Nyob rau hauv lub lig 1980s, nrog rau kev loj hlob ntawm txawv teb chaws graded crushing technology,Cov ntxhia pob zeb crushersawv thiab dhau los ua cov cuab yeej crushing tshiab. Cov hniav crushing yog teem nyob rau hauv kauv ntawm cov hniav cov menyuam, thiab cov khoom yog tawg los ntawm rotating parallel hniav chais rau los yog opposite ib leeg. Vim tias cov khoom siv tsuas yog loj dua cov khoom loj ntawm cov khoom crushing, thiab tsawg dua cov khoom loj ntawm cov khoom siv ncaj qha sieve, yog li nws tseem hu ua kev tshuaj ntsuam crusher.mineral sizers crusher ua rau tag nrho cov yam ntxwv uas lub shear thiab tensile lub zog ntawm cov khoom yog deb tsawg tshaj li lub compressive zog, thiab siv lub shear thiab tensile lub zog los rhuav tshem cov khoom.
Yog li ntawd, miner sizers crusher muaj cov yam ntxwv ntawm kev siv hluav taws xob tsawg, me dua - crushing tus nqi, qauv yooj yim, yooj yim txij nkawm thiab lwm yam. Nws yog ib qho ntawm cov khoom siv crushing tseem ceeb hauv ntau qhov loj thee mines thiab qhib -qhov mines hauv Suav teb.
1. Cov teeb meem uas twb muaj lawm ntawm beam crushing ntaus ntawv
Lub 2PGC-1370mineral sizers crusher yog xaiv rau cov nroj tsuag mining. Lub zog hluav taws xob yog 2 × 250kW, txoj kab uas hla ntawm crushing yob yog 1370mm, lub peev xwm ntau lawm yog 2000t / h, qhov siab tshaj plaws pub mis loj yog 1500mm, qhov loj me me yog 300mm, thiab cov khoom siv crushing yog limestone. Tom qab commissioning thiab khiav, lub crushing cov menyuam muaj zoo crushing quab yuam, cov khoom yog occluding smoothly, thiab cov zis yog raws li tus qauv. Txawm li cas los xij, tom qab 3 lub hlis ntawm kev siv, cov bolts ruaj ntawm cov nqaj tawg tau nquag thiab raug hloov ib zaug txhua 1 mus rau 2 lub hlis ntawm qhov nruab nrab. Tom qab ntawd, lub zog ntawm cov ntsia liaj qhov rooj tawg tau hloov ntawm 10.9 mus rau 12.9, thiab lub ntsia liaj qhov rooj tawg dua tom qab siv li ob lub hlis.
1.1 Cov qauv ntawm nqaj crushing ntaus ntawv
Cov ntxhia pob zeb crushermuaj lub cev muaj zog, hydraulic coupler, reducer, toothed coupling, crushing yob, lub thawv thiab crushing beam, thiab nws cov qauv yog qhia nyob rau hauv daim duab 1. Lub Upper cheeb tsam ntawm cov hniav ntawm ob crushing rollers yog thawj theem crushing cheeb tsam. Los ntawm crushing cov menyuam cov hniav occlusion, thawj yog pom tau hais tias, uas yog lub luag hauj lwm rau crushing loj cov ntaub ntawv. Ob qhov chaw ntawm daim duab peb sab ntawm qhov qis crushing yob thiab cov nqaj crushing yog qhov thib ob crushing zones. Qhov thib ob crushing ntawm cov ntaub ntawv tuaj yeem pom tau los ntawm occlusion ntawm crushing yob cov hniav thiab crushing beam hniav. Los ntawm ob qho kev sib tsoo, qhov sib tsoo sib tsoo tuaj yeem ncav cuag li 6: 1, qhov paug tawm qhov loj me yog qhov sib xws.
