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Bucket (machine Part)
A bucket (also called a scoop to qualify shallower designs of tools) is a specialized container attached to a machine, as compared to a bucket adapted for manual use by a human being. It is a bulk material handling component. The bucket has an inner volume as compared to other types of machine attachments like blades or shovels. The bucket could be attached to the lifting hook of a crane, at the end of the arm of an excavating machine, to the wires of a dragline excavator, to the arms of a power shovel or a tractor equipped with a backhoe loader or to a loader, or to a dredge. The name "bucket" may have been coined from buckets used in water wheels, or used in water turbines or in similar-looking devices. Purposes Buckets in mechanical engineering can have a distinct quality from the traditional bucket (pail) whose purpose is to contain things. Larger versions of this type of bucket equip bucket trucks to contain human beings, buckets in water-hauling systems in mines or, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bucket
A bucket is typically a watertight, vertical Cylinder (geometry), cylinder or Truncation (geometry), truncated Cone (geometry), cone or square, with an open top and a flat bottom that is attached to a semicircular carrying handle (grip), handle called the ''Bail handle, bail''. A bucket is usually an open-top container. In contrast, a Pail (container), pail can have a top or lid and is a shipping container. In non-technical usage, the two terms are often used interchangeably. Types and uses A number of bucket types exist, used for a variety of purposes. Though most of these are functional purposes, a number, including those constructed from precious metals, are used for ceremonial purposes. Common types of bucket and their adjoining purposes include: * Water buckets used to carry water * Household and garden buckets used for carrying liquids and granular products * Elaborate ceremonial or ritual buckets constructed of bronze, ivory or other materials, found in several ancient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pit Prop
A pit prop or mine prop (British and American usage, respectively) is a length of lumber used to prop up the roofs of tunnels in coal mines. Canada traditionally supplied pit props to the British market. As coal mining declined in importance and metal supports were used, the term became infrequently used. Though it was merely a log cut to a particular length, it was classified as a finished product and so got around the extra Canadian tariffs on the export of raw lumber. Because of the large quantities exported, it is probable many ended up in British pulp mills. Most pit props were made from the wood of spruce A spruce is a tree of the genus ''Picea'' ( ), a genus of about 40 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal ecosystem, boreal (taiga) regions of the Northern hemisphere. ''Picea'' ... trees. References Coal mining {{mining-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manchester
Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92 million, and the largest in Northern England. It borders the Cheshire Plain to the south, the Pennines to the north and east, and the neighbouring city of Salford to the west. The city borders the boroughs of Trafford, Metropolitan Borough of Stockport, Stockport, Tameside, Metropolitan Borough of Oldham, Oldham, Metropolitan Borough of Rochdale, Rochdale, Metropolitan Borough of Bury, Bury and City of Salford, Salford. The history of Manchester began with the civilian settlement associated with the Roman fort (''castra'') of Mamucium, ''Mamucium'' or ''Mancunium'', established on a sandstone bluff near the confluence of the rivers River Medlock, Medlock and River Irwell, Irwell. Throughout the Middle Ages, Manchester remained a ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bucket Elevator
A bucket elevator, also called a grain leg, is a mechanism for hauling flowable bulk materials (most often grain or fertilizer) vertically. It consists of: # Buckets to contain the material; # A belt to carry the buckets and transmit the pull; # Means to drive the belt; # Accessories for loading the buckets or picking up the material, for receiving the discharged material, for maintaining the belt tension and for enclosing and protecting the elevator. A bucket elevator can elevate a variety of bulk materials from light to heavy and from fine to large lumps. A centrifugal discharge elevator may be vertical or inclined. Vertical elevators depend entirely on centrifugal force to get the material into the discharge chute, and so must be run at a relatively high speed. Inclined elevators with buckets spaced apart or set close together may have the discharge chute set partly under the head pulley. Since they do not depend entirely on centrifugal force to put the material into the chu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savonius Wind Turbine
Savonius wind turbines are a type of vertical-axis wind turbine (VAWT), used for converting the force of the wind into torque on a rotating shaft. The turbine consists of a number of aerofoils, usually—but not always—vertically mounted on a rotating shaft or framework, either ground stationed or tethered in airborne systems. Origin The Savonius wind turbine was invented by the Finnish engineer Sigurd Johannes Savonius in 1922 and patented in 1926. Europeans had earlier experimented with curved blades on vertical wind turbines for many decades. The earliest mention is by the Bishop of Csanád County, Fausto Veranzio, who was also an engineer. He wrote in his 1616 book ''Machinae novae'' about several vertical axis wind turbines with curved or V-shaped blades. None of his or any other earlier examples reached the state of development achieved by Savonius. In his biography, there is mention of his intention to develop a turbine-type rotor similar to the Flettner rotor, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelton Wheel
