Design and Simulation of Cement Mixer’s Two Stage Planetary Reducer
|School||Wuhan University of Science and Technology|
|Course||Mechanical Manufacturing and Automation|
|Keywords||Cement mixer Secondary planetary reducer Contact force of the collision ADAMS Contact Finite ElementAnalysis|
In recent years, as the development of rapid economic, infrastructure construction and realestate industry continues to heat up, the demand for concrete machinery is increasing. Thereducer which as a core component is a very important part that connected to concrete mixingplant and concrete pump. The gearbox which is used on cement mixer requires with compactstructure, small size, transmission power, and the dynamic nature of the products, strength andstiffness requires high accuracy and so on. Involute planetary gear transmission with thecharacteristics of a power split and the motion of moving axes, and also there are moreadvantages which using of internal gear rationally: little size, light weight, compact construction,large carrying capacity, high transmission efficiency, large speed ratio, smooth motion, shock andvibration ability and so on. Thus, in aircraft engines, lifting transport, petrochemical andweapons areas the planetary gear drive has been used more and more widely. In this paper, twostage lanetary reducer of the cement concrete mixed is studied, its main contents and relevantachievements are as follows:(1) According to the design request of the secondary planetary gear in the cement mixertruck, it selected the type of planetary transmission, theoretically calculated and designed thebasic parameters of the planetary reducer.(2) Using Pro / E three dimensional modeling and virtual assembly technology, thesecondary planetary gear was modeled which based on the parameters designed, and conducted avirtual assembly, thereby establishing the three dimensional solid assembly model for thesecondary planetary gear that on the cement mixer.(3) Based on Virtual Prototyping, ADAMS simulation software and the elastic contacttheory, it established virtual prototype model that is of the secondary planetary gear, anddynamic simulation of meshing force, the results is consistent with the theoretical calculation,meeting with design requirements.(4) Based on contact analysis and the basic processes, and used PATRAN software’s contactanalysis module, contact analysis was carried out in the sun gear and planetary gear that is ofplanetary gear set. The results show that the planetary gear and sun gear of the strength andstiffness to meet the design requirements.