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Introduction of Shearer Accessories Roller. Shearer roller is suitable for mining thin coal seam with coal seam thickness of 0.75-1.5 meters, coal hardness of f ≦ 2.5 and coal seam inclination angle of 16 degrees. When the coal seam inclination exceeds 16, use a unit-supplied hydraulic non-slip winch.
Get PriceProduct Introduction. SWS160/182-NWD is a multi motor transverse arrangement,airborne Short Wall Coal Shearer which can be matched with single prop, hinged top beam,suspended support and be used in short wall fully mechanized mining and fully mechanized working face.Total power is 182kW.According to the working face corollary equipment and the structure of the tunnel,the coal shearer can be ...
Get PriceIntroduction Of YQ100 Hydraulic Pushing Slip Tool YQ100 Hydraulic push slide tool (or called shift slide jack) is a double-acting fluid back within hydraulic mechanism and can realize coal mine blasting mining face or general mechanical coalface SGW-150C, SGWD-180P-type scraper conveyor goes.
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Get Price2017-8-27 · duced by China. Coal accounted for 76.6 % and 67.1 % of China’s primary energy production and consumption structure, respectively, and 47.5 % and 50.2 % of the world coal production and consumption, respectively. Globally, China leads in both coal output and consumption. By 2020, China’s coal output is expected to reach 3,800 million tons,
Get PriceShaanxi Heli Mechanical Engineering Co., Ltd., Experts in Manufacturing and Exporting Coal Mining Machine Accessories, Mechanical Spare Parts and 398 more Products. A …
Get Price2020-10-12 · Coal plays an important role in the world energy security [1–3]. As key equipment of longwall mining coalface, the shearer is the key to achieve safe and e cient coal production [4–6]. The traction unit drives the shearer to move along the coalface and plays an important role in supporting and guiding the shearer.
Get Price2015-7-21 · Thick and ultra-thick coal seams are main coal seams for high production rate and high efficiency in Chinese coal mines, which accounts for 44 % of the total minable coal reserve. A fully mechanized top-coal caving mining method is a main underground coal extraction method for ultra-thick coal seams. The coal extraction technologies for coal seams less than 14 m thick were extensively …
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Get PriceProduct Introduction. SWS160/182-NWD is a multi motor transverse arrangement,airborne Short Wall Coal Shearer which can be matched with single prop, hinged top beam,suspended support and be used in short wall fully mechanized mining and fully mechanized working face.Total power is 182kW.According to the working face corollary equipment and the structure of the tunnel,the coal shearer can be ...
Get Price2015-7-21 · Thick and ultra-thick coal seams are main coal seams for high production rate and high efficiency in Chinese coal mines, which accounts for 44 % of the total minable coal reserve. A fully mechanized top-coal caving mining method is a main underground coal extraction method for ultra-thick coal seams. The coal extraction technologies for coal seams less than 14 m thick were extensively …
Get Price2021-3-8 · As the key equipment in longwall mining, the shearer determines the efficiency of coal production by its performance and capability. In cutting condition, the loads of cutters are severe and complicated [1, 2]. The cutting unit is the main working component of the shearer and directly bears the loads of coal cutting [3].
Get Price2017-9-24 · In a fully mechanized coal-mining face, the positioning and attitude of the shearer and scraper conveyor are inaccurate. To overcome this problem, a joint positioning and attitude solving method that considers the effect of an uneven floor is proposed. In addition, the real-time connection and coupling relationship between the two devices is analyzed. Two types of sensors, namely, the tilt ...
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Get Price2021-6-1 · Mine dust pollution has long been restricting the development of China's coal and metal mining industry. Now, mechanical ventilation, spray dustfall, dust collector dust removal, and foam dedusting are used to control dust pollution in mines [1,2]. Among them, the spray dust has the characteristics of low cost, good effect and convenient operation.
Get Price2014-10-10 · Fully mechanized mining (FMM) technology has been applied in Chinese coal mines for more than 40 years. At present, the output of a FMM face has reached 10-million tons with Chinese-made equipment. In this study, the new developments in FMM technology and equipment in Chinese coal mines during past decades are introduced. The automatic FMM technology for thin seams, complete …
Get PriceA backfilling hydraulic support with six pillars used for working face roof support and goaf backfilling in coal mine is designed, and the structure and working principle of the backfilling hydraulic support are described. In order to improve the working stability of backfilling hydraulic support, the differential equations of motion and the state space model of backfilling hydraulic support ...
Get PriceAbstract. Mine mechanization, especially the mechanization of underground hard rock mines provides a large potential for reduced costs and improved profitability. This paper examines a number of successful developments mechanizing underground mine excavation, including raises, shafts, tunnels, and stopes.
Get PriceA model for virtual simulation analysis of the rigid-flexible coupling of a shearer has been developed with the objective of addressing problems associated with lifetime mismatch and low reliability of pin rows of a scraper conveyor and the corresponding support mechanism of a shearer. Simulations were performed using the experimental roller load as stimulus.
Get Price2020-9-23 · face, which is of great significance to the safety of coal miners and the normal operation of coal mining equipment. In recent years, with the continuous development of intelligent mining technology [1,2], the roboticized hydraulic support technology has been paid more and more attention by scholars and coal mining managers.
Get Price2021-6-2 · in even restrictive space [52–71]. In a deep mine environment, cameras can be used to work in smoky, dusty and dark environments. The use of the thermal imaging method in the mining industry offers a wide range of research opportunities in view of the heat production that takes place during the operation of all powered equipment. Factors such
Get PriceIn order to improve the synchronicity of the gripper of automatic drilling rig, three kinds of clamping devices for automatic drilling rig were designed to overcome the problem of deviation between the clamping center of the clamping device and the rotary center of the power head. At the same time, the driving characteristics, structures and working principle of the three grippers were introduced.
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Get Price2021 International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology (MEMAT) 2021 January 15-17 2021, Guilin, China. Accepted papers received: 10 February 2021. Published online: 05 March 2021. Open all abstracts.
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Get Price2017-11-1 · The energy consumed in U.S. for mining industry comes from 34% diesel, 32% electricity, 22% natural gas, 10% coal and 2% gasoline. Materials handling was in average the largest energy consumer (42%) followed by processing (39%) and extraction (19%). Diesel fuel is mostly used in material handling to 87% [221], [222].
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Get Price2008-12-12 · Post by John onJul 17, 2008 at 3:49pm. So that the none mining types and those not familiar, I'll post the voltages in regard to electricity in UK mines. When I started in the early 1960's, most if not all NCB pits used 3.3kv, (3300 volts) as the standard high voltage supply from the surface, down the shafts and transmitted around the workings.
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Get PriceThe failure of the key parts, such as bearings and gears, in cutting drum long chain gear driving system of long-wall shearer is a crucial factor for service life of gear systems. A short driving system is driven by multiple electric motors for cutting drum has been proposed as an alternative to long chain gear driving system. An electromechanical dynamic model based on lumped-parameter method ...
Get Price2021-3-25 · Serious wear phenomena occur in mining machinery under complex working conditions, and the wear of machine parts is primarily caused by the synergistic effect of adhesive wear, abrasive wear ...
Get PriceThe performance of lock-rope mechanism affects the safe and efficient operation of mine hoisting system directly. The lock-rope mechanism with wedge angle 5° was designed by the mechanical analysis of wedge lock rope. Its entity model was established and the dynamic process of working is simulated by using the ANSYS/LS-DYNA. The results show that the wedge lock rope mechanism has the ability ...
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Get PriceThe purpose of logging roads is an effective carting out of the planned amount of harvested wood. Main problems: the problem of increasing transport accessibility of forest resources; the need to take into account and neutralize the negative impact of factors that affect the carting out of harvested wood; minimize costs across the entire supply chain.
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