CONTROL CIRCUIT AND CONTROL METHOD FOR BOOM ENERGY REGENERATION

摘要

The present disclosure relates to a control circuit and a control method for boom energy regeneration, and the control circuit for boom energy regeneration includes: a control unit which controls a discharge amount control valve, such that the amount of oil, which is discharged from a head of a boom cylinder, is supplied to a regeneration device or a rod of the boom cylinder through a hydraulic regeneration line, and when the regeneration device has an abnormality, the amount of oil, which is discharged from the head of the boom cylinder, is supplied to the main control valve through a hydraulic discharge line.

主权项

1: A control circuit for boom energy regeneration, comprising:
a boom cylinder configured to operate a boom of a construction machine; a regeneration device configured to regenerate energy of the boom cylinder; a hydraulic regeneration line configured to connect the boom cylinder and the regeneration device; a discharge amount control valve provided on the hydraulic regeneration line; a hydraulic discharge line branching off from the hydraulic regeneration line at a front of the discharge amount control valve and is connected to a main control valve; and a control unit configured to control the discharge amount control valve, such that the amount of oil, which is discharged from a head of the boom cylinder, is supplied to the regeneration device or a rod of the boom cylinder through the hydraulic regeneration line, and when the regeneration device has an abnormality, the amount of oil, which is discharged from the head of the boom cylinder, is supplied to the main control valve through the hydraulic discharge line.