Lifting chain adjustment balance weight beam structure

The utility model relates to a lifting chain adjustment balance weight beam structure and belongs to the technical field of oil pumping machines of an oil extraction machine. According to the technical scheme, the lifting chain adjustment balance weight beam structure comprises a balance weight beam (6), a balance weight block (4), a roller (5), a driving chain wheel (2), a driven chain wheel (7) and a lifting chain (3), wherein the balance weight block is arranged on the balance weight beam by virtue of the roller, the driving chain wheel and the driven chain wheel are respectively arranged at the two ends of the balance weight beam, the lifting chain is respectively connected with the two ends of the balance weight block to form a lifting chain loop, the lifting chain loop is matched on the driving chain wheel and the driven chain wheel, and the driving chain wheel is connected with a turbine worm reducer (1). The lifting chain adjustment balance weight beam structure has the advantages and beneficial effec