| 摘要 |
FIELD: the invention refers to the field of electric technique. ^ SUBSTANCE: it is designed for application in electric drives of lifting mechanisms particularly in an execution mechanism for sinking and lifting of the rods of the emergency protection of an atomic reactor of the RBMK type. The invention is designed for obtaining of a reliable non contact electric car for creation of a breaking torque dependable from the direction of rotating in the absence of supply voltage. The essence of the invention is in the following. The winding of the non contact electric car having an inductor with constant magnets and an anchor without grooves is fulfilled in the shape of a bushing connected with the anchor with the help of screw grooves and lugs, providing a pivotal travel of the bushing in a working gap. ^ EFFECT: The proposed arrangement provides effective braking and consequently sinking of the load at a safe speed at falling in cases of refusal of the electric drive of the lifting mechanism and creates negligible braking torque at its lifting. ^ 5 dwg |
