Results 31 to 40 of about 566 (209)
Transparent mining mode and key technologies of fully mechanized working face
Gong-kuang zidonghua, 2022 In order to solve the problem that the intelligent mining technology based on adaptive working face geological conditions can not meet the practical engineering application requirements, a transparent mining mode of fully mechanized working face is ...
YUAN Changsuo, WANG Feng
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Research on key technologies of 3D laser scanning modeling in fully mechanized working face
Gong-kuang zidonghua, 2022 According to the boundary information of the coal wall and roof in the 3D laser scanning model of fully mechanized working face, the shearer can automatically adjust the cutting height of the drum to realize the coal precise mining.
RONG Yao +4 more
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Computational Method on the Shearer Position
TELKOMNIKA Indonesian Journal of Electrical Engineering, 2013 According to problems such as low accuracy, high error in the shearer body position, this paper proposes a new computational method combining with the information of shearer, scraper conveyor and hydraulic support in order to realize three machine positioning. Using the sensor information and static-dynamic fusion, this paper solves positioning problem
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A Joint Positioning and Attitude Solving Method for Shearer and Scraper Conveyor under Complex Conditions [PDF]
Mathematical Problems in Engineering, 2017 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.
Jiacheng Xie +4 more
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Mathematics, 2022 Measuring the straightness of the scraper conveyor, which is an indispensable piece of equipment in a fully mechanized coal face, can prevent accidents such as derailment of the shearer and is also important for the precise positioning of the shearer and
Jiakun Lv +6 more
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Digital twin: meeting the technical challenges of intelligent fully mechanized working face
Gong-kuang zidonghua, 2022 The goal and task of intelligent fully mechanized working face are to independently complete the reliable coal cutting of the fully mechanized working face, maintain the geometric relationship of the working face and reliable roof support.
GE Shirong +6 more
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Meikuang Anquan, 2022 Aiming at the problem of straightness detection of scraper conveyor in fully mechanized mining face, the straightness detecting method of a scraper conveyor based on combined inertial navigation is proposed.
YANG Bo, WU Ning
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Degradation mechanism of the von Willebrand factor A2 domain by nattokinase
FEBS Letters, EarlyView.Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto +3 more
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Gong-kuang zidonghua, 2019 In view of problem that existing mechanical compensation methods of lever arm effect ca't get angular acceleration information in real time, an improved method of lever arm effect error compensation was proposed on the basis of analyzing cause of lever ...
SI Zhuoyin, LI Wei, TONG Junling
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Energies, 2022 For effective mining, it is essential to ensure that the picks are positioned correctly on the working unit of a mining machine. This is due to the fact that the design of roadheader cutting heads/drums using computer-aided tools is based on the ...
Piotr Cheluszka, Amadeus Jagieła-Zając
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