
bulldoser

bulldoser kinwa doser (jyala croller dekhil mhanatat) heey eka mothe, motoryukt yantra aahe jeey bandhkamadarmyan maatee, valoo, burf, dhigaaon kinwa khadak asha samagreela pudhe dhakalanyasathi dhatuchya blades susajj aahe. jaree mothya margavar swar honare vishesh model dekhil tayar kele jaat asale taree teey samanyatah satatchya marganvar pravas karate. tyachi sarvat lokpriy upkarane mhanje eka ripper, eka mothe huksarkhe upkaran jeey ghandat sahitya sail karnyasathi ektyane kinwa mageel bajus gunankat basavale jaate. 
bulldozercha mothya aanee chhotya pramanavar bandhkam, raste bandhani, khankam aanee utkhanan, shetanvar, avjad udhyoganchya karkhanyanmadhye aanee shantata aanee yuddhakal yaa donhi kalat lashkari vaparat mothya pramanat vapar keela jaato.
bulldoser' haah shabd keval dhakalanyasathi tayar kelelya blades basavalelya motoryukt unitcha sandarbh deto. haah shabd kadhikadhi itar judd upkaranansathi chukichya paddhatine vaparla jaato, jase qee samagri dhakalanyaivaji vahoon nenyasathi tayar kelelya front-end lodersathi. hii sandnya mulat keval blade jodanisathi sandarbhit hotee parantu aata samanyatah samore asalelya blades konatyahi croller tractorla lagoo kelee jaate.
varnan.
samanyatah, bulldoser hii mothee aanee shaktishali track keleli judd upkarane asatat. heey marg tyanna atishay khadkal bhupradeshatun utkrusht karshan aanee gatishilata detat. rund marg vahanache vajan mothya kshetravar (jaminivaril daab qamee karane) vitareet karnyas dekhil madat karatat, jyamule teey valukamay kinwa chikhalyukt jaminivar budnyapasun rokhate. atirikt-rund marganna daldaliche marg kinwa qamee jaminivaril daab (ell. jee. pii.) marg mhanoon olakhale jaate. bulldozermadhye track pranalicha fayda ghenyasathi aanee utkrusht tractive force pradan karnyasathi tayar kelelya pareshan pranali asatat.
hii vaishishtye bulldozerla raste bandhani, bandhkam, khankam, vanikaran, jameen saaf karane, payabhoot suvidha vikas aanee atyant gatishil, shaktishali aanee sthir pruthvi-halvinari upkarane aavashyak asalelya itar konatyahi prakalpanmadhye utkrusht kamgiri karnyas anumati detat.
eka prakar mhanje serve chakanni chalanare chaak asalele bulldoser, jyamadhye samanyatah rabarane thakoon gelelya chaar mothya chakancha, hydraulically operate kelelya articulated steeringcha aanee articulation jointchya pudhe hydraulically actuated bladecha samavesh asato.
blade aanee ripper hii bulldozerchi prathamik sadhane aaheth
blade.
bulldoser blade teen prakarat yetatah
blade framechya palikade kinwa eka konat saral basavale jaau shakatat. serve uchalale jaau shakatat, kahee, atirikt hydraulic cylinders, eka bajuparyant coone badalanyasathi jhukavale jaau shakatat.
kadhikadhi, utpadakta vadhavanyasathi 'scrapper' mhanoon olakhalya jaananya pruthvivar firana upkaranancha dusra tukada dhakalanyasathi kinwa khechanyasathi bulldozercha vapar keela jaato. 1883 madhye james portius yanni shodhalelya tooad fresno scrapperchi hii pahili rachana hotee, jee kapalya jaananya bhagatoon maatee kadhoon takte aanee jithe aavashyak asel tithe bharnyasathi jamaa karate. dhakalanyasathi prabalit madhyabhag asalelya doser bledna "bail blade" mhanoon olakhale jaate.
yuddhbhumitil adthale door karnyasathi aanee golibarasathichi sthitee tayar karnyasathi, yuddh abhiyantriki vahane aanee itar lashkari upkarnanmadhye, udaharanarth tofkhana tractor jase qee prakar 73 kinwa emm8 tractor, dozzer blade jodale jaatat. rangadyanvaril adthale kinwa khanee door karnyasathi aanee sudharit nivanya khodanyasathi mukhya yuddh takyanvar doser blade basavale jaau shakatat.
ripper.
ripper haah eka lamb, panjasarkha danda asato joou katheen aanee prabhavit sahitya sail karnyasathi bulldozerchya mageel bajus ektyane kinwa gunankanmadhye basavala jaau shakato. judd repingsathi sahasa ekach danda pasant keela jaato. reparmadhye badalnyayogya tungsten steel mishradhatuchi toke basavali jaate, jyala boot mhanatat.
fadalyane shetee aanee bandhkamasathi vaparnyat yenari maatee (jase qee podzol hardpan) keval sail houu shakat nahee tarr shilalelya khadkala kinwa padapathala sahaj hatalalya jaananya chhotya dhigaonmadhye modata yete. 
