The invention discloses a passive permanent
magnet coupling transmission, braking or load device which is of a
petal-shaped rotary plate type,
petal-shaped rotary cylinder type or
petal-shaped composite type structure, wherein the passive permanent
magnet coupling transmission, braking or load device consists of at least one petal-shaped permanent
magnet coupling component, at least one driving rotor plate coupling mechanism, at least one driven rotor plate coupling mechanism and at least one permanent magnetic coupling radial telescopic displacement regulating mechanism, wherein the at least one permanent magnetic coupling radial telescopic displacement regulating mechanism is used for implementing the variation regulation of an air clearance coupling area and a coupling
pitch; the petal-shaped permanent magnet coupling component comprises a conductor armature type structure, a mouse cage armature type structure, a boiler grate armature type structure, a winding armature type structure, a dual-permanent-magnet type structure and a composite type structure, and a
refrigerant cooling device and a locking / clutching device are configured as required. The passive permanent magnet coupling transmission, braking or load device provided by the invention is suitable for the technical field of transmission of transmission shafts, the technical field of speed regulation, the technical field of braking, the technical field of
energy conservation and emission reduction, the technical field of load / uploading as well as the technical field of
cutting off / combination
motive power, and is used for designing the technical scheme for manufacturing related products of permanent magnet coupling driving, speed regulating, moment changing, braking or loading devices and the like.