带式输送机主要用来输送块状、粒状和散状等物料，广泛应用于工业生产中。随着 大功率、长距离、高速率带式输送机的出现，传统的带式输送机已不能满足实际工程需 要，对大功率、长距离带式输送机的分析与设计提出更高的要求。所以研究带式输送机 的关键技术问题，对提高大功率、长距离带式输送机设计水平、确保其可靠运转具有重 要意义。 本文针对大功率、长距离带式输送机的研究现状，研究了四机驱动功率平衡问题， 在设计中实现了集中润滑、机身无螺栓快速联接。通过对多种张紧装置的分析比较，确 定了大功率、长距离带式输送机自动张紧装置的技术方案，并实现了自动张紧系统与卷 带装置的联动。用传统设计方法，对大功率、长距离带式输送机进行了设计，确定了带 式输送机的关键技术参数。针对大功率、长距离带式输送机负载重、带速高，输送机在 起动和停车过渡过程中，输送带中会产生很大的动张力，可能导致输送带的整体或局部 滑动，引起输送带传动面及驱动滚筒衬垫强烈磨损与发热，使输送带与滚筒间粘着系数 降低，甚至难于继续起动和运行问题，用动态设计方法，从分析弹性波在输送带中的传 播规律入手，计算了过渡过程的动载荷及构件的动力响应和输送机的起、制动时间。应 用有限元分析方法，对带式输送机滚筒进行了有限元分析，得到了筒毂间距和筒体壁厚 对滚筒力学参数的影响，为滚筒的设计提供了理论依据。对设计的大功率、长距离带式 输送机主要参数的现场测试结果表明：4 台电动机的功率基本平衡，带式输送机性能稳 定，达到了设计要求。

Belt conveyor is mainly used to transport the massive, granular and powder materials, widely applied in the industrial production. As high power, long distance and high speed belt conveyor, the traditional belt conveyor has been unable to meet the needs of practical engineering, the high power, long distance belt conveyor design and analysis put forward higher requirements. So the study of belt conveyor and the key technical problems, to improve the high power, long distance belt conveyor design level, ensure its reliable operation is of great significance. Aiming at high power and long distance belt conveyor research present situation, the 4 motor drive power balance problems, the centralized lubrication, and the quick frame connection without the bolt were studied. Based on the analysis and comparison of a variety of tensioning device, the automatic tensioning device technical solutions of a large power and long distance belt conveyor are identified, and the linkage the automatic tensioning system and belt winding device was realized. The large power and long distance belt conveyor was designed, the key technical parameters of belt conveyor was determined by the traditional design method. For the high power and long distance belt conveyor with heavy load and high speed, the conveyor belt will produce great dynamic tension in the startup and shutdown of the transition process, which may cause the whole or partial slip, cause the conveyor belt transmission and driving drum pad strong wear and heat, so that the conveyor belt and drum adhesion coefficient decreases, and even harder to continue to start and run. With the dynamic design method, from the analysis of elastic wave propagation law in conveyor belt, the dynamic response of components , the dynamic load of the transition process, and starting, braking time of the conveyor were calculated. The finite element analysis of drum is carried out by the finite element analysis method, the drum hub spacing and the cylinder wall thickness on the mechanical parameters were obtained, to provide a theoretical basis for the design of the drum. The field test results for the main parameter of the high power, long distance belt conveyor designed indicate that: 4 the power of the motor is balanced basically, the design requirements of belt conveyor with stable performance are met.