DESIGN AND FABRICATION OF ELECTRO MAGNETIC BRAKING

SYSTEM

GUIDE: Mr.C.SUBRAMANIYAN ,M.E.,

(Assistant professor)MEMBERS:

R.Vijayaraman V.Muruganandam

T.Anandha babu A.Siva

INTRODUCTION: Electromagnetic brakes have been used as

supplementary retardation equipment in addition to the regular friction brakes on heavy vehicles.

We outline the general principles of regular brakes and several alternative retardation techniques in this section.

The working principle and characteristics of electromagnetic brakes are then highlighted.

BASIC PRINCIPLE:

Whenever the current carrying conductor cuts the magnetic field, the “e.m.f” (Electro magnetic force) is induced.

MAIN PARTS OF THE BRAKING SYSTEM:

Battery (7Ah, 12V)

Relay switch.

Brake shoes.

Wheel hub.

Battery Relay switch

WORKING: There are three parts to an electromagnetic

brake: Relay switch, Brake shoes, and hub (which is the input on a brake).

The electric supply from the battery is given to the brake shoes through the relay switch when the brake pedal is pressing.

Then the brake shoes get magnetized. So when the brake shoes is attracted to the

hub, the stopping torque is transferred into the hub housing and into the wheel decelerating the load. This can happen very fast (1-3sec).

The amount of torque produced T = 4136.52 N-m Disengagement is very simple. Once

the relay switch starts to degrade flux falls rapidly and the brake shoes separates.

A spring(s) hold the brake shoes away from its corresponding contact surface at a predetermined air gap.

HUB AND BRAKE SHOE ASSEMLY:

COST ESTIMATION: Battery (12volt) - 700

Wheel and brake shoe - 500

Relay switch - 150

Assembly (brake shoe) - 150

Contd……

Frame assembly (stand) - 300

Paint - 150

Others - 150

Total - 2100

ADVANTAGE:

Easy to construction. Low cost. Efficient braking method. Engagement time is very less. Easy to Engage and Disengage.

APPLICATION:

This method is applicable for both four wheeler and two wheeler.

CONCLUSION:

It is conclusion of our project , Brake applied by using the ‘Electro Magnetic Induction’ principle.

Our project has provided us an excellent opportunity to observe our skills.

Also give us confidence to face any challenge in tech globalize competitive world.

REFERENCE:

Flemming, Frank; Shapiro, Jessica (July 7, 2009).”BASICS OF ELECTROMAGNETIC CLUTCHES” (PDF).

R.B.Gupta (sep 5, 2008). ”AUTOMOBILE ENGINEERING”.

Retrieved from http://en.wikipedia.org/wiki/electromagnetic brake.

BRAKE SHOE CONNECTION:

PROTOTYPE: