The invention discloses a wearable lower-limb
rehabilitation walking aid mechanical device which comprises a
waist mechanism,
thigh bodies, hip joint mechanisms, shank bodies,
knee joint mechanisms,
ankle joint mechanisms, bandages and soles, the
waist mechanism comprises a back plate, a left waistband, a right waistband, limiting strips, triggers, a gear and racks, the limiting strips are recessed into rectangular grooves of the left waistband and the right waistband and fixed by bolts, the left waistband and the right waistband are inserted into sliding ways on two sides of the back plate, the front ends of the left waistband and the right waistband are connected with the racks, the gear is mounted on a rotating shaft of the middle of the back plate and meshed with the racks, the triggers are mounted on two sides of the back plate, so that the limiting strips are clamped, and each hip joint mechanism comprises a left connector, a right connector, a hip joint body, a
harmonic reducer, a bolt, a disk-type motor, a
thigh telescopic rod and a motor support. The mechanical device has the advantages that a whole mechanism is compact in design, space
utilization rate is high, the shortcomings of overlarge
exoskeleton size and clumsy action caused by a directly-connected mode of a traditional motor are overcome, a structure of a synchronous belt cannot be lubricated, transmission is reliable and stable, and maintenance cost is low.