| 摘要 |
A machine includes a base, a main housing that is freely rotatable and supported on the base. The main housing includes a generally horizontal surface. The machine also includes a drum mounted on said main housing, a boom extending from said main housing, a bucket operatively connected to and supported by the boom, a wire rope extending between the drum and the bucket for movement of the bucket, a fairlead disposed on the main housing along a path of the wire rope. The wire rope passes through the fairlead between the drum and the bucket. A dynamic dampening mechanism is disposed on the fairlead, the dynamic dampening mechanism including a dampening fluid having a variable viscosity in response to an electrical current applied thereto. |
