Disc brakes for railway vehicles

摘要

A disc brake comprises a rigid caliper which straddles the peripheral edge of a rotatable disc, and friction pads for engagement with the disc are located in the caliper. One pad is applied directly to the disc by an actuator which is provided in adjacent limb of the caliper, and the other pad is applied to the disc by the reaction on the caliper which causes the caliper to move with respect to the disc and a relatively stationary drag-taking part from which the caliper is carried by a drag-transmitting arm. The arm is connected at one end to the stationary part by a single pivot pin which pivots the arm for movement about an axis normal to the axis of the disc, and the arm is coupled to the caliper by of a spherical joint.