STEERING WHEEL AND UNDERWAY UNIT FOR TRACKED CAR

摘要

1. The guide wheel (25) of the chassis assembly (10) for the tracked vehicle (13), the chassis assembly includes at least two tracks (55) fastened with the sleeve (34), the sleeve includes a sleeve (37 ) located around and rotationally relative to the pin (43), at least one of the tracks includes a wear surface (61) of the track chain treadmill, a wear surface of the track chain treadmill located at a distance equal to the initial height ( 82) wear surfaces, the steering wheel comprises: a lower surface (67) made with a possibility of wear on a wear surface of a treadmill of a track chain, and also a top surface (70) made with a possibility of wear on a sleeve, the upper surface being radially outside of the lower surface on a distance equal to the initial height (85) of the upper surface; the initial height of the upper surface may range from about 70% to about 90% of the original height of the wear surface. 2. The steering wheel according to claim 1, characterized in that the initial height of the upper surface can be in the range from about 70% to about 85% of the initial height of the wear surface. The steering wheel according to claim 1 or 2, characterized in that the initial height of the upper surface is selected so that the upper surface is in contact with the sleeve when the wear of at least one of the tracks, including the wear surface of the treadmill of the track chain, is approximately 20% to about 60%. 4. Guide wheel according to claim 3, characterized in that the initial height of the upper surface is selected