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Offroad Team ARO • View topic - Trolii hidraulice
     
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 Post subject: Re: Trolii hidraulice
PostPosted: Mon Dec 12, 2011 10:37 pm 
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 Post subject: Re: Trolii hidraulice
PostPosted: Mon Dec 12, 2011 11:36 pm 
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Nu stiu exact randamentul acestor pompe la troliere insa presiunea dezvoltata de acestea este destul de redusa



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 Post subject: Re: Trolii hidraulice
PostPosted: Tue Dec 13, 2011 10:21 am 
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Intradevar, trebuie o pompa zemoasa... cea standard nu e buna nici macar pt servodirectie.

Pentru troliile hidraulice Ramsey se propune o pompa hidraulica ZF, pe fulie, ca accesoriu, daca a masinii nu face fata. Sfatul meu, dupa experienta lui Ama ar fi ca merge o pompa de Cobra (care incidental e tot ZF de fapt) si care ar duce atat directia cat si hidraulica - totul cu o singura pompa... trebe decat nijte furtune...


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 Post subject: Re: Trolii hidraulice
PostPosted: Tue Dec 13, 2011 10:27 am 
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Cabestan are dreptate cu o singura pompa (sunt pompe pe fulie de peste 120 bari), dar intervine problema semeringului de la caseta de directie. Cu siguranta acesta nu rezista la o presiune asa de mare. Cel mai bine e sa ai la directie (caseta originala) o presiune de pana 75-80 de bari si pt troliu cat mai zemoasa, deci doua pompe



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1984 Mercedes-Benz W123 300D Kombi
1994 Yamaha Virago XV 535
1999 Yamaha XT 600
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 Post subject: Re: Trolii hidraulice
PostPosted: Tue Dec 13, 2011 1:06 pm 
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 Post subject: Re: Trolii hidraulice
PostPosted: Thu Dec 15, 2011 7:06 pm 
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Din cercetarile mele de pana acum, am aflat urmatoarele:
TAF-ul are troliu antrenat mecanic, prin cardan. Se pare ca exista si unele variante de troliu hidraulic. De asemenea, TAF-ul are o pompa hidraulica, destul de mica, dar care nu se poate monta direct pe motorul de BV. Aceasta pompa dezvolta 160 bari la 2200 rot / min (cea cu carcasa de aluminiu) si 250 de bari la 2200 rot / min (cea cu carcasa de fonta). La ambele, debitul este de 60 l / min. In Focsani, preturile sunt urmatoarele: 550 lei pentru cea de fonta si 430 lei pentru cea de aluminiu.
Un hidromotor tot de pe la TAF are nevoie de 60 l ulei / min, la o presiune de minim 160 bari. Nu stiu pretul.
Exista si o varianta cu pompe de tractor (PRD 2 - Pompe cu Roti Dintate) - pentru tiranti, care dezvolta presiuni de 250 de bari, la un volum de 10 cm cubi / rotatie (am calculat eu, aproximativ 22 litri / minut la 2200 rot / minut) sau pompa dubla (PRD 22), dar despre care nu stiu exact ce caracteristici are. Pompele PRD 2 sunt diferite pentru sensurile de rotatie stanga / dreapta si se pot folosi doua pentru a crea un debit de 45 l/min la 250 bari. In Focsani o pompa PRD2 costa 550 de lei, iar una PRD2-2, peste 1200 de lei. Avantajul ar fi ca se pot monta direct pe pinionul si in locul special de la motorul de BV.
Pentru confectionarea unui troliu este nevoie, pe langa pompa si hidromotor si de urmatoarele: rezervor de ulei hidraulic de minim 60 de litri (de IFRON sau facut din tabla de 4 mm grosime), conducte de inalta si joasa presiune, distribuitor, reductor (cat mai solid, de preferinta planetar), tambur, cablu, pricepere si scule pentru prelucrari metalice.

Eu m-am mai gandit la varianta folosirii unei pompe hidraulice pe post de hodromotor, dar nu stiu ce randament ar avea, insa unele hidromotoare pot fi folosite ca si pompe.
Problema e inca in studiu!! :mrgreen:


Last edited by arcasul on Sat Dec 24, 2011 6:54 pm, edited 2 times in total.

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 Post subject: Re: Trolii hidraulice
PostPosted: Fri Dec 16, 2011 10:21 am 
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Rezervor de 60 de litri? In nici un caz nu e nevoie de asa ceva! Pentru Ramsey, se foloseste recipientu masinii, pompa servo a masinii si se adauga conducte si Turi, si atat. Creste capacitatea, dar nu cu mult. Daca masina nu are sau are ceva mai putin performant se pune pompa ZF. Cand troliezi nu prea virezi, asa ca din punctu meu de vedere o pompa servo de cobra, pe fulie, pusa si la directie si la troliu ar fi arhisuficienta - si e cam 1-1.5 milioane SH. Si are si rezervor incorporat.


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 Post subject: Re: Trolii hidraulice
PostPosted: Fri Dec 16, 2011 10:57 am 
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E asa palpitant ca mai bine raman la troliu electric :D Dar as face unul cu 2 motoare si 2 viteze :lol:



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 Post subject: Re: Trolii hidraulice
PostPosted: Fri Dec 23, 2011 7:16 pm 
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 Post subject: Re: Trolii hidraulice
PostPosted: Wed Dec 28, 2011 10:09 pm 
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