{"id":2334,"date":"2026-01-21T03:34:36","date_gmt":"2026-01-21T03:34:36","guid":{"rendered":"https:\/\/www.pto-drive-shafts.com\/?p=2334"},"modified":"2026-01-30T05:48:32","modified_gmt":"2026-01-30T05:48:32","slug":"engineering-the-heart-of-the-cold-chain-drive-shafts-for-spiral-freezers","status":"publish","type":"post","link":"https:\/\/www.pto-drive-shafts.com\/ro\/application\/engineering-the-heart-of-the-cold-chain-drive-shafts-for-spiral-freezers\/","title":{"rendered":"Ingineria inimii lan\u021bului frigorific: Arbori de transmisie pentru congelatoare spiralate"},"content":{"rendered":"
Loca\u0163ie:<\/strong> Bury St Edmunds, Suffolk, Regatul Unit | Standard:<\/strong> ISO 9001:2015 \/ BRCGS<\/section>\n
\"ArboreConform mediului cu risc ridicat al proces\u0103rii industriale a alimentelor, congelatoarele spiralate reprezint\u0103 un blocaj \u00een produc\u021bie. O defec\u021biune a ac\u021bion\u0103rii principale a tamburului poate duce la pierderi semnificative de aluat, pe\u0219te sau alimente gata de consum. pto-drive-shafts.com Ltd. din Marea Britanie vinde mai mult dec\u00e2t simple \u201epiese\u201d; ne dedic\u0103m dezvolt\u0103rii de solu\u021bii de cuplu care s\u0103 garanteze c\u0103 acestea pot rezista la condi\u021bii dure, de la temperaturi de func\u021bionare de -40\u00b0C p\u00e2n\u0103 la temperaturi de sterilizare \u0219i cl\u0103tire de +85\u00b0C.<\/section>\n
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\ud83d\udc68\u200d\ud83d\udd27 Jurnalul inginerului \u0219ef (Atelierul Suffolk):<\/strong>
\n\u201eAm v\u0103zut asta de mult prea multe ori \u00een fabricile noastre din Yorkshire \u0219i Midlands. Echipa de repara\u021bii \u00eenlocuie\u0219te arborele original deteriorat cu un arbore standard din o\u021bel carbon, deoarece este \u00ab\u00een stoc\u00bb. Dou\u0103 s\u0103pt\u0103m\u00e2ni mai t\u00e2rziu, acesta se rupe. De ce? Fragilitate la rece. O\u021belul obi\u0219nuit \u00ee\u0219i pierde ductilitatea sub -20\u00b0C. C\u00e2nd spirala porne\u0219te \u2013 dep\u0103\u0219ind frecarea static\u0103 a unei curele de mare putere de 500 de metri lungime \u2013 sarcina de impact face ca o\u021belul s\u0103 se sparg\u0103 ca sticla. De aceea, seria noastr\u0103 S-700 folose\u0219te o\u021bel inoxidabil 316L tratat criogenic sau o\u021bel inoxidabil 42CrMo4 modificat \u0219i are certificare criogenic\u0103 pentru impact.\u201d<\/div>\n<\/section>\n
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Fizica defec\u021biunilor: De ce pu\u021burile generice mor \u00een congelatoare<\/h2>\n

Aplicarea unui arbore cardanic (articula\u021bie universal\u0103) \u00eentr-un sistem de transportor spiralat, \u00een special \u00een ac\u021bionarea tamburului principal, prezint\u0103 o \u201eTriad\u0103 de solicit\u0103ri\u201d unic\u0103:<\/p>\n

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  1. \u0218oc termic \u0219i nepotrivire CTE:<\/strong> \u00cen timpul ciclurilor CIP (cur\u0103\u021bare la locul de utilizare), arborele se dilat\u0103 rapid. Dac\u0103 toleran\u021bele canelurilor nu sunt calculate pentru acest coeficient de dilatare termic\u0103 (CTE), ansamblul glisant se blocheaz\u0103. C\u00e2nd congelatorul reporne\u0219te, articula\u021bia glisant\u0103 blocat\u0103 transmite sarcini axiale \u00een rulmen\u021bii cutiei de viteze, provoc\u00e2nd defec\u021biuni catastrofale.<\/li>\n
  2. Fenomenul de \u201ealunecare lipit\u0103\u201d:<\/strong> Benzile spiralate, \u00een special atunci c\u00e2nd sunt \u00eenghe\u021bate, au o frecare static\u0103 ridicat\u0103. Cuplul de pornire este adesea de 3,5 ori mai mare dec\u00e2t cuplul de rulare.<\/li>\n
  3. Atac coroziv:<\/strong> Combina\u021bia de acizi alimentari (lactic, citric) \u0219i agen\u021bi de cur\u0103\u021bare caustici agresivi necesit\u0103 mai mult dec\u00e2t vopsea.<\/li>\n<\/ol>\n

