механізм

Kinematics of the mechanism of shelf attachment of elevator shelving

The structural design of the mechanism of stabilization of horizontal position of the shelf of elevator shelving with a chain drive is proposed. The analytical dependencies for determination of the motion trajectory of supporting and guiding rollers of the shelf supporting mechanism are derived. The formulas for defining the horizontal and vertical displacement of the center of the arc of the trajectory of the guiding roller relative to the center of the driving star of the chain transmission during the shelf passing through the "characteristic" regions are presented.

Theoretical foundations for the development of experimental equipment for determining the load capacity of speed change devices

The article gives the theoretical base for construction of equipment for experimental research of static, kinematic and dynamic characteristics of devices for speed change by epicyclic gear trains with closed circuit hydrosystems through the ring gear during the transmission by them of the periodic, shock long-term or short-term loads or their executive mechanism stoppage due to overload.

Design of a short-time energy saving tank for light weight electric transport vehicles

The paper suggests the approach to the design of a short-time energy saving reservoir for light-weight electric transport vehicles. It is substantiated that the new product will be energysaving and will ensure gains in traction and braking force. CATIA was chosen as the most proper environment for the design as its libraries are the most suitable for machine-building.

Modelling of the Articulated Vehicle Dynamics Taking into Account the Elastically Fastened Freight

In this article, some methodological statements of the formation of mathematical models in the problems of machine dynamics are elucidated. The presence of a cushioned freight in the form of the fastened vehicle complicates the system, so that the equations describing its oscillations are too complicated and unsuitable for practical usage. It is shown that with all the complexity of the research object, it is expedient to form the mathematical model at the level of the design diagram (model) with a relatively small number of degrees of freedom.

Formation of Mechanism of Industrial Potential Development State Administration

The article reveals the substance of the category of “mechanism” and analyzes approaches to its formation as an element of the management system.  Conceptual principles of management mechanism of industrial potential development using subject-object approach are defined. There are identified the elements of the state administration mechanism based on micro- and macroeconomic “resource – result” models and on the receipt of the best possible result with the optimal combination of different functional blocks.

Modeling of dynamical regimes of two-motor electrical drives with due regard for elasticity and gaps of mechanical transducers

In the paper a mathematical model of two-motor electrical drive with one speed controller and two thyristor converters, by taking into account elasticity's and gaps of mechanical transducers, has been constructed. By using state-space methods, the transfer functions of the object have been determined. Some recommendations for tuning of the regulators have been suggested. Dynamical characteristics that are near to the optimal ones have been obtained by applying MATLAB.

Studying and forecasting of the phosphates pollution dynamics in watersheds and antropogenic water management landscape dynamics: application to the small carpathians rivers’ watersheds

The paper concerns the results of the quantitative study of dynamics for phosphates concentrations in the Small Carpathians rivers watersheds in Earthen Slovakia by using methods of nonlinear analysis and forecasting, chaos theory and dynamical systems. The conclusions can be viewed from the perspective of carrying out new algorithms for analysis and forecasting of the dynamics and evolution of anthropogenic water management landscape. Chaotic behaviour of the phosphates concentration time series in the watersheds of the Small Carpathians is studied.

Status and development trends of large, medium and small enterprises of real economy in ukraine: a comparative analysis of dynamics

In the article the structures of Ukrainian business entities are analyzed depending on their size (large, middle, small) and peculiarities of their activities are determined. It is shown that large enterprises ( concerns, corporations) are less flexible and dynamic than small and middle enterprises that instantly react to changes of the market situation. However, small and middle enterprises fall behind large enterprises in terms of absolute indexes, for example,  the cost of assets, sales volume, net income.

Electromagnetic monitoring of environmentally problematic objects in Precarpathians: results and technological means used

Purpose. Designing both the apparatus and methodical means based on the classical methods of electroprospecting and their modification. Using this set for an elecromagnetic monitoring of environmentally problematic objects. The objects to be observed are ground dams, haloes of underground water pollution, mine fields, geotechnical objects. Methodology. High-speed technological set was created and had been studying in the environmentally problematic areas in pre-Carpathians (Yavoriv, Stebnyk, Kalush etc.).