Cutter drum for pavement profiler

• US 4,697,850 A
• Filed: 02/06/1986
• Issued: 10/06/1987
• Est. Priority Date: 02/06/1986
• Status: Expired due to Term

• Current Assignee: Dynapac Manufacturing Incorporated
• Original Assignee: Dynapac Manufacturing Incorporated
• Inventors: Tuneblom, Eskil
• Primary Examiner(s): Novosad, Stephen J.
• Assistant Examiner(s): SMITH, MATTHEW J
• Application Number:
  US06/827,273
• Time in Patent Office: 607 Days
• Field of Search: 299/39, 299/87, 299/88, 299/89, 299/91, 299/93, 404/90
• US Class Current: 299/87.1
• CPC Class Codes: B28D 1/188 with exchangeable cutter bits or cutter segments
• CPC Class Codes: E21C 25/10 Rods; Drums
• CPC Class Codes: E21C 35/18 Mining picks; Holders therefor planing knives E21C27/44

Abstract

A cutter drum for pavement profiler machines has readily replaceable hardened tooth holders bolted to mounting bases. The teeth and holders function over extended periods of time without excessive wear. The tooth holder mounting bases, which have overlapping portions through which a bolt extends to hold the tooth holder in position, are formed of softer steel readily weldable to the cutter drum surface. Complementary surfaces on each of the tooth holders and an adjacent mounting base resist forces acting on the teeth during cutting operations.

Claims

1. A cutter drum for a pavement profiler comprising a drum, mounting bases welded to the drum surface in a selected spiral-like configuration with a portion of one base overlapping a portion of an adjacent base, tooth holders associated with the mounting bases, a cutting tooth removably held by each tooth holder, a bolt extending through the overlapping base portions and one of the associated tooth holders to secure the holder to the bases, complementary and engaging surfaces on each of the tooth holders and an adjacent one of the bases, the complementary and engaging surfaces being located on the side of the tooth holder opposite to the tooth so that the forces acting on the tooth during cutting operations are resisted by the adjacent base.

2. A cutter drum as defined in claim 1, in which the tooth holders are formed of hardened steel and the mounting bases are formed of readily weldable steel.

3. A cutter drum for a pavement profiler comprising a drum, first mounting bases welded to the drum surface in a selected spiral-like configuration with a portion of one base overlapping a portion of an adjacent base, tooth holders associated with the first mounting bases, a cutting tooth removably held by each tooth holder, a bolt extending through the overlapping base portions and one of the associated tooth holders to secure the holder to the first bases, first complementary and engaging surfaces on each of the tooth holders and an adjacent one of the first bases, the first complementary and engaging surfaces being located on the side of the tooth holder opposite to the tooth so that the forces acting on the tooth during cutting operations are resisted by the adjacent base, curb side and drive side mounting bases welded to curb and drive side edges of the drum surface, a tooth and tooth holder associated with each curb side and drive side mounting base, a bolt extending through each of the curb side and drive side bases to secure one of the tooth holders to each said base, second complementary and engaging surfaces on each curb side and drive side tooth holder and its associated base, the second complementary surfaces located on the side of the tooth holder opposite to the tooth so that the forces acting on the tooth during cutting operations are resisted by the associated base, wherein said curb side and drive side mounting bases, and therefore said associated teeth, are oriented in a selected configuration to provide clean cuts along the edges of pavement strips.

4. A cutter drum as defined in claim 3, in which the tooth holders are formed of hardened steel, and the curb side mounting bases, the drive side mounting bases, and the first mounting bases employ interchangeable tooth holders and are formed of readily weldable steel.

5. A cutter drum for a pavement profiler comprising a drum, first mounting bases welded to the drum surface in a selected spiral-like configuration with a portion of one base overlapping a portion of an adjacent base, tooth holders associated with the first mounting bases, a cutting tooth removably held by each tooth holder, a bolt extending through the overlapping base portions and one of the associated tooth holders to secure the tooth holder to the first bases, first complementary and engaging surfaces on each of the tooth holders and an adjacent one of the first bases, the first complementary and engaging surfaces being located on the side of the tooth holder opposite to the tooth so that the forces acting on the tooth during cutting operations are resisted by the adjacent base, curb side and drive side base segments welded to curb side and drive side edges of the drum surface, each base segment including a plurality of transverse cut-outs, a support plate welded in each cut-out, a tooth and tooth holder positioned in each cut-out and bolted to the support plate, second complementary and engaging surfaces on each curb side and drive side tooth holder and its associated cut-out, the second complementary surfaces located on the side of the tooth holder opposite to the tooth so that the forces acting on the tooth during cutting operations are resisted by the associated base segment, at least some of the support plates being welded at different angles to the drum surface, and therefore the teeth are oriented in a selected configuration to provide clean cuts along the edges of pavement strips.

6. A cutter drum for a pavement profiler including a drum having a curb side and a drive side, cutting teeth mounted on said drum in a selected configuration between said curb side and drive side, and a curb side and a drive side cutting arrangement, said arrangement comprising curb side and drive side base segments welded to curb side and drive side edges of the drum surface, each base segment including a plurality of transverse cut-outs, a support plate welded in each cut-out in a selected orientation to the base segment to provide a desired tooth profile along the curb and drive sides, a tooth and tooth holder positioned in each cut-out and bolted to the support plate, each tooth projecting generally in one direction from one side of the tooth holder, each cut-out having a complementary surface associated with its tooth holder, a complementary surface on each tooth holder located on the side of the tooth holder opposite to the direction of tooth projection and engaging the complementary cut-out surface so that the forces acting on the tooth during cutting operations are resisted by the complementary engaging surfaces and hence the associated base segment, at least some of the support plates being welded at different angles to the drum surface, and therefore the teeth are oriented in a selected configuration to provide clean cuts along the edges of pavement strips.