rocker bogie robot mechanical engineering.pptx

Engg mechanical

1. Pravara Rural Engineering College, Loni A Project Stage I Presentation on “Design & Manufacturing of Rocker Bogie Robot ” Presented By 1.Mr . 2.Mr . 3.Mr . 4.Mr. Under The Guidance of Prof . Dept of Mechanical Engg . 2018-19

2. INTRODUCTION The place, where the value of gravity remain lower than earth’s own gravitational coefficient , at that place the existing suspension system fails to fulfil desired results as the amount and mode of shock absorbing changes. To counter anti-gravity impact, NASA and Jet Propulsion Laboratory have jointly developed a suspension system called the rocker-bogie Suspension system.

3. Rocker-Bogie mechanism The rocker-bogie mechanism consists of rocker that attached to a frame and a bogie that connects to rocker link with pivot joint as shown in figure. The main advantage of this mechanism is no suspension required, and total loads are distributed equally over all wheels. These ensure even working condition all wheels and prevents from excessive sinkage of a wheel in a soft terrain (muddy ).

4. Terminology Rocker : It describes the rocking aspect of the larger links present each side of the suspension system and balance the bogie as these rockers are connected to each other and the vehicle chassis through a selectively modified differential. one end of a rocker is fitted with a drive wheel and the other end is pivoted to a bogie which provides required motion and degree of freedom. Bogie: “bogie ” refers to the conjoining links that have a drive wheel attached at each end. Bogies were commonly used to bare loading as tracks of army tanks as idlers distributing the load over the terrain. Bogies were also quite commonly used on the trailers of semi-trailer trucks as that very time the trucks will have to carry much heavier load.

5. LITERATURE SURVEY Nitin Yadav1, BalRam Bhardwaj2, Suresh Bhardwaj3, “Design analysis of Rocker Bogie Suspension System and Access the possibility to implement in Front Loading Vehicles”, Volume 12, Issue 3 Ver. III (May. - Jun. 2015), IOSR-JMCE

6. “Contact angle estimation and composite locomotive strategy of astair -climbing mobile platform” Heeseung Hong a, DongmokKim a, HwaSooKim b,n , SeokwooLee a, JongwonKim a, (2013)367–381, science Direct

7. “Optimal design and kinetic analysis of a stair-climbing mobile robot with rocker-bogie mechanism” Dongmok Kim a, Heeseung Hong a, Hwa Soo Kim b, Jongwon Kim a Mechanism and Machine Theory 50 (2012) 90–108,Science direc t.

8. METHODOLOGY Step 1:- Identification of problem Step 2:- Literature Survey Step 3:- Design of layout & mechanical part Step 4:- Brought our material. Step 5:- Manufacturing processes. Step 6:- Running of project

9. PROPOSED SYSTEM DESIGN FRONT VIEW

10. ADVANTAGES 1. No need of special suspension system like Spring. 2. Power available to all wheel hence easy to drive on irregular road surface DISADVANTAGES 1. Cost increases as motor is available to all wheel .

11. APPLICATION The application of our project is that it can be used in villages at where roads are not available properly. Also used at place of mountains to carry the luggage’s of tourists. We have to make model of that mechanism which can climb the staircase of building also. And the main scope of this mechanism is that it can be used at planet for research purposes by some advanced technology

12. CONCLUSION In our project we have to climb the obstacles or ride on the abnormal surface with the help of such a rocker bogie mechanism. This mechanism serves our objective because of its nature of allowing flexibility in linkages when wheel climb or goes from the abnormal road surface. Hence we does not need extra suspension arrangement. Also series of mobility experiments in the agriculture land, rough roads, inclined, stairs and obstacles surfaces concluded that rocker bogie can achieve some distance traverses on field.

13. References “Design analysis of Rocker Bogie Suspension System and Access the possibility to implement in Front Loading Vehicles”, Nitin Yadav1, BalRam Bhardwaj2, Suresh Bhardwaj3, Volume 12, Issue 3 Ver. III (May. - Jun. 2015), IOSR-JMCE “Contact angle estimation and composite locomotive strategy of astair -climbing mobile platform” Heeseung Hong a, DongmokKim a, HwaSooKim b,n , SeokwooLee a, JongwonKim a, (2013)367–381, science Direct “Optimal design and kinetic analysis of a stair-climbing mobile robot with rocker-bogie mechanism” Dongmok Kim a, Heeseung Hong a, Hwa Soo Kim b, Jongwon Kim a Mechanism and Machine Theory 50 (2012) 90–108,Science direct.

14. THANKS