HYDRAULIC LIFT

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ABSTRACT:

In this project we are using hydraulic cylinder for placing object from one place to other. Hydraulic machinery is machines and tools which use fluid power to do work. Heavy equipment is a common example.

In this type of machine, high-pressure liquid — called hydraulic fluid — is transmitted throughout the machine to various hydraulic motors and hydraulic cylinders. The fluid is controlled directly or automatically by control valves and distributed through hoses and tubes.

The popularity of hydraulic machinery is due to the very large amount of power that can be transferred through small tubes and flexible hoses, and the high power density and wide array of actuators that can make use of this power.

Hydraulic machinery is operated by the use of hydraulics, where a liquid is the powering medium. Pneumatics, on the other side, is based on the use of a gas as the medium for power transmission, generation and control.

Force and torque multiplication:

A fundamental feature of hydraulic systems is the ability to apply force or torque multiplication in an easy way without the need of mechanical gears or levers, either by altering the effective areas in two connected cylinders or the effective displacement between a pump and motor.

Examples

(1) Two hydraulic cylinders interconnected:

Cylinder C1 is one inch in radius, and cylinder C2 is ten inches in radius. If the force exerted on C1 is 10 lbf, the force exerted by C2 is 1000 lbf because C2 is a hundred times larger in area (S = πr²) as C1. The downside to this is that you have to move C1 a hundred inches to move C2 one inch. The most common use for this is the classical hydraulic jack where a pumping cylinder with a small diameter is connected to the lifting cylinder with a large diameter.

(2) Pump and motor:

If a hydraulic rotary pump with the displacement 10 cc/rev is connected to a hydraulic rotary motor with 100 cc/rev, the shaft torque required to drive the pump is 10 times less than the torque available at the motor shaft, but the shaft speed (rev/min) for the motor is 10 times less than the pump shaft speed. This combination is actually the same type of force multiplication as the cylinder example (1) just that the linear force in this case is a rotary force, defined as torque.

Both these examples are usually referred to as a hydraulic transmission or hydro static transmission involving a certain hydraulic “gear ratio”.

WORKING DESCRIPTION:

In our project we are using a system which will work in both vertical and horizontal ways. Approx 3 by 2 feet of structure design is used here; its basic application will be in industries which will go to be atomized by micro controller systems soon.

These lifts will be used to lift and place heavy objects from one place to another, and controlled by remote.

  1. HDRAULIC PUMP PRESSURE POWER—MAXIMUM 2 Tons
  2. MOVING MECHANISM—TWO SIDE MOTOR CONNECTION WITH WHEELS

SPECIFICATION OF COMPONENTS USED:

  1. HYDRAULIC PUMP
  2. LIFT MECAHNISM
  3. CAPACITOR
  4. CONTROL SWITCHES
  5. TRANSFORMER
  6. DIODE
  7. 12 V DC GEARED MOTORS 45 Rpm
  8. 12 V DC GEARED MOTORS 10 Rpm
  9. WOODEN BOXES
  10. ASSEMBLY
  11. NUT & SCREW

ADVANTAGES:

  • It is very much useful in all small scale industries.
  • Loading the material from ground level to small vehicle
  • Move weight material to another place
  • Loading and unloading purpose

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