{"id":7055,"date":"2021-01-31T20:41:42","date_gmt":"2021-01-31T19:41:42","guid":{"rendered":"https:\/\/ecocranes.hu\/a-hidraulika-alapjai\/"},"modified":"2025-10-13T16:42:35","modified_gmt":"2025-10-13T14:42:35","slug":"a-hidraulika-alapjai","status":"publish","type":"post","link":"https:\/\/ecocranes.hu\/ro\/a-hidraulika-alapjai\/","title":{"rendered":"No\u021biuni de baz\u0103 despre hidraulic\u0103"},"content":{"rendered":"<p><strong>Mediul \u00eenconjur\u0103tor este plin de dispozitive hidraulice. Utilajele de lucru, macaralele \u0219i dispozitivele de ridicare, precum \u0219i alte ma\u0219ini sunt echipate cu sisteme hidraulice, chiar \u0219i \u00een garajul nostru. Pentru a afla ceva mai multe despre func\u021bionarea acestor dispozitive, am adunat cele mai esen\u021biale informa\u021bii. Nu v\u0103 face\u021bi griji, nu este vorba despre o lucrare de inginerie, ci doar despre o prezentare general\u0103.<\/strong><\/p>\n<h2>Fonduri grece\u0219ti<\/h2>\n<p>La fel ca multe alte \u0219tiin\u021be, \u0219i hidraulica <strong>provine de la grecii antici<\/strong>. Cuv\u00e2ntul \u201ehidraulic\u0103\u201d \u00een sine \u2013 la fel ca orice termen care \u00eencepe cu prefixul \u201ehidro-\u201d sau \u201ehidra-\u201d \u2013 provine din cuv\u00e2ntul grecesc \u201ehydor\u201d, care \u00eenseamn\u0103 ap\u0103.<\/p>\n<blockquote><p>\u00cen ceea ce prive\u0219te no\u021biunea de hidraulic\u0103, \u00een lumea \u0219tiin\u021bific\u0103 <strong>transmiterea \u0219i controlul mi\u0219c\u0103rilor \u0219i for\u021belor cu ajutorul unui fluid<\/strong> \u00een\u021belege.<\/p><\/blockquote>\n<p>Pe l\u00e2ng\u0103 ap\u0103, \u0219tiin\u021ba hidraulicii se ocup\u0103, \u00een general, \u0219i de alte <strong>comportamentul fizic al lichidelor<\/strong> o discut\u0103 \u0219i el.<\/p>\n<p>Una dintre ramurile hidraulicii este <strong>hidrostatic\u0103<\/strong>, care studiaz\u0103 fenomenele legate de presiunea hidrostatic\u0103 generat\u0103 de gravita\u021bie \u00een lichidul aflat \u00een repaus, presiune care variaz\u0103 \u00een func\u021bie de \u00een\u0103l\u021bime.<\/p>\n<p>O alt\u0103 ramur\u0103 este hidrodinamica, care \u00ee\u0219i concentreaz\u0103 cercet\u0103rile asupra <strong>mecanica fluidelor \u00een mi\u0219care<\/strong> a afirmat.<\/p>\n<p>\u00cen practic\u0103, termenul \u201ehidraulic\u0103\u201d se refer\u0103 adesea la dispozitivul de ridicare \u00een sine sau la alte <strong>sistemul de transmisie utilizat ca parte a unui ansamblu mecanic<\/strong> \u00een\u021beleg. Acestea pot fi prezente \u00een sistemul de fr\u00e2nare al unui autovehicul, la o macara <a href=\"https:\/\/ecocranes.hu\/ro\/emelokisokos\/\">\u00een mecanismul de ridicare<\/a>, sau chiar \u0219i la un cric simplu folosit pentru schimbarea unei ro\u021bi.<\/p>\n<h2>Cercet\u0103tori renumi\u021bi \u00een domeniul hidraulicii<\/h2>\n<p>Legile fundamentale ale hidraulicii \u00een Antichitate <strong>Arhimede<\/strong> a stabilit.<\/p>\n<p>Continuarea \u0219i perfec\u021bionarea operei sale <strong>Leonardo da Vinci<\/strong> i se atribuie, el fiind cel care, la mijlocul secolului al XV-lea, a realizat numeroase experimente de laborator valoroase.<\/p>\n<pre>Oameni de \u0219tiin\u021b\u0103 recunoscu\u021bi din secolele al XVI-lea \u0219i al XVII-lea - <strong>Stevin, Galilei \u0219i Pascal<\/strong> \u2013 au dob\u00e2ndit, de asemenea, cuno\u0219tin\u021be noi despre hidraulic\u0103 \u0219i hidrostatic\u0103. <strong>Torricelli<\/strong> \u0219i a elaborat o formul\u0103 pentru determinarea vitezei cu care curge lichidul din g\u0103uri.<\/pre>\n<p>Fric\u021biunea intern\u0103 a lichidelor <strong>Sir Isaac Newton<\/strong> a stabilit legile naturii.<\/p>\n<h2>Func\u021bionare \u0219i aplicabilitate practic\u0103<\/h2>\n<p>Sistemul hidraulic se bazeaz\u0103 pe principiul conform c\u0103ruia <strong>lichidele nu sunt compresibile<\/strong>, prin urmare, transmiterea for\u021bei se poate realiza cu pierderi de energie relativ mici.