Design and analysis of a portable greenhouse weeding machine

With the development of modern agriculture, more and more greenhouse was used in agricultural production. According to the requirement of small-scale agricultural devices in greenhouse production, this paper putted forward a design idea of portable greenhouse weeding machine. Its structure and function were designed and analyzed. The weeding machine consists of five parts: the power part, the transmission part, the control part, the execution part and the shell part. The resistance analysis of different soil quality and humidity was carried out by statics analysis method. The mathematical model was established to calculate that the optimum weeding effect could be achieved when the cutting tool rotated at a speed of 200 r/min. Execution part of weeding machine was composed of roller and cutting tool, transmission part was made up of steel wire flexible shaft, couplings and bevel gear. The three-dimensional model of the weeding machine was established and a prototype was made. The static and modal analysis of the roller was carried out by using ANSYS. The results of simulation and prototype experiments showed that the structure of the device was simple and stable, with strong adaptability, high efficiency and no pollution, and the working effect meets the requirements, which provided a new way of thinking and method for the development of a lightweight weeding machine.