{"id":11865,"date":"2026-06-30T05:59:36","date_gmt":"2026-06-30T05:59:36","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?post_type=posts&#038;p=11865"},"modified":"2026-06-30T06:08:57","modified_gmt":"2026-06-30T06:08:57","slug":"overhead-crane-wire-rope-sizing-without-tables","status":"publish","type":"posts","link":"https:\/\/www.kscranegroup.com\/vi\/posts\/overhead-crane-wire-rope-sizing-without-tables\/","title":{"rendered":"T\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc c\u00e1p th\u00e9p cho c\u1ea7n c\u1ea9u tr\u00ean cao m\u00e0 kh\u00f4ng c\u1ea7n b\u1ea3ng bi\u1ec3u \u2014 Ph\u01b0\u01a1ng ph\u00e1p c\u00f4ng th\u1ee9c nhanh d\u00e0nh cho k\u1ef9 s\u01b0 hi\u1ec7n tr\u01b0\u1eddng"},"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-determine-the-overhead-crane-wire-rope-safety-factor\">1. X\u00e1c \u0111\u1ecbnh h\u1ec7 s\u1ed1 an to\u00e0n c\u1ee7a d\u00e2y c\u00e1p c\u1ea7n c\u1ea9u tr\u00ean cao.<\/a><\/li><li><a href=\"#2-identify-the-overhead-crane-wire-rope-class\">2. X\u00e1c \u0111\u1ecbnh lo\u1ea1i d\u00e2y c\u00e1p th\u00e9p c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao.<\/a><ul><li><a href=\"#class-a-linear-contact-preferred-for-crane-hoisting\">Lo\u1ea1i A \u2014 Ti\u1ebfp x\u00fac tuy\u1ebfn t\u00ednh (\u01afu ti\u00ean s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e2ng h\u1ea1 b\u1eb1ng c\u1ea7n c\u1ea9u)<\/a><\/li><li><a href=\"#class-b-point-contact-secondary-applications\">Lo\u1ea1i B \u2014 Ti\u1ebfp x\u00fac \u0111i\u1ec3m (\u1ee8ng d\u1ee5ng th\u1ee9 c\u1ea5p)<\/a><\/li><\/ul><\/li><li><a href=\"#3-the-quick-diameter-formula-for-overhead-crane-wire-rope-sizing\">3. C\u00f4ng th\u1ee9c t\u00ednh \u0111\u01b0\u1eddng k\u00ednh nhanh cho c\u00e1p th\u00e9p c\u1ea7n c\u1ea9u tr\u00ean cao<\/a><ul><li><a href=\"#adjusting-for-different-tensile-grades\">\u0110i\u1ec1u ch\u1ec9nh cho c\u00e1c c\u1ea5p \u0111\u1ed9 b\u1ec1n k\u00e9o kh\u00e1c nhau<\/a><\/li><\/ul><\/li><li><a href=\"#4-rope-weight-estimation\">4. \u01af\u1edbc t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng d\u00e2y th\u1eebng<\/a><\/li><li><a href=\"#5-back-calculating-capacity-from-an-existing-rope\">5. T\u00ednh to\u00e1n ng\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u1eeb d\u00e2y c\u00e1p hi\u1ec7n c\u00f3<\/a><\/li><li><a href=\"#6-overhead-crane-wire-rope-end-termination-methods\">6. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p k\u1ebft th\u00fac \u0111\u1ea7u d\u00e2y c\u00e1p th\u00e9p c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao<\/a><\/li><li><a href=\"#appendix-class-b-coefficients-point-contact-ropes\">Ph\u1ee5 l\u1ee5c: H\u1ec7 s\u1ed1 lo\u1ea1i B (D\u00e2y ti\u1ebfp x\u00fac \u0111i\u1ec3m)<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Khi b\u1ea1n \u0111ang \u1edf c\u00f4ng tr\u01b0\u1eddng ho\u1eb7c trong cu\u1ed9c h\u1ecdp d\u1ef1 \u00e1n v\u00e0 ai \u0111\u00f3 h\u1ecfi \u201cT\u00f4i c\u1ea7n lo\u1ea1i d\u00e2y c\u00e1p c\u1ea9u tr\u00ean cao c\u00f3 \u0111\u01b0\u1eddng k\u00ednh bao nhi\u00eau cho t\u1ea3i tr\u1ecdng X t\u1ea5n?