Kungani i-hoist yeketango lamamitha angu-1 ton 3 ishelela?

I-1-ton 3-meter chain hoist izoshelela ngemva kokusetshenziswa isikhathi esithile. Kwenzekani? Ngezansi umhleli we-Chenli uzokunikeza isingeniso esiningiliziwe:

Ukushelela kwe-inverted chain hoist kungenxa yokuthi kunenkinga ngemishini. Ngalesi sikhathi, kuyadingeka ukuyeka ukusebenza futhi uhlole imishini. Uma ungasebenzi ngokuya ngomthwalo obekiwe wokuphakamisa kanye nokugcwala ngokweqile, ukushelela kuzokwenzeka; ngesikhathi sokusetshenziswa kwansuku zonke, ipuleti le-friction ligcotshwe ngamafutha nokunye ukungcola, okunciphisa amandla okungqubuzana kanye nokushelela nakho kuzokwenzeka; ukungqubuzana kwekhwalithi ephansi Uma izindwani ziqhubeka ziba mncane ngesikhathi sokusetshenziswa, kungenzeka ukushelela; uma intwasahlobo ku-pawl kudivayisi yokubhuleka ixega, ukushelela kungase kwenzeke.