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US 2020/0347577 A1Published application
Excavator including upper swing body having free swing function
AssigneeVolvo Construction Equipment AB
InventorsOkjin SUK,, Chunhan LEE
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AssigneeVolvo Construction Equipment AB
InventorsOkjin SUK,, Chunhan LEE
Estimating the term…
A system for enabling an upper swing body of construction equipment to swing freely. A working device is attached to the upper swing body to lift and move an object. A swing motor is connected to a power unit to swing the upper swing body. A controller is electrically connected to the working device and the swing motor to detect forces applied to the working device, and based on the detected forces, generating a control signal to control the swing motor so that the upper swing body swings freely. The system enables the upper swing body to swing freely to reduce energy consumption while ensuring safety when the upper swing body lifts a load.
A system for enabling an upper swing body of construction equipment to swing freely, the construction equipment including a lower travel body and the upper swing body located on the lower travel body, the system comprising:
A system for enabling an upper swing body of construction equipment to swing freely, the construction equipment including a lower travel body and the upper swing body located on the lower travel body, the system comprising:
Dependencies are inferred from the claim text.