Rotor cooling type automobile permanent magnet liquid cooling retarder

Abstract

The invention provides a rotor cooling type automobile permanent magnet liquid cooling retarder, belonging to the technical field of baking. The rotor cooling type automobile permanent magnet liquid cooling retarder comprises a stator, a rotor and a cylinder, wherein the stator comprises a left end cover, a stator hub, a permanent magnet, a magnet retainer and a right end cover; the permanent magnet is uniformly fixed on the magnet retainer, the magnet retainer is connected with the stator hub and slides axially, the rotor is connected with the transmission shaft and rotates along with the transmission shaft; the cylinder is fixed on the right end cover and is connected with the magnet retainer to control the magnet retainer to slide axially; the transmission shaft is connected with the stator and drives the rotor to rotate in the retarder; the stator and the transmission shaft can form an enclosed space and cooling liquid flows in the retarder, so the rotor can be directly cooled. in the invention, liquid cooling is carried out on the rotor in the retarder, thus generating a good heat dissipation effect; the permanent magnet is fixed at the radial inner side of the magnet retainer without rotating, thus having high security; the control on brake moment is simple, reliable and gradable; and the retarder provided by the invention has simple structure and high functional reliability and is easy to manufacture.

Description

technical field [0001] The invention belongs to an auxiliary brake device for automobiles. A permanent magnet is used as a brake magnetic source to generate a brake torque through the relative rotation between a non-contact rotor and a stator. Background technique [0002] Vehicle retarder is a kind of vehicle auxiliary braking device. The currently widely used retarders are mainly hydraulic retarders and electric eddy current retarders. In view of the shortcomings of the hydraulic retarder and the eddy current retarder, a permanent magnet retarder has appeared. They all use a non-contact method to apply the braking torque to the drive shaft to brake the car and reduce the speed of the car. . [0003] As a new generation of retarder, the permanent magnet retarder has the advantages of compact structure, light weight, no copper consumption, maintenance-free, and almost no power consumption during work. However, the air-cooled permanent magnet retarder has the problem of se...

AI Technical Summary

Problems solved by technology

The permanent magnet in the retarder rotates at high speed with the transmission shaft, and the magnet holder is connected to the cylinder through bearings, so that the magnet holder can slide axially while rotating with the transmission shaft. These structures make the structure of the retarder complex and difficult to assemble. Poor performance, high manufacturing cost, poor work reliability

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