| 摘要 |
<p>A sod harvester (10) in which sod is cut, conveyed upwardly, and then travels downwardly over a floppy conveyor (78) and falls into a roll forming enclosure (76) formed with a bottom conveyor (86) and a vertical conveyor (92). The floppy conveyor (78) swings downwardly at the start of roll forming, to reduce the free fall of the sod, and swings upwardly as the roll (162) grows. When the roll (162) is formed, the bottom conveyor (86) is unlatched and tilts downwardly to discharge the roll (162), at the same time putting into cocked position a core tube injector arm (202, 206). When the roll (162) discharges, the bottom conveyor (86) snaps upwardly, releasing the core tube injector arm (202,206) which injects a fresh core tube (164) into the roll forming enclosure (76). The sod is rolled with its grass side outwardly to facilitate laying and to protect the grass roots. A tray (266) on a cart (222) at the end of the harvester receives the discharged roll (162) and can convey it to either side of the cart. When the tray (266) reaches either side of the cart, a cam (270, 272) tilts the tray (266) to discharge the roll (162) onto the ground clear of the next pass of the harvester.</p> |
