A BEARING SYSTEM FOR A SAND CONTAINER TO BE VIBRATED IN A LOST FOAM CASTING APPARATUS

摘要

Bearing members (11) project upwardly from a vibrating table (10) with frusto - conical surfaces (12a) tapering upwardly to engage in corresponding frusto - conical sockets (15} disposed in the bottom of a container of sand to be compacted. The frusto - conical sockets (15) are formed of a material resistant to wear. The bearing members (11) each comprise a body of wearable material (17) which forms the frusto - conical surface (12a). Each wearable body is fixed to the vibrating table (10) by means of a respective releasable fastening element (18) elongated in a vertical direction and having an upper head (18a) shaped to transmit and distribute a compression pre-load into the body (17).