\u201d, b\u1ea1n c\u00f3 th\u1ec3 kh\u00f4ng c\u00f3 s\u1eb5n ti\u00eau chu\u1ea9n GB\/T 20118 ho\u1eb7c ISO 2408. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00f4ng th\u1ee9c nhanh d\u1ef1a tr\u00ean h\u1ec7 s\u1ed1 cho d\u00e2y c\u00e1p c\u1ea9u tr\u00ean cao lo\u1ea1i 6\u00d719 v\u00e0 6\u00d736 \u2014 hai nh\u00f3m lo\u1ea1i n\u00e0y bao ph\u1ee7 h\u01a1n 90% trong c\u00e1c \u1ee9ng d\u1ee5ng n\u00e2ng h\u1ea1 b\u1eb1ng c\u1ea7n c\u1ea9u. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng d\u1ef1a tr\u00ean b\u1ea3ng ti\u00eau chu\u1ea9n GB\/T 20118-2017 v\u1edbi sai s\u1ed1 trong ph\u1ea1m vi 2%.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-determine-the-overhead-crane-wire-rope-safety-factor\">1. X\u00e1c \u0111\u1ecbnh h\u1ec7 s\u1ed1 an to\u00e0n c\u1ee7a d\u00e2y c\u00e1p c\u1ea7n c\u1ea9u tr\u00ean cao.<\/h2>\n\n\n\n<p>H\u1ec7 s\u1ed1 an to\u00e0n l\u00e0 t\u1ef7 l\u1ec7 gi\u1eefa l\u1ef1c \u0111\u1ee9t t\u1ed1i thi\u1ec3u c\u1ee7a d\u00e2y th\u1eebng v\u00e0 t\u1ed5ng t\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u1ee8ng d\u1ee5ng<\/th><th>H\u1ec7 s\u1ed1 an to\u00e0n t\u1ed1i thi\u1ec3u<\/th><\/tr><\/thead><tbody><tr><td>H\u1ec7 gi\u1eb1ng t\u0129nh \/ d\u00e2y neo (l\u1ef1c c\u0103ng th\u01b0\u1eddng tr\u1ef1c)<\/td><td>3<\/td><\/tr><tr><td>Thi\u1ebft b\u1ecb n\u00e2ng h\u1ea1 th\u1ee7 c\u00f4ng<\/td><td>4<\/td><\/tr><tr><td>Thi\u1ebft b\u1ecb n\u00e2ng h\u1ea1 b\u1eb1ng \u0111i\u1ec7n<\/td><td>5\u20136<\/td><\/tr><tr><td>Thi\u1ebft k\u1ebf c\u1ea7n c\u1ea9u<\/td><td>Theo ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf c\u1ea7n c\u1ea9u GB\/T 3811.<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">H\u1ec7 s\u1ed1 an to\u00e0n c\u1ee7a d\u00e2y c\u00e1p c\u1ea7n c\u1ea9u tr\u00ean cao<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1217\" height=\"1293\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Determine-the-Safety-Factor-of-overhead-crane-wire-rope.png\" alt=\"\" class=\"wp-image-11861\"\/><\/figure>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi vi\u1ec7c n\u00e2ng v\u1eadt th\u00f4ng th\u01b0\u1eddng b\u1eb1ng thi\u1ebft b\u1ecb \u0111i\u1ec7n, h\u00e3y ch\u1ecdn m\u1ee9c 5 ho\u1eb7c 6. Khi t\u1ea3i tr\u1ecdng c\u1ea7n s\u1ef1 ti\u1ebfp c\u1eadn c\u1ee7a ng\u01b0\u1eddi ho\u1eb7c \u0111\u01b0\u1ee3c treo ph\u00eda tr\u00ean c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng, h\u00e3y ch\u1ecdn m\u1ee9c cao h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-identify-the-overhead-crane-wire-rope-class\">2. X\u00e1c \u0111\u1ecbnh lo\u1ea1i d\u00e2y c\u00e1p th\u00e9p c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"class-a-linear-contact-preferred-for-crane-hoisting\">Lo\u1ea1i A \u2014 Ti\u1ebfp