Construction method for dismantling tower crane by use of small hoisting equipment

The invention discloses a construction method for dismantling a tower crane by use of small hoisting equipment, belonging to the field of construction technology of hoisting machinery. The tower crane is dismantled to a height lower than the buildings on the two sides of the tower crane in a self-dismantling manner; binding slings are arranged at corresponding suspension points of a suspension member by use of the building beams or columns on the two sides of the tower crane; with two sets of movable pulley blocks and under the traction of a traction winch, the components of the tower cranes are separately lifted down and decomposed by a chain block on the ground and conveyed outward by a wheel-type flat car, thereby achieving an aim of dismantling the tower crane without relatively large hoisting equipment; meanwhile, the stress in lifting and dismantling processes is subjected to detailed calculation and measure design so as to guarantee the stress safety of the small hoisting equipment and material adopted