Disc type hysteresis dynamometer

Abstract

The invention provides a disc type hysteresis dynamometer. The dynamometer comprises a bottom plate, a speed measuring disc sensor, a speed measuring disc, a shell, a bracket, a left mounting cover, an inner stator, an outer stator, a rotor combination, a right mounting cover and a coil; the rotor combination comprises a shaft and a rotor, wherein the rotor is embedded in the inner stator, the shaft penetrates through the axis of the rotor, the rotor is in a disc shape, the inner stator on the left side and the right side of the rotor is respectively provided with a tooth groove structure, anda gap between the rotor and the inner stator is formed through the tooth groove structures. The dynamometer has the advantages that the rotational inertia of the rotor is reduced, the high-speed rotation of the rotor is realized, the 2% torque fluctuation of a common disc-type hysteresis dynamometer is overcome, and the output of constant torque is realized.

Description

technical field [0001] The invention relates to the field of dynamometers, in particular to a disk-type hysteresis dynamometer. Background technique [0002] The hysteresis dynamometer currently used has a cup-shaped rotor and a stator with internal and external teeth, and the moment of inertia generated during the test is large. [0003] The torque of the hysteresis dynamometer is proportional to the excitation area, that is, the larger the generated torque, the larger the rotor. When running at high speed, because the rotor of the hysteresis brake is cup-shaped, the rotor will generate a moment of inertia when the rotor rotates. The larger the outer diameter of the rotor, the larger the inertia torque. It is deformed under the action of tension, and the rotor becomes larger and deformed in the process. Because the magnitude of the torque generated by the hysteresis dynamometer is directly related to the magnetic gap between the stator and the rotor, the smaller the magne...

AI Technical Summary

Problems solved by technology

The hysteresis brake is a process of converting heat energy into kinetic energy. The rotor generates a lot of heat when it is working. Due to the existence of inertia moment, the rotor is easier to bend when running at high speed, which changes the magnetic gap between the rotor and the stator. The torque generated by the hysteresis brake fluctuates. When the hysteresis brake reaches a certain slip power, because the rotor reaches a certain amount of heat, the rotor undergoes excessive deformation under tension, causing the rotor to rub against the stator and damage the hysteresis brake.

Moreover, the hysteresis brake rotor is hollow cup-shaped, which is not only expensive but also complicated and difficult to process.

Due to the existence of the moment of inertia, the speed of the hysteresis dynamometer itself is limited

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