Cov nqaj tawg yog ib qho tseem ceeb kom paub txog kev sib tsoo thib ob, txhim kho crushing piv thiab tswj particle loj. Cov kab hluav taws xob tawg yog tsim los ntawm lub cev nqaj hlau tawg, cov hniav tawg ntawm cov hniav thiab cov particle loj regulating ntaus ntawv, thiab nws cov qauv yog qhia nyob rau hauv daim duab 2. Cov nqaj tawg yog tsau rau ntawm lub thawv nrog bolts, thiab cov hniav ntawm cov nqaj tawg yog txuas nrog cov nqaj tawg los ntawm ib daim ntawv cog lus tiaj tus thiab tsau nrog bolts. Nrog rau hnav ntawm cov hniav crushing, qhov paug particle loj
Nyob rau hauv cov ntaub ntawv no, lub particle loj tuaj yeem hloov kho los ntawm particle loj hloov kho (saib daim duab 3). Txoj kev hloov kho: Los ntawm kev sib tw lub ntsia liaj qhov rooj ntev, nqa lub nqaj tawg mus rau qhov siab tsim nyog, tom qab ntawd so lub ntsia liaj qhov rooj ntev, ntxiv lub gasket, kho cov nqaj tawg, thiab tom qab ntawd kho nrog cov ntsia liaj qhov rooj. Namely, los ntawm kev txo qhov kev ncua deb ntawm lub crushing roller thiab crushing beam crushing chamber kom them nyiaj rau cov crushing hniav coj tus nqi, thiaj li ua tau raws li cov txheej txheem particle loj dua.
1.2 Tshawb xyuas lub zog ntawm bolts
Nyob rau hauv kev saib ntawm lub bolts ruaj khov, nws yog suav hais tias yog qhov tawg beam yog tshwm sim los ntawm lub zog ntau dhau. Lub ntsia liaj qhov rooj txais M36 siab - lub zog ntsia liaj qhov rooj. Txhawm rau tiv thaiv cov nqaj tawg los ntawm kev xoob, ib qho loj ua ntej- zawm quab yuam Fo=350000N raug xaiv. Daim duab quab yuam ntawm lub nqaj tawg yog qhia hauv daim duab 4.
Kev ntsuam xyuas kev ntxhov siab tau ua rau ntawm cov hniav ntawm cov hniav crushing.
Qhov twg: T yog crushing yob torque, N·m; T yog qhov rov qab torque ntawm cov nqaj tawg ntawm cov hniav, Nm; N yog lub cev muaj zog; N=250 kw. n yog qhov ceev ntawm crushing yob, n=24r/min; k yog qhov tseem ceeb tshaj ntawm lub sijhawm cuam tshuam, uas yog 1.5; F yog lub zog tangential ntawm cov nqaj tawg ntawm cov hniav, N; D yog txoj kab uas hla ntawm crushing yob, uas yog 1.37m.
Tom qab ntawd lub shear stress ntawm bolt yog soj ntsuam.
Qhov twg, F. Yog kab rov tav shear quab yuam ntawm lub bolt, N; F' yog cov tshuaj tiv thaiv F, N; a yog tus hniav inclination Lub kaum sab xis ntawm lub nqaj tawg, a =30℃; r yog kab rov tav shear kev nyuaj siab ntawm lub bolt; d1 yog M36 bolt txoj kev, d1=0.03166m; [r] yog qhov tso cai shear stress ntawm bolt, uas yog 210MPa; [o-1 yog tus nqi tso cai ntawm alternating stress of bolt, uas yog 350MPa.
Cov txiaj ntsig ntawm kev suav qhia tau hais tias kab rov tav shear kev nyuaj siab ntawm cov ntsia liaj qhov rooj ruaj khov yog ntau dua li qhov tso cai rau kev ntxhov siab, uas ua rau cov ntsia hlau tawg. Nyob rau hauv txoj kev ntsug, vim muaj ntsug ntxiv quab yuam F ntawm lub ntsia liaj qhov rooj. Contrary to the direction of bolt pretightening force Fo, tag nrho tensile stress yuav tsawg dua lub pretightening quab yuam, yog li nws tsis yog xam.
