VIBRATION PROTECTION SYSTEM WITH AN ELASTIC INTERFERENCE RING CONSTRUCTIVE SOLUTIONS AND THEIR TESTING

2020 ◽  
Vol 2 ◽  
pp. 114-120
Author(s):  
Е.Е. PROKOPOV ◽  
A.V. GORIN ◽  
A.V. PROSEKOVA ◽  
N.V. TOKMAKOV
Keyword(s):  
Experimental Studies ◽  
Protection System ◽  
Mechanical Oscillator ◽  
Constructive Solution ◽  
Vibration Protection ◽  
Interference Ring ◽  
Elastic Link

The article considers a vibration protection system with an elastic intermittent link. A constructive solution is presented in the form of a mechanical oscillator simulating the process of operation of the considered vibration protection system. The results of experimental studies of the operation of a mechanical oscillator are presented. Conclusions have been drawn on the prospects of using a vibration protection system with an intermittent elastic link.

Method of experimental evaluation of the efficiency coefficient of vibration protection of the rope-rod coupling "MAMSAR+A" of the diesel generator set DGA-8.83

2021 ◽  
pp. 88-95
Author(s):  
М.А. Минасян ◽  
А.М. Минасян ◽  
Ц. Цзэн
Keyword(s):  
Experimental Evaluation ◽  
Vibration Isolation ◽  
Experimental Studies ◽  
Original Method ◽  
Efficiency Coefficient ◽  
Diesel Generator ◽  
Vibration Protection ◽  
Rigid Connection ◽  
Two Stages

Объектом исследования является опытный образец запатентованной канатностержневой муфты (КСМ) «MAMSAR+А» в качестве привода дизель-генераторного агрегата ДГА-8,83 мощностью 9,56 кВт при частоте вращения 1500 мин-1 с дизелем 2Ч 8,5/11 и генератором «ГК-5,6». Целью исследования является экспериментальная оценка коэффициента эффективности вибрационной защиты КСМ. Поставленная цель достигается разработкой и реализацией оригинальной методики экспериментальной оценки коэффициента эффективности КСМ с анализом и выводами результатов экспериментальных исследований. Экспериментальные исследования проводятся в два этапа. Первый этап – с упругим соединением КСМ, второй этап – с жестким соединением. Оригинальность методики экспериментальной оценки коэффициента эффективности вибрационной защиты КСМ главным образом заключается в том, что между двумя этапами экспериментальных исследований КСМ не демонтируется. Следовательно, качество центровки не нарушается. Усредненный коэффициент эффективности виброизоляции КСМ составляет от 3 до 8 дБ. The object of this research is a prototype of the patented wire rope coupling (KSM) "MAMSAR+A" as a drive for a diesel-generator unit DGA-8.83 with a power of 9.56 kW at a speed of 1500 min-1 with a 2CH 8.5/11 diesel engine and a generator "KG-5.6". The aim of the research is to experimentally evaluate the efficiency coefficient of vibration protection of the KSM. This goal is achieved by developing and implementing an original method for experimental evaluation the efficiency coefficient of the KSM with analysis and conclusions of the results of experimental studies. Experimental studies are conducted in two stages. The first stage - with an elastic connection of the coupling, the second stage - with a rigid connection. The originality of the method of experimental evaluation of the efficiency coefficient of vibration protection of the KSM mainly lies in the fact that the KSM is not dismantled between the two stages of experimental research. Therefore, the quality of alignment is not violated. The average coefficient of vibration isolation efficiency of the KSM is from 3 to 8 dB.

Choosing Damping Parameters for the Inertial Orientation System

2021 ◽  
pp. 113-128
Author(s):  
V.P. Podchezertsev ◽  
S.V. Topilskaya
Keyword(s):  
Natural Frequency ◽  
Vibration Suppression ◽  
Outer Space ◽  
Protection System ◽  
Dynamic Vibration ◽  
Shock Absorbers ◽  
Vibration Protection ◽  
Orientation System ◽  
Vibration Impact ◽  
Vibration Dampers

The article discusses criteria for selecting the vibration protection for the spacecraft inertial orientation system. The considered vibration protection system allows providing acceptable amplitude acceleration for the gyroscopic device sensitive elements under vibration impact on the device body during the spacecraft launching and high angular stability of the position of the sensitive elements relative to the inertial coordinate system during a long period of operation (15 years) in orbit. The proposed vibration protection system consists of shock absorbers (springs) with stable high elastic characteristics under all factors of operation in the outer space and dynamic vibration dampers. The article presents a method for determining the parameters of dynamic vibration dampers taking into account the characteristics of the shock absorber, critical for the damping system of an inertial device. The proposed method for adjusting dynamic vibration dampers consists in suppressing vibrations at the natural frequency f1 of the shock absorption system and providing acceptable values of the gain coefficients of the structure resonant vibration amplitudes near the natural frequency f1. Certain characteristics of the damping system allow realizing the permissible vibration amplification coefficients at resonance, without significantly affecting the level of vibration suppression in the natural frequency zone of the vibration protection object

