Conversion train movable on a track with at least one conversion train segment (1), which is set up for travel in a track area with sleepers but without rails, the conversion train segment (1) having a frame (2) and a crawler track connected to the frame via support elements (3) - Undercarriage (4) with at least 2 caterpillar tracks (5), which have caterpillar chains (6) rotating in the direction of travel for travel on the railless sleepers, characterized in that each caterpillar track drive unit (5) has one in each case in the area of the contact surfaces (7) of the caterpillar chains (6) on the outside of the caterpillar chain (6) has circumferential protective tape belts (8), the protective tape belt (8) not being firmly connected to a caterpillar chain (6), and that guide elements (9) for the protective tape belt (8) are set up, which the protective tape belt (8) with the proviso that the protective tape belt (8) is always between the contact surface (7) of a caterpillar chain (6) and a substrate under the caterpillar The chain drive (5) rotates.
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