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Application scope: The coal cutter is applicable to long-wall coal face whose height is 0.8-1.5m, inclined angle is less than 16 o and coal hardness is less than 3.5 and which contains little dirt sand. It adopts stepless variable speed hydraulic tractor, hydraulic components with original packaging and mature and reliable technology and features stable operation, …
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2. Longwall shearers The coal is cut from the coal face by a machine called the shearer (power loader). This machine can weigh 75–120 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 …
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An Unsupervised Intelligent Method for Cutting Pick State Recognition of Coal Mining Shearer. January 2020; IEEE Access 8:196647 ... 5 China National Coal Mining Equipment Company Ltd., Beijing ...
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New advances in automatic shearer cutting technology for thin seams in Chinese underground coal mines October 2021 Energy Exploration & Exploitation 40(1):0520
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Introduction of Mj50 Chain Coal Cutting Machine Coal Shearer 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 …
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In order to better meet the needs of users and bring new value growth points to enterprises,the concept of " product+service" is introduced into the conceptual design of shearer. A service-oriented manufacturing (SOM) mod- el based on quality function deployment embedded cloud model (QFD-ECM) is constructed to realize the mutual pro …
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The year before, Joy produced its first longwall shearer, followed by a low-seam shearer in 1986 and the high-seam shearer in 1990. Bolters were added to the Joy lineup of underground mining equipment in 1995, the same year the company delivered its 5,000th JOY 10SC shuttle car.
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2.1 Introduction of MG500-1180/WD coal shearer MG500-1180/WD coal shearer (Fig. 2), which is made by China National Coal Group Co., Ltd, consists of 4 main parts: cutting unit, traction unit, electronic controlling unit and hydraulic unit. Main parameters of this coal shearer are shown in Table 1. In mechanical system, there
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The coal shearer is normally composed of the travelling unit, the shearing unit and the engine body [1], which is designed for the underground coal exploration since 1950s [2, 3]. For a coal shearer system, the shearing loads generated from the coal cutting transmit from the rockers to the engine body of the coal shearer and
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Longwall Mining Equipment - Coal Shearer. Mining Clients worldwide have strong desire to mine low-seam or thin seam reserves. In some cases, thinner seam overlays the thicker seams. ... China : Room 1102, Building A, AVIC International Plaza, No. 777 Yizhou Avenue, High-Tech Zone, Chengdu Tel: +86 ;
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There are two major automatic mining technologies for thin seams: one using a coal shearer and the other one a plough. Coal shearer has the advantages of high cutting efficiency, high ability of coal-rock breaking and good adaptability. It is the primary approach of mechanized excavation for thin seam in China. According to incomplete ...
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A method of cutting coal with three drums was advanced, a three-drum shearer was designed, and the free mode and restrained model under prestress of the third drum were analyzed in large mining with ANSYS Workbench 14.0 to solve the damage problem of the cutting blade in a large mining face. The vibration modes caused by its …
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2 Equipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang 110142, PR China * [email protected]. Received: 19 October 2019 Accepted: 18 January 2020 Abstract. Long wall mining is most widely used in coal mining of China, and coal shearer is the most important machine due to its direct role in cutting coal.
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