Vol 76, No 9 (2009)
- Year: 2009
- Articles: 21
- URL: https://journals.eco-vector.com/0321-4443/issue/view/3773
Articles
Agricultural technology park - the base of machine-and-technological modernization of regional agroindustrial complexes
Abstract
Приведены краткое аналитическое описание экономической динамики и подготовленные учеными базовые научно-практические материалы к разработке агротехнопарков. Представлены структура конкретного регионального агротехнопарка и схема взаимодействия его блоков.
Tractors and Agricultural Machinery. 2009;76(9):3-12
3-12
Automation of control of removing oils from three-product hydraulic cyclone
Abstract
The necessity of research of possibility of a three-product hydrocyclone application for the clearing of cleaning solutions is grounded. Its work automation method and research laboratory plant are described. The possibility of use of the electric pickup for hydrocyclone work automation is proved experimentally. The interelectrode space resistance change dependances on temperature, cleaning liquid and oils density in solution, electrode area and clearance in it are given. The pickup electrodes' parameters are grounded.
Tractors and Agricultural Machinery. 2009;76(9):13-15
13-15
15-16
Parameters and regimes of operation of digging-and-separating member
Abstract
The theoretical grounding of constructive and regime parameters of digging up and separating device is given. The scheme and technological process of work of digging up and separating device are represented. The rod of rotor's and beater's trajectory of movement, force ensuring the picking of bulb leafs, and geometrical parameters of digging up and separating device are grounded.
Tractors and Agricultural Machinery. 2009;76(9):17-19
17-19
Versatile electromechanical drive of segment-and-finger mower
Abstract
Рассмотрена возможность расширения применения сегментно-пальцевых косилок и повышения эффективности их работы за счет перехода на электромеханический привод и замены кривошипно-ползунного механизма плоским кулачковым. Для контроля и оценки энергетических параметров с.-х. агрегата для скашивания трав с электромеханической трансмиссией разработан новый алгоритм.
Tractors and Agricultural Machinery. 2009;76(9):19-23
19-23
Effectiveness of the use of small-sized device for grain squashing
Abstract
Design data and operating modes of the small-sized experimental plant working on a principle of squeezing and squashing various crops' grain are analyzed and proved. By means of experimental investigation, quality of crushing and rational operating mode of the device are estimated. Economic expediency of application of the device in small farm enterprises is determined.
Tractors and Agricultural Machinery. 2009;76(9):23-24
23-24
25-27
Comparative assessment of economy of tractor with hydrodynamical transmission by different laws of high-pressure fuel pump control
Abstract
Приведены результаты сравнения топливной экономичности с.-х. трактора с гидродинамической силовой передачей и дизелем, топливная аппаратура которого реализует двухрежимный, всережимный и гиперболический законы регулирования на частичных мощностных режимах. Результаты получены на основании математического моделирования и охватывают все варианты эксплуатации трактора: работа с тяговыми нагрузками, работа с отбором мощности через ВОМ и др. Сделаны выводы о преимуществе, с точки зрения экономичности при работе на частичных режимах, двухрежимного и гиперболического законов регулирования ТНВД дизеля.
Tractors and Agricultural Machinery. 2009;76(9):27-30
27-30
Control of mechanical stepless transmission
Abstract
The principle of additional regulation of the multithread mechanical stepless transmission of impulse type is considered due to change of size of radius of a crank depending on external loading at work together with the diesel engine equipped with centrifugal governor. The circuit of system of automatic control of the transmission is offered providing work of the engine under the characteristic of the minimal charge of fuel at incomplete use of capacity in a wide range of revolutions of crankshaft.
Tractors and Agricultural Machinery. 2009;76(9):30-32
30-32
Some statistic indices of functioning of sowing unit with elastic-damping mechanism in tractor transmission
Abstract
The experimental research results obtained by operating the sowing machine-and-tractor unit equipped with elastic-damping mechanism which changes transmission properties, makes it compliant and, therefore, absorbing vibrations of the external disturbing influences, are dealt with in this article. Several performances of a unit with more rigid transmission are given as a comparison. The given correlation functions and spectral densities of the process show an evident improvement of operating characteristics.
Tractors and Agricultural Machinery. 2009;76(9):32-34
32-34
35-37
Calculation of the average total operating time for the group of technical equipment with spare components
Abstract
The functioning of the group of technical equipment is examined, the duration of its no-failure operation is determined by one of its components, and long-term performance is ensured by replacing the failed component by the spare one. Relations are obtained for calculating the average total operating time of the group of technical equipment with spare components by their work during the random allotted time, with and without taking into account the time of replacing the failed component.
Tractors and Agricultural Machinery. 2009;76(9):37-39
37-39
40-41
Power parameters of rolling wheel in the driving mode
Abstract
Приведены результаты численного моделирования нагрузки на колесо и сцепных (фрикционных) свойств опорной поверхности и шины. Полученные аналитические зависимости нашли подтверждение в результате проведенных в стендовых условиях экспериментальных исследований.
Tractors and Agricultural Machinery. 2009;76(9):41-44
41-44
44-45
Wear of friction pairs of internal combustion engine for machine-and-tractor unit on the base of K-744P tractor in the transport regime
Abstract
Разработана математическая модель изнашивания пар трения ДВС, позволяющая вычислять амплитудно-частотные характеристики реакции подвеса МТА в транспортном режиме с плугом и частотные характеристики скорости изнашивания двигателя. Установлены пути снижения динамической нагруженности трактора не менее чем на 21,4% и скорости изнашивания пар трения по спектру частот и интегрально более чем на 35%.
Tractors and Agricultural Machinery. 2009;76(9):46-50
46-50
An assessment of load distribution by means of metal coats
Abstract
It is proposed to estimate the machine-and-tractor unit's load distribution through the control of state of metal coat used as a sensor. The possibility of applying the existing method to solve this problem is examined. The computer modeling results are shown.
Tractors and Agricultural Machinery. 2009;76(9):50-52
50-52
Motor vehicles' diagnosis operability and effectiveness of their use
Abstract
Обоснованы основные положения диагностирования ходовой части и подвески малотоннажного грузового автотранспорта. Разработано оборудование для диагностирования подвески автомобилей методом регистрации и анализа затухающих колебаний.
Tractors and Agricultural Machinery. 2009;76(9):52-54
52-54
Improving eccentric drilling-and-milling chuck by indices of tool clamping force
Abstract
The eccentric tool tightening chuck with two cinematic circuits «wedge-eccentric cam» and an intensifying link was offered. Two stages of work of the eccentric boring-and-milling chuck (EBMC), which provide the creation of necessary force for tool clamping, were shown. Adduced were the calculation and function-structural diagrams and conditions for definition of reinforcement coefficients of EBMC due two cinematic circuits in order to receive the necessary radial tool clamping force from one eccentric.
Tractors and Agricultural Machinery. 2009;76(9):54-56
54-56
60th anniversary of V.A. Likhanov
Tractors and Agricultural Machinery. 2009;76(9):24-
24-
56-
СМИ зарегистрировано Федеральной службой по надзору в сфере связи, информационных технологий и массовых коммуникаций (Роскомнадзор).Регистрационный номер и дата принятия решения о регистрации СМИ: ПИ № ФС 77 - 81900 выдано 05.10.2021.