| 摘要 |
The invention is related to a hand brake system (A) involving a trailer control valve (6) ensuring braking of the trailer simultaneously with the towing vehicle during the braking pneumatically through the signal towing vehicle receives from the hydraulic braking system, a trailer brake control valve (8) ensuring the braking of trailers with spring braking system through a signal it receives from trailer control valve (6) and a towing vehicle hand brake selenoid valve (7) ensuring park brake of the towing vehicle and the trailer simultaneously through the signal the towing vehicle receives from the hand brake and is used for the trailers of engineering vehicles, agricultural machinery and commercial vehicles. |
