Cov yam ntxwv ua haujlwm ntawm lub crane yog qhov sib cuam tshuam, uas yog, cov txheej txheem sib txuas rau kev rov qab, thauj thiab tshem tawm hauv lub voj voog ua haujlwm ua haujlwm sib hloov.Txhua lub tshuab yog feem ntau nyob rau hauv lub xeev ua hauj lwm ntawm pib, braking thiab khiav nyob rau hauv lub zoo thiab tsis zoo cov lus qhia.
(1) Kev faib tawm ntawm cov tshuab hoisting
1. Raws li kev nqa khoom, nws tuaj yeem muab faib ua: cov tshuab nqa yooj yim thiab cov cuab yeej: xws li Jack (rack, ntsia hlau, hydraulic), rub lub thaiv, hoist (phau ntawv, hluav taws xob), winch (phau ntawv, hluav taws xob, hydraulic), dai monorail, thiab lwm yam;Cranes: mobile cranes, ntauwd cranes thiab mast cranes feem ntau siv nyob rau hauv hluav taws xob mechanical engineering.
2. Raws li cov qauv tsim, nws tuaj yeem muab faib ua: choj hom (bridge crane, gantry crane);Hom kab;Boom hom (tus kheej-propelled, ntauwd, portal, railway, floating nkoj, mast crane).
(2) Daim ntawv thov ntawm hoisting machinery
1. Mobile crane: muaj feem xyuam rau lub hoisting ntawm cov khoom loj thiab nruab nrab thiab cov khoom siv nrog qhov hnyav ib leeg, nrog rau lub voj voog ua haujlwm luv.
2. Ntauwd crane;Nws muaj feem xyuam rau lub hoisting ntawm cov khoom, cov khoom siv (cov khoom siv) nrog cov khoom loj nyob rau hauv qhov kev ua haujlwm thiab qhov hnyav me me ntawm txhua daim, nrog rau kev ua haujlwm ntev.
3. Mast crane: nws yog tsuas yog siv tau rau lub hoisting ntawm qee qhov hnyav ntxiv, siab ntxiv thiab qhov chaw muaj kev txwv tshwj xeeb.
(3) Cov yam ntxwv tseem ceeb ntawm kev xaiv crane
Nws feem ntau suav nrog kev thauj khoom, ntsuas kev nqa lub peev xwm, qhov siab tshaj plaws amplitude, siab tshaj plaws nqa qhov siab, thiab lwm yam.
1. Thauj khoom
(1) Dynamic load.Nyob rau hauv tus txheej txheem ntawm nqa cov khoom hnyav, lub crane yuav tsim inertial load.Kev lig kev cai, qhov inertial load yog hu ua dynamic load.
(2) Unbalanced load.Thaum ntau cov ceg ntoo (ntau lub cranes, ntau txheej ntawm rub lub blocks, ntau lub slings, thiab lwm yam) nqa ib qho khoom hnyav ua ke, vim muaj cov yam ntxwv ntawm kev ua haujlwm asynchronous, txhua ceg feem ntau tsis tuaj yeem nqa tag nrho cov khoom raws li qhov kev faib ua feem.Nyob rau hauv lifting engineering, lub cawv muaj nyob rau hauv lub unbalanced load coefficient.
(3) xam cov load.Nyob rau hauv kev tsim ntawm hoisting engineering, thiaj li yuav coj mus rau hauv tus account lub zog ntawm dynamic load thiab unbalanced load, lub xam load feem ntau yog siv los ua lub hauv paus rau hoisting xam thiab cable thiab spreader chaw.
2. Rated lifting muaj peev xwm
Tom qab txiav txim siab lub vojvoog tig thiab nqa qhov siab, lub crane tuaj yeem nqa qhov hnyav.Qhov ntsuas lifting muaj peev xwm yuav tsum siab tshaj qhov xam load.
3. Qhov siab tshaj plaws amplitude
Qhov siab tshaj plaws hoisting slewing vojvoog ntawm lub crane, piv txwv li lub hoisting slewing vojvoog nyob rau hauv qhov ntsuas hoisting muaj peev xwm.
Post lub sij hawm: Oct-30-2021