Question

In twoer crane , Explain the possiibility on the identified mechanism

Answer 1

Answer:-

              Tower cranes are a common fixture at any major construction site . They are pretty hard to miss, they often rise hundreds of feet into the air , and can reach out just as far. The construction crew uses the tower crane to lift steel,concrete,large tools-like acetylene torches and generators,and a wide variety of other building materials.

              Some mechanism involves--

                     1. The base is bolted to a large concrete pad that supports the crane .

                     2. The base connects to the MAST(or Tower) which gives the tower crane its height.

                     3. Attached to the top of the mast is the stewing unit(large ring-gear and motor) that allows the crane to rotate.

                     4. Attached to the stewing unit JIB(or Boom) , the machinery arm, the counterweights.

                     5. and the Operators Cab.

               The long horizontal JIB (or Working arm) which is the portion of the crane that carries the load. A trolley runs along the jib to move the load in and out from the cranes center.

               The shorter horizontal machinery arm, which contains the cranes motors and electronics as well as the large concrete counterweights.

               The machinery arm contains the winch motor that lifts the load along with the control electronics that drive it and the cable drum.

                A Cat head assembly in the stewing unit can measure the amount of collapse in the jib and sence when an overload condition occurs.

[ Your question is not so cleared , i have given an answer as far my understanding]