PI_ REPORT 2-1

Long the time the human have to development differents mechanisms to make things that could be imposible if they want to make it by him self, one of this machines was the cranes who use a mechanism of polley and counterweights that permits raise a lot of weight, this Project is very important to us because actually the cranes needs a improvement, that isn´t passed in a lot of time, the charges that they receive are greater and greater weight that need more effectivity  so thats why we make a crane that can move more charges than the actually cranes.The cranes needs to be able to move more charges in less time, we are planning solution to  this problem with a mechanism that move two charges at the same time and not only that,this movements can be free, so this would give more efficacy and can be operates by two operators, that give us the double effectivity in the work.with this improvement that we are going to give it to the crane, we hope that reduce the risk to the personal and increase the security of the work.