{"id":11848,"date":"2026-06-29T08:30:43","date_gmt":"2026-06-29T08:30:43","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?post_type=posts&#038;p=11848"},"modified":"2026-06-29T08:31:16","modified_gmt":"2026-06-29T08:31:16","slug":"overhead-crane-rail-installation-tolerances","status":"publish","type":"posts","link":"https:\/\/www.kscranegroup.com\/vi\/posts\/overhead-crane-rail-installation-tolerances\/","title":{"rendered":"Dung sai l\u1eafp \u0111\u1eb7t ray c\u1ea7n c\u1ea9u tr\u00ean cao \u2014 10 b\u01b0\u1edbc ki\u1ec3m tra ch\u1ea5p nh\u1eadn d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n ISO 12488-1:2012"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>M\u1ee5c l\u1ee5c<\/p><nav><ul><li><a href=\"#which-standard-applies-to-overhead-crane-rail-installation-tolerances\">Ti\u00eau chu\u1ea9n n\u00e0o \u00e1p d\u1ee5ng cho dung sai l\u1eafp \u0111\u1eb7t ray c\u1ea7n c\u1ea9u tr\u00ean cao?<\/a><\/li><li><a href=\"#overhead-crane-rail-installation-tolerances-grade-determination\">Dung sai l\u1eafp \u0111\u1eb7t \u0111\u01b0\u1eddng ray c\u1ea7n c\u1ea9u tr\u00ean cao - X\u00e1c \u0111\u1ecbnh c\u1ea5p \u0111\u1ed9<\/a><\/li><li><a href=\"#the-10-tolerance-checks-grade-2\">10 b\u01b0\u1edbc ki\u1ec3m tra dung sai (C\u1ea5p \u0111\u1ed9 2)<\/a><ul><li><a href=\"#check-1-span-tolerance-\u03b4s\">Ki\u1ec3m tra 1 \u2014 Dung sai nh\u1ecbp \u0394S<\/a><\/li><li><a href=\"#check-2-rail-straightness-in-horizontal-plane-full-length-b\">Ki\u1ec3m tra 2 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray tr\u00ean m\u1eb7t ph\u1eb3ng ngang (to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i) B<\/a><\/li><li><a href=\"#check-3-rail-straightness-in-horizontal-plane-2000-mm-sample-b\">Ki\u1ec3m tra 3 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray tr\u00ean m\u1eb7t ph\u1eb3ng ngang (M\u1eabu 2000 mm) b<\/a><\/li><li><a href=\"#check-4-rail-straightness-in-vertical-plane-full-length-c\">Ki\u1ec3m tra 4 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray trong m\u1eb7t ph\u1eb3ng th\u1eb3ng \u0111\u1ee9ng (to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i) C<\/a><\/li><li><a href=\"#check-5-rail-straightness-in-vertical-plane-2000-mm-sample-c\">Ki\u1ec3m tra 5 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray trong m\u1eb7t ph\u1eb3ng th\u1eb3ng \u0111\u1ee9ng (M\u1eabu 2000 mm) c<\/a><\/li><li><a href=\"#check-6-height-difference-between-opposite-rails-e\">Ki\u1ec3m tra 6 \u2014 Ch\u00eanh l\u1ec7ch \u0111\u1ed9 cao gi\u1eefa hai \u0111\u01b0\u1eddng ray \u0111\u1ed1i di\u1ec7n E<\/a><\/li><li><a href=\"#check-7-end-stop-buffer-parallelism-f\">Ki\u1ec3m tra 7 \u2014 \u0110i\u1ec3m d\u1eebng cu\u1ed1i \/ Song song h\u00f3a b\u1ed9 \u0111\u1ec7m F<\/a><\/li><li><a href=\"#check-8-rail-joint-gap\">Ki\u1ec3m tra 8 \u2014 Khe h\u1edf m\u1ed1i n\u1ed1i ray<\/a><\/li><li><a href=\"#check-9-rail-inclination-g\">Ki\u1ec3m tra 9 \u2014 \u0110\u1ed9 nghi\u00eang \u0111\u01b0\u1eddng ray G<\/a><\/li><li><a href=\"#check-10-rail-centre-vs-web-centre-deviation-k\">Ki\u1ec3m tra 10 \u2014 \u0110\u1ed9 l\u1ec7ch gi\u1eefa t\u00e2m \u0111\u01b0\u1eddng ray v\u00e0 t\u00e2m m\u1ea1ng K<\/a><\/li><\/ul><\/li><li><a href=\"#recommended-overhead-crane-rail-inspection-workflow\">Quy tr\u00ecnh ki\u1ec3m tra \u0111\u01b0\u1eddng ray c\u1ea7n c\u1ea9u tr\u00ean cao \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/a><\/li><li><a href=\"#consequences-of-out-of-tolerance-conditions\">H\u1eadu qu\u1ea3 c\u1ee7a c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Ray d\u1eabn h\u01b0\u1edbng c\u1ea7n c\u1ea9u tr\u00ean cao l\u00e0 b\u1ed9 ph\u1eadn nh\u1ea1y c\u1ea3m nh\u1ea5t trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng n\u00e2ng h\u1ea1. Sai s\u1ed1 5 mm tr\u00ean \u0111o\u1ea1n ray d\u00e0i 20 m\u00e9t s\u1ebd t\u1ea1o ra t\u1ea3i tr\u1ecdng ngang tu\u1ea7n ho\u00e0n l\u00ean c\u00e1c gi\u00e1 \u0111\u1ee1 \u0111\u1ea7u c\u1ea7n c\u1ea9u m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 bi\u1ec7n ph\u00e1p b\u00f4i tr\u01a1n m\u1eb7t b\u00edch b\u00e1nh xe n\u00e0o c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c. Cho d\u00f9 b\u1ea1n l\u00e0 gi\u00e1m s\u00e1t c\u00f4ng tr\u01b0\u1eddng \u0111ang ki\u1ec3m tra c\u00f4ng vi\u1ec7c c\u1ee7a nh\u00e0 th\u1ea7u x\u00e2y d\u1ef1ng, ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t c\u1ea7n c\u1ea9u \u0111ang chu\u1ea9n b\u1ecb l\u1eafp \u0111\u1eb7t, hay k\u1ef9 s\u01b0 b\u1ea3o tr\u00ec \u0111ang th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3, 10 b\u01b0\u1edbc ki\u1ec3m tra dung sai n\u00e0y l\u00e0 nh\u1eefng g\u00ec c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n. <a href=\"https:\/\/www.kscranegroup.com\/vi\/posts\/a-comprehensive-guide-to-selecting-the-right-crane-rail-standard-for-your-application\/\">ti\u00eau chu\u1ea9n \u0111\u01b0\u1eddng ray c\u1ea7n c\u1ea9u<\/a> th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n GB\/T 10183.1-2018, gi\u1ed1ng h\u1ec7t v\u1edbi ti\u00eau chu\u1ea9n (IDT) ISO 12488-1:2012. Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u01b0\u1ee3c xem x\u00e9t l\u1ea7n cu\u1ed1i v\u00e0o ng\u00e0y 01\/07\/2025 m\u00e0 kh\u00f4ng c\u00f3 c\u1eadp nh\u1eadt n\u00e0o. N\u1ebfu d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n quy \u0111\u1ecbnh dung sai theo ti\u00eau chu\u1ea9n ISO, c\u00e1c gi\u00e1 tr\u1ecb trong h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u1ef1c ti\u1ebfp.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"which-standard-applies-to-overhead-crane-rail-installation-tolerances\">Ti\u00eau chu\u1ea9n n\u00e0o \u00e1p d\u1ee5ng cho dung sai l\u1eafp \u0111\u1eb7t ray c\u1ea7n c\u1ea9u tr\u00ean cao?<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Lo\u1ea1i c\u1ea7n c\u1ea9u<\/th><th>Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng<\/th><th>Tham chi\u1ebfu dung sai<\/th><\/tr><\/thead><tbody><tr><td>C\u1ea7n c\u1ea9u c\u1ea7u (chung)<\/td><td>GB\/T 10183.1-2018<\/td><td>B\u1ea3ng 2, L\u1edbp 2<\/td><\/tr><tr><td>C\u1ea7n c\u1ea9u c\u1ea7u tr\u1ee5c (t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n \u2265 112 m\/ph\u00fat)<\/td><td>GB\/T 10183.1-2018<\/td><td>B\u1ea3ng 2, L\u1edbp 1<\/td><\/tr><tr><td>C\u1ea7n c\u1ea9u gi\u00e0n (chung)<\/td><td>GB\/T 10183.1-2018<\/td><td>B\u1ea3ng 2, L\u1edbp 2<\/td><\/tr><tr><td>C\u1ea7n c\u1ea9u gi\u00e0n \u0111\u00f3ng t\u00e0u<\/td><td>GB\/T 10183.1-2018<\/td><td>B\u1ea3ng 2, C\u1ea5p 2 + B\u1ea3ng 6 (dung sai kh\u1edbp n\u1ed1i)<\/td><\/tr><tr><td>C\u1ea7n c\u1ea9u m\u1ed9t d\u1ea7m \/ c\u1ea7n c\u1ea9u treo<\/td><td>GB\/T 10183.1-2018<\/td><td>Theo ti\u00eau chu\u1ea9n<\/td><\/tr><tr><td>M\u00e1y d\u1ee1 h\u00e0ng t\u00e0u c\u1ea9u<\/td><td>GB\/T 