Wheel-motor unit repair station

The repair station organizes the full cycle of work on an electric locomotive wheel-motor unit after it is rolled out of the bogie: separating the unit into the wheelset and traction motor, replacing the axle suspension bearings and gear cases, reassembly and subsequent running-in. All operations are carried out in one area, which eliminates crane transfers of heavy assemblies between sections and shortens the time the unit spends in repair.

The core of the station is a lifting-and-rotating table onto which the unit is fed along a rail track. The table raises the unit to working height and turns it about a vertical axis, opening access from both sides. Once the gear cases and axle suspension bearing caps are removed, the motor is taken onto the station's support arms and the table lowers the wheelset onto the rails — separation takes place without a crane or impact loads. The motor is then transferred to the tilter for repair of the suspension and axle suspension bearing seats. After assembly the unit is rolled onto the running-in bench, where the wheelset is driven by its own motor in both directions while bearing temperatures and gear noise are monitored.

The station configuration is selected to suit the repair program: from a stand-alone lifting table to a complete line with a motor tilter, running-in bench, wheelset storage rack and hydraulic power unit. Control is concentrated on a single panel, and the running-in bench records parameters and prints a test report.