Locomotive bogie roll-out unit

The unit rolls bogies out from under a locomotive body raised at the repair station and delivers them to the bogie shop without involving the overhead crane. The crane thus remains free for handling large assemblies, while bogies weighing up to 35 t are moved along a fixed path at a constant speed.

The core of the unit is a transfer trolley running on rails in a transverse trench that crosses the repair tracks of the shop. The top of the trolley carries a section of track with locking devices that aligns with the rails of the station. The bogie itself is moved by a self-propelled rack-and-pinion traction carriage: the rack is fixed along the rail on the station, the platform and the bogie shop track, so the carriage travels the whole route together with the bogie. It engages the bogie frame at its standard points and pulls it out from under the body onto the platform; the platform travels to the required track, the same carriage rolls the bogie onto the disassembly station, and after repair the bogie is returned under the body in reverse order.

The scope of supply includes a transfer trolley with two driven axles and a cable reel or conductor-bar power feed, a self-propelled traction carriage with its own cable reel and a set of grips for the locomotive series, rack sections for the station and the bogie shop track, trench rails with end stops and positioning sensors, a control cabinet and a portable pendant. On request the unit is fitted with radio control, a weighing system and automatic positioning at preset track addresses.