Patent ID: 9297148
Filing Date: 2016-03-29
CPC Classification: B66C,E02F,F15B

Claim Text:
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.