Patent ID: 9651124
Date: 2017-05-16
CPC Classifications: E21B,F04B,F16H,Y10T

Claim:
1. An oil pumping machine with pinion reciprocating on rack, the oil pumping machine comprising a base, a housing, a crown block, a steel wire rope, a motor, a reducer, a pinion, and a rack; a rack seat in an endless oblong shape is fixed on the inner sides of a front portion of the housing, and the rack is secured on the rack seat presenting an endless oblong rail; the two inner sides of the housing are provided with guiding rails for a reciprocating frame; at each of four corners of the reciprocating frame, a horizontal guiding wheel and a longitudinal guiding wheel are mounted; at a middle point of an upper portion of the reciprocating frame, a hinge is mounted, which is connected to a pendulous frame inside the reciprocating frame via a hinge link; an output shaft of the reducer is mounted with a pinion pilot wheel and a pinion; the pinion is engaged with the rack; an arched rail is provided at a bottom of the reciprocating frame; two pendulous wheels are mounted at the bottom of the pendulous frame and restrained by the arched rails; and an upper portion of the reciprocating frame is connected to a steel wire rope to drive the steel wire rope, realizing the operation of pumping oil.