为了贯彻执行毛主席“备战、备荒、为人民”的方针,适应“干打垒”施工技术的需要,国家建委五局建筑机械修造厂四连的广大工人和技术人员,发扬敢想、敢干的革命精神,试制成功了一台电动夯墙机。该机采用倔心连杆机构和弹簧振动原理,带动夯锤夯实土墙,具有体积小、重量 In order to implement Chairman Mao’s principle of “preparation, preparation for waste, and serving the people” and adapt to the requirements of construction techniques, the majority of workers and technicians of the four-building construction machinery repair factory of the State Construction and Construction Commission have carried forward their courage. The revolutionary spirit of thinking and daring to do it successfully produced an electric smashing machine. The machine adopts the core link mechanism and the principle of spring vibration, which drives the hammer to compact the earth wall. It has a small size and weight.