| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage and deformation of a suspension hook in excavation work without causing adverse effect such as reduction in bucket capacity and an increase in excavation resistance. SOLUTION: A hook bracket 26 is installed in a back face part of a bucket 21 together with a bucket bracket 24 for installing the bucket 21 on the arm tip, and the suspension hook 21 is installed on this hook bracket 26 so as to be rotatable around a hook support pin 28. This suspension hook 21 is set in a suspension position suspended by dead weight in suspension work, and is constituted so as to be stored in the hook bracket 26 along a bucket back face by rotating upward from this suspension position in unused time. COPYRIGHT: (C)2007,JPO&INPIT
|
