{"id":17452,"date":"2026-10-21T02:02:19","date_gmt":"2026-10-21T02:02:19","guid":{"rendered":"https:\/\/www.dgcrane.com\/?post_type=posts&#038;p=17452"},"modified":"2026-10-21T02:02:23","modified_gmt":"2026-10-21T02:02:23","slug":"overhead-crane-wire-rope-failure-analysis","status":"publish","type":"posts","link":"https:\/\/www.dgcrane.com\/vi\/posts\/overhead-crane-wire-rope-failure-analysis\/","title":{"rendered":"Ph\u00e2n t\u00edch s\u1ef1 c\u1ed1 h\u1ecfng h\u00f3c d\u00e2y c\u00e1p c\u1ea7n c\u1ea9u tr\u00ean cao v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng."},"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=\"#1-overhead-crane-wire-rope-strength-and-elongation\">1. \u0110\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 gi\u00e3n c\u1ee7a d\u00e2y c\u00e1p th\u00e9p c\u1ea7n c\u1ea9u tr\u00ean cao<\/a><\/li><li><a href=\"#2-overhead-crane-sheaves\">2. R\u00f2ng r\u1ecdc c\u1ea7n c\u1ea9u tr\u00ean cao<\/a><\/li><li><a href=\"#3-overhead-crane-sheave-rope-grooves\">3. R\u00e3nh d\u00e2y c\u00e1p r\u00f2ng r\u1ecdc c\u1ea7n c\u1ea9u tr\u00ean cao<\/a><\/li><li><a href=\"#4-overhead-crane-wire-rope-pressure\">4. \u00c1p su\u1ea5t c\u00e1p th\u00e9p c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao<\/a><\/li><li><a href=\"#5-overhead-crane-drums\">5. Tang tr\u1ed1ng c\u1ea9u tr\u1ee5c tr\u00ean cao<\/a><\/li><li><a href=\"#6-other-failure-factors\">6. C\u00e1c y\u1ebfu t\u1ed1 g\u00e2y h\u1ecfng h\u00f3c kh\u00e1c<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>D\u00e2y c\u00e1p th\u00e9p l\u00e0 m\u1ed9t trong nh\u1eefng b\u1ed9 ph\u1eadn n\u00e2ng h\u1ea1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i cao, \u0111\u1ed9 linh ho\u1ea1t t\u1ed1t, chuy\u1ec3n \u0111\u1ed9ng tr\u01a1n tru v\u00e0 ti\u1ebfng \u1ed3n th\u1ea5p. H\u1ea7u h\u1ebft c\u00e1c c\u1ea7n c\u1ea9u tr\u00ean cao \u0111\u1ec1u s\u1eed d\u1ee5ng d\u00e2y c\u00e1p th\u00e9p \u0111\u1ec3 n\u00e2ng h\u1ea1 h\u00e0ng h\u00f3a. N\u1ebfu d\u00e2y c\u00e1p th\u00e9p \u0111\u1ed9t ng\u1ed9t b\u1ecb \u0111\u1ee9t do h\u01b0 h\u1ecfng, h\u1eadu qu\u1ea3 c\u00f3 th\u1ec3 r\u1ea5t nghi\u00eam tr\u1ecdng. Do \u0111\u00f3, ph\u00e2n t\u00edch h\u01b0 h\u1ecfng c\u1ee7a d\u00e2y c\u00e1p th\u00e9p r\u1ea5t quan tr\u1ecdng v\u00ec c\u1ea3 l\u00fd do an to\u00e0n v\u00e0 kinh t\u1ebf. B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c nhau g\u00e2y ra h\u01b0 h\u1ecfng d\u00e2y c\u00e1p th\u00e9p c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao nh\u1eb1m gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a n\u00f3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/Overhead-Crane-Wire-Rope-Failure-Analysis-feature-image.png\" alt=\"\" class=\"wp-image-17460\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-overhead-crane-wire-rope-strength-and-elongation\">1. \u0110\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 gi\u00e3n c\u1ee7a