is conceived, designed, planned and constructed a model of a DRAWBRIDGE
with different materials available, that meets the following conditions: CONDITIONS
with different materials available, that meets the following conditions: CONDITIONS
- The rise and fall of the board will be smooth.
- His drive is to 4.5 V power and control:
B) In a second phase is automatic control using a relay and limit switches.
- contain at least two motion-processing systems.
- should be aesthetic and harmonious ways.
- adjustment parts and finish should be accurate.
- The maximum dimensions shall not exceed the set 300x200x150 mm
- status indicator lights will bridge deck.
- can be put to a red light when the bridge is going up and a green light when the bridge is down.
should choose materials and processes compatible with their economic usefulness. ADOPTED RESOLUTION
A drawbridge is a type of movable bridge that can be raised with the help of a mechanical installation in order to allow entry through a gate, or to allow maritime traffic through a body of water. The moving part is rotated through a horizontal axis or as a hinge. To raise the platform used ropes or chains attached at opposite corners to the shaft.
TYPES OF BRIDGES
overhead bridges : overhead bridges are those that revolve around a horizontal axis on a line of support, are included for both them drawbridges and overhead
Swing bridges, swing bridges In the vertical axis fit, as in the overhead two possibilities opening: two windows or turn on a pile symmetrical at the center of the navigation channel, although in rare cases can be located at an edge, or turn two semivanos with compensation on two batteries located at the edges of the channel.
Bridges Vertical Lift: vertical displacement bridges are simply supported panels, whose support can move vertically to rise to the height required for the navigation gauge Once created the problem and set these conditions
students proceed to search for information needed to deal with possible security solution.
students proceed to search for information needed to deal with possible security solution.
A drawbridge is a type of movable bridge that can be raised with the help of a mechanical installation in order to allow entry through a gate, or to allow maritime traffic through a body of water. The moving part is rotated through a horizontal axis or as a hinge. To raise the platform used ropes or chains attached at opposite corners to the shaft.
TYPES OF BRIDGES
overhead bridges : overhead bridges are those that revolve around a horizontal axis on a line of support, are included for both them drawbridges and overhead
Swing bridges, swing bridges In the vertical axis fit, as in the overhead two possibilities opening: two windows or turn on a pile symmetrical at the center of the navigation channel, although in rare cases can be located at an edge, or turn two semivanos with compensation on two batteries located at the edges of the channel.
Source: http://puentes.galeon. com / types / clasifica.ht manufacturing phase
In our case we are going from a bridge and built on previous courses and recover parts of the project and will replaced those badly built piece by piece new ones.
Our repair has been to remove those parts were glued with hot melt gun , because with the passage of time and above all the heat had off, then we changed all the axes of the project (they were built with 2mm wire were twisted), by shafts constructed M4 threaded rod and finally we have replaced the uprights.
transmission system designed to allow raising and lowering the board, shall consist of a belt drive and gear motor.
To raise the board we have set up a pulley and a cotton thread .
be automatic control using a relay and limit switches in our case two, one on top of the uprights and another in the bottom right where the board supports.
The electrical circuit is as follows:
We have made a PCB to use a socket where to insert the relay, because if not, you end up botching the having to make welds on their pin. The connections are as follows:
Video end of the project, already in operation .
In our case we are going from a bridge and built on previous courses and recover parts of the project and will replaced those badly built piece by piece new ones.
Our repair has been to remove those parts were glued with hot melt gun , because with the passage of time and above all the heat had off, then we changed all the axes of the project (they were built with 2mm wire were twisted), by shafts constructed M4 threaded rod and finally we have replaced the uprights. 
transmission system designed to allow raising and lowering the board, shall consist of a belt drive and gear motor. 
To raise the board we have set up a pulley and a cotton thread .
be automatic control using a relay and limit switches in our case two, one on top of the uprights and another in the bottom right where the board supports. 
The electrical circuit is as follows:
We have made a PCB to use a socket where to insert the relay, because if not, you end up botching the having to make welds on their pin. The connections are as follows:
Video end of the project, already in operation .
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