Intelligent boom control hydraulic system

摘要

An intelligent knuckle boom control system is disclosed where hoist and stick cylinders raise and lower main and stick booms, respectively, a base end control valve controls flow to the hoist and stick cylinder base ends, a hoist rod control valve controls flow to the hoist cylinder rod end, and a stick rod control valve controls flow to the stick cylinder rod end. A microprocessor computes control signals to direct flow through the control valves based on operator commands and boom position readings. The system can include an energy storage system for storing excess energy and releasing the stored energy, where the microprocessor directs storage of excess energy and release of stored energy. The energy storage system can include a hydraulic accumulator, an accumulator control valve and hydraulic pressure sensors; where the microprocessor receives pressure sensor readings and computes accumulator control valve control signals.

主权项

1. An intelligent boom control hydraulic system for a knuckle boom system including a main boom and a stick boom coupled at a knuckle; the intelligent boom control hydraulic system comprising:
a hoist hydraulic cylinder for raising and lowering the main boom, the hoist hydraulic cylinder having a rod end and a base end; a stick hydraulic cylinder for raising and lowering the stick boom, the stick hydraulic cylinder having a rod end and a base end; a hoist boom position sensor providing hoist boom position readings; a stick boom position sensor providing stick boom position readings; a hydraulic fluid pump; a hydraulic reservoir including hydraulic fluid; a base end control valve controlling flow from the hydraulic fluid pump to the base ends of the hoist and stick hydraulic cylinders, and controlling flow from the base ends of the hoist and stick hydraulic cylinders to the hydraulic reservoir; a hoist rod control valve controlling flow from the hydraulic fluid pump to the rod end of the hoist hydraulic cylinder, and controlling flow from the rod end of the hoist hydraulic cylinder to the hydraulic reservoir; a stick rod control valve controlling flow from the hydraulic fluid pump to the rod end of the stick hydraulic cylinder, and controlling flow from the rod end of the stick hydraulic cylinder to the hydraulic reservoir; an operator input device for input of operator commands; and a microprocessor computing control signals to direct flow through the base end control valve, the hoist rod control valve and the stick rod control valve based on the operator commands and the hoist and stick boom position readings.