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Full Version: FABRICATION OF VERTICAL LIFTING MECHANISM
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ABSTRACT

This mechanical projects presentation is a model and a simplified version of kattwyk bridge.
The bridge mechanism has been divided into three sections.
The central section lifts above,while the two slide parts remain intact with the supporting angles.
The lift mechanism is used for the bridge is based on the pulley system involving three pulleys.
The string is passed through the two pulleys on either side of middle section to lift the bridge.


INTRODUCTION

The motivation behind the project is the KATTWYK BRIDGE, HAMSBERG,  GERMANY. 
The bridge was built in 1972. The bridge has a unique feature  that it based on the “Vertical Lift Mechanism”.
Its  middle (movable) part lifts  to give way to the ship passing by thus maintaining waterways transport.
Till  now no bridge such has been built in India. 



DESCRIPTION

This project is a model and a simplified version of Kattwyk Bridge and has  been made under the constraints of space, time and resources available in the  lab.  The Bridge mechanism has been divided in three sections.
The central section  lifts above, while the two side parts remain intact with the supporting angles. The  lift  mechanism  used  for  the  bridge  is  based  on  the  pulley  system  involving three pulley
A string is passed through the two pulleys on either  side of middle section and the pulley at the centre synchronizes the motion of  two pulleys and makes the motion centralized. 
The angles are used to restrict the motion of central section allowing only the  motion in vertical direction to occur and provide the stability to the bridge  structure. 
A chain is also used to stop the central section at any desired height  depending on the height of ship assuming a real case situation thus saving the  power. 


OBJECTIVES


The vertical lifting mechanism is used to lift the bridges.
The mechanism is used to save the time.
In this mechanism the central part can be stopped at any desired position.




WORKING

The mechanism works by using an electric motor.
Power is transmitted to central by using ropes.
The ropes lift the central part upwards.
By using self locking gears we can stop central part at any desired position.



ADVANTAGES

Time saving.
Low cost.
Less power required.
To lift central part at any desired height by increasing the beams

CONCLUSION

This project work has provided us an excellent opportunity and experience, to use our limited knowledge we gained lot of practical knowledge regarding, planning, purchasing, assembling and machining while doing this project work.

The Vertical Lifting Mechanism is working with satisfactory conditions.

We have done tolerable and skill making use of available facilities.