| 摘要 |
<p>An improved positioning device for concaves of cone crushers including a supporting surface formed above a tapered inclined surface of a top cell and projecting inwardly, the supporting surface having slots symmetrically provided thereon for receiving and positioning lower positioning elements, and an annular flange disposed on the supporting surface. Opposite to the upper contact face of the supporting surface, the annular flange is provided with symmetrically distributed projections. Each projection is provided with a groove at a bottom edge thereof for receiving an upper positioning element mounted in place by a sunk-head bolt. A lower end face of the upper positioning element is configured to have a tapered surface that matches the respective one of the lower positioning elements. Furthermore, upper surfaces of the projections are provided with symmetrical key slots that are equivalent to the projections in number for mounting of stop blocks using sunk-head bolts. After mounting, the stop blocks project a certain distance from the key slots. The upper periphery of the concave is configured to have flange portions that are equivalent to the projections of the annular flange in number. After the concave has been installed, the flange portions urge against the sides of the stop blocks sideways.</p> |
