Human lower limb exoskeleton assisting in load bearing

The invention discloses a human lower limb exoskeleton assisting in load bearing. The human lower limb exoskeleton is characterized in that the exoskeleton is of a central symmetry structure; each side is composed of a front branch chain and a rear branch chain; each rear branch chain comprises a backpack module, a rear connection rod and an energy storage module; each energy storage module comprises an energy storage module upper connection shaft, a guide cylinder upper connection rod, a guide cylinder lower connection rod, a guide cylinder upper end cover, a controllable linear damper, a long spring baffle, a long spring, a short spring baffle, a short spring, a short spring guide rod, a short spring check block, an energy storage module lower connection shaft and an energy storage module shaft sleeve; the guide cylinder upper connection rods and the guide cylinder lower connection rods form a prismatic pair through cooperation of the guide cylinder upper end covers and the guide cylinder upper connection rods; the guide cylinder upper end covers are connected with the guide cylinder lower connection rods; the long spring baffles are installed at the tail ends of the guide cylinder upper connection rods; the long springs are installed in the guide cylinder lower connection rods; the upper ends of the short spring guide rods are connected with the short spring baffles, and the short spring check blocks are installed at the lower ends of the short spring guide rods; and the short spring guide rods penetrate the short springs from the centers till the short springs make contact with the short spring baffles so that pre-tightening force can be applied.