Electromagnetic retarder and control method of autocar wheel side

Abstract

The invention discloses an electromagnetic retarder arranged on autocar wheel side and a control method thereof. A shaft coupling is arranged on a transmission shaft; the shaft coupling is connected with a semi shaft of an autocar; a rotatable slewing journal and a brake disc are sleeved outside the transmission shaft; an iron core winded with a winding and a friction detent provided with an ABS are fixed on the slewing journal; a rotation disc face of the brake disc is positioned in the iron core; and the winding is connected with an operation handle by a controller. The controller receives brake signals of the operation handle and speed signals fed back by a sensor, judges that whether the autocar has an emergency brake or a non-emergency brake, emits signals to control the size of current led to the winding during the non-emergency brake, and emits signals to control the size of current led to the winding and the size of liquid pressure of the friction detent during the emergency brake. The brake disc generates brake force opposite to the rotation direction when rotating in the winding. The invention can reduce action times of the detent, reduces temperature rise of the friction detent, and enhances the performance of a brake system and the road security.

Description

technical field [0001] The invention relates to a retarder applied to the braking system of a modern car, in particular to a retarder installed on the wheel of a car, and in particular to an electromagnetic retarder which uses electromagnetic principles to generate braking torque. Background technique [0002] In the prior art, cars are generally equipped with a hydraulic braking system, in which disc brakes are mostly used, which reduce the speed of cars by friction between friction plates and brake discs to achieve vehicle braking. Since disc brakes work under the condition of high-speed emergency braking of cars, not only harsh noises will be generated, but also the wear of the friction plates is relatively large, and the braking effect is not as good as low-speed braking; Under braking conditions, the driver needs to continuously step on the brake pedal with low intensity. With the continuous contact and friction between the friction plate and the brake disc, the tempera...

AI Technical Summary

Problems solved by technology

Since disc brakes work under the condition of high-speed emergency braking of cars, not only harsh noises will be generated, but also the wear of the friction plates is relatively large, and the braking effect is not as good as low-speed braking; Under braking conditions, the driver needs to continuously step on the brake pedal with low intensity. With the continuous contact and friction between the friction plate and the brake disc, the temperature of the brake will rise, and thermal decay will occur, which will reduce the performance of the brake. and safety features

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