10183.1-2018<\/td><td>B\u1ea3ng 2, 6, 7 \u2014 L\u1edbp 2<\/td><\/tr><tr><td>C\u1ea7n c\u1ea9u c\u1ea7n tr\u1ee5c<\/td><td>GB\/T 10183.4-2010<\/td><td>Dung sai ri\u00eang bi\u1ec7t<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">B\u1ea3ng so s\u00e1nh ti\u00eau chu\u1ea9n c\u1ea7n c\u1ea9u<\/figcaption><\/figure>\n\n\n\n<p><em>M\u1eb7c \u0111\u1ecbnh cho h\u1ea7u h\u1ebft c\u00e1c c\u1ea7n c\u1ea9u c\u1ea7u tr\u1ee5c v\u00e0 c\u1ea7n c\u1ea9u gi\u00e0n: Dung sai c\u1ea5p 2 theo B\u1ea3ng 2.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"overhead-crane-rail-installation-tolerances-grade-determination\">Dung sai l\u1eafp \u0111\u1eb7t \u0111\u01b0\u1eddng ray c\u1ea7n c\u1ea9u tr\u00ean cao - X\u00e1c \u0111\u1ecbnh c\u1ea5p \u0111\u1ed9<\/h2>\n\n\n\n<p>C\u00e1c c\u1ea5p \u0111\u1ed9 dung sai l\u1eafp \u0111\u1eb7t ray c\u1ea7n c\u1ea9u tr\u00ean cao \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean t\u1ed5ng qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n trong su\u1ed1t v\u00f2ng \u0111\u1eddi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea7n c\u1ea9u. Tuy nhi\u00ean, \u0111\u1ed9 nh\u1ea1y c\u1ee7a h\u1ec7 th\u1ed1ng \u2014 m\u1ee9c \u0111\u1ed9 ph\u1ea3n \u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ea7n c\u1ea9u \u0111\u1ed1i v\u1edbi t\u1ea3i tr\u1ecdng ph\u00e1t sinh do sai l\u1ec7ch dung sai \u2014 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u n\u00e2ng c\u1ea5p l\u00ean m\u1ed9t c\u1ea5p. C\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 \u0111\u1ed9 nh\u1ea1y cao bao g\u1ed3m c\u1ea7n c\u1ea9u kh\u1ea9u \u0111\u1ed9 l\u1edbn v\u1edbi chi\u1ec1u d\u00e0i c\u01a1 s\u1edf c\u1ee7a gi\u00e1 \u0111\u1ee1 cu\u1ed1i t\u1ed1i thi\u1ec3u, ho\u1eb7c c\u1ea7n c\u1ea9u x\u1eed l\u00fd t\u1ea3i tr\u1ecdng \u0111\u01b0\u1ee3c \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1749\" height=\"899\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11839\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-Crane-Rail-Installation-Tolerances.png 1749w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-Crane-Rail-Installation-Tolerances-1536x790.png 1536w\" sizes=\"(max-width: 1749px) 100vw, 1749px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>M\u1ee9c \u0111\u1ed9 dung sai<\/th><th>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th><\/tr><\/thead><tbody><tr><td>L\u1edbp 1<\/td><td>C\u1ea7n c\u1ea9u t\u1ed1c \u0111\u1ed9 cao (\u2265112 m\/ph\u00fat), \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c, tu\u1ed5i th\u1ecd cao.<\/td><\/tr><tr><td>L\u1edbp 2<\/td><td>C\u1ea7n c\u1ea9u c\u1ea7u tr\u1ee5c v\u00e0 c\u1ea7n c\u1ea9u gi\u00e0n ti\u00eau chu\u1ea9n (ph\u1ed5 bi\u1ebfn nh\u1ea5t)<\/td><\/tr><tr><td>L\u1edbp 3<\/td><td>C\u1ea7n c\u1ea9u t\u1ed1c \u0111\u1ed9 th\u1ea5p, hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng th\u1ea5p<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">B\u1ea3ng \u1ee9ng d\u1ee5ng dung sai c\u1ea5p \u0111\u1ed9 l\u1eafp \u0111\u1eb7t ray c\u1ea7n c\u1ea9u tr\u00ean cao<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-10-tolerance-checks-grade-2\">10 b\u01b0\u1edbc ki\u1ec3m tra dung sai (C\u1ea5p \u0111\u1ed9 2)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-1-span-tolerance-\u03b4s\">Ki\u1ec3m tra 1 \u2014 Dung sai nh\u1ecbp \u0394S<\/h3>\n\n\n\n<p>Kho\u1ea3ng