d\u00e2y c\u00e1p th\u00e9p c\u1ea7n c\u1ea9u tr\u00ean cao<\/h2>\n\n\n\n<p>Theo thi\u1ebft k\u1ebf, c\u01b0\u1eddng \u0111\u1ed9 ch\u1ecbu l\u1ef1c t\u1ed1i \u0111a c\u1ee7a d\u00e2y c\u00e1p th\u00e9p th\u1ea5p h\u01a1n c\u01b0\u1eddng \u0111\u1ed9 ch\u1ecbu l\u1ef1c t\u1ed5ng c\u1ed9ng c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c s\u1ee3i d\u00e2y. \u0110i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn c\u1ea5u tr\u00fac d\u00e2y c\u00e1p v\u00e0 c\u1ea5p \u0111\u1ed9 b\u1ec1n c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c s\u1ee3i d\u00e2y trong d\u00e2y. Khi thi\u1ebft k\u1ebf d\u00e2y c\u00e1p th\u00e9p, c\u1ea7n xem x\u00e9t t\u1ea5t c\u1ea3 c\u00e1c y\u1ebfu t\u1ed1 t\u1ea3i tr\u1ecdng, bao g\u1ed3m t\u1ea3i tr\u1ecdng b\u1ed5 sung, gia t\u1ed1c, gi\u1ea3m t\u1ed1c, t\u1ed1c \u0111\u1ed9 d\u00e2y v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c. S\u1ed1 l\u01b0\u1ee3ng, b\u1ed1 tr\u00ed c\u1ea5u tr\u00fac v\u00e0 ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t c\u1ee7a r\u00f2ng r\u1ecdc v\u00e0 tang tr\u1ed1ng c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t, c\u00f9ng v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n g\u00e2y \u0103n m\u00f2n v\u00e0 m\u00e0i m\u00f2n v\u00e0 chi\u1ec1u d\u00e0i d\u00e2y c\u00e1p.<\/p>\n\n\n\n<p>C\u00e1c s\u1ee3i d\u00e2y trong c\u00e1p th\u00e9p th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u00e9p k\u1ebft c\u1ea5u cacbon ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi h\u00e0m l\u01b0\u1ee3ng cacbon t\u1eeb 0,5% \u0111\u1ebfn 0,8%. M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i c\u1ee7a c\u00e1p th\u00e9p x\u1ea5p x\u1ec9 1,6\u00d710\u2075 N\/mm\u00b2. M\u00f4 \u0111un n\u00e0y \u0111o l\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 gi\u00e3n d\u00e0i c\u1ee7a c\u00e1c s\u1ee3i d\u00e2y d\u01b0\u1edbi t\u1ea3i tr\u1ecdng.<\/p>\n\n\n\n<p>Khi d\u00e2y c\u00e1p th\u00e9p ch\u1ecbu t\u1ea3i, c\u00e1c s\u1ee3i d\u00e2y s\u1ebd di chuy\u1ec3n t\u01b0\u01a1ng \u0111\u1ed1i v\u1edbi nhau khi ch\u00fang \u0111i\u1ec1u ch\u1ec9nh v\u1ecb tr\u00ed \u0111\u1ec3 \u0111\u1ea1t tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1ea3i tr\u1ecdng t\u00e1c d\u1ee5ng. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra hai lo\u1ea1i gi\u00e3n d\u00e0i. Khi d\u00e2y c\u00e1p th\u00e9p ch\u1ecbu t\u1ea3i l\u1ea7n \u0111\u1ea7u ti\u00ean, c\u00e1c s\u1ee3i d\u00e2y s\u1ebd s\u1eafp x\u1ebfp l\u1ea1i m\u1ed9t ch\u00fat v\u00e0 t\u1ea1o ra \u0111\u1ed9 gi\u00e3n d\u00e0i v\u0129nh vi\u1ec5n, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i c\u1ea5u tr\u00fac. \u0110\u1ed3ng th\u1eddi, \u0111\u1ed9 gi\u00e3n d\u00e0i c\u00f3 th\u1ec3 ph\u1ee5c h\u1ed3i, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1ed9 gi\u00e3n d\u00e0i \u0111\u00e0n h\u1ed3i, c\u0169ng x\u1ea3y ra. \u0110\u1ed9 gi\u00e3n d\u00e0i c\u1ea5u tr\u00fac ph\u1ee5 thu\u1ed9c \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh v\u00e0o \u0111\u1ed9 l\u1edbn c\u1ee7a t\u1ea3i tr\u1ecdng t\u00e1c d\u1ee5ng.