{"id":3175,"date":"2026-05-11T08:47:53","date_gmt":"2026-05-11T08:47:53","guid":{"rendered":"https:\/\/sprocket-chain.net\/?post_type=product&p=3175"},"modified":"2026-05-11T08:47:53","modified_gmt":"2026-05-11T08:47:53","slug":"b-series-short-pitch-precision-roller-chains","status":"publish","type":"product","link":"https:\/\/sprocket-chain.net\/cs\/produkt\/b-series-short-pitch-precision-roller-chains\/","title":{"rendered":"P\u0159esn\u00e9 v\u00e1le\u010dkov\u00e9 \u0159et\u011bzy s kr\u00e1tkou rozte\u010d\u00ed \u0159ady B"},"content":{"rendered":"
\n

P\u0159ehled p\u0159esn\u00e9ho in\u017een\u00fdrstv\u00ed a kinematick\u00e1 dynamika<\/h2>\n

\u010cast\u00fdm technick\u00fdm dotazem od odd\u011blen\u00ed zad\u00e1v\u00e1n\u00ed ve\u0159ejn\u00fdch zak\u00e1zek, kter\u00e1 hodnot\u00ed n\u00e1hradn\u00ed hnac\u00ed \u00fastroj\u00ed, je: Co je to \u0159et\u011bz a pastorek?<\/strong> Funk\u010dn\u011b p\u0159edstavuje synchronizovan\u00e9 kinetick\u00e9 spojovac\u00ed rozhran\u00ed, kde ozuben\u00fd n\u00e1boj s odvalova\u010dem fyzicky p\u0159en\u00e1\u0161\u00ed to\u010div\u00fd moment motoru prost\u0159ednictv\u00edm vz\u00e1jemn\u011b propojen\u00e9ho, \u200b\u200bpru\u017en\u00e9ho kovov\u00e9ho \u0159emenu. V konfiguraci s kr\u00e1tkou rozte\u010d\u00ed je rozm\u011brov\u00e1 vzd\u00e1lenost mezi st\u0159edy kalen\u00fdch \u010dep\u016f minimalizov\u00e1na v pom\u011bru k pr\u016fm\u011bru v\u00e1le\u010dku. Tato geometrie matematicky nut\u00ed v\u011bt\u0161\u00ed po\u010det zub\u016f ozuben\u00e9ho kola aktivn\u011b zab\u00edrat s t\u00e1hlem sou\u010dasn\u011b.<\/p>\n

\"Animovan\u00e1<\/div>\n

Tato fyzik\u00e1ln\u00ed vlastnost drasticky potla\u010duje tetivov\u00e9 p\u016fsoben\u00ed \u2013 harmonick\u00e9 vertik\u00e1ln\u00ed ohrani\u010den\u00ed, ke kter\u00e9mu doch\u00e1z\u00ed, kdy\u017e jednotliv\u00e9 p\u0159\u00edm\u00e9 \u010dl\u00e1nky proch\u00e1zej\u00ed polygon\u00e1ln\u00edm tvarem n\u00e1boje. Vyhlazen\u00edm tohoto z\u00e1b\u011brov\u00e9ho oblouku p\u0159evodovka bezpe\u010dn\u011b p\u0159en\u00e1\u0161\u00ed kinetickou energii p\u0159i velmi vysok\u00fdch ot\u00e1\u010dk\u00e1ch, ani\u017e by zp\u016fsobovala struktur\u00e1ln\u00ed vibrace podvozku. Vysoce kritickou chybou, kter\u00e9 se b\u011b\u017en\u011b dopou\u0161t\u011bj\u00ed \u00fadr\u017eb\u00e1\u0159sk\u00e1 odd\u011blen\u00ed, je zam\u011b\u0148ov\u00e1n\u00ed americk\u00e9 \u0159ady A (standard ANSI) s evropskou normou \u0159ady B. I kdy\u017e ob\u011b konfigurace mohou sd\u00edlet stejnou rozm\u011brovou rozte\u010d \u2013 nap\u0159\u00edklad vzd\u00e1lenost 12,7 mm nebo p\u016fl palce mezi po sob\u011b jdouc\u00edmi st\u0159edy \u010dep\u016f \u2013 jejich vnit\u0159n\u00ed geometrick\u00e9 profily se drasticky li\u0161\u00ed. Form\u00e1t \u0159ady B konzistentn\u011b vyu\u017e\u00edv\u00e1 zcela odli\u0161n\u00e9 pr\u016fm\u011bry v\u00e1le\u010dk\u016f, tlou\u0161\u0165ky \u010dep\u016f a \u0161\u00ed\u0159ky vnit\u0159n\u00edch desek. Nap\u0159\u00edklad \u0159ada B obecn\u011b pou\u017e\u00edv\u00e1 pro danou rozte\u010d siln\u011bj\u0161\u00ed pr\u016fm\u011br \u010depu, co\u017e poskytuje podstatn\u011b v\u011bt\u0161\u00ed vnit\u0159n\u00ed plochu lo\u017eiska, kter\u00e1 siln\u011b odol\u00e1v\u00e1 abrazivn\u00edmu opot\u0159eben\u00ed. Pokud se technik pokus\u00ed n\u00e1sil\u00edm prot\u00e1hnout t\u00e1hlo \u0159ady B dle DIN 8187 p\u0159es ozuben\u00fd n\u00e1boj dle specifikace ANSI, pln\u00e9 v\u00e1le\u010dky se nedostanou do ko\u0159enov\u00e9 dutiny ozuben\u00e9ho kola. Pochopen\u00ed explicitn\u00edho anatomie \u0159et\u011bzu<\/strong> Mechanismy zaji\u0161\u0165uj\u00ed, \u017ee vybran\u00e9 komponenty se p\u0159i velk\u00e9m zat\u00ed\u017een\u00ed p\u0159ed\u010dasn\u011b nenat\u00e1hnou ani neutrp\u00ed smykov\u00e9 deformace \u010dep\u016f.<\/p>\n

Specifikace simplexn\u00edho p\u0159enosu v\u00fdkonu<\/h2>\n

Simplexn\u00ed neboli jednovl\u00e1knov\u00e1 konfigurace p\u0159edstavuje prim\u00e1rn\u00ed mechanickou tepnu pro standardn\u00ed pr\u016fmyslov\u00fd p\u0159enos v\u00fdkonu. P\u0159en\u00e1\u0161\u00ed ve\u0161ker\u00fd to\u010div\u00fd moment hlavn\u00edho pohonu p\u0159es jednu \u0159adu v\u00e1lc\u016f z oceli lisovan\u00fdch za studena. N\u00ed\u017ee uveden\u00e1 empirick\u00e1 data definuj\u00ed p\u0159\u00edsn\u00e9 v\u00fdrobn\u00ed tolerance pot\u0159ebn\u00e9 pro bezpe\u010dn\u00fd p\u0159enos obrovsk\u00e9ho v\u00fdkonu podle norem ISO 606. P\u0159i integraci t\u011bchto komponent mus\u00ed strojn\u00ed in\u017een\u00fd\u0159i vyhodnotit nejen mez pevnosti v tahu \u2013 absolutn\u00ed fyzik\u00e1ln\u00ed bod zlomu za p\u0159\u00edsn\u00fdch laboratorn\u00edch podm\u00ednek \u2013 ale p\u0159edev\u0161\u00edm \u00fanavovou pevnost. Bezpe\u010dn\u00fd limit provozn\u00edho zat\u00ed\u017een\u00ed pro... hnac\u00ed \u0159et\u011bz<\/a> se obvykle vypo\u010d\u00edt\u00e1v\u00e1 zhruba na jednu \u0161estinu a\u017e jednu dev\u00e1tinu meze \u00fanosnosti v tahu, aby se zohlednily nep\u0159edv\u00eddateln\u00e9 r\u00e1zov\u00e9 ud\u00e1losti a cyklick\u00e9 nam\u00e1h\u00e1n\u00ed.<\/p>\n

\"V\u00e1le\u010dkov\u00fd<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u010c\u00edslo DIN\/ISO<\/th>\nRozte\u010d (P) mm<\/th>\nPr\u016fm\u011br v\u00e1lce (d1)<\/th>\nVnit\u0159n\u00ed \u0161\u00ed\u0159ka (b1)<\/th>\nPr\u016fm\u011br \u010depu (d2)<\/th>\n\u010cep L max.<\/th>\nPin Lc max<\/th>\nHloubka desky (h2)<\/th>\nTlou\u0161\u0165ka plechu (T)<\/th>\nPevnost v tahu kN\/lbf<\/th>\nPr\u016fm\u011brn\u00e1 pevnost v tahu kN<\/th>\nHmotnost kg\/m\u00b2<\/th>\n<\/tr>\n<\/thead>\n
04B-1<\/td>\n6.000<\/td>\n4.00<\/td>\n2.80<\/td>\n1.85<\/td>\n6.80<\/td>\n7.8<\/td>\n5.00<\/td>\n0.60<\/td>\n3.0\/682<\/td>\n3.2<\/td>\n0.11<\/td>\n<\/tr>\n
05B-1<\/td>\n8.000<\/td>\n5.00<\/td>\n3.00<\/td>\n2.31<\/td>\n8.20<\/td>\n8.9<\/td>\n7.10<\/td>\n0.80<\/td>\n5.0\/1136<\/td>\n5.9<\/td>\n0.20<\/td>\n<\/tr>\n
*06B-1<\/td>\n9.525<\/td>\n6.35<\/td>\n5.72<\/td>\n3.28<\/td>\n13.15<\/td>\n14.1<\/td>\n8.20<\/td>\n1.30<\/td>\n9.0\/2045<\/td>\n10.4<\/td>\n0.41<\/td>\n<\/tr>\n
08B-1<\/td>\n12.700<\/td>\n8.51<\/td>\n7.75<\/td>\n4.45<\/td>\n16.70<\/td>\n18.2<\/td>\n11.80<\/td>\n1.60<\/td>\n18.0\/4091<\/td>\n19.4<\/td>\n0.69<\/td>\n<\/tr>\n
10B-1<\/td>\n15.875<\/td>\n10.16<\/td>\n9.65<\/td>\n5.08<\/td>\n19.50<\/td>\n20.9<\/td>\n14.70<\/td>\n1.70<\/td>\n22.4\/5091<\/td>\n27.5<\/td>\n0.93<\/td>\n<\/tr>\n
12B-1<\/td>\n19.050<\/td>\n12.07<\/td>\n11.68<\/td>\n5.72<\/td>\n22.50<\/td>\n24.2<\/td>\n16.00<\/td>\n1.85<\/td>\n29.0\/6591<\/td>\n32.2<\/td>\n1.15<\/td>\n<\/tr>\n
16B-1<\/td>\n25.400<\/td>\n15.88<\/td>\n17.02<\/td>\n8.28<\/td>\n36.10<\/td>\n37.4<\/td>\n21.00<\/td>\n4.15\/3.1<\/td>\n60.0\/13636<\/td>\n72.8<\/td>\n2.71<\/td>\n<\/tr>\n
20B-1<\/td>\n31.750<\/td>\n19.05<\/td>\n19.56<\/td>\n10.19<\/td>\n41.30<\/td>\n45.0<\/td>\n26.40<\/td>\n4.50\/3.5<\/td>\n95.0\/21591<\/td>\n106.7<\/td>\n3.70<\/td>\n<\/tr>\n
24B-1<\/td>\n38.100<\/td>\n25.40<\/td>\n25.40<\/td>\n14.63<\/td>\n53.40<\/td>\n57.8<\/td>\n33.20<\/td>\n6.00\/4.8<\/td>\n160.0\/36364<\/td>\n178.0<\/td>\n7.10<\/td>\n<\/tr>\n
28B-1<\/td>\n44.450<\/td>\n27.94<\/td>\n30.99<\/td>\n15.90<\/td>\n65.10<\/td>\n69.5<\/td>\n36.70<\/td>\n7.50\/6.0<\/td>\n200.0\/45455<\/td>\n222.0<\/td>\n8.50<\/td>\n<\/tr>\n
32B-1<\/td>\n50.800<\/td>\n29.21<\/td>\n30.99<\/td>\n17.81<\/td>\n66.00<\/td>\n71.0<\/td>\n42.00<\/td>\n7.00\/6.0<\/td>\n250.0\/56818<\/td>\n277.5<\/td>\n10.25<\/td>\n<\/tr>\n
40B-1<\/td>\n63.500<\/td>\n39.37<\/td>\n38.10<\/td>\n22.89<\/td>\n82.20<\/td>\n89.2<\/td>\n52.96<\/td>\n8.50\/8.0<\/td>\n355.0\/80682<\/td>\n394.0<\/td>\n16.35<\/td>\n<\/tr>\n
48B-1<\/td>\n76.200<\/td>\n48.26<\/td>\n45.72<\/td>\n29.24<\/td>\n99.10<\/td>\n107.0<\/td>\n63.80<\/td>\n12.00\/10.0<\/td>\n560.0\/127272<\/td>\n621.6<\/td>\n25.00<\/td>\n<\/tr>\n
56B-1<\/td>\n88.900<\/td>\n53.98<\/td>\n53.34<\/td>\n34.32<\/td>\n114.6<\/td>\n123.0<\/td>\n77.80<\/td>\n13.50\/12.0<\/td>\n850.0\/193180<\/td>\n940.0<\/td>\n35.78<\/td>\n<\/tr>\n
64B-1<\/td>\n101.600<\/td>\n63.50<\/td>\n60.96<\/td>\n39.40<\/td>\n130.0<\/td>\n138.5<\/td>\n90.17<\/td>\n15.00\/13.0<\/td>\n112.0\/254544<\/td>\n1240.0<\/td>\n46.00<\/td>\n<\/tr>\n
72B-1<\/td>\n114.300<\/td>\n72.39<\/td>\n68.58<\/td>\n44.48<\/td>\n147.4<\/td>\n156.4<\/td>\n103.60<\/td>\n17.00\/15.0<\/td>\n1400.0\/318180<\/td>\n1550.0<\/td>\n60.80<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

P\u0159i specifikaci n\u00e1hrady simplexn\u00edho \u0159et\u011bzu z katalogu je naprosto nezbytn\u00e9 ov\u011b\u0159it p\u0159esn\u00fd pr\u016fm\u011br v\u00e1le\u010dku (d1) a vnit\u0159n\u00ed \u0161\u00ed\u0159ku mezi desti\u010dkami (b1). Nespr\u00e1vn\u011b dimenzovan\u00fd v\u00e1le\u010dek se nedostane hluboko do ko\u0159enov\u00e9 dutiny poh\u00e1n\u011bn\u00e9ho n\u00e1boje. M\u00edsto toho se agresivn\u011b pohybuje po kalen\u00fdch boc\u00edch zub\u016f. Toto nesourod\u00e9 zapojen\u00ed ni\u010d\u00ed plynul\u00fd p\u0159enos kroutic\u00edho momentu, kter\u00fd je charakteristick\u00fd pro konstrukce s kr\u00e1tkou rozte\u010d\u00ed, a zp\u016fsobuje siln\u00e9 radi\u00e1ln\u00ed t\u0159en\u00ed, kter\u00e9 rychle obru\u0161uje povrchy z nitrokarbonizovan\u00e9 oceli. Obsluha za\u0159\u00edzen\u00ed mus\u00ed nav\u00edc pe\u010dliv\u011b porovnat maxim\u00e1ln\u00ed d\u00e9lku \u010depu (L max) s t\u011blesem stroje. V\u016fle kolem t\u011bles motoru a ochrann\u00fdch kryt\u016f mohou b\u00fdt mimo\u0159\u00e1dn\u011b mal\u00e9; \u010dep, kter\u00fd vy\u010dn\u00edv\u00e1 p\u0159\u00edli\u0161 daleko do strany, bude neust\u00e1le nar\u00e1\u017eet do podvozku, co\u017e zp\u016fsob\u00ed tepeln\u00e9 p\u0159et\u00ed\u017een\u00ed a fyzick\u00e9 st\u0159\u00edh\u00e1n\u00ed z\u00e1vla\u010dek z hlavn\u00edch \u010dl\u00e1nk\u016f. Simplexn\u00ed \u0159et\u011bz \u0159ady B vyu\u017e\u00edv\u00e1 svou siln\u011bj\u0161\u00ed architekturu \u010depu k dramatick\u00e9mu zv\u011bt\u0161en\u00ed plochy lo\u017eiska mezi \u010depem a pln\u00fdm pouzdrem. Tato geometrick\u00e1 v\u00fdhoda sni\u017euje lok\u00e1ln\u00ed kontaktn\u00ed tlak a p\u0159\u00edmo zpomaluje abrazivn\u00ed vnit\u0159n\u00ed opot\u0159eben\u00ed, kter\u00e9 mechanici \u010dasto, ale nespr\u00e1vn\u011b, ozna\u010duj\u00ed jako prota\u017een\u00ed \u0159et\u011bzu. Spr\u00e1vn\u00e9 c\u00edlen\u00e9 maz\u00e1n\u00ed je nezbytn\u00e9 pro udr\u017een\u00ed t\u011bchto p\u0159esn\u00fdch rozm\u011brov\u00fdch v\u016fl\u00ed po miliony nep\u0159etr\u017eit\u00fdch rota\u010dn\u00edch cykl\u016f v abrazivn\u00edch poln\u00edch podm\u00ednk\u00e1ch.<\/p>\n

Multiplexn\u00ed rozlo\u017een\u00ed z\u00e1t\u011b\u017ee: duplexn\u00ed a triplexn\u00ed architektury<\/h2>\n

