The present application relates to the field of pumping unit, in particular to a long
stroke tower type pumping unit. It comprises a pumping
tower, a counterweight, a traction mechanism and a driving mechanism, the counterweight is arranged to slide up and down in the pumping
tower; the traction mechanism comprises a drum, a flexible traction member and a guide wheel
assembly, the drum is rotatably arranged at the bottom of the pumping tower, the guide wheel
assembly is arranged at the top of the pumping tower, the flexible traction member is wound around the guide wheel
assembly and the drum and tractions the counterweight and the pumping rod, the driving mechanism is used to drive the drum to rotate. The present application configures the traction mechanism to make the movement direction of the pumping rod and the counterweight opposite and make the
stroke of the pumping rod greater than that of the counterweight when the drum rotates. In the case of the same height of the pumping tower, the pumping rod has a longer
stroke, realizing long stroke pumping of the pumping rod, to meet the best parameter setting of
oil production needs.