Novel double balance reducer for pumping units

Abstract

The invention provides a novel reducer for pumping units and solves the problem that the existing motor for pumping units operates under low power factor. An output shaft of the reducer comprises a hollow shaft and a solid shaft. The hollow shaft and the solid shaft are connected with a secondary balance weight and a primary crank balance weight in a pumping unit respectively. Speed ratio of the hollow shaft to the solid shaft is 1:2. When the pumping unit is in upward stroke, the motor, the primary crank balance weight and the secondary balance weight pull a sucker rod to move up. When the pumping unit is in downward stroke, the motor, the secondary balance weight and a sucker rod weight pull the primary crank balance weight to move up. Therefore, power configuration of the motor is reduced greatly, pulling small cars with high horsepower is avoided, motor efficiency is improved, and energy consumption is lowered.

Description

technical field [0001] The invention relates to a speed reducer, in particular to a speed reducer applied to a pumping unit. Background technique [0002] At present, conventional beam pumping units adopt crank balance or compound balance based on crank balance. The balance torque generated by the crank balance device on the output shaft of the reducer changes according to the sinusoidal law. After the load torque curve and the crank balance torque curve are reduced , even in an ideal balanced state, there are still problems with large net torque curve fluctuations, high peaks and deep negative valleys, so it is necessary to choose a reducer with a larger torque and a motor with a higher power, resulting in large The laborious energy consumption of the horse-drawn trolley makes the efficiency of the pumping unit low and the energy consumption is serious, and the motor works in a state of low power factor, which will also make the power supply quality of the grid deteriorate ...

AI Technical Summary

Problems solved by technology

[0002] At present, conventional beam pumping units adopt crank balance or compound balance based on crank balance. The balance torque generated by the crank balance device on the output shaft of the reducer changes according to the sinusoidal law. After the load torque curve and the crank balance torque curve are reduced , even in an ideal balanced state, there are still problems with large net torque curve fluctuations, high peaks and deep negative valleys, so it is necessary to choose a reducer with a larger torque and a motor with a higher power, resulting in large The laborious energy consumption of the horse-drawn trolley makes the efficiency of the pumping unit low and the energy consumption is serious, and the motor works in a state of low power factor, which will also make the power supply quality of the grid much worse

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