Patent ID: 11885105
Assignee: KOBELCO CONSTRUCTION MACHINERY CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E  F | IPC E  F

Claim 12:
13. The hydraulic control apparatus according to claim 12, further comprising:
a regeneration valve provided in a regeneration flow path for merging discharge hydraulic fluid that is discharged from the work actuator into supply hydraulic fluid that is to be supplied to the work actuator, the regeneration valve being shiftable between an opening state of opening the regeneration flow path and a closing state of blocking the regeneration flow path;
a regeneration release valve provided in a return flow path allowing the discharge hydraulic fluid to be returned to a tank without merging into the supply hydraulic fluid, the regeneration release valve being shiftable between an opening state of opening the return flow path and a closing state of blocking the return flow path; and
a regeneration control unit configured to
shift the regeneration valve to the opening state and shift the regeneration release valve to the closing state when the physical quantity detected by the driving state detector in the combined operation state is within the allowable range, and
shift the regeneration valve to the closing state and shift the regeneration release valve to the opening state when the physical quantity detected by the driving state detector in the combined operation state is deviated from the allowable range.