FIELD: electricity; transportation.
SUBSTANCE: group of inventions relates to current collectors of vehicles. Device for controlling clamping force of a current collector of a vehicle to a contact wire comprises a control circuit, a working pressure control circuit and relay valve intended for control of produced pressure depending on control pressure and its transfer as working pressure to working pressure control circuit. Besides, the relay valve has at least one inlet for control pressure with a small cross section, one input for the produced pressure and one outlet for working pressure with large cross sections so that a gear ratio is formed. Clamping force of current collector is initiated by means of pneumatic or hydraulic working pressure. Also disclosed are versions of a method of controlling clamping force of a current collector of a vehicle to a contact wire, as well as a vehicle with a device for controlling clamping force of a current collector.
EFFECT: technical result consists in more accurate control of required pressing forces between current collector and contact wire.
19 cl, 5 dwg
