Time of portable type crane truck tune type boom

摘要

(57) Abstract Objective Containment relief boom firmly in standing up attitudeIt does, try front visibility to be able to improve. Constitution In revolving superstructure 4 of hull 1 rebohuremu 7 installationThe ke, to concatenate relief boom 10 to this rebohuremu 7, the soIn relief boom extending 10 and rebohuremu 7, relief shirinda 12 is concatenated. In aforementioned relief boom 10 concatenated of a L dieIt locks mu 24, locking arm 23 in the time tune boom 20To do, this arm to concatenate 23 and aforementioned concatenated arm 24, the soConcatenated arm 24 and extending to, the time tune boom 20 crookedness shirinConcatenating da 26, when storing the time tune boom 20 relief boomTo try to be located to the lower part of 10, aforementioned relief boom 10Extending to rebohuremu 7, fitting lock pin 16, reliefContainment boom 10 in standing up attitude.