Kdy\u017e naprost\u00fd rota\u010dn\u00ed kroutic\u00ed moment generovan\u00fd masivn\u00edm prim\u00e1rn\u00edm hnac\u00edm motorem zcela p\u0159ekro\u010d\u00ed bezpe\u010dnou mez kluzu simplexn\u00edho spojen\u00ed, ale vn\u011bj\u0161\u00ed rozm\u011bry pouzdra br\u00e1n\u00ed instalaci fyzicky v\u011bt\u0161\u00ed rozte\u010de, in\u017een\u00fd\u0159i specifikuj\u00ed multiplexn\u00ed konfigurace. Duplexn\u00ed (dvoupramenn\u00e9) a triplexn\u00ed (trojit\u00e9 pramenn\u00e9) form\u00e1ty mechanicky spojuj\u00ed rovnob\u011b\u017en\u00e9 \u0159ady desek z vysoce uhl\u00edkov\u00e9 oceli pomoc\u00ed prodlou\u017een\u00fdch, cementa\u010dn\u011b kalen\u00fdch p\u0159\u00ed\u010dn\u00fdch \u010dep\u016f. Rozd\u011blen\u00edm obrovsk\u00e9ho radi\u00e1ln\u00edho nap\u011bt\u00ed na n\u011bkolik odli\u0161n\u00fdch nosn\u00fdch rovin v\u00fdrazn\u011b kles\u00e1 smykov\u00e9 nap\u011bt\u00ed na \u010dep. Toto geometrick\u00e9 rozlo\u017een\u00ed zat\u00ed\u017een\u00ed aktivn\u011b zabra\u0148uje katastrofick\u00e9mu lomu ve vysoce nep\u0159edv\u00eddateln\u00fdch prost\u0159ed\u00edch s vysok\u00fdmi r\u00e1zy, jako jsou masivn\u00ed rota\u010dn\u00ed cement\u00e1\u0159sk\u00e9 pece, t\u011b\u017ek\u00e9 odkor\u0148ova\u010de d\u0159eva nebo hlubok\u00e9 \u0161achtov\u00e9 miner\u00e1ln\u00ed v\u00fdtahy.<\/p>\n

\"Architektura<\/div>\n

Absolutn\u011b kritickou in\u017een\u00fdrskou metrikou uvedenou v n\u00ed\u017ee uveden\u00fdch matic\u00edch multiplexn\u00edch dat je p\u0159\u00ed\u010dn\u00e1 rozte\u010d (Pt). Tento parametr p\u0159esn\u011b definuje p\u0159esnou bo\u010dn\u00ed vzd\u00e1lenost mezi st\u0159edov\u00fdmi \u010darami mezi rovnob\u011b\u017en\u00fdmi \u0159adami v\u00e1lc\u016f. V\u00edcevl\u00e1knov\u00fd syst\u00e9my ozuben\u00fdch kol a \u0159et\u011bz\u016f<\/a> mus\u00ed b\u00fdt b\u011bhem instalace zarovn\u00e1ny s mikrometrickou p\u0159esnost\u00ed. Pokud jsou ozuben\u00e9 n\u00e1boje na hnac\u00edm a hnan\u00e9m h\u0159\u00eddeli vych\u00fdleny by\u0165 jen o zlomek stupn\u011b, nebo pokud CNC odvalov\u00e1n\u00ed n\u00e1boje neodr\u00e1\u017e\u00ed tuto p\u0159esnou rozte\u010d Pt identicky, kinetick\u00e9 zat\u00ed\u017een\u00ed se prudce p\u0159esune na jeden pramen. Toto siln\u00e9 asymetrick\u00e9 zat\u00ed\u017een\u00ed okam\u017eit\u011b roztrhne vnit\u0159n\u00ed desky, urychl\u00ed zad\u0159en\u00ed \u010dep\u016f a b\u011bhem n\u011bkolika hodin provozu zcela rozbije odolnou sestavu. P\u0159esn\u00e1 specifikace z duplexn\u00edch a triplexn\u00edch stol\u016f zaru\u010duje dokonal\u00e9 paraleln\u00ed rozlo\u017een\u00ed v\u00fdkonu v cel\u00e9m hnac\u00edm \u00fastroj\u00ed.<\/p>\n

Duplexn\u00ed (2vl\u00e1knov\u00e1) datov\u00e1 matice<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u010c\u00edslo DIN\/ISO<\/th>\nRozte\u010d (P) mm<\/th>\nPr\u016fm\u011br v\u00e1lce (d1)<\/th>\nVnit\u0159n\u00ed \u0161\u00ed\u0159ka (b1)<\/th>\nPr\u016fm\u011br \u010depu (d2)<\/th>\n\u010cep L max.<\/th>\nPin Lc max<\/th>\nHloubka desky (h2)<\/th>\nTlou\u0161\u0165ka plechu (T)<\/th>\nP\u0159\u00ed\u010dn\u00fd (Pt)<\/th>\nPevnost v tahu kN\/lbf<\/th>\nPr\u016fm\u011brn\u00e1 pevnost v tahu kN<\/th>\nHmotnost kg\/m\u00b2<\/th>\n<\/tr>\n<\/thead>\n
04B-2<\/td>\n6.000<\/td>\n4.00<\/td>\n2.80<\/td>\n1.85<\/td>\n14.5<\/td>\n15.0<\/td>\n6.00<\/td>\n0.80<\/td>\n6.40<\/td>\n7.00\/1591<\/td>\n8.6<\/td>\n0.28<\/td>\n<\/tr>\n
05B-2<\/td>\n8.000<\/td>\n5.00<\/td>\n3.00<\/td>\n2.31<\/td>\n13.9<\/td>\n14.5<\/td>\n7.10<\/td>\n0.80<\/td>\n5.64<\/td>\n7.8\/1773<\/td>\n10.2<\/td>\n0.33<\/td>\n<\/tr>\n
*06B-2<\/td>\n9.525<\/td>\n6.35<\/td>\n5.72<\/td>\n3.28<\/td>\n23.4<\/td>\n24.4<\/td>\n8.20<\/td>\n1.30<\/td>\n10.24<\/td>\n16.9\/3841<\/td>\n18.7<\/td>\n0.77<\/td>\n<\/tr>\n
08B-2<\/td>\n12.700<\/td>\n8.51<\/td>\n7.75<\/td>\n4.45<\/td>\n31.0<\/td>\n32.2<\/td>\n11.80<\/td>\n1.60<\/td>\n13.92<\/td>\n32.0\/7273<\/td>\n38.7<\/td>\n1.34<\/td>\n<\/tr>\n
10B-2<\/td>\n15.875<\/td>\n10.16<\/td>\n9.65<\/td>\n5.08<\/td>\n36.1<\/td>\n37.5<\/td>\n14.70<\/td>\n1.70<\/td>\n16.59<\/td>\n44.5\/10114<\/td>\n56.2<\/td>\n1.84<\/td>\n<\/tr>\n
12B-2<\/td>\n19.050<\/td>\n12.07<\/td>\n11.68<\/td>\n5.72<\/td>\n42.0<\/td>\n43.6<\/td>\n16.00<\/td>\n1.85<\/td>\n19.46<\/td>\n57.8\/13136<\/td>\n66.1<\/td>\n2.31<\/td>\n<\/tr>\n
16B-2<\/td>\n25.400<\/td>\n15.88<\/td>\n17.02<\/td>\n8.28<\/td>\n68.0<\/td>\n69.3<\/td>\n21.00<\/td>\n4.15\/3.1<\/td>\n31.88<\/td>\n106.0\/24091<\/td>\n133.0<\/td>\n5.42<\/td>\n<\/tr>\n
20B-2<\/td>\n31.750<\/td>\n19.05<\/td>\n19.56<\/td>\n10.19<\/td>\n77.8<\/td>\n81.5<\/td>\n26.40<\/td>\n4.50\/3.5<\/td>\n36.45<\/td>\n170.0\/38636<\/td>\n211.2<\/td>\n7.20<\/td>\n<\/tr>\n
24B-2<\/td>\n38.100<\/td>\n25.40<\/td>\n25.40<\/td>\n14.63<\/td>\n101.7<\/td>\n106.2<\/td>\n33.20<\/td>\n6.00\/4.8<\/td>\n48.36<\/td>\n280.0\/63636<\/td>\n319.2<\/td>\n13.40<\/td>\n<\/tr>\n
28B-2<\/td>\n44.450<\/td>\n27.94<\/td>\n30.99<\/td>\n15.90<\/td>\n124.6<\/td>\n129.1<\/td>\n36.70<\/td>\n7.50\/6.0<\/td>\n59.56<\/td>\n360.0\/81818<\/td>\n406.8<\/td>\n16.60<\/td>\n<\/tr>\n
32B-2<\/td>\n50.800<\/td>\n29.21<\/td>\n30.99<\/td>\n17.81<\/td>\n124.6<\/td>\n129.6<\/td>\n42.00<\/td>\n7.00\/6.0<\/td>\n58.55<\/td>\n450.0\/102273<\/td>\n508.5<\/td>\n21.00<\/td>\n<\/tr>\n
40B-2<\/td>\n63.500<\/td>\n39.37<\/td>\n38.10<\/td>\n22.89<\/td>\n154.5<\/td>\n161.5<\/td>\n52.96<\/td>\n8.50\/8.0<\/td>\n72.29<\/td>\n630.0\/143182<\/td>\n711.9<\/td>\n32.00<\/td>\n<\/tr>\n
48B-2<\/td>\n76.200<\/td>\n48.26<\/td>\n45.72<\/td>\n29.24<\/td>\n190.4<\/td>\n198.2<\/td>\n63.80<\/td>\n12.00\/10.0<\/td>\n91.21<\/td>\n1000.0\/227272<\/td>\n1130.0<\/td>\n50.00<\/td>\n<\/tr>\n
56B-2<\/td>\n88.900<\/td>\n53.98<\/td>\n53.34<\/td>\n34.32<\/td>\n221.2<\/td>\n229.6<\/td>\n77.80<\/td>\n13.50\/12.0<\/td>\n106.60<\/td>\n1600.0\/363635<\/td>\n1760.0<\/td>\n71.48<\/td>\n<\/tr>\n
64B-2<\/td>\n101.600<\/td>\n63.50<\/td>\n60.96<\/td>\n39.40<\/td>\n249.9<\/td>\n258.4<\/td>\n90.17<\/td>\n15.00\/13.0<\/td>\n119.89<\/td>\n2000.0\/454544<\/td>\n2200.0<\/td>\n91.00<\/td>\n<\/tr>\n
72B-2<\/td>\n114.300<\/td>\n72.39<\/td>\n68.58<\/td>\n44.48<\/td>\n283.7<\/td>\n292.7<\/td>\n103.60<\/td>\n17.00\/15.0<\/td>\n136.27<\/td>\n2500.0\/568180<\/td>\n2750.0<\/td>\n120.40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Triplexn\u00ed (3vl\u00e1knov\u00e1) datov\u00e1 matice<\/h3>\n

