Cov lus piav qhia ntxaws ntawm Steel Structure Bolt Connections

Steel qauv bolts Qhov sib txawv ntawm qhov sib txawv ntawm cov cuab yeej cuab tam zoo tib yam hauv cov ntaub ntawv sib txuas, cov txheej txheem quab yuam thiab kev tsim kho. Raws li cov qib kev ntxhov siab, cov kev pabcuam thiab cov qauv tsim, kev sib txuas hauv steel qauv engineering feem ntau muab faib ua ob pawg: kev sib txuas bolt zoo tib yam thiab kev sib txuas ntawm lub zog siab. Txhua hom kev sib txuas sib txawv heev hauv qhov yuav tsum tau ua, txoj kab uas hla ntawm lub qhov, cov qauv kev quab yuam thiab cov xwm txheej siv tau.

1. Ib qho yooj yim Bolt txuas

Ordinary bolts tau muab faib ua peb qib precision A, B thiab C raws li kev tsim khoom raug. Qib A thiab B yog cov ntsia hlau ua kom zoo, thaum Qib C yog cov ntsia hlau ntxhib. Tshwj tsis yog tias tau teev tseg, Qib C ntxhib bolts tau txais los ntawm lub neej ntawd rau kev sib txuas ua ke hauv kev tsim cov qauv hlau. Nyob rau hauv cov nqe lus ntawm cov duab thiab cov qauv, zoo tib yam bolts muaj xws li hexagon taub hau bolts, ob-kawg bolts, countersunk taub hau bolts thiab lwm yam.

Qib C ntxhib bolts feature tsawg machining raug thiab loj phab ntsa clearance. Lawv feem ntau yog siv rau kev sib sau ua ke ntawm steel qauv kev cob qhia, pre-tightening ntawm riveted Cheebtsam, ib ntus positioning thiab kho ua ntej lub formal installation ntawm high-strength bolts, thiab ib ntus fixation ua ntej node welding. Thaum siv los ua bolts ruaj, lawv yuav tsum tau nruj nruj tom qab cov khoom sib dhos, nrog kev txhim khu kev ruaj ntseg los tiv thaiv kev xoob los tiv thaiv kom tsis txhob xoob thiab offset thaum tsim kho.

1.1 Refined Bolts (Qib A / B)

Refined boltsmuaj siab machining raug, me me ntsia hlau kam rau ua thiab tsawg los ua ke clearance, ua tau ib tug nruj haum ntawm cov ntsia hlau pas nrig thiab ntsia liaj qhov rooj qhov. Lawv muaj cov kev cai nruj heev rau lub qhov ua precision thiab ntsia hlau pas nrig machining raug thiab yuav tsum tau zaum los ntawm maj mam tapping es tsis txhob hnyav knocking thaum lub sij hawm installation. Refined bolts yog tsim rau precision structural kev sib txuas uas yuav tsum tau nquag disassembly thiab sib dhos los yog tsis muaj peev xwm ntawm riveting. Lawv feem ntau yog siv rau hauv cov cuab yeej siv tshuab sib dhos thiab tsis tshua siv los tsim cov qauv hlau.

2. High-Strength Bolt Txuas Txuas

Raws li cov qauv tsim qauv, lub zog muaj zog bolts rau cov qauv hlau tau muab faib ua kev sib txhuam-hom thiab bearing-type. Ob hom yog zoo ib yam nyob rau hauv cov khoom, specification thiab mechanical zog, sib txawv tsuas yog nyob rau hauv tsim slip tswj cov txheej txheem thiab tsis ua hauj lwm kev txiav txim mechanisms. Nyob rau hauv cov nqe lus ntawm cov qauv qauv, lawv tau muab faib ua hexagon high-strength bolts thiab torshear hom high-strength bolts.

2.1 Kev sib txhuam-hom High-Strength Bolt txuas

Kev sib txhuam-hom high-strength bolts compact txuas daim hlau los ntawm bolt pre-tension quab yuam thiab hloov lwm yam loads los ntawm kev sib txhuam zoo li qub generated rau ntawm qhov chaw ntawm cov hlau phaj. Tsis pub plam ntawm qhov sib txuas sib txuas, thiab cov bolts tsis muaj zog shear. Ib qho plam ntawm lub phaj saum npoo yog txiav txim raws li kev sib txuas tsis ua haujlwm. Txhawm rau txhim kho qhov kev sib txhuam coefficient, qhov sib cuag ntawm cov khoom siv hlau tuaj yeem raug kho los ntawm cov xuab zeb blasting thiab txhaj tshuaj blasting los ua ib qho kev sib txhuam tsis sib xws, uas ua rau kev ua haujlwm tsis zoo thiab ua kom zoo dua cov ntsia hlau. Kev sib dhos lub qhov taub ntawm kev sib txhuam-hom high-strength bolts yog 1.5mm txog 2.0mm loj dua lub nominal bolt txoj kab uas hla.

