Øòóðâàë çàäâèæêè. Óïëîòíèòåëüíûå êîëüöà. Øïèíäåëü

Øïèíäåëü. Øòóðâàë çàäâèæêè. Óïëîòíèòåëüíûå êîëüöà

Óïëîòíèòåëüíûå êîëüöà ÿâëÿþòñÿ òåì âèäîì òîâàðà, áåç êîòîðîãî íîðìàëüíàÿ ðàáîòà ìíîãèõ óñòðîéñòâ, ïðîñòî íå ïðåäñòàâëÿåòñÿ âîçìîæíîé. Êàê ïðàâèëî, òàêèå êîëüöà èìåþò êðóãëîå ñå÷åíèå è ïðÿìîóãîëüíîå ñå÷åíèå. Êðîìå òîãî, åñòü åùå óïëîòíèòåëüíûå êîëüöà, êîòîðûå èñïîëüçóþòñÿ äëÿ âòóëî÷íî-ïàëüöåâûõ ìóôò êàê îòå÷åñòâåííîãî, òàê è èìïîðòíîãî ïðîèçâîäñòâà. Ìàòåðèàëîì äëÿ òàêèõ êîëåö ìîæåò âûñòóïàòü ðåçèíà, è ìíîæåñòâî äðóãèõ ìàòåðèàëîâ. Ñòîèò ñêàçàòü, ÷òî ãëàâíàÿ çàäà÷à óïëîòíèòåëüíûõ êîëåö ýòî óñòðàíåíèå â ñìàçî÷íûõ, ïíåâìàòè÷åñêèõ, ãèäðàâëè÷åñêèõ è òîïëèâíûõ ìåõàíèçìàõ çàçîðîâ. Îñíîâíûì ìàòåðèàëîì, êîòîðûé âûñòóïàåò äëÿ ïðîèçâîäñòâà óïëîòíèòåëüíûõ êîëåö, ÿâëÿåòñÿ ðåçèíà îáùåãî íàçíà÷åíèÿ. Îäíàêî, åñëè ñðåäà èõ èñïîëüçîâàíèÿ îòëè÷àåòñÿ îò íîðìàëüíîé, òî è ìàòåðèàë, èç êîòîðîãî áóäóò èçãîòàâëèâàòüñÿ óïëîòíèòåëüíûå êîëüöà, áóäåò áîëåå ïðî÷íûì. Òàê, äëÿ èñïîëüçîâàíèÿ â äèàïàçîíå òåìïåðàòóð îò -60 è äî +280 ãðàäóñîâ ïî Öåëüñèþ, ìàòåðèàëîì äëÿ êîëåö áóäåò ñëóæèòü ñèëèêîíîâàÿ ðåçèíà. Åñëè æå äàííûå êîëüöà èñïîëüçóþòñÿ â êèñëîòíîé èëè ùåëî÷íîé ñðåäå, è ïðè âûñîêîé òåìïåðàòóðå, òî äëÿ ýòèõ öåëåé ñëåäóåò ïðèìåíÿòü óïëîòíèòåëüíûå êîëüöà, èçãîòîâëåííûå èç ôòîðêàó÷óêà, äîïóñòèìûé ðåæèì ðàáîòû êîòîðîãî ðàâåí îò -20 è äî +25 ãðàäóñîâ ïî Öåëüñèþ. Äëÿ òåõ ñëó÷àåâ, êîãäà òðåáóåòñÿ ïîëó÷èòü ìàêñèìàëüíî ïðî÷íûå êîëüöà óïëîòíèòåëüíûå, èõ èçãîòàâëèâàþò èç ïîëèóðåòàíà, èçíîñîñòîéêîñòü êîòîðîãî â òðè ðàçà ïðåâûøàåò äàííûé ïàðàìåòð ó ðåçèíû. Ïîìèìî ïîëèóðåòàíà, ìîæíî èñïîëüçîâàòü òàêèå ìàòåðèàëû, êàê òåõíè÷åñêàÿ êîæà è ôòîðîïëàñò.

Âåñîìûì ýëåìåíòîì, âõîäÿùèì â ñîñòàâ çàäâèæêè, ÿâëÿåòñÿ øïèíäåëü. Ñòîèò çàìåòèòü, ÷òî øïèíäåëü ïðåäñòàâëÿåò ñîáîé êèíåìàòè÷åñêîå óñòðîéñòâî, âûïîëíÿþùåå òàêèå äåéñòâèÿ êàê ïåðåäà÷à êðóòÿùåãî ìîìåíòà îò èñïîëíèòåëüíîãî ìåõàíèçìà èëè æå äâèãàòåëÿ, è äî áëîêà àðìàòóðû, îñóùåñòâëÿþùåãî çàïèðàíèå èëè ðåãóëèðîâàíèÿ. Åñëè ïîñìîòðåòü íà ðàçëè÷íûå ìîäåëè çàäâèæåê, òî ó áîëüøèíñòâà èç íèõ îòëè÷èòåëüíîé îñîáåííîñòüþ áóäåò êàê ðàç øïèíäåëü.

Óïðàâëåíèå çàäâèæêàìè îñóùåñòâëÿåòñÿ äâóìÿ ñïîñîáàìè ðó÷íûì è àâòîìàòè÷åñêèì. Ê íàèáîëåå ÷àñòî èñïîëüçóåìîìó, îòíîñèòñÿ ðó÷íîé ñïîñîá ïîñðåäñòâîì òàêîãî óçëà çàäâèæêè, êàê øòóðâàë çàäâèæêè. Êàê ïðàâèëî, ñàì øòóðâàë çàäâèæêè ïðîèçâîäÿò èç ïðî÷íîé ñòàëè. åñëè çàäâèæêà î÷åíü áîëüøàÿ, òî äîïîëíèòåëüíî ê òàêîìó óñòðîéñòâó, êàê øòóðâàë çàäâèæêè, ñòàâèòñÿ åùå è ðåäóêòîð.




 
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