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Dragline
A dragline excavator is a heavy-duty excavator used in civil engineering and surface mining. It was invented in 1904, and presented an immediate challenge to the steam shovel and its diesel and electric powered descendant, the power shovel. Much more efficient than even the largest of the latter, it enjoyed a heyday in extreme size for most of the 20th century, first becoming challenged by more efficient rotary excavators in the 1950s, then superseded by them on the upper end from the 1970s on. The largest ever walking dragline was Big Muskie, a Bucyrus-Erie 4250-W put online in 1969 that swung a , 325 ton capacity bucket, had a boom, and weighed 13,500 tons. The largest walking dragline produced as of 2014 was Joy Global’s digital AC drive control P&H 9020XPC, which has a bucket capacity of and boom lengths ranging from ; working weights vary between 7,539 and 8,002 tons. Types Draglines fall into two broad categories: those that are based on standard, lifting cran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bucyrus-Erie
Bucyrus-Erie was an American surface and underground mining equipment company. It was founded as Bucyrus Foundry and Manufacturing Company in Bucyrus, Ohio, in 1880. Bucyrus moved its headquarters to South Milwaukee, Wisconsin, in 1893. In 1927, Bucyrus merged with the Erie Steam Shovel Company to form Bucyrus-Erie. In 1997, it was renamed Bucyrus International, Inc. In 2010 the enterprise was purchased by Caterpillar in a US$7.6 billion ($8.6 billion including net debt) transaction that closed on July 8, 2011. At the time of its acquisition, the Bucyrus product line included a range of material removal and material handling products used in both surface and underground mining. History 1880-1927 Bucyrus was an early producer of steam shovels in its Bucyrus, Ohio headquarters and manufacturing facility. In 1893, Bucyrus moved its operations to South Milwaukee, Wisconsin. In 1904 Bucyrus supplied 77 of the 102 steam shovels used to dig the Panama Canal. These were 95 ton model ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
P&H Mining Equipment
P&H Mining Equipment sells drilling and material handling machinery under the "P&H" trademark. The firm is an operating subsidiary of Joy Global Inc. In 2017 Joy Global Inc. was acquired by Komatsu Limited of Tokyo, Japan, and is now known as Komatsu Mining Corporation and operates as a subsidiary of Komatsu. Parent Company Overview Joy Global Inc. (JGI) is a mining machinery and service support company based in Milwaukee, Wisconsin, USA. It consists of two operating units – P&H Mining Equipment and Joy Mining Machinery. P&H Mining Equipment specializes in the design, manufacture and support of equipment applied to surface mines. Joy Mining Machinery specializes in equipment and support applied to underground mine operations. P&H Mining Equipment History and Henry Harnischfeger started the manufacturing business that would evolve into P&H Mining Equipment in 1884 in Milwaukee, Wisconsin, USA. Pawling was a castings pattern maker. Harnischfeger was a locksmith machinis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
P&H Mining
P&H Mining Equipment sells drilling and material handling machinery under the "P&H" trademark. The firm is an operating subsidiary of Joy Global Inc. In 2017 Joy Global Inc. was acquired by Komatsu Limited of Tokyo, Japan, and is now known as Komatsu Mining Corporation and operates as a subsidiary of Komatsu. Parent Company Overview Joy Global Inc. (JGI) is a mining machinery and service support company based in Milwaukee, Wisconsin, USA. It consists of two operating units – P&H Mining Equipment and Joy Mining Machinery. P&H Mining Equipment specializes in the design, manufacture and support of equipment applied to surface mines. Joy Mining Machinery specializes in equipment and support applied to underground mine operations. P&H Mining Equipment History and Henry Harnischfeger started the manufacturing business that would evolve into P&H Mining Equipment in 1884 in Milwaukee, Wisconsin, USA. Pawling was a castings pattern maker. Harnischfeger was a locksmith machinis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joy Global
Joy Global Inc. was a company that manufactured and serviced heavy equipment used in the extraction and haulage of coal and minerals in both underground and surface mining. The company had manufacturing facilities in Alabama, Pennsylvania, Texas, Wisconsin, Australia, Canada, China, France, South Africa, Poland and the United Kingdom. In 2017, Joy Global was acquired by Komatsu Limited and was renamed Komatsu Mining Corp. In 2016, sales of services accounted for 78% of revenues, while sales of equipment accounted for 22% of revenues. History The company had its beginnings in Milwaukee, Wisconsin. At the time, Milwaukee was a center of industrial machinery manufacturing at the convergence of three rivers entering Lake Michigan. Among the growing number of machinery manufacturing firms in Milwaukee in the 1870s was a struggling firm known as the Whitehill Sewing Machine Company. Alonzo Pawling and Henry Harnischfeger managed castings patternmaking and gear machining operation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harnischfeger Corporation
Joy Global Inc. was a company that manufactured and Tertiary sector of the economy, serviced heavy equipment used in the extraction and haulage of coal and minerals in both underground and surface mining. The company had manufacturing facilities in Alabama, Pennsylvania, Texas, Wisconsin, Australia, Canada, China, France, South Africa, Poland and the United Kingdom. In 2017, Joy Global was acquired by Komatsu Limited and was renamed Komatsu Mining Corp. In 2016, sales of services accounted for 78% of revenues, while sales of equipment accounted for 22% of revenues. History The company had its beginnings in Milwaukee, Wisconsin. At the time, Milwaukee was a center of industrial machinery manufacturing at the convergence of three rivers entering Lake Michigan. Among the growing number of machinery manufacturing firms in Milwaukee in the 1870s was a struggling firm known as the Whitehill Sewing Machine Company. Alonzo Pawling and Henry Harnischfeger managed castings patternmaking ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Muskie
