{"id":1450,"date":"2020-10-16T08:53:07","date_gmt":"2020-10-16T08:53:07","guid":{"rendered":"https:\/\/pj4iaixa9m.wpdns.site\/?p=1450"},"modified":"2020-10-16T08:53:09","modified_gmt":"2020-10-16T08:53:09","slug":"control-punch-noise","status":"publish","type":"post","link":"https:\/\/www.harslepress.com\/vi\/control-punch-noise\/","title":{"rendered":"C\u00e1ch ki\u1ec3m so\u00e1t ti\u1ebfng \u1ed3n c\u1ee7a c\u00fa \u0111\u1ea5m\uff1f"},"content":{"rendered":"

Ti\u1ebfng \u1ed3n c\u1ee7a c\u00fa \u0111\u1ea5m c\u00f3 t\u00e1c h\u1ea1i l\u1edbn \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y v\u00e0 s\u1ee9c kh\u1ecfe c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh. Ch\u00fang ta h\u00e3y xem l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ki\u1ec3m so\u00e1t ti\u1ebfng \u1ed3n c\u1ee7a m\u00e1y d\u1eadp. Sau \u0111\u00e2y l\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t ti\u1ebfng \u1ed3n cho m\u00e1y d\u1eadp l\u1ed7.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

(1) ngu\u1ed3n \u00e2m thanh<\/strong><\/p>\n\n\n\n

A. B\u1ea3n th\u00e2n c\u00fa \u0111\u1ea5m<\/p>\n\n\n\n

Ki\u1ec3m so\u00e1t ngu\u1ed3n \u00e2m thanh l\u00e0 bi\u1ec7n ph\u00e1p c\u01a1 b\u1ea3n \u0111\u1ec3 gi\u1ea3m ti\u1ebfng \u1ed3n c\u1ee7a m\u00e1y d\u1eadp. Richards \u0111\u1ebfn t\u1eeb V\u01b0\u01a1ng qu\u1ed1c Anh \u0111\u00e3 \u00e1p d\u1ee5ng nghi\u00ean c\u1ee9u l\u00fd thuy\u1ebft v\u1ec1 ti\u1ebfng \u1ed3n va ch\u1ea1m cho m\u00e1y d\u1eadp, c\u00f3 th\u1ec3 gi\u1ea3m ti\u1ebfng \u1ed3n xu\u1ed1ng 30dBA. L\u00fd thuy\u1ebft c\u01a1 b\u1ea3n l\u00e0 \u0111\u1ed9 \u1ed3n c\u1ee7a gia t\u1ed1c b\u1eb1ng m\u1ed9t n\u1eeda \u0111\u1ed9ng n\u0103ng c\u1ee7a m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed b\u1eb1ng nhau do b\u00faa truy\u1ec1n \u0111\u1ed9ng trong chuy\u1ec3n \u0111\u1ed9ng.<\/p>\n\n\n\n

Khi CTO \/ VO t\u0103ng t\u1eeb 1 l\u00ean 10, \u0111\u1ed9 \u1ed3n c\u00f3 th\u1ec3 gi\u1ea3m kho\u1ea3ng 30dBA. C l\u00e0 t\u1ed1c \u0111\u1ed9 \u00e2m thanh, v\u00e0 TO l\u00e0 th\u1eddi gian chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a b\u00faa d\u1eebng l\u1ea1i. VO l\u00e0 t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a b\u00faa \u0111\u1eadp v\u00e0o ph\u00f4i. Vi\u1ec7c gi\u1ea3m ti\u1ebfng \u1ed3n l\u1edbn nh\u01b0 v\u1eady s\u1ebd kh\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c theo b\u1ea5t k\u1ef3 c\u00e1ch n\u00e0o kh\u00e1c. V\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1970, tr\u00ean th\u1ebf gi\u1edbi \u0111\u00e3 xu\u1ea5t hi\u1ec7n m\u1ed9t lo\u1ea1i m\u00e1y d\u1eadp l\u1ed7 servo th\u1ee7y l\u1ef1c m\u1edbi. C\u00fa \u0111\u1ea5m c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng theo c\u00e1c quy t\u1eafc chuy\u1ec3n \u0111\u1ed9ng \u0111\u00e3 \u0111\u1ecbnh tr\u01b0\u1edbc, \u0111i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 ti\u1ebfng \u1ed3n c\u1ee7a m\u00e1y d\u1eadp.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

