| 摘要 |
A passenger conveyor system ( 20 ) has a drive module that engages only one side ( 50 ) of the step chain loop ( 30 ). In a multiple drive module arrangement, at least one of the drive modules ( 40 B) engages both sides ( 50, 52 ) of the step chain loop while another engages only one side ( 50 ). The inventive arrangement is not sensitive to spacing ( 54, 56 ) between the drive modules. Another example embodiment includes a synchronizing module ( 60 ) that engages both sides ( 50, 52 ) of the step chain loop ( 30 ).
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