Je d\u016fle\u017eit\u00e9 poznamenat, \u017ee instalace t\u011bchto masivn\u00edch multiplexn\u00edch pol\u00ed, zejm\u00e9na triplexn\u00edch variant, vy\u017eaduje v\u00fdhradn\u011b specializovan\u00e9 hydraulick\u00e9 lisovac\u00ed za\u0159\u00edzen\u00ed. Standardn\u00ed ru\u010dn\u00ed p\u0159eru\u0161ova\u010de \u0159et\u011bz\u016f fyzicky nejsou schopny vyvinout obrovskou bo\u010dn\u00ed s\u00edlu pot\u0159ebnou k bezpe\u010dn\u00e9mu st\u0159\u00edh\u00e1n\u00ed nebo lisov\u00e1n\u00ed ultratlust\u00fdch, kalen\u00fdch p\u0159\u00ed\u010dn\u00fdch \u010dep\u016f bez siln\u00e9ho ohnut\u00ed pevn\u00fdch vn\u011bj\u0161\u00edch bo\u010dn\u00edch desek. Spr\u00e1vn\u011b \u0159\u00edzen\u00e9 multiplexn\u00ed architektury poskytuj\u00ed absolutn\u00ed vrchol ta\u017en\u00e9 kapacity a z\u00e1rove\u0148 zachov\u00e1vaj\u00ed kompaktn\u00ed pr\u016fm\u011br rozte\u010de pot\u0159ebn\u00fd pro plynulou a vysokorychlostn\u00ed rota\u010dn\u00ed \u00fa\u010dinnost.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u010c\u00edslo DIN\/ISO<\/th>\nRozte\u010d (P) mm<\/th>\nPr\u016fm\u011br v\u00e1lce (d1)<\/th>\nVnit\u0159n\u00ed \u0161\u00ed\u0159ka (b1)<\/th>\nPr\u016fm\u011br \u010depu (d2)<\/th>\n\u010cep L max.<\/th>\nPin Lc max<\/th>\nHloubka desky (h2)<\/th>\nTlou\u0161\u0165ka plechu (T)<\/th>\nP\u0159\u00ed\u010dn\u00fd (Pt)<\/th>\nPevnost v tahu kN\/lbf<\/th>\nPr\u016fm\u011brn\u00e1 pevnost v tahu kN<\/th>\nHmotnost kg\/m\u00b2<\/th>\n<\/tr>\n<\/thead>\n
05B-3<\/td>\n8.000<\/td>\n5.00<\/td>\n3.00<\/td>\n2.31<\/td>\n19.5<\/td>\n20.2<\/td>\n7.10<\/td>\n0.80<\/td>\n5.64<\/td>\n11.1\/2523<\/td>\n13.8<\/td>\n0.48<\/td>\n<\/tr>\n
*06B-3<\/td>\n9.525<\/td>\n6.35<\/td>\n5.72<\/td>\n3.28<\/td>\n33.5<\/td>\n34.6<\/td>\n8.20<\/td>\n1.30<\/td>\n10.24<\/td>\n24.9\/5659<\/td>\n30.1<\/td>\n1.16<\/td>\n<\/tr>\n
08B-3<\/td>\n12.700<\/td>\n8.51<\/td>\n7.75<\/td>\n4.45<\/td>\n45.1<\/td>\n46.1<\/td>\n11.80<\/td>\n1.60<\/td>\n13.92<\/td>\n47.5\/10795<\/td>\n57.8<\/td>\n2.03<\/td>\n<\/tr>\n
10B-3<\/td>\n15.875<\/td>\n10.16<\/td>\n9.65<\/td>\n5.08<\/td>\n52.7<\/td>\n54.1<\/td>\n14.70<\/td>\n1.70<\/td>\n16.59<\/td>\n66.7\/15159<\/td>\n84.5<\/td>\n2.77<\/td>\n<\/tr>\n
12B-3<\/td>\n19.050<\/td>\n12.07<\/td>\n11.68<\/td>\n5.72<\/td>\n61.5<\/td>\n63.1<\/td>\n16.00<\/td>\n1.85<\/td>\n19.46<\/td>\n86.7\/19705<\/td>\n101.8<\/td>\n3.46<\/td>\n<\/tr>\n
16B-3<\/td>\n25.400<\/td>\n15.88<\/td>\n17.02<\/td>\n8.28<\/td>\n99.8<\/td>\n101.2<\/td>\n21.00<\/td>\n4.15\/3.1<\/td>\n31.88<\/td>\n160.0\/36364<\/td>\n203.7<\/td>\n8.13<\/td>\n<\/tr>\n
20B-3<\/td>\n31.750<\/td>\n19.05<\/td>\n19.56<\/td>\n10.19<\/td>\n114.2<\/td>\n117.9<\/td>\n26.40<\/td>\n4.50\/3.5<\/td>\n36.45<\/td>\n250.0\/56818<\/td>\n290.0<\/td>\n10.82<\/td>\n<\/tr>\n
24B-3<\/td>\n38.100<\/td>\n25.40<\/td>\n25.40<\/td>\n14.63<\/td>\n150.1<\/td>\n154.6<\/td>\n33.20<\/td>\n6.00\/4.8<\/td>\n48.36<\/td>\n425.0\/96591<\/td>\n493.0<\/td>\n20.10<\/td>\n<\/tr>\n
28B-3<\/td>\n44.450<\/td>\n27.94<\/td>\n30.99<\/td>\n15.90<\/td>\n184.2<\/td>\n188.7<\/td>\n36.70<\/td>\n7.50\/6.0<\/td>\n59.56<\/td>\n530.0\/120454<\/td>\n609.5<\/td>\n24.92<\/td>\n<\/tr>\n
32B-3<\/td>\n50.800<\/td>\n29.21<\/td>\n30.99<\/td>\n17.81<\/td>\n183.2<\/td>\n188.2<\/td>\n42.00<\/td>\n7.00\/6.0<\/td>\n58.55<\/td>\n670.0\/152273<\/td>\n770.5<\/td>\n31.56<\/td>\n<\/tr>\n
40B-3<\/td>\n63.500<\/td>\n39.37<\/td>\n38.10<\/td>\n22.89<\/td>\n226.8<\/td>\n233.8<\/td>\n52.96<\/td>\n8.50\/8.0<\/td>\n72.29<\/td>\n950.0\/215909<\/td>\n1092.5<\/td>\n48.10<\/td>\n<\/tr>\n
48B-3<\/td>\n76.200<\/td>\n48.26<\/td>\n45.72<\/td>\n29.24<\/td>\n281.6<\/td>\n289.4<\/td>\n63.80<\/td>\n12.00\/10.0<\/td>\n91.21<\/td>\n1500.0\/340909<\/td>\n1710.0<\/td>\n75.00<\/td>\n<\/tr>\n
56B-3<\/td>\n88.900<\/td>\n53.98<\/td>\n53.34<\/td>\n34.32<\/td>\n327.8<\/td>\n336.2<\/td>\n77.80<\/td>\n13.50\/12.0<\/td>\n106.60<\/td>\n2240.0\/545450<\/td>\n2464.0<\/td>\n107.18<\/td>\n<\/tr>\n
64B-3<\/td>\n101.600<\/td>\n63.50<\/td>\n60.96<\/td>\n39.40<\/td>\n369.8<\/td>\n378.3<\/td>\n90.17<\/td>\n15.00\/13.0<\/td>\n119.89<\/td>\n3000.0\/681820<\/td>\n3300.0<\/td>\n136.00<\/td>\n<\/tr>\n
72B-3<\/td>\n114.300<\/td>\n72.39<\/td>\n68.58<\/td>\n44.48<\/td>\n420.0<\/td>\n429.0<\/td>\n103.60<\/td>\n17.00\/15.0<\/td>\n136.27<\/td>\n3750.0\/852270<\/td>\n4125.0<\/td>\n180.00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Hlavn\u00ed mechanick\u00e9 v\u00fdhody a odolnost proti \u00fanav\u011b<\/h2>\n

