A coal mining car at Lackawanna Coal Mine in Scranton, Pennsylvania Coal miners exiting a winder cage at a mine near Richlands, ia in 1974 Surface coal mining in Wyoming, A coal mine in Frameries, Belgium. Coal mining is the process of extracting coal from the ground or from a mine. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity.
Space adaptability between mining equipment and coalrock mass, to ensure the machines cut in a coal seam, is an importance technique in longwall mining automation. In order to guide the mining equipment cutting in the coal seam, a cutting path planning method based on multiple hierarchical clustering was proposed. Morphology similarity and the coplanarity measurement method were defined to ...
Abstract. In this paper, the results of a comprehensive study on failures of coal shearer picks in Parvadeh coal mine in has been carried out and the main mechanisms and causes for pick ...
The specific construction process of the directional hydraulic coal mining equipment is as follows: first, by using the ZDY10000LS drilling rig and BLY290/11 pump truck for drilling, the coal seam conditions, soft layer thickness, and layer position are determined; second, based on geological conditions and gas occurrence conditions, we design ...
2. Longwall shearers The coal is cut from the coal face by a machine called the shearer (power loader). This machine can weigh 75120 tonnes typically and comprises a main body, housing the electrical functions, the tractive motive units to move the shearer along the coalface and pumping units (to power both hydraulic and water functions).
The first chain coal cutting machine was invented in Coatbridge in 1871 by John Alexander of the iron and coalmasters William Baird and Company. This kind of coal cutter works much like a chainsaw, with sharp metal teeth attached to a moving chain.
A Baltimore, Maryland based coal industry customer came to Clark Machine for the fabrication of a large chute assembly for transporting coal from railcars to ships. Clark Machine's variety in services as well as the crucial ability to work on physically large parts proved to be assets in this project. After receiving customer specifications ...
My invention relates to cutting machines and, in particular, to coal cutting machines arranged to cut kerfs in a coal vein within a mine. An object of my invention is to provide a coal cutting machin ... Truck construction Referring to the drawings in detail, I is a truck base (Figures 4 and 5) supported on truck frame members 2 which in turn ...
The recognition of cutting state of coalrock is the key technology to realize "unmanned" mining in coal face. In order to realized realtime perception and accurate judgment of coalrock cutting state information, this paper combined the field test sampling, construction technology of complex coal seam, virtual prototype technology, bidirectional coupling technology, data processing theory ...
US641089A Hand coalcutting machine. Google Patents Hand coalcutting machine. Download PDF Info Publication number ... coal standards hand machine Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. ... construction Methods description 6;
cut a kerfin an upward direction, this kerf to time. I, the cutting sections of the frame. being wide enough to allow the frame to en ter it. The open frame is so constructed that it will Surround the downward hanging mass of coal, which can be broken loose from time In the particular construction of mining machine illustrated, the open ...
particularly in machines and tools suitable for cutting coal in strata of comparatively Small height. As now practiced strata of small height are cut by handwork because the use of machinery is uneconomical, such machinery as now constructed being large and heavy. The object of the improvements is to provide a coal cutting machine which 25 39 35 40
The shearer is an important piece of equipment at the fully mechanized coal mining face ().The pick is the core component of the cutting unit as the key device of the shearer [1,2].During automatic and intelligent cutting at the coal mining face, the complex geological conditions, such as the fold structure, fault structure and magmatic intrusion, induce distinct occurrence conditions of coal ...
Coalcutting machine . Download PDF Info ... machine cutter wheel arm Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) ... construction Methods description 8;
coal machine cutting machine bar cutter Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) ... construction Methods description 2;
ALIGNMENT SYSTEM FOR COALCUTTING EQUIPMENT A. V. ll'yusha and A. A. Solntseva UDC :5:52 Automatic alignment systems are a very promising class of devices for keeping coalcut ... As the construction of such systems, together with the coalcuttlng machines, and their testing are very timeconsuming and expensive, it is important ...
coal cutting machine machine Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) ... construction Methods description 8;
What is claimed: 1. An improved automated coal mining system, comprising: a rotating cutterhead drum fitted with bit blocks and replaceable bit picks; a set of strain gauges configured to measure a series of mechanical forces experienced by at least one replaceable bit pick mounted to a bit block on a cutterhead drum for operation during coal cutting; and a resonant microwave patch antenna ...