2.2 Cov Kabmob-hom High-Strength Bolt Txuas

Bearing-type high-strength bolts hloov loads nyob rau ntawm phaj nto kev sib txhuam nyob rau hauv ib txwm ua hauj lwm tej yam kev mob. Thaum lub load tshaj qhov kev sib txhuam bearing muaj peev xwm, me me kev sib tw npleem yog tso cai, thiab cov kev ntxhov siab yog sib koom ua ke thiab pauv los ntawm shear tsis kam ntawm bolt rods thiab bearing siab ntawm phaj qhov phab ntsa. Nws txoj kev ua tsis tiav yog ua raws li cov bolts zoo tib yam, uas yog bolt shear tsis ua haujlwm lossis steel phaj bearing crushing tsis ua haujlwm. Qhov sib dhos lub qhov taub ntawm cov kabmob-hom siab-lub zog bolts yog 1.0mm txog 1.5mm loj dua lub nominal bolt txoj kab uas hla. CNC drilling tshuab thiab laum jigs yog qhov tseem ceeb rau qhov tseeb qhov drilling kom paub meej qhov chaw raug.

Cov ntsiab lus sib txawv ntawm ob hom kev siv lub zog muaj zog: Kev sib txhuam-hom bolts txais cov qauv tsim tsis muaj kev cuam tshuam nrog kev nyab xeeb dua thiab ruaj khov, haum rau cov qauv hauv qab vibration load, dynamic load thiab loj load-bearing tej yam kev mob; bearing-type bolts tso cai txwv tsis pub dhau thiab muaj peev xwm ntau dua cov kabmob, muaj feem xyuam rau cov qauv thauj khoom zoo li qub.

2.3 Loj Hexagon High-Strength Bolt Assembly

Kev ua tiav loj hexagon high-strength bolt sib dhos muaj xws li ib lub taub hau muaj zog, ib lub txiv ntoo thiab ob lub tshuab ntxhua khaub ncaws.

Ua ntej kev tsim kho, cov bolts ntxhib yog siv rau kev kho ib ntus thiab ua kom zoo ntawm cov khoom. Tom qab calibration, cov bolts ntxhib nyob rau hauv cov ntsia liaj qhov rooj pab pawg neeg yog hloov nrog high-strength bolts raws li nram no los ntawm qhov chaw mus rau ob sab, ua raws li los ntawm thawj zaug zawm, rov zawm thiab zaum kawg zawm. Ib lub tshuab ntxhua khaub ncaws yuav tsum tau nruab rau ntawm txhua sab ntawm tus ntsia liaj qhov rooj thaum sib dhos.

Kev tsim kho torque qauv: thawj zaug zawm torque yog 50% ntawm qhov kawg zawm torque; Qhov rov ua kom nruj torque yog sib npaug rau qhov kawg zawm torque, uas tshem tawm cov kev sib dhos sib dhos thiab ua kom lub ntsej muag ua ntej nro quab yuam. Cov mis laij lej rau qhov kawg nruj torque: Tc=K × Pc ×d. Qhov twg: Tc=zaum kawg zawm torque (N·m); K=torque coefficient; Pc=kev tsim kho ua ntej nro quab yuam (kN); d=nominal bolt txoj kab uas hla (mm). Torque wrenches yuav tsum tau ntsuas ua ntej txhua qhov kev siv los lav kev tsim kho qhov tseeb.

2.4 Torshear Type High-Strength Bolt Assembly

Ib hom torshear tiavsiab zog bolt Lub rooj sib txoos yog tsim los ntawm ib lub torshear ntsia liaj qhov rooj, ib lub txiv ntoo thiab ib lub tshuab ntxhua khaub ncaws, tsuas yog ib lub tshuab ntxhua khaub ncaws ntsia rau ntawm cov txiv ntoo es tsis txhob siv ob tog ntxhua khaub ncaws.

Cov qauv kev suav rau thawj zaug zawm torque: Tc=0.065 × Pc ×d. Qhov twg: Tc=pib zawm torque (N·m); Pc=kev tsim ua ntej nro quab yuam (kN); d=nominal bolt txoj kab uas hla (mm). Ib tug tshwj xeeb torshear wrench yog saws rau zaum kawg zawm, uas yog ua tiav thaum lub plum blossom tail ntawm lub bolt kawg yog twisted tawm. Torshear bolts feature siab kev tsim kho kom zoo, nrog kev saib xyuas zoo tsom rau tag nrho cov txheej txheem tshuaj xyuas thiab kev tswj cov txheej txheem.