    Solu\u021bia noastr\u0103: Filosofia \u201eOne-Piece\u201d<\/h3>\n

    Pentru a \u00eendeplini standardele de igien\u0103 impuse de Agen\u021bia pentru Standarde Alimentare din Marea Britanie (FSA) \u0219i de auditurile BRCGS la nivel global, am abandonat designul cu flan\u0219\u0103 sudat\u0103 al arborelui nostru premium de calitate alimentar\u0103 \u0219i am adoptat \u00een schimb un proces de ac\u021bionare a arborelui cu flan\u0219\u0103 dintr-o singur\u0103 pies\u0103.<\/p>\n

    Prin prelucrarea jugului \u0219i a flan\u0219ei dintr-o singur\u0103 bucat\u0103 de o\u021bel inoxidabil, am eliminat sudurile - un important mediu de reproducere pentru Listeria monocytogenes \u0219i un punct slab structural pentru fisurarea prin oboseal\u0103.<\/p>\n<\/section>\n

    \n

    Matricea specifica\u021biilor tehnice: Seria S-700 Cryo-Drive<\/h2>\n

    Urm\u0103toarele date reprezint\u0103 configura\u021bia noastr\u0103 standard pentru turnuri spiralate de mare putere (de exemplu, \u00eenlocuiri compatibile cu JBT, GEA, Starfrost).<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    ID-ul parametrului<\/th>\nCategorie de specifica\u021bii<\/th>\nValoare metric\u0103 \/ Standard<\/th>\nImperial \/ Note<\/th>\n<\/tr>\n<\/thead>\n
    TS-01<\/td>\nCuplu nominal (Mn)<\/td>\n12.500 Nm<\/td>\n9.220 lb-ft<\/td>\n<\/tr>\n
    TS-02<\/td>\nCuplu de oboseal\u0103 (Mfat)<\/td>\n8.400 Nm<\/td>\nLimit\u0103 de via\u021b\u0103 infinit\u0103<\/td>\n<\/tr>\n
    TS-03<\/td>\nCuplu de rupere (Mb)<\/td>\n32.000 Nm<\/td>\nFactor de siguran\u021b\u0103 2,56<\/td>\n<\/tr>\n
    TS-04<\/td>\nUnghiul maxim de articula\u021bie<\/td>\n25\u00b0 (Continuu)<\/td>\n35\u00b0 (Momentan)<\/td>\n<\/tr>\n
    TS-05<\/td>\nVitez\u0103 de rota\u021bie (max.)<\/td>\n1.200 RPM<\/td>\nG6.3 echilibrat<\/td>\n<\/tr>\n
    TS-06<\/td>\nTipul splinei<\/td>\nEvolvent\u0103 DIN 5480<\/td>\nModul 3, Z=18<\/td>\n<\/tr>\n
    TS-07<\/td>\nMaterial (juguri)<\/td>\nAISI 316L (EN 1.4404)<\/td>\nCriogenizat<\/td>\n<\/tr>\n
    TS-08<\/td>\nMaterial (Kit \u00eencruci\u0219at)<\/td>\n20CrMnTiH (c\u0103lit prin cementare)<\/td>\nCu etan\u0219\u0103ri din PTFE<\/td>\n<\/tr>\n
    TS-09<\/td>\nRugozitatea suprafe\u021bei<\/td>\nRa < 0,8 \u00b5m<\/td>\nFinisaj sanitar<\/td>\n<\/tr>\n
    TS-10<\/td>\nInterval de temperatur\u0103 de func\u021bionare<\/td>\n-45\u00b0C p\u00e2n\u0103 la +135\u00b0C<\/td>\nAcoper\u0103 cur\u0103\u021barea prin congelare \u0219i cu abur<\/td>\n<\/tr>\n
    TS-11<\/td>\nExtensie de alunecare (La)<\/td>\n140 mm<\/td>\nCompensarea contrac\u021biei termice<\/td>\n<\/tr>\n
    TS-12<\/td>\nLungime \u00eenchis\u0103 (Lc)<\/td>\n850 mm<\/td>\nPersonalizabil \u00b15mm<\/td>\n<\/tr>\n
