Disk type water cooling self-excited eddy current retarder

Abstract

The invention discloses a disk type water cooling self-excited eddy current retarder, which comprises a stator component, a rotor component, a drive shaft and a cooling water circulating device, wherein the stator component is composed of two stator disks and a plurality of permanent magnetic field generating devices; a cooling water channel is disposed in each of the stator disks; two permanent magnets and a partition board are disposed in a cavity of a magnetic conductive sleeve in each of the permanent magnetic field generating devices, and the two permanent magnets are so arranged that magnetic poles are in opposite directions; the partition board is fixedly adhered to a cylinder which is formed between the two permanent magnets, corresponds to the cavity of the magnetic conductive sleeve, and is capable of rotating along a central shaft of the magnetic conductive sleeve; and a through groove port which faces an armature is formed on the side wall of the magnetic conductive sleeve; when a retarder is in a work state, magnetic lines of force of permanent magnetic fields form a magnetic field loop through the two permanent magnets, the magnetic conductive sleeve, an air gap and the armature; and when the retarder is in a non-work state, magnetic lines of force of magnetic fields form a magnetic conductive loop through the two permanent magnets and the magnetic conductive sleeve; current is provided for magnetic exciting coils by a self-generating device, therefore, no vehicle-mounted power supply is needed to provide power; and cooling liquid can take away partial heat generated when the retarder brakes.

Description

technical field [0001] The invention relates to an electric eddy current retarder for automobiles, in particular to a self-excited electric eddy current disc retarder. Background technique [0002] The eddy current retarder is a new type of non-contact auxiliary braking device, which has many advantages compared with the traditional brake. The use of the retarder can significantly improve the braking performance of the car and improve the safety of the car; The sharp noise and dust pollution caused by traditional braking can also prolong the service life of brake pads and tires; the eddy current retarder has simple structure, low manufacturing cost, short response time and easy control of braking torque. Therefore, eddy current retarders are increasingly used in heavy vehicles, trucks and luxury passenger cars. However, the eddy current retarder has a large volume and weight and poor heat dissipation. During continuous operation, the braking performance of the retarder will...

AI Technical Summary

Problems solved by technology

[0005] In view of the problems existing in the prior art, the present invention provides a disc-type water-cooled self-excited eddy current retarder, which does not need an external power supply to provide current, and relies on its own power generation device to provide excitation current to the excitation coil, without Loss of vehicle power supply, and at the same time, it can solve the problem of heat decline caused by excessive temperature rise. The liquid cooling method is adopted, and part of the heat generated during braking is taken away by the cooling water, which improves the service life

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