Chain transmission demonstration teaching tool for teaching

The invention discloses a chain transmission demonstration teaching tool for teaching, which comprises a baseplate, two trapezoid supports and a rotary frame formed by the combination of two polygonal frames with the same size, wherein the central axis points of the two polygonal frames are connected through a connecting pipe fitting; the two ends of the pipe fitting are respectively connected with the top ends of the supports through a first vertical bearing seat; every two corresponding vertexes of the two polygonal frames are connected through a cross beam; a hanging basket is arranged on each cross beam; a worm and gear reducer is arranged at one end of the baseplate; a hand wheel is mounted on the worm shaft of the worm and gear reducer; the worm shaft of the worm and gear reducer is connected with one end of the connecting pipe fitting through a transmission device; the hand wheel is rotated to drive the transmission device to perform transmission, so as to enable the rotary frame to rotate. According t