The invention relates to a
lumbar traction device driven by pneumatic muscles. The
lumbar traction device comprises an
upper limb fixing frame and a
waist fixing frame, wherein a rotating shaft is connected to the
upper limb fixing frame, and is arranged on the
waist fixing frame in an inserting manner; a
crotch binding belt is connected to the
waist fixing frame; and a plurality of pneumatic muscles are connected to the
upper limb fixing frame, and are connected with a shoulder binding belt. According to the
lumbar traction device disclosed by the invention, the pneumatic muscles are synchronously inflated and shortened in the direction away from the waist fixing frame, so that the shoulder binding belt and the
crotch binding belt can cooperate to perform stretching and traction on a
human body; a flexible steel wire is arranged on the rotating shaft in a sleeving manner, and is twined on the rotating shaft spirally; the pneumatic muscles and tension springs are connected to the waistfixing frame; one of the pneumatic muscles and the corresponding tension spring are connected with two ends of the flexible steel wire; the pneumatic muscles are inflated and shortened, so that the rotating shaft is driven by the flexible steel wire to synchronously rotate, the tension springs are synchronously stretched, and the upper limb fixing frame and the waist fixing frame can cooperate toperform rotation and traction on the
human body; and through the elastic acting force of the tension springs, after rotation and traction are completed, the upper limb fixing frame is returned.