| 摘要 |
<p>A tower-type double-chain belt oil pumping machine comprises: a tower frame (10), a first belt roller (14) and a second belt roller (15) separated from each other in parallel being disposed on the top of the tower frame, an upright device cabin (16) being disposed on the tower frame at a side of the second belt roller (15), and a windproof guide rail (17) extending uprightly being disposed on a side of the tower frame at a side of the first belt roller (14); a weighted belt (20) performing reciprocating motion, disposed across the first belt roller (14) and the second belt roller (15), and comprising an inner side end (21) located in the device cabin (16) of the tower frame (10) and an outer side end (22) extending at an outer side of the tower frame (10), the outer side end (22) being provided with a beam hanger (26) for being connected to an oil pumping rod, the beam hanger (26) being provided with a guide wheel (23) adapted to the windproof guide rail (17), and the device cabin (16) being provided with a balance box (30) connected to the inner side end (21) of the weighted belt (20) and a first chain drive mechanism (40) and a second chain drive mechanism (40') for driving the balance box (30) to move vertically. The oil pumping machine adopts a four-post tower structure, thereby greatly improving the stability of the device, avoiding the influence of the wind load on oil pumping, and increasing the reliability of the device.</p> |
