| 摘要 |
A belt drive is provided which includes a circulating belt ( 8 ) which is driven by at least one drive element ( 9 ) and which drives at least one driven element ( 10 ). At least one first tensioning device ( 20 ) acts upon the belt ( 8 ) in the slack strand and at least one second tensioning device acts in the tightened strand. To prevent or reduce jumps and/or transverse oscillations of the belt ( 8 ), the second device ( 21 ) guides the belt ( 8 ) and at least one third device ( 22 ) which is arranged radially inside the belt drive, which is suitable, optionally, limits deviations of the belt ( 8 ). The second device ( 30, 40, 50, 60, 70, 80, 90, 100 ) also tensions the belt ( 8 ) in such a manner that it is subjected to a force (F 1 ) which is smaller than the force (F 2 ) which is oriented counter thereto during the operation of the belt ( 8 ) on the second tensioning device ( 30, 40, 50, 60, 70, 80, 90, 100 ).
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