This mechanical engineering project is about designing a hydraulic fork lift. There is nothing new about this project. I am sure that similar projects are done in many colleges. Even ready-made material may be available about the whole project. Anyway I don’t have it so let me share what I think is worthy of this project.
Fabrication of the whole forklift including the cab and engine will be expensive. It won’t much add to your academics either as what you plan to build is already in the market with a lot of advanced features. So better take this as a design project with calculations of the power, capacity, mobility etc. You can also fabricate a forklift with carriage (the portion that houses lifting fork, hydraulic cylinder and piston)
As far as I know you should consider the following:
- The maximum weight that can be lifted
- The maximum height to which the weight can be lifted.
- The powered required
- The standard size of the hydraulic cylinder available in the market and the number of units required.
- Total length of the hydraulic lift including the cab and engine and calculate the counter weight (the weight to be added to the rear of the vehicle so that it won’t tilt while lifting heavy objects.)
The power required for a hydraulic lift is taken from its engine. Since your project does not have an engine you can use an electric motor as the power source.
The cost of the project depends on the specifications of the forklift.
- hydraulic fork lift
The energy sources for man are drying up. The era of fossil fuels is going to end very soon. Scientists are now working on to find new renewable sources of energy. Along with renewable energy sources like light and wind comes gravity.
Gravity is a phenomenon that existed from the very beginning of the universe but only discovered by Sir Isaac Newton not more than 400 years ago. Recently scientists started generating energy from gravity.
The basic concept of a gravity power generating mechanism is simple. When a body goes down from a higher altitude to a lower one its potential energy is converted into kinetic energy via linear motion. This motion is converted circular motion and is then converted to electricity using a dynamo.
One challenge in this mechanism is about getting continuous supply of energy. A body cannot go downward infinitely, but for continuous power generation this practically impossible scenario is necessary.
An interesting solution for this problem was invented by Mr. Rajesh Mulchandani and he has applied for patent. He uses gravity and buoyancy of water to generate a continuous up and down motion. The mechanism consists of a water filled tank with 50-60meters high with 2 balanced masses capable of moving using both buoyancy and gravity.
You can see the full mechanism here http://powerfromgravity.com/invention.aspx.
gravity power generation mechanism
As a final year mechanical engineering project this may be too expensive. But there may be more simple ideas to generate motion continuously. Another example of such a mechanism can be found here. http://www.freepatentsonline.com/20090115195.pdf
Wish you all the best.
The system includes a power source, such as a power generation device or an external powersource. The power co-generation system includes first and second electrical capacitance portions that are electrically coupled to the power source and that are configured to carry positive and negative charges, respectively. The power co-generation system further includes a biasing device that is configured to separate the first and second capacitance portions with respect to one another. Thus, by varying the distance between the capacitance portions in response to a vehicle on the rail, the capacitance portions cooperate to act as a variable capacitor that facilitates the co-generation of power with respect to the system. That is to say, the mechanical energy of the biasing device is converted into electrical energy for the system.
In accordance with another exemplary aspect of the present technique, a method of co-generating power via a vehicle traveling on a rail is provided. The method includes the act of driving first and second capacitor plates with respect to oneanother in response to the vehicle that is traveling on the rail. The method also includes the act of charging the first and second capacitor plates via a power source, such as a power generation device or an external power source. The method further includes biasing the first and second plates apart from one another, thereby displacing the plates with respect to one another. This displacement changes the electrical capacitance between the first and second plates and, resultantly, increases the electric potential between the first and second plates. In turn, this displacement of the first and second plates facilitates the co-generation of electrical energy from the kinetic and potential energy of the vehicle on the rail.
How to Make a Hovercraft Working Model
The idea of making a Hovercraft dates back to 1716 when Emmanual Swedenborg recorded a design, but it was short lived. In 1870, Sir John Thornycroft filled patents involving air lubricated hulls. And it was in 1959 a hovercraft was built, by Christopher Sydney Cockerell by discovering the Momentum Curtain theory. Hover craft also called Air cushion vehicle (ACV) travels on any kind of flat surface. It is supported by a cushion of pressurized air.
- Can be powered by one or more engines
- Small crafts have a single engine with the drive split through a gear box
- Usually one engine drives the fan responsible for lifting the vehicle
- The other forces air from
Two main principles:
- A skirt is required to quarantine airflow
- No contact with ground hence friction is eliminated
- The shape of the body affects stability
- All parts are essential for proper working
1) Lifting fan: Usually a centrifugal fan is preferred. When rotated air is sucked into the center hole, it is coupled via a gearbox and connected to the engine
2) Thrust propellers: An aircraft type propeller with variable type pitch blades. Diameter ranges from nine feet to nineteen feet. In bigger crafts the propellers are rotated while in smaller ones, rudders are used.
3) Skirt: Flexible strip which is fitted below the bottom edges of the plenum chamber. Skirt design is the most sensitive design parameter as it protects the craft and helps to lift it even higher.
In theory hovercrafts are simple machines but a plethora of problems exist to make a functioning hovercraft. The plans as well as the design must be flawless. To build a hovercraft one must be well aware of the demands of construction. Only then can one design a hovercraft.
This is a full report on how to make a hovercraft which I found in the net. http://www.vintageprojects.com/go-kart/flying-hovercraft.pdf