Pr\u016fmyslov\u00e9 p\u0159evodov\u00e9 mechanismy z\u0159\u00eddka selh\u00e1vaj\u00ed v d\u016fsledku jednor\u00e1zov\u00e9ho, masivn\u00edho statick\u00e9ho p\u0159et\u00ed\u017een\u00ed. Sp\u00ed\u0161e selh\u00e1vaj\u00ed v d\u016fsledku nahromad\u011bn\u00e9ho mikroskopick\u00e9ho nap\u011bt\u00ed zp\u016fsoben\u00e9ho miliony rychl\u00fdch rota\u010dn\u00edch cykl\u016f. Technick\u00e1 fyzika definuje \u00fanavovou pevnost jako maxim\u00e1ln\u00ed trval\u00e9 zat\u00ed\u017een\u00ed, kter\u00e9 m\u016f\u017ee sou\u010d\u00e1st sn\u00e1\u0161et donekone\u010dna, ani\u017e by selhala v d\u016fsledku cyklick\u00e9ho nam\u00e1h\u00e1n\u00ed. \u0158ada B v\u00e1le\u010dkov\u00fd \u0159et\u011bz<\/a> zaru\u010duje \u00fanavovou pevnost p\u0159esn\u011b odpov\u00eddaj\u00edc\u00ed zhruba 1\/9 maxim\u00e1ln\u00ed ta\u017en\u00e9 \u00fanosnosti \u0159et\u011bzu. Na\u0161e specializovan\u00e1 v\u00fdroba aktivn\u011b bojuje proti struktur\u00e1ln\u00ed degradaci prost\u0159ednictv\u00edm intenzivn\u00edch, lokalizovan\u00fdch povrchov\u00fdch \u00faprav a optimalizovan\u00e9ho tepeln\u00e9ho in\u017een\u00fdrstv\u00ed.<\/p>\n

\n
\n
\u2699\ufe0f<\/div>\n

Pokro\u010dil\u00e1 povrchov\u00e1 \u00faprava zpev\u0148ov\u00e1n\u00edm tryskou<\/strong><\/p>\n

Vysokouhl\u00edkov\u00e9 ocelov\u00e9 desky jsou bombardov\u00e1ny mikroskopick\u00fdmi kulovit\u00fdmi m\u00e9dii obrovsk\u00fdmi rychlostmi. Tento intenzivn\u00ed proces tv\u00e1\u0159en\u00ed za studena vytv\u00e1\u0159\u00ed na povrchu kovu hlubokou vrstvu prosp\u011b\u0161n\u00e9ho zbytkov\u00e9ho tlakov\u00e9ho nap\u011bt\u00ed. To \u00fa\u010dinn\u011b ut\u011bs\u0148uje mikroskopick\u00e9 povrchov\u00e9 nedokonalosti, kter\u00e9 zbyly z procesu lisov\u00e1n\u00ed, a drasticky oddaluje vznik \u00fanavov\u00fdch trhlin p\u0159i siln\u00e9m cyklick\u00e9m zat\u00ed\u017een\u00ed.<\/p>\n<\/div>\n

\n
\ud83d\udee2\ufe0f<\/div>\n

Vakuov\u00e9 vnit\u0159n\u00ed hydrodynamick\u00e9 maz\u00e1n\u00ed<\/strong><\/p>\n

Vn\u011bj\u0161\u00ed olejov\u00e9 spreje aplikovan\u00e9 \u00fadr\u017eb\u00e1\u0159sk\u00fdmi t\u00fdmy jen z\u0159\u00eddka pronikaj\u00ed mikroskopickou mezerou mezi \u010depem a pln\u00fdm pouzdrem. B\u011bhem fin\u00e1ln\u00ed mont\u00e1\u017ee jsou na\u0161e \u0159et\u011bzy vakuov\u011b vst\u0159ikov\u00e1ny vysoce visk\u00f3zn\u00edmi mazivy proti opot\u0159eben\u00ed. T\u00edm se vytvo\u0159\u00ed trval\u00fd hydrodynamick\u00fd film, kter\u00fd odd\u011bluje kovov\u00e9 povrchy zevnit\u0159, siln\u011b odol\u00e1v\u00e1 infiltraci abrazivn\u00edho k\u0159emi\u010dit\u00e9ho prachu a zabra\u0148uje zad\u0159en\u00ed \u010dep\u016f.<\/p>\n<\/div>\n

\n
\ud83d\udd29<\/div>\n

Beze\u0161v\u00e9 za studena protla\u010dovan\u00e9 pln\u00e9 v\u00e1lce<\/strong><\/p>\n

Generick\u00e9 varianty z druhov\u00fdroby \u010dasto pou\u017e\u00edvaj\u00ed zvln\u011bn\u00e9 nebo d\u011blen\u00e9 v\u00e1lce s v\u00fdrazn\u00fdm fyzick\u00fdm svarem. Vysokorychlostn\u00ed n\u00e1razov\u00e9 s\u00edly tento svar opakovan\u011b oh\u00fdbaj\u00ed, co\u017e nakonec zp\u016fsobuje struktur\u00e1ln\u00ed \u00fanavu a prask\u00e1n\u00ed. Na\u0161e pevn\u00e1 architektura protla\u010dovan\u00e1 za studena dokonale rozkl\u00e1d\u00e1 kinetick\u00e9 n\u00e1razov\u00e9 s\u00edly po beze\u0161v\u00e9m 360stup\u0148ov\u00e9m v\u00e1lci, co\u017e zaji\u0161\u0165uje maxim\u00e1ln\u00ed \u017eivotnost.<\/p>\n<\/div>\n

\n
\ud83c\udfaf<\/div>\n

V\u00fdroba p\u0159esn\u00fdch otvor\u016f s rozte\u010d\u00ed<\/strong><\/p>\n

Standardn\u00ed, levn\u00e9 ocelov\u00e9 desky jsou brut\u00e1ln\u011b d\u011brov\u00e1ny, p\u0159i\u010dem\u017e uvnit\u0159 rozte\u010dn\u00fdch otvor\u016f z\u016fst\u00e1vaj\u00ed mikroskopick\u00e9 ot\u0159epy zp\u016fsobuj\u00edc\u00ed zvy\u0161ov\u00e1n\u00ed nap\u011bt\u00ed. My pou\u017e\u00edv\u00e1me v\u00edcestup\u0148ov\u00e9 techniky fr\u00e9zov\u00e1n\u00ed a p\u0159esn\u00e9ho shavingov\u00e1n\u00ed, \u010d\u00edm\u017e vytv\u00e1\u0159\u00edme vnit\u0159n\u011b le\u0161t\u011bn\u00fd, dokonale v\u00e1lcov\u00fd otvor, kter\u00fd s bezchybnou kolmost\u00ed uchop\u00ed kalen\u00e9 \u010depy a zcela zabr\u00e1n\u00ed tak kroucen\u00ed bo\u010dn\u00edch desek p\u0159i extr\u00e9mn\u00edm to\u010div\u00e9m momentu.<\/p>\n<\/div>\n<\/div>\n

\"Anatomie<\/div>\n

Integrace n\u00e1boje a anatomie ozuben\u00e9ho kola<\/h2>\n

I ten nejdokonaleji navr\u017een\u00fd flexibiln\u00ed p\u0159enos v\u00fdkonu je zcela k ni\u010demu, pokud je sp\u00e1rov\u00e1n s degradovan\u00fdmi, \u0161patn\u011b vyrovnan\u00fdmi rotuj\u00edc\u00edmi n\u00e1boji. In\u017een\u00fd\u0159i mus\u00ed d\u016fkladn\u011b prozkoumat anatomie ozuben\u00e9ho kola<\/strong> P\u0159ed zah\u00e1jen\u00edm jak\u00e9koli instalace hnac\u00edho \u00fastroj\u00ed. Vysoce kvalitn\u00ed n\u00e1boj m\u00e1 p\u0159esn\u011b odvalovan\u00fd evolventn\u00ed profil zub\u016f, kter\u00fd umo\u017e\u0148uje pln\u00fdm za studena protla\u010dovan\u00fdm v\u00e1le\u010dk\u016fm plynul\u00fd pohyb do dutiny ko\u0159ene bez drsn\u00e9ho a abrazivn\u00edho klouz\u00e1n\u00ed. Metrick\u00e9 \u0159et\u011bzy \u0159ady B striktn\u011b vy\u017eaduj\u00ed odpov\u00eddaj\u00edc\u00ed ozuben\u00e1 kola dle ISO\/metrick\u00fdch rozm\u011br\u016f. Pou\u017eit\u00ed ozuben\u00e9ho kola \u0159ady ANSI A na \u0159et\u011bz \u0159ady B povede k okam\u017eit\u00e9 geometrick\u00e9 interferenci, nesouladu rozte\u010de a katastrofick\u00e9mu selh\u00e1n\u00ed v d\u016fsledku rozd\u00edln\u00fdch pr\u016fm\u011br\u016f v\u00e1le\u010dk\u016f a p\u0159\u00ed\u010dn\u00fdch rozte\u010d\u00ed.<\/p>\n

