| 摘要 |
A drive coupler (102, 104) for coupling a reciprocating knife (106) to a drive member (112, 114) is provided, wherein the reciprocating knife (106) includes at least one elongate bar (120, 122, 180, 182) having a longitudinal extent and fixed to a plurality of blades (138), wherein the at least one elongate bar (120, 122, 180, 182) is supported on support members (140) that constrain the at least one elongate bar (120, 122, 180, 182) to reciprocate in a direction generally parallel to the longitudinal extent of the at least one elongate bar (120, 122, 180, 182), the drive coupler (102, 104) comprising: a first elongate strap (146, 162) configured to be attached to the at least one elongate bar (120, 122, 180, 182); a second elongate strap (146, 162) configured to be attached to the at least one elongate bar (120, 122, 180, 182); and an arrangement (152, 164, 187, 189, 193, 200) for (i) flexing the first elongate strap (146, 162) with respect to the second elongate strap (146, 162), (ii) for flexing the first elongate strap (146, 162) with respect to the drive member (112, 114), and (iii) for flexing the second elongate strap (146, 162) with respect to the drive member (112, 114). |
| 主权项 |
1. A drive coupler (102, 104) for coupling a reciprocating knife (106) to a drive member (112, 114), wherein the reciprocating knife includes at least one elongate bar (120, 122) having a longitudinal extent and fixed to a plurality of blades (138), wherein the at least one elongate bar (120, 122) is supported on support members (140) that constrain the at least one elongate bar (120, 122) to reciprocate in a direction generally parallel to the longitudinal extent of the at least one elongate bar (120, 122), the drive coupler (102, 104) comprising:
a first elongate strap (146) extending in a first direction longitudinally along, and being attached to the at least one elongate bar (120, 122); a second elongate strap (162) extending opposite from said first elongate strap (146) in a second direction longitudinally along, and being attached to the at least one elongate bar (120, 122); and a flexible joint arrangement (152, 164, 187, 189, 193, 200) connecting the first and second elongate straps (146 and 162) to the drive member (112, 114) and connecting the first elongate strap (146) to the second elongate strap (162), the flexible joint arrangement (152, 164, 187, 189, 193, 200) permitting (i) up and down flexing of the first elongate strap (146) with respect to the second elongate strap (162), (ii) up and down flexing of the first elongate strap (146) with respect to the drive member (112, 114), and (iii) up and down flexing of the second elongate strap (162) with respect to the drive member (112, 114). |
