Excavating tooth with a clad resilient locking pin

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 9/28 (2006.01)

Patent

CA 2155012

An excavating tooth (10) for use on a wide variety of excavating equipment is comprised of a point (12), an adapter (14) and a sandwich lock pin (16). The pin includes a rigid casing (54) and a plurality of independently depressible protrusions (58), (59). One of the protrusions (58) resiliently engages a face (22) defined on the nose of the adapter to tighten the connection of the point on the nose. One other of the protrusions (59) extends into an opening (50) defined by the point to secure the lock pin to the point. With respect to an external locking tooth, the opening (50) defined in the point includes a pair of bosses (155a), (155b) which define a reduced portion of the opening. The reduced portion matingly receives and holds the ends of the rigid casing of the pin. The independent locking of the pin and the mating receipt of the casing in the point opening reduces the likelihood of pin loss due to overloading of the elastomeric material, wearing of the components or jacking forces.

Dent d'excavation (10) utilisable sur une variété de matériels d'excavation, comprenant une pointe (12), un adaptateur (14), une goupille sandwich (16). La goupille comprend une gaine rigide (54) et une série de protubérances-pressoirs (58, 59) autonomes. L'une des protubérances entre dans une face (22) de manière à en assurer la suspension souple; cette face est définie sur le nez de l'adaptateur pour serrer la fixation de la pointe sur celui-ci. Une autre protubérance (59) entre dans l'ouverture (50) définie sur la pointe pour bloquer la goupille sur celle-ci. En ce qui concerne la dent de blocage externe, l'ouverture (50) définie sur la pointe comprend une paire de bosses (155a, 155b) qui configurent la partie réduite de l'ouverture. Cette partie réduite reçoit et maintient accouplées les extrémités de la gaine rigide de la goupille. Le blocage autonome de la goupille et le receveur d'accouplement à l'ouverture de la pointe réduisent les risques de perte de la goupille par suite d'une surcharge de matériau élastomère, d'une usure des composants ou sous l'effet des forces de levage.

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