Knorr-Bremse Gmbh

Erling R Persson

Lars B Axelsson

Brake linkage for vehicle friction brakes is actuated by a brake power motor (6) and comprises a vent play regulator (10) having an adjustment element driven by an auxiliary motor (14). At the start of braking, the auxiliary motor (14) is actuated in advance of the brake power motor (6), causing application of the vehicle friction brake through the adjustment element. The brake power motor is then activated and tightly clamps shut the friction brake. The brake linkage is particularly suitable as a brake clamp (5) for disc brakes, the vent play regulator then being integrated into the pull rod (11).

Brake linkage for vehicle friction brakes

A spring-loaded brake cylinder has a slideable braking piston one side of which is acted upon by a first spring in the braking direction and a second side acted upon by air under pressure in the release direction against the force of the spring. There is a releaseable mechanical coupling between the braking piston and a piston rod upon which is mounted a quick-acting piston. The quick-acting piston is actuated by air. The position of the braking piston controls a supply of air to and a discharge of air from the quick-acting piston so as to achieve pressurization and depressurization of the quick-acting piston.

Spring-loaded brake cylinder

A brake unit for automatically adjusting slack between the brake surfaces of a railway brake has a pre-stressed spring which is released during the initial stroke of the brake piston in a braking application so as to expedite contact of the brake surfaces. After slack has been overcome, further movement of the piston in the braking direction will cause the force-transmitting components to be coupled together so that braking force is transmitted directly to the brake surfaces by subsequent movement of the piston in the braking direction. The release of the pre-stressed spring during the overcoming of slack in the brake rigging will increase the speed of the brake application with respect to the speed of the braking piston.

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Staffanstorp, Sweden

Erling R Persson