FIXING SYSTEM OF A WEAR ELEMENT IN A SUPPORT ELEMENT OF AN EARTH MOVING MACHINE THROUGH A PIN, AND A RETAINER

The invention relates to a fixing system for fixing a wear element (16) in the nose (19) of a support element of an earth moving machine by means of a pin (7) which is housed in an opening of the wear element and in an opening (25) in the nose, coaxial with the opening of the wear element. The system comprises a retainer (1), which is a sheet material with a flexible flange (3) extending towards the path of the pin when it is introduced in the openings, interrupting said path. The retainer is fixed to the wear element or to the nose. The flange is bent towards the direction of the pin when it is introduced in the openings. The pin has a blocking segment (13) with a step the riser (15) of which is oriented such that the flange abuts against the riser when attempting to remove the pin. For its removal, the pin must be rotated about its axis until the flange comes out of the step and is arranged in a segment in which the side surface of the pin extends continuously until the final end (10) thereof. Sistema de fijación de un elemento de desgaste (16) en la nariz (19) de un elemento de soporte de una máquina de movimiento de tierras mediante un pasador (7) que se aloja en un orificio del elemento de desgaste y en un orificio (25) en la nariz, coaxial con el orificio del elemento de desgaste. El sistema comprende un retenedor (1), que es un material laminar con una pestaña flexible (3) que se extiende hacia la trayectoria del pasador al ser introducido en los orificios, interrumpiéndola. El retenedor está fijado al elemento de desgaste o a la nariz. La pestaña está doblada hacia el sentido del pasador cuando es introducido en los orificios. El pasador presenta un tramo de bloqueo (13) con un escalón cuya contrahuella (15) está orientada de tal manera que la pestaña topa con la contrahuella al intentar sacar el pasador. Para sacar el pasador hay que girarlo sobre su eje hasta que la pestaña sale del escalón y queda en un tramo en donde la superficie lateral del pasador se extiende de manera continua hasta su extremo final (10).