PROBLEM TO BE SOLVED: To provide a crown of a hammer grab which is capable of obtaining a sufficient silencing effect and lowering a manufacturing cost and is excellent in durability.;SOLUTION: A crown 3 of the hammer grab includes: a swing bar 7 hung at a required height by a hanging cable body 2 from a crane; a crown head 8 suspended and connected to the swing bar 7; a cylindrical collar 9 externally fitted and held by the crown head 8 so as to be vertically moved; and a locking mechanism 10 provided over the crown head 8 and the collar 9 so as to hold the hammer grab elevated and lowered through a cable body for elevating/lowering operations by the crane to be locked and unlocked. The collar 9 comprises a cylindrical collar body 20 and a silencing member 21 which is separate from the collar body and is fixed to the bottom part of the collar body 20, and the collar body 20 and the silencing member 21 are formed of hard materials different from each other.;COPYRIGHT: (C)2012,JPO&INPIT
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