reparcha eka prakar mhanje stumpbuster, eka ekach spike aadvya bajoone baher padoon zadachya stumpche vibhajan karnyasathi vaparla jaato.
prakar.
bakhtarband bulldoser.
ladhau-abhiyantriki bhoomikansathi vaparlya jaanarya bulldozermadhye chalakache banduka aanee bhagnavsheshanpasun sanrakshn karnyasathi anekada kavach basavale jaate, jyamule bulldoser ladhau kshetranmadhye kaam karoo shakatat. pruthvichya halchalinsathi, bhupradeshatil adthale door karnyasathi, marg ughadanyasathi aanee sphotak charge sphotanyasathi israyali sanrakshn dalanche (idf) lashkari survant dii 9 haah sarvat vyapakpane dastaivajikaran kelela vapar aahe. aay. dii. eff. neey indradhanushya mohimedarmyan bakhtarband bulldozercha mothya pramanat vapar keela, jithe tyancha vapar ghaza patti taskari bogade upatoon taknyasathi aanee philadelphi margavar lashkari buffer zoncha vistar karnyasathi nivasi parisar, panyachya vihiri aanee pipe aanee shetjamini nasht karnyasathi keela jaat asey. yaa vaparamule ivash-kolasa aanee manavadhikar nirikshan yasarkhya manavadhikar sanghatanankadun bakhtarband bulldozercha vapar aanee puravathadar yaa donhinvar teeka jhaali, jyapaiki nantarchya sansthanni survantanna tyanchi bulldozerchi vikri aay. dii. eff. laa thambavanyache aavahan kele. israyali adhikaanyaanee taskariche bogade ukhadun taknyasathi, palestini bandukdharyanni vaparleli ghare uddhvast karnyasathi aanee buffer zoncha vistar karnyasathi bulldozercha vapar aavashyak asalyache pahile.
kahee sainyachya abhiyantyanchya siddhantanmadhye qamee-halchal asalelya bakhtarband doser (ell. emm. aii. dii.) aanee uchch-halchal asalelya bakhtarband doser (etch. emm. aii. dii.) madhye farak keela aahe. ell. emm. aii. dii. heey tyachya rojgar sthali halavanyasathi flatbedver avalambun aahe, tarr etch. emm. dii. kadey adhik majboot engine aanee drive pranali aahe jee tyala madhyam shreni aanee vegasah rastyavaril gatishilata denyasathi tayar kelee gelee aahe. tathapi, etch. emm. aii. dii. madhye samanyatah doser blade-susajj taakee kinwa bakhtarband karmchari vahak yaa sampoorn cross-country gatishilata vaishishtyancha abhav asato.
kahee bulldozermadhye nagri chalakanni kavach basavale aahe, jenekarun buldozardware kelelya kamat prekshak kinwa police hastakshep karoo nayet, jase qee hallyanchya babatit kinwa khandit imaratinchya padanichya babatit. marvin himeyarsarkhya adhikadhyanshi vaad asalelya nagarikannihi heey kele aahe, jyanni sarkari imarati padnyasathi aaplya komatsu dii355aii bulldozerla gharguti sammishra kavach dile.
durastha niyantrit doser.
alikadachya varshant, bandhkam tantradnyanatil navkalpananmule remot-niyantrit bulldoser pratyakshat aale aahet. aata, judd yantrasamagri 1000 phoot durparyant niyantrit kelee jaau shakate. yamule nokarichya thikanavaril kamgaranchya surakshitatemadhye hatbhar lagato, jyamule teey sambhavya dhokadayak kamanpasoon surakshit antaravar rahatat.
pragati aanee durvaroon avjad yantrasamagri niyantrit karanyachi kshamata kamgaranna kaam purn karnyasathi doserver purese niyantran pradan karate. hii yantre adyap suruvatichya tappyat asali taree anek bandhkam kampanya tyancha yashasviritya vapar karat aahet.
itihas.
pahilya bulldozerche rupantar shetat nangarani karnyasathi vaparlya jaananya holt pharm tractorpasoon karnyat aale. lakudtod aanee raste bandhanisathi mauu jaminivar tractorchya ashtapailootemule pahilya mahayuddhat bakhtarband takichya vikasat yogdan midale.
1923 madhye, shetkari james cummings aanee draftsmen jeey. earl mcleodney buldozarsathi pahili rachana kelee. cansaschya mauroville yetheel ciity parkmadhye eka pratikruti pradarshit kelee aahe, jithe doghanni pahila bulldoser bandhala hota. 18 december 1923 roji cummings aanee mcleodney yuu dakhal kele.ess. paytant #1,522,378 jeey nantar 6 janewari 1925 roji tractorsathichya jodanisathi jaaree karnyat aale."