x\u00fac tuy\u1ebfn t\u00ednh (\u01afu ti\u00ean s\u1eed d\u1ee5ng cho vi\u1ec7c n\u00e2ng h\u1ea1 b\u1eb1ng c\u1ea7n c\u1ea9u)<\/h3>\n\n\n\n<p>D\u00e2y d\u1eabn lo\u1ea1i 6\u00d719 v\u00e0 lo\u1ea1i 6\u00d736. C\u00e1c d\u00e2y b\u00ean trong m\u1ed7i b\u00f3 \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed sao cho s\u1ef1 ti\u1ebfp x\u00fac x\u1ea3y ra d\u1ecdc theo c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1ea1i c\u00e1c \u0111i\u1ec3m, gi\u00fap ph\u00e2n b\u1ed1 \u1ee9ng su\u1ea5t \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n v\u00e0 mang l\u1ea1i tu\u1ed5i th\u1ecd ch\u1ecbu m\u1ecfi t\u1ed1t h\u01a1n. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn ti\u00eau chu\u1ea9n cho c\u00e1c c\u01a1 c\u1ea5u n\u00e2ng h\u1ea1 c\u1ee7a c\u1ea7n c\u1ea9u.<\/p>\n\n\n\n<p>C\u00e1c c\u1ea5u h\u00ecnh ph\u1ed5 bi\u1ebfn: 6\u00d719S-FC, 6\u00d719S-IWRC, 6\u00d736WS-FC, 6\u00d736WS-IWRC, 6\u00d717S, 6\u00d721S, 6\u00d721F, 6\u00d726WS, 6\u00d719W, 6\u00d725F, 6\u00d731WS, 6\u00d729F, 6\u00d737FS, 6\u00d741WS, 6\u00d746WS, 6\u00d749SWS, 6\u00d755SWS.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>M\u00e3 s\u1ed1<\/th><th>Ngh\u0129a<\/th><th>\u0110\u1eb7c \u0111i\u1ec3m<\/th><\/tr><\/thead><tbody><tr><td>T<\/td><td>Warrington (c\u00e1c lo\u1ea1i d\u00e2y c\u00f3 k\u00edch th\u01b0\u1edbc xen k\u1ebd \u1edf l\u1edbp ngo\u00e0i)<\/td><td>T\u00ednh linh ho\u1ea1t t\u1ed1t<\/td><\/tr><tr><td>S<\/td><td>Seale (d\u00e2y ngo\u00e0i th\u00f4)<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t<\/td><\/tr><tr><td>F<\/td><td>V\u1eadt li\u1ec7u l\u1ea5p \u0111\u1ea7y (c\u00e1c s\u1ee3i d\u00e2y nh\u1ecf l\u1ea5p \u0111\u1ea7y gi\u1eefa c\u00e1c l\u1edbp)<\/td><td>C\u1ea5u tr\u00fac nh\u1ecf g\u1ecdn<\/td><\/tr><tr><td>WS<\/td><td>V\u1eadt li\u1ec7u t\u1ed5ng h\u1ee3p Warrington-Seale<\/td><td>S\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t nh\u1ea5t gi\u1eefa t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi \u2014 th\u01b0\u1eddng th\u1ea5y nh\u1ea5t \u1edf c\u1ea7n c\u1ea9u.<\/td><\/tr><tr><td>FC<\/td><td>L\u00f5i s\u1ee3i<\/td><td>Ch\u1ee9a ch\u1ea5t b\u00f4i tr\u01a1n, linh ho\u1ea1t h\u01a1n<\/td><\/tr><tr><td>IWRC<\/td><td>L\u00f5i c\u00e1p th\u00e9p \u0111\u1ed9c l\u1eadp (th\u00e9p)<\/td><td>\u0110\u1ed9 b\u1ec1n \u0111\u1ee9t cao h\u01a1n \u2014 g\u1ea5p kho\u1ea3ng 1,08 l\u1ea7n so v\u1edbi lo\u1ea1i FC t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a d\u00e2y c\u00e1p c\u1ea9u<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"class-b-point-contact-secondary-applications\">Lo\u1ea1i B \u2014 Ti\u1ebfp x\u00fac \u0111i\u1ec3m (\u1ee8ng d\u1ee5ng th\u1ee9 c\u1ea5p)<\/h3>\n\n\n\n<p>Lo\u1ea1i 6\u00d719M v\u00e0 lo\u1ea1i 6\u00d737M. C\u00e1c s\u1ee3i d\u00e2y b\u1eaft ch\u00e9o nhau t\u1ea1i c\u00e1c \u0111i\u1ec3m ri\u00eang bi\u1ec7t, t\u1ea1o ra s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t v\u00e0 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi. Ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho d\u00e2y neo t\u0129nh v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee5 tr\u1ee3.<\/p>\n\n\n\n<p>C\u00e1c c\u1ea5u tr\u00fac ph\u1ed5 bi\u1ebfn: 6\u00d719M-FC, 6\u00d719M-IWRC, 6\u00d737M-FC, 6\u00d737M-IWRC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-the-quick-diameter-formula-for-overhead-crane-wire-rope-sizing\">3. C\u00f4ng th\u1ee9c t\u00ednh \u0111\u01b0\u1eddng k\u00ednh nhanh cho c\u00e1p th\u00e9p c\u1ea7n c\u1ea9u tr\u00ean cao<\/h2>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi lo\u1ea1i A, c\u1ea5p \u0111\u1ed9 b\u1ec1n k\u00e9o 1770 MPa, l\u00f5i s\u1ee3i \u2014 c\u1ea5u h\u00ecnh d\u00e2y c\u00e1p th\u00e9p ph\u1ed5 bi\u1ebfn nh\u1ea5t cho c\u1ea7n c\u1ea9u tr\u00ean cao:<\/p>\n\n\n\n<p>d \u2265 \u221a(T \u00f7 k)<\/p>\n\n\n\n<ul>\n<li>trong \u0111\u00f3: k = 0,06<\/li>\n\n\n\n<li>T = t\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c an to\u00e0n tr\u00ean m\u1ed7i s\u1ee3i d\u00e2y (t\u1ea5n)<\/li>\n\n\n\n<li>d = \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a c\u1ee7a d\u00e2y th\u1eebng (mm)<\/li>\n<\/ul>\n\n\n\n<p>N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n: d\u00b2 \u00d7 0,06 = T. B\u00ecnh ph\u01b0\u01a1ng \u0111\u01b0\u1eddng k\u00ednh d\u00e2y th\u1eebng t\u00ednh b\u1eb1ng milim\u00e9t nh\u00e2n v\u1edbi 0,06 b\u1eb1ng t\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c an to\u00e0n t\u00ednh b\u1eb1ng t\u1ea5n.<\/p>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong> N\u00e2ng m\u1ed9t v\u1eadt n\u1eb7ng 10 t\u1ea5n c\u1ea7n \u0111\u1ed9 cao d = \u221a(10 \u00f7 0,06) = \u221a166,7 \u2248 12,9 mm \u2192 l\u00e0m tr\u00f2n l\u00ean th\u00e0nh <strong>13 mm<\/strong> T\u1eeb lo\u1ea1t \u0111\u01b0\u1eddng k\u00ednh ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p>D\u00e3y \u0111\u01b0\u1eddng k\u00ednh ti\u00eau chu\u1ea9n (mm) cho lo\u1ea1i A: 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56. (\u0110\u01b0\u1eddng k\u00ednh 6 v\u00e0 7 mm t\u1ed3n t\u1ea1i nh\u01b0ng hi\u1ebfm g\u1eb7p trong vi\u1ec7c n\u00e2ng h\u1ea1 b\u1eb1ng c\u1ea7n c\u1ea9u; 58 v\u00e0 60 mm t\u00f9y thu\u1ed9c v\u00e0o c\u1ea5u tr\u00fac c\u1ee5 th\u1ec3.)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"adjusting-for-different-tensile-grades\">\u0110i\u1ec1u ch\u1ec9nh cho c\u00e1c c\u1ea5p \u0111\u1ed9 b\u1ec1n k\u00e9o kh\u00e1c nhau<\/h3>\n\n\n\n<p>H\u1ec7 s\u1ed1 c\u01a1 b\u1ea3n k = 0,06 \u00e1p d\u1ee5ng cho 1770 MPa. \u0110\u1ed1i v\u1edbi m\u1ed7i b\u01b0\u1edbc t\u0103ng \u00e1p su\u1ea5t kho\u1ea3ng 90\u2013100 MPa, \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng \u00b10,003:<\/p>\n\n\n\n<p>Th\u0103ng h\u1ea1ng: k_i = 0,06 + 0,003 \u00d7 i<\/p>\n\n\n\n<p>Di chuy\u1ec3n xu\u1ed1ng c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n: k_i = 0,06 \u2013 (0,003 \u00d7 i + 0,001)<\/p>\n\n\n\n<p>Trong \u0111\u00f3 i = 0 \u1edf m\u1ee9c 1770 MPa. D\u00e3y c\u1ea5p \u0111\u1ed9 b\u1ec1n k\u00e9o: 1570 \u2192 1670 \u2192 1770 \u2192 1870 \u2192 1960 \u2192 2160 MPa.