Design and Analysis of Multipurpose Agriculture Vehicle

The main aim of the project is to develop multipurpose agricultural vehicle, for performing major agricultural operations like ploughing, seeding, harvesting. The modification includes fabricating a vehicle which is small, compact in size. The project is about a machine design which makes cultivation much simpler. The design of the chassis of the vehicle is made in such a way that it is suitable for the operations. The design for automatic seed sowing equipment is made. The plough is designed and modified the currently available plough tool in such a way that it with stand the load. The harvester (cutter) is designed and working by scotch yoke mechanism.

GSM Base Automated CPR Device Using Scotch-Yoke Mechanism

Cardiopulmonary resuscitation (CPR) is another lifesaving technique which will increase the chances of survival after getting cardiac arrest but when done manually it comes with Many problems like knowledge about CPR technique amongst the general population and inability of human to provide CPR as per WHO guideline and as long it needed. The main objective is to make automated CPR device which will provide strokes on chest through motor best scotch yoke mechanism and will give artificial ventilation through resuscitation bag true motor base side crank mechanism with the pulse sensor which will monitor the pulse and give signal to start and stop CPR device. GSM module which will send emergency message to the near hospital after confirming cardiac arrest.

Design and Fabrication of Automated Sieve Machine Using Scotch-Yoke Mechanism

As technology increases rapidly in a far better way, there is a need for automation in every field for better future. The growth in construction field in our country has seen extreme levels over the decade. So, to improve further, we need to reduce the manual work. A sand sieving machine has the function to sieve sand and stone that is mixed together. It gives sand with different grade at higher efficiency than manual work. Using machine mechanism driven by electricity power, we can reduce the time to sieve.

Fabrication of Automated Four-Way Hack Saw Machine by using Scotch Yoke Mechanism

Now days, increasing productivity is the main requirements in production engineering. This is possible by either reducing the operation time or by improving the efficiency of the machine. In the mass production, work pieces are machined simultaneously without any ideal time. This machine operates four hack saws simultaneously at the identical time. In this project the human effort is reduced by automating the hack saw machine, which performs less and easier operations of cutting the wood, metals and plastic materials. In This current research, a scotch yoke (Slotted link) mechanism is used to convert rotary motion of the pulley into the reciprocating motion of the hack saw frame to get the desired cutting action. Additionally, by keeping the Rheostat to the motor, the speed of hack saw frame is controlled according to the type of the work piece, and also the hack saw frame can be attached or removed when the work center is in ideal. Hence, by the four way hacksaw machine, the production rate can be increased and cost of labor also minimized.

Locomotive Capabilities of a Free-Swimming Robotic Tuna

As we try and understand more about the oceans and the creatures that inhabit them, the need for effective modes of aquatic transportation becomes abundantly clear. Taking a step back from traditional propeller-based systems, we look toward nature and the millions of years of natural selection to find inspiration. The successful designs that have prospered vary greatly from creature to creature depending on their lifestyle. From rays to jellyfish, the propulsion methods used are tailored for a specific purpose. Considering the vastness of the oceans and our desire to explore them, a quick and efficient mode of locomotion would be well suited for this task. A great example of this type of swimmer can be found within the genus Thunnus. Tuna rely on a lift-based propulsion system classified as thunniform swimming. The majority of thrust from this propulsion method is derived from the caudal fin and part of the tail. As the tail sweeps through the water, interesting vortex structures are shed from the trailing edge of the lunate fin. Along with velocity components that travel parallel to the movement of the fish, two separate vortices are shed from the top and bottom inner surfaces of the caudal fin and meet at the lengthwise center axis of the fish. These can be best visualized from the flow velocity components analyzed within a plane just behind the caudal fin and perpendicular to the body length axis. Over time, a reverse Karman vortex street is formed from the combination of vortices from multiple tail beats. A robotic tuna and CFD model were created with the minimum number of joints to approximate thunniform swimming. A modified scotch yoke mechanism was used to convert uniform rotation of a brushless DC motor to oscillatory motion that mimics the tail of a tuna. A servo is mounted on the tail to provide an adjustable angle of attack for the caudal fin. The dynamic CFD model of the tuna employs overset meshing techniques created in ICEM CFD 18.2 and is simulated within ANSYS Fluent 18.2. The model is actuated at the start of the tail and the base of the fin to represent thunniform swimming. The body of the tuna is held static as steady flow is passed around the model. The flow velocity was chosen as an approximation of the speed of a tuna of comparable size and tail-beat frequency.