Patent ID: 6203124
Filing Date: 2001-03-20
Classification: B62D,E02F

Abstract:
A crawler undercarriage for a construction machine comprising:a support frame (4) having opposing ends and an upper and lower surface;at least one tumbler (2) disposed at one end of said support frame and having an assigned idler wheel (3) disposed at an opposing end of said tumbler (2);a chain (1) running over said at least one tumbler (2) and having a plurality of driving lugs (8);a plurality of track rollers (5) arranged on the lower surface of said support frame for providing lower guidance to said chain (1);at least one carrier roller (6) arranged on the upper surface of said support frame (4) for providing upper guidance to said chain (1), said at least one carrier roller (6) having opposing sides and including two bearing pins (7, 7') coaxially arranged on opposing side of said at least one carrier roller (6), said at least one carrier roller (6) having a wheel body portion (9) comprising at least one side face (10) and a plurality of axially parallel driving pins (11) arranged equidistantly on a coaxial circumferential circle of said at least one side face (10); wherein one of said driving lugs (8) respectively engage between two adjacent driving pins (11, 11') of said carrier roller (6).