| 摘要 |
An apparatus (10) for imparting tension to multiple strands of an endless power transferring member loop (12) encircling a drive sprocket (14) and at least one driven sprocket (16a, 16b). Two tensioning arms (18a, 18b) are spaced apart and have guided movement relative to at least one fixed pin (26), and support inwardly facing shoes (20a, 20b) with power-transferring-member-sliding faces (22a, 22b). A link assembly (60) includes at least two link members (32a, 32b) pivotally connected to one another at respective first ends (40a, 40b). The connected first ends (40a, 40b) are constrained for limited movement along a fixed slot (36) extending generally along a centerline of the power transferring member loop (12) between the drive sprocket (14) and the driven sprockets (16a, 16b). The link members (32a, 32b) are pivotally connected individually to opposite ends of the two spaced apart tensioning arms (18a, 18b) at second locations (42a, 42b). |
