| 摘要 |
PURPOSE:To detect the blockage of articles to be transferred and prevent a detector from breakage by providing the detector for detecting the blockage of said article in an article transferring path and withdrawing the detector from the path when it receives any load larger than the blockage detection. CONSTITUTION:An apparatus 10 for circulating secondary articles (mixture of corn grains and foreign substances) after rocking and sorting for example in a grain threshing machine is constituted from a corn lifting blade 11 provided on the terminal end of a shaft of a secondary article transferring spiral 7 and an outer tube 12 formed with a transfer path A. Thus, near the corn lifting blade 11 on the inner wall surface 13 formed with the transfer path A is formed an opening 14 communicating to the secondary article transferring spiral 7. And a detector 1 is constituted from a case 15 having a built-in limit switch and a pressure sensitive surface 16 consisting of elastic materials, and a detector mounting plate 17 is mounted to close an opening 14 with the pressure sensitive surface 16 being adjacent the transfer path A. Thus, if the secondary article is blocked in the the transfer path A the detector 1 is withdrawn from said path A. |
