| 摘要 |
<p>The device (1) for braking a trailer comprises a braking valve (20) which can be connected to the braking system of a trailer and having an internally hollow containment body (2a, 2b) inside which are housed sliding at least a braking piston (4), moving between an idle configuration and at least a braking configuration in which it is moved with respect to the idle configuration to convey a work fluid to the braking system of the trailer, main elastic means (5) being provided acting on the braking piston (4), and a piloting piston (7a, 7b) moving, due to the pressure present in the braking system of the vehicle, between an idle configuration and a piloting configuration in which it is moved towards the braking piston (4) to push it towards a braking configuration (3c), wherein the piloting piston (7a, 7b) has at least a first and a second portion (7a, 7b) with respective thrust areas and moving the one with respect to the other to apply forces of different intensity on the braking piston (4).</p> |
