Purpose
Double-trolleys set type 20-60.4 is used to transport various types of electrical equipment, as well as other machines and equipment, along the tracks of a suspended monorail transport system, installed in underground mines, in methane and nonmethane areas, in excavations of the A, B and C class of methane explosion hazard, as well as the A and B class of coal dust explosion hazard.
Double-trolleys set type 20-60.4 is intended for the installation in the transport unit of a train with electric system, driven by a self-locking sliding device of 20-101 type. Double-trolleys set can also be joined directly or coupled with a transport unit and a diesel locomotive, switching car and other types of drive, approved for application in underground mines.
