Dy-namics of the movement of the elastically fixed working body of the cultivator machine-tractor aggregates

Tillage machines that have in their design elastic links in the fastening -f w-rking organs, under certain conditions, can generate active undamped -scillati-ns -f w-rking b-dies due t- the peculiarity -f the cutting pr-cess -f the s-il layer, which all-ws t- reduce the -verall level -f f-rce l-ading and the dynamism -f the functi-ning -f the entire system. At the same time, the questi-n -f the effect -f vibrati-ns -f the w-rking -rgan -n the agr-technical indices -f the -perati-n -f machine-tract-r aggregates, in particular -n the deviati-n -f the pr-cessing depth fr-m the mean value, bec-mes t-pical. The mathematical m-del describing dynamics -f m-vement -f the elastically fixed w-rking b-dy -f the cultivat-r machine-tract-r aggregates, taking int- acc-unt the f-rce, elastic and dissipative characteristics -f the links -f the system is c-nsidered in the article. Dissipative pr-perties -f s-il in the w-rk are characterized by the c-efficient -f attenuati-n -f the s-il envir-nment. The rigidity -f the elastic element in the attachment -f the w-rking member was determined fr-m the c-nditi-n that the frequency -f the natural -scillati-ns -f the system and the frequency -f the disturbing f-rce be equal, which c-rresp-nds t- a res-nant m-de -f -perati-n. Calculati-n -f this mathematical m-del all-wed t- determine the r--t-mean-square deviati-n -f the treatment depth and c-mpare its value with the value -f the devel-ped techn-l-gical t-lerance f-r the change in the rigidity -f the elastic element in the fastening -f the w-rking member, as a result -f which the f-ll-wing c-nclusi-ns were made: the use -f the self--scillati-n m-de -f the w-rking -rgans can significantly influence -n the stability -f the w-rking b-dy in the vertical plane, especially this affects the s-ils with weak dissipative pr-perties, It can be assumed that significant amplitude -scillati-ns -f the w-rking element in the h-riz-ntal plane can lead t- an increased abrasi-n -f the s-il backgr-und by the w-rking -rgan and, as a c-nsequence, t- an increase in the number -f er-ding particles in the s-il and the devel-pment -f wind er-si-n.

elastic element, w-rking b-dy -f the cultivat-r, s-il backgr-und, pr-cessing depth, tracti-n resistance