Portable connecting rod plotter teaching aid

The portable connecting rod plotter comprises a rack, a driving piece set, a driven piece set, a connecting rod and a plotting rod, and the rack is composed of a base, a frame rod, a vertical supporting base and a linear rail; the driving part set is composed of a hand wheel, a coupler, a first sliding block, a first shaft and a driving side link, the hand wheel is matched with the first shaft through the coupler, and power is provided for the device by rotating the hand wheel; the driven piece set is composed of a second sliding block, a driven frame connecting rod and a fourth shaft, and thesecond sliding block is matched with the driven frame connecting rod through the fourth shaft. One end of the connecting rod is matched with the driving side link through a second shaft; the other end of the connecting rod is matched with the driven side link through a third shaft; the length of each rod in the mechanism is controlled by adjusting the positions of the shafts on the rods, deformation of the hinge four-rod