Yambani

Kumayambiriro kwa zaka za m'ma 1830 patangotha ​​​​kubadwa kwa galimoto ya nthunzi, anthu ena anatenga pakati kuti apereke matabwa a matabwa ndi mphira "mayendedwe" a mphira, kotero kuti magalimoto olemera amatha kuyenda pamtunda wofewa, koma mayendedwe oyambirira ndi ntchito zake ndizo. sizinali bwino, mpaka 1901 pamene Lombard ku United States adapanga galimoto yoyendetsa nkhalango, adangopanga njira yoyamba yokhala ndi zotsatira zabwino. Patadutsa zaka zitatu, injiniya waku California Holt anagwiritsa ntchito zimene Lombard anatulukira popanga ndi kupanga “77″ thirakitala ya nthunzi.

Inali thirakitala yoyamba kutsatiridwa padziko lonse lapansi. Pa Novembala 24, 1904, thirakitala idayesedwa koyamba ndipo pambuyo pake idapangidwa mochuluka. Mu 1906, kampani yopanga thirakitala ya Holt inamanga thirakitala yoyamba yapadziko lonse lapansi yoyaka mafuta mkati mwa injini yoyaka moto, yomwe idayamba kupanga zochuluka chaka chotsatira, inali thirakitala yopambana kwambiri panthawiyo, ndipo idakhala fanizo la thanki yoyamba padziko lapansi yopangidwa ndi Britain. patapita zaka zingapo. Mu 1915, British adapanga thanki ya "Little Wanderer" motsatira thirakitala yaku America "Brock". Mu 1916, akasinja opangidwa ndi French "Schnad" ndi "Saint-Chamonix" adatsata mathirakitala aku America "Holt". Crawlers adalowa m'mbiri ya akasinja pafupifupi 90 masika ndi autumn mpaka pano, ndipo mayendedwe amasiku ano, mosasamala kanthu za mawonekedwe awo kapena zida, kukonza, ndi zina zambiri, akulemeretsa nyumba yosungiramo thanki, ndipo mayendedwe apanga akasinja omwe amatha. kupirira mayesero a nkhondo.

Pangani

Mawilo ndi maunyolo osinthika omwe amayendetsedwa ndi mawilo ogwira ntchito omwe amazungulira mawilo ogwira ntchito, mawilo onyamula katundu, mawilo olowetsamo ndi ma pulleys onyamula. Ma track amapangidwa ndi nsapato za njanji ndi mapini. Ma track pin amalumikiza ma track kuti apange ulalo wa njanji. Nthambi ziwiri za nsapato za njanji zimakhala zobowoleredwa, zomangirira ndi gudumu logwira ntchito, ndipo pakati pali mano okopa, omwe amagwiritsidwa ntchito kuwongola njanji ndikuletsa njanji kuti isagwe pamene thanki ikutembenuzidwa kapena kugubuduzika, ndipo pamenepo. ndi nthiti yolimba yotsutsa-yopanda (yotchedwa chitsanzo) pambali ya kukhudzana kwapansi kuti ikhale yolimba ya nsapato ya njanji ndi kumamatira kwa njanji pansi.