c\u00e1ch gi\u1eefa t\u00e2m c\u00e1c \u0111\u01b0\u1eddng ray t\u1ea1i b\u1ea5t k\u1ef3 \u0111i\u1ec3m n\u00e0o d\u1ecdc theo \u0111\u01b0\u1eddng b\u0103ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Kho\u1ea3ng c\u00e1ch (S)<\/th><th>M\u1ee9c \u0111\u1ed9 dung sai c\u1ea5p 2<\/th><th>M\u1ee9c \u0111\u1ed9 dung sai c\u1ea5p 1<\/th><\/tr><\/thead><tbody><tr><td>S \u2264 16 m<\/td><td>\u0394S = \u00b15 mm<\/td><td>\u0394S = \u00b13 mm<\/td><\/tr><tr><td>S &gt; 16 m<\/td><td>\u0394S = \u00b1[5 + 0,25 \u00d7 (S \u2212 16)] mm, t\u1ed1i \u0111a \u00b115 mm<\/td><td>sai s\u1ed1 t\u1ed1i \u0111a \u00b110 mm<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">B\u1ea3ng so s\u00e1nh dung sai nh\u1ecbp<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"901\" height=\"372\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11840\"\/><\/figure>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong> C\u1ea7n c\u1ea9u c\u00f3 kh\u1ea9u \u0111\u1ed9 28 m: \u0394S = \u00b1[5 + 0,25 \u00d7 (28 \u2212 16)] = \u00b1[5 + 0,25 \u00d7 12] = <strong>\u00b18 mm<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-2-rail-straightness-in-horizontal-plane-full-length-b\">Ki\u1ec3m tra 2 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray tr\u00ean m\u1eb7t ph\u1eb3ng ngang (to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i) B<\/h3>\n\n\n\n<p><strong>B = \u00b110 mm<\/strong> T\u1ea1i b\u1ea5t k\u1ef3 \u0111i\u1ec3m n\u00e0o d\u1ecdc theo to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng ray.<\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 \u0111\u1ed9 l\u1ec7ch ngang c\u1ee7a \u0111\u01b0\u1eddng t\u00e2m \u0111\u1ea7u ray so v\u1edbi \u0111\u01b0\u1eddng t\u00e2m l\u00fd thuy\u1ebft. \u0110o t\u1eeb m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y c\u0103ng l\u00e0m chu\u1ea9n \u1edf \u0111\u1ed9 cao \u0111\u1ea7u ray.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-3-rail-straightness-in-horizontal-plane-2000-mm-sample-b\">Ki\u1ec3m tra 3 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray tr\u00ean m\u1eb7t ph\u1eb3ng ngang (M\u1eabu 2000 mm) b<\/h3>\n\n\n\n<p><strong>b = 1 mm<\/strong> tr\u00ean b\u1ea5t k\u1ef3 chi\u1ec1u d\u00e0i l\u1ea5y m\u1eabu n\u00e0o 2000 mm.<\/p>\n\n\n\n<p>\u0110i\u1ec1u n\u00e0y gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m u\u1ed1n c\u1ee5c b\u1ed9 \u2014 lo\u1ea1i \u0111i\u1ec3m u\u1ed1n khi\u1ebfn m\u1ed9t b\u00e1nh xe \u0111\u1ed9t ng\u1ed9t b\u1ecb tr\u01b0\u1ee3t ngang. M\u1ed9t th\u01b0\u1edbc th\u1eb3ng 2000 mm v\u00e0 th\u01b0\u1edbc \u0111o khe h\u1edf s\u1ebd cung c\u1ea5p m\u1ed9t b\u01b0\u1edbc ki\u1ec3m tra t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"327\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/3Overhead-Crane-Rail-Installation-Tolerances.jpg\" alt=\"\" class=\"wp-image-11841\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-4-rail-straightness-in-vertical-plane-full-length-c\">Ki\u1ec3m tra 4 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray trong m\u1eb7t ph\u1eb3ng th\u1eb3ng \u0111\u1ee9ng (to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i) C<\/h3>\n\n\n\n<p><strong>C = \u00b110 mm<\/strong> T\u1ea1i b\u1ea5t k\u1ef3 \u0111i\u1ec3m n\u00e0o d\u1ecdc theo to\u00e0n b\u1ed9 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng ray.