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As one of the important laboring tools in daily life, shovel can also play the role of prompt relief when theearthquakeor otherdisasters happen. The st-ructure of single pole in traditional spade has many problems. For example, the poorfirmness of gripe would cause that the force we apply to tools is not enough. Furthermore, when we have special needs, such as levering, it can not play its full role. The Power-assisted Spade’ is a new tool with a rotatable handle of‘L’shape which is easy to exert a force on objects, helping users to grasp it more firmly.
Dalian Nationalities University