Excavating tooth point/adapter assembly with rotatably...

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 9/28 (2006.01)

Patent

CA 2504770

A replaceable excavating tooth point (12) is telescoped onto an adapter nose (24) and releasably retained thereon by an elongated, flat connector member (60) having an untapered side periphery. The connector member longitudinally extends through aligned point and connector openings (56; 44, 46) and blocks forward removal of the point (12) from the adapter nose. A transverse point sidewall abutment surface (50) facing one end (74/66) of the installed connector member prevents it from moving outwardly through one of the point openings, and a rotatable lock member (62) carried by the other end (72/64) of the connector member and engageable with a groove in the other point opening (44) releasably prevents the connector member from moving outwardly through the grooved point opening. A detent structure (90) releasably holds the lock member in locking and unlocking orientations in which the lock member is prevented from moving parallel to the length of the connector member.

Une pointe de dent pour creusement (12) est emboîtée sur un nez de porte-pointe (24) sur lequel elle est fixée libérable par une clavette plate de forme allongée (60) au pourtour non biseauté. La clavette traverse longitudinalement des orifices alignés de la pointe et de la structure de raccordement (56; 44, 46) et empêche le retrait par l'avant de la pointe (12) par rapport au nez du porte-pointe. Dans la pointe, une surface de butée (50) située en face d'un des extrémités (74/66) de la clavette montée empêche cette dernière de se déchausser par l'une des ouvertures de la pointe, et un frein rotatif (62) disposé sur l'autre extrémité (72/64) de la clavette et s'engageant dans une gorge dans l'autre ouverture de la pointe (44) empêche de manière libérable la clavette de se déplacer vers l'extérieur par l'ouverture à gorge de la pointe. Une structure à cran (90) maintient libérable le freine selon des orientations de verrouillage et de déverrouillage dans lesquelles l'élément de verrouillage ne peut pas se déplacer parallèlement à la clavette.

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