| 摘要 |
PURPOSE:To prevent the tansmission of vibration caused by a vibrator to a shovel excavator body by a method in which the handle portion of the lever of an arm is fitted into the socket at the basal portion of the arm, and the lever and the basal portion are connected with each other through a vibration-proof rubber. CONSTITUTION:An arm 2 is attached to the basal portion of the front attachment of a shovel excavator. The arm 2, consisting of a footing 2a and a lever 2b, is pivotally attached with a bucket 3, and the footing 2a of a hollow box form of the arm 2 serves to support a socket 11 through a vibration-proof rubber 10. When the handle 2b-1 of the lever 2b is fitted into the socket 11 and screwed with a fitting bolt 12, the footing 2a and lever 2b of the arm 2 are connected ghrough the vibration-proof rubber. Vibration generated by a vibrator V is not transmitted to the shovel excavator body, so that no adverse effects are exerted to the excavator body and no inconvenience occur to the comfort of the driver. |
