Abstract: The invention relates to an intelligent online closed-loop balance adjusting system for a pumping unit. The system comprises a connecting rod, balance weights, a transmission device, a balance weight displacement adjusting motor and a control device used for driving the motor to adjust and control the weight displacement. The transmission device and the balance weight displacement adjusting motor are arranged above a walking beam. The balance weight displacement adjusting motor is connected with one end of the connecting rod through the transmission device, and the other end of the connecting rod is connected with balance weights. One end of the walking beam away from the horse-head is connected with the middle part of the connecting rod. The invention can realize automatic weight adjustment without shutting the machine down, and the balance weights can be adjusted with the precision of ±10%.

Abstract: The invention relates to an intelligent online closed-loop balance adjusting system for a pumping unit. The system comprises a connecting rod, balance weights, a transmission device, a balance weight displacement adjusting motor and a control device used for driving the motor to adjust and control the weight displacement. The transmission device and the balance weight displacement adjusting motor are arranged above a walking beam. The balance weight displacement adjusting motor is connected with one end of the connecting rod through the transmission device, and the other end of the connecting rod is connected with balance weights. One end of the walking beam away from the horse-head is connected with the middle part of the connecting rod. The invention can realize automatic weight adjustment without shutting the machine down, and the balance weights can be adjusted with the precision of ±10%.