Mechanical Projects Abstracts
This Mechanical projects presentation 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 pulleys. A string is passed through the two pulleys on either side of middle section and the pulley at the center 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. The mechanism used to lift the central section is due to the constraint of not using any electric motor or gears. In real case situation, the power can be given by electric motors and cables can be used. The four bridge supporting angles that connect the three sections of the bridge will actually go till the bottom surface of the river.
Motivation behind the Mechanical Projects
The motivation behind this Mechanical projects Presentation Topics is the KATTWYK BRIDGE, HAMSBERG, GERMANY. The bridge was built in 1972. The bridge has a unique feature that it based on the “Vertical Lif t 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.
Estimated Cost for the Mechanical Projects
- Labor charges: Unskilled: Rs.800 Skilled: Rs.40
- Overall cost of the Mechanical projects : Rs.1484
- Overhead cost: Rs 135
- Total cost of materials used: Rs. 433
- Electricity charges: Rs. 76 (for 1 Hr.)
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