C\u00f3 m\u1ed9t khe h\u1edf ph\u00f9 h\u1ee3p c\u1ea7n thi\u1ebft gi\u1eefa m\u1ed7i b\u1ed9 ph\u1eadn truy\u1ec1n \u0111\u1ed9ng c\u1ee7a m\u00e1y d\u1eadp l\u1ed7 v\u00e0 c\u1ea5u tr\u00fac. Ch\u1eb3ng h\u1ea1n nh\u01b0 thanh k\u1ebft n\u1ed1i tr\u1ee5c khu\u1ef7u l\u00e0m ch\u1eadm thi\u1ebft b\u1ecb backflush. C\u1ea3i c\u00e1ch thi\u1ebft k\u1ebf quy tr\u00ecnh truy\u1ec1n th\u1ed1ng hi\u1ec7n c\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u d\u1ec5 d\u00e0ng \u0111\u1ed1i v\u1edbi nh\u00e0 m\u00e1y; c\u00e1ch c\u01a1 b\u1ea3n l\u00e0 c\u1ea3i c\u00e1ch qu\u00e1 tr\u00ecnh t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00fa \u0111\u1ea5m. C\u00f3 r\u1ea5t nhi\u1ec1u bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u0111\u1ec3 gi\u1ea3m ti\u1ebfng \u1ed3n c\u1ee7a m\u00e1y d\u1eadp l\u1ed7 v\u1eabn \u0111ang trong giai \u0111o\u1ea1n nghi\u00ean c\u1ee9u th\u1eed nghi\u1ec7m v\u00e0 s\u1ebd c\u00f2n r\u1ea5t l\u00e2u n\u1eefa ch\u00fang m\u1edbi c\u00f3 th\u1ec3 th\u00e0nh th\u1ee5c v\u00e0 ph\u1ed5 bi\u1ebfn \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n

B. Gi\u1ea3m ti\u1ebfng \u1ed3n c\u1ee7a n\u1ea5m m\u1ed1c<\/p>\n\n\n\n

C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf khu\u00f4n m\u1eabu th\u01b0\u1eddng b\u1ecf qua ti\u1ebfng \u1ed3n. L\u1ef1a ch\u1ecdn h\u1ee3p l\u00fd khe h\u1edf ph\u00f9 h\u1ee3p c\u1ee7a khu\u00f4n l\u00f5m v\u00e0 khu\u00f4n l\u1ed3i c\u00f3 th\u1ec3 gi\u1ea3m ti\u1ebfng \u1ed3n 5dBA, thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng l\u1ed3i v\u00e0 thay khu\u00f4n ph\u1eb3ng b\u1eb1ng khu\u00f4n c\u1ea7u thang v\u00e0 khu\u00f4n nghi\u00eang, c\u0169ng gi\u1ea3m ti\u1ebfng \u1ed3n kho\u1ea3ng 5-10dba ho\u1eb7c h\u01a1n. B\u1edfi v\u00ec h\u00ecnh d\u1ea1ng h\u00ecnh h\u1ecdc c\u1ee7a ph\u00f4i \u0111\u00f4i khi r\u1ea5t ph\u1ee9c t\u1ea1p, n\u00f3 mang l\u1ea1i m\u1ed9t s\u1ed1 kh\u00f3 kh\u0103n cho qu\u00e1 tr\u00ecnh gia c\u00f4ng khu\u00f4n. Ngo\u00e0i ra, c\u00f3 th\u00eam b\u1ed9 \u0111\u1ec7m trong khu\u00f4n v\u00e0 gi\u1ea3m ti\u1ebfng \u1ed3n khi d\u1ee1 h\u00e0ng v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p kh\u00e1c.<\/p>\n\n\n\n

(2) Ki\u1ec3m so\u00e1t ti\u1ebfng \u1ed3n c\u1ee7a \u0111\u01b0\u1eddng lan truy\u1ec1n<\/strong><\/p>\n\n\n\n

\u0110\u1ec3 ki\u1ec3m so\u00e1t t\u00e1c h\u1ea1i c\u1ee7a ti\u1ebfng \u1ed3n c\u00fa \u0111\u1ea5m \u0111\u1ed1i v\u1edbi c\u01a1 th\u1ec3 con ng\u01b0\u1eddi, th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t trong c\u00e1ch truy\u1ec1n t\u1ea3i, c\u1ea3i ti\u1ebfn k\u1ef9 thu\u1eadt t\u01b0\u01a1ng \u0111\u1ed1i thu\u1ea7n th\u1ee5c v\u00e0 c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ecbnh.<\/p>\n\n\n\n

