Blondin (quarry equipment)

A cable crane or crane rope consists of two poles or towers whose tips are connected to one or more supporting cables. There is a movable trolley with hoist, at the hoist rope, the load can be attached and raised or lowered on each support cable. With a traction cable, the trolley can be moved horizontally. Cable cranes are often used in places where large spans and heights have to be covered. There are spans of over 1000 meters at loads of 30 t possible. Order to enlarge the catchment area the masts be designed even moved and / or swivel. Unlike ropeway ropes ropes of cable cranes due to the weight of the loads, the driving frequency and the construction site dust higher loads.

Use

At the dam wall cable cranes are usually used to transport the concrete. Often there are several parallel systems are used, the mast opposite the engine house can often be moved on a rail in order to reach the entire construction site can.

In quarries rope cranes are used to carry away the obtained ingots. Alternatively, Derricks are used.

In shipyards, the masts of the cable crane system are often designed as fixed portals with multiple parallel on the slipway leading support cables.

In forestry, mobile rope cranes come to the wood back to the application. They are cost-effective in use as a helicopter and sometimes do not require the construction of costly forest roads.