Dragline excavation is a piece of heavy equipment used in the field of civil engineering և surface operation.
The dragline is divided into two broad categories. Based on the standard, crane units are the heaviest units to be built on site. Most landslide cranes, with an additional winch in front, can act as a drawbar. These units (like other cranes) are designed to fall on trailers with flat trailers tra to carry on the road. Cobblestones used in urban planning are almost always small types of cranes. They are used as road, port construction, pond al canal drainage as pile machinery. These types are manufactured by crane manufacturers, such as connecting belts. Historian.
Very large types built on site, typically used in mining to remove high loads on coal and, more recently, to extract oil sands. The biggest mobile land vehicles are by far the biggest obstacles. The smallest small is the most common type weighing around 8000 tons, and the largest produced - 13000 tons.
The dragline bucket system consists of a large bucket suspended from a boom (a large farm-like structure) with wires. The bucket is maneuvered through several ropes and chains. Spool ropes, powered by large diesel or electric motors, support the assembly of bucket cou crane couplings. Dragrop is used to pull the bucket set horizontally. The bucket is designed for a variety of tasks, including Lehra's skilled of tug-of-war. Below is a diagram of a large bucket system.
The large weight system used in the open pit mining industry costs approximately $ 100-100 million. A typical bucket has a capacity of 40 to 80 cubic yards (30 to 60 cubic meters), although oversized buckets are up to 168 cubic meters (5,900 cubic feet). [10] Boom lengths range from 45 to 100 meters (148 to 328 feet). It can carry up to 450 tons of material per cycle.
Most of the mining industry does not run on diesel fuel like other mining equipment. Their power consumption is so high [volume] in terms of several megawatts that they are directly connected to high-voltage networks at 6.6 և 22 kV. Weighing in at a typical weight of 4,000 to 6,000 tonnes [further explanation], a 55-cubic-meter bucket can use up to 6 MW during routine excavations. Because of this, many (possibly apocryphal) stories [need examples] have been told about the aftermath of the mining industry. For example, there is a long history [according to whom] in the 1970s that if all seven lines at Peak Downs Mine (BHP, a very large coal mine in central Queensland, Australia) were changed at the same time, they would all be outside of Northern Queensland.
