Igama: Izicathulo ze-bulldozer 3 bar zenziwe ngensimbi ekhonjiwe, insimbi ekhonjiwe.
Material: ingxubevange steel noma ngokuvumelana nezidingo zamakhasimende.
Ubukhulu: Ngokusho kwemidwebo yobuchwepheshe.
Isakhiwo se-Shanvim track shoe:
Izicathulo zethrekhi ezivame ukusetshenziswa zihlukaniswe zibe izinhlobo ezintathu ngokusho kokuma komhlaba. Kunezinhlobo ezintathu zezimbambo zodwa, izimbambo ezintathu neziphansi eziyisicaba. Kukhona nezicathulo zethrekhi ezingunxantathu zomuntu ngamunye. Izicathulo zethrekhi eziqiniswe kanye zisetshenziselwa ikakhulukazi ama-bulldozer nogandaganda, ngoba lolu hlobo lwemishini ludinga izicathulo zethrekhi ukuze zibe nokudonsa okuphezulu ngaphambi kokulungiswa. Kodwa-ke, akuvamile ukusetshenziswa emishinini yokumba, futhi lolu hlobo lwesicathulo sethrekhi lusetshenziswa kuphela lapho uhlaka lokubhoboza lufakwe emshinini wokumba noma lapho kudingeka i-thrust enkulu evundlile. I-traction ephakeme iyadingeka lapho usuka enganeni, ngakho-ke ibha ephezulu yokukhasa (okungukuthi, i-crawler spur) izompintsha inhlabathi (noma izwe) phakathi kwama-crawler bars, bese ithinta ukuhamba kwe-excavator.
Isicathulo sethrekhi yensimbi singahlukaniswa sibe: ipuleti le-excavator, ipuleti likagandaganda, lezi ezimbili zivame ukusetshenziswa, kusetshenziswa insimbi yesigaba njengento eluhlaza. Kukhona nephansi elimanzi elisetshenziswa ogandaganda, abajwayele ukubizwa ngokuthi "amapuleti angunxantathu", okungamapuleti afakwe. Olunye uhlobo lwe-casting slab lusetshenziswa kuma-crawler cranes. Isisindo saleli slab sincane njengamakhilogremu angamashumi, futhi sifinyelela amakhulu amakhilogremu.