平面转弯带式输送机设计计算理论研究

发布时间：2018-12-21 14:46

【摘要】：带式输送机作为最重要的散状物料输送设备,广泛地使用在电力、冶金、矿山、煤炭、港口等领域。由于受到运输任务、地形以及地质等因素的限制,输送线路不能全部沿直线铺设,因而出现了转弯带式输送机。在运行过程中,输送带通常不能处于理想的对中位置,而是有一定的偏移量,当偏移量过大时有可能造成撒料及输送带的磨损。对输送带的偏移量进行理论计算可以验证设计是否合理,具有一定的工程意义。以5辊子托辊组平面转弯带式输送机为研究对象,对转弯段物料和输送带的偏移量的理论计算方法进行研究。通过分析转弯段物料截面,推导出重力分配系数的计算方法；通过分析转弯段物料和输送带的受力,得到含有偏移量的力平衡方程,进而得到偏移量的计算方法。通过改变托辊组的参数,5辊子托辊组可以转变为4辊子托辊组、3辊子托辊组以及2辊子托辊组,本文的计算理论同样适用于少于5节辊子的托辊组转弯带式输送机。通过对平面转弯进行实例分析,得到各参数对偏移量的影响；对定坡转弯进行实例分析,与平面转弯实例进行对比,得到除坡度外的各参数对平面转弯和定坡转弯的偏移量的影响作用是一致的；当定坡转弯除坡度外的各参数与平面转弯相同时,定坡转弯与平面转弯偏移量的差值最大不超过定坡转弯偏移量的10%,该差值比较小,并且在相同参数下,平面转弯的偏移量大于定坡转弯,所以当槽角较大时,可以通过计算平面转弯的输送带偏移量估算定坡转弯的偏移量,简化计算。将MATLAB与Visual Basic相结合混合编程开发转弯带式输送机设计计算软件,用其计算转弯带式输送机物料和输送带的偏移量,并将计算结果以Word文档形式输出,方便设计者对数据进行后期处理。设计计算软件能够使设计者摆脱大量的计算,缩减工作量,提高工作效率,缩短设计周期。
[Abstract]:As the most important equipment for conveying bulk materials, belt conveyor is widely used in power, metallurgy, mining, coal, port and other fields. Due to the limitation of transportation task, terrain and geology, the transmission line can not be laid all along the straight line, so the turning belt conveyor appears. In the process of operation, the conveyor belt is usually not in the ideal center position, but there is a certain amount of deviation, when the deviation is too large, it may cause material and belt wear. The theoretical calculation of the deviation of conveyor belt can verify whether the design is reasonable or not, and has certain engineering significance. The theoretical calculation method of the deviation of the material and conveyor belt in the turning section is studied by taking the planar turning belt conveyor of the 5 roller group as the research object. The calculation method of gravity distribution coefficient is deduced by analyzing the section of material in turn section, and the force balance equation with offset is obtained by analyzing the force of material and conveyor belt in turn section, and then the calculation method of deviation is obtained. By changing the parameters of the roller group, the 5-roller group can be transformed into 4-roller group, 3-roller group and 2-roller group. The calculation theory in this paper is also applicable to the belt conveyor with less than 5 rollers. Through the analysis of plane turning, the influence of each parameter on the offset is obtained. Through the analysis of the fixed slope turn and the comparison with the plane turning example, it is found that the effect of the parameters except the slope degree on the deviation of the plane turn and the fixed slope turn is consistent. When the parameters of a fixed slope turn other than a slope turn are the same as a plane turn, the maximum deviation between a fixed slope turn and a plane turn does not exceed 10 points of the fixed slope turn offset, which is relatively small, and under the same parameters, The deviation of plane turn is larger than that of fixed slope turn, so when the slot angle is large, the deviation of fixed slope turn can be estimated by calculating the offset of conveyor belt of plane turn, and the calculation can be simplified. Combined with MATLAB and Visual Basic, the design and calculation software of turning belt conveyor is developed. The deviation of the material and belt of the belt is calculated, and the result is output in the form of Word document. It is convenient for the designer to process the data. The design calculation software can make the designer get rid of a lot of calculation, reduce the workload, improve the work efficiency and shorten the design period.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH222

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