Mechanical spine structure of exoskeleton robot

The invention discloses a mechanical spine structure of exoskeleton robot. The mechanical spine structure of exoskeleton robot comprises an upper support frame (1), a bending length compensation device (13), a mechanical spine (4) and a drive device (9), wherein the upper support frame (1) is provided with shoulder sensor points (14); the bending length compensation device (13) comprises a sliding sleeve (2) and a sliding frame (3); the mechanical spine (4) comprises a plurality of joints (5); the joints (5) are provided with connecting shafts (6), external side steel control rope through holes (7), internal side steel control rope through holes (10) and spine sensor points (12); the drive device (9) is provided with external side steel control ropes (8) and internal side steel control ropes (11). The mechanical spine structure of exoskeleton robot has the advantages that the device can be used for replacing lower limbs of a patient in order to support the body and help the patient to move, meanwhile, the functions of supporting and matching with the back bending can be achieved at the same time, therefore people can bend down freely when wearing the exoskeleton.