A New Type of Low Speed High Torque Hydraulic Motor Using Digital Distribution and Speed Adjusting

A kind of low speed high torque(LSHT) hydraulic motor using digital distribution and speed adjusting was introduced,in which high speed solenoid on/off valves was used to replace the shaft distribution or plane distribution mechanisms.A concrete analysis of mechanism and implementation structure of digital distribution and speed adjusting was made.A theoretical analysis of distribution characteristics and speed adjusting characteristics of this new hydraulic motor was made.This new LSHT hydraulic motor can decrease the maching difficulty of traditional LSHT hydraulic motor,and can enhance the mechanical efficiency and volume efficiency of traditional LSHT hydraulic motor.By adjusting control sequence and PWM signal of high speed solenoid on/off valves,the bidirectional stepless speed regulation of traditional LSHT hydraulic motor can be actualized without other variable displacement mechanism.