Manpower tricycle wheel avoiding reversing in uphill process

The invention belongs to the field of wheels and particularly relates to a manpower tricycle wheel avoiding reversing in the uphill process. The manpower tricycle wheel comprises a tricycle frame, a right rear wheel, a left rear wheel, sliding rings, fixed rings, fixed ring supports, a rotary shaft, fixed blocks, first telescopic rods, second telescopic rods, rails, guide blocks, square holes, annular grooves, first containing cavities and the like. A run-through round hole is formed in the end face of a fixed rod, and the fixed rod is fixedly installed on the tricycle frame; the rotary shaftpenetrates through the round hole formed in the fixed rod, and the two ends of the rotary shaft extend out of the round hole in the fixed rod at the same length; a run-through round hole is formed ina right installation board; and a run-through round hole is formed in a left installation board. Double-clutch control mechanisms are additionally arranged on flying wheels, the directions of wedge blocks on the double-clutch