Scissors fork type expansion device for suspended trolley

The invention discloses a scissors fork type expansion device for a suspended trolley. The scissors fork type expansion device comprises a mounting base. A driving component is fixedly connected to the mounting base. The driving component is rotatably provided with driving shafts. The driving shafts are connected with driving arms. The free ends of the driving arms are hinged to scissors fork assemblies. The driving shafts rotate to drive the driving arms to swing. The driving arms drive the scissors fork assemblies to stretch and retract. The driving component comprises a lead screw assemblyand a motor. The driving shafts are fixedly connected with the swing arms. The driving component of the scissors fork type expansion device is realized by combining the motor and the lead screw assembly. The motor drives a lead screw to do linear reciprocating motion, drives the swing arms to swing through linear motion of a lead screw nut and then drives scissors forks to stretch and retract. Thelead screw assembly can o