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以往带式输送机进行动态分析均视机架为刚体,不考虑机架对带式输送机动态特性的影响,但带式输送机的机架大多都是桁架结构,具有一定的弹性,忽略机架会影响带式输送机动态分析的精度,甚至会使带式输送机动态分析结果应用价值不大。应用三维建模软件Pro/E和动态分析软件ADAMS,建立了带有机架的带式输送机虚拟样机模型,分析了机架的弹性、运行速度和输送带阻尼系数对带式输送机输送带动态特性的影响规律。结果表明:如果建立带式输送机模型时不考虑机架的影响,模拟出来的动张力值会比真实的带有机架的输送带动张力小,这样在带式输送机设计过程中,导致计算结果不可靠且偏于危险;稳定运行速度越大,输送带测试点处的动张力也就越大;适当提高输送带的阻尼系数,能有效增强带式输送机运行的稳定性与安全性。
In the past, the dynamic analysis of belt conveyors regarded the frame as rigid body and did not consider the influence of the frame on the dynamic characteristics of the belt conveyors. However, most of the belt conveyors are truss structures with some elasticity, Frame will affect the accuracy of belt conveyor dynamic analysis, and even belt conveyor dynamic analysis of the value of the application is not. Using the three-dimensional modeling software Pro / E and the dynamic analysis software ADAMS, a virtual prototype model of the belt conveyor with a rack is established. The effects of rack elasticity, running speed and belt damping coefficient on the belt conveyor belt Dynamic characteristics of the law. The results show that if the model of the belt conveyor is established without considering the influence of the frame, the dynamic tension value simulated will be lower than the real belt-driven belt tension, which will lead to the calculation during the design of the belt conveyor The result is unreliable and dangerous; the greater the steady running speed, the greater the dynamic tension at the test point of the conveyor belt; and the appropriate increase of the damping coefficient of the conveyor belt can effectively enhance the stability and safety of the belt conveyor operation.