Patent ID: 9422689
Filing Date: 2016-08-23
CPC Classification: E02F,F15B

Claim Text:
1. A shovel including a plurality of hydraulic actuators including a boom cylinder, comprising: a hydraulic motor driven by hydraulic oil flowing out of the boom cylinder; a regenerating oil passage configured to supply the hydraulic oil flowing out of the boom cylinder to the hydraulic motor; a reusing oil passage configured to supply the hydraulic oil flowing out of the boom cylinder to another hydraulic actuator; a reusing flow control valve configured to control a flow rate of hydraulic oil flowing in the reusing oil passage; a boom cylinder pressure sensor configured to detect pressure of hydraulic oil in the boom cylinder; and a hydraulic actuator pressure sensor configured to detect pressure of hydraulic oil in the other hydraulic actuator, wherein the reusing flow control valve, which is a switching valve configured to switch between an opening and a closing of the reusing oil passage, opens the reusing oil passage when the pressure of the hydraulic oil in the boom cylinder is greater than the pressure of the hydraulic oil in the other hydraulic actuator.