Sashen bulldozers, masana'antar sarkar bulldozer ta Indiya

Sashen bulldozers, masana'antar sarkar bulldozer ta Indiya

An yi nasarar ƙirƙirar injin crawler dozer (wanda aka fi sani da crawler dozer) ta hannun Benjamin Holt, wani Ba’amurke, a shekarar 1904. An ƙirƙira shi ta hanyar sanya injin ɗaga bulldozer da hannu a gaban tarakta mai ɗaukar kaya. A wancan lokacin, injin tururi ne. Daga baya, an ƙirƙiri injin crawler dozers da ke amfani da wutar lantarki ta iskar gas da injin mai. An kuma ƙera ruwan bulldozer daga ɗagawa da hannu zuwa ɗagawa da igiya ta waya. Benjamin Holt shi ma yana ɗaya daga cikin waɗanda suka kafa Caterpillar Inc. a Amurka. A shekarar 1925, Kamfanin Holt Manufacturing da Kamfanin C 50. Best Bulldozer sun haɗu suka kafa Kamfanin Caterpillar Bulldozer, inda suka zama kamfanin farko da ya kera kayan aikin bulldozer a duniya, kuma suka ƙaddamar da rukunin farko na injin bulldozer 60 da injinan dizal a shekarar 1931. Tare da ci gaba da ci gaban fasaha, injinan dizal suna amfani da injin bulldozer, kuma duk ana ɗaga ruwan bulldozer da scarifier ta hanyar silinda masu amfani da ruwa. Baya ga bulldozers na nau'in crawler, akwai kuma bulldozers na nau'in taya, waɗanda suka wuce shekaru goma bayan bulldozers na nau'in crawler. Bulldozers na crawler suna da ingantaccen aikin mannewa kuma suna iya yin jan hankali sosai, don haka iri-iri da adadin samfuransu a gida da waje sun fi na bulldozers na taya. A duniya, Caterpillar ita ce babbar kamfanin kera injinan injiniya a duniya. Bulldozers ɗin caterpillar ɗinta sun haɗa da manyan, matsakaici da ƙananan jerin D3-D11, mafi girman D11 RCD, kuma ƙarfin injin dizal yana kaiwa 634kw; Komatsu, wani kamfani na Japan, ya zo na biyu. A shekarar 1947, ya fara gabatar da kuma samar da bulldozers na crawler na D50. Akwai jerin bulldozers guda 13 na crawler, waɗanda suka fara daga D21-D575, mafi ƙanƙanta shine D21, ƙarfin flywheel na injin dizal shine 29.5kw, mafi girma shine D575A-3SD, kuma ƙarfin flywheel na injin dizal shine 858kw. Hakanan shine mafi girman bulldozer a duniya a halin yanzu; Wani kamfanin bulldozer na musamman shine Liebheer Group na Jamus. Bulldozers ɗinta duk suna ƙarƙashin matsin lamba na hydrostatic. Bayan fiye da shekaru goma na bincike da haɓakawa, wannan fasaha ta gabatar da samfuri a 1972. A 1974, ta fara samar da PR721-PR731 da PR741 masu amfani da hydrostatic. Saboda iyakancewar abubuwan da ke cikin hydraulic, matsakaicin ƙarfinta shine 295Kw kawai, kuma samfurinta shine haƙar ma'adinai na PR751.

Masana'antun bulldozer guda uku da ke sama suna wakiltar mafi girman matakin bulldozers na crawler a duniya a yau. Sauran masana'antun bulldozers na ƙasashen waje, kamar John Deere, Case, New Holland da Dreista, suma suna da babban matakin fasahar samarwa. Masana'antar sarkar bulldozer ta Indiya
Samar da bulldozers a China ya fara ne bayan kafuwar sabuwar kasar Sin. Da farko, an sanya bulldozer a kan tarakta na noma. Tare da ci gaban tattalin arzikin kasa, bukatar bulldozers masu matsakaicin girma da manyan masu rarrafe a manyan ma'adanai, kiyaye ruwa, tashoshin wutar lantarki da sassan sufuri yana karuwa. Duk da cewa masana'antar kera bulldozers masu matsakaicin girma da manyan masu rarrafe a kasar Sin ta samu ci gaba sosai, ba za ta iya biyan bukatun ci gaban tattalin arzikin kasa ba. Saboda haka, tun daga shekarar 1979, kasar Sin ta ci gaba da gabatar da fasahar samarwa, takamaiman tsari, ka'idojin fasaha da tsarin kayan bulldozers masu rarrafe daga Kamfanin Komatsu na kasar Japan da Kamfanin Caterpillar na kasar Amurka. Bayan narkewar abinci da sha, da kuma manyan fasahohin zamani, an kafa wani tsari da kayayyakin fasahar Komatsu suka mamaye a shekarun 1980 da 1990. Masana'antar sarkar bulldozer ta kasar Indiya

Tun daga shekarun 1960, akwai kimanin masana'antun bulldozer guda huɗu a masana'antar bulldozer ta cikin gida. Dalilin shi ne cewa buƙatun sarrafa kayayyakin bulldozer suna da yawa, wahalar tana da yawa, kuma yawan samar da kayayyaki yana buƙatar babban jari. Saboda haka, kamfanoni na yau da kullun ba sa iya shiga cikin sauƙi cikin sauƙi. Duk da haka, tare da haɓaka kasuwa, tun daga "Tsarin Shekaru Biyar Takwas", wasu manyan kamfanoni da matsakaitan masana'antu a China sun fara aiki da bulldozers a lokaci guda bisa ga ƙarfinsu, kamar Inner Mongolia No.1 Machinery Factory, Xuzhou Loader Factory, da sauransu, kuma sun faɗaɗa ƙungiyar masana'antar bulldozer. A lokaci guda, ƙananan kamfanoni sun fara raguwa saboda rashin kyakkyawan shugabanci da kuma buƙatar daidaitawa da ci gaban kasuwa, kuma wasu sun janye daga masana'antar. A halin yanzu, masana'antun bulldozer na cikin gida galibi sun haɗa da Shantui Construction Machinery Co., Ltd., Hebei Xuanhua Construction Machinery Co., Ltd., Shanghai Pengpu Machinery Factory Co., Ltd., Tianjin Construction Machinery Factory, Shaanxi Xinhuang Industrial Machinery Co., Ltd., Yituo Construction Machinery Co., Ltd., da sauransu. Baya ga samar da bulldozers, kamfanonin da ke sama sun kuma fara shiga cikin samar da wasu kayayyakin injinan gini, kamar Shantui, wanda kuma ke samar da na'urorin birgima a hanya, na'urorin grader, na'urorin haƙa ƙasa, na'urorin loda kaya, na'urorin forklifts, da sauransu. Masana'antar sarkar bulldozer ta Indiya