Modeling of a modular elevator structure in the CAD system environment
Students Name: Kazybrid Mykhailo
Qualification Level: magister
Speciality: Computer Engineering in Mechanical Engineering
Institute: Institute of Mechanical Engineering and Transport
Mode of Study: full
Academic Year: 2023-2024 н.р.
Language of Defence: ukrainian
Abstract: Modern smart technologies and the Internet of Things allow operators, passengers, visitors and residents of the building to interact. For example, a resident of a house installs an application on his smartphone, one of the functions of which is to open the elevator doors at a certain time. To automate the technological line of transporting material, products between machines for submission to the next technological operation, lifting products in a vertical plane, it is impossible to do without special elevator equipment. Each technological line requires individual elevator design. Therefore, the development and production of new energy-efficient modular elevators with improved structural, energy and dynamic indicators, strength characteristics is an urgent task and is of scientific interest. The object of the research: load on the structure of the modular elevator console. The subject of research: console under static and dynamic load and stresses and deformations that occur in the console during product movement. The purpose of the research: development of the design of the elevator module for efficient movement of products in the form of a limited volume as part of a technological production line. In the first chapter, the concept was developed and options for the main parts of the elevator module were analyzed. The design features of the elevator module were considered, the material for the frame and components were selected. Guides for the cart are justified. The console drive is selected. Tasks have been set to realize the set goal of the master’s work. In the second section, we will consider several options for elevator modules, based on the options for the composition of their constituent elements. Constructive layout of the projected selected option was carried out. This is the rear-mounted version of the 8 console displacement drive system. An aluminum frame made of modular profiles is used. The load on the console, on which the product is placed and vertically moved, is calculated. The coefficient of static strength is 5 ,4. The calculated nominal life of the weakest part is also considered the nominal life of the evaluated model. The nominal mileage of the linear line is 22814 km. In the third chapter, a model was created in Autodesk Inventor and then simulated using the finite element method to check the strain and stress values. This is a fully welded bracket that supports and lifts the belt conveyor. The maximum weight of the box does not exceed 5 kg. The maximum deformation value, which is 2,249 mm, is located on the left side (from the rear of the console). This is mainly due to the location of the motor to drive the belt conveyor, which weighs 15 kg. The maximum displacement value of 2,249 mm is too high and it is necessary to modify the structure and increase its rigidity. The strength test was carried out according to the Von Mises hypothesis. The maximum peak stress values in the structure are 245,31 MPa. To reduce deformations and stresses, the console design was modified. The maximum value of the movement is already 1,418 mm and is also located on the left side (on the side of the console at the back). The maximum peak stress values in the structure are 152,03 MPa. For modeling, the material of the console structure was chosen - steel 35, suitable for welding by all common welding methods. The material is characterized by linearity, constancy, uniformity and has isotropic properties.In the fourth section of the work, an economic evaluation of the received design solution is carried out. The term of development and implementation of the project solution will last 89 days, and the costs of its development and implementation will amount to UAH 42656,26. This project solution will have a term of use of 5 years. Annual costs for the operation of the design solution will amount to UAH 43595,0. The project solution will have a consumption price for the developer organization of UAH 156,85. per day and for the buyer organization - UAH 158,73. per day during the entire period of use. The project solutions obtained in the work and corresponding studies indicate 9 their feasibility and practical use. Key words: modular elevator, elevator frame, console, CAD system, maximum stress, maximum deformation, finite element method.