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井架的底部支承结构由江苏理工大学专利事务所代理的“井架的底部支承结构”是升降运输机械的配套机架装置．主要用于建筑业的垂直运送．该装置是在井架的底部设置底盘支腿和撑杆，形成一个井架的独立结构．这种独立结构免除了施工时必须由钢绳向四周宽阔地域紧固井架．因...
Bottom support structure of derrick The “bottom support structure of derrick” which is authorized by the patent office of Jiangsu Polytechnic University is the supporting rack device of lifting transport machinery. Mainly used for vertical transport of the construction industry. The device is provided at the bottom of the derrick chassis legs and struts, forming a separate derrick structure. This independent structure eliminates the need to tighten the derrick from the steel cord to a wide area around the construction site. because...