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STUDY ON PROFILE MODIFICATION OF GEAR COUPLING USED IN PLANETARY TRANSMISSION
Published 2016-01-01“…It applies the means of equivalent meshing error to consider the manufacture and installation error of planetary gear train key components,a dynamic model of planetary gear train has been built,and according to the geometric relations between drum shaped spline and sun gear shaft,the tooth profile of drum gear has been modified to reduce the misalignment of the two connecting shafts. …”
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182
THIN SEAM SHEARER RELIABILITY ANALYSIS UNDER COMPLEX COAL SEAM OCCURRENCE CONDITIONS
Published 2016-01-01“…According to the resistance of coal mining machine drum in the complex coal seam condition,generated the text files of the drum load based on Matlab programming. …”
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ANALYSIS OF SHEARER SIDE DIRECTION VIBRATION CHARACTERISTICS UNDER DIFFERENT HAULAGE SPEED
Published 2018-01-01“…The axial direction of shearer drum load was used as an external excitation,and the effect of different haulage speed on lateral direction vibration characteristics of shearer were solved by using numerical analysis method. …”
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185
ANALYSIS OF SHEARER VERTICAL DIRECTION VIBRATION CHARACTERISTICSUNDER DIFFERENT COAL AND ROCK HARDNESS
Published 2019-01-01“…The results show that the mean of coal cutting impedance has great influence on vibration displacement of front and rear cutting unit when the range is 200 kN/m ~ 400 kN/m,the displacement range of front and rear drum is 13. 42 mm ~ 26. 83 mm、8. 19 mm ~ 16. 37 mm,and the displacement range of front and rear rocker arm is 5. 31 mm ~ 10. 62 mm、3. 32 mm ~ 6. 65 mm.Finally,the results of model is verified by experiment.…”
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186
CUT PICK CUT LINE DISTRIBUTION AND THE FINDINGS OF A STUDY OF LOAD SPECTRUM
Published 2017-01-01“…According to studying Angle cutting conditions of shearer drum cutting teeth distribution on the influence law of load spectrum,which provides reference for the design of the cutter tooth,in which equivalent test tooth holder to roll the same spiral blades cut line cut tooth load the real-time online monitoring,synchronous export analysis after storage.Experimental results show that the system is reliable,stable performance,can real-time dynamic testing of cutter tooth cutting force changes,through different cut line cut tooth time-cutting force change curves available:cutting force curve variation rule has the similarity,oblique cutting coal and rock,drum cutting tooth load whole curve peaks and troughs alternating form,cutting teeth with different cutting depth change of cutting force changing process;Same cutting resistance of greater than its feeding resistance,but its fluctuations are similar,have many irregular fluctuations;Single pick on the cutting resistance and traction resistance of instantaneous value obey the symmetry good Gamma distribution,the distribution parameters with pick in the cutting line spacing end plate distance relationship is a Fourier series,for the research on the rules of cutter tooth load spectrum provides a new method.…”
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187
Effect of Effective Working Gap Position on Braking Performance of T-type Magnetorheological Brake
Published 2021-09-01“…The results show that when the MRF used in brake, the overall dimensions of consistent case, through the contrast of braking torque of the simulation analysis results and the theoretical calculation results, the relative difference in disc work condition is greater than the drum-type working state. Among them, under the disc working state, the relative difference of gap <italic>A </italic>is the largest, in the drum-type working state, the relative difference of gap <italic>D</italic> is the smallest. …”
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Experimental and Numerical Evaluation of the Ablation Process of Carbon/Carbon Composites Using High Velocity Oxygen Fuel System
Published 2017-01-01“…Two typical ablation morphologies of the carbon fibers, which are drum-like and needle-like shapes, were observed depending on the alignments of fibers to the flame directions. …”
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Novel Modifications and Delivery Modes of Cyclic Dinucleotides for STING Activation in Cancer Treatment
Published 2025-01-01“…Yanjun Lu,1,* Zhiyan Li,2,* Xudong Zhu,1 Qingwei Zeng,1 Song Liu,1 Wenxian Guan1 1Division of Gastric Surgery, Department of General Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, People’s Republic of China; 2Division of Thoracic Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, People’s Republic of China*These authors contributed equally to this workCorrespondence: Song Liu; Wenxian Guan, Email liusong@nju.edu.cn; guan_wenxian@sina.comAbstract: The microenvironment tends to be immunosuppressive during tumor growth and proliferation. …”
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Novel Molecular Targets in Malignant Diseases of Digestive System
Published 2013-01-01Get full text
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194
The Immunomodulatory Properties of Mesenchymal Stem Cells
Published 2018-01-01Get full text
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On eigenfunctions corresponding to first non-zero eigenvalue of the sphere $ S^n(c) $ on a Riemannian manifold
Published 2024-12-01“…We recall classical themes such as 'on hearing the shape of a drum' or 'can one hear the shape of a drum?', and the discovery of Milnor, who constructed two flat tori which are isospectral but not isometric. …”
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197
Candidate Species for Florida Aquaculture: Atlantic Croaker, Micropogonias undulatus
Published 2007-10-01“…Miller, describes this medium-sized fish of the drum family, its culture methods, and summarizes its potential for aquaculture in Florida. …”
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Candidate Species for Florida Aquaculture: Atlantic Croaker, Micropogonias undulatus
Published 2007-10-01“…Miller, describes this medium-sized fish of the drum family, its culture methods, and summarizes its potential for aquaculture in Florida. …”
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199
Magnetic Damping For Maglev
Published 1998-01-01“…A plate attached to a permanent magnet levitated on a rotating drum was tested to investigate the effect of various parameters, such as conductivity, gap, excitation frequency, and oscillation amplitude, on magnetic damping. …”
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Spatial distribution and migration law of respirable dust in fully mechanized mining face
Published 2025-01-01“…Considering that there is air leakage when the air flow on the support side flows towards the goaf, the carrying capacity of the air flow is weakened, and the particle size of dust particles carried is smaller; the dust generated by drum coal cutting presents two stages in the direction of the working face: the section between 70 m and 120 m from the intake airway is a “rapid descent section”, and the section between 120 m and 280 m from the intake airway is a “slow descent section”. …”
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