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u0110\u1ed9 b\u1ec1n k\u00e9o (MPa)<\/th><th>L\u00f5i s\u1ee3i k<\/th><th>L\u00f5i th\u00e9p k (= FC \u00d7 1,08)<\/th><\/tr><\/thead><tbody><tr><td>1570<\/td><td>0.053<\/td><td>0.057<\/td><\/tr><tr><td>1670<\/td><td>0.056<\/td><td>0.061<\/td><\/tr><tr><td>1770<\/td><td>0.060<\/td><td>0.064<\/td><\/tr><tr><td>1870<\/td><td>0.063<\/td><td>0.068<\/td><\/tr><tr><td>1960<\/td><td>0.066<\/td><td>0.071<\/td><\/tr><tr><td>2160<\/td><td>0.073 <\/td><td>0.079<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">B\u1ea3ng so s\u00e1nh \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a d\u00e2y c\u00e1p c\u1ea9u<\/figcaption><\/figure>\n\n\n\n<p><strong>Tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi l\u00f5i s\u1ee3i quang 2160 MPa:<\/strong> Gi\u00e1 tr\u1ecb t\u00ednh to\u00e1n l\u00e0 0,072, nh\u01b0ng h\u1ec7 s\u1ed1 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng l\u00e0 0,073 \u2014 c\u1ed9ng th\u00eam 0,001. Ngo\u1ea1i l\u1ec7 n\u00e0y ch\u1ec9 \u00e1p d\u1ee5ng cho c\u1ea5p \u0111\u1ed9 2160.<\/p>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong> \u0110\u1ed1i v\u1edbi l\u00f5i s\u1ee3i 1870 MPa (i = 1), k = 0,06 + 0,003 = 0,063. V\u1edbi c\u00f9ng t\u1ea3i tr\u1ecdng 10 t\u1ea5n: d = \u221a(10 \u00f7 0,063) = \u221a158,7 \u2248 12,6 mm \u2192 l\u00e0m tr\u00f2n l\u00ean 13 mm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-rope-weight-estimation\">4. \u01af\u1edbc t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng d\u00e2y th\u1eebng<\/h2>\n\n\n\n<p>Sau khi ch\u1ecdn \u0111\u01b0\u1eddng k\u00ednh, tr\u1ecdng l\u01b0\u1ee3ng \u01b0\u1edbc t\u00ednh tr\u00ean 100 m\u00e9t l\u00e0:<\/p>\n\n\n\n<p>m_FC = 0,38 \u00d7 d\u00b2 (l\u00f5i s\u1ee3i, Lo\u1ea1i A)<\/p>\n\n\n\n<p>m_IWRC = 0,418 \u00d7 d\u00b2 (l\u00f5i th\u00e9p, Lo\u1ea1i A)<\/p>\n\n\n\n<p>Trong \u0111\u00f3 m l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng (kg tr\u00ean 100 m) v\u00e0 d l\u00e0 \u0111\u01b0\u1eddng k\u00ednh (mm). H\u1ec7 s\u1ed1 tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5p \u0111\u1ed9 b\u1ec1n k\u00e9o.<\/p>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong> D\u00e2y th\u1eebng l\u00f5i s\u1ee3i 13 mm \u2192 m = 0,38 \u00d7 169 = 64 kg tr\u00ean 100 m. M\u1ed9t c\u00fa r\u01a1i t\u1eeb \u0111\u1ed9 cao 30 m\u00e9t n\u1eb7ng kho\u1ea3ng 19 kg.