manual pull grab

它是一种能在各种恶劣环境下取代人力从事黄砂、煤炭、矿粉、散化肥等散货装卸的有效工 具。抓斗结构简单，启闭机构新颖，操作方便，适用于单卷筒起重机装卸各类散货。

Hand dumping (opening) clamshell grab is an efficient tool for loading and unloading sands, coal, mineral powder and bulk chemical fertilizer.

The mechanical structure for opening & closing is succinct and original. It is easy to use and especially works for the crane which has one hoisting drum.

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