Hydraulic Lift

 

Hydraulic Lift

1. INTRODUCTION

Hydraulic lifting machines are widely used for the lifting, moving and pushing function in mining, construction and steel industries and in material handling equipment. Since 1950s the applications of hydraulic systems have been started in the industries and this form of power has become standard for the operations of industrial equipment. Today, modern automation technology has a very important place for hydraulic systems. The reason for this is that hydraulic systems are simple, versatile and efficient for the transmission of power. The main job of a hydraulic system is the transmission the power as the power is changed from one form to another. As these hydraulic systems are popularly used in the manufacturing and production plants, therefore it is required that they are reliable and efficient equipment to achieve the desired results from them like transmission of large amount of forces with the use of smaller components which means good power intensity and precise positioning of the equipment with consistent power output. These systems operate smoothly with reversal function possibility and can work well in high temperature environment conditions. These systems are thus cost considerably to provide the above functions and therefore the same system is modified using a simple rack and pinion mechanism to lower its cost and allowing further research and modification in it to make it able to provide all the above functions with the same efficiency. 

 

2. LITERATURE REVIEW 

The traditional hydraulic system consists of various useful components which allows it to perform the lifting functions precisely. These components are costly and if any part is faulty then the replacement of that part costs much, therefore the need for a low cost, simple mechanism, hydraulic system is required. As you can see in the below figure traditionally there are components like reservoir which contains the hydraulic fluid which is incompressible. The size of the reservoir depends on the size of the system and the amount of hydraulic fluid required by it and thus the cost of it also increases with this. Another main component is the fluid pump which pumps the fluid from the reservoir to the cylinder, it should be of high power to pump the incompressible fluid in the system and a manual plunger is used to control the direction of this pumped fluid, this plunger directs the fluid to the upper section of the cylinder or the lower section according to the demand. A relief valve is also added before the manual plunger so that when the load on the hydraulic ram is high, then the excess pressure on the pump is reduced by the relief valve by passing the fluid to the reservoir. Some components can be replaced by a simple rack and pinion mechanism and thus reducing the overall cost of the hydraulic lift.

3. METHODOLOGY 

This project is based on Pascal Law and Fluid machinery concept with the involvement of Rack & Pinion. IDEA OF IMPLEMENTATION

Now we take four 50 ml plastic syringe as hydraulic cylinder. We take one more syringe and filled it with water/oil and now we connected both syringe with plastic tube as shown below.

If we pressurized one syringe second syringe lift up according to Pascal law, same phenomena work with another syringe too. Now we plan to construct this Pascal law concept as a final project. We use two syringes and coupled with one sliding mechanism and this mechanism is powered from a slow DC gear motor for Lifting good and vehicles

 

  

 

6. CONCLUSION: - 

After construction of this project, we reach to this conclusion that we can easily remove the reserve fluid tank, fluid motor and manual plunger valve from our heavy earth mover vehicle to reduce its cost. We can implement this concept in robotic arms, conveyor, load lifting ramps and heavy load turning table. We can improve this concept by adding on gear boxes in between the motor and rack pinion assembly. This technique can reduce the heavy cost cutting in hydraulic control machines.