FR2298505A1 - Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower - Google Patents
Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to towerInfo
- Publication number
- FR2298505A1 FR2298505A1 FR7501914A FR7501914A FR2298505A1 FR 2298505 A1 FR2298505 A1 FR 2298505A1 FR 7501914 A FR7501914 A FR 7501914A FR 7501914 A FR7501914 A FR 7501914A FR 2298505 A1 FR2298505 A1 FR 2298505A1
- Authority
- FR
- France
- Prior art keywords
- tower
- section
- mobile
- crab
- suspended below
- 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.)
- Granted
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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The telescopic jib for use with a tower crane has a mobile section(3) suspended below and sliding in relation to a fixed section (2), mounted on the tower(1), by means of one or more sets of rollers, so that in the retracted position its rear end is adjacent to the lower. The lifting crab(12) travels for the whole length of the mobile jib section, the movements of the two being so co-ordinated that the crab travels over the entire outreach range of the crane without leaving the mobile section. There can be a crab travel winch at the base of the tower, from which two ropes are reeved round pulleys at opposite ends of the jib sections to opposite sides of the crab.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7501914A FR2298505A1 (en) | 1975-01-22 | 1975-01-22 | Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7501914A FR2298505A1 (en) | 1975-01-22 | 1975-01-22 | Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2298505A1 true FR2298505A1 (en) | 1976-08-20 |
FR2298505B3 FR2298505B3 (en) | 1977-10-21 |
Family
ID=9150143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7501914A Granted FR2298505A1 (en) | 1975-01-22 | 1975-01-22 | Tower crane telescopic jib - has grab travelling on mobile section suspended below section fixed to tower |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2298505A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0296383A1 (en) * | 1987-06-04 | 1988-12-28 | Liebherr-Werk Biberach GmbH | Turnable tower crane |
-
1975
- 1975-01-22 FR FR7501914A patent/FR2298505A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0296383A1 (en) * | 1987-06-04 | 1988-12-28 | Liebherr-Werk Biberach GmbH | Turnable tower crane |
Also Published As
Publication number | Publication date |
---|---|
FR2298505B3 (en) | 1977-10-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |