Electromechanical-hydraulic composite brake device of hub motor type heavy-duty vehicle

Abstract

The invention discloses an electromechanical-hydraulic composite braking device of a hub motor type heavy-duty vehicle, which comprises a planetary gear system, a friction brake, a motor and a hydraulic retarder, and the planetary gear system comprises a planet carrier, a sun gear, a ring gear and a plurality of Planetary gear, the planetary gear is set between the sun gear and the ring gear, and meshes with the sun gear and the ring gear respectively, the ring gear is fixedly connected with the hub, the planetary gear is also installed on the planet carrier, the planet carrier is fixed, and the friction brake It includes a brake caliper body, a friction block set and a brake disc. The brake disc is fixedly connected to the wheel hub. The friction block set is installed on the brake caliper body and cooperates with the brake disc. The hydraulic retarder has a driving wheel, The fixed wheel and the casing are fixedly connected with the casing, one end of the rotating shaft of the motor is connected with the driving wheel through an electromagnetic clutch, and the other end of the rotating shaft of the motor is fixedly connected with the sun gear. The invention not only combines the functions of the friction brake, the regenerative braking of the motor and the hydraulic retarder, but also can eliminate the air loss energy consumption of the hydraulic retarder.

Description

technical field [0001] The invention relates to an electromechanical-hydraulic composite brake device of a hub motor type heavy-duty vehicle, belonging to the technical field of vehicle brakes. Background technique [0002] At present, when the in-wheel motor type heavy-duty vehicle brakes continuously for a long time, with high-intensity braking or frequent braking, the temperature of the brake disc or brake drum will increase significantly, resulting in a decrease in the friction factor and aggravated wear, resulting in brake failure. Dangerous thermal decay with partial or total loss of efficacy. Although the application of anti-lock brake system (ABS) and electronic brake force distribution system (EBD) has improved the stability and reliability of vehicle braking, they have little effect on the thermal fading phenomenon of brakes. At present, many countries including my country have clearly stipulated that passenger cars and trucks above a certain specification must be...

AI Technical Summary

Problems solved by technology

However, the retarding braking torque of this hydraulic retarder acting on each wheel cannot be independently adjusted, and requires an oil-water heat exchanger and its connecting pipes with the engine cooling system, which is relatively large in size, high in cost and difficult to assemble. relatively difficult

Since the wheel hub motor load vehicle cancels the transmission system and engine of the traditional load vehicle, the above-mentioned hydraulic retarder is not suitable for the hub motor load vehicle

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