Excavator John Deere 200-6210 olupin hydraulic iwon solenoid àtọwọdá

     Ifilelẹ hydraulic valve akọkọ ti n pese epo nigbagbogbo, ṣugbọn nigbati titẹ hydraulic ba ga ju, yoo fa ibajẹ. Nitorinaa, Circuit hydraulic ti ni ipese pẹlu àtọwọdá aponsedanu lati ṣe idiwọ ibajẹ si fifa soke. Awọn hydraulic cylinder ti gun ju, tabi kuru ju, tabi hydraulic cylinder ati motor hydraulic fi agbara pupọ kun, ki hydraulic cylinder ati motor hydraulic duro, epo ti a firanṣẹ nipasẹ fifa omiipa ko ni lọ, nitorina pe ẹrọ hydraulic ni agbara lati nwaye, titẹ hydraulic ga soke pupọ, ati fifa jẹ ẹru nla. Eyi yoo mu ibajẹ si fifa soke, lati le jẹ ki titẹ hydraulic dide si iwọn kan, epo lati inu fifa yoo pada si epo epo ti o ṣiṣẹ, o jẹ dandan lati fi sori ẹrọ ọna iṣan omi, ki titẹ hydraulic ko ni. dide ga ju. Ni akoko kanna, titẹ iderun ti àtọwọdá iderun tun le ṣe atunṣe lati pinnu iye kg / cm2 ti a gba laaye lati dide. Àtọwọdá iderun jẹ iṣẹ ti a ṣalaye loke ati ti fi sori ẹrọ ni Circuit laarin fifa hydraulic ati àtọwọdá iṣakoso, ṣugbọn o ti gbe papọ pẹlu àtọwọdá iṣakoso. Ti o ba ti awọn majemu ti awọn iderun àtọwọdá ko dara, awọn kekere titẹ yoo ṣii, ki o si awọn hydraulic titẹ yoo ko lọ lori, ati awọn agbara ti awọn hydraulic cylinderen ati awọn hydraulic motor yoo jẹ alailagbara. Ni afikun, ti àtọwọdá iderun ko ba ni ibatan, nigbati titẹ ba dide, yoo fa jijo epo, ati nikẹhin epo lati inu fifa ati jijo epo jẹ kanna, titẹ hydraulic ko le dide ga julọ, ki awọn agbara ti silinda hydraulic ati ọkọ ayọkẹlẹ hydraulic jẹ alailagbara