This is the leg design we will be going with for our crane. In designing, it was important to make sure that we kept in mind the fact that the crane will be used mostly on rough terrain. Therefore the support for the whole crane structure needed to be flexible but still maintain structural strength. The led to the chosen design as shown above.
Each of the legs can be moved independantly from each other and then kept at that position by means of a steel bolt put through the corresponding hole. If position needs to be changed this can be done easyliy by repeating process with corresponding hole position.
Having constracted the supporting legs a way of connecting base to legs had to be designed.
The above illustrations show the fixings that will be used to connect the base to the crane legs. This will be done by a standard bolt bolted through the lower base and the legs at eacg of the four intersections as shown. The Upper base will not have any direct connections with the legs as this will allow for the rotation of the plate through the ball bearings between the Upper and Lower bases.
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