\"Induk\u010dn\u011b<\/div>\n

Dod\u00e1v\u00e1me p\u0159esn\u011b odvalovan\u00e9 ozuben\u00e1 kola<\/a> navr\u017eeny jako p\u0159esn\u00e9 kinetick\u00e9 p\u00e1ry pro na\u0161e t\u00e1hla \u0159ady B. Na\u0161e n\u00e1boje se vyzna\u010duj\u00ed evolventn\u00ed geometri\u00ed zub\u016f, kter\u00e1 je striktn\u011b kalibrov\u00e1na pro z\u00e1b\u011br s kr\u00e1tkou rozte\u010d\u00ed, co\u017e zaji\u0161\u0165uje rovnom\u011brn\u00e9 rozlo\u017een\u00ed zat\u00ed\u017een\u00ed na v\u00edce zub\u016f sou\u010dasn\u011b. D\u00e1le aplikujeme c\u00edlen\u00e9 vysokofrekven\u010dn\u00ed induk\u010dn\u00ed kalen\u00ed v\u00fdhradn\u011b na boky zub\u016f. T\u00edm se dosahuje tvrdosti dle Rockwella HRC 45-50 p\u0159\u00edmo v kontaktn\u00ed plo\u0161e, co\u017e dramaticky odol\u00e1v\u00e1 abrazivn\u00edmu t\u0159en\u00ed vysokorychlostn\u00edch v\u00e1le\u010dk\u016f. D\u016fle\u017eit\u00e9 je, \u017ee z\u00e1m\u011brn\u011b udr\u017eujeme tv\u00e1rn\u00e9, m\u011bk\u010d\u00ed j\u00e1dro uvnit\u0159 t\u011blesa \u0159et\u011bzov\u00e9ho kola, kter\u00e9 absorbuje nep\u0159edv\u00eddateln\u00e9 vibrace stroje a n\u00e1hl\u00e9 r\u00e1zy, ani\u017e by se rozbily zuby ozuben\u00e9ho kola. Z\u00e1va\u017enou chybou p\u0159i \u00fadr\u017eb\u011b, se kterou se \u010dasto setk\u00e1v\u00e1me ve v\u00fdrob\u011b, je v\u00fdm\u011bna siln\u011b prota\u017een\u00e9ho \u0159et\u011bzu, zat\u00edmco p\u016fvodn\u00ed \u0159et\u011bzov\u00e1 kola ponech\u00e1vaj\u00ed na h\u0159\u00eddel\u00edch. Provoz zcela nov\u00e9ho, dokonale dimenzovan\u00e9ho t\u00e1hla \u0159ady B na siln\u011b opot\u0159ebovan\u00fdch, \u201ezah\u00e1kovan\u00fdch\u201c zubech \u0159et\u011bzov\u00e9ho kola donut\u00ed deformovanou geometrii ozuben\u00e9ho kola n\u00e1siln\u011b obru\u0161ovat ztvrdl\u00fd povrch nov\u00fdch v\u00e1le\u010dk\u016f. Tato praxe efektivn\u011b zkracuje \u017eivotnost nov\u011b instalovan\u00e9ho vylep\u0161en\u00ed p\u0159evodovky o v\u00edce ne\u017e pades\u00e1t procent. P\u0159i gener\u00e1ln\u00ed oprav\u011b prim\u00e1rn\u00edch sou\u010d\u00e1st\u00ed hnac\u00edho \u00fastroj\u00ed v\u017edy vym\u011b\u0148ujte ozuben\u00e9 n\u00e1boje sou\u010dasn\u011b, abyste zajistili absolutn\u00ed mechanickou synchronizaci.<\/p>\n

Glob\u00e1ln\u00ed sc\u00e9n\u00e1\u0159e pr\u016fmyslov\u00fdch aplikac\u00ed<\/h2>\n

Vzhledem k inherentn\u011b sn\u00ed\u017een\u00e9mu polygonov\u00e9mu efektu spojen\u00e9mu s kr\u00e1tk\u00fdmi rozte\u010demi a p\u0159\u00edsn\u00e9 rozm\u011brov\u00e9 p\u0159esnosti, kter\u00e1 je vlastn\u00ed standardizaci BS\/DIN, jsou tyto specifick\u00e9 pohonn\u00e9 jednotky velmi obl\u00edben\u00e9 v odv\u011btv\u00edch vy\u017eaduj\u00edc\u00edch absolutn\u011b plynul\u00fd a nep\u0159etr\u017eit\u00fd kinetick\u00fd p\u0159enos p\u0159i vysok\u00fdch ot\u00e1\u010dk\u00e1ch.<\/p>\n

Zem\u011bd\u011blsk\u00e9 skliz\u0148ov\u00e9 mechanismy<\/h3>\n

Modern\u00ed skl\u00edzec\u00ed ml\u00e1ti\u010dky evropsk\u00e9 konstrukce a velk\u00e9 zem\u011bd\u011blsk\u00e9 obiln\u00e9 sily vystavuj\u00ed sv\u00e9 vnit\u0159n\u00ed hnac\u00ed \u00fastroj\u00ed intenzivn\u011b pra\u0161n\u00fdm a abrazivn\u00edm poln\u00edm podm\u00ednk\u00e1m a z\u00e1rove\u0148 vy\u017eaduj\u00ed vysoce synchronizovan\u00e9 rozvody. Precizn\u00ed kr\u00e1tk\u00e1 rozte\u010d kol vysoce odoln\u00e9 ozuben\u00e9 kolo a \u0159et\u011bz<\/strong> Toto uspo\u0159\u00e1d\u00e1n\u00ed fyzicky blokuje abrazivn\u00ed k\u0159emi\u010dit\u00fd prach z vnit\u0159n\u00edch mezer, \u010d\u00edm\u017e zaji\u0161\u0165uje, \u017ee skl\u00edzec\u00ed adapt\u00e9ry si udr\u017euj\u00ed p\u0159esn\u00e9 mechanick\u00e9 na\u010dasov\u00e1n\u00ed b\u011bhem kr\u00e1tk\u00fdch a velmi kritick\u00fdch sez\u00f3nn\u00edch skliz\u0148ov\u00fdch obdob\u00ed ve venkovsk\u00fdch oblastech.<\/p>\n

\"\"<\/div>\n

Vysokorychlostn\u00ed pr\u016fmyslov\u00e9 dopravn\u00edky<\/h3>\n

V r\u00e1mci rychl\u00fdch automatizovan\u00fdch v\u00fdrobn\u00edch center a center pro vy\u0159izov\u00e1n\u00ed objedn\u00e1vek, t\u011b\u017ek\u00e9 dopravn\u00edkov\u00fd \u0159et\u011bz<\/strong> S\u00edt\u011b b\u011b\u017e\u00ed t\u00e9m\u011b\u0159 nep\u0159etr\u017eit\u011b 24 hodin denn\u011b, 7 dn\u00ed v t\u00fddnu. Dlouh\u00e9 rozte\u010de vazeb p\u0159irozen\u011b vyvol\u00e1vaj\u00ed p\u0159i vysok\u00fdch provozn\u00edch rychlostech siln\u00e9 vertik\u00e1ln\u00ed chv\u011bn\u00ed \u2013 zn\u00e1m\u00e9 jako chordal action. Toto vertik\u00e1ln\u00ed ohrani\u010den\u00ed rozmaz\u00e1v\u00e1 laserov\u00e9 skenery \u010d\u00e1rov\u00fdch k\u00f3d\u016f, destabilizuje jemnou elektroniku a naru\u0161uje lehk\u00e9 obaly. P\u0159esn\u00e1 \u0159ada B drasticky minimalizuje toto vertik\u00e1ln\u00ed chv\u011bn\u00ed a vytv\u00e1\u0159\u00ed dokonale hladkou podlahu pro manipulaci s materi\u00e1lem, kter\u00e1 je schopna bezpe\u010dn\u011b a ti\u0161e un\u00e9st extr\u00e9mn\u011b vysok\u00e9 line\u00e1rn\u00ed p\u0159enosov\u00e9 rychlosti v stop\u00e1ch za minutu.<\/p>\n

T\u011b\u017eba a t\u0159\u00edd\u011bn\u00ed t\u011b\u017ek\u00e9ho kameniva<\/h3>\n

