无人直升机膜片弹簧离合器设计与接合仿真

Design and Engagement Simulation of Diaphragm Spring Clutch for Unmanned Helicopters

摘要: 设计一种无人直升机发动机用膜片弹簧离合器，并进行相关动力学特性分析，来验证膜片弹簧离合器在无人直升机中应用的可行性。根据某大型物流无人直升机的动力与负载需求，完成膜片弹簧离合器的结构参数设计与三维结构绘制，并将SOLIDWORKS中建立的离合器三维模型导入到ADAMS软件建立离合器虚拟样机，对该膜片弹簧离合器的接合过程的平顺性、冲击度、摩擦功等动力学特性进行仿真分析。结果表明，设计出的膜片弹簧离合器在无人直升机的发动机动力和旋翼负载情况下，0.15秒内即能完成接合过程，从动盘转速迅速与发动机同步，接合后期冲击度趋近于零。本研究的仿真思路与仿真结果，可为解决高转速工况下膜片离合器的“效率–平顺性”矛盾问题提供参考，也可为后续设计无人直升机膜片弹簧离合器相关设备提供数据支持。

Abstract: This study designs a diaphragm spring clutch for unmanned helicopter engines and conducts related dynamic characteristic analyses to verify the feasibility of using diaphragm spring clutches in unmanned helicopters. Based on the power and load requirements of a large logistics unmanned helicopter, the structural parameters of the diaphragm spring clutch were designed and a 3D model was created. The 3D clutch model clutch model in SOLIDWORKS was then imported into ADAMS to build a virtual prototype of the clutch. The dynamic characteristics of the diaphragm spring clutch engagement process, including smoothness, impact, and friction work, were analyzed through simulation. The results show that the designed diaphragm spring clutch can complete the engagement process within 0.15 seconds under the engine power and rotor load conditions of the unmanned helicopter, with the driven plate quickly synchronizing with the engine speed, and the impact level approaching zero at the later stage of engagement. The simulation methodology and results of this study provide a reference for addressing the “efficiency-smoothness” conflict of diaphragm clutches under high-speed conditions, and also provide data support for the subsequent design of diaphragm spring clutch equipment for unmanned helicopters.