| 摘要 |
A hay bale processor (10) having a cylindrical rotatable drum (14) adapted t o displace a bale of hay (156-157) over a grill (26) which has a plurality of spaced-apart parallel slot openings (27) which are adjustable to define an average fiber cut length. A rotor (28) driven by an electric motor (66-67) h as cutting blades (35) projecting through the openings to contact a bottom face (159) of a bale of hay (160) displaced over the grill. The rotor has a driveable shaft (29) secured to a displaceable suspension mechanism (45) to displace the blades (35) in the openings and above the grill a variable distance depending on the resistive load appliA hay bale processor (10) havi ng a cylindrical rotatable drum (14) adapted to displace a bale of hay (156-157 ) over a grill (26) which has a plurality of spaced-apart parallel slot openin gs (27) which are adjustable to define an average fiber cut length. A rotor (28 ) driven by an electric motor (66-67) has cutting blades (35) projecting throu gh the openings to contact a bottom face (159) of a bale of hay (160) displaced over the grill. The rotor has a driveable shaft (29) secured to a displaceab le suspension mechanism (45) to displace the blades (35) in the openings and above the grill a variable distance depending on the resistive load applied to theblades of the rotor when a bale of hay is displaced over the grill. The displaceable suspension mechanism (45) is biased upwardly by an air cylinder (50) or air cushion device (280) to maintain a substantially constant pressu re on the displaceable suspension such that when the load on the cutting knives of the rotor are subjected to a force exceeding the predetermined pressure o f the cylinder the rotor is displaced whereby a substantially constant drive torque is maintained on the electric motor driving the shaft (29) of the rot or (28).
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