Crawler
A crawler belt (crawler) is a closed continuous belt or a chain of hinged links (tracks), used in a crawler drive. On the inner surface of the track, there are depressions or protrusions with which the traction wheels of the machine interact. The outer surface of the track is equipped with protrusions (soil grips) that provide traction with the soil. Removable spurs increase the track's grip on soils with low strength. Tracks can be metal, rubber-metal, and rubber. Metal tracks with collapsible or non-collapsible links have become the most common on heavy vehicles. To increase the wear resistance and service life of tracks, their links and connecting elements (fingers, bushings) are made of special high-manganese steel and subjected to heat treatment, and use rubber-metal hinges, hinges with needle bearings, etc. On snowmobiles and light all-terrain vehicles, mainly rubber-metal or rubber tracks are used [Russian-Ukrainian dictionaries].
The crawler belt has an endless steel belt (belt with high tensile strength), and the central part is made of rubber and attached around the outer periphery of the steel belt.
The steel belt has engagement holes arranged at even intervals in a circumferential direction thereof. The belt's main body has escape recesses formed therein. A wheel has projections arranged at even intervals in a circumferential direction on an outer peripheral surface thereof. The projections are adapted to be engaged with the engagement holes of the steel belt and, at the same time to enter the escape recesses of the central belt body [Crawler belt, Crawler Unit, and Method for Manufacturing Crawler Belt].
Crawler. Russian-Ukrainian dictionaries. Retrieved from: https://r2u.org.ua/s
U.S. Patent Documents. Crawler belt, Crawler Unit and Method for Manufacturing Crawler Belt. Retrieved from: https://patents.google.com/patent/US7578565