Choice of configuration and parameters of the vibration protection system for gyroscopic angular velocity meters

2021 ◽  
Author(s):  
Keyword(s):  
Angular Velocity ◽  
Protection System ◽  
Technical Solution ◽  
Vibration Damper ◽  
Dynamic Vibration ◽  
Shock Absorbers ◽  
Damping Characteristics ◽  
Vibration Protection ◽  
High Elasticity ◽  
Nonlinear Elastic

The rationale for the choice of a technical solution to the issue of vibration protection of gyroscopic angular velocity meters, built on the basis of dynamically tuned gyroscopes (DTG) is presented. The proposed vibration protection system consists of shock absorbers with high elasticity and dynamic vibration dampers (DVD) with nonlinear elastic and damping characteristics. The main factors that determine the peculiarities of choosing a vibration protection system for precision gyroscopic devices are indicated. Keywords dynamically tuned gyroscope (DTG); dynamic vibration damper (DVD); vibration protection system; gyroscopic angular velocity meter

Some results of an investigation of a vibration protection system with stiffness correction

1977 ◽  
Vol 13 (3) ◽  
pp. 338-341 ◽  
Author(s):  
P. M. Alabuzhev ◽  
A. A. Gritchin ◽  
P. T. Stepanov ◽  
V. F. Khon
Keyword(s):  
Protection System ◽  
Vibration Protection

scholarly journals Influence of speed of dispenser movement of directed impact on accuracy of seeding of main technical crops

2020 ◽  
Vol 11 (4) ◽  
pp. 41-47
Author(s):  
P. S. Popyk ◽  
Keyword(s):  
Technological Process ◽  
Agricultural Production ◽  
Experimental Studies ◽  
Resource Conservation ◽  
Design Solution ◽  
Innovative Design ◽  
Constructive Solution ◽  
Grain Flow ◽  
Single Grain

The article presents the results of field experimental studies to establish the effect of the speed of displacement of the metering element on the probability of the appearance of gaps and twins when sowing seeds with a pneumatic-mechanical seeding device equipped with directional cells. The object of the study is a seeding device with a directional metering unit, an innovative design solution of which will improve agricultural production based on resource conservation. As a result of the use of a new constructive solution of the dispenser, the increased accuracy of the technological process of forming a regular single-grain flow of seeds.

scholarly journals INNOVATIVE SOLUTIONS OF ADSORPTION CLEANING RECIRCULATING AIR FOR ELECTRIC TESTS OF ELECTRIC PRODUCT TESTS

2019 ◽  
Vol 22 (6) ◽  
pp. 103-110
Author(s):  
V. A. Minko ◽  
N. S. Kobelev ◽  
V. M. Kretova ◽  
V. N. Kobelev ◽  
V. Yu. Amelin ◽  
...  
Keyword(s):  
Russian Federation ◽  
Air Flow ◽  
Experimental Studies ◽  
Thermal Testing ◽  
Outlet Section ◽  
Resource Saving ◽  
Electronic Products ◽  
Constructive Solution ◽  
Heat Chamber ◽  
The Russian Federation

The purpose of the study of this work: to provide a scientific justification for the energy-saving device to maintain the normalized parameters of the recirculated air in special “clean” rooms, to derive formulas for calculating the adsorption material during the operation of the installation. The novelty of the constructive solution is protected and confirmed by patents of the Russian Federation for the invention. Methods. The volume of adsorbent determined by this method is placed in a tank with a recirculation loop, which includes: a cleaning unit nozzle, the inner surface of which is spring-loaded with a grid placed on the side of a moving air flow and a grid around the entire outlet section of the expanding nozzle. Spring-loaded mesh, placed on the side of a moving air flow, is made according to the profile of the velocity profile of the moving air flow, which is caused by the manifold speed impact on the adsorbent grains, horizontally arranged layers in order to level the absorbing capacity of silica gel KSM-5 throughout the drying device and use in the system recirculation of the air supplied by the fan leads to a probable entry of the vaporous mass of oil into the stream being cleaned, and the analysis of scientific and technical oh showed no literature data on the nature of such contaminants granular filter material, resulting in the need to study the penetration of the oil by volume adsorbent per cycle electrical testing of electronic devices in a heat chamber. Results. Based on the analysis of well-known foreign and domestic theoretical and experimental studies, there was no development related to vibration effects on the efficiency of adsorption drying of recirculated air for electrical thermal testing of electronic products. An adsorption unit has been developed with a horizontal arrangement of an adsorbing substance for treating air under conditions of vibration effects. Conclusion The installation developed by the authors passed laboratory and industrial tests at the Mayak plant of Kursk and was recommended for implementation as a resource-saving constructive solution protected by patents of the Russian Federation for invention. Keywords: special premises electrical testing of electronic products, recirculation circuit in the chamber for temperature testing - heat chamber, adsorption drying, transparent body of the drying device, oil contamination.

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