| 摘要 |
PROBLEM TO BE SOLVED: To provide a back hoe attachment which dispenses with mounting/ demounting works and which has more safety in the exchanging works as compared with conventional back hoes and which can grip an objective material in a simple work without fitting a catching device when such a large stone or roots of trees that can not be scraped up by a bucket come out while earth and sand are excavated by the back hoe. SOLUTION: When the bucket of a back hoe rotates around a support point, a claw-shaped gripping device moves in the reverse direction against the rotary direction of the bucket and it can hold a material or remove it. When the back hoe is used for usual way, it is removed. The claw-shaped gripping device is fixed by a pin so as not to move. COPYRIGHT: (C)2004,JPO
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