Elastic crawler traveling apparatus and sprocket for crawler belt used in the same

An elastic crawler traveling apparatus (1) including an elastic crawler (2) in a shape of an endless belt formed of an elastic material of rubber or the like;

• a sprocket (3) for a crawler belt arranged to be brought into contact with an inner face of the elastic crawler (2);
• a driven wheel (6);
• and a rolling wheel (7),
• the elastic crawler (2) comprising a belt main body (8);
• a plurality of projections (9) formed to project at intervals therebetween along a peripheral direction of the elastic crawler on an inner face of the belt main body (8);
• and a tension member (14) of a steel cord or the like embedded at an inner portion of the belt main body (8) for restricting elongation of the belt main body (8),
• the sprocket (3) comprising a contact portion (17) to contact the belt main body (8), the contact portion (17) having contact width (C) which is substantially equal to an embedding width (A) of the tension member (14) in a belt width direction of the elastic crawler.