CORE FOR RUBBER TRACK AND RUBBER TRACK

摘要

A rubber track (1) has formed in it simple means that can carry a part of abnormal tensile force acting on substantially the entire length in the circumferential direction of the rubber track (1). The construction secures smooth operation of the rubber track and reliably prevents cutting of a steel cord (s1) due to such abnormal tensile force. A core (3) has an engagement section (3b) located in the center region in the longitudinal direction of the core, guide projections (3a) on the outer sides of opposite ends in the longitudinal direction of the engagement section, and wing sections (3c) provided on the outer sides of the guide projections (3a). The core (3) further has tensile force carrying sections (4a, 4b) arranged at positions that are located in the thickness direction of the core and are closer to the outer periphery of the rubber track than the outer peripheral-side surfaces of the wing sections (3c). The tensile force carrying sections (4a, 4b) carry tensile force acting in the lateral direction of the core and also carry pressing force acting in the thickness direction of the core. Corresponding tensile force carrying sections (4a, 4b) of cores adjacent to each other in the circumferential direction of the rubber track are engaged with each other. Further, a fixation belt layer in the circumferential direction of the rubber track is provided in a rubber track body (1a) at positions related to tensile force carrying sections (4a, 4b).