Decrease of dynamic loads in mobile energy means

Polivaev, Oleg I.; Gorban, L K; Vorohobin, A V; Vedrinsky, Oleg S.

doi:10.1088/1757-899x/327/4/042083

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…In order to effectively reduce dynamic loads, the power transmission of the tractors of a small traction class (1.4 kN) is supplied with elastic damping elements. In the work [12], in order to reduce fluctuations in the 'engine-power drive' system, there were used special fluctuation dampers, installed close to the wheeled running gear (in the tractor wheels). The researchers installed an elastic damping element in the final element of the tractor transmission.…”

Section: B Research On the Stabilization Of Power Transmission Operating Modesmentioning

confidence: 99%

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Elastic Damping Mechanism Optimization by Indefinite Lagrange Multipliers

et al. 2021

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The current paper has presented the study on theoretical dependences of the optimization parameter (the degree of transmission transparency) on the design factors of elastic-damping mechanism (EDM) in the transmission for tractors of small traction class (14 kN). The purpose of the study was to obtain a unified functional relationship that integrates early study results. The determination of a unified function was based on reaching a compromise by the method of indefinite Lagrange multipliers. With the help of the function, there have been obtained the dependences of the effect of EDM design factors on transmission processes when performing the main agricultural operations. Using a method based on finding a compromise solution (method of indefinite Lagrange multipliers), there have been substantiated design parameters of the elastic-damping mechanism in the tractor transmission and there has been identified an optimization parameter of the Lagrange function. For a better understanding of the obtained dependence, there has been carried out a three-dimensional visual analysis. Each factor used in the Lagrange function was a physical parameter of an elastic-damping mechanism. The resulting equation has given an opportunity to control mechanism parameters in natural operating conditions. The obtained Lagrange value has demonstrated that the mechanism absorbs 32% of fluctuations in the external traction load of a tractor, when working with the main agricultural tools.

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Section: B Research On the Stabilization Of Power Transmission Operating Modesmentioning

confidence: 99%

“…Oil pump (5) is connected to suction (9) and pressure (10) mains. The planetary gear (1) by carrier shaft (11) is connected to gearbox (12) and is driven from engine (14). Two-stage adjustable throttle (15) is installed in pressure main (10).…”

Section: Figure 1 Kinematic Diagram Of Elastic-damping Mechanismmentioning

confidence: 99%

Elastic Damping Mechanism Optimization by Indefinite Lagrange Multipliers

et al. 2021

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Creation of new polymer composite bioplastics to produce disposable tableware based on starch

Pavlovskay

Gorkova

Gagarina

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

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The article discusses the creation of new polymer-starch compositions based on starch extracted from nongraded wheat grains, hydrolyzed sugar beet pulp and polyethylene glycol. The main points of agricultural waste disposal are discussed with the aim of obtaining products with new properties, safe for the environment and biodegradable. Prototypes have a uniform distribution of particles in the matrix, provide enough tensile strength and elongation under tension. A study on the selection of the mass ratio of the components revealed the optimal concentration of the components. The temperature of exposure to the composition to obtain biodegradable material is 105 ° C. It was shown that the tensile strength of samples of the polymer composition decreases with an increase in the rotational speed of the screw to 150 min-1 and a temperature above 1300C. Speed below 110 min-1 lead to an increase in strength. The obtained experimental material opens prospects for further research with respect to improving the properties of these biocomposites based on starch and sugar beet pulp by modifying starch and searching for compositions with starch, using reinforcements (both organic and inorganic) and processing conditions.

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Results of experimental studies of a tractor equipped with an elastic-damping mechanism when aggregated with a seeder

Senkevich

Ilchenko

Alekseyev

2021

Traktory i sel hozmashiny

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One of the significant factors influencing the operation of the tractor is the unsteady load that occurs when starting off, during the initial period of acceleration and deceleration. The elastic-damping mechanisms are used to reduce the negative consequences of such loads. Scientists still develop and study their application. In this article, the analysis of the cross correlation function and the analysis of the mutual spectral density of two processes were carried out. The analyzed process-es were the engine crankshaft speed and the drive wheel speed. This analysis shows the change in the speed of the passing load frequencies along the shaft line of the traction class 1.4 wheeled trac-tor power transmission, where an elastic-damping mechanism is installed. The studies were carried out for the operating conditions of a tractor with a seeder. The purpose of the study was to deter-mine the effect of the elastic-damping mechanism installed in the power transmission of a tractor on its operation with a trailed seeder. In the general case, the object of research is the functioning of a tractor of traction class 1.4 process, which is located in a unit with a seeder. Analysis of the mutual correlation function of the two processes showed a change in the speed of the passing load frequen-cies along the shaft line. The ratio of the propagation time of the disturbance signal in the experi-mental tractor in relation to the production version along the shaft line when aggregating the tractor with the seeder decreases by 40.1%. The analysis of the mutual spectral density shows a shift in the frequency of disturbing influences in relation to the serial version and a decrease in their value when the tractor is aggregated with a seeder by 33.3%. The value of the mutual spectral density is lower in the experimental version of the tractor, which may mean that the elastic-damping mechanism, as an element of the power transmission, absorbs part of the load fluctuations and reduces their propagation speed along the shaft line.

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Decrease of dynamic loads in mobile energy means

Cited by 5 publications

References 3 publications

Elastic Damping Mechanism Optimization by Indefinite Lagrange Multipliers

Elastic Damping Mechanism Optimization by Indefinite Lagrange Multipliers

Creation of new polymer composite bioplastics to produce disposable tableware based on starch

Results of experimental studies of a tractor equipped with an elastic-damping mechanism when aggregated with a seeder

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