<\/p>\n\n\n\n<p>\u0110\u01b0\u1eddng k\u00ednh d\u00e2y c\u00e0ng nh\u1ecf th\u00ec m\u00f4men u\u1ed1n c\u1ea7n thi\u1ebft \u0111\u1ec3 u\u1ed1n cong ch\u00fang c\u00e0ng nh\u1ecf v\u00e0 \u0111\u1ed9 d\u1ebbo c\u1ee7a d\u00e2y c\u00e0ng l\u1edbn. D\u00e2y c\u00e1p th\u00e9p c\u00f3 nhi\u1ec1u d\u00e2y h\u01a1n v\u00e0 d\u00e2y c\u00e1p th\u00e9p l\u00f5i s\u1ee3i th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 d\u1ebbo t\u1ed1t h\u01a1n. D\u00e2y c\u00e1p th\u00e9p ho\u00e0n to\u00e0n b\u1eb1ng kim lo\u1ea1i \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng \u00edt d\u00e2y h\u01a1n c\u00f3 \u0111\u1ed9 d\u1ebbo k\u00e9m h\u01a1n, trong khi lo\u1ea1i tr\u01b0\u1edbc th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 gi\u00e3n d\u00e0i l\u1edbn h\u01a1n lo\u1ea1i sau. \u0110\u1ed9 d\u1ebbo l\u1edbn h\u01a1n gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng \u0111\u1ee9t g\u00e3y.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-overhead-crane-sheaves\">2. R\u00f2ng r\u1ecdc c\u1ea7n c\u1ea9u tr\u00ean cao<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1242\" height=\"828\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/03\/Forged-sheaves-01.jpg\" alt=\"\" class=\"wp-image-16621\"><\/figure>\n\n\n\n<p>K\u00edch th\u01b0\u1edbc r\u00f2ng r\u1ecdc ch\u00ednh th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng \u0111\u01b0\u1eddng k\u00ednh r\u00f2ng r\u1ecdc \u1edf \u0111\u00e1y r\u00e3nh c\u00e1p c\u1ed9ng v\u1edbi \u0111\u01b0\u1eddng k\u00ednh d\u00e2y c\u00e1p th\u00e9p l\u00e0m \u0111\u01b0\u1eddng k\u00ednh cu\u1ed9n t\u1ed1i thi\u1ec3u. Khi <a href=\"https:\/\/www.dgcrane.com\/vi\/crane-sheaves\/\">r\u00f2ng r\u1ecdc c\u1ea7n c\u1ea9u<\/a> Khi \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a r\u00f2ng r\u1ecdc nh\u1ecf \u0111i, \u1ee9ng su\u1ea5t do u\u1ed1n cong v\u00e0 \u00e1p l\u1ef1c ti\u1ebfp x\u00fac gi\u1eefa d\u00e2y c\u00e1p v\u00e0 r\u00f2ng r\u1ecdc t\u0103ng l\u00ean. \u1ee8ng su\u1ea5t u\u1ed1n cong c\u00e0ng cao, c\u00e1c s\u1ee3i d\u00e2y trong r\u00f2ng r\u1ecdc c\u00e0ng nhanh b\u1ecb m\u1ecfi. \u00c1p l\u1ef1c ti\u1ebfp x\u00fac t\u0103ng l\u00ean c\u0169ng l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 h\u01b0 h\u1ecfng c\u1ee7a d\u00e2y c\u00e1p v\u00e0 m\u00e0i m\u00f2n r\u00f2ng r\u1ecdc.<\/p>\n\n\n\n<p>Khi \u0111\u01b0\u1eddng k\u00ednh r\u00f2ng r\u1ecdc l\u1edbn h\u01a1n, \u00e1p l\u1ef1c gi\u1eefa d\u00e2y c\u00e1p v\u00e0 r\u00f2ng r\u1ecdc gi\u1ea3m, \u0111\u1ed3ng th\u1eddi \u0111\u1ed9 u\u1ed1n cong c\u0169ng gi\u1ea3m. N\u1ebfu ch\u1ec9 x\u00e9t \u0111\u1ebfn \u1ee9ng su\u1ea5t u\u1ed1n, \u0111\u01b0\u1eddng k\u00ednh r\u00f2ng r\u1ecdc cho d\u00e2y c\u00e1p th\u00e9p ti\u1ebfp x\u00fac \u0111i\u1ec3m 