Results 11 to 20 of about 125,970 (301)
Status and development of shearer
Gong-kuang zidonghua, 2017 According to problems existed in development status of thin seam shearer and thick seam shearer, research directions of shearer technology were put forward combing with development trend of shearer, which were improving reliability of key components such
YANG Yu
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IEEE Access, 2021 The high-precision positioning of the shearer is the key technology to realize the automation of longwall mining. Since mine is a Global Position System (GPS)-denied environment, highly autonomous Inertial Navigation System (INS)/odometer integrated ...
Xiaowei Xu +5 more
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Research of automatic control method of shearer in machinery-tracked automatio
Gong-kuang zidonghua, 2014 The paper gave structure of automatic control system of shearer. It introduced realization of automatic control of the shearer, that is to realize coal cutting process of the shearer in one sampling interval length through using full cutting depth ...
LI Jun, LIN Fuya
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矿业科学学报, 2023 If the shearer is cutting coal using the "memory cutting" technique, a manual demonstration is required.The memory cutting technology has higher requirements on the reserving conditions of coal seams.When the coal seam fluctuates greatly, frequent manual
Hou Yunbing +5 more
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Research status and prospect of shearer positioning technology on fully mechanized coal mining face
Gong-kuang zidonghua, 2017 On the basis of development status of shearer positioning technology on fully mechanized coal mining face at home and abroad, characteristics of conventional shearer positioning technology, shearer positioning technology based on strapdown inertial ...
XIA Ting, LI Wei, WANG Chao, LI Yuche
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Cooperative control technology of shear and hydraulic support on fully-mechanized coal mining face
Gong-kuang zidonghua, 2020 Aiming at low cooperative control efficiency of shearer and hydraulic support on fully-mechanized coal mining face, a cooperative control technology of shearer and hydraulic support on fully-mechanized coal mining face was proposed based on technologies ...
LIU Qing +3 more
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Meitan kexue jishu, 2023 The current shearer control system is difficult to deal with the complex working conditions of the underground working face. The realization of the intelligent height and speed regulation control of the shearer is faced with three major technical ...
Yao CUI, Zhuang YE
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‘What price widowhood?’ : The faded stardom of Norma Shearer [PDF]
, 2016 © The Editor(s) (if applicable) and The Author(s) 2016. This is a post-peer-review, pre-copyedit version of a chapter published in Lasting Screen Stars: Images that Fade and Personas that Endure.
Lanckman, Lies
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Longwall shearer cutting force estimation [PDF]
, 2014 Longwall mining is an underground coal mining method that is widely used. A shearer traverses the coal panel to cut coal that falls to a conveyor. Operation of the longwall can benefit from knowledge of the cutting forces at the coal/shearer interface ...
Gurgenci, H. +3 more
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Design of drive and control system of 4-quadrant converter for traction shearer
Gong-kuang zidonghua, 2016 The paper designed a new drive and control system of 4-quadrant converter for traction shearer according to index requirements of 4-quadrant converter of shearer, and introduced design of hardware circuit and software implementation of the system.
DENG Yonghong, CAO Haokun, ZHANG Quanzhu
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