<\/p>\n<p>A\u0219a cum <a href=\"https:\/\/ecocranes.hu\/ro\/emelokisokos\/\">\u00een articolul nostru despre dispozitive de ridicare<\/a> A\u0219a cum am men\u021bionat deja, sistemele hidraulice \u00eenchise sunt alc\u0103tuite, de obicei, dintr-un cilindru cu sec\u021biune transversal\u0103 mai mic\u0103 \u0219i unul cu sec\u021biune transversal\u0103 mai mare (cilindru de lucru), care sunt conectate printr-o conduct\u0103.<\/p>\n<p><strong>Sistemul este umplut cu lichid \u00een toate cazurile<\/strong>, care poate fi ap\u0103, dar \u00een prezent este mult mai r\u0103sp\u00e2ndit\u0103 umplerea sistemelor cu ulei mineral sau sintetic, sau chiar cu un alt tip de lichid special.&nbsp;<\/p>\n<pre>Pompa conectat\u0103 la sistemul hidraulic genereaz\u0103 presiune \u00een lichid. Prin intermediul diverselor unit\u0103\u021bi de reglare \u0219i comand\u0103, presiunea este transformat\u0103 \u00eentr-o for\u021b\u0103 dozat\u0103 corespunz\u0103tor \u0219i, \u00een final, <strong style=\"font-family: inherit;\">se transform\u0103 \u00een mi\u0219care \u0219i performan\u021b\u0103<\/strong>.<\/pre>\n<h2>Avantajele sale<\/h2>\n<p>Uneltele hidraulice <a href=\"https:\/\/ecocranes.hu\/ro\/hidraulikus-autoemelo\/\">\u00een utilaje de ridicare<\/a> Utilizarea sa prezint\u0103 numeroase avantaje:<\/p>\n<blockquote>\n<ul>\n<li>Puterea, cuplul \u0219i viteza, \u00een mod simplu, <strong>f\u0103r\u0103 grad<\/strong> poate fi controlat \u0219i reglat.<\/li>\n<li>Chiar \u0219i av\u00e2nd dimensiuni relativ reduse <a href=\"https:\/\/ecocranes.hu\/ro\/epulettol-fuggetlen-utolag-telepitett-25-tonnas-portaldaru-rendszer\/\">se pot ob\u021bine for\u021be mari<\/a>, care sunt <strong>pot fi adaptate la sarcin\u0103<\/strong>.<\/li>\n<li>A <strong>protec\u021bie \u00eempotriva suprasolicit\u0103rii<\/strong> se poate rezolva foarte u\u0219or.<\/li>\n<li>A <strong>mi\u0219carea poate fi oprit\u0103 cu u\u0219urin\u021b\u0103<\/strong>, sarcina suplimentar\u0103 poate fi men\u021binut\u0103 f\u0103r\u0103 mi\u0219care.<\/li>\n<\/ul>\n<\/blockquote>\n<p>Desigur, evolu\u021bia din ultimele decenii nu a ocolit nici domeniul hidraulicii.<\/p>\n<p>Performan\u021bele au crescut semnificativ, datorit\u0103 sistemelor de control computerizat din ce \u00een ce mai sofisticate <strong>mi\u0219c\u0103rile au devenit, la r\u00e2ndul lor, din ce \u00een ce mai complicate \u0219i mai complexe<\/strong>.<\/p>\n<p>Angaja\u021bii no\u0219tri califica\u021bi au \u021binut pasul cu aceast\u0103 evolu\u021bie, fie c\u0103 este vorba de sisteme de comand\u0103 sau de sisteme complete de macarale <a href=\"https:\/\/ecocranes.hu\/ro\/daruk-uzembe-helyezese-es-biztonsagos-mukodtetese\/\">despre proiectarea sa<\/a>, <a href=\"https:\/\/ecocranes.hu\/ro\/daruk-es-egyeb-emelogepek-dokumentacioja\/\">privind autorizarea<\/a> \u0219i execu\u021bia acestuia, <a href=\"https:\/\/ecocranes.hu\/ro\/visszahivas-keres\/\"><strong>suntem la dispozi\u021bia clien\u021bilor no\u0219tri actuali \u0219i a celor noi<\/strong><\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Mediul \u00eenconjur\u0103tor este plin de dispozitive hidraulice. Utilaje de lucru, macarale \u0219i dispozitive de ridicare, ba chiar \u0219i u\u0219a de la garaj. O prezentare general\u0103 cuprinz\u0103toare, citi\u021bi-o!<\/p>","protected":false},"author":1,"featured_media":7056,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[144,102],"tags":[143,123],"class_list":["post-7055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hasznos-tudas","category-hirek-cikkek","tag-emelo","tag-hidraulikus-emelo","has-thumb"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A hidraulika alapjai - Eco-Cranes<\/title>\n<meta name=\"description\" content=\"K\u00f6rnyezet\u00fcnk tele van hidraulikus szerkezetekkel. 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