Research And Application On Hydro Viscous Drive

Hydro viscous soft-start device is a new transmission which depends on the shear force of oil film to pass power. It not only can realize the no-load starting of the motor, reducing the impact of machine and power grid, but also can realize non-step speed regulation, saving energy.This article discusses the theory of the HVD and makes a design and stress analysis of the friction pair. It also put forward innovatively that the oil film is the condition of laminar flow or turbulent flow and oil film is the shear stress calculation formula when the status is turbulent flow. Based on the analysis of the structure of various friction plate in the oil trough, this article makes the stress analysis and presents innovatively that the fillet or chamfer at the steps of the oil trough can greatly improve forming ability and load carrying capacity of the oil film. It also makes a thermal analysis and hydraulic system design of the HVD. On the background of the analysis of integrating process of the friction plate, the paper gives the model and formula of each friction area. After the analysis of the model of each friction area, it obtains the foreign curve of the HVD by the experiment and gives their different curves of the controlling oil pressure. In addition, it builds the mathematical model of HVD and proposes the measure to improve the stability of the rotate speed of the exporting shaft. Furthermore, it builds the experimental equipment of HVD. Based on the equipment mentioned above, it makes an experiment about some basic properties of HVD and the thermal deformation of the friction plate. With the example of Huaibei Coal Mining Bureau Zhu Xian Wan Grand angle belt conveyor, this paper designs the control system of the HVD and makes a research of power balance of HVD during the starting process of the multi-point driving.