MINE CRAWLER EXCAVATOR RUNNING GEAR Russian patent published in 2016 - IPC E02F9/02 

FIELD: transport.

SUBSTANCE: claimed device comprises the lower frame of box-like cross-section with lengthwise and crosswise stiffness stiffening rings. Exposed caterpillar frames with axles are attached to lengthwise sides of said frame by spigot-and-socket joint with wedge spacer. Said axles support the road, tensioning and drive wheels with the caterpillars and the drive. The lower frame top sheet accommodates the rotary support. Caterpillar frames are cast. Said axles are provided with bronze sleeves for the wheels to be fitted thereon in cantilever and locked by limiting straps from inside and by semi-clamps from outside. Cantilever bar with rollers is arranged above the road wheels at the caterpillar frame. Square openings are made at the caterpillar frame front to house the square section tensioning axle and adjusting plates. Every caterpillar frame is provided with independent running drive. Spigot-and-socket joints of the lower and caterpillar frames are composed of the truncated cone with coaxial recess at the bottom base and with generatrix inclination of 55°≤α≤80°. The lower frame crosswise stiffness ring horizontal sheets have service hole some 450-660 mm in diameter.

EFFECT: perfected operating performances.

3 cl, 4 dwg