scholarly journals Vibration resistance of HST 90 hydrostatic transmission

2021 ◽  
Vol 1741 ◽  
pp. 012051
Author(s):  
M Ivanov ◽  
O Pereyaslavskyy ◽  
S Shargorodskiy ◽  
R Hrechko ◽  
V Mazurenko ◽  
...  
Author(s):  
Джугурян Т.Г. ◽  
Марчук В.І. ◽  
Марчук І. В.

During the design of operations of centerless intermittent grinding of surfaces there is a need to identify the natural frequencies of oscillations of the elements of the technological system of grinding. The method of calculation of rigidity, vibration resistance and forced oscillations of the elements of the circular grinding machine is offered in the article. Carrying out of experimental researches of rigidity of elastic system of the SASL 5AD grinding machine. We conducted preliminary experimental studies to measure the oscillations of various elements of the elastic system of the SASL 5AD grinding machine in the horizontal plane by piezoelectric sensors during grinding with continuous and discontinuous circles with different geometric parameters.


Author(s):  
С.А. Демидов

Рассматриваются возможности применения системы машин модульно-блочного типа в перспективных технологиях лесосечных работ, а также проблемы машинного парка лесозаготовительных предприятий России. Цель исследования - изучение структуры и особенностей эксплуатации системы лесных машин модульно блочного типа в современных условиях лесозаготовок с перспективой применения на ближайшее будущее. Для улучшения технологии проведения лесосечных работ и повышения экономической эффективности лесопромышленного комплекса предлагается провести ряд важных технических и технологических изменений. Одним из решений проблемы по улучшению эффективности работы является разработка и внедрение комплекса лесных машин, основанного на принципе эксплуатационной модульности. Это будет гарантировать технологическую гибкость производства, предоставит высокую производительность и обеспечит совместимость с окружающей средой. Приведен принцип устройства машин модульно-блочного типа с разделением функций между транспортными и технологическими модулями. Представлены графически классификация модулей по их назначению и концепция компоновки системы машин модульно-блочного типа, а также главный модуль (энергетический) и несколько технологических модулей, способных выполнять различные технологические операции в зависимости от условий и технологии производства. Как показал анализ рынка, наиболее перспективным направлением по улучшению механизации лесного парка машин является создание комплекса модульно-блочных машин на базе колесного трактора, оснащенных гидрообъемными передачами. Это делает конструкцию машины более гибкой и мобильной. Принцип формирования и работы модульной системы машин с многофункциональным технологическим оборудованием рассматривается в качестве перспективного направления по улучшению лесозаготовительного процесса. The article deals with the prospects for the use of machines modular block type in the advanced technology logging activities, as well as the machinery problems of logging enterprises in Russia. The research objective. The study of the structure and operating characteristics of a system of forest modular block type machines in current conditions with the prospect of their application in the nearest future. It is necessary that a number of important technical and technological changes should be made to improve the technology of logging operations and increase the economic efficiency of timber industry complex. One of the solutions to improve work efficiency is the development and introduction of forest machines based on the principle of operational modularity. It will ensure the flexibility of the production process, provide high work efficiency and, what counts, will be environmentally friendly. The article gives the description of the principle of the machine module block type, as well as the functions and how they are divided between the two modules. There are two pictures in the article. The first picture gives the classification of modules according to their application. The second picture shows the principle of arrangement of modular machine-block type. Both the main energetic module and some technological modules capable of performing processing steps depending on the conditions and production technology are presented. According to the market analysis that shows that the most promising direction to improve the mechanization of forest machinery is to create a complex modular block machines on the base of a wheeled tractor equipped with hydrostatic transmission. It will make the machine design more flexible and mobile. The principle of formation and operation of the modular system with multi-function machines process equipment is considered as a promising direction for improvement of the process of logging.


2016 ◽  
Vol 684 ◽  
pp. 111-119 ◽  
Author(s):  
Stanislav Rafaelevich Abulkhanov ◽  
Dmitrii Sergeevich Goryainov

Natural frequencies of the four upgraded front searchlight designs were received in ANSYS software environment. In the first case serial front searchlight incandescent electric lamp was replaced by a LED group which was mounted on the one-piece cylinder backing. The second front searchlight design had the backing which was upgraded by a radial ribs and concentric rigidity ferrules. Analyze of the backing deformation character by vibrations with the natural frequencies established a number of design solutions which make it possible to raise front searchlight vibration resistance. By the front searchlight model were established that the natural frequencies of the searchlight with the one-piece backing appertain to the whole range of the train vibrations. Natural frequencies of the backing with perforation, rigidity ferrules, and radial ribs appertain to the low frequencies of the railway locomotive vibrations spectrum. On basis of devised methodology of analyze of the deformation and natural frequencies of the surface carrying a LED group the vibration-proof searchlight design was introduced and researched.


2016 ◽  
Vol 693 ◽  
pp. 243-250
Author(s):  
Zhi Zhong Guo ◽  
Yun Shun Zhang ◽  
Shi Hao Liu

It is discovered that the vibration resistance of spindle systems needs to be improved based on the statics analysis, modal analysis and heating-force coupling analysis of spindle systems of CNC gantry machine tools. The design variables of optimization are set according to sensitivity analysis, multi-objective and dynamic optimization design is realized and its designing scheme is gained for spindle structure. The research results show that vibration resistance can be improved without change of the quality and static property of spindle systems of CNC gantry machine tools.


2020 ◽  
pp. 29-33
Author(s):  
S. V. Kondakov ◽  
O.O. Pavlovskaya ◽  
I.D. Ivanov ◽  
A.R. Ishbulatov

A method for controlling the curvilinear movement of a high-speed tracked vehicle in a skid without loss of stability is proposed. The mathematical model of the vehicle is refined. With the help of simulation modeling, a control algorithm is worked out when driving in a skid. The effectiveness of vehicle steering at high speed outside the skid is shown. Keywords: controlled skid, dynamic stability, steering pole displacement, hydrostatic transmission, automatic system, fuel supply. [email protected]


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