EDDY CURRENT DECELERATION DEVICE EQUIPPED WITH POWER GENERATION FUNCTION

摘要

An eddy current retarder with an electricity generating function includes a brake drum (1), a magnet retention ring (2), and a turning switch mechanism. The brake drum (1) is fixed to a rotating shaft (10). The magnet retention ring (2) is arranged inside the drum (1) and retains permanent magnets (3) at regular intervals entirely in a circumferential direction such that the permanent magnets (3) face the inner peripheral surface of the drum (1). The turning switch mechanism includes switch plates (4) that switch, during braking, to a state in which magnetic circuits develop between the magnets (3) and the drum (1), and switch, during non-braking, to a state in which no magnetic circuits develop. Protrusions (1c) are provided on an end face (1b) of the drum (1) at regular intervals entirely in the circumferential direction. Electricity generating coils (8) are provided in a non-rotating part of a vehicle at regular intervals entirely in the circumferential direction such that the electricity generating coils (8) face the regions of the end face (1b) of the drum (1). During braking, the positions of the magnets (3) coincide with the positions of the coils (8) in the circumferential direction.