTOMATIC BALANCING DEVICE |
| EP0110786A1 (en) * | 1982-11-26 | 1984-06-13 | S.M.S., Société Montgon Systèmes | Variable reach crane jib with automatic counterbalancing device |
| CN116040508A (en) * | 2022-12-02 | 2023-05-02 | 河南骏通车辆有限公司 | Rope extension structure, telescopic boom crane and hoisting method thereof |
| CN116040508B (en) * | 2022-12-02 | 2023-11-03 | 河南骏通车辆有限公司 | Rope extension structure, telescopic boom crane and hoisting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |