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The Hydraulic Wheel

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  1. The invention of television or a succession of discoveries
    1. The discoveries that introduced the invention of television
    2. The birth of the term "television"
    3. From the mechanical television (1925-1931) to the electric television (1932-1945)
  2. Television in the footsteps of players like the radio
    1. The FCC and Congress: state control
    2. The networks: diffusion
    3. U.S. companies: financing
  3. Television and the American public
    1. Television proved to the Americans
    2. The placing of television sets on the market
    3. Programs
  4. Conclusion

The first part of this paper studies the mechanism of the Hydraulic wheel.

The waterwheel is used in public work vehicles. Here, power is transmitted directly to the wheels of the vehicle and these vehicles have the advantage of having a 2, 4 or 8 wheel drive. With this system all the mechanical intermediaries of a conventional power train are removed and this reduces congestion.

Why do we need to use the Hydraulic wheel? What is its purpose?
The Hydraulic wheel functions on the ground and makes a machine mobile
The hydraulic motor which we are studying has a 7 radial piston. One of its main advantages is that it provides a high torque regardless of its speed.

By studying the mechanics of the hydraulic system, we can see how it helps to have a regular pair and how important the number of pistons used is.
We will be studying a single piston in the first step, and then we will add the effects of the action of the seven pistons.

We base this study on certain hypotheses. These are:
? We model the profile of the cam like a sine wave
? The force of fluid pressure F is F = PS Ur, where P is fluid pressure, S the surface of the cylinder and Ur, a unit direction vector of the cylinder
? It is assumed that when there is pressure, the action of the cam roller is divided into a tangential force and normal force. It is assumed that only the tangential force is responsible for the rotation system
? It is assumed that when the piston is not in the intake phase of the fluid under pressure, the wheel has no effect on the cam and friction is neglected.

Technological Study of the Wheel:
(a) Materials:

The waterwheel is essentially composed of metallic parts. The forces transmitted in the mechanism are very important. The torque of the motor is high and the equipment is very heavy. It is, therefore, necessary to have resistant parts, which is why metals (including steel) are best suited.
The machine operates outdoors, so it is subjected to temperature changes that vary depending on the season, corrosion and oxidation. It is, therefore, preferable to use the same alloy for the parts of the machine that are in direct contact so they can expand the same way and these alloys need to be treated against oxidation. It is preferable not to use stainless steel because it has poorer properties than others.

The non-metallic parts include several rings and lip seals that are made of polymers.

b) Manufacturing Process:
The production of the construction equipment is not as great that of other productions such as the production of cars. This allows the use of processes like sand molding.

c) Joints:
The waterwheel has different types of assemblies that are adapted to the conditions that are imposed on parts.

d) Guides
Some parts of the wheel are in dire need of a guiding device to see that it runs properly.

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