USA US386138A USA USA US A US A US A US 386138 A US386138 A US 386138A US A US A US A US A US A US A Authority US United States Prior art keywords machine frame pedestals elements drum Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
COAL CUTTING MACHINE William Vincent Sheppard, Rainworth, near Mansfield, England Application March 23, 1948, Serial No. 16,537 In Great Britain April 1, 1947 2 Claims. (CI. 26230) This invention relates to coal cutting machines of the kind which are adapted to be traversed
10 of 19 | . Coal miners rest during a shift in the break room of the Gruve 7 coal mine in Adventdalen, Norway, Monday, Jan. 9, 2023. The mine is scheduled to be shut down in two years, cutting carbon dioxide emissions in this fragile, rapidly changing environment, but also erasing the identity of a centuryold mining community that fills many with deep pride even as the primary activities ...
Hydraulic Mining Shovels. Hydraulic mining shovels have been the goto machinery for the mining industry since the 1970s. Such shovels load rock and coal onto other heavy machines. A standardsize hydraulic shovel can carry about 30 cubic meters of material in the metal bucket at the front.
Traction Power: 9kw Traction: Motor Power: 37kw Rated Voltage: 380V/660V Motor Model: Ybc37 Cut Chain Line Speed: 1900mm/S
Coal cutting machine ropes are . . . . . . . . wire rope core. A. Fibre. B. Steel strand core. C. Independent wire rope. D. All. View Answer. View Answer. Steel wire rope of 25mm diameter weighing 37N/m has 6 strands of 7 wires each. The diameter and tensile strength of each wire are and 1800 MPa, respectively. The factor of safety for ...
USA Coalcutting and similar machine Google Patents Coalcutting and similar machine Download PDF Info Publication number USA ... machine haulage anchoring rope 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 ...
Garforth invented a coal cutting machine and owned the Diamond Coal Cutter works at Wakefield. He took out patents in relation to parts of the Weg apparatus and sold over 100 units. ... after an "automatic rope greaser, a guide greaser, an electric rotary drill, a percussive coal cutting machine, automatic feed apparatus for drills, [and] a ...
Smith extended the work on diamond sawing to diamond wire rope cutting (Smith, 1992). Diamond wire cutting is common in other forms of mining and quarrying, particularly for dimension stone (Ashmole and Motloung, 2008). ... The drum covers the full width of machine and operates above gathering arms that load the coal through the machine onto a ...
Introduction of 50KW Chain Coal Cutter Shearer Cutting Machine Supplier The MJ 5 0 Mining Chain Coal Cutting Machine can be used in mines where methane, coal dust, hydrogen sulfide, carbon dioxide, etc., do not exceed the safety levels specified in the coal mine safety regulations. It can be used for the cutting of the coal mining face of the gently inclined ultrathin composite coal seam with ...
The vertical lift lump coal cutting machine has the beneficial effects that (1) vertical lift ensures the vertical impact angle when the cutting mechanism excavates coal un and down; (2) by adopting the vertical lift mechanism, the length of the lift mechanism is shortened, so that the length of the body is greatly reduced; (3) the vertical ...
JAG Industries are the manufacturers of JAG Hydraulic Cutting Equipment range of products, the UK's leading manufactured hydraulic cutting equipment brand. We are a hydraulic engineering company producing world class hydraulic cutting solutions and services. We predominantly supply products to the Offshore Energy and Nuclear Power industries; however, our vast industry experience and ...
Coal Cutting Machine Factory Select 2023 high quality Coal Cutting Machine Factory products in best price from certified Chinese Plastic Machine manufacturers, CNC Cutting Machine suppliers, wholesalers and factory on
Bug dust The fine particles of coal or other material resulting form the boring or cutting of the coal face by drill or machine. ... Dragline A large excavation machine used in surface mining to remove overburden (layers of rock and soil) covering a coal seam. The dragline casts a wire ropehung bucket a considerable distance, collects the ...
In addition, the whole system undergoes vibration during the drilling process and consumes part of the energy. Machine vibration is the result of elastic energy that gets generated with cutting and is stored as tension in mechanical parts of the drilling machine. Vibration is more severe when hard, brittle, and jointed rocks are drilled [3].
The utility model relates to an elevatable rotating coal cutter which comprises a drawing mechanism, an elevating mechanism, a rotating mechanism and a cutting mechanism. The drawing mechanism is composed of No. 1 electromotor, No. 1 reduction gearbox, a bull wheel and a directive wheel; the elevating mechanism is composed of an elevating stand, a sliding plate, a left guide way, a right guide ...
China Coal Cutter manufacturers Select 2023 high quality Coal Cutter products in best price from certified Chinese Coal Mining Equipment, Drilling Bit suppliers, wholesalers and factory on
An important feature of the coal cutting machine illustrated is that instead of removing and replacing the cutters one by one from the chain while the latter is in the machine, as for example for sharpening the cutters, I mayreadily uncouple and withdraw the chain with its attached cutters, insert another chain with cutters, couple the same and ...
Pull per round m. Coal yield/kg of explosive te (soligex) Coal yield/detonator te. One driller and two helpers drill 6070 holes in a shift of 8 hours; one shot firer, 2 explosive carriers and 1 stemming material carrier constitute the blasting crew and fire nearly 60 shots in a shift of 8 hours.
60, according to the type of machine. • The supply for electrically driven coal cutting. machines is normally alternating current and is. supplied to the machine at a voltage of 440, 500 or. 600 volts. • Compressed air is usually supplied at a pressure of. about 60 lb. per square inch.
Coal cutting machine ropes are . . . . . . . . wire rope core. D. All. Steel wire rope of 25mm diameter weighing 37N/m has 6 strands of 7 wires each. The diameter and tensile strength of each wire are and 1800 MPa, respectively. The factor of safety for raising a cage of weight 60 kN from a depth of 200m is.
Rope drum capacity: 20000mm. Wire rope specifications: 6 × 37 (Φ) Traction: Machine weight: 750 ± 2kg. Traction power: 5KW. Cutting power: 10KW. Cooling method: water cooling. Noload lowering speed: 4018mm / min. Cooling method: Cooling in spiral water channel. Working method: back and forth along the coal. Dustproof method ...
The utility model provides a doubleknife coal cutter, which mainly comprises a traction portion and a cutting portion, wherein the traction portion and the cutting portion are driven by an electric motor. The traction portion consists of a speed reducer and a worm and worm gear transmission pair, the speed reducer and the worm and worm gear transmission pair are mounted inside a traction box ...
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