SWING MOTOR FLOW CONTROL APPARATUS OF CONSTRUCTION MACHINERY EQUIPMENT

摘要

The present invention relates to a swing motor flow control apparatus of construction machinery equipment. Particularly, the swing motor flow control apparatus of construction machinery equipment is configured to reduce increase in a drain pressure occurring when a swing motor is driven and stopped. To achieve the purpose of the present invention, the swing motor flow control apparatus of construction machinery equipment comprises: a swing motor rotated by pressure oil; supply lines for supplying the pressure oil to left and right sides of the swing motor, respectively; a makeup line connected to the supply lines of left and right sides; a check valve installed at a connection part of the makeup line and the supply lines of the left and right sides to control the pressure oil to only flow in a direction of making up the swing motor; a drain line connected to the swing motor; and a connection pipe for supplying the pressure oil discharged through the drain line from the swing motor to the makeup line while connecting the drain line with the makeup line.;COPYRIGHT KIPO 2018