Substantiation of the parameters of vibration systems in the cab of the gantry crane at the workplace of crane operators

Kobzev, K.O.; Shamshura, Sergey A.; Chukarin, Alexander; Bur'yanov, A. I; Kasyanov, Valeriy E.

doi:10.1051/matecconf/201822601023

Cited by 29 publications

(16 citation statements)

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“…The applicability of the given dependences for practical noise calculations at the design stage is quite limited. First of all, it should be noted that expression (3) describes the motion of a system with a concentrated mass, which makes it possible to determine the vibrational velocities of the mechanism at the natural vibration frequency, that is, it is applicable to the tonal spectrum of vibrations and noise [2,4,6,8].…”

Section: Resultsmentioning

confidence: 99%

Theoretical studies on the calculation of the noise of impact equipment in blacksmith shops

et al. 2020

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Most types of forging equipment relate to impact machines, during the operation of which impulse noise occurs, the levels of which at workplaces, in most cases, exceed the maximum permissible values and relate to those factors, the significance of which in some cases is greater than dustiness, high temperature, manipulation of heated workpieces. Therefore, the problem of reducing vibration and noise in the forge shops is extremely relevant and has great scientific and socio-economic significance. To solve the problem of noise reduction in forge shops, various options for reducing the noise activity of equipment have been developed/ It is possible to most effectively reduce noise by changing the material and shapes of the beds, noise-attenuating casings, oil baths for gears.

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Section: Resultsmentioning

confidence: 99%

Theoretical studies on the calculation of the noise of impact equipment in blacksmith shops

et al. 2020

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“…Beds and gears are recommended to be cast from cast iron with spheroidal graphite, since their noise is less than that of welded beds and gears with equal mass. Replacing spur gears with helical gears or chevron gears reduces drive noise when idling by 8 dBA [2,4,6].…”

Section: Methodsmentioning

confidence: 99%

Soundproofing presses by placing its nodes in a soundproof casing, including drive components

2020

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Noise is one of the most unfavorable environmental factors in production facilities, for which it is most difficult to achieve compliance with sanitary standards. Prolonged exposure to intense vibrations and noise leads to noise and vibration diseases. The effect of noise on the human body is not limited to exposure to the organ of hearing. Irritation by noise is transmitted to the central and autonomic nervous systems, through them acts on the internal organs, leading to significant changes in the functional state of the organism. With pulsed and irregular noise, the degree of impact of noise on the body of workers increases. Most types of forging equipment relate to impact machines, during the operation of which impulse noise occurs, the levels of which at workplaces, in most cases, exceed the maximum permissible values and relate to those factors, the significance of which in some cases is greater than dustiness, high temperature, manipulation of heated workpieces. Therefore, the problem of reducing vibration and noise in the forge shops is extremely relevant and has great scientific and socio-economic significance. To solve the problem of noise reduction in forge shops, various options for reducing the noise activity of equipment have been developed/ It is possible to most effectively reduce noise by changing the material and shapes of the beds, noise-attenuating casings, oil baths for gears.

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“…The possibility of equality of the friction force values at the boundaries of the specified interval in the presence of a maximum and achieving their greatest stability under these conditions is also revealed. The results show a high stability of the friction force during slippage of bodies, although at large values of the pressure angle of the sensitive elements of the sensor-transducer, the maximum friction force can be briefly proportional to the current value of the friction coefficient [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The process of increasing the stable operation of the working body in crank presses

2020

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The article considers the study of the synthesized concept of frictional contact of solids in crank presses. As a result of the analysis the possibility of obtaining the maximum load characteristic of the friction contact within the interval of variation of the friction coefficient has been established. The possibility of equality of the values of the friction force of the friction contact at the boundaries of the indicated interval in the presence of a maximum and the achievement of their greatest stability under these conditions is also revealed. As result the upgraded concept of frictional contact allows theoretically to obtain a very high stability of the friction force, however, due to the relatively large value of the angle and force parameter, it is used inefficiently. A necessary condition for the absence of zero reversal of the output parameter of the main friction group of the friction contact in the interval of variation of the friction coefficient and the presence of the maximum function of the load capacity of the friction contact is the transfer of its full load by the sensitive elements of the additional friction group. An additional condition for the existence of a maximum is the need for the sensitive elements of the main friction group to transfer part of its full load at an equal number of friction pairs of both friction groups, and for the sensitive elements to transfer the full load of the main friction group at a lower number of friction pairs than in the additional friction group.

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Substantiation of the parameters of vibration systems in the cab of the gantry crane at the workplace of crane operators

Cited by 29 publications

References 0 publications

Theoretical studies on the calculation of the noise of impact equipment in blacksmith shops

Theoretical studies on the calculation of the noise of impact equipment in blacksmith shops

Soundproofing presses by placing its nodes in a soundproof casing, including drive components

The process of increasing the stable operation of the working body in crank presses

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