EP 0334187 B1 19911016 - MOBILE TELESCOPIC JIB CRANE
Title (en)
MOBILE TELESCOPIC JIB CRANE
Publication
Application
Priority
- DE 3809790 A 19880323
- DE 3812032 A 19880411
- DE 3840408 A 19881130
Abstract (en)
[origin: JPH028196A] PURPOSE: To simplify a guy of a telescopic boom by arranging a winch and a boom fixing point on both sides of the telescopic boom, and pivoting the other end of a hydraulic cylinder having one end pivoted to a base box near the middle of the pivotal axis of a guying yoke and the pivotal axis of the telescopic boom by the guying yoke. CONSTITUTION: A guide rope 28 extending from a winch 6 is adjacent to the pivotal axis of a telescopic boom 4 through a pulley 13, a pulley of a block 26 and also a pulley 14 to be fixed to a fixing point 29 set on the opposite side of the winch 6. In a hydraulic cylinder 16 for operating a guying yoke 11, one end is pivoted to the guying yoke 11, and the other end is pivoted by a hinge to a base box 3 in the middle of the pivotal axis of the telescopic boom 4 and a horizontal pivot 12 for pivoting the guying yoke 11 to the base box 3. By this constitution, a guy of the telescopic boom can be simplified.
IPC 1-7
IPC 8 full level
B66C 23/42 (2006.01); B66C 23/687 (2006.01); B66C 23/82 (2006.01)
CPC (source: EP US)
B66C 23/42 (2013.01 - EP US); B66C 23/823 (2013.01 - EP US)
Designated contracting state (EPC)
FR GB IT
DOCDB simple family (publication)
EP 0334187 A1 19890927; EP 0334187 B1 19911016; JP H028196 A 19900111; US 4976361 A 19901211
DOCDB simple family (application)
EP 89104602 A 19890315; JP 7158989 A 19890323; US 32788789 A 19890323