In a cutting machine (1) with cutting heads or rollers (7) rotationally mounted on a pivotable cutting arm (6), including a loading ramp or a conveyor (9) extending in the direction to the mine face for receiving and removing the cut material, wherein the cutting arm (6) is mounted on a carriage (4) displaceable on guides extending in the longitudinal direction of the machine, the carriage (4 ...
Introduction Coal cutting machines are often used underground to assist in breaking down the coal so that it can be loaded out. A coal cutter cuts into a portion of the seam, making a slot along the coal face, after which the remaining part of the coal is cut down by the use of hand or pneumatic picks or is broken down by explosives.
v9 mm May 6, 1952 H. G. COAL CUTTING AND LOADING MACHINE 5 SheetsSheet 3 Filed July 22. 1949 Harold G. Patented May 6, 1952 COAL CUTTING AND LOADING MACHINE Harold G. , Peytona, W. Va., assignor of thirtythree and onethird per cent to Jesse C. Clendenin and thirtythree and onethird per cent to Aubrey I. Glendcnin, both of ...
cutting tool coal machine spindle Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) ... construction Methods description 9;
The technology of coal mining has gone through continual evolutions and several revolutionary changes which transformed the methods, equipment, and productivity over the decades. In recent years, advances in technology focused more on the use of communication systems, automation, and data sciences for the health and safety of the miners and ...
In order to realized realtime perception and accurate judgment of coalrock cutting state information, this paper combined the field test sampling, construction technology of complex coal...
Coal mines operated without electricity. Electricity began to be adopted in mining and manufacturing in the late 1880s and the 1890s. (Electricity was first introduced into Ohio's bituminous coal mines in 1889.) The introduction of electricity in coal mines greatly facilitated the introduction of laborsaving machinery. 1891.
Coal cutting machine having a vertically movable cutter chain jib Download PDF Info ... Prior art keywords jib chain cutting machine bracket sprocket Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of ...
Abstract. Automatic alignment systems (AAS) are a very promising class of devices for keeping coalcutting equipment on a straight line. Experience in the design of AAS and preliminary tests have revealed that the choice of fundamental parameters for the systemsuch as the zone of permissible curves and the spacing of linearitymonitoring transducers and electrohydraulic control valves ...
The toplevel architecture of 5G+ intelligent coal mine systems combines intelligent applications such as autonomous intelligent mining, humanmachine collaborative rapid tunneling, unmanned auxiliary transportation, closedloop safety control, lean collaborative operation, and intelligent ecology.
machine mining arm coal Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number Publication date Application granted granted ...
Coalcutting machinery . Download PDF Info ... A US 413796A US 413796D A US413796D A US 413796DA US 413796 A US413796 A US 413796A Authority US United States Prior art keywords coal frame cutters motor machine Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. ... construction ...
Smart mining and problem origin. We obtained some operational equipment and coal seam data in a working face from a coal mine located in China's Shandong region. The smart level of this working face is high, and it adopts the technologies of shearer memory cutting, hydraulic support automatic following shearer moving, remote centralized control and manual intervention inspection ...
Specifications Cutting height: Typically given as a range of seam thicknesses that can be extracted by the longwall shearer. Installed power: The combined power supplied by one or several electrical motors for the ranging arms and cutting drums, often in Watts.
Our comprehensive range of mechanical cutting equipment offers effective solutions for a wide range of underground mining and construction applications, including rapidentry roadway development, demanding production settings without drilling and blasting, as well as boring of ore passes and ventilation shafts. Innovating the future Technology
equipment, ventilation equipment, drainage equipment and other equipments and devices; Level 3 terms, including the mechanized mining bracket, loader, hydraulic support, shearer, scraper conveyor, boring machine, bolt machine, coalfired power station, electric motors, transformers, mine cutting
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