Self-Discharging Muck Disposal Unit MDU-77

The MDU-77 Self-Discharging Muck Disposal Car is designed for mechanized accumulation, transportation and unloading in specially designated places or reloading to other muck dis- posal trains of ballast and other bulk materials.

The car is used for track main- tenance and repairs. It can be coupled with ballast cleaning machines, or trench cutting ma- chines.

Advantage

The car may be used as a single unit or in train formation operated by a single control panel

Maximum number of cars in the train - 16

The train can be unloaded simultaneously to the track side or sequentially, i.e., by reloading muck from one car to another

Specifications

Performance
— at conveyor speed 0.09 m/s	not less than 550 m³/h
— at conveyor speed 0.045 m/s	not less than 275 m³/h
Lifting capacity (material density 1.75 t/m3)	not exceeding 127 t
Crew (in a train consisting of 16 cars)	4 persons
Loaded car weight	not exceeding 73.5 t
Empty car weight	not exceeding 200 t
Design speed
— empty	not exceeding 80 km/h
— loaded	not exceeding 60 km/h
Minimum radius of curve negotiation	125 m
Maximum static bogie axle load
— empty	90.13 kN
— loaded	245.25 kN
Power unit
— nominal power, kW	150
— cooling system type	liquid
— electric current	AC
— rated output voltage	400 V
— frequency	50 Hz
Service life	30 years