For handling heavier weights, and for lifting weights to bigger heights, tower cranes are necessary and for those companies, which do not have their own tower cranes, tower crane hire is available. Factories and construction sites have to handle a stream of heavy objects day in and day out.
These heavy materials might have to be moved from one place to another, loaded into waiting trailers, unloaded from the larger vehicles that have brought them in, or fitted correctly into an existing structure. At times, such operations are to be performed at substantial heights.
You can also opt for the mobile crane hire in Sydney & crane truck hire.
All these are managed by a lifting tackle or a tower crane. In fact, a tackle functions as a unit of a large tower crane itself, for a tower crane lifts and places heavy objects at the required points with the help of such gear.
Independent lifting tackles that are mounted on different types of frames are used for handling lesser weights. A tackle may be mounted on an A-frame, an H frame, a portal frame, or a tripod. In an A-frame, the two arms of the frame converge at the top as in the alphabet A and a pulley block sheave is fixed at the point of convergence.