The Pelton wheel or Pelton Turbine is an Impulse (physics), impulse-type water turbine invented by American inventor Lester Allan Pelton in the 1870s. The Pelton wheel extracts energy from the impulse of moving water, as opposed to water's dead weight like the traditional overshot water wheel. Many earlier variations of impulse turbines existed, but they were less Energy conversion efficiency, efficient than Pelton's design. Water leaving those wheels typically still had high speed, carrying away much of the dynamic energy brought to the wheels. Pelton's paddle geometry was designed so that when the rim ran at half the speed of the water jet, the water left the wheel with very little speed; thus his design extracted almost all of the water's impulse energywhich made for a very efficient turbine. History file:Pelton wheel (patent).png, Figure from Lester Allan Pelton's original October 1880 patent Lester Allan Pelton was born in Vermillion, Ohio in 1829. In 1850, he traveled ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bucket-wheel Excavator
A bucket-wheel excavator (BWE) is a large heavy equipment machine used in surface mining. Their primary function is that of a continuous digging machine in large-scale open-pit mining operations, removing thousands of tons of overburden a day. What sets them apart from other large-scale mining equipment, such as bucket chain excavators, is their use of a large wheel consisting of a continuous pattern of buckets which scoop material as the wheel turns. They are among the largest land or sea vehicles ever produced. The 14,200-ton Bagger 293 holds the Guinness World Record for the heaviest land-based vehicle ever built. History Bucket-wheel excavators have been used in mining for the past century, with some of the first being manufactured in the 1920s. They are used in conjunction with many other pieces of mining machinery (conveyor belts, spreaders, crushing stations, heap-leach systems, etc.) to move and mine massive amounts of overburden (waste). While the overall concepts t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Loading Shell Grabs, Cardiff
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is a type of fossil fuel, formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian (geology), Pennsylvanian) and Permian times. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its Electricity generation, electricity. Some iron and steel-maki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screening Bucket
Screening may refer to: * Screening cultures, a type a medical test that is done to find an infection * Screening (economics), a strategy of combating adverse selection (includes sorting resumes to select employees) * Screening (environmental), a set of analytical techniques used to monitor levels of potentially hazardous organic compounds in the environment * Screening (medicine), a strategy used in a population to identify an unrecognised disease in individuals without signs or symptoms * Screening (printing), a process that represents lighter shades as tiny dots, rather than solid areas, of ink by passing ink through * Screening (process stage), process stage when cleaning paper pulp * Screening (tactical), one military unit providing cover for another in terms of both physical presence and firepower * Baggage screening, a security measure * Call screening, the process of evaluating the characteristics of a telephone call before deciding how or whether to answer it * Electri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bucket Crusher
A bucket crusher or crusher bucket is a type of jaw crusher. It's an attached tool for excavators for built-in crushing construction waste and demolition materials. It has the design of a shovel, which is open at the rear for releasing the shredded material. Compared to normal jaw crushers, The jaw crusher bucket has a lower production, but can be transported more easily and only needs an excavator to operate. The jaws are driven by hydraulically actuated eccentrics which crush material to a desired particle size. Bucket crushers are primarily employed in mining and demolition for the breaking-down of crude minerals, concrete and masonry. During the crushing process, the crusher bucket is positioned vertically so that the crushed material can be released. The jaw bucket works with the hydraulic system of the excavator. The hoses to the excavator, for intake and drain the oil are connected directly to the crusher bucket. A hydraulic valve block regulates the oil flow and the oi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Man Lift
A belt manlift or manlift is a device for moving passengers between floors of a building. It is a simple belt with steps or platforms and handholds rather than an elevator with cars. Its design is similar to that of a paternoster lift. The belt is a loop that moves in a single direction, so one can go up or down by using the opposite sides of the loop. The belt moves continuously, so one can simply get on when a step passes and step off when passing any desired floor without having to call and wait for a car to arrive. Although not technically a paternoster, it has many of the same design features and hazards associated with its use. There are several companies still making belt manlifts. They are used in grain elevators and parking garages where space is limited. In Canada, manlifts were retrofitted in the early 1990s with safety features after fatal accidents. Safety concerns have led to a decline in their use. See also *Man engine A man engine is a mechanism of recipro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Work Platform
An aerial work platform (AWP), also an aerial device, aerial lift, boom lift, bucket truck, cherry picker, elevating work platform (EWP), mobile elevating work platform (MEWP), or scissor lift, is a mechanical device used to provide temporary access for people or equipment to inaccessible areas, usually at height. There are various distinct types of mechanized access platforms. They are generally used for temporary, flexible access purposes such as maintenance and construction work or by firefighters for emergency access, which distinguishes them from permanent access equipment such as elevators. They are designed to lift limited weights — usually less than a ton, although some have a higher safe working load (SWL) — distinguishing them from most types of cranes. They are usually capable of being set up and operated by a single person. Regardless of the task they are used for, aerial work platforms may provide additional features beyond transport and access, inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
