BUTTON OPERATED GEAR SHIFTING MECHANISM IN FOUR WHEEL

BUTTON OPERATED GEAR SHIFTING MECHANISM
It is used for operate gear by using a single button so that disabled person can run the vehicle

1. BUTTON OPERATED GEAR SHIFTING MECHANISM SUBMITTED TO:- SUBMITTED BY:- Mr.Vishal Anand GROUP MEMBER Asst Professor SEC-A Department of Mechanical Engg

2. PROJECT STAGE-II PROJECT BY:- ABHISHEK BAIRWA(7ME-05) ABU REHAN UMAR(7ME-09) ANIS AHMAD(7ME-23) ANIS AKHTER(7ME-24) FAIZ ALAM(7ME-50) GUIDED BY:- Asst Prof. ARVIND KUMAR SINGH Department of mechanical engineering JNU Jaipur

3. INDEX ABSTRACT INTRODUCTION COMPONENT DESIGN AND CALCULATION CONSTRUCTION WORKING ADVANTAGE DISADVANTAGE CONCLUSION REFERENCES

4. ABSTRACT There are disclosed a button operated gear change control apparatus for an automobile and a method of controlling such apparatus. A rotational output between two gears of a hollow shaft is connected to d.c motor. When a gear shifting-up of an automatic transmission is to be effected, the load applied by the load device is increased, or the load is connected to an output rotation shaft of the engine via a selectively-connecting device.

5. INTRODUCTION A gear shifting mechanism is designed and applied to make the shifting process more expeditious and less destructible for the driver. This project aims to ameliorate gear shifting process utilizing contrivances as: a manual four speed gear box, two pneumatic double acting cylinders, two pneumatic two position five ways directional control valves, , an electrical motor, a belt, two pulleys, limit switches, push buttons, bulbs, a table (holder) and power supply.

6. According to suggested gear shifting mechanism the driver can cull the transmission gear ratio without moving his hands from the steering wheel by putting the gear shifting push buttons on the steering wheel. The development has concluded withal the gearbox, which became much smoother and engenders less noise.

7. COMPONENT LIST MOTOR A DC motor is any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy.

8. SOLENOID A solenoid valve is an electromechanically operated valve. The valve is controlled by an electric current through a  solenoid.

9. PNEUMATIC CYLINDER Pneumatic cylinder are  mechanical devices which use the power of compressed gas to produce a force in a reciprocating linear motion. Like hydraulic cylinders, something forces a piston to move in the desired direction.

10. GEAR A gear  is a rotating machine part having cut  teeth , which mesh with another toothed part to transmit torque. Geared devices can change the speed, torque, and direction of a power source.

11. BATTERY  lead-acid batteries are widely used inautomobile starting , lighting and ignition its ability to supply high surge currents means that the cells have a relatively large power-to-weight ratio. These features, along with their low cost, makes it attractive for use in motor vehicles to provide the high current required by automobile starter motors.

12. BEARING A  bearing  is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts.

13. DESIGN Frame size=18*26 inch Height of frame=20inch Outer Diameter of Bearing (D) = 35 mm Thickness of Bearing (B) = 12 mm Inner Diameter of the Bearing (d) = 15 mm Length of shaft=70 inch Diameter of shaft=1 inch Big gear= 80 pitch circle diameter Small gear= 20 pitch circle diameter D.C motor=12v,2amp Maximum Speed of motor = 180rpm Gear ratio=no of teeth on big gear/no of teeth on small gear 80/20=4

14. CONSTRUCTION The two solenoid valves are connected to a compressor with the avail of hoses of ∅6mm from which pressurized air is extracted. The solenoid valves are followed by two pneumatic cylinders with the avail of air hoses. The cylinders are followed by a clutch pedal. Contiguous to the clutch pedal gear box and a motor arrangement is present. The construction withal includes a proximity sensor which senses the haste of the wheel. The precise signals are sent to the solenoid valves by the control unit through the relays. Ergo the input is speed of the wheel sensed by a sensor and the output is shifting of gear accordingly. The puissance to the control unit is supplied from the 12V battery as well the shifting of gear monitored on an LCD. It withal consists of DC motor, ATMEGA Development board, speed regulator (expeditor), transformer

15. WORKING PROCEDURE The pneumatic circuit is as shown in fig, the motor is started to drive the main shaft initially the gear box is in neutral i.e., the output shaft is stationary condition. When the 5/2 way direction control valve -1 is operated the cylinder -1 operates the piston to move in the right hand direction thereby bringing the 3rd gear into engagement, and thus the output shaft starts to rotate thereby transmitting power from the input ( motor/engine) to the output ( differential). Electro-Pneumatic gear shifting mechanism

16. BLOCK DIAGRAM

17. ADVANTAGE It requires simple maintenance cares. The safety system for automobile. Checking and cleaning are easy, because of the main parts are screwed. Easy to Handle. Low cost automation Project. Repairing is easy. Replacement of parts is easy.

18. DISADVANTAGE Initial cost is high. The system is complicated one. Battery should be charged all time. Gear breaking possible.

19. CONCLUSION The project presented has involved the development and implementation of automatic transmissions for bikes and cars. The motivation of this work is to implement this idea in clutch featured bikes with a suitable clutch control. The automatic transmission can be also used in 5 and 6 speed versions by altering few changes in the program. According to the achieved results the mechanism done is reliable if it is installed in bikes and cars and very helpful for handicapped because the gear is changed by the help of button not by lever.

20. REFERENCES P. Alexander M.E, T. Sudha M.E, M. Omamageswari M.E, “Automatic Gear Transmission in Two Wheelers using Embedded System”, J of IJARET, Volume 3, Issue 2, July-December (2012), pp. 164-175 . Pettersson , M.; Nielsen, L. Gear shifting by engine control. IEEE Trans. Control Syst. Technol. 2000, 8 , 495–507. Inalpolat . M. and A. Kahraman , 2008. “Dynamic modelling of planetary gears of automatic transmissions. Proc. I Mech E Part D”, J. Automobile,Eng ., 222: 229-242. Glielmo , L., L. Lannelli and V. Vacca , 2006. “Gearshift control for automated manual transmissions”, IEEE/ASME Tran. Mech., 11(1): 17-25.

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