Concrete extrusion machine and spiral conveyor therefor

摘要: A spiral conveyor (27) for a concrete extrusion machine (20) has first section (100) with external diameter (d1). There is second (102) having (d2) which greater than the The spaced apart from section. third (110) between and (102). end of connected to adjacent may be mounted on hollow shaft (140) (110). two longitudinally divided components (130, 132), each recess (134, 136) therein. Connectors (168) interconnect locking device (142, 144)