1. Txiav txim siab daim ntawv thov Scenario & Load Requirements
Thawj kauj ruam hauv kev xaiv cov txiv ntoo yog qhia meej txog nws qhov kev siv, vim qhov no ncaj qha txiav txim siab lub peev xwm thauj khoom, kev tiv thaiv corrosion, thiab kav ntev yuav tsum tau ua. Rau thoob cov hniav thiab kev siv tshuab hnyav, tsom rau cov hauv qab no:
Load Hom: Yog tias cov txiv ntseej siv rau kev sib txuas ntawm cov hniav sib txuas (yuav ua rau muaj kev cuam tshuam ntau zaus, kev vibration, thiab shear force), xaiv cov txiv ntoo uas muaj zog tensile siab thiab tiv thaiv -loosing kev ua tau zoo. Rau qhov xwm txheej zoo li qub (piv txwv li, qhov chaw pabcuam ruaj khov), cov txiv ntoo txheem yuav txaus.
Ua haujlwm ib puag ncig:
Sab nraum zoov / chaw tsim kho: Cov txiv ntoo xav tau kev tiv thaiv corrosion (tiv thaiv los nag, av, thiab tshuaj lom neeg).
Siab - qhov kub thiab txias: Xaiv cov khoom cua sov- tiv thaiv kom tsis txhob deformation.
Cov chaw ntub dej / ntug hiav txwv: Ua ntej tiv thaiv- kev kho xeb (xws li, galvanization, chrome plating).
Cov Khoom Siv Tau Zoo: Rau cov hniav thoob, xyuas kom cov txiv ntoo sib tw rau cov ntsia liaj qhov rooj uas siv rau hauv cov hniav taw tes thiab cov khoom sib txuas (piv txwv li, cov ntsia hlau loj thiab xov hom CAT, Komatsu, lossis Sany thoob cov hniav).
2. Ua raws li Bolt Specifications
Cov txiv ntseej thiab bolts yuav tsum tau ua kom zoo sib xws kom muaj kev ruaj ntseg zoo. Cov ntsiab lus tseem ceeb sib xws muaj xws li:
Xov Hom: Cov hom feem ntau yog metric (M series, piv txwv li, M8, M10) thiab imperial (UNC/UNF). Xyuas kom cov txiv ntseej cov xov sib npaug ntawm lub ntsia liaj qhov rooj - sib tov metric thiab imperial threads yuav ua rau xoob kev sib txuas lossis kev puas tsuaj.
Xov Pitch: Txawm tias muaj tib lub npe loj, zoo - suab thiab ntxhib - suab xov txawv. Piv txwv li, M10 muaj coarse suab (1.5mm) thiab zoo suab (1.25mm); lub txiv ntoo yuav tsum phim lub bolt lub suab.
Bolt Qib: Cov txiv ntseej yuav tsum muaj qib sib luag rau lub ntsia liaj qhov rooj kom tsis txhob muaj zog tsis sib haum. Rau siab - lub zog bolts (piv txwv li, 8.8, 10.9 qib siv hauv thoob cov hniav), xaiv siab - cov txiv ntseej muaj zog (ib qib lossis siab dua) txhawm rau tiv thaiv cov txiv ntoo los ntawm kev rub tawm hauv qab.
3. Xaiv hom Txiv Ntoo Zoo
Cov txiv ntoo sib txawv muaj cov yam ntxwv tshwj xeeb, haum rau cov xwm txheej sib txawv. Rau thoob cov hniav thiab cov tshuab hnyav, cov hauv qab no feem ntau siv:
3.1 Hexagonal txiv ntseej (Hex txiv ntseej)
Feem ntau siv hom, nrog rau rau sab kom yooj yim zawm nrog ib tug ciaj ntswj. Muaj nyob rau hauv ob hom:
Standard Hex Txiv Ntoo: Haum rau kev sib txuas ntawm cov khoom siv zoo li qub; tus nqi- zoo thiab yooj yim rau nruab.
Thick Hex Txiv Ntoo: Muaj qhov siab ntev dua, siab dua load-cov kabmob muaj peev xwm, thiab kev ruaj ntseg zoo dua- zoo tagnrho rau cov hniav nyiaj hniav kub thiab lwm yam siab - kev vibration, siab - kev siv cuam tshuam.
