Brake integrating rotary barrel type eddy current retarder and drum brake

An eddy current retarder, drum brake technology, applied in drum brakes, brake types, electric braking systems, etc., can solve the problems of safety hazards in drum brakes, avoid brake thermal failure, reduce harmful Dust and brake noise, fast response effect

Active Publication Date: 2013-05-08
BAOHUA SEMI TRAILER FITTINGS CO LTD ZHENJIANG CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, drum brakes are a safety hazard

Method used

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  • Brake integrating rotary barrel type eddy current retarder and drum brake
  • Brake integrating rotary barrel type eddy current retarder and drum brake

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Embodiment Construction

[0015] see Figure 1-2 As shown, the present invention integrates the eddy current retarder on the traditional drum brake. Keep the original friction brake assembly (including brake drum, brake shoe, etc.). The invention consists of a friction brake part and an eddy current retarder part. The friction braking part includes a brake drum 4 , a friction lining 5 and a brake shoe 6 . The eddy current retarder part includes heat sink 1 , retarder outer rotor 2 , excitation coil 3 with iron core and coil support 7 . Wherein, the brake drum 4 of the friction braking part is also the retarder inner rotor of the eddy current retarder part.

[0016] The outer rotor 2 of the retarder, the brake drum 4 and the coil support 7 with a circular cross section are coaxial, and the coil support 7 is located between the outer rotor 2 of the retarder and the brake drum 4 . The outer surface of the retarder outer rotor 2 is the retarder cooling fin 1, and the retarder cooling fin 1 and the reta...

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Abstract

The invention discloses a brake integrating a rotary barrel type eddy current retarder and a drum brake, wherein the brake is used for braking and speed reduction of an automobile. A retarder outer rotor, a brake drum and a coil support are coaxial, and the coil support is located between the retarder outer rotor and the brake drum. A plurality of magnet exciting coils provided with iron cores are fixed on the coil support and are evenly distributed along the circumferential direction of the outer circle of the brake drum, the axial leads of the magnet exciting coils are located in the radial direction of the brake drum, and first gas intervals are formed between the magnet exciting coils and the retarder outer rotor, and second gas intervals are formed between the magnet exciting coils and the brake drum. Two adjacent magnet exciting coils provided with the iron cores, facing to the same gas interval, are opposite in polarity. When the automobile speed is low, a brake shoe enables a friction liner to be pressed towards the brake drum to achieve friction braking; when the automobile runs at a normal automobile speed, the magnet exciting coils are powered on to produce electromagnetic braking torque to reduce the automobile speed, and then the automobile is braked through friction. When the automobile speed is high, electromagnetic braking and friction braking act in a combined mode. Braking thermal failure is avoided, and safety performance of automobile braking is improved.

Description

technical field [0001] The invention relates to an automobile brake, which brakes and decelerates the automobile, in particular a drum-type electric eddy current retarder which utilizes the electromagnetic principle to generate the braking torque and integrates a drum brake which utilizes the friction principle to generate the braking torque brakes. Background technique [0002] Traditional automotive friction brakes are divided into two types: disc brakes and drum brakes, which use the friction between the brake pads and the brake disc or drum to reduce the speed of the vehicle and eventually stop the vehicle. Braking under the condition of high-speed driving of the vehicle will not only wear the brake shoes of the drum brake severely, but also produce a lot of harmful dust. At the same time, a lot of noise is generated. The braking efficiency of the drum brake is greatly affected by the friction factor, and the braking efficiency is relatively unstable. When the car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D51/20B60L7/28
Inventor 顾晓丹何仁时俊汤宝
Owner BAOHUA SEMI TRAILER FITTINGS CO LTD ZHENJIANG CITY
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