Hlubok\u00e9 \u0161achtov\u00e9 elev\u00e1tory na miner\u00e1ly a t\u011b\u017ek\u00e9 z\u00e1v\u011bsn\u00e9 podava\u010de tahaj\u00ed vertik\u00e1ln\u011b proti gravitaci mnohatunov\u00e9 n\u00e1klady kameniva. V t\u011bchto sc\u00e9n\u00e1\u0159\u00edch n\u00e1hl\u00e9 mechanick\u00e9 zastaven\u00ed vy\u0161le brut\u00e1ln\u00ed r\u00e1zovou vlnu hnac\u00edm \u00fastroj\u00edm. Nasazen\u00ed na\u0161ich trojit\u00fdch \u0159et\u011bz\u016f pro vysokou z\u00e1t\u011b\u017e zaji\u0161\u0165uje, \u017ee se tento n\u00e1hl\u00fd kinetick\u00fd n\u00e1raz bezpe\u010dn\u011b rozpt\u00fdl\u00ed p\u0159es t\u0159i zes\u00edlen\u00e9 \u0159ady desek, \u010d\u00edm\u017e se zcela zabr\u00e1n\u00ed selh\u00e1n\u00ed v\u00fdbu\u0161n\u00fdch t\u00e1hel a maximalizuje se bezpe\u010dnost pracovn\u00edk\u016f v okol\u00ed stroj\u016f. Vysok\u00e1 tahov\u00e1 pevnost je v t\u011bchto \u0161pi\u010dkov\u00fdch pr\u016fmyslov\u00fdch prost\u0159ed\u00edch nezbytn\u00e1. T\u011b\u017eebn\u00ed operace \u010dasto vyu\u017e\u00edvaj\u00ed siln\u011b vyztu\u017een\u00e9 \u0159et\u011bzy \u0159ady B, proto\u017ee robustn\u00ed pr\u016fm\u011bry \u010dep\u016f odol\u00e1vaj\u00ed extr\u00e9mn\u00edm smykov\u00fdm sil\u00e1m vznikaj\u00edc\u00edm p\u0159i zasek\u00e1v\u00e1n\u00ed nadm\u011brn\u011b velk\u00fdch hornin v prim\u00e1rn\u00edch drtic\u00edch bubnech. T\u00edm, \u017ee tyto trojit\u00e9 syst\u00e9my zabra\u0148uj\u00ed katastrofick\u00e9mu smyku \u010dep\u016f, eliminuj\u00ed dny nepl\u00e1novan\u00fdch prostoj\u016f a zaji\u0161\u0165uj\u00ed, \u017ee potrub\u00ed pro t\u011b\u017ebu surovin z\u016fstane vysoce ziskov\u00e9 a nep\u0159etr\u017eit\u011b funk\u010dn\u00ed.<\/p>\n

V\u00fdrobn\u00ed infrastruktura a zaji\u0161t\u011bn\u00ed kvality s certifikac\u00ed ISO<\/h2>\n

Obstar\u00e1v\u00e1n\u00ed p\u0159evodov\u00fdch komponent\u016f dle DIN 8187 vy\u017eaduje in\u017een\u00fdrsk\u00e9 partnerstv\u00ed schopn\u00e9 dodat p\u0159\u00edsnou metalurgii s certifikac\u00ed ISO 606:2015 v kr\u00e1tk\u00fdch pr\u016fmyslov\u00fdch term\u00ednech. Ve spole\u010dnosti Korea Ever-Power Chain and Sprocket Co.,Ltd lokalizujeme masivn\u00ed fyzick\u00e9 z\u00e1soby v Ji\u017en\u00ed Koreji, \u010d\u00edm\u017e se zcela vyh\u00fdb\u00e1me nep\u0159edv\u00eddateln\u00fdm zpo\u017ed\u011bn\u00edm mezin\u00e1rodn\u00ed n\u00e1mo\u0159n\u00ed p\u0159epravy. To n\u00e1m umo\u017e\u0148uje prakticky p\u0159es noc odes\u00edlat t\u011b\u017ek\u00e9 v\u00edcepramenn\u00e9 n\u00e1hrady nap\u0159\u00ed\u010d asijskou pr\u016fmyslovou z\u00e1kladnou, co\u017e drasticky minimalizuje prostoje za\u0159\u00edzen\u00ed. Dosa\u017een\u00ed masivn\u00edch kone\u010dn\u00fdch pevnost\u00ed v tahu vy\u017eaduje nekompromisn\u00ed v\u00fdrobn\u00ed discipl\u00ednu. Na\u0161e pece s kontinu\u00e1ln\u00edm s\u00ed\u0165ov\u00fdm p\u00e1sem zaru\u010duj\u00ed zcela rovnom\u011brn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed a zaji\u0161\u0165uj\u00ed p\u0159esnou difuzi uhl\u00edku hluboko do lo\u017eisek \u010dep\u016f a pouzder. Pokro\u010dil\u00e9 robotick\u00e9 sva\u0159ovac\u00ed bu\u0148ky ABB zaji\u0161\u0165uj\u00ed, \u017ee specializovan\u00e9 upev\u0148ovac\u00ed desky nikdy netrp\u00ed nekonzistentn\u00edm prova\u0159en\u00edm svaru, \u010d\u00edm\u017e eliminujeme slab\u00e1 m\u00edsta.<\/p>\n

\"Automatizovan\u00e1<\/div>\n

Ka\u017ed\u00e1 jednotliv\u00e1 v\u00fdrobn\u00ed \u0161ar\u017ee proch\u00e1z\u00ed p\u0159\u00edsn\u00fdmi destruktivn\u00edmi z\u00e1t\u011b\u017eov\u00fdmi zkou\u0161kami, aby se empiricky ov\u011b\u0159ilo, \u017ee z\u00e1kladn\u00ed pevnost v tahu ISO je v\u00fdrazn\u011b p\u0159ekro\u010dena, ne\u017e jsou d\u00edly bezpe\u010dn\u011b vakuov\u011b ut\u011bsn\u011bny, aby se zabr\u00e1nilo oxidaci p\u0159i p\u0159eprav\u011b. Norma ISO 606 d\u00e1le specifikuje povinn\u00fd rozm\u011br p\u0159edp\u011bt\u00ed (EO), kter\u00fd fyzicky odstra\u0148uje po\u010d\u00e1te\u010dn\u00ed konstruk\u010dn\u00ed rozta\u017een\u00ed z montovan\u00fdch komponent. V\u0161echny na\u0161e p\u0159esn\u00e9 \u0159et\u011bzy \u0159ady B jsou v tov\u00e1rn\u011b dynamicky p\u0159edp\u011bty na zhruba 30% jejich kone\u010dn\u00e9 pevnosti v tahu. Toto obrovsk\u00e9 hydraulick\u00e9 nap\u011bt\u00ed trvale usazuje \u010depy a pevn\u00e1 pouzdra pevn\u011b do bo\u010dn\u00edch desek, \u010d\u00edm\u017e drasticky sni\u017euje prodlou\u017een\u00ed p\u0159i z\u00e1b\u011bhu. Tento kritick\u00fd krok zaji\u0161t\u011bn\u00ed kvality zaru\u010duje, \u017ee technici \u00fadr\u017eby nemus\u00ed zastavovat velkoobjemov\u00e9 v\u00fdrobn\u00ed linky, aby b\u011bhem prvn\u00edch kritick\u00fdch 48 hodin mechanick\u00e9ho provozu neust\u00e1le nastavovali nap\u00edn\u00e1ky a nap\u00edna\u010de. Kombinac\u00ed pokro\u010dil\u00e9 robotiky s p\u0159\u00edsnou metalurgickou v\u011bdou dod\u00e1v\u00e1me p\u0159evodov\u00e1 \u0159e\u0161en\u00ed, kter\u00e1 nastavuj\u00ed glob\u00e1ln\u00ed standard pro spolehlivost, odolnost a nepoddajnou pevnost v tahu. P\u0159i srovn\u00e1n\u00ed t\u011bchto masivn\u00edch pr\u016fmyslov\u00fdch energetick\u00fdch komponent s vysokorychlostn\u00edm... \u0159et\u011bz a pastorek motocyklu<\/strong> nastaven\u00ed se in\u017een\u00fdrsk\u00e9 zam\u011b\u0159en\u00ed zcela p\u0159esouv\u00e1. Pr\u016fmyslov\u00e1 v\u00fdroba \u0159ady B up\u0159ednost\u0148uje t\u011b\u017ekou ocelovou hmotu s pr\u016f\u0159ezem p\u0159ed lehkou agilnost\u00ed, co\u017e zaji\u0161\u0165uje bezprobl\u00e9mov\u00fd pohyb mnohatunov\u00fdch pr\u016fmyslov\u00fdch b\u0159emen bez rizika n\u00e1hl\u00e9 plastick\u00e9 deformace.<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky k preventivn\u00ed \u00fadr\u017eb\u011b a provozn\u00ed zp\u011btn\u00e1 vazba<\/h2>\n

Spr\u00e1va pokro\u010dil\u00fdch pr\u016fmyslov\u00fdch p\u0159evodov\u00fdch syst\u00e9m\u016f vy\u017eaduje specifick\u00e9 technick\u00e9 znalosti, aby se zabr\u00e1nilo chemick\u00e9 nebo fyzik\u00e1ln\u00ed degradaci. N\u00ed\u017ee uv\u00e1d\u00edme definitivn\u00ed odpov\u011bdi na nejn\u00e1ro\u010dn\u011bj\u0161\u00ed provozn\u00ed dotazy od tov\u00e1rn\u00edch mechanik\u016f, n\u00e1sledovan\u00e9 ov\u011b\u0159enou zp\u011btnou vazbou od v\u00fdrobc\u016f origin\u00e1ln\u00edho vybaven\u00ed (OEM).<\/p>\n

