| 摘要 |
An apparatus (10) for use in shearing paving material applied to a surface is provided. The apparatus includes a blade (80) for shearing the asphalt mixture to a desired thickness, cylinders (56) for raising and lowering the blade in response to elevational changes in the surface, at least one signal generator (110) associated with each cylinder and adapted to produce a signal indicative of the elevation of the surface, and at least one signal receiver (112) associated with each signal generator. The blade apparatus is coupled with a prime mover (14). The receiver is operable to activate the cylinders in response to a signal received from the generator. The blade is raised and lowered as the elevation of the surface changes in response to signals emanating from the generator allowing surface level variations to be evened out while paving.
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