<\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 \u0111\u1ed9 l\u1ec7ch th\u1eb3ng \u0111\u1ee9ng c\u1ee7a \u0111\u1ea7u ray so v\u1edbi \u0111\u01b0\u1eddng cao \u0111\u1ed9 l\u00fd thuy\u1ebft. S\u1eed d\u1ee5ng th\u01b0\u1edbc th\u1ee7y ho\u1eb7c m\u00e1y \u0111o laser cho c\u00e1c \u0111\u01b0\u1eddng b\u0103ng d\u00e0i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-5-rail-straightness-in-vertical-plane-2000-mm-sample-c\">Ki\u1ec3m tra 5 \u2014 \u0110\u1ed9 th\u1eb3ng c\u1ee7a ray trong m\u1eb7t ph\u1eb3ng th\u1eb3ng \u0111\u1ee9ng (M\u1eabu 2000 mm) c<\/h3>\n\n\n\n<p><strong>c = 2 mm<\/strong> tr\u00ean b\u1ea5t k\u1ef3 chi\u1ec1u d\u00e0i l\u1ea5y m\u1eabu n\u00e0o 2000 mm.<\/p>\n\n\n\n<p>Nh\u1eefng ch\u1ed7 tr\u0169ng ho\u1eb7c g\u1ed3 gh\u1ec1 c\u1ee5c b\u1ed9 \u2014 lo\u1ea1i m\u00e0 b\u1ea1n c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c khi c\u1ea7n c\u1ea9u l\u0103n qua m\u1ed1i n\u1ed1i \u0111\u01b0\u1eddng ray b\u1ecb l\u00fan. M\u1ed9t th\u01b0\u1edbc th\u1eb3ng ch\u00ednh x\u00e1c v\u00e0 th\u01b0\u1edbc \u0111o \u0111\u1ed9 s\u00e2u l\u00e0 \u0111\u1ee7 \u0111\u1ec3 ki\u1ec3m tra \u0111i\u1ec1u n\u00e0y.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"897\" height=\"269\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/4Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11842\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-6-height-difference-between-opposite-rails-e\">Ki\u1ec3m tra 6 \u2014 Ch\u00eanh l\u1ec7ch \u0111\u1ed9 cao gi\u1eefa hai \u0111\u01b0\u1eddng ray \u0111\u1ed1i di\u1ec7n E<\/h3>\n\n\n\n<p><strong>E = \u00b11,0 \u00d7 S mm<\/strong>trong \u0111\u00f3 S l\u00e0 nh\u1ecbp t\u00ednh b\u1eb1ng m\u00e9t, <strong>sai s\u1ed1 t\u1ed1i \u0111a \u00b110 mm<\/strong>(C\u1ea5p \u0111\u1ed9 1: E = \u00b10,5 \u00d7 S mm, t\u1ed1i \u0111a \u00b15 mm.)**<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"884\" height=\"339\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/5Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11843\"\/><\/figure>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong> Nh\u1ecbp 20 m \u2192 E = \u00b11,0 \u00d7 20 = \u00b120 mm, gi\u1edbi h\u1ea1n \u1edf <strong>\u00b110 mm<\/strong>.<\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 ph\u00e9p \u0111o ch\u00eanh l\u1ec7ch \u0111\u1ed9 cao gi\u1eefa c\u00e1c thanh ray. S\u1ef1 ch\u00eanh l\u1ec7ch \u0111\u1ed9 cao gi\u1eefa c\u00e1c thanh ray l\u00e0m nghi\u00eang to\u00e0n b\u1ed9 c\u1ea7n c\u1ea9u v\u00e0 t\u1ea1o ra l\u1ef1c ngang t\u1eeb t\u1ea3i tr\u1ecdng \u0111\u01b0\u1ee3c n\u00e2ng l\u00ean. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng kh\u00e2u ki\u1ec3m tra th\u01b0\u1eddng b\u1ecb b\u1ecf qua nh\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-7-end-stop-buffer-parallelism-f\">Ki\u1ec3m tra 7 \u2014 \u0110i\u1ec3m d\u1eebng cu\u1ed1i \/ Song song h\u00f3a b\u1ed9 \u0111\u1ec7m F<\/h3>\n\n\n\n<p><strong>F = \u00b11,0 \u00d7 S mm<\/strong>trong \u0111\u00f3 S l\u00e0 nh\u1ecbp t\u00ednh b\u1eb1ng m\u00e9t, <strong>sai s\u1ed1 t\u1ed1i \u0111a \u00b110 mm<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"889\" height=\"331\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/6Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11844\"\/><\/figure>\n\n\n\n<p>C\u1ea3 hai \u0111i\u1ec3m d\u1eebng cu\u1ed1i ph\u1ea3i song song v\u1edbi nhau v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi tr\u1ee5c d\u1ecdc c\u1ee7a ray. N\u1ebfu kh\u00f4ng, m\u1ed9t b\u00ean c\u1ee7a c\u1ea7n c\u1ea9u s\u1ebd va ch\u1ea1m tr\u01b0\u1edbc b\u00ean kia, t\u1eadp trung l\u1ef1c va ch\u1ea1m v\u00e0o m\u1ed9t \u0111\u1ea7u toa xe thay v\u00ec ph\u00e2n b\u1ed5 \u0111\u1ec1u cho c\u1ea3 hai.