| 摘要 |
An impact hammer (1 ) for breaking, levering and raking material, the hammer (1 ) including: a movable mass capable movement along an impact axis (14), an elongated tool (23) having a longitudinal axis substantially parallel or coaxial with the impact axis(14), a primary pivot (6) attachment point for attaching the hammer (1 ) to a distal end of an operating arm (2) attached to the carrier for pivotal movement of the hammer (1 ) about a primary axis (6) orthogonal to the impact axis (14); an articulated control linkage (3) including first (4) and second links (5) for effecting pivotal movement of the hammer (1 ) about the primary axis (6) in response to movement from a drive attached to the operating arm (2), the first link (4) being pivotally attachable: to the hammer (1) at a first end to form a secondary pivot axis (8) parallel to said primary axis (6), at a second end to the drive forming a tertiary pivot point axis (12) and to the second link (5), the second link (5) being pivotally attachable at a first end to the operating arm (2) forming a quaternary pivot axis (13) parallel to the secondary (8) and tertiary axes(12), at a second end to the second end of the first link (4) and at a second end to the drive, characterised in that the primary (6), tertiary (12) and quaternary (13) pivot axes are all located on an opposing side of the impact axis (14) to the secondary pivot axis (8), wherein the primary pivot axis (6) is located laterally to the impact axis (14) between the opposed distal ends of the tool (23). |
