Feng Huihui

TL;DR: In this paper, a systematic search of literature published during the last fifteen years was carried out and based on the analysis on these papers, these advanced design techniques and methods were summed up as three issues: the kinetic properties of the screen body by dynamic modeling, the optimal screening operational parameters by discrete element method and the dynamic design of the body by finite element method.

TL;DR: In this paper, a dual-side excitation large vibrating screen (DELVS) with metal cylindrical coiled springs is theoretically and experimentally studied, and a fundamental three-degree-of-freedom (3-DOF) dynamic model for DELVS is established firstly.

Abstract: The invention relates to a tapered hybrid bearing assembly part with a textured shaft neck surface. The tapered hybrid bearing assembly part comprises a bearing and a shaft neck, wherein the bearing comprises housings and bearing pads; oil inlet channels are arranged on the housings; an oil cavity and an oil sealing surface are arranged on the inner surface of each bearing pad; a small-hole restrictor is arranged between each oil inlet channel and the corresponding oil cavity; inner holes of each bearing pad are tapered holes; the shaft neck is of a tapered structure matched with the bearing pads; a surface texture is arranged on the shaft neck surface; the surface texture is one or more of a bump, a pit and a groove; the bump, the pit or the groove is distributed in the surface, matched with the oil sealing surface of each bearing pad, of the shaft neck in the bus direction of the tapered shaft neck; and a lubricating medium enters the oil cavities after being restricted through the small-hole restrictors, flows through the oil sealing surfaces and is discharged from the end surface of the bearing, wherein the lubricating medium is pressure water or low-viscosity pressure oil. The tapered hybrid bearing assembly part with the textured shaft neck surface can improve bearing capacity of the bearing while reducing the high-speed temperature rise of the bearing, and increasing the limited working rotation speed.

TL;DR: In this article, a composite vibrational energy collector with a conical cavity beam is presented, which consists of an outer frame, an electromagnetic energy collecting unit and a composite beam.