OVERHAUL MECH DESIGN
SUBMITTED BY:VIPASHA
CHASIS DESIGN 1.Wooden framework 2.Basic Differential Drive 3.Conveyer Belt(covering the whole wheels) with suspensions. 4.Arm and a gripper for picking objects.  LOCOMOTION MECHANISM 
1.consists of conveyer belt and six wheels (two of different size )for stability and making locomotion
possible on all different terrain. 2.motors will be attached to the first and last wheel. 3.rest four wheels are connected through suspensions.
SPECIAL FEATURE OF SUSPENSIONS 1.Suspensions will be connecting the middle four wheels. 2.As soon as some rough terrain comes and the bot encounters some pebble or rocky thing then by the use of suspension that wheel is lifted and then the conveyer belt helps to move the bot.
3.This really helps the bot especially on terrains with pebbles.
 GRIPPING MECHANISM 1.As it has to clutch victims and joints so there is no other way then to use arm with a gripper at the end. 2.We would be using 5 motors for the robotic arm.  Working of various motors 1.MOTOR 1-It will make the arm backward and forward i.e. rotation in any sense in the plane of paper. It actually helps in lowering and lifting the whole arm. 2.MOTOR 2-This MOTOR will be embedded vertically on the arm and will help in 360 degree rotation of the arm so that it can pick up victims and place them on the back side. 3.MOTOR 3-This motor helps in lowering and releasing further extent of the arm. 4.MOTOR 4-This motor has been used to give clutch at the end of the arm a 360 degree rotation ,so that it can pick the victim at any angle. This is very important because if it has to rotate the joint to place it correctly then this can be done quite well in that case. 5.MOTOR 5-This motor has been used to open and close the clutch at the end of the arm. As soon as the bot encounters a joint or a victim it would open the clutch and then would close it down to grip the object.
BASIC DESIGN-
GRIPPING OF VICTIMS AND JOINTS First the 2nd motor will rotate and will place the arm on correct position then the 1st arm would rotate to lower the arm and bring it near to the victim. Next the motor 3 would co-ordinate with 2nd and bring the arm closer to the bot,the 4th motor will rotate then to bring the clutch in proper orientation with the object to grip. Then finally the 5th motor will work to open the clutch and then close it down after gripping the object.