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-back-calculating-capacity-from-an-existing-rope\">5. T\u00ednh to\u00e1n ng\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i t\u1eeb d\u00e2y c\u00e1p hi\u1ec7n c\u00f3<\/h2>\n\n\n\n<p>Khi b\u1ea1n b\u1eaft g\u1eb7p m\u1ed9t s\u1ee3i d\u00e2y th\u1eebng t\u1ea1i c\u00f4ng tr\u01b0\u1eddng m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 th\u00f4ng tin nh\u1eadn d\u1ea1ng n\u00e0o \u2014 kh\u00f4ng c\u00f3 gi\u1ea5y ch\u1ee9ng nh\u1eadn, kh\u00f4ng c\u00f3 nh\u00e3n m\u00e1c, kh\u00f4ng c\u00f3 d\u1ea5u hi\u1ec7u n\u00e0o \u2014 h\u00e3y \u0111o \u0111\u01b0\u1eddng k\u00ednh th\u1ef1c t\u1ebf c\u1ee7a n\u00f3 v\u00e0 \u01b0\u1edbc t\u00ednh t\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c an to\u00e0n c\u1ee7a n\u00f3:<\/p>\n\n\n\n<p>F = 0,06 \u00d7 d\u00b2 (t\u1ea5n, Lo\u1ea1i A, 1770 MPa, l\u00f5i s\u1ee3i)<\/p>\n\n\n\n<p><strong>V\u00ed d\u1ee5:<\/strong> D\u00e2y th\u1eebng t\u00ecm th\u1ea5y c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 16 mm. F = 0,06 \u00d7 256 = 15,4 t\u1ea5n t\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c an to\u00e0n (gi\u1ea3 s\u1eed 1770 MPa, Lo\u1ea1i A, FC). \u0110\u1ed1i v\u1edbi l\u00f5i th\u00e9p: nh\u00e2n v\u1edbi 1,08 \u2192 16,6 t\u1ea5n.<\/p>\n\n\n\n<p><strong>Quan tr\u1ecdng:<\/strong> Ph\u00e9p t\u00ednh ng\u01b0\u1ee3c n\u00e0y gi\u1ea3 \u0111\u1ecbnh d\u00e2y th\u1eebng m\u1edbi \u1edf tr\u1ea1ng th\u00e1i nguy\u00ean b\u1ea3n nh\u01b0 khi s\u1ea3n xu\u1ea5t. N\u00f3 kh\u00f4ng t\u00ednh \u0111\u1ebfn s\u1ef1 hao m\u00f2n, \u0103n m\u00f2n, \u0111\u1ee9t d\u00e2y ho\u1eb7c h\u01b0 h\u1ecfng do m\u1ecfi. Lu\u00f4n lu\u00f4n th\u1ef1c hi\u1ec7n ki\u1ec3m tra tr\u1ef1c quan k\u1ef9 l\u01b0\u1ee1ng v\u00e0 \u0111\u1ed1i chi\u1ebfu v\u1edbi c\u00e1c ti\u00eau ch\u00ed lo\u1ea1i b\u1ecf tr\u01b0\u1edbc khi d\u1ef1a v\u00e0o m\u1ed9t s\u1ee3i d\u00e2y th\u1eebng t\u00ecm th\u1ea5y \u0111\u1ec3 n\u00e2ng v\u1eadt n\u1eb7ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-overhead-crane-wire-rope-end-termination-methods\">6. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p k\u1ebft th\u00fac \u0111\u1ea7u d\u00e2y c\u00e1p th\u00e9p c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1463\" height=\"1075\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2Overhead-Crane-Wire-Rope-End-Termination-Methods.png\" alt=\"\" class=\"wp-image-11862\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Ph\u01b0\u01a1ng ph\u00e1p<\/th><th>Ti\u00eau chu\u1ea9n<\/th><th>Quy t\u1eafc ch\u00ednh<\/th><\/tr><\/thead><tbody><tr><td><strong>k\u1eb9p d\u00e2y c\u00e1p<\/strong><\/td><td>GB\/T 5976<\/td><td>d \u2264 16 \u2192 3 \u0111o\u1ea1n; 16 &lt; d \u2264 20 \u2192 4 \u0111o\u1ea1n; 20 &lt; d \u2264 26 \u2192 5 \u0111o\u1ea1n; d &gt; 26 \u2192 6 \u0111o\u1ea1n. Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c \u0111o\u1ea1n = (5\u20136) \u00d7 d<\/td><\/tr><tr><td><strong>\u1ed4 c\u1eafm n\u00eam<\/strong><\/td><td>GB\/T 5793<\/td><td>Qu\u1ea5n ch\u1eb7t ph\u1ea7n \u0111u\u00f4i ph\u00eda sau n\u00eam; ti\u00eau chu\u1ea9n Trung Qu\u1ed1c kh\u00f4ng b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 k\u1eb9p d\u1ef1 ph\u00f2ng, nh\u01b0ng ti\u00eau chu\u1ea9n M\u1ef9 (ASME B30.5) b\u1ed5 sung th\u00eam m\u1ed9t k\u1eb9p ph\u00eda sau n\u00eam \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 an to\u00e0n.<\/td><\/tr><tr><td><strong>\u1ed0ng n\u1ed1i b\u1eb1ng nh\u00f4m (\u00e9p b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u00e9p)<\/strong><\/td><td>\u2014<\/td><td>C\u1ea7n c\u00f3 m\u00e1y \u00e9p th\u1ee7y l\u1ef1c; c\u00f3 th\u1ec3 ki\u1ec3m ch\u1ee9ng b\u1eb1ng ph\u00e9p \u0111o bi\u1ebfn d\u1ea1ng.<\/td><\/tr><tr><td><strong>N\u1ed1i<\/strong><\/td><td>\u2014<\/td><td>M\u1eaft n\u1ed1i th\u1ee7 c\u00f4ng; ki\u1ec3u truy\u1ec1n th\u1ed1ng, \u0111ang d\u1ea7n \u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f4ng nghi\u1ec7p.<\/td><\/tr><tr><td><strong>\u1ed4 c\u1eafm h\u00ecnh n\u00f3n (h\u1ee3p kim k\u1ebdm\/nh\u1ef1a \u0111\u00fac)<\/strong><\/td><td>\u2014<\/td><td>\u0110\u1ea7u n\u1ed1i c\u01b0\u1eddng \u0111\u1ed9 cao d\u00e0nh cho d\u00e2y th\u1eebng \u0111\u01b0\u1eddng k\u00ednh l\u1edbn.<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">B\u1ea3ng so s\u00e1nh ti\u00eau chu\u1ea9n c\u1ed1 \u0111\u1ecbnh d\u00e2y c\u00e1p cho c\u1ea7n c\u1ea9u tr\u00ean cao<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1319\" height=\"1193\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/3Overhead-Crane-Wire-Rope-End-Termination-Methods1.png\" alt=\"\" class=\"wp-image-11863\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1011\" height=\"706\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/4Overhead-Crane-Wire-Rope-End-Termination-Methods2.jpg\" alt=\"\" class=\"wp-image-11864\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"appendix-class-b-coefficients-point-contact-ropes\">Ph\u1ee5 l\u1ee5c: H\u1ec7 s\u1ed1 lo\u1ea1i B (D\u00e2y ti\u1ebfp x\u00fac \u0111i\u1ec3m)<\/h2>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i d\u00e2y c\u00e1p ti\u1ebfp x\u00fac \u0111i\u1ec3m lo\u1ea1i 6\u00d719M v\u00e0 6\u00d737M, v\u1ed1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u00edt h\u01a1n \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c n\u00e2ng h\u1ea1 b\u1eb1ng c\u1ea7n c\u1ea9u:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Tham s\u1ed1<\/th><th>Bi\u1ec3u t\u01b0\u1ee3ng<\/th><th>Gi\u00e1 tr\u1ecb (FC, 1770 MPa)<\/th><\/tr><\/thead><tbody><tr><td>H\u1ec7 s\u1ed1 c\u01a1 s\u1edf<\/td><td>k<\/td><td>0.053<\/td><\/tr><tr><td>\u0110i\u1ec1u ch\u1ec9nh \u0111i\u1ec3m<\/td><td>k_i<\/td><td>0,053 \u00b1 0,003 \u00d7 i (\u0111\u1ed1i x\u1ee9ng, kh\u00f4ng c\u00f3 th\u00eam -0,001)<\/td><\/tr><tr><td>H\u1ec7 s\u1ed1 tr\u1ecdng l\u01b0\u1ee3ng (FC)<\/td><td>w1<\/td><td>0.35<\/td><\/tr><tr><td>H\u1ec7 s\u1ed1 tr\u1ecdng l\u01b0\u1ee3ng (IWRC)<\/td><td>w2<\/td><td>0.40<\/td><\/tr><tr><td>Dung l\u01b0\u1ee3ng an to\u00e0n (FC)<\/td><td>F<\/td><td>0,053 \u00d7 d\u00b2 (t\u1ea5n)<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u0110\u1ed9 b\u1ec1n c\u1ee7a d\u00e2y c\u00e1p c\u1ea9u lo\u1ea1i B<\/figcaption><\/figure>\n\n\n\n<p><strong>V\u00ed d\u1ee5 cho lo\u1ea1i B, 1570 MPa:<\/strong> k = 0,053 \u2013 (0,003 \u00d7 2) = 0,047.