PROTECTION DEVICE AGAINST ACCIDENTAL DERAILING OF ROPE FROM A PULLEY,PARTICULARLY WITH FORESTRY WINCHES

摘要

The protection device against accidental derailing of rope from a pulley (4) consists of at least a pin (11) and a stem (12) with an integrated spring (123) which are firmly interconnected. The pin (11) can be past the pulley (4) inserted through the coaxial openings (211, 221) which are at corresponding locations available in the mutually displaced walls (21, 22) of the enclosure (2), while through the specified walls (21, 22) an axis (3) is running through the freely rotating pulley (4). The stem (12) is firmly connected to the aforementioned pin (11) which can be shifted in the direction of its longitudinal axis from the position of fitting the aforementioned openings (211, 221) in the walls (21, 22) of the enclosure (2) to the position of fitting only one opening (221) in the wall (22) against the spring (123) force, which is during this supported against the corresponding wall (22) of the enclosure (2). The stem (12) which is on its free end (121) reaching towards the interior of the enclosure (2) past the pulley (4) equipped with a limiter (122), is designed parallel to the pin (11) and inserted through openings (222) in the corresponding wall (22) on that side of the enclosure (2) which the pin (11) can be moved to against the force of the aforementioned spring (123), while the specified stem (11) with pin (11) is firmly connected via a link (13) located outside the enclosure (2).