Safety clutch device for agricultural machine drive

摘要

The drive assembly has a locking device that has a locking ratchet held in inactive position. The locking ratchet can be displaced manually or by an actuating device out of the inactive position into contact with the holding face of a ratchet gear (20) for stopping the rotational movement of the ratchet gear. A projection (8) protrudes radially from the seat face (7) of a coupling hub (3) included in a shear pin coupling (1) with reference to the longitudinal axis (2) of the shear pin coupling and first attaching mechanism. The seat face of the coupling hub is axially arranged between the projection (8) and bearing seat of the coupling hub. A coupling sleeve (12) is supported on the bearing seat of the coupling hub to rotate relative to the coupling hub. Another projection (17) is extended radially relative to the longitudinal axis. A second attaching mechanism includes the ratchet gear formed with a bearing bore and supported on the seat face of the coupling hub. The ratchet gear rotates relative to the coupling hub. A shear pin (26) is received in the bores of the projections and ratchet gear, such that the receiving bores are aligned with one another and arranged radially offset relative to the longitudinal axis. The shear pin firmly connects the projections in the rotation direction around the longitudinal axis.