Development of electric drive for crane lifting mechanisms
The mechanisms used in industrial enterprises, crane mechanisms are one of the most common. This overhead cranes, which are the main types of crane mechanisms. For the optimal choice of electric drive, the basic requirements were taken into account
Подобные документы
- 1. Analysis of schemes of a current limiting unit in automatic control systems for dc electric drives
The most suitable electric drive for these mechanisms is considered to be a direct current electric drive with thyristor automatic control. Frequency control of asynchronous electric drives finds less application due to the complexity of control.
статья, добавлен 14.02.2025 Use of fluid with magnetorheological effect in crane’s system can reduce significantly unwanted overload, vibrations and resonances arising from them. Applying periodically changing strengths of an external synchronized with cycles of periodical crane's.
статья, добавлен 28.11.2016Analysis of requirements for electric-drive of mechanism of pulsed wire feed, and the benefits of using a special Brushless Direct Current electric-drive. Design of half-bridge circuit to regulate the strength of the current phase of the stator windings.
статья, добавлен 22.12.2016The control station is designed for the control and smooth adjustment of the rotation frequency of the shaft of the alternating current electric motor depending on the operating characteristics of the technological equipment of the rod depth pump units.
статья, добавлен 10.12.2024Methods of optimization and control of asynchronous electric drives of pumping machine. Application of asynchronous electric drives in industry due to their efficiency, reliability and control flexibility. Vector speed control and pulse-width modulation.
статья, добавлен 10.12.2024The types of mechanisms turning and folding blades used for power control and stabilization of frequency of rotation of the wind turbines. The dependence of the displacements of sliders and centrifugal weights on the angle of rotation of the blade.
статья, добавлен 14.09.2016Types of Electric Vehicle in use Today. Alternative and Novel Energy Sources and Stores. Electric Machines and their Controllers. Motor Cooling, Efficiency and Mass. Design of Ancillary Systems. Battery powered cars and vans. Torque speed characteristics.
книга, добавлен 25.11.2013Development and active application of automation methods and tools that ensure the creation of Zois with specified high quality indicators with real restrictions on the use of development resources. Diagram of the "Get Function Listing" use case.
статья, добавлен 17.03.2022The service designed to facilitate the process of SCs, with demonstrating its elements in particular, database and knowledge base, arrangement of information for various users. In the authors’ opinion, such services will become a step towards no sphere.
статья, добавлен 13.10.2022The study investigates the kinematics of robots with the aim of expedient use of certain engineering solutions solving certain problems related to the accuracy of robot movement. The object of study is various types of robots and their kinematic systems.
статья, добавлен 20.07.2024Determination the rigidity of constructive elements involved into the rated diagram of electromechanical system of the drive of spherical mill. Defining the rigidity of the elements entering a kinematic circuit of any electromechanical systems of drives.
статья, добавлен 28.11.2016Comparative analysis of the effect of chemical compounds on the process of forming an electric arc and the conditions for its combustion.Metal transfer in the interelectrode gap under experimental conditions. Specific power of electric arc discharge.
статья, добавлен 29.09.2016Formulation of the problem of calculating the scalar potential of the electric field in the axisymmetric disk, the material which has anisotropic permittivity. The method of successive approximations, a description of the potential of the electric field.
статья, добавлен 30.08.2016Study of the main tasks of industrial enterprises. A number of key factors affecting production. Ways to ensure production of high-quality products necessary for society, ways to improve production indicators based on increasing production efficiency.
статья, добавлен 26.02.2023Improving the method of dynamic analysis of mechanical systems dynamic factors dynamic model which can be represented by three-mass system of row with the first driving mass with prestressing elastic drive connections. Finding the dynamic coefficients.
статья, добавлен 30.07.2016Requirements to design and placement of dairy enterprises. The basic stages of development, preconditions and signs of emergency situations in such enterprises are provided. Schedule of trouble-free stop shop production of condensed canned milk.
статья, добавлен 13.08.2016Evaluation of the effectiveness of electronic test during verification of the direction and power of electric switches connecting or disconnecting the circuit when certain conditions are met. The study of the performance of Electromechanical relays.
статья, добавлен 14.09.2016Types of the combined mechanisms of simultaneous turning and folding blades, which can be stabilized the frequency of rotation of horizontal-axis wind turbines. Analysis of the dependence of the adjusting movement of the slide from rotation angles.
статья, добавлен 27.10.2016The historical and formation stages of the Lviv school of glassmaking are approximated. The modernization of educational mechanisms are identified, ways of their solution are suggested and applied measures that will promote implementation are outlined.
статья, добавлен 16.02.2022Deployment of two-arm robots in different plants. Designing of an educational workplace for assembly, equipped with a two-arm robot. Using of Schunk electric grippers to adjust the range of movement and clamping force. Design a robotic workplace.
статья, добавлен 28.08.2020Общая характеристика линейки паровых турбин для парогазовых установок от предприятия General Electric Power Systems, предназначенных для работе на паре, получаемом в одном или нескольких котлах-утилизаторах за счет теплоты отработавших газов ГТУ.
статья, добавлен 28.05.2018Presents various methods of piling, using undercutting, as well as various combinations of these methods. The impact load on the pile head is created by special mechanisms. Driving piles by screwing is based on driving steel and reinforced concrete.
статья, добавлен 10.10.2024Geometry, FE analys, optimization, mechanisms, plastics and MSC/ARIES positioning for design detail. Full function ACIS based modeler, constraints, region operator to sub-divide geometry. Pre release solids shelling, per face (uniform) thickness control.
презентация, добавлен 21.02.2014Consideration and characteristics of the scheme double-point wheel-rail interaction. Familiarization with the erosive wearing. Definition of the dependence of the coefficient of adhesion on the temperature. Analysis of sand system of the locomotive.
статья, добавлен 26.09.2016Creep and fatigue in polymer matrix composites. Stages, characteristics and deformation of creep. Mechanisms of creep. General creep equation. Dislocation, nabarro-herring, coble creep. Creep of polymers, of concrete. The molecular weight of the polymer.
курсовая работа, добавлен 02.02.2015