This design is a mixture of design 1 and 2 . It is interesting as it is something totally different to what is out in the market. It consists of a boom with supersonic legs and has the load sliding down the boom . The reason why we called it the british bulldog is because the front 2 legs are higher than the back two and the overall design looks like the shape of a dog. This also has marketability.
Advantages
As the struts or legs give more balance to the boom there may not be such a need for a counterweight.
The crane has a sliding system which is quite simple as there is no need for bearings.
The legs can be adjusted causing the boom to change in angle which can reach loads which are higher up with greater ease .
It can be de-constructed within seconds. The legs can be detached and the boom can retract into 2 causing very little space to be used up within the 4 x 4 rover .
bending moment and stress calculations would not be too complex .
Disadvantages
As the load is sliding down the boom, it may hit the ground before the intended point. It is important that the load is kept close to the crane or enough clearence is givin at the bottom.
There is no rotation which can lead to a bit of restriction.
No comments:
Post a Comment