| 摘要 |
<p>The invention provides a clamshell grab bucket, wherein the weight of the grab bucket is reduced as much as possible to increase the capacity of sands dug by the grab bucket on the premise that the strength of the grab bucket is not damaged at all. A reinforcing plate (34) is welded in such a way that the plate surface of the reinforcing plate abuts against the end surfaces of a bottom plate (28) and a side plate (29) from the rear edge of the bottom plate (28) to a bottom plate vicinity at the rear edge of the side plate (29). The two ends of the part (34a) of the reinforcing plate (34), welded on the bottom plate (28), are extended to form a part (34b) welded on the side plate (29). In this way, the corners (34c) of the bottom plate (28) and the side plate (29) are in an arc shape.</p> |
