Two degrees of freedom moving planar parallel mechanism

This invention belongs to industry robot field and provides a two free degree plane parallel structure, which comprises fixed platform and moving platform and the moving chain composed of slide block and connection bar. The fixed platform comprises two vertical guide rails. The connection plate connects the drive slide block and passive block. The kinematic pair between slide blocks, drive slide block, passive block and fixed platform is moving pair and other kinematic pair between the rest parts is rotation pair.