6\u00d719 c\u00f3 th\u1ec3 t\u0103ng l\u00ean g\u1ea5p 90 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh d\u00e2y c\u00e1p \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd d\u00e2y c\u00e1p. Tuy nhi\u00ean, ngo\u1ea1i tr\u1eeb c\u00e1c thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t, r\u00f2ng r\u1ecdc c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn nh\u01b0 v\u1eady hi\u1ebfm khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1ef1c t\u1ebf v\u00ec hai l\u00fd do:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>R\u00f2ng r\u1ecdc l\u1edbn nh\u01b0 v\u1eady kh\u00f4ng th\u1ef1c t\u1ebf \u0111\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb n\u00e2ng h\u1ea1.<\/li>\n\n\n\n<li>U\u1ed1n cong hi\u1ebfm khi l\u00e0 y\u1ebfu t\u1ed1 duy nh\u1ea5t xu\u1ea5t hi\u1ec7n trong b\u1ea5t k\u1ef3 \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng n\u00e0o.<\/li>\n<\/ol>\n\n\n\n<p>Tr\u00ean th\u1ef1c t\u1ebf, ngo\u00e0i \u0111\u1ed9 u\u1ed1n cong, nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a d\u00e2y c\u00e1p, bao g\u1ed3m \u1ee9ng su\u1ea5t l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, m\u00e0i m\u00f2n, hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f3ng c\u1ee5c, va \u0111\u1eadp, rung \u0111\u1ed9ng, xo\u1eafn, t\u1ed1c \u0111\u1ed9 quay, qu\u1ea5n d\u00e2y kh\u00f4ng \u0111\u00fang c\u00e1ch, \u0103n m\u00f2n v\u00e0 b\u1ea3o tr\u00ec kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7. M\u1ed9t ho\u1eb7c nhi\u1ec1u y\u1ebfu t\u1ed1 n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a d\u00e2y c\u00e1p nhi\u1ec1u h\u01a1n c\u1ea3 k\u00edch th\u01b0\u1edbc r\u00f2ng r\u1ecdc.<\/p>\n\n\n\n<p>K\u00edch th\u01b0\u1edbc r\u00f2ng r\u1ecdc t\u1ed1i \u01b0u c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1ch xem x\u00e9t \u0111\u1ed3ng th\u1eddi c\u00e1c y\u1ebfu t\u1ed1 an to\u00e0n, kinh t\u1ebf v\u1eadn h\u00e0nh v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c. Tuy nhi\u00ean, \u00e1p su\u1ea5t cao gi\u1eefa c\u00e1c s\u1ee3i d\u00e2y t\u1ea1i c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac c\u1ee7a d\u00e2y c\u00e1p, k\u1ebft h\u1ee3p v\u1edbi \u1ee9ng su\u1ea5t u\u1ed1n cao sinh ra khi d\u00e2y c\u00e1p ch\u1ea1y qua r\u00f2ng r\u1ecdc nh\u1ecf, c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y h\u01b0 h\u1ecfng v\u00e0 \u0111\u1ee9t d\u00e2y c\u00e1p. Trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n b\u1ea5t l\u1ee3i n\u00e0y, hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ee9t d\u00e2y th\u01b0\u1eddng x\u1ea3y ra gi\u1eefa c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac c\u1ee7a c\u00e1c s\u1ee3i li\u1ec1n k\u1ec1. C\u00e1c v\u1ebft \u0111\u1ee9t t\u1ea1i nh\u1eefng v\u1ecb tr\u00ed n\u00e0y th\u01b0\u1eddng kh\u00f3 ho\u1eb7c th\u1eadm ch\u00ed kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch ki\u1ec3m tra b\u00ean ngo\u00e0i.