초록 ▼

A belt pickup header for an agricultural harvesting machine includes a frame having opposite ends, a belt pickup carried by the frame, and a pair of suspension arms carrying the belt pickup. Each suspension arm is pivotally coupled with a respective frame end. A pair of compression springs are each

A belt pickup header for an agricultural harvesting machine includes a frame having opposite ends, a belt pickup carried by the frame, and a pair of suspension arms carrying the belt pickup. Each suspension arm is pivotally coupled with a respective frame end. A pair of compression springs are each positioned between a respective suspension arm and corresponding frame end. Each spring vertically supports a respective suspension arm. A pair of fluid shocks are each interconnected between a respective suspension arm and corresponding frame end. Each fluid shock damps movement of the corresponding suspension arm.

대표청구항 ▼

The invention claimed is: 1. A belt pickup header for an agricultural harvesting machine, comprising: a frame having spaced opposite ends; a belt pickup carried by said frame; a pair of suspension arms carrying said belt pickup, each said suspension arm pivotally coupled with a respective said fram

The invention claimed is: 1. A belt pickup header for an agricultural harvesting machine, comprising: a frame having spaced opposite ends; a belt pickup carried by said frame; a pair of suspension arms carrying said belt pickup, each said suspension arm pivotally coupled with a respective said frame end, each said suspension arm including a proximal end pivotally coupled with said corresponding frame end, and a distal end coupled with said belt pickup; a pair of suspension links, each said suspension link interconnected between a corresponding said suspension arm distal end and said belt pickup and wherein said belt pickup includes a trailing edge and further including a transfer belt assembly adjacent said trailing edge, each said suspension link coupled with said belt pickup adjacent said trailing edge; a pair of lower travel limit linkages, each said lower travel limit linkage interconnected between a corresponding said frame end and said transfer belt assembly; a pair of compression springs, each said spring positioned between a respective said suspension arm and corresponding said frame end, each said compression spring vertically supporting said respective suspension arm; and a pair of fluid shocks, each said fluid shock interconnected between a respective said suspension arm and corresponding said frame end, each said fluid shock damping movement of said corresponding suspension arm substantially between its range of movement. 2. The belt pickup header of claim 1, wherein each said compression spring comprises one of an air spring, a coil spring and a hydraulic spring. 3. The belt pickup header of claim 2, wherein each said compression spring comprises an air spring including a bladder coupled with a pair of end plates, one said end plate engaged with said corresponding frame end, and an other said end plate coupled with said corresponding suspension arm. 4. The belt pickup header of claim 3, wherein each said air spring includes an air valve. 5. The belt pickup header of claim 2, wherein each said compression spring vertically supports said corresponding suspension arm at a selected height. 6. The belt pickup header of claim 5, wherein each said compression spring is adjustable. 7. The belt pickup header of claim 1, wherein each said fluid shock comprises one of a hydraulic shock and a gas shock. 8. The belt pickup header of claim 7, wherein each said fluid shock includes a ram defining an upper travel limit of said belt pickup. 9. The belt pickup header of claim 1, wherein each said lower travel limit linkage comprises a two bar linkage. 10. A belt pickup header for an agricultural harvesting machine, comprising: a frame having spaced opposite ends; a belt pickup carried by said frame, said belt pickup including a trailing edge; a transfer belt assembly adjacent said trailing edge; a pair of suspension arms carrying said belt pickup, each said suspension arm pivotally coupled with a respective said frame end; a pair of lower travel limit linkages, each said lower travel limit linkage interconnected between a corresponding said frame end and said transfer belt assembly a pair of compression springs, each said compression spring positioned between a respective said suspension arm and corresponding said frame end, each said compression spring vertically supporting said respective suspension arm; and a pair of fluid shocks for damping movement, each said fluid shock connected with a corresponding said frame end and associated with a corresponding said suspension arm, said shocks substantially damping movement between the range of movement of said suspension arm. 11. The belt pickup header of claim 10, wherein each said fluid shock is connected with said transfer belt assembly and a respective said suspension arm. 12. The belt pickup header of claim 11, wherein each said fluid shock comprises a hydraulic shock. 13. The belt pickup header of claim 11, wherein each said fluid shock includes a ram defining an upper travel limit of said belt pickup. 14. The belt pickup header of claim 10, wherein each said compression spring comprises one of an air spring, a coil spring and a hydraulic spring. 15. The belt pickup header of claim 14, wherein each said compression spring comprises an air spring including a bladder coupled with a pair of end plates, one said end plate engaged with said corresponding frame end, and an other said end plate coupled with said corresponding suspension arm. 16. The belt pickup header of claim 15, wherein each said air spring includes an air valve. 17. The belt pickup header of claim 14, wherein each said compression spring vertically supports said corresponding suspension arm at a selected height. 18. The belt pickup header of claim 17, wherein each said compression spring is adjustable.