What happens in the winding house house of a mine?
This part of the system is used to wind or unwind the steel cable. The hoist is attached to a motor and a control system. The mine cage and the skips are lowered into the mine when a steel cable unwinds from the winch. The mine cage and skips are raised when the steel cable winds up again.
What Is a Winding House?
Winding house definitions Building where a winding-engine was housed to operate a winding mechanism and the winding drum around which the cable or rope was wound.
What does a headgear of a mine do?
Mine headgear constructions support wheel mechanisms for suspending winding cables that transport workers and ore up and down deep level shafts. These strange anthropomorphic structures have become the iconic symbol for mining.
What are two parts of lift that go down a mine called?
The two parts of lift that go down a mine are called Hoist cable and Sheave wheel. The main significance of hoist cables in the lifts: With the help of a weight-carrying pulley system, it lifts heavy-weight in the lift or elevator. A sheave wheel is also called a pulley wheel.
What do head frames answer?
Part 3: The head frame is the structure that supports the sheave wheel. It must be strong enough to keep the sheave wheel in place when it lifts the heavy mine cage. The left “legs” of the head frame slope towards the hoist. This is due to the tension in the cable pulling the whole frame in that direction.
How fast must the cage and skip travel?
This distance is as little as 40 cm, and the conveyances travel at a speed of 55 km/h. The skip, cage and the 33-tonne counterweight are of ABB´s well proven design. The skip, with a payload capacity of 21.5 tonnes, is designed to ensure fast, automatic loading and dumping.
How deep are mine shafts?
List of deepest mines Rank Name of mine Depth 1 Mponeng Gold Mine 4.0 km (2.5 mi) 2 TauTona Mine 3.9 km (2.4 mi) 3 Savuka Gold Mine 3.7 km (2.3 mi) 4 East Rand Mine 3.585 km (2.228 mi).
What is the top of a mine shaft called?
The most visible feature of a traditionally-built mine shaft is the headframe (or winding tower, poppet head or pit head) which stands above the shaft.
What are 4 types of mining?
There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits.
What do you think a counterweight does for a mine winding system?
A counterweight is a weight that, by applying an opposite force, provides balance and stability of a mechanical system. The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and is less taxing on the lifting machine.
What does a hoist cable do?
A hoist cable can also be located on an overhead electric crane that operates on a section of I-beam. In both cases, the hoist cable provides the lifting and also is responsible for the lift rating of the hoist. When braided together, fine steel strands or wires become extremely strong and durable.
What do these parts of lift do?
Part 2: The sheave wheel is a pulley wheel that sits above the mine shaft. The hoist cable passes over the sheave wheel and then down the shaft of the mine. The sheave wheel reduces the sliding friction of the mine cable. Part 3: The head frame is the structure that supports the sheave wheel.
What is a headframe in mining?
A headframe (also known as a gallows frame, winding tower, hoist frame, pit frame, shafthead frame, headgear, headstock or poppethead) is the structural frame above an underground mine shaft so as to enable the hoisting of machinery, personnel, or materials.
What is a steel headgear?
A steel headgear consisting of two heavy plate A-frames, set astride the shaft mouth. They are braced together and carry the heavy girders that support the winding sheaves platform.
What does the headgear of a mine do Grade 8?
How it works mine headgear works. A cable winds around “sheave” wheels on the “headgear” at the top. These cables are attached to a lift that transports miners, machines and ore into and out of the mine.
What does a winch of a headgear do?
There are four main parts to a mine’s headgear: Part 1: The winch or hoist is in a winding house. This part of the system is used to wind or unwind the steel cable. The hoist is attached to a motor and a control system.
What are the differences between the two mine winches?
So what are the differences between the two? The biggest difference is that a hoist is designed to both lift and lower a load, whereas a winch is designed to pull a load – and depending on design, hold it in place.
What are the difference between the two mine winches shown in Figure 2?
One has counter weight, while the other does not. The last one has a winch drum, while the other does not.
How many chests are there in a mineshaft?
They appear as a small room with a monster spawner in the center and 1 or 2 chests (sometimes a double chest) filled with valuable items. The walls and floor of the dungeon are made of cobblestone and mossy cobblestone.
How do you sink a mineshaft?
Conventional mine shaft sinking methods involve the performance of a cycle of different operations—drilling and blasting, removal of smoke and cleaning of fly-rock lodged on overhead timbers, mucking and hoisting of the broken rock, and timbering.
What is a mining cut?
A miners cut is a type of diamond cut common in antique jewelry dating back to the 1830s. Many Georgian, Victorian and Edwardian style engagement rings feature this type of cut because it was a popular 19th century jewelry design.