2 Kev txhim kho ntsuas ntsia hlau
Tom qab lub ntsia liaj qhov rooj tawg, yog tias nws tsis kho raws sijhawm, cov nqaj tawg yuav raug tshem tawm, thiab cov hniav ntawm cov crushing yob thiab cov hniav ntawm cov nqaj hlau crushing yuav cuam tshuam rau ib leeg, ua rau muaj kev hnav ntau dhau thiab txawm tias tawg ntawm cov hniav ntawm crushing yob. Yog li ntawd, thaum ntsib refractory los yog cov ntaub ntawv tuab, lub mine yuav tsum tau ceev faj ntxiv. Thaum lub sijhawm thauj khoom tam sim no loj dua me ntsis, qhov pub ceev yuav tsum raug txo tam sim ntawd lossis lub tshuab yuav tsum raug kaw. Cov bolts yuav tsum tau kuaj xyuas txhua hnub, thiab cov teeb meem yuav tsum tau hloov raws sijhawm.
Muaj ntau txoj hauv kev tau sim los daws qhov teeb meem no, tab sis qhov yooj yim, siv tswv yim wedge- kho txoj kev raug xaiv, raws li pom hauv daim duab 5.
Siv qhov chaw hauv lub thawv qub, ntxiv cov ncej txhawb nqa thiab cov kab hlau txuas ntawm ob qho kawg ntawm lub thawv. Lub mating nto ntawm lub npoo hlau thiab cov ncej txhawb nqa yog 1:12 inclined, thiab me me inclination yog saws. Tom qab lub wedge yog nruj, nws yog ntau txhim khu kev qha thiab tsis yooj yim rau xoob. Cov ncej txhawb nqa tau ruaj khov rau hauv lub thawv, thiab cov npoo hlau yog siv los sib npaug ntawm cov nqaj tawg thiab cov ncej txhawb nqa. Tom qab cov bolts tau ruaj khov, cov hlau wedge yog qhov chaw welded rau cov ncej txhawb nqa. Thaum qhov loj me me yuav tsum tau hloov kho, nws tsuas yog yuav tsum tau zom qhov chaw vuam ntawm lub npoo, tsa lub nqaj tawg, thiab tom qab ntawd muab cov kab nrib pleb thiab ntsia hlau rau ntawm qhov kho qhov ntsia hlau tom qab re-leveling. Cov qauv wedge ua rau tag nrho siv cov npoo hlau los dais kab rov tav tawg quab yuam, thiab cov ntsia liaj qhov rooj ruaj khov tsuas yog raug rau lub zog ntsug, tsis muaj kab rov tav shear quab yuam, uas zoo heev txhim kho kev ntseeg siab ntawm bolt kev twb kev txuas.
3 Siv cov nyhuv
Tom qab kev hloov kho, cov nqaj tawg tau taug qab li 2 mus rau 3 lub hlis txhawm rau txheeb xyuas cov nqaj tawg thiab 4 kho cov bolts, thiab tsis pom cov cim ntawm kev xoob. Nws tau siv ib txwm siv rau 2 xyoos yam tsis muaj qhov tawg. Lub mine tsis tas yuav niaj hnub tshawb xyuas bolts txhua hnub, uas txo cov kev siv zog ntawm cov neeg ua haujlwm. Thaum cov cuab yeej ntsib cov ntaub ntawv nyuaj lossis ntom ntom, nws tuaj yeem hla tau zoo yam tsis muaj lub tshuab nres. Kev siv cov cuab yeej siv tau zoo heev, thiab cov khoom tsim tawm ib teev tau nce li ntawm 30% piv nrog ua ntej. Lub peev xwm crushing muaj peev xwm thiab cov nqi ua tau zoo txawm tias siab dua li cov khoom siv crushing tuaj txawv teb chaws.
4 Kev xaus
Thaum cov ntxhia sizers crusher yog crushing limestone, lub beam crushing ntaus ntawv yog yooj yim puas nyob rau hauv qhov kev txiav txim ntawm loj heev cuam tshuam quab yuam. Los ntawm kev ntxiv cov txheej txheej txheej txheej los tiv thaiv txoj kab rov tav crushing quab yuam, lub ntsia liaj qhov rooj ruaj khov yog zam los ntawm kev ua haujlwm shear, uas ua tiav cov teeb meem ntawm kev sib tsoo bolts thiab txhim kho kev siv cov khoom siv. Lub wedge mechanism tseem tuaj yeem muab qee qhov kev siv rau kev kho cov khoom siv kho tshuab nyuaj hauv lwm qhov kev lag luam.