链式圆管刮板输送机设计及DEM仿真优化
发布时间：2018-11-09 11:37
【摘要】：随着畜牧业的发展,大型养殖场的养殖规模在扩大,若再采用传统的饲养方法,将需要大量的人力和物力,也增加了饲养过程中传染问题出现的几率,大型养殖场急需引进机械化输送设备用于颗粒饲料的输送。本文设计了一种新型的链式圆管刮板输送机专门用于输送颗粒饲料,在满足输送产量的情况下,尽可能地减少颗粒饲料的破碎,可以实现多点下料,设备的投入成本不高,可以满足中小型养殖场的需要。本课题展开了如下研究工作:(1)设计一台优良的刮板输送机,需要了解输送物料的特性,本文对颗粒饲料的物理参数进行了实验测量,得到了颗粒饲料的外观尺寸、容重和密度;对颗粒饲料的力学性能进行实验测量,得到了颗粒与颗粒、颗粒与钢板、颗粒与聚氨酯板之间的碰撞恢复系数、静摩擦系数和动摩擦系数,这些数据为输送机的模拟仿真和设计提供了重要参数。(2)通过EDEM软件模拟仿真出不同输送速度下颗粒饲料发生碰撞时总能量损失,在保证输送产量情况下,计算出了颗粒饲料在圆管内的有效截面积,对总能量损失和有效截面积进行加权平均运算,采用最小二乘法对数据进行拟合,运用MATLAB软件绘制了拟合曲线,得到了链式圆管刮板输送机的最优输送速度。(3)模拟仿真出最优输送速度后,对链式圆管刮板输送机的总体结构进行了设计,先对输送装置的结构进行了优化,再对刮板输送的驱动装置进行了设计计算和选型,包括对头轮、大小链轮和链条的设计计算,以及对电机和减速机的选型,最后对头轮轴进行了设计和校核。设计完成后,通过SolidWorks软件对主要零部件进行三维实体建模并进行了装配。机器设计在材料选择上更多考虑设备成本和寿命,机身采用6mm的无缝碳钢管,刮板采用聚氨酯材质可以提高设备的可靠性和寿命。
[Abstract]:With the development of animal husbandry, the scale of large-scale breeding farms is expanding. If the traditional breeding methods are adopted again, it will require a lot of manpower and material resources, and it will also increase the probability of infection problems in the feeding process. Large-scale farms urgently need to introduce mechanized transport equipment for the transport of pellet feed. In this paper, a new type of chain tube scraper conveyor is designed for conveying pellet feed. Under the condition of satisfying the transportation output, the crushing of pellet feed can be reduced as far as possible, and the multi-point feeding can be realized, and the input cost of the equipment is not high. Can meet the needs of small and medium farms. The research work is as follows: (1) to design an excellent scraper conveyer, it is necessary to understand the characteristics of the conveying material. In this paper, the physical parameters of the pellet feed are measured experimentally, and the appearance size of the granular feed is obtained. Bulk density and density; The impact recovery coefficient, static friction coefficient and dynamic friction coefficient between particle and particle, between particle and steel plate, between particle and polyurethane plate, between particle and grain, between particle and steel plate, between particle and polyurethane plate were measured experimentally. These data provide important parameters for the simulation and design of conveyors. (2) the total energy loss of particle feed under different conveying speeds is simulated by EDEM software, and the transportation output is guaranteed. The effective cross section area of pellet feed in the pipe was calculated, the total energy loss and the effective cross section area were calculated by weighted average operation, the data were fitted by the least square method, and the fitting curve was drawn by MATLAB software. The optimal conveying speed of the chain tube scraper conveyor is obtained. (3) after simulating the optimal conveying speed, the overall structure of the chain circular tube scraper conveyor is designed, and the structure of the conveying device is optimized. The driving device of scraper conveying is designed and calculated, including the design and calculation of the head wheel, the size chain wheel and the chain, as well as the selection of the motor and the reducer. Finally, the head axle is designed and checked. After the design is finished, the main parts are modeled and assembled by SolidWorks software. The machine design considers the equipment cost and life more in the material selection, the fuselage adopts the 6mm seamless carbon steel pipe, the scraper adopts the polyurethane material to enhance the equipment reliability and the service life.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD528.3
本文编号：2320300
[Abstract]:With the development of animal husbandry, the scale of large-scale breeding farms is expanding. If the traditional breeding methods are adopted again, it will require a lot of manpower and material resources, and it will also increase the probability of infection problems in the feeding process. Large-scale farms urgently need to introduce mechanized transport equipment for the transport of pellet feed. In this paper, a new type of chain tube scraper conveyor is designed for conveying pellet feed. Under the condition of satisfying the transportation output, the crushing of pellet feed can be reduced as far as possible, and the multi-point feeding can be realized, and the input cost of the equipment is not high. Can meet the needs of small and medium farms. The research work is as follows: (1) to design an excellent scraper conveyer, it is necessary to understand the characteristics of the conveying material. In this paper, the physical parameters of the pellet feed are measured experimentally, and the appearance size of the granular feed is obtained. Bulk density and density; The impact recovery coefficient, static friction coefficient and dynamic friction coefficient between particle and particle, between particle and steel plate, between particle and polyurethane plate, between particle and grain, between particle and steel plate, between particle and polyurethane plate were measured experimentally. These data provide important parameters for the simulation and design of conveyors. (2) the total energy loss of particle feed under different conveying speeds is simulated by EDEM software, and the transportation output is guaranteed. The effective cross section area of pellet feed in the pipe was calculated, the total energy loss and the effective cross section area were calculated by weighted average operation, the data were fitted by the least square method, and the fitting curve was drawn by MATLAB software. The optimal conveying speed of the chain tube scraper conveyor is obtained. (3) after simulating the optimal conveying speed, the overall structure of the chain circular tube scraper conveyor is designed, and the structure of the conveying device is optimized. The driving device of scraper conveying is designed and calculated, including the design and calculation of the head wheel, the size chain wheel and the chain, as well as the selection of the motor and the reducer. Finally, the head axle is designed and checked. After the design is finished, the main parts are modeled and assembled by SolidWorks software. The machine design considers the equipment cost and life more in the material selection, the fuselage adopts the 6mm seamless carbon steel pipe, the scraper adopts the polyurethane material to enhance the equipment reliability and the service life.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD528.3
【参考文献】
相关博士学位论文 前1条
1 胡励;机械产品设计中的颗粒离散元仿真技术及实现[D];武汉大学;2013年
，本文编号：2320300
本文链接：https://www.wllwen.com/kejilunwen/kuangye/2320300.html