Big Muskie was a dragline excavator built by Bucyrus-Erie and owned by the Central Ohio Coal Company (formerly a division of American Electric Power), weighing and standing nearly 22 stories tall. It mined coal in the U.S. state of Ohio from 1969 to 1991. It was dismantled and sold for scrap in 1999. Design specifications and service The Big Muskie was a model 4250-W dragline and was the only one ever built by the Bucyrus-Erie company. With a bucket, it was the largest single-bucket digging machine ever created and one of the world's largest mobile earth-moving machines alongside the Illinois-based Marion 6360 stripping shovel called The Captain and the German bucket wheel excavators of the Bagger 288 and Bagger 293 family.For details see the table on thGerman Wiki The bucket alone could hold two Greyhound buses side by side. It took over 200,000 man hours to construct over a period of about two years and cost $25 million in 1969, the equivalent of $ today adjusted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Excavator
Excavators are heavy equipment (construction), heavy construction equipment primarily consisting of a backhoe, boom, dipper (or stick), Bucket (machine part), bucket, and cab on a rotating platform known as the "house". The modern excavator's house sits atop an undercarriage with Caterpillar track, tracks or wheels, being an evolution of the steam shovel (which itself evolved into the power shovel when steam was replaced by diesel and electric power). All excavation-related movement and functions of a hydraulic excavator are accomplished through the use of hydraulic fluid, with hydraulic cylinders and hydraulic motors, which replaced winches, chains, and steel ropes. Another principle change was the direction of the digging action, with modern excavators pulling their buckets toward them like a dragline rather than pushing them away to fill them the way the first powered shovels did. Terminology Excavators are also called diggers, scoopers, mechanical shovels, or 360-degree ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Link-Belt Construction Equipment
Link-Belt Cranes is an American industrial company that develops and manufactures heavy construction equipment, specializing in telescopic and lattice boom cranes. Link-Belt is headquartered in Lexington, Kentucky, and is a subsidiary of the Japanese conglomerate, Sumitomo Heavy Industries. History Invention of Linked-Belt chain drive In 1874, William Dana Ewart sold farm implements in Belle Plaine, Iowa. He invented a new harvester drive-chain which used a square detachable link—a "linked belt." "William Ewart recognized that harvesters with continuous chain belt drives made up of square links and flat links would wear unevenly and break in one spot. Once broken, the entire chain belt had to be taken back to the barn for needed repairs, thus delaying all harvesting." In 1875, Ewart and investors founded the Ewart Manufacturing Company to build and market the new detachable drive chain. This later changed to Ewart Detachable Link-Belt. Expansion into coal handling In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wire Rope
Steel wire rope (right hand lang lay) Wire rope is composed of as few as two solid, metal wires twisted into a helix that forms a composite ''rope'', in a pattern known as ''laid rope''. Larger diameter wire rope consists of multiple strands of such laid rope in a pattern known as ''cable laid''. Manufactured using an industrial machine known as a strander, the wires are fed through a series of barrels and spun into their final composite orientation. In stricter senses, the term ''wire rope'' refers to a diameter larger than , with smaller gauges designated cable or cords. Initially wrought iron wires were used, but today steel is the main material used for wire ropes. Historically, wire rope evolved from wrought iron chains, which had a record of mechanical failure. While flaws in chain links or solid steel bars can lead to catastrophic failure A catastrophic failure is a sudden and total failure from which recovery is impossible. Catastrophic failures often lead to cascadi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary 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 th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strip-mining
Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels. In North America, where the majority of surface coal mining occurs, this method began to be used in the mid-16th century and is practiced throughout the world in the mining of many different minerals. In North America, surface mining gained popularity throughout the 20th century, and surface mines now produce most of the coal mined in the United States. In most forms of surface mining, heavy equipment, such as earthmovers, first remove the overburden. Next, large machines, such as dragline excavators or bucket-wheel excavators, extract the mineral. Advantages of surface mining include lower cost and greater safety compared to underground minin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Shovel
A power shovel, also known as a motor shovel, stripping shovel, front shovel, mining shovel or rope shovel, is a bucket-equipped machine usually powered by steam, diesel fuel, gasoline or electricity and used for digging and loading earth or fragmented rock and for mineral extraction. Power shovels are a type of rope/cable excavator, where the digging arm is controlled and powered by winches and steel ropes, rather than hydraulics like in the modern hydraulic excavators. Basic parts of a power shovel include the track system, cabin, cables, rack, stick, boom foot-pin, saddle block, boom, boom point sheaves and bucket. The size of bucket varies from 0.73 to 53 cubic meters. Design Power shovels normally consist of a revolving deck with a power plant, drive and control mechanisms, usually a counterweight, and a front attachment, such as a crane ("boom") which supports a handle ("dipper" or "dipper stick") with a digger (" bucket") at the end. The term "dipper" is also sometimes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