<\/p>\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 20118-2017 \u2014 D\u00e2y c\u00e1p th\u00e9p d\u00f9ng cho m\u1ee5c \u0111\u00edch chung (ngu\u1ed3n tham kh\u1ea3o ch\u00ednh x\u00e1c v\u1ec1 gi\u00e1 tr\u1ecb l\u1ef1c \u0111\u1ee9t t\u1ed1i thi\u1ec3u)<\/li>\n\n\n\n<li>GB\/T 5793-2006 \u2014 \u1ed4 c\u1eafm n\u00eam cho d\u00e2y c\u00e1p th\u00e9p<\/li>\n\n\n\n<li>GB\/T 5976-2006 \u2014 K\u1eb9p d\u00e2y c\u00e1p<\/li>\n<\/ul>\n\n\n\n<p><strong>\u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p:<\/strong> \u0110\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng d\u1ef1a tr\u00ean b\u1ea3ng ti\u00eau chu\u1ea9n GB\/T 20118-2017. Sai s\u1ed1 th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 2% \u0111\u1ed1i v\u1edbi c\u00e1c c\u1ea5u tr\u00fac d\u00e2y th\u1eebng \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c ti\u1ec5n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng \u2014 \u0111\u1ec3 c\u00f3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt k\u1ef9 thu\u1eadt cu\u1ed1i c\u00f9ng, lu\u00f4n lu\u00f4n ki\u1ec3m ch\u1ee9ng d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 \u0111\u1ed9 an to\u00e0n c\u1ee7a d\u00e2y c\u00e1p c\u1ea9u, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y: <a href=\"https:\/\/www.kscranegroup.com\/vi\/posts\/replacement-and-installing-wire-rope-on-crane\/\">Thay th\u1ebf v\u00e0 l\u1eafp \u0111\u1eb7t d\u00e2y c\u00e1p tr\u00ean c\u1ea7n c\u1ea9u: Nh\u1eefng c\u00e2n nh\u1eafc v\u00e0 m\u1eb9o ch\u00ednh \u0111\u1ec3 c\u00f3 \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i<\/a><\/p>","protected":false},"excerpt":{"rendered":"When you are on a job site or in a project meeting and someone asks &#8220;what diameter overhead crane wire rope do I need for X tonnes?&#8221;, you may not have GB\/T 20118 or ISO 2408 at hand. This article pres","protected":false},"featured_media":11873,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[189],"posts_tag":[816,801,817,815,121,820,818,814,813,819],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/xmxposts\/11865"}],"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":5,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/xmxposts\/11865\/revisions"}],"predecessor-version":[{"id":11876,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/xmxposts\/11865\/revisions\/11876"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/media\/11873"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/media?parent=11865"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/posts_category?post=11865"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/vi\/wp-json\/wp\/v2\/posts_tag?post=11865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}