    TS-13<\/td>\nRigiditate torsional\u0103<\/td>\n145 kNm\/radian\u021bi<\/td>\nRigiditate ridicat\u0103<\/td>\n<\/tr>\n
    TS-14<\/td>\nEchilibrare dinamic\u0103<\/td>\nISO 1940-1 Grad G6.3<\/td>\nla 1000 RPM<\/td>\n<\/tr>\n
    TS-15<\/td>\nDurata de via\u021b\u0103 a rulmentului (L10h)<\/td>\n> 25.000 de ore<\/td>\nSub sarcin\u0103 50%<\/td>\n<\/tr>\n
    TS-16<\/td>\nLubrifiere<\/td>\nUnsoare alimentar\u0103 NSF H1<\/td>\nMobil SHC sau echivalent<\/td>\n<\/tr>\n
    TS-17<\/td>\nSistem de etan\u0219are<\/td>\nViton\u00ae cu trei buze<\/td>\nClasificare IP67<\/td>\n<\/tr>\n
    TS-18<\/td>\nDiametrul flan\u0219ei<\/td>\n180 mm<\/td>\nFa\u021b\u0103 standard DIN<\/td>\n<\/tr>\n
    TS-19<\/td>\nModelul g\u0103urilor pentru \u0219uruburi<\/td>\n8 x 14 mm la 155 mm diametru PCD<\/td>\nCompatibil cu reductoarele standard<\/td>\n<\/tr>\n
    TS-20<\/td>\nDiametrul tubului<\/td>\nPerete de 100 mm x 6 mm<\/td>\nTub de precizie f\u0103r\u0103 sudur\u0103<\/td>\n<\/tr>\n
    TS-21<\/td>\nCertificare sudur\u0103<\/td>\nEN ISO 9606-1<\/td>\nEcranat TIG\/Argon<\/td>\n<\/tr>\n
    TS-22<\/td>\nRezisten\u021b\u0103 la pulverizare cu sare<\/td>\n> 1.000 de ore<\/td>\nASTM B117<\/td>\n<\/tr>\n
    TS-23<\/td>\nEnergie de impact (Charpy)<\/td>\n> 40J la -40\u00b0C<\/td>\nVerificarea rezisten\u021bei KV2<\/td>\n<\/tr>\n
    TS-24<\/td>\nVopsea\/Acoperire<\/td>\nElectrolustruit sau epoxidic<\/td>\nAcoperire conform\u0103 cu FDA<\/td>\n<\/tr>\n
    TS-25<\/td>\nLimita for\u021bei axiale<\/td>\n4.500 N<\/td>\nSub sarcin\u0103 telescopic\u0103<\/td>\n<\/tr>\n
    TS-26<\/td>\nDiametrul trusei transversale<\/td>\n48 mm<\/td>\nSeria Heavy Duty<\/td>\n<\/tr>\n
    TS-27<\/td>\nInterval de \u00eentre\u021binere<\/td>\n2.000 de ore \/ 6 luni<\/td>\nOp\u021biune f\u0103r\u0103 lubrifiere disponibil\u0103<\/td>\n<\/tr>\n
    TS-28<\/td>\nCertific\u0103ri<\/td>\nUKCA, CE, ATEX (Op\u021bional)<\/td>\nConform cu normele anti-praf pentru Zona 21\/22<\/td>\n<\/tr>\n
    TS-29<\/td>\nRezisten\u021ba la curgere a tubului<\/td>\n> 480 MPa<\/td>\n–<\/td>\n<\/tr>\n
    TS-30<\/td>\nGreutate<\/td>\n42,5 kg<\/td>\nAproximativ<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n
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    Adaptare regional\u0103: Deservirea sectorului alimentar din Regatul Unit \u0219i Europa<\/h2>\n

    O brut\u0103rie din Leeds are cerin\u021be diferite pentru arborele s\u0103u de transmisie fa\u021b\u0103 de o fabric\u0103 de procesare a pe\u0219telui din Aberdeen. Exist\u0103 diferen\u021be \u00een ceea ce prive\u0219te umiditatea, salinitatea \u0219i ciclurile de func\u021bionare.<\/p>\n

    Centre industriale din Marea Britanie \u0219i nevoi specifice<\/h3>\n