| 摘要 |
PROBLEM TO BE SOLVED: To prevent a lifting hook from coming off together with a bucket during a change of the bucket when the lifting hook is included together with a bucket for use as an attachment for a work machine.SOLUTION: A work machine comprises: an undercarriage; a revolving upper machinery rotatably mounted on the undercarriage; a work unit, one end of which is attached to the front portion of the revolving upper machinery and which comprises either a boom or an arm and an attachment; and a bucket cylinder for elevating motion of the attachment. A bucket link device is provided between the bucket cylinder and the attachment, and a lifting hook is provided in such a way that it can be housed into and taken out of the bucket link. Two types of stopper guides 51a and 52a are placed apart from each other, in the vicinity of a position where a fixing pin 41 of the attachment is supported inside the bucket link 12 which connects the bucket cylinder 7c and the attachment 4c. |
