Methodology for designing technological complexes. Part 3. Tool design

According to the developed methodology for the design of non-stationary technological complexes, the decomposition of the tool development unit (with a design version) for the pile processing of grooves for welding in the hull structures of an underwater vessel is performed. Keywords non-stationary technological complex, cutting, welding, mathematical model, design, cutting force, tool. [email protected], [email protected]

Energy Consumption for Acceleration of the Upper Parts of Plants in the Interval between the Belt of the Upper Conveyor and the Deck

Задачей любого технологического процесса является выполнение заданной работы с необходимым качеством и наименьшими затратами энергии. При уборке зерновых культур зерноуборочными комбайнами наибольшие затраты энергии связаны с выделением зёрен из колосьев. Это обусловлено необходимостью протаскивания соломы через молотильное устройство. Чтобы выделить зёрна из колосьев методом вытирания, необходимо срезать только верхние части растений. Оставшиеся стебли соломы следует измельчать и, в зависимости от технологии, либо рассеивать по полю, либо погружать в транспортные средства для использования в животноводстве. Существуют два варианта исполнения устройства для извлечения зёрен из колосьев: с декой, совершающей колебания, и с неподвижной декой. Извлечение зёрен из колосьев методом вытирания, когда дека неподвижна, является энергетически более целесообразным в сравнении с вариантом конструктивного исполнения комбайна, у которого дека совершает колебания. После попадания верхней части растения в промежуток между лентой верхнего транспортёра и декой происходит её линейное и угловое ускорение. Как на линейное, так и на угловое ускорение верхней части растения расходуется энергия. В результате расчётов определена энергия, необходимая для ускорения верхних частей растений, расположенных на деке, и потребляемая мощность. The task of any technological process is to perform the specified work with the required quality and the lowest energy consumption. When harvesting grain crops with combine harvesters, the greatest energy costs are associated with the extract of grains from ears. This is due to the need to pull straw through the threshing device. To extract grains from ears by grinding, it is necessary to cut only the upper parts of plants. The remaining straw stems should be ground and depending on the technology either scattered across the field or loaded in vehicles for use in animal husbandry. There are two versions of the device for extracting grains from ears: with a deck making vibrations, and with a fixed deck. The extraction of grains from the ears by the grinding method when the deck is stationary is energetically more expedient compared to the design version of the combine in which the deck oscillates. After the upper part of the plant enters the gap between the belt of the upper conveyor and the deck its linear and angular acceleration occurs. Both linear and angular acceleration of the upper part of the plant consumes energy. As a result of the calculations, the energy necessary to accelerate the upper parts of plants located on the deck and the power consumption were determined.

DEVELOPMENT OF A METHOD FOR SELECTING THE SHAPE OF THE LOAD CHARACTERISTIC THE ADAPTIVE FRICTION CLUTCH WITH A SEPARATE POWER CIRCUIT

The main provisions of the method for selecting the form of the load characteristic of the AFM with a separate power circuit are formulated. The method involves taking into account the nominal load, the total mass of the drive, the value of the gain of the adaptive friction clutch with a separate power circuit and the accuracy of its operation, as well as recommendations for the choice of the second design version of the clutch. The choice of the type of adaptive friction clutch, taking into account the load characteristics, is based on the different load capacity and accuracy of operation, which correspond to these forms.