\n
\nP\u0159i jak\u00e9m procentu prodlou\u017een\u00ed je nutn\u00e9 vym\u011bnit \u0159et\u011bz \u0159ady B?+<\/span><\/summary>\n
Standardn\u00ed in\u017een\u00fdrsk\u00fd protokol na\u0159izuje povinnou v\u00fdm\u011bnu, kdy\u017e celkov\u00e9 prodlou\u017een\u00ed dos\u00e1hne p\u0159esn\u011b 3,01 TP3T p\u016fvodn\u011b nam\u011b\u0159en\u00e9ho segmentu. U vysokorychlostn\u00edch aplikac\u00ed vy\u017eaduj\u00edc\u00edch p\u0159esn\u00e9 na\u010dasov\u00e1n\u00ed na\u0161i in\u017een\u00fd\u0159i uplat\u0148uj\u00ed p\u0159\u00edsn\u011bj\u0161\u00ed prahovou hodnotu v\u00fdm\u011bny 1,51 TP3T, aby se zabr\u00e1nilo agresivn\u00edmu vyr\u00fdv\u00e1n\u00ed ozuben\u00fdch bok\u016f \u0159et\u011bzov\u00fdch kol pln\u00fdmi v\u00e1le\u010dky, co\u017e by mohlo zni\u010dit evolventn\u00ed k\u0159ivku ozuben\u00e9ho kola.<\/div>\n<\/details>\n
\nJak\u00e9 maz\u00e1n\u00ed se doporu\u010duje pro prost\u0159ed\u00ed s vysok\u00fdm obsahem pol\u00e9tav\u00e9ho prachu?+<\/span><\/summary>\n
Zcela se vyhn\u011bte hust\u00fdm, vysoce lepiv\u00fdm maziv\u016fm. Hust\u00e9 mazivo funguje jako lapa\u010d abrazivn\u00edho k\u0159emi\u010dit\u00e9ho prachu, kter\u00fd vtahuje p\u0159\u00edmo do v\u016fl\u00ed pouzder a vytv\u00e1\u0159\u00ed destruktivn\u00ed brusnou pastu. Pou\u017e\u00edvejte vysoce visk\u00f3zn\u00ed penetra\u010dn\u00ed syntetick\u00e9 oleje, kter\u00e9 se aplikuj\u00ed ihned po vypnut\u00ed stroje. To umo\u017e\u0148uje, aby se nosn\u00e9 rozpou\u0161t\u011bdlo p\u0159es noc odpa\u0159ilo a zanechalo such\u00fd, vysoce odoln\u00fd vnit\u0159n\u00ed ochrann\u00fd film.<\/div>\n<\/details>\n
\nMohu opravit po\u0161kozenou triplexn\u00ed sestavu pomoc\u00ed standardn\u00edch jednovl\u00e1knov\u00fdch hlavn\u00edch \u010dl\u00e1nk\u016f?+<\/span><\/summary>\n
Rozhodn\u011b ne. V\u00edcepramenn\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed se zcela spol\u00e9h\u00e1 na p\u0159esnou p\u0159\u00ed\u010dnou rozte\u010d (Pt) mezi rovnob\u011b\u017en\u00fdmi \u0159adami, aby se vyv\u00e1\u017eilo masivn\u00ed smykov\u00e9 zat\u00ed\u017een\u00ed. V\u00fdm\u011bna po\u0161kozen\u00e9ho segmentu za uvoln\u011bn\u00e9 nebo nesourod\u00e9 jednopramenn\u00e9 hlavn\u00ed \u010dl\u00e1nky okam\u017eit\u011b zkresl\u00ed p\u0159enos v\u00fdkonu v\u00fdhradn\u011b do jedn\u00e9 \u0159ady a zp\u016fsob\u00ed rozbit\u00ed sestavy vlivem kroutic\u00edho momentu. V\u017edy m\u011bjte na sklad\u011b odpov\u00eddaj\u00edc\u00ed v\u00edcepramenn\u00e9 hlavn\u00ed \u010dl\u00e1nky.<\/div>\n<\/details>\n<\/div>\n

Ov\u011b\u0159en\u00e1 provozn\u00ed zp\u011btn\u00e1 vazba<\/h3>\n
Park Sung-min, technik skl\u00edzec\u00ed ml\u00e1ti\u010dky, \u010colla-do (polovina roku 2025)<\/strong>
\n\u201eV minul\u00e9 sez\u00f3n\u011b jsme upgradovali hlavn\u00ed ml\u00e1tic\u00ed pohony na precizn\u00ed \u0159adu 16B-1. D\u00edky dynamick\u00e9mu p\u0159edp\u011bt\u00ed z v\u00fdroby jsme b\u011bhem kritick\u00e9ho prvn\u00edho t\u00fddne sklizn\u011b neztr\u00e1celi p\u016fl dne dop\u00edn\u00e1n\u00edm pohon\u016f. Bezchybn\u011b zvl\u00e1daj\u00ed brut\u00e1ln\u00ed rota\u010dn\u00ed setrva\u010dnost t\u011b\u017ek\u00e9ho ml\u00e1tic\u00edho bubnu. Neuv\u011b\u0159iteln\u00e1 odolnost proti \u00fanav\u011b.\u201c<\/span><\/div>\n
\n
Lee Hye-kyo, vedouc\u00ed automatizace dopravn\u00edk\u016f, Incheon (za\u010d\u00e1tek roku 2026)<\/strong>
\n\u201eP\u016fsoben\u00ed t\u011btivy siln\u011b vibrovalo na\u0161e jemn\u00e9 z\u00e1sobn\u00edky elektronick\u00fdch sou\u010d\u00e1stek na vysokorychlostn\u00ed t\u0159\u00eddic\u00ed lince. P\u0159epnut\u00edm na duplexn\u00ed konfiguraci s krat\u0161\u00ed rozte\u010d\u00ed (12B-2) se kinematick\u00fd z\u00e1b\u011br zcela vyhladil. Sn\u00ed\u017eili jsme okoln\u00ed hluk o 15% a bezpe\u010dn\u011b zv\u00fd\u0161ili rychlost linky. P\u0159\u00ed\u010dn\u00e9 vyrovn\u00e1n\u00ed n\u00e1boj\u016f je naprosto perfektn\u00ed.\u201c<\/span><\/div>\n
\n
Choi Dae-hyun, \u0159editel \u00fadr\u017eby z\u00e1vodu, Ulsan (konec roku 2025)<\/strong>
\n\u201eU na\u0161ich fr\u00e9zovac\u00edch za\u0159\u00edzen\u00ed evropsk\u00e9 konstrukce se spol\u00e9h\u00e1me v\u00fdhradn\u011b na t\u011b\u017ek\u00e9 triplexn\u00ed soustavy 32B-3. Samotn\u00e1 pevnost v tahu pot\u0159ebn\u00e1 k ot\u00e1\u010den\u00ed t\u011bchto masivn\u00edch bubn\u016f okam\u017eit\u011b zlom\u00ed b\u011b\u017en\u00e9 sou\u010d\u00e1sti. Tato specifick\u00e1 \u0159ada B pevn\u011b dr\u017e\u00ed vnit\u0159n\u00ed maz\u00e1n\u00ed a pevn\u00e9 v\u00e1lce lisovan\u00e9 za studena se nerozbij\u00ed pod vysok\u00fdm to\u010div\u00fdm momentem.\u201c<\/span><\/div>\n<\/div>\n
<\/div>","protected":false},"excerpt":{"rendered":"

Udr\u017eov\u00e1n\u00ed synchronizovan\u00e9ho kinetick\u00e9ho pohybu nap\u0159\u00ed\u010d vysokokapacitn\u00edmi evropsk\u00fdmi a asijsk\u00fdmi OEM za\u0159\u00edzen\u00edmi vy\u017eaduje p\u0159\u00edsn\u00e9 dodr\u017eov\u00e1n\u00ed p\u0159esn\u00e9 rozm\u011brov\u00e9 geometrie. P\u0159esn\u00e9 v\u00e1le\u010dkov\u00e9 \u0159et\u011bzy s kr\u00e1tkou rozte\u010d\u00ed \u0159ady B<\/strong> jsou pe\u010dliv\u011b navr\u017eeny tak, aby spl\u0148ovaly p\u0159esn\u00e9 rozm\u011brov\u00e9 tolerance stanoven\u00e9 specifikacemi ISO 606, DIN 8187 a BS 228. Optimalizac\u00ed vnit\u0159n\u00ed metalurgie pomoc\u00ed p\u0159esn\u00e9ho kuli\u010dkov\u00e1n\u00ed a pokro\u010dil\u00e9 tepeln\u00e9 dif\u00faze tyto sestavy poskytuj\u00ed nesm\u00edrnou odolnost proti \u00fanav\u011b materi\u00e1lu pot\u0159ebnou pro nep\u0159etr\u017eit\u00fd provoz na t\u011b\u017ek\u00fdch zem\u011bd\u011blsk\u00fdch stroj\u00edch, pr\u016fmyslov\u00fdch dopravn\u00edc\u00edch materi\u00e1lu a vysokorychlostn\u00edch balic\u00edch link\u00e1ch, ani\u017e by do\u0161lo k destruktivn\u00edmu plastick\u00e9mu prodlou\u017een\u00ed.<\/p>","protected":false},"featured_media":3164,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[6657],"product_tag":[],"class_list":{"0":"post-3175","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-chain","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/product\/3175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/comments?post=3175"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/media\/3164"}],"wp:attachment":[{"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/media?parent=3175"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/product_brand?post=3175"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/product_cat?post=3175"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/sprocket-chain.net\/cs\/wp-json\/wp\/v2\/product_tag?post=3175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}