The Dynamics Analysis And Simulation Investigation Of The Three-ring Gear Reducer Based On Virtual Prototyping Technology

Three-ring gear reducer is a new type of involute planetary gear transmission device.Its bearing capacity is 2~3 times that of ordinary multi-cylindrical gear reducer for the same quality and 2 times that of cycloidal-pin wheel reducer for same volume.It’s more than 50% cheaper than hardened reducer in same transmission ratio.Because the advantage of high load capacity, large transmission ratio, high grade, high efficiency, small size, wide applicability,it has been applied in metallurgy, mining, petroleum, chemical and other industries.However,due to the later adventure,short cycle of the actual application,shortage of relevant theoretical design and manufacturing experience,there are vibration, noise,higher local temperature in the process of actual application of the product.In this paper, the ring gear reducer with different mechanism is used as the research object.At same time,Making full use of the advantage of virtual prototyping technology in solving dynamic problems, studying the dynamic behavior of three ring gear reducer to further understand the impact of parallel moving gear mechanism structure, parameters and machining on the dynamic behavior of three ring reducer,which will provide theoretical basis for its application in oil,robotics field.This paper mainly completed the following work:The research status and development trend of three ring gear reducer at home and abroad are reviewed in this paper.At the same time,pointing out the problems of three-ring gear reducer in the process of application.In order to further study the three-ring gear reducer, this paper introduces the structural characteristics and working principles of the outer parallel move gear.Completed the theoretical calculation of transmission ratio, meshing force and transmission efficiency target three-ring gear reducer.According to parameters of Daqing oilfield equipment group JSQ2073.0 type gear reducer,complete the basic geometric parameter design and check the gear pair strength,coincidence degree, tooth profile overlap interference coefficient, etc. whether coincide with the theoretical value to verify the correctness of the design of geometric parameters of three ring gear reducer.Accomplished the parametric model of three ring gear reducer to lay the foundation for creating a virtual prototype model.The flexible body theory and its advantages in solving practical engineering problems are expounded in detail.Using the finite element analysis technology, the flexible treatment of inner ring plate of the key parts of three ring gear reducer is carried out.Generate the required MNF files and use the Her-z contact theory to complete the calculation formula of the simulation parameters,such as the contact stiffness and damping of the inner meshing gear pair.In the virtual prototype software platform created three ring reducer flexible body virtual prototype model, simulation experiment is carried out, and the simulation results get the transmission ratio, power driven,meshing force and theoretical calculation values are checked. The correctness of virtual prototype is verified, and the dynamic performance of three ring gear reducer is evaluated synthetically.Complete 180 degree phase of three ring gear reducer, four ring reducer, five speed reducer3 D CAD model and flexible body virtual prototype construction work.In the simulation based on experimental data. Analysis of rotor arm bearing stiffness of Sanhuan deceleration effect for dynamic behavior of and different ring number and the phase of translation gear deceleration dynamics characteristic is, three ring reducer device structure optimization design to provide theoretical support.