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-8-rail-joint-gap\">Ki\u1ec3m tra 8 \u2014 Khe h\u1edf m\u1ed1i n\u1ed1i ray<\/h3>\n\n\n\n<p>Khe h\u1edf t\u1ea1i c\u00e1c m\u1ed1i n\u1ed1i ray ph\u1ea3i \u0111\u1ee7 \u0111\u1ec3 ch\u1ee9a s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t. \u0110\u1ed1i v\u1edbi c\u00e1c m\u1ed1i n\u1ed1i h\u00e0n (\u01b0u ti\u00ean s\u1eed d\u1ee5ng cho \u0111\u01b0\u1eddng ray d\u00e0i v\u00e0 c\u1ea7n c\u1ea9u gi\u00e0n \u0111\u00f3ng t\u00e0u), m\u1ed1i n\u1ed1i ph\u1ea3i \u0111\u01b0\u1ee3c m\u00e0i ph\u1eb3ng sau khi h\u00e0n. B\u1ea3ng 6 c\u1ee7a ti\u00eau chu\u1ea9n GB\/T 10183.1 cung c\u1ea5p c\u00e1c dung sai c\u1ee5 th\u1ec3 cho vi\u1ec7c x\u00e2y d\u1ef1ng m\u1ed1i n\u1ed1i.<\/p>\n\n\n\n<p>Ngay c\u1ea3 \u0111\u1ed9 ch\u00eanh l\u1ec7ch 0,5 mm theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng t\u1ea1i m\u1ed1i n\u1ed1i ray c\u0169ng s\u1ebd g\u00e2y ra ti\u1ebfng \u0111\u1ed9ng l\u1edbn v\u00e0 l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 m\u00e0i m\u00f2n b\u00e1nh xe.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-9-rail-inclination-g\">Ki\u1ec3m tra 9 \u2014 \u0110\u1ed9 nghi\u00eang \u0111\u01b0\u1eddng ray G<\/h3>\n\n\n\n<p><strong>G = 6\u2030<\/strong> (6 ph\u1ea7n ngh\u00ecn).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"840\" height=\"294\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/7Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11845\"\/><\/figure>\n\n\n\n<p>M\u1ed9t s\u1ed1 lo\u1ea1i ray (nh\u01b0 d\u00f2ng QU) c\u00f3 b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac nghi\u00eang. Dung sai \u0111\u1ed9 nghi\u00eang ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra so v\u1edbi h\u00ecnh d\u1ea1ng r\u00e3nh b\u00e1nh xe \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u00ecnh h\u1ecdc ti\u1ebfp x\u00fac ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-10-rail-centre-vs-web-centre-deviation-k\">Ki\u1ec3m tra 10 \u2014 \u0110\u1ed9 l\u1ec7ch gi\u1eefa t\u00e2m \u0111\u01b0\u1eddng ray v\u00e0 t\u00e2m m\u1ea1ng K<\/h3>\n\n\n\n<p><strong>K = \u00b10,5 \u00d7 t<em>ph\u00fat<\/em><\/strong><em>, trong \u0111\u00f3 t<\/em>min l\u00e0 \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u c\u1ee7a m\u00e0ng v\u1ea3i t\u00ednh b\u1eb1ng mm.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"863\" height=\"346\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/8Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11846\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"899\" height=\"356\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/9Overhead-Crane-Rail-Installation-Tolerances.png\" alt=\"\" class=\"wp-image-11847\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"recommended-overhead-crane-rail-inspection-workflow\">Quy tr\u00ecnh ki\u1ec3m tra \u0111\u01b0\u1eddng ray c\u1ea7n c\u1ea9u tr\u00ean cao \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/h2>\n\n\n\n<p>T\u1ea1i c\u00f4ng tr\u01b0\u1eddng \u0111\u1ec3 nghi\u1ec7m thu \u0111\u01b0\u1eddng ray c\u1ea7n c\u1ea9u tr\u00ean cao, h\u00e3y th\u1ef1c hi\u1ec7n theo tr\u00ecnh t\u1ef1 sau:<\/p>\n\n\n\n<ol>\n<li><strong>Ki\u1ec3m tra ph\u1ea1m vi tr\u01b0\u1edbc<\/strong> \u2014 N\u1ebfu kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c v\u1ea1ch \u0111o kh\u00f4ng ch\u00ednh x\u00e1c, m\u1ecdi th\u1ee9 kh\u00e1c \u0111\u1ec1u tr\u1edf n\u00ean v\u00f4 ngh\u0129a. H\u00e3y s\u1eed d\u1ee5ng m\u00e1y \u0111o kho\u1ea3ng c\u00e1ch laser \u0111\u00e3 hi\u1ec7u chu\u1ea9n, \u0111o \u1edf kho\u1ea3ng c\u00e1ch 2-3 m\u00e9t d\u1ecdc theo to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng b\u0103ng.<\/li>\n\n\n\n<li><strong>C\u1ea5p \u0111\u1ed9 ch\u00e9o (E) th\u1ee9 hai<\/strong> \u2014 M\u00e1y c\u00e2n b\u1eb1ng laser xoay ho\u1eb7c m\u00e1y c\u00e2n b\u1eb1ng quang h\u1ecdc. \u0110\u00e1nh d\u1ea5u m\u1ed9t thanh ray l\u00e0m \u0111\u1ed9 cao tham chi\u1ebfu v\u00e0 \u0111o \u0111\u1ed9 cao c\u1ee7a thanh ray c\u00f2n l\u1ea1i so v\u1edbi thanh ray \u0111\u00f3.<\/li>\n\n\n\n<li><strong>\u0110\u1ed9 th\u1eb3ng ngang (B, b)<\/strong> \u2014 D\u00e2y \u0111\u00e0n piano c\u0103ng \u1edf \u0111\u1ed9 cao ngang \u0111\u1ea7u ray, \u0111o \u0111\u1ed9 l\u1ec7ch b\u1eb1ng th\u01b0\u1edbc th\u00e9p.<\/li>\n\n\n\n<li><strong>\u0110\u1ed9 th\u1eb3ng \u0111\u1ee9ng (C, c)<\/strong> \u2014 D\u1ee5ng c\u1ee5 \u0111o \u0111\u1ed9 ph\u1eb3ng ho\u1eb7c m\u00e1y \u0111o laser. \u0110\u1ed1i v\u1edbi vi\u1ec7c ki\u1ec3m tra c\u1ee5c b\u1ed9 \u1edf kho\u1ea3ng c\u00e1ch 2000 mm, m\u1ed9t th\u01b0\u1edbc th\u1eb3ng ch\u00ednh x\u00e1c l\u00e0 \u0111\u1ee7.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra chung<\/strong> \u2014 Ki\u1ec3m tra t\u1eebng m\u1ed1i n\u1ed1i. Xem c\u00f3 b\u1eadc thang v\u00e0 khe h\u1edf th\u1eb3ng \u0111\u1ee9ng kh\u00f4ng.<\/li>\n\n\n\n<li><strong>\u0110i\u1ec3m d\u1eebng cu\u1ed1i (F)<\/strong> \u2014 Ki\u1ec3m tra \u0111\u1ed9 vu\u00f4ng g\u00f3c v\u1edbi tr\u1ee5c ray. C\u1ea3 hai m\u1eb7t ph\u1ea3i ti\u1ebfp x\u00fac \u0111\u1ed3ng th\u1eddi.<\/li>\n\n\n\n<li><strong>Ghi ch\u00e9p l\u1ea1i m\u1ecdi th\u1ee9<\/strong> \u2014 H\u00e3y ch\u1ee5p \u1ea3nh m\u1ecdi ph\u00e9p \u0111o, hi\u1ec3n th\u1ecb r\u00f5 ch\u1ec9 s\u1ed1 \u0111o. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 th\u1ee7 t\u1ee5c r\u01b0\u1eddm r\u00e0; \u0111\u00e2y l\u00e0 bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 b\u1ea1n khi ai \u0111\u00f3 sau n\u00e0y cho r\u1eb1ng \u0111\u01b0\u1eddng ray \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch v\u00e0 c\u1ea7n c\u1ea9u b\u1ecb l\u1ed7i.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"consequences-of-out-of-tolerance-conditions\">H\u1eadu qu\u1ea3 c\u1ee7a c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>T\u00ecnh tr\u1ea1ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p<\/th><th>Tri\u1ec7u ch\u1ee9ng<\/th><th>K\u1ebft qu\u1ea3<\/th><\/tr><\/thead><tbody><tr><td>Kho\u1ea3ng c\u00e1ch qu\u00e1 r\u1ed9ng\/qu\u00e1 h\u1eb9p<\/td><td>V\u00e0nh b\u00e1nh xe li\u00ean t\u1ee5c c\u1ecd x\u00e1t v\u00e0o m\u1ed9t \u0111\u01b0\u1eddng ray.<\/td><td>Hi\u1ec7n t\u01b0\u1ee3ng m\u00e0i m\u00f2n m\u1eb7t b\u00edch t\u0103ng nhanh, l\u1ef1c c\u1ea3n khi di chuy\u1ec3n t\u0103ng l\u00ean.<\/td><\/tr><tr><td>\u0110\u1ed9 cong ngang (b v\u01b0\u1ee3t qu\u00e1)<\/td><td>Ti\u1ebfng c\u1ecd r\u1eeda c\u1ee5c b\u1ed9, ti\u1ebfng r\u00edt c\u00f3 th\u1ec3 nghe th\u1ea5y.