Pulley block drive type pumping unit

A pulley-block transmission-type pumping unit is provided, comprising a main body support, a winding drum, a load fixed block, a counterweight block, a counterweight wire cable and a counterweight fixed block, in which the load wire cable above the load fixed block has its two ends wound around the load movable block and a dancing pulley and then fixed to the winding drum; the counterweight wire cable is fixed to the winding around the winding drum through the counterweight fixed block, the counterweight movable block, and the counterweight dancing pulley; during operation, the motor drives a reducer and the winding drum, the wire cable is wound around the winding drum, and the sucker rod follows the movable block; during the upstroke or down stroke of the pumping unit, the sucker rod moves up and down to pump the oil underground. The utility model simplifies the mechanical structure and reduces and equalizes the stress on the pumping unit, thereby facilitating the repair and maintenance, lowering the manufacture cost and improving the efficiency. The utility model can be widely used as a substitute for the existing pumping units, or to renovate the beam pump.