ECONOMIC AND MATHEMATICAL MODEL OF CONTAINER BLOCK-TRAINS

The article is devoted to the study of the operation of the container terminal of the Tashkent-Commodity station during the turnover of the container block-train. An organizational and technological model of the container turnover in the form of a network graph is considered, and the technological capacity of the terminal is calculated by modeling operations with containers in the form of a step-by-step algorithm. The resulting methodology makes it possible to predict the duration of the turnover of a block-train and is a kind of imitation of the Uzbek railway network from the point of view of launching a container block-train.Keywords: cargo transportation, admission,delivery, loading, unloading, container, terminal, block-train, algorithm

Analysis of the Risk of Heat Generation due to Bolt Loosening in Terminal Block Connector Parts

In this study, the risk of heat generation due to normal and overload currents that vary with the abnormal loosening angle of wire-connecting bolts were identified. The risks were analyzed based on the thermal characteristics to minimize the carbonization accidents of terminal blocks inside distribution panels typically used in industrial sites. We applied a method for measuring the heating temperature and temperature variations in the terminal blocks in real-time by installing a resistance temperature detector sensor board in the terminal block. The experimental results showed that the terminal block model with a low-rated current exhibited a higher heating temperature, thus, confirming the need to select the terminal block capacity based on load currents. Additionally, the higher the rated current of the terminal block with a high-rated current and the higher the degree of loosening, the faster the carbonization point. Such heating temperature monitoring enabled real-time thermal temperature measurement and a step-by-step risk level setting through thermal analysis. The results of the measurement and analysis of carbonization risks can provide a theoretical basis for further research regarding the risk of fire due to carbonization. Furthermore, the deterioration measurement method using the temperature sensor board developed in this study is widely applicable to prevent fires caused by poor electrical contact as well as risk-level management.

Orts- und aufgabenflexibler Einsatz von Leichtbaurobotern in der Montage*/Flexible use of lightweight robots for varying assembly locations and tasks

Leichtbauroboter (LBR) bieten die Chance, die Montage effizienter zu gestalten. Allerdings ist der Wechsel von Montageaufgaben bei Robotersystemen insbesondere aufgrund des variantenbezogenen Programmieraufwandes sehr zeitintensiv. Der Beitrag beschreibt ein Konzept zum orts- und aufgabenflexiblen Einsatz von LBR, der durch ein AutomationML-basiertes Bewertungs- und Ansteuerungsprinzip den Aufgabenwechsel deutlich effizienter gestalten kann. Die Umsetzung des Konzepts erfolgt am Beispiel der Klemmenleistenmontage.   Lightweight robots (LWR) offer the opportunity to make assembly more efficient. However, it is very time-consuming to change assembly tasks for robot systems, mainly because of the programming effort for specific variants. The article describes a method for the flexible use of LWR in different locations and tasks, making the change much more efficient by AutomationML-based evaluation and control. The method is exemplified on terminal block assembly.

Implementation of PLC System in Fish Feeding Rate Determination

This study is about the development of a control system design using Programmable Logic Controller (PLC) system which gives food to the fish with a blower method. To perform fish feeding system automatically the control system will include PLC system, touch screen, emergency button, terminal block, speed controller, relay NY-2N, and power supply 240V. The component of the input systems are autonics sensor includes counter clockwise sensor, clockwise sensor and distance pulse sensor. While the components of the output systems are forward/reverse motor and blower. The overall system and its components are tested with the reliability test to check the components’ performance. The result of reliability system shows that all LED components emits light signal when both direct connection circuit and PLC system is interfaced. The feeding time need to be increased as the fish weight increased.Keywords: [PLC system, feeding rate, fish pond ]