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Towing (shunting) Carriage: The towing carriage moves on the outer side of the track on a guide supported on steel sections fixed between the ties and can move both ways (forward and backward) by means of a rope. An operator couples the carriage with the railroad car. A hook for non-traction handling of the car is used for towing. If the puller is built as a twin unit both carriages are moved by the same drive station. In the twin type one carriage travels with a load while the other one moves idly in the opposite direction. UT-6 towing carriages are designed to move groups of railroad cars with the total weight of up to 240 t.

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Drive Station: The main component of the drive station is a motor-planetary gear assembly, supported on a steel frame and used to drive the towing carriage with ropes as the 'driving medium' and a hydraulic power unit with a cylinder, designed to provide and maintain the necessary tension of the towing ropes, depending on the operating status of the drive station.

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Return Station: It is a set of two wheels: interlacing and directional.

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Limit Sensors System: At both ends of the operating length of the towing carriage induction sensors are mounted to determine the allowed final positions of the carriage. As an emergency device, mechanical limit switches are installed behind them to cut off the power supply and stop the carriage if the limit sensors should fail. The system is equipped with an anti-overload protection.

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Signalling System: There is a sound and optical emitting device installed at the rail track.

Operation and Control: The operation is started and controlled from a control panel or - optionally - with a remote controller. Individual functions are controlled with buttons and switches. The controlled located in an RS automatic control box monitors the tension of the rope.