1920 chya dashkaparyant, track keleli vahane, visheshtah survant 60, samanya jhaali. 1940 chya dashakat rubber-thakaleli vahane vaparat aalee. kalve khodanyasathi, matichi dharane ubharanyasathi aanee pruthvivar firanyasathi itar kaame karnyasathi, yaa tractorchya samore eka mothee, jaad, dhatuchi plate hotee. (blade nantar tyacha vakr aakar midala). kahee suruvatichya modelsmadhye, driver kbinshivay khulya jaaget varr basala hota. bulldoser bladeche teen mukhya prakar mhanje matila tulanene lamb antar dhakalanyasathi aanee vahoon nenyasathi yuu-blade, matiche dheeg khalee padnyasathi aanee pasaravanyasathi saral blade aanee brush aanee mule kadhanyasathi brush reek. heey jodani (chakanche aanee croller tractor aanee trucksathi jodani asalelya chhotya upkarananchya utpadakanni ghar-nirmit kinwa bandhaleli) 1929 paryant disu lagali.
1930 chya dashakachya madhyaparyant bail-shrenikarachi vyapak sweekruti disun yet nahee. keval bladechya vajanaaivaji hydraulic cylinderdware puravilelya power daun-forcechya jodanimule 1940 chya dashkaparyant teey mothya aanee lahan kantratdaransathi samaan pasantiche utkhanan yantra banale, toparyant 'bulldoser' haah shabd keval jodanyaivaji sampoorn machinecha sandarbh dett asey.
gelya kahee varshant, mothya matichya kamansathi yogya asalelya upkarananchya maganila pratisad mhanoon bulldoser mothe aanee adhik shaktishali jhaale. survant, komatsu, clark equipment company, cases, euclid, ellis chalmers, liber, leugong, terrex, fiat-ellis, johnn dier, massie fergueson, bemal, xgma aanee aantarrashtriy kapani yantrasarkhya kampanyanni mothya, track kelelya prakarchya maatee halvinari yantre tayar kelee. aar.jee. letorneu aanee survantane mothya, rabarane thakalelya bulldozerchi nirmiti kelee.
kalanusar bulldoser adhik atyadhunik hott gele. sudharananmadhye manual transmissionaivaji (automobilesmadhye) svayanchalit transmissionshi samaan drivetraincha samavesh hoto, jase qee prarambhik euclid see-6 aanee tii. see.-12 kinwa model see. turnadosure, bladechi halchal prarambhik modelchya kebal vinch/brekaivaji hydraulic cylinder kinwa electric motorsdware niyantrit kelee jaate aanee svayanchalit grade niyantran. hydraulic cylindermule daun forcecha vapar, bladechi adhik achook hatalani aanee svayanchalit niyantrane saksham jhaali.
united kingadammadhil 1946-47 chya atishay barfal hivalyat, kiman eka prakaranat, annachi kamatarata asalelya durgam gawala aavashyak puravatha karananya mothya slagela odhana buldozardware puravatha keela gela.
topcon positioning systeams, ink. dware utpadit kelyapramane jee. pii. ess. tantradnyanasaha bulldozerchi rachana karane haah eka alikadil navonmesh aahe.achook shreni niyantranasathi aanee (sambhavya) "sthir" bandhkamasathi, trimble ink kinwa leika bhupranali. yaa pranalinvishayichya anek aanee anekada vegvegalya davyanna pratisad mhanoon, kellog ahavalane 2010 madhye serve utpadakanchya pranalinchi tapshilvar tulana prakashit kelee, jyat keval dosersathi 200 hoon adhik vaishishtyanche moolyankan kele gele.
survant heey bulldozerche sarvat prasiddha utpadak aahe. komatsu, lieber, cases, hitachi, volvo aanee johnn dier heey sadhyache pratispardhi aahet. jaree hii yantre sudharit shet tractor mhanoon suru jhaali asali taree tyaa mothya nagri bandhkam prakalpansathi mukhya aadhar banalya aanee jagbharatil lashkari bandhkam vibhagankadun tyancha vapar suru jhaala. survant dii9 heey sarvat prasiddha model, khanee saaf karnyasathi aanee shatruchi rachana padnyasathi dekhil vaparale gele.
utpadak.
auph-hayave research' neey prakashit kelelya 2010 chya utpadanavar aadharit udyog aakadevarivarun asey disun aale qee shantui haah bulldozercha sarvat motha utpadak hota, jyane tyaa varshi 10,000 hoon adhik units tayar kelya kinwa jagaat tayar kelelya paach croller-prakarchya doserpacky done. ekkanchya sankhyenusar, survant ink haah pudhcha sarvat motha utpadak aahe., jyane 6,400 unitsche utpadan kele.
komatsune 1981 madhye dii575aii, 1991 madhye dii757aii-2 aanee 2002 madhye dii575aii-3 sadar kele, jeey company jagatil sarvat mothe bulldoser asalyache sangate.
shabdacha itihas.
heey 1929 chya suruvatilach disu lagale, parantu tyanna 'bull grader' blade mhanoon olakhale jaat hote aanee 'bulldoser blade' haah shabd 1930 chya dashakachya madhyaparyant vyapak vaparat aala nahee. "bulldoser' aata keval jodani navhe tarr sampoorn yantracha sandarbh dete. samkalin vaparat, 'bulldoser' kadhikadhi 'doser' mhanoon sankshipt kele jaate aanee 'bulldosing' heey kriyapad 'dosing' mhanoon sankshipt kele jaate, asha prakare aadhipasoon astitvat asalelya 'dosing' yaa kriyapadasah samshabd tayar hoto.