Patent ID: 7703224
Filing Date: 2010-04-27
Classification: E02F

Abstract:
1. A wearing parts system for a tool of an earth moving machine comprising: a holder part, attached to the tool and comprising a holder beak; a replacement part comprising a hollow, configured to grip the holder beak such that said holder beak is at least partially fitted, along a line of symmetry extending longitudinally through the holder beak, into said replacement part, and further configured to be fixed therein by means of a locking mechanism inserted through both the holder part and the replacement part substantially perpendicularly with respect to the line of symmetry, a plurality of mutually interacting pairs of contact elements, disposed on each of said holder part and said replacement part, substantially symmetrically offset from the line of symmetry, comprising: at least one locking device, comprising at least a first, a second and a third section wherein the first section is configured to have the widest cross section and the third section is configured to have the smallest cross section among the first, second and third sections, configured to be placed through interacting openings disposed within both the holder part and the replacement part, such that when the locking device is placed through the openings in the replacement part and the holder part, three longitudinal sections are defined in the openings, in which the first section is configured to have the widest cross section, whilst the third section of the locking device opening through which the locking device is lastly inserted is configured to have the smallest cross section, and wherein the locking device comprises at least two movable engagement parts loaded by elastic material, wherein the engagement parts are constituted by a securing plate for detachable blocking of the locking device in a predetermined locking position, and a compression plate configured to load via its elastic material the contact elements of the replacement part and of the holder part against each other.