<\/p>\n\n\n\n<p>Do \u0111\u00f3, \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb c\u00f3 y\u00eau c\u1ea7u an to\u00e0n nghi\u00eam ng\u1eb7t kh\u00e1c, n\u00ean ch\u1ecdn r\u00f2ng r\u1ecdc l\u1edbn h\u01a1n \u0111\u1ec3 qu\u00e1 tr\u00ecnh h\u01b0 h\u1ecfng d\u00e2y c\u00e1p di\u1ec5n ra t\u1eeb t\u1eeb h\u01a1n v\u00e0 h\u01b0 h\u1ecfng x\u1ea3y ra tr\u00ean b\u1ec1 m\u1eb7t d\u00e2y c\u00e1p, n\u01a1i d\u1ec5 ph\u00e1t hi\u1ec7n v\u00e0 \u0111\u00e1nh gi\u00e1 h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-overhead-crane-sheave-rope-grooves\">3. R\u00e3nh d\u00e2y c\u00e1p r\u00f2ng r\u1ecdc c\u1ea7n c\u1ea9u tr\u00ean cao<\/h2>\n\n\n\n<p>\u0110\u1ec3 d\u00e2y c\u00e1p th\u00e9p ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t, r\u00e3nh r\u00f2ng r\u1ecdc ph\u1ea3i c\u00f3 \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ee7 l\u1edbn \u0111\u1ec3 duy tr\u00ec khe h\u1edf th\u00edch h\u1ee3p xung quanh d\u00e2y c\u00e1p. \u0110\u01b0\u1eddng k\u00ednh r\u00e3nh r\u00f2ng r\u1ecdc kh\u00f4ng th\u1ec3 gi\u1eef nguy\u00ean. S\u1ef1 thay \u0111\u1ed5i c\u1ee7a n\u00f3 ch\u1ee7 y\u1ebfu b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi d\u00e2y c\u00e1p th\u00e9p v\u00e0, \u1edf m\u1ee9c \u0111\u1ed9 l\u1edbn, b\u1edfi v\u1eadt li\u1ec7u c\u1ee7a r\u00f2ng r\u1ecdc v\u00e0 \u00e1p l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean n\u00f3.<\/p>\n\n\n\n<p>Do r\u00e3nh li\u00ean t\u1ee5c b\u1ecb m\u00f2n, n\u00ean khi d\u00e2y c\u00e1p th\u00e9p g\u1ea7n h\u1ebft tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng, r\u00e3nh th\u01b0\u1eddng b\u1ecb m\u00f2n \u0111\u1ebfn k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t v\u1ea5n \u0111\u1ec1: m\u1ed7i khi l\u1eafp \u0111\u1eb7t d\u00e2y c\u00e1p th\u00e9p m\u1edbi, r\u00e3nh s\u1ebd c\u1ea7n \u0111\u01b0\u1ee3c gia c\u00f4ng l\u1ea1i ho\u1eb7c r\u00f2ng r\u1ecdc c\u1ea7n \u0111\u01b0\u1ee3c thay th\u1ebf. Tuy nhi\u00ean, tr\u00ean th\u1ef1c t\u1ebf, vi\u1ec7c gia c\u00f4ng l\u1ea1i r\u00e3nh ho\u1eb7c thay th\u1ebf r\u00f2ng r\u1ecdc l\u00e0 kh\u00f4ng kinh t\u1ebf.<\/p>\n\n\n\n<p>Khi gia c\u00f4ng l\u1ea1i r\u00e3nh c\u00e1p, ph\u1ea7n m\u1eb7t b\u00edch th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eeda ch\u1eefa tr\u01b0\u1edbc, sau \u0111\u00f3 ph\u1ea7n \u0111\u00e1y r\u00e3nh \u0111\u01b0\u1ee3c c\u1eaft \u0111\u1ebfn \u0111\u01b0\u1eddng k\u00ednh th\u00edch h\u1ee3p. N\u1ebfu ch\u1ec9 c\u1eaft ph\u1ea7n \u0111\u00e1y r\u00e3nh, g\u00f3c h\u1ecdng g\u1ea7n \u0111\u00e1y c\u00f3 th\u1ec3 tr\u1edf n\u00ean qu\u00e1 nh\u1ecf, kh\u00f4ng \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 khe h\u1edf, l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 s\u1ef1 m\u00e0i m\u00f2n c\u1ee7a c\u00e1p th\u00e9p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-overhead-crane-wire-rope-pressure\">4. \u00c1p su\u1ea5t c\u00e1p