输送带摩擦-磨耗试验机.doc

毕 业 设 计 题 目 输送带摩擦-磨耗试验机 的设计 专 业 班 级 学 生 学 号 指导教师 二〇一 年 月 日摘 要 本设计是根据国家标准设计的一种专门针对输送带的输送带摩擦-磨耗试验机。本试验机可以对输送带进行滚筒摩擦实验测试输送带的耐燃性，通过使输送带试样在装有热电偶传感器的滚筒上摩擦而判定输送带的难燃性，还可以对输送带进行表面橡胶磨耗试验测试其耐磨性，通过在相同的规定喷砂压力、高度、粒度、磨耗距离或时间等条件下测量标准橡胶与实验橡胶的体积磨耗损失之比，用百分数表示其耐磨指数。此试验机不仅采用了分度盘方式施加张紧力，同时还有测力传感器进行张紧力的测试。为了减小移动滑台的摩擦力采用直线轴承，而且张紧力机构中心与输送带张紧力在同一水平线。本试验机采取的是加压喷砂机喷砂冲击磨耗输送带的方式，用松散的粉状摩擦材料，这样可以合理的模拟沙粒或类似摩擦材料对橡胶在使用中的碰撞作用，更贴近其实际磨耗机理。 关键词：摩擦；磨耗；试验机；输送带 ABSTRACT The design is a belt friction-wear testing machine specifically for the conveyor,designed in accordance with national standards.This testing machine can test conveyor belt flame resistance by conveyor roller friction test, determine the flame resistance of conveyor belt conveyor specimen friction rollers equipped with a thermocouple sensor.It also can do the rubber wear test to test the wear resistance for the conveyor belt surface rubber. Comparison of test conveyor belt s volumetric wear loss with standard conveyor belts volumetric wear loss in the same test environment include blasting pressure, height, size, wear distance or time,wear index expressed as a percentage. This testing machine is not only a sub-dial to exert tension, as well as force sensors for tension test. In order to reduce the mobile sliding friction use the linear bearings, and the Institutional centers of tension and belt tension in the same horizontal line. The testing machine to take pressurized sandblast machine impact wear conveyor friction material, with loose powder, so it is reasonable to simulate sand or similar friction material, closer to the collision of rubber in use the actual wear mechanism. Key words：friction；wear；testing machine；conveyor belt I ABSTRACT II 1 前言 1 1.1 设计目的和意义 1 1.2 摩擦磨耗试验机种类 1 1.2.1输送带滚筒摩擦试验机类型 2 1.2.2输送带磨耗试验机类型 3 1.3 输送带摩擦磨耗试验机的发展趋势 3 2 总体方案设计 5 2.1 输送带摩擦-磨耗试验机总体设计目标 5 2.2 输送带摩擦-磨耗试验总体方案的设计 5 3 具体结构设计