Ibhola eZilungelelanisayo
-
Iringi yangaphakathi ineendlela ezimbini zomdyarho, ngelixa umsesane wangaphandle unomdyarho ongqukuva kunye nombindi ogobileyo womphezulu ongqukuva olungelelaniswe nombindi wokuthwala. Ngoko ke, iringi yangaphakathi, ibhola, kunye nekheji zinokuthambeka ngokukhululekileyo ukuya kwiringi yangaphandle. Ke ngoko, ukuphambuka okubangelwa yimpazamo yomatshini we-shaft kunye nebhokisi yokuthwala inokulungiswa ngokuzenzekelayo.
Iringi yangaphakathi ene-tapered hole yokuthwala ingafakwa ngomkhono wokuvala.