th\u00e9p c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao<\/h2>\n\n\n\n<p>Ngo\u00e0i \u1ee9ng su\u1ea5t u\u1ed1n sinh ra khi d\u00e2y c\u00e1p ch\u1ea1y qua r\u00f2ng r\u1ecdc, d\u00e2y c\u00e1p c\u00f2n ch\u1ecbu \u00e1p l\u1ef1c h\u01b0\u1edbng t\u00e2m do ti\u1ebfp x\u00fac v\u1edbi r\u00f2ng r\u1ecdc. \u00c1p l\u1ef1c n\u00e0y t\u1ea1o ra \u1ee9ng su\u1ea5t c\u1eaft trong d\u00e2y c\u00e1p, l\u00e0m thay \u0111\u1ed5i c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 m\u00e0i m\u00f2n c\u1ee7a r\u00e3nh r\u00f2ng r\u1ecdc. Do \u0111\u00f3, c\u1ea7n xem x\u00e9t \u0111\u1ed9 l\u1edbn c\u1ee7a \u00e1p l\u1ef1c h\u01b0\u1edbng t\u00e2m v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a v\u1eadt li\u1ec7u r\u00f2ng r\u1ecdc khi l\u1ef1a ch\u1ecdn c\u1ea5u tr\u00fac d\u00e2y c\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-overhead-crane-drums\">5. Tang tr\u1ed1ng c\u1ea9u tr\u1ee5c tr\u00ean cao<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2400\" height=\"1600\" src=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/Drum_1.jpg\" alt=\"C\u00e1i tr\u1ed1ng\" class=\"wp-image-2099\" srcset=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/Drum_1.jpg 2400w, https:\/\/www.dgcrane.com\/wp-content\/uploads\/Drum_1-1536x1024.jpg 1536w, https:\/\/www.dgcrane.com\/wp-content\/uploads\/Drum_1-2048x1365.jpg 2048w\" sizes=\"(max-width: 2400px) 100vw, 2400px\" \/><\/figure>\n\n\n\n<p>C\u00e1c <a href=\"https:\/\/www.dgcrane.com\/vi\/products\/rope-drums\/\">tr\u1ed1ng c\u1ea7n c\u1ea9u<\/a> K\u00edch th\u01b0\u1edbc, h\u00ecnh d\u1ea1ng r\u00e3nh v\u00e0 \u00e1p su\u1ea5t t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 th\u1ea3o lu\u1eadn \u1edf tr\u00ean \u0111\u1ed1i v\u1edbi r\u00f2ng r\u1ecdc.<\/p>\n\n\n\n<p>Khi tang tr\u1ed1ng c\u00f3 b\u1ec1 m\u1eb7t nh\u1eb5n, \u00e1p su\u1ea5t h\u01b0\u1edbng t\u00e2m th\u1ef1c t\u1ebf t\u01b0\u01a1ng \u0111\u1ed1i cao v\u00ec d\u00e2y c\u00e1p ch\u1ec9 \u0111\u01b0\u1ee3c \u0111\u1ee1 \u1edf m\u1ed9t ph\u00eda v\u00e0 ph\u1ea7n r\u00eca kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ee1. V\u1edbi lo\u1ea1i tang tr\u1ed1ng n\u00e0y, c\u1ea3 d\u00e2y c\u00e1p v\u00e0 tang tr\u1ed1ng \u0111\u1ec1u b\u1ecb m\u00f2n nhanh h\u01a1n so v\u1edbi tang tr\u1ed1ng c\u00f3 r\u00e3nh, v\u00e0 d\u00e2y c\u00e1p d\u1ec5 b\u1ecb h\u01b0 h\u1ea1i h\u01a1n do \u00e1p su\u1ea5t.<\/p>\n\n\n\n<p>Khi \u1ee9ng su\u1ea5t u\u1ed1n l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a d\u00e2y c\u00e1p th\u00e9p, \u0111\u01b0\u1eddng k\u00ednh tang cu\u1ed1n c\u00f3 th\u1ec3 nh\u1ecf h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi \u0111\u01b0\u1eddng k\u00ednh r\u00f2ng r\u1ecdc trong h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y l\u00e0 do, trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed9ng theo m\u1ed9t h\u01b0\u1edbng, d\u00e2y c\u00e1p u\u1ed1n cong hai l\u1ea7n