3.2 Xauv Nut (Anti-Loosen Nut)
Tsim los tiv thaiv kev xoob los ntawm kev co (tseem ceeb rau cov hniav thoob, uas muaj kev cuam tshuam ntau zaus thaum ua haujlwm). Hom hom:
Nylon Insert Lock Nut: Nta lub nplhaib nylon hauv cov txiv ntoo; Thaum nruj, lub nplhaib nias tawm tsam lub bolt xov los tsim kev sib txhuam thiab tiv thaiv kom loosening. Haum rau qhov qis rau nruab nrab vibration scenarios.
Txhua yam -Metal Lock Nut: Siv cov xov deformed lossis hlau ntxhua kom ua tiav los tiv thaiv-loosing. High-kub resistant thiab haum rau hnyav-lub luag hauj lwm, siab- ib puag ncig kev co (xws li, thoob cov hniav hauv mining los yog pob zeb excavation).
3.3 Flange txiv ntseej
Integrate ib lub flange (lub tshuab ntxhua khaub ncaws) hauv qab, tshem tawm qhov xav tau rau lub tshuab ntxhua khaub ncaws ntxiv. Lub flange ua rau cov cheeb tsam sib cuag, faib cov siab, thiab tiv thaiv cov txiv ntoo los ntawm kev nkag mus rau hauv cov khoom siv - zoo tagnrho rau kev sib txuas cov khoom nyias lossis mos hauv cov khoom siv ntawm cov thoob cov hniav.
4. Xaiv cov khoom tsim nyog
Cov khoom siv txiv ntoo ncaj qha cuam tshuam rau nws lub zog, kev tiv thaiv corrosion, thiab kev pabcuam lub neej. Rau thoob cov hniav thiab cov tshuab hnyav, cov khoom siv muaj xws li:
Carbon Steel: Tsawg nqi, siab zog, tab sis tsis zoo corrosion kuj. Haum rau sab hauv tsev, ib puag ncig qhuav lossis kev sib txuas ib ntus. Cov qhab nia: 4.8, 8.8.
Alloy Steel: Ntxiv nrog chromium, molybdenum, lossis npib tsib xee los txhim kho lub zog thiab tawv. High-lub zog alloy steel ceev (10.9, 12.9 qib) yog qhov zoo tagnrho rau cov hniav thoob thiab lwm yam hnyav- daim ntawv thov.
Stainless Hlau: Zoo heev corrosion kuj, haum rau av noo, sab nraum zoov, los yog ntug hiav txwv dej. Cov qib sib xws: 304 (kev tiv thaiv dav dav) thiab 316 (zoo dua corrosion kuj rau qhov hnyav hnyav).
Coated Nuts: Rau kev txhim kho corrosion kuj, xaiv cov txiv ntoo nrog kev kho saum npoo xws li kub-dip galvanization, electroplating, lossis Dacromet. Cov txheej txheem no zoo tagnrho rau cov hniav siv hauv cov chaw tsim kho nrog los nag, av, lossis tshuaj lom neeg.
5. Xav txog yam tseem ceeb ntxiv
Qhov chaw teeb tsa: Yog tias thaj chaw teeb tsa nqaim (xws li, hauv lub thoob cov hniav adapter), xaiv cov txiv ntseej nyias lossis cov txiv ntseej rau kev ua haujlwm yooj yim.
Torque Requirements: Siab - lub zog txiv ntseej yuav tsum muaj lub zog meej thaum lub sijhawm teeb tsa kom ntseeg tau tias kev sib txuas yog nruj yam tsis muaj kev puas tsuaj rau cov xov. Siv lub torque ciaj ntswj kom nruj nruj.
Tus nqi-Kev ua tau zoo: Sib npaug kev ua haujlwm thiab tus nqi. Rau cov uas tsis yog- cov khoom tseem ceeb, cov qauv carbon steel ceev yog txaus; rau thoob cov hniav sib txuas (tseem ceeb rau kev nyab xeeb), nqis peev hauv siab - lub zog, tiv thaiv -loosing ceev kom tsis txhob raug nqi qis.