<\/td><td>C\u00e1c v\u1ebft m\u00f2n kh\u00f4ng \u0111\u1ec1u tr\u00ean b\u00e1nh xe, bong tr\u00f3c \u0111\u1ea7u ray<\/td><\/tr><tr><td>L\u1ed7i \u0111a c\u1ea5p (E v\u01b0\u1ee3t qu\u00e1)<\/td><td>C\u1ea7n c\u1ea9u b\u1ecb l\u1ec7ch sang b\u00ean th\u1ea5p khi nh\u1ea3 phanh.<\/td><td>T\u1ea3i tr\u1ecdng b\u00e1nh xe kh\u00f4ng \u0111\u1ec1u, xu h\u01b0\u1edbng l\u1ec7ch h\u01b0\u1edbng<\/td><\/tr><tr><td>B\u01b0\u1edbc kh\u1edbp &gt; 0,5 mm<\/td><td>Ti\u1ebfng va \u0111\u1eadp ph\u00e1t ra \u1edf m\u1ed7i kh\u1edbp n\u1ed1i.<\/td><td>M\u1ecfi \u1ed5 tr\u1ee5c b\u00e1nh xe, rung \u0111\u1ed9ng k\u1ebft c\u1ea5u<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">B\u1ea3ng so s\u00e1nh h\u1eadu qu\u1ea3 c\u1ee7a c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p<\/figcaption><\/figure>\n\n\n\n<p><strong>C\u00e1c ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c tham chi\u1ebfu (<a href=\"https:\/\/openstd.samr.gov.cn\/bzgk\/std\/std_list?p.p1=0&amp;p.p90=circulation_date&amp;p.p91=desc&amp;p.p2=%E8%B5%B7%E9%87%8D%E6%9C%BA\" target=\"_blank\" rel=\"noopener\">Tra c\u1ee9u ti\u00eau chu\u1ea9n c\u1ea7n c\u1ea9u Trung Qu\u1ed1c<\/a>):<\/strong><\/p>\n\n\n\n<ul>\n<li>GB\/T 10183.1-2018 \u2014 C\u1ea7n c\u1ea9u \u2014 Dung sai cho b\u00e1nh xe v\u00e0 ray d\u1eabn h\u01b0\u1edbng \u2014 Ph\u1ea7n 1: T\u1ed5ng qu\u00e1t (IDT ISO 12488-1:2012)<\/li>\n\n\n\n<li>ISO 12488-1:2012 \u2014 C\u1ea7n c\u1ea9u \u2014 Dung sai cho b\u00e1nh xe v\u00e0 \u0111\u01b0\u1eddng ray di chuy\u1ec3n v\u00e0 quay \u2014 Ph\u1ea7n 1: T\u1ed5ng quan<\/li>\n\n\n\n<li>Ti\u00eau chu\u1ea9n GB\/T 14405-2011 \u2014 C\u1ea7n c\u1ea9u c\u1ea7u tr\u1ee5c th\u00f4ng d\u1ee5ng (quy \u0111\u1ecbnh dung sai \u0111\u01b0\u1eddng ray c\u1ea5p 2)<\/li>\n\n\n\n<li>GB\/T 14406-2011 \u2014 C\u1ea7n c\u1ea9u gi\u00e0n th\u00f4ng d\u1ee5ng (quy \u0111\u1ecbnh dung sai \u0111\u01b0\u1eddng ray c\u1ea5p 2)<\/li>\n\n\n\n<li>Ti\u00eau chu\u1ea9n GB\/T 27997-2011 \u2014 C\u1ea7n c\u1ea9u gi\u00e0n \u0111\u00f3ng t\u00e0u (Lo\u1ea1i 2 tr\u1edf l\u00ean, \u01b0u ti\u00ean m\u1ed1i h\u00e0n)<\/li>\n\n\n\n<li>GB\/T 26475-2021 \u2014 Thi\u1ebft b\u1ecb d\u1ee1 h\u00e0ng cho t\u00e0u g\u1eafp<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"An overhead crane runway rail is the most unforgiving component in the entire lifting system. A 5 mm span error across 20 metres creates a cyclic side load on the end carriages that no amount of wheel","protected":false},"featured_media":11866,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[189],"posts_tag":[801,793,799,798,121,802,797,800,803],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/xmxposts\/11848"}],"collection":[{"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":2,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/xmxposts\/11848\/revisions"}],"predecessor-version":[{"id":11867,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/xmxposts\/11848\/revisions\/11867"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/media\/11866"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/media?parent=11848"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/posts_category?post=11848"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/posts_tag?post=11848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}