Title:
RING LIFT CRANE
Document Type and Number:
WIPO Patent Application WO1999048793
Kind Code:
A3
Abstract:
To move said crane into different operating modes the uprights (17, 17') can be lifted in relation to the base apparatus and joined in different manners to the cross-bars (26, 27) in a non-positive fit. In the initial position the positive fit between the uprights (17, 17') and the cross-bars (26, 27) presents a predeterminable play (79, 79'). To permit the rotating movement of the crane gantry the invention provides for several trolleys (18) of identical structure which have two axles and wheels fixed to same. The trolleys can be connected in a positive fit with both the uprights (17, 17') and the ring or a ring segment (20a, 20e).
Inventors:
KNECHT ALEXANDER (DE)
KRETSCHMER MANFRED (DE)
BIERMANN MICHAEL (DE)
FRANKENBERGER RALF (DE)
KRETSCHMER MANFRED (DE)
BIERMANN MICHAEL (DE)
FRANKENBERGER RALF (DE)
Application Number:
PCT/DE1999/000955
Publication Date:
March 16, 2000
Filing Date:
March 25, 1999
Export Citation:
Assignee:
MANNESMANN AG (DE)
KNECHT ALEXANDER (DE)
KRETSCHMER MANFRED (DE)
BIERMANN MICHAEL (DE)
FRANKENBERGER RALF (DE)
KNECHT ALEXANDER (DE)
KRETSCHMER MANFRED (DE)
BIERMANN MICHAEL (DE)
FRANKENBERGER RALF (DE)
International Classes:
B66C23/36; B66C23/74; B66C23/76; B66C23/78; B66C23/84; (IPC1-7): B66C23/84; B66C23/74; B66C23/36; B66C23/76
Foreign References:
| US4103783A | 1978-08-01 | |||
| US4336889A | 1982-06-29 | |||
| US4196816A | 1980-04-08 | |||
| DE2336364A1 | 1975-02-06 | |||
| US5580189A | 1996-12-03 |
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