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ＴＹ２２０推土机组合式铲刀是由总装备部工程兵驻西安地区军事代表室和陕西黄河工程机械集团共同研制开发的ＴＹ２２０推土机专用工作装置，它具有推土、分土两种工作状态和方便公路、铁路运输的运输状态，铲刀各状态间的转换可在任何场地条件下由人工灵活进行，且有较强的适
TY220 bulldozer combined blade is the TY220 bulldozer dedicated working device jointly developed by the General Armament Department of the Corps of Engineers in Xi’an and Shaanxi Yellow River Construction Machinery Group. It has two working conditions of earth and soil separation and convenient road, rail Transportation of transport state, the switch between the state of the blade in any venue conditions by the artificial flexibility, and has a strong fitness