齿差减速卷扬机设计.docVIP

机械设计与制造毕业论文--一齿差减速卷扬机设计 Design of one tooth number difference Deceleration hoist Abstract My goal is to design a kind of the drum with a novel structureand the transmission will be installed in it The transmission use the structure of one tooth number difference planetary Within the ring gear and the reel is fixed togetherThere are two planetary gear the use of symmetrical arrangementto reduce the vibration due to the inertia forceOutput institutions take the type of pin and fixed with key and bearing it can not turn Axis rotation planetary gear with the gear mesh fixed output mechanism the planetary gear can only revolution can not autobiographical forcing the internal gear rotation to drive the reel rotation Because the annular gear and external gears number of tooth difference is very smallTherefore involute internal gear drive with small tooth difference often produces a variety of interferenceIn order to ensure the normal operation of the gear transmission it is designed to satisfy two main conditionsThe two main limiting condition is that it must guarantee does not have the tooth outline overlap interference and meshing rate smaller than 1The main design process includs the structure under the conditions of use and load conditions and a reasonable choiceAccording to the structure and strength requirements the appropriate choice of materials selection criteria modulus m calculate the major structural parametersWhile do the structural design strength calculation of the main parts The design of the difficulty lies in overlapping tooth profile interference checkingIn the design process we change several variable-bit coefficients and the addendum modification coefficient to meet the requirements Key Words transmission small tooth number difference outline overlap interference variable-bit coefficient 目 录 1 绪论 1 11卷扬机 1 12渐开线行星齿轮传动 1 com轮传动 1 com少齿差行星传动 1 13设计任务及简述 2 com求 2 com的技术性能 2 com容 2 2 卷扬机设计及参数的确定 3 21卷扬机工作级别的确定 3 22钢丝绳的选取 3 23滚筒几何尺寸的设计 3 24钢