MECHANISM DESIGN REPORT

Chassis Design

The Robot is a Differential Drive with a steel chassis as steel is strong and can hold the weight of heavy

items like victims in this case.

Mechanism Used

1) Traversal

i) Components Used

a) 4 Set of Wheels

b) 4 dc motors of 150 rpm each

ii) Mechanism

The Wheels will be connected to dc motors which will in turn be connected to the a common

rod through a simple suspension so that each wheel is free to move and cross obstacles

independent to the other wheels.

TOP VIEW

SIDE VIEW

2) LIFTING MECHANISM

i) Components used

a) 2 set of wheels

b) 2 caster wheels

c) 2 aluminium rods

d) 1 high torque dc motor

e) 1 dc motor of 100rpm

f) Hook

g) Pulley

h) High tension wire

TOP VIEW

ii) Mechanism

The base of lifting mechanism is mounted over the chassis using two aluminium rods with

parallel greaves to allow motion of the caster wheels .The rods are fixed over the chassis so that

they don’t move. The base of the lifting mechanism is connected to the aluminium rods using

two caster wheels. The base itself has two more wheels so as facilitate forward and backward

motion of the lifting mechanism. Hence the lifting mechanism is free to move over the chassis.

LIFTING MECHANISM SIDE VIEW

The hook is controlled by the high torque motor. The aluminium rods are firmly attached to the base

Caster wheels help in independent motion of the lifting mechanism over the chassis via wheels on the

base.