This type of drill is operated with one hand and the workpiece where the hole is to be drilled is held in a vise. These machines are used to drill such holes, the length of which exceeds three times the drill size. Examples of this class are rifle vessels, long spindles, connecting rods and certain drilling equipment for oil wells. They are vertical or horizontal, single spindle or multiple spindle and can vary whether the task or drill is turned. Modern rock drills are usually mounted on large platforms to drill many holes at once; The Mont Blanc tunnel between France and Italy was the first tunnel whose full diameter was drilled and operated at once.
The hole is drilled by turning a little and applying a downward force. The cuttings generated by the perforation surface by circulating a drilling fluid through the drilling cable, by browsing the drill and increasing the annular space between the hole and the drilling cable. The cuttings are separated from the drilling fluid on the surface.
When the power supply is provided, the spindle rotates together with the motor. The radial arm adapts with the type of operation and the height of the workpiece. The spindle is connected to the ratchet and the bit is placed between the jaws of the ratchet. The drill head adapts to the workpiece and provides sufficient current.
The term “simultaneous game” therefore generally refers to complex equipment used to penetrate the surface of the Earth’s crust. Rotary oil rigs can be classified as land platforms and marine platforms. The main features of ground equipment are portability and maximum working depth.
Heavy pieces of iron were attached to long bamboo cables suspended from the bamboo derricks and then lifted repeatedly and fell into a manually dug hole by jumping two or six men onto a lever. The Han Dynasty oil wells, manufactured by percussion drilling, were effective, but reached only 10 meters deep and 100 meters in the 10th century. In the 16th century, the Chinese explored and drilled oil wells over 2,000 feet deep. Cable drilling tools have been developed in ancient China and are used for drilling brine sources. The salt domes also contain natural gas, which produced some wells and was used for evaporation of the brine. Drake heard of the drilling of cable tools from Chinese workers in the US.
The drill of this type is designed to make holes in large and heavy workplaces. It supports a radial arm in the column that allows the table to move up and down to drill workpieces of different heights. It is also used as a rock drill component that construction companies can easily use. Well, all types of drills are classified as manual feed or power supply.
Terrestrial platforms are built in such a way that the derrick can be easily moved and reused to drill new holes. The different components of the platforms are mounted on skates, so that the underground protection platform can be moved in units and can be easily connected. The razor, or cantilever, is mounted on the ground with pins and then raised as a unit using the platform’s lifting equipment.