Assembly for securing an excavating tooth
First Claim
Patent Images
1. An assembly for mounting a wear member to excavating equipment comprising:
- a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion, wherein the front bearing surface and the abutting surface are each curved in two perpendicular directions; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base.
4 Assignments
0 Petitions
Accused Products
Abstract
An assembly for mounting an excavating tooth particularly suited for a dredge cutterhead includes a base, an adapter, and a lock. The base includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfaces are able to maintain substantially full contact with each other under transverse loading.
115 Citations
45 Claims
-
1. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion, wherein the front bearing surface and the abutting surface are each curved in two perpendicular directions; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, an abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base, the lock including an actuator and a resilient member, wherein when the lock is in the opening the actuator is operable to draw the wear member on the base into a tighter fit and to compresses the resilient member, and wherein the resilient member expands the lock to tighten the engagement of the wear member on the base as wear develops in the assembly. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion, wherein the front bearing surface and the abutting surface are each mutually curved at substantially the same radius of curvature and are each curved in two perpendicular directions; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction an thereby hold the wear member to the base. - View Dependent Claims (25, 26, 27, 28)
-
-
29. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface, wherein the front and rear bearing surfaces are each curved in two directions;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base. - View Dependent Claims (30, 31, 32)
-
-
33. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base, wherein the lock includes a first contact surface that opposes the bearing wall, a second contact surface that opposes the rear bearing surface, an actuator that selectively moves the first and second contact surfaces away from each other to tighten the engagement of the wear member on the base, a front member, a rear member and a resilient member therebetween, wherein the actuator is adapted to compress the resilient member between the front and rear members when the lock is in the opening such that the resilient member can tighten the wear member on the base as wear occurs between the wear member and the base. - View Dependent Claims (34, 35, 36, 37, 39)
-
-
38. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base, wherein the lock includes a contact surface in engagement with the rear bearing surface, and the contact surface and the rear bearing surface are each curved in two perpendicular directions.
-
-
40. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface, wherein the rear bearing surface is curved, the front and rear bearing surfaces are each defined by a radius of curvature, and the radii of curvature for the front and rear bearing surfaces have the same origination point;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base. - View Dependent Claims (41)
-
-
42. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base, wherein the lock includes a first contact surface that opposes the bearing wall and a second contact surface that opposes the rear bearing surface, wherein the lock further includes an actuator that selectively moves the first and second contact surfaces away from each other to tighten the engagement of the wear member on the base, and wherein the actuator includes a screw, the free end of which defines one of the first and second contact surfaces. - View Dependent Claims (43)
-
-
44. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base, wherein the lock includes an actuator and a resilient member, and wherein the actuator compresses the resilient member and the resilient member expands the lock to tighten the engagement of the wear member on the base.
-
-
45. An assembly for mounting a wear member to excavating equipment comprising:
-
a base adapted to be fixed to a digging portion of an excavator, the base including a first coupling configuration, a convex front bearing surface curved across substantially the entire front bearing surface, and a rear bearing surface;
a wear member including a second coupling configuration that fits with the first coupling configuration to prevent release of the wear member except in a release direction, a concave abutting surface curved across substantially the entire abutting surface to abut the front bearing surface, an opening having a bearing wall, and a forwardly projecting working portion; and
a lock received into the opening to oppose the rear bearing surface and the bearing wall of the opening to prevent release of the coupling configurations in the release direction and thereby hold the wear member to the base, wherein the lock includes a first contact surface that opposes the bearing walls and a second contact surface that opposes the rear bearing surface, wherein the lock further includes an actuator that selectively moves the first and second contact surfaces away from each other to tighten the engagement of the wear member on the base, and wherein the second contact surface and the rear bearing surface are each curved, and the second contact surface and the rear bearing surface each define a spherical segment.
-
Specification