(57) A braking device, in particular for braking the descent of a life-boat when lowered
from a ship, of the type comprising a pair of braking discs (2, 9), of which a first
disc (2) is connected to a fixed member (1) and the other (9) is connected to a rotating
member to be braked, for example a winch, and brake means (13, 24; 23) arranged to
urge the discs one against the other so as to brake said rotating member. The brake
means comprise static braking means (13, 24) arranged to exert a constant thrust on
the discs such as to maintain them in mutual contact and maintain the rotating member
braked, means (17; 28) for at least partly counteracting the action of the static
braking means and enabling the discs to be separated when it is required to enable
the braking member to rotate, and dynamic braking means connected to the rotating
member and comprising a loose mass (23) arranged to exert, by centrifugal effect,
a thrust on the discs proportional to the rotational speed of said rotating member
such as to bring the discs into mutual contact and brake the rotating member, cooling
means (18, 19) being provided at least for the braking discs (2, 9).
|
|
