| 摘要 |
A gear box for a drive head of a conveyor comprises a casing 11 and a gear train contained within the casing 11 and including a plurality of shafts on which gear wheels are mounted, the shafts being rotatable about parallel axes and all the axes 16 being located in a common plane, with at least an output shaft having its axis of rotation off-set with respect to the common plane, whereby the at least one off-set axis is located above or below the common plane.
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