| 摘要 |
The invention provides a machine for grinding tree stumps to a level below the surface of soil in which the stump is located. The machine comprises a sled structure including lugs for releasably coupling the sled with pivot pins to a moveable boom of a backhoe or other earth moving machine. The sled has skids or skiis for guiding the apparatus over the surface of soil adjacent to the stump with the moveable boom. A drive unit is mounted on the sled having power transmission and a self contained fuel source. A stump grinding wheel is journaled to the sled for rotation about a substantially horizontal axis and coupled to the power transmission of the drive unit. The wheel has a stump abrading surface with replaceable teeth which shred, chip or grind the wood of the stump and dig a trench in the soil approximately 6-9 inches deep. Preferably, the sled comprises a rectangular platform and two elongate skids each extending downwardly from one of two opposing sides of the platform thereby defining an inverted channel shaped sled having a forward and a rearward open end. The grinding wheel is mounted between said skids with the axis transverse to said opposing sides. A guard flap is hinged to the platform covering at least one open end, and the skids have planar inner surfaces to contain the spewing of wood and soil particles caused by the stump grinding operation.
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