Adjustable-trajectory limb health training device with sliding pair

The invention discloses an adjustable-trajectory limb health training device with a sliding pair. The adjustable-trajectory limb health training device with the sliding pair comprises a crank, a first connecting rod, a second connecting rod, a sliding block, a guide rail, a rack and a support, wherein one end of the crank is hinged to the rack to form a revolute pair; the other end of the crank is hinged to the first end of the first connecting rod to form a revolute pair; the tail end of the first connecting rod is hinged to the head end of the second connecting rod to form a revolute pair; the tail end of the second connecting rod is hinged to the sliding block to form a revolute pair; the sliding block and the guide rail form a sliding pair; the guide rail is fixedly arranged on the rack; the support is installed on the first connecting rod or the second connecting rod. The adjustable-trajectory limb health training device with the sliding pair is a variable-position limb health training device with the adjustable movement mode, which has the advantages of simple and compact structure and wide application range, can be installed on other rehabilitation and fitness machines and can be applied to the rehabilitation and the fitness of the upper/lower limb.