8/8/2019 Mechanical Design of Autonomous All Terrain Robot

1/17

MECHANICAL DESIGN OF AN AUTONOMOUS ALL TERRAIN ROBOT

GUIDED BY:Mr.T.MATHAVARAJ RAVIKUMAR

BY,R.NIRANJAN KUMAR

T.PRABHAKARAN

A.VIGNESH NAGAPPANM.VENGATNATHAN

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

2/17

INTRODUCTION Autonomous Robots perform desired taskswithout human intervention

All Terrain Autonomous Robot designed to take

part in military assignmentsThe robot should navigate through

y G ravelsy Sand and Mudy

Corrugationsy Slopey Hazardous Area

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

3/17

MECHANICAL STRUCTURE

It consists of:y Chassis

y Main frame

y Base frame

y Transmission unit

y Wheel block

y Track belt

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

4/17

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

5/17

CHASSIS

Structure consists of L-shaped frame

Slightly tapered to hold leading wheel

Main wheels connected to base frame

Main frame is used to carry payload

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

6/17

WHEEL BLOCK

It consists main wheel, leading wheel, rollerwheel

Vulcanized rubber material is used for track belt

Wheels are made up of Nylon material

This belt avoids slippage

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

7/17

EN G INE

TYPE : 2-stroke

DISPLACEMENT : 35 cu.cm

COMPRESSION RATIO : 8.0:1

MAX OUTPUT : 1 hp

MAX TORQUE : 1.0 N-m

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

8/17

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

9/17

TRANSMISSION CALCULATION

Distance covered by main wheel per revolution:2*3.14*0.1 = 0.628 m

Distance covered by robot in one min at engine speed

of 3000rpm is 0.628*100 = 62.8m/min

Speed of robot at engine speed 3000rpm: 3.768 km/hr.

Hence the payload greater than 75kg can be easilycarried.

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

10/17

CENTRIFUGAL CLUTCH

It engages when engine speed reaches 1000 rpm

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

11/17

REDUCIN G G EAR

It reduces the speed in the ratio 10:1It transmits the power to the Differential unit

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

12/17

BRAKIN G UNIT

Drum Brake is usedFitted to the main driving wheel

Actuated by solenoid

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

13/17

WORKIN GEngine power is transmitted to the clutch by using V-belt

Then from clutch, it is transmitted to gear reductionbox, speed reduction is about 10:1

Now transmitted to the differential unit, speedreduction is about 3:1

Therefore, from engine to driving wheels speedreduction is about 30:1 and hence more torque isproduced

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

14/17

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

15/17

RESULTS

Tested in all sorts of terrain and achieved easytraction

It withstands for payload about 80 kg

Slight vibration is produced by the Engine

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

16/17

CONCLUSION

A Robot that can navigate in all terrain andcontaminated environment is developed

This robot enables easy navigation and goodsurveillance system

Remote monitoring can be done by mounting

vision cameras in the robot

8/8/2019 Mechanical Design of Autonomous All Terrain Robot

17/17

THANK YOU