A. H\u1ea5p th\u1ee5 \u00e2m thanh v\u00e0 gi\u1ea3m ti\u1ebfng \u1ed3n<\/p>\n\n\n\n

M\u1ee5c \u0111\u00edch c\u1ee7a ti\u00eau \u00e2m l\u00e0 l\u00e0m suy y\u1ebfu \u00e2m thanh ph\u1ea3n x\u1ea1 trong nh\u00e0 x\u01b0\u1edfng. N\u00f3 th\u01b0\u1eddng l\u00e0m gi\u1ea3m ti\u1ebfng \u1ed3n kho\u1ea3ng 6dBA.<\/p>\n\n\n\n

B. C\u00e1ch \u00e2m c\u1ee5c b\u1ed9<\/p>\n\n\n\n

S\u1eed d\u1ee5ng m\u00e0n h\u00ecnh c\u00e1ch \u00e2m v\u00e0 l\u1edbp ph\u1ee7 c\u00e1ch \u00e2m khu v\u1ef1c khu\u00f4n v\u1edbi kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u00e2m thanh c\u00f3 th\u1ec3 gi\u1ea3m ti\u1ebfng \u1ed3n 8dBA.<\/p>\n\n\n\n

C. V\u1ecf b\u1ecdc \u00e2m thanh ho\u00e0n to\u00e0n k\u00edn<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Hi\u1ec7u qu\u1ea3 gi\u1ea3m ti\u1ebfng \u1ed3n c\u1ee7a t\u1ea5m ch\u1eafn \u00e2m thanh \u0111\u00f3ng ho\u00e0n to\u00e0n l\u00e0 kho\u1ea3ng 20dBA. Th\u00e2n n\u1eafp c\u00f3 th\u1ec3 l\u00e0 lo\u1ea1i l\u1eafp r\u00e1p, nh\u00ecn chung chi\u1ebfm di\u1ec7n t\u00edch l\u1edbn.<\/p>\n\n\n\n

Ti\u1ebfng \u1ed3n c\u00fa \u0111\u1ea5m \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf trong \u0111\u01b0\u1eddng truy\u1ec1n, nh\u01b0ng n\u00f3 \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 v\u1eadn h\u00e0nh, v\u00e0 c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 gi\u1ea3m ti\u1ebfng \u1ed3n t\u1ed1t h\u01a1n, v\u00ec v\u1eady n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u h\u01a1n. M\u1ecdi ng\u01b0\u1eddi c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn v\u1eadn h\u00e0nh, b\u1ea3o tr\u00ec v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 kh\u00e1c trong qu\u00e1 tr\u00ecnh \u00e1p d\u1ee5ng. M\u1eb7c d\u00f9 b\u1ea3n th\u00e2n v\u1ea5n \u0111\u1ec1 ti\u1ebfng \u1ed3n c\u1ee7a m\u00e1y c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 gi\u1ea3i quy\u1ebft ngay l\u1eadp t\u1ee9c, nh\u01b0ng v\u1eabn c\u00f3 nhi\u1ec1u bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t d\u00e0nh cho \u0111\u01a1n v\u1ecb s\u1eed d\u1ee5ng m\u00e1y \u0111\u1ed9t. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 r\u1ea5t kh\u00f3 \u0111\u1ec3 gi\u1ea3i quy\u1ebft thi\u1ec7t h\u1ea1i c\u1ee7a ti\u1ebfng \u1ed3n \u0111\u1ea5m, \u0111i\u1ec1u c\u1ed1t y\u1ebfu l\u00e0 ph\u1ea3i th\u1ea5y t\u1ea7m quan tr\u1ecdng c\u1ee7a l\u00e3nh \u0111\u1ea1o.<\/p>","protected":false},"excerpt":{"rendered":"

Punch noise has a great harm to the operation of the machine and health of operators. Let\u2019s see how to<\/p>","protected":false},"author":4,"featured_media":1454,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[520,519,217],"class_list":["post-1450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-punching-machine","tag-press-noise-control","tag-punch-machine","tag-punch-noise"],"jetpack_featured_media_url":"https:\/\/www.harslepress.com\/wp-content\/uploads\/2020\/10\/415ed5fbdebef2806ce0ce1385a0fab.png","_links":{"self":[{"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/posts\/1450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/comments?post=1450"}],"version-history":[{"count":0,"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/posts\/1450\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/media\/1454"}],"wp:attachment":[{"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/media?parent=1450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/categories?post=1450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.harslepress.com\/vi\/wp-json\/wp\/v2\/tags?post=1450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}