CN202094788U - Novel eddy current brake - Google Patents

Abstract

A new type of eddy current retarder, including a front rotor disc and a rear rotor disc, the front rotor disc and the rear rotor disc are respectively connected to the transmission shaft, a stator is arranged between the front rotor disc and the rear rotor disc, and the stator is fixed on the chassis , the stator is provided with a coil winding, and the polarity of each coil in the coil winding is alternately arranged to be positive and negative, and there are 10 coils, which are evenly arranged in a circular array on the stator. This new type of eddy current retarder changes the traditional retarder design concept, and adjusts the conventional retarder's 8 coil structure to 10, so that the layout circle of the coil can be enlarged, and the space of the retarder coil can be increased Occupancy, while ensuring that the inner hole inside the retarder is enlarged.

Description

A new type of eddy current retarder

technical field

The utility model relates to a novel eddy current retarder.

Background technique

The eddy current retarder is an auxiliary braking device for automobiles. The device is installed between the drive axle and the gearbox. It realizes non-contact braking through the principle of electromagnetic induction. It is a necessary supplement to the braking system, but it cannot replace the main Braking System. The eddy current retarder is generally composed of a stator, a rotor and a fixed bracket. When the retarder is working, the stator coil is energized to generate a magnetic field, and the rotor rotates with the transmission shaft. The rotor cuts the magnetic field lines generated by the stator, thereby generating a vortex-shaped induced current inside the rotor disk. In this way, the stator will apply an electromagnetic force to the rotor that hinders the rotation of the rotor, thereby generating a braking torque. At the same time, the eddy current circulates inside the rotor disk with a certain resistance, and the thermal effect of the resistance will convert the electric energy into heat energy. In this way, the kinetic energy of the vehicle will be converted into heat energy and dissipated through electromagnetic induction and resistance heating. When the car is running normally, although the rotor rotates with the transmission shaft at a high speed, since the coil is not energized at this time, the iron core has no magnetic field, so no braking torque is generated. If the coil passes the excitation current, several iron cores will generate several magnetic fields. Part of the magnetic flux passing through the iron core increases, and part of the magnetic flux leaving the iron core decreases, so that eddy currents are generated in the rotor disk, and the current-carrying rotor disk is subjected to force in the magnetic field, and its acting direction is opposite to the rotation direction of the rotor disk. The rotation of the rotor disk makes the eddy current retarder generate braking torque. The braking torque generated by the eddy current retarder can be adjusted by the excitation current control device. The greater the excitation current passing through the coil, the stronger the magnetic field, and the greater the braking torque.

The requirements for eddy current retarders for passenger cars under 9 meters in the Chinese market have the following characteristics: light weight requirements, small operating current requirements, and small volume requirements. Application requirements.

Utility model content

In order to solve the above problems, the utility model provides a novel eddy current retarder.

The technical scheme that the utility model adopts for solving its technical problem is,

A new type of eddy current retarder, including a front rotor disc and a rear rotor disc, the front rotor disc and the rear rotor disc are respectively connected to the transmission shaft, a stator is arranged between the front rotor disc and the rear rotor disc, and the stator is fixed on the chassis , the stator is provided with a coil winding, and the polarity of each coil in the coil winding is alternately arranged to be positive and negative, and there are 10 coils, which are uniformly arranged in a circular array on the stator.

The polarities of the two adjacent coils on the stator are set to be opposite. When the coils are connected with DC current, each coil generates a magnetic field, and the rotor assembly rotates at high speed with the transmission part of the vehicle to cut the magnetic force lines, generating reverse torque, and the generated resistance passes through the differential speed. The brakes are evenly distributed to the two rear wheels, so as to achieve the purpose of slowing down the vehicle.

The beneficial effect of the utility model is that the new eddy current retarder changes the traditional retarder design concept, and adjusts the conventional retarder from 8 coil structures to 10, so that the layout circle of the coils can be enlarged, and The space occupancy rate of the retarder coil can be increased, and at the same time, the inner hole inside the retarder is ensured to be enlarged.

Description of drawings

Fig. 1 is the structural representation of conventional eddy current retarder;

Fig. 2 is a structural schematic diagram of the eddy current retarder proposed by the utility model.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in combination with illustrations and specific embodiments.

As shown in Figure 2, the novel eddy current retarder proposed by the utility model includes a front rotor disc 211 and a rear rotor disc 212, the front rotor disc and the rear rotor disc are respectively connected with the drive shaft, and the front rotor disc and the rear rotor disc are connected to each other. The stator 220 is arranged between them, the stator 220 is fixed on the chassis, and the coil winding is arranged on the stator 220, and the polarity of the coil 221 in the coil winding is arranged alternately. The array is evenly spaced.

The polarities of the two adjacent coils on the stator are set to be opposite. When the coils are connected with DC current, each coil generates a magnetic field, and the rotor assembly rotates at high speed with the transmission part of the vehicle to cut the magnetic force lines, generating reverse torque, and the generated resistance passes through the differential speed. The brakes are evenly distributed to the two rear wheels, so as to achieve the purpose of slowing down the vehicle.

In the conventional eddy current retarder shown in FIG. 1 , a stator 120 is arranged between the front rotor disk 111 and the rear rotor disk 112 , and eight coils 121 are arranged on the stator 120 . The new eddy current retarder proposed by the utility model changes the traditional retarder design concept, and adjusts the 8 coil structures of the conventional retarder to 10, so that the layout circle of the coils can be enlarged, and the retarder can be increased The space occupancy rate of the retarder coil is improved, and at the same time, the inner hole inside the retarder is ensured to be enlarged.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (1)

1. novel current vortex retarder, rotor disk and back rotor disk before comprising, preceding rotor disk is connected with power transmission shaft respectively with the back rotor disk, be provided with stator between preceding rotor disk and the back rotor disk, stator is fixed on the chassis, and stator is provided with coil windings, the polarity of each coil is positive and negative in the coil windings is arranged alternately, it is characterized in that described coil is provided with 10, evenly arranges by circular array on stator.

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