| 摘要 |
The improvements relate principally to the traction rollers which are mounted on the corresponding shafts and are equipped with a torque-limiter system, which rollers achieve a clutch (engagement) effect, being entrained by the actual shafts up to a specific torque, and when said specific torque is exceeded disengagement takes place, a situation which arises when a stop or another retention element prevents the advance of the pallet and, at that time, the rollers also stop and only the shafts continue to rotate. The improvements relate principally to the structure of the actual roller, the latter consisting of a cylindrical body which, in the direction of the generatrices, has a plurality of grooves, one of which is open, between which are defined respective portions equipped with blind holes in the axial direction, the roller being supplemented with a sleeve (bushing) of elastomeric material. <IMAGE>
|
