Title:
SHOVEL
Document Type and Number:
Japanese Patent JP2023151651
Kind Code:
A
Abstract:
To provide a shovel having improved operability.SOLUTION: The shovel includes an operation device, a hydraulic actuator, a hydraulic pump for supplying working oil to the hydraulic actuator, an engine for driving the hydraulic pump, control valves for controlling the working oil to be supplied from the hydraulic pump to the hydraulic actuator, solenoid proportional valves connected via pilot lines for supplying a pilot pressure to the control valves, and a control unit for controlling the solenoid proportional valves. The control unit changes the control of the solenoid proportional valve provided in the pilot line on the meter-out side according to the state of the engine or the hydraulic pump.SELECTED DRAWING: Figure 6
Inventors:
MISAKI YOJI
Application Number:
JP2022061388A
Publication Date:
October 16, 2023
Filing Date:
March 31, 2022
Export Citation:
Assignee:
SUMITOMO SHI CONSTRUCTION MACHINERY CO LTD
International Classes:
E02F9/22; F15B11/044; F15B11/08
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito