Non-gear counterweight drawing type oil pumping machine provided with motor at lower

Abstract

The invention relates to a gearless counterweight towing oil extractor the motor of which is arranged on the lower part, which fundamentally solves the problems in the prior towing oil extractor of high cost, short service life of wire ropes and poor safety. The technical key points of the gearless counterweight towing oil extractor are as follows: a suspension device is arranged on the top of a frame; a pumping rod and a counterweight are suspended on both sides of a head sheave through suspended wire ropes; a driving sheave of a tractor and a belt pulley of a belt gear which is arranged on a foundation and driven by a magnetoelectric machine are arranged on the same transmission shaft; and one end of a conveying rope on the driving sheave passes by a guide wheel which is fixed on the frame and a movable pulley one which is arranged on the upper part of the counterweight and then is fixed on the top of the frame, and the other end of the conveying rope passes by a movable pulley two which is arranged on the lower part of the counterweight and then is fixed on the foundation. The gearless counterweight towing oil extractor has the advantages of high transmission efficiency, low energy consumption, small volume, light weight and low manufacturing cost, and realizes more convenient assembly and maintenance of a system.

Description

technical field [0001] The invention belongs to the technical field of oil production machinery in oilfields, and relates to a traction pumping unit, in particular to a gearless counterweight traction pumping unit with a low-stroke and long-stroke motor placed underneath. Background technique [0002] At present, the pumping unit commonly used in the oil field is mainly a beam pumping unit, which is composed of a donkey head, a beam, a bracket, a reduction box, a rocker arm, a connecting rod, a machine base, a motor, a control cabinet and other mechanisms. Its working principle is that the motor transmits the power to the reducer through the belt, and the reducer drives the rocker arm, drives the beam to swing up and down around a fixed point, and realizes the vertical reciprocating motion of the sucker rod. However, due to the use of a transmission device with a reducer, this beam pumping unit not only has the disadvantages of low transmission efficiency, high energy consum...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a gearless counterweight traction pumping unit with a motor under a reasonable structural design, which fundamentally solves the problems of high cost, short service life of steel wire ropes, and Poor safety and other issues, while having the advantages of high transmission efficiency, low energy consumption, small size, light weight, and low production cost, making the installation and maintenance of the whole machine more convenient

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