tr\u00ean m\u1ed7i r\u00f2ng r\u1ecdc nh\u01b0ng ch\u1ec9 u\u1ed1n cong m\u1ed9t l\u1ea7n tr\u00ean tang cu\u1ed1n. D\u00e2y c\u00e1p u\u1ed1n cong l\u1ea7n \u0111\u1ea7u ti\u00ean khi n\u00f3 ti\u1ebfn \u0111\u1ebfn g\u1ea7n m\u1ed9t r\u00f2ng r\u1ecdc v\u00e0 chuy\u1ec3n t\u1eeb \u0111\u01b0\u1eddng th\u1eb3ng sang \u0111\u1ed9 cong c\u1ee7a r\u00f2ng r\u1ecdc. N\u00f3 u\u1ed1n cong l\u1ea7n th\u1ee9 hai khi n\u00f3 th\u1eb3ng tr\u1edf l\u1ea1i khi r\u1eddi kh\u1ecfi r\u00f2ng r\u1ecdc.<\/p>\n\n\n\n<p>Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n c\u1ee7a d\u00e2y ng\u1eafn. Khi m\u1ed9t ph\u1ea7n d\u00e2y di chuy\u1ec3n qua l\u1ea1i tr\u00ean tang cu\u1ed1n m\u00e0 kh\u00f4ng \u0111i qua r\u00f2ng r\u1ecdc, s\u1ed1 chu k\u1ef3 u\u1ed1n cong s\u1ebd gi\u1ea3m v\u00e0 qu\u00e1 tr\u00ecnh h\u01b0 h\u1ecfng di\u1ec5n ra ch\u1eadm h\u01a1n.<\/p>\n\n\n\n<p>Khi s\u1eed d\u1ee5ng tr\u1ed1ng c\u00f3 r\u00e3nh, h\u00ecnh d\u1ea1ng r\u00e3nh ph\u00f9 h\u1ee3p gi\u00fap gi\u1eef cho d\u00e2y qu\u1ea5n \u1edf \u0111\u00fang v\u1ecb tr\u00ed. Duy tr\u00ec kho\u1ea3ng c\u00e1ch ph\u00f9 h\u1ee3p gi\u1eefa c\u00e1c r\u00e3nh r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 c\u00e1c v\u00f2ng d\u00e2y li\u1ec1n k\u1ec1 c\u00f3 \u0111\u1ee7 kho\u1ea3ng tr\u1ed1ng, nh\u01b0ng kh\u00f4ng qu\u00e1 l\u1edbn. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n d\u00e2y \u0111ang \u0111\u01b0\u1ee3c qu\u1ea5n v\u00e0o tr\u1ed1ng b\u1ecb \u00e9p ch\u1eb7t ho\u1eb7c c\u1ecd x\u00e1t v\u1edbi d\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c qu\u1ea5n tr\u00ean tr\u1ed1ng.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi ki\u1ec3u qu\u1ea5n nhi\u1ec1u l\u1edbp, kho\u1ea3ng c\u00e1ch gi\u1eefa t\u00e2m c\u00e1c r\u00e3nh ph\u1ea3i \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ng\u0103n c\u00e1c d\u00e2y c\u00e1p ch\u1ea1m v\u00e0o nhau \u1edf g\u00f3c c\u0103ng t\u1ed1i \u0111a.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-other-failure-factors\">6. C\u00e1c y\u1ebfu t\u1ed1 g\u00e2y h\u1ecfng h\u00f3c kh\u00e1c<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u0102n m\u00f2n:<\/strong> \u0102n m\u00f2n l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra s\u1ef1 h\u1ecfng h\u00f3c c\u1ee7a d\u00e2y c\u00e1p th\u00e9p. M\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n do ho\u1ea1t \u0111\u1ed9ng t\u1ea1o ra c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a d\u00e2y c\u00e1p.<\/li>\n\n\n\n<li><strong>T\u1ea3i tr\u1ecdng va \u0111\u1eadp v\u00e0 rung \u0111\u1ed9ng:<\/strong> Vi\u1ec7c t\u00e1c \u0111\u1ed9ng t\u1ea3i tr\u1ecdng l\u00ean d\u00e2y c\u00e1p th\u00e9p v\u00e0 l\u00e0m cho n\u00f3 ch\u1ecbu rung \u0111\u1ed9ng s\u1ebd t\u1ea1o ra \u1ee9ng su\u1ea5t u\u1ed1n cong t\u1ea7n s\u1ed1 cao. T\u00e1c \u0111\u1ed9ng c\u1ee7a rung \u0111\u1ed9ng \u0111\u1eb7c bi\u1ec7t nghi\u00eam tr\u1ecdng \u1edf \u0111\u1ea7u d\u00e2y c\u00e1p v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra h\u1ecfng h\u00f3c do m\u1ecfi.