Raws li ib qho ntawm cov cuab yeej nqa tseem ceeb hauv kev lag luam thiab kev tsim kho, choj crane plays lub luag haujlwm tsis tuaj yeem hloov. Qhov tseeb, txoj hauv kev ua haujlwm ntawm tus choj crane kuj yooj yim heev. Nws feem ntau muaj thiab ua haujlwm tsuas yog peb lub tshuab yooj yim: levers, pulleys thiab hydraulic cylinders. Tom ntej no, tsab xov xwm no yuav qhia txog lub hauv paus ntsiab lus ua haujlwm thiab kev ua haujlwm ntawm cov nyiaj siv ua haujlwm crane kom ntxaws.
Terminology rau BCov cranes
Axial load - tag nrho ntsug quab yuam ntawm cov qauv kev txhawb nqa ntawm jib crane
Lub thawv seem - ib qho duab plaub ntawm kev sib tshuam ntawm kab teeb, tsheb thauj khoom, lossis lwm yam khoom
Trailing brake - xauv qhov system uas tsis tas yuav tsum tau quab yuam kom muab braking
Cov pov thawj tawg - ua los ntawm cov ntaub ntawv pov thawj tawg
Boom Lower Height (HUB) - Qhov deb ntawm hauv pem teb mus rau sab qis ntawm lub boom
Lifting peev - siab tshaj lifting load ntawm crane
Lifting ceev - qhov ceev ntawm lub lifting mechanism nqa lub load
Kev khiav hauj lwm ceev - ceev ntawm crane mechanism thiab trolley
Span - qhov kev ncua deb ntawm qhov nruab nrab ntawm lub log ntawm ob qho kawg ntawm lub ntsiab nqaj
Ob qhov thaiv - thaum lub thauj khoom dai ntawm tus nuv yog daig ntawm lub crane
Web phaj - lub phaj uas txuas rau sab sauv thiab sab flanges ntawm lub nqaj mus rau lub vev xaib.
Log Load - Qhov hnyav uas ib lub log crane yuav dais (hauv phaus)
Kev Ua Haujlwm - txiav txim siab los ntawm tus nqi thauj khoom, uas tuaj yeem yog lub teeb, nruab nrab, hnyav, lossis hnyav hnyav
Tsav Tsheb ntawm Choj Crane
Cov cuab yeej tsav tsheb yog cov cuab yeej hluav taws xob uas tsav lub tshuab ua haujlwm. Cov khoom siv tsav tsheb dav dav suav nrog kev tsav hluav taws xob, lub tshuab hluav taws xob sab hauv hluav taws xob, kev tsav tsheb, thiab lwm yam. Lub zog hluav taws xob yog lub zog huv thiab kev txuag hluav taws xob, thiab hluav taws xob tsav yog txoj kev tsav tsheb tseem ceeb rau niaj hnub cranes.
Ua hauj lwm Mechanism ntawm Choj Crane
Lub tshuab ua haujlwm ntawm ib qho nyiaj siv ua haujlwm crane suav nrog lub tshuab nqa thiab lub tshuab khiav.
1. Lub tshuab nqa yog lub tshuab ua kom tiav ntsug nqa cov khoom, yog li nws yog qhov tseem ceeb tshaj plaws thiab yooj yim mechanism rau cranes.
2. Cov txheej txheem kev khiav hauj lwm yog ib qho kev ua haujlwm uas horizontally thauj khoom los ntawm crane lossis nqa trolley, uas tuaj yeem muab faib ua kev tsheb ciav hlau thiab kev ua haujlwm tsis ua haujlwm.
Lub taub hau CranePickup Device
Cov khoom nqa khoom yog ib qho khoom siv uas txuas cov khoom mus rau lub crane los ntawm tus nuv. Siv ntau hom khoom nqa khoom raws li hom, daim ntawv, thiab qhov loj ntawm cov khoom raug tshem tawm. Cov cuab yeej tsim nyog tuaj yeem txo cov haujlwm ntawm cov neeg ua haujlwm thiab txhim kho kev ua haujlwm zoo. Cov kev cai yooj yim rau kev tiv thaiv lub winch los ntawm kev poob thiab ua kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm thiab cov khoom siv tsis muaj kev puas tsuaj rau lub winch.
Overhead Traveling Crane Control System
Feem ntau yog tswj los ntawm lub tshuab hluav taws xob los tswj tag nrho kev txav ntawm crane mechanism rau ntau yam haujlwm.
Feem ntau cov choj cranes pib ua haujlwm ntsug lossis kab rov tav tom qab khaws cov cuab yeej nqa, tshem tawm ntawm qhov chaw, khoob qhov kev mus rau qhov chaw txais, ua kom tiav lub voj voog ua haujlwm, thiab tom qab ntawd txuas ntxiv nqa thib ob. Feem ntau, lifting machinery ua cov khoom extraction, tuav, thiab unloading ua hauj lwm nyob rau hauv ib ntus, nrog rau cov mechanisms ua hauj lwm intermittently. Lifting machinery feem ntau yog siv los tuav ib yam khoom ntawm cov khoom. Nruab nrog cov thoob khib nyiab, nws tuaj yeem tuav cov khoom xoob xws li thee, ore, thiab nplej. Nruab nrog cov thoob, nws tuaj yeem nqa cov khoom ua kua xws li hlau. Qee lub tshuab nqa, xws li elevators, kuj siv tau los nqa tib neeg. Qee qhov xwm txheej, cov khoom nqa nqa kuj tseem yog lub tshuab ua haujlwm tseem ceeb, xws li kev thauj khoom thiab thauj khoom ntawm cov chaw nres nkoj thiab chaw nres tsheb.
