摘要:
A parking brake (10) having a drum containing first and second brake shoe portions (11, 12), a handbrake lever (18) pivoted (19) adjacent one end on one (11) of the brake shoe portions and a strut (20) extending between a first abutment on the handbrake lever and a second abutment (21) on the other (12) of the brake shoe portions. Pivoting of the handbrake lever relative to said one brake shoe portion (11) moves the strut (20) which in turn moves the other brake shoe portion (12) away from said one brake shoe portion to bring the shoe portions into contact with the drum thus applying the parking brake. One of the abutments is in the form of a biased wedging means (21) which acts on the strut (20) to take up all play in the thrust path between the handbrake lever (18) and the other brake shoe portion (12) via the strut. A clamping member (27) is provided for disabling the wedging means (21) from operating except when initial manufacturing or assembly clearances are being taken up in the strut or when a subsequent manual adjustment of shoe clearance is being made. Alternative snail-cam type wedging means (21) are also disclosed as in an electrically actuated parking brake system with an automatic clearance adjustment device.
摘要:
L'invention est relative à un actionneur de freinage pour frein hydraulique d'aéronef, destiné à être rapporté dans l'une des cavités d'une couronne du frein, l'actionneur comprenant une chemise (1) adaptée à être reçue à étanchéité dans la cavité de la couronne, un piston (3) monté à coulissement étanche dans la chemise selon un axe de coulissement (X) pour appliquer un effort de freinage sur des éléments de friction lors de l'introduction d'un fluide sous pression dans la cavité, et présentant une course opérationnelle déterminée, un dispositif de rattrapage d'usure (10) qui définit une position de retrait du piston dans la chemise au moyen d' une butée mobile (11) pouvant être avancée par le piston lors de l'application d'un effort de freinage, et un organe élastique (16) de rappel du piston vers la position de retrait prenant appui sur la butée mobile. Selon l'invention, la butée mobile est réduite à un organe de friction frottant contre la chemise, de sorte que l'une des faces de l'organe de friction sert de butée définissant la position de retrait du piston, et l'autre des faces sert d'appui à l'organe élastique de rappel, l'organe élastique présentant lors de sa compression une augmentation d'effort suffisante pour pouvoir repousser la butée mobile au cas où le piston ne touche pas les éléments de friction alors que sa course opérationnelle est déjà consommée.
摘要:
A clamp and quick release mechanism for clamping and releasing a cylindrical linkage to a rod-like member comprises a locking ring located on the rod-like member and a clamping ring. The inner surface of the clamping ring and the outer surface of the locking ring are configured such that rotation of the clamping ring in one direction will compress the locking ring and rotation in the other direction will allow expansion of the locking ring.
摘要:
The present invention relates to a parking brake including a lever (3) coupled to a brake wire (9) included in the brake system. Characteristic of the invention is that the lever (3) is arranged to work in two steps to achieve the desired braking power. In the first step the lever is arranged to make a translational movement for taking up wire slack in the brake system, while in the second step the lever is arranged to execute a rotation whereby the force transmission to the wire (9) takes place at a higher ratio than in the first step.
摘要:
A brake apparatus (100) includes a coupling member (35) configured to couple one end parts (31) of a pair of link arms (30), an actuator (20) mounted on the coupling member (35) and configured to advance and retract an output member (21), a lever (40) rotatably coupled to the output member (21) and configured to rotate by advancing and retracting movements of the output member (21) and a booster unit (50) provided on at least one of the one end parts (31) of the pair of link arms (30) and configured to rotate the link arms (30) with supporting portions (32) as fulcrums by boosting a force transmitted by the rotation of the lever (40).
摘要:
A rotational coupling device (20) for use as a clutch and/or brake is provided having structure to compensate for wear on braking surfaces. The device includes an armature (36) coupled to an output member (24) and movable between positions of engagement with a rotor (26) and a brake plate (38). The brake plate is coupled to a stationary field shell (32) that houses a conductor (34) on one side of the rotor opposite the armature and brake plate. The brake plate is axially spaced from the field shell and a removable shim (42) or adjustable spacer (136) is disposed between the brake plate and the field shell. Removal of the shim or adjustment of the spacer permit movement of the brake plate towards the field shell to compensate for wear in the clutch and/or brake engagement surfaces of the device.