Wear assembly for excavator digging edge
First Claim
1. A wear assembly for attachment to an excavator having a lip with an inner face, an outer face and a front edge face, the wear assembly comprising:
- a boss adapted to be fixed to the lip, the boss including a front part having a first face extending generally along the front edge face of the lip, a body extending rearwardly of the front part along one of the inner and outer faces of the lip and a passage that opens to a side by the inner face and to a side by the outer face, the passage including a first bearing surface facing in a generally rearward direction, the front part and the body defining a gap for receipt of the lip with the gap being laterally open at opposite ends of the first face to accommodate a lateral extension of the lip;
a wear member received over the boss and including an aperture generally aligned with the passage, and a second bearing surface associated with the aperture and facing in a generally forward direction; and
a lock received in the aperture and the passage to be in opposition to the first and second bearing surfaces to hold the wear member to the boss.
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Accused Products
Abstract
A wear assembly that includes a wear member and a boss to define an opening for receiving a lock forward of the front edge face of the lip which can mount the wear member in a stable and balanced manner without a through-hole in the lip. The wear member includes an aperture and a rib to define bearing faces on opposite sides of a central plane of the lip. The boss includes rails to hold the wear member in place, and a brace at the rear end, which supports the rails on the boss, abuts the rear of the wear member to reduce the loading on the lip, and deflects earthen material away from the wear member under reverse loading.
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Citations
92 Claims
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1. A wear assembly for attachment to an excavator having a lip with an inner face, an outer face and a front edge face, the wear assembly comprising:
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a boss adapted to be fixed to the lip, the boss including a front part having a first face extending generally along the front edge face of the lip, a body extending rearwardly of the front part along one of the inner and outer faces of the lip and a passage that opens to a side by the inner face and to a side by the outer face, the passage including a first bearing surface facing in a generally rearward direction, the front part and the body defining a gap for receipt of the lip with the gap being laterally open at opposite ends of the first face to accommodate a lateral extension of the lip;
a wear member received over the boss and including an aperture generally aligned with the passage, and a second bearing surface associated with the aperture and facing in a generally forward direction; and
a lock received in the aperture and the passage to be in opposition to the first and second bearing surfaces to hold the wear member to the boss. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 65, 66, 67, 68, 69)
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21. A wear assembly for attachment to an excavator having a lip with an inner face, an outer face and a front edge face, the lip defining a central plane extending medially between the inner and outer faces, the wear assembly comprising:
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a boss adapted to be fixed to the lip and including a first bearing surface facing generally in a rearward direction;
a wear member received over the boss and including an aperture, a second bearing surface and a third bearing surface, the second bearing surface being on an inner side of the central plane, and the third bearing surfaces being on an outer side of the central plane, each of the second and third bearing surfaces facing in a generally forward direction; and
a lock received in the aperture to be in opposition to the bearing surfaces to hold the wear member to the boss. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 70, 71, 72, 73, 74)
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36. A wear member for attaching to a lip of an excavator wherein a boss is fixed to the lip, the wear member comprising:
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a front working portion; and
a rear mounting portion adapted to overlie the boss when installed on the lip, the rear mounting portion including a pair of legs, a first of the legs including an aperture for receiving a lock therein, and a second of the legs including a rib generally opposed to the aperture and extending toward the aperture, the aperture and the rib each including a face to engage the lock and hold the wear member to the lip. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43)
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44. A boss for attachment of a wear member to a lip of an excavator, the lip having an inner face, an outer face and a front edge face interconnecting the inner and outer faces, the boss comprising:
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a front part extending along a front edge face of the lip and having a forwardly facing front surface;
a body extending rearwardly of the front part and along one of the inner and outer faces of the lip;
an opening for receiving a lock securing the wear member to the boss; and
a groove in the front part that opens in the front surface and in the opening for the passage of a part of a wear member to the opening to cooperate with the lock. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 75, 76, 77)
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54. A boss for attachment of a wear member to a lip of an excavator, the lip having an inner face, an outer face and a front edge face interconnecting the inner and outer faces, the boss comprising:
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a body including an inner surface adapted to be fixed to one of the inner and outer faces of the lip, and a pair of spaced rails, each rail including a holding surface spaced outward of the inner surface and facing generally in the same direction as the inner surface to hold a wear member to the lip; and
a brace rearward of the body and having an inner face adapted to be fixed to the lip, and a front face fixed to the rails to provide support therefor. - View Dependent Claims (55, 56, 57, 58, 59, 78, 79, 80)
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60. A boss for attachment of a wear member to a lip of an excavator, the lip having an inner face, an outer face and a front edge face interconnecting the inner and outer faces, the boss comprising:
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a body including an inner surface adapted to be fixed to one of the inner and outer faces of the lip, the body being adapted to be received in a corresponding groove formed in the wear member; and
a brace rearward of the body and having an inner face adapted to be fixed to the lip, and a front face that extends beyond the body in a transverse direction to form an abutment against which a rear wall of the wear member abuts so as to resist rearward deflection of the wear member. - View Dependent Claims (61, 62, 63, 64, 81, 82, 83)
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84. A boss for attachment of a wear member to a lip of an excavator, the lip having an inner face, an outer face and a front edge face interconnecting the inner and outer faces, the boss comprising:
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a front part extending along the front edge face of the lip and at least partially extending transversely outward of one of the inner and outer faces of the lip, the front part including a rearward facing end wall transversely outward of one of the inner and outer faces to abut a lock to hold the wear member in place;
a body extending rearward of the front part and along one of the inner or outer faces of the lip, the body being on a side of the lip opposite the end wall of the front part, the body having an inner surface to be fixed to the lip and opposite sidewalls, each sidewall including a rail projecting therefrom and spaced from the inner surface so as to be spaced from the lip when the boss is attached thereto; and
an opening for receiving a lock securing the wear member to the boss. - View Dependent Claims (85, 86)
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87. A wear assembly for attachment to an excavator having a lip with an inner face, an outer face and a front edge face, the wear assembly comprising:
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a boss adapted to be fixed the lip, the boss including a body extending generally away from the front edge face along one of the inner and outer faces, and a brace rearward of the body and extending transverse to the body, the brace including a forwardly facing abutting surface;
a wear member including a groove to receive the body of the boss, and a rear wall to abut the forwardly facing abutting surface and resist rearward directed forces on the wear member; and
a lock to hold the wear member to the lip. - View Dependent Claims (88, 89, 90, 91, 92)
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Specification