| 摘要 |
1. A binding device for round or cylindrical bale presses comprising a twine guide member (17) which is displaceable transversely with respect to the press on a rectilinear guide formed by a screw (6) of helicoidal thread type which is mounted in front of the opening for the intake of crop products into the chamber of the press and which is intended to rotate on the chassis or body (1) of the press, characterised in that the twine guide member comprises a pulley (17) which is mounted rotatably on the screw (6), that the screw (6) rotates freely in the chassis or body (1) of the press and comprises a single helicoidal thread (10) extending over the length thereof, that an axially fixed pulley (13) having a plurality of stages is angularly fixed on said screw, said pulley (13) having a plurality of stages comprising at least one stage (16) which is larger in diameter than the guide pulley (17) and a stage (14) which is smaller in diameter than the guide pulley (17), the binding twine (31) which is called for by the bale in the course of binding passing over said twine guide pulley (17) and over said pulley (13) having a plurality of stages, causing them to be driven in rotation when the binding twine is called for in that manner, and that means (29, 30) are provided for causing the binding twine to pass selectively to one or other of the stages (14-16) of the pulley (13) having a plurality of stages.
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