the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to u0442u0440u0430u043du0441u0430u043eu0440u0442u043du043eu043cu0443 material handling equipment. the purpose of the invention is improving the accuracy. a rope 4 round rollers 1 to 3, u0441u0432u00a0u0437u0430u043du043du044bu0435 with w - u043eu0439u0440u0430u0437u043du044bu043c u0447u0435u0442u044bu0440u0435u0445u0437u0432u0435u043du043du0438u043au043eu043c 7 with u0440u043eu043cu0431u043eu0432u0438u0434u043du044bu0439 u0447u0435u0442u044bu0440u0435u0445u0437u0432u0435u043du043du0438u043a 8, in the small diagonal which set of springs and 9 and a switch 6.if excessive high water spring 9 u0440u0430u0441u0442u00a0u0433u0438u0432u0430u0435u0442u0441u00a0 and roller 3 u043fu0435u0440u0435u043cu0435u0449u0430u0435u0442u0441u00a0 left, u0433u043cu0447 u0447u0442u043eu043c actuated switch 6. 1 il.
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