<\/li>\n\n\n\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao:<\/strong> N\u1ebfu d\u00e2y c\u00e1p th\u00e9p ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao, n\u00f3 c\u00f3 th\u1ec3 b\u1ecb h\u1ecfng do \u0111\u1ed9 b\u1ec1n k\u00e9o gi\u1ea3m.<\/li>\n<\/ol>\n\n\n\n<p>Ph\u00e2n t\u00edch nguy\u00ean nh\u00e2n s\u1ef1 c\u1ed1 n\u00eau tr\u00ean cho th\u1ea5y r\u1eb1ng s\u1ef1 c\u1ed1 \u0111\u1ee9t c\u00e1p th\u00e9p c\u1ea7n c\u1ea9u tr\u00ean cao th\u01b0\u1eddng l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a s\u1ef1 t\u00edch l\u0169y \u0111\u1ed3ng th\u1eddi nhi\u1ec1u y\u1ebfu t\u1ed1. Trong m\u1ed9t cu\u1ed9c \u0111i\u1ec1u tra s\u1ef1 c\u1ed1 th\u1ef1c t\u1ebf, c\u1ea7n ph\u1ea3i ph\u00e2n t\u00edch to\u00e0n di\u1ec7n c\u00e1c y\u1ebfu t\u1ed1, ph\u00e2n bi\u1ec7t t\u1ea7m quan tr\u1ecdng t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a ch\u00fang v\u00e0 x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra s\u1ef1 c\u1ed1 \u0111\u1ec3 gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1p th\u00e9p.<\/p>","protected":false},"excerpt":{"rendered":"D\u00e2y c\u00e1p th\u00e9p l\u00e0 m\u1ed9t trong nh\u1eefng b\u1ed9 ph\u1eadn n\u00e2ng h\u1ea1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i cao, \u0111\u1ed9 linh ho\u1ea1t t\u1ed1t, chuy\u1ec3n \u0111\u1ed9ng tr\u01a1n tru v\u00e0 ti\u1ebfng \u1ed3n th\u1ea5p. H\u1ea7u h\u1ebft c\u00e1c c\u1ea7n c\u1ea9u tr\u00ean cao \u0111\u1ec1u s\u1eed d\u1ee5ng d\u00e2y c\u00e1p th\u00e9p \u0111\u1ec3 n\u00e2ng h\u1ea1 h\u00e0ng h\u00f3a. N\u1ebfu d\u00e2y c\u00e1p th\u00e9p \u0111\u1ed9t ng\u1ed9t b\u1ecb \u0111\u1ee9t do s\u1ef1 c\u1ed1, h\u1eadu qu\u1ea3 c\u00f3 th\u1ec3 r\u1ea5t nghi\u00eam tr\u1ecdng. Do \u0111\u00f3, ph\u00e2n t\u00edch s\u1ef1 c\u1ed1 c\u1ee7a d\u00e2y c\u00e1p th\u00e9p l\u00e0 r\u1ea5t quan tr\u1ecdng [\u2026]","protected":false},"featured_media":17460,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[351],"posts_tag":[1068],"class_list":["post-17452","posts","type-posts","status-publish","has-post-thumbnail","hentry","posts_category-blog","posts_tag-overhead-crane-wire-rope-failure-analysis"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/17452"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":8,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/17452\/revisions"}],"predecessor-version":[{"id":17461,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/17452\/revisions\/17461"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/media\/17460"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/media?parent=17452"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts_category?post=17452"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts_tag?post=17452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}