Temat: lifting capacity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Asymmetric Lifting Capabilities for Different Container Dimensions
Autorzy:: Lee, T. H.
Cheng, T. S.
Powiązania:: https://bibliotekanauki.pl/articles/91162.pdf
Data publikacji:: 2011
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: lifting capacity
asymmetric lifting
container
Opis:: This study recruited 14 young male participants to examine human 4-h maximum acceptable weight of lifting (MAWL) and maximum weight of lifting (MWL) for different modes of asymmetric lifting and containers. The results showed that asymmetric lifting with trunk rotation decreased MAWL and MWL by 9.1 and 17.3%, respectively, and asymmetric lifting with body turn decreased MAWL and MWL by 6.1%, when compared with the symmetric lifting. The decreasing effects of container width and MAWL and MWL were greater than those of container length. Participants selected MAWL of ~33–37% of their MWL capability.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2011, 17, 2; 187-193
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Lifting capacity enhancement of a crawler crane by improving stability
Autorzy:: Shaikh, A. A.
Kumar D, D.
Powiązania:: https://bibliotekanauki.pl/articles/281530.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: crawler crane
stability
tipping load
lifting capacity
Opis:: The lifting capacity of a crawler crane is limited by its stability and structural strength. This paper analyzes the stability factor by calculating tipping loads at various load radii for a particular boom length. It shows that the tipping load decreases with an increase in the load radius. A new structural frame is proposed to extend out the superstructure counterweight of the crane. With such a proposed arrangement, it is shown that the lifting capacity of the crane, limited by stability, increases. Static structural analysis of the proposed structural frame is performed using ANSYS workbench software.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 1; 219-227
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Stability assessment as a criterion of stabilization of the movement trajectory of mobile crane working elements
Autorzy:: Kacalak, W.
Budniak, Z.
Majewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/265654.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: dźwig samojezdny
stabilność żurawia
udźwig
mobile crane
stability of crane
overturning torque
lifting capacity
tip-over axis
Opis:: The article presents a stability assessment method of the mobile crane handling system based on the safety indicator values that were accepted as the trajectory optimization criterion. With the use of the mathematical model built and the model built in the integrated CAD/CAE environment, analyses were conducted of the displacements of the mass centre of the crane system, reactions of the outrigger system, stabilizing and overturning torques that act on the crane as well as the safety indicator values for the given movement trajectories of the crane working elements.
Źródło:: International Journal of Applied Mechanics and Engineering; 2018, 23, 1; 65-77
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Crane stability assessment method in the operating cycle
Autorzy:: Kacalak, W.
Budniak, Z.
Majewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/375180.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: CAD/CAE
mobile crane
stability of crane
overturning torque
lifting capacity
tip-over axis
indicator of crane safety
żuraw przejezdny
stabilność żurawia
moment obrotowy wywracający
udźwig
Opis:: The article presents stability assessment of the mobile crane handling system based on the developed method with the use of the mathematical model built and the model built in the integrated CAD/CAE environment. The model proposed consists of the main crane assemblies coupled together: the truck with outrigger system and the base, the slewing column, the inner and outer arms, the six-member telescopic boom, the hook with lifting sling and the transported load. Analyses were conducted of the displacements of the mass centre of the crane system, reactions of the outrigger system, stabilizing and overturning torques that act on the crane as well as the safety indicator values for the given movement trajectories of the crane working elements.
Źródło:: Transport Problems; 2017, 12, 4; 141-151
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Application of electric capacity measurements to detecting delamination in blades of helicopter’s lifting and auxiliary rotors
Autorzy:: Gębura, A.
Powiązania:: https://bibliotekanauki.pl/articles/260596.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: surface delamination of lifting blades
electric deicing installation
diagnostics of failures by using electric capacity measurements
Opis:: This paper represents a series of the authors’ publications concerning effects of atmospheric conditions on aircraft [5-6, 11]. Hazards connected with separation ( delamination ) of heating elements from blade’s spar , namely: increased susceptibility to ice formation as a result of change in aerodynamic profile, decreased deicing effectiveness, shortened life of heating elements , weakened strength of blade’s structure, are described. In order to monitor the above mentioned delamination process during its early phase, these authors proposed to measure systematically electric capacity between the heating element and blade’s spar by means of a technical method. The electric capacity measurements performed by these authors on blades both in laboratory and service conditions demonstrated their practical usefulness for assessing delamination extent as well as for identifying areas where heating element separation from spar occurred. The method in question is simple , cheap , fast and non-interferring (non-destructive) as well as it does not require dismounting the blades off the helicopter. As proved in practice , it is especially useful in sea-rescue or military operational conditions. Special attention was paid to application of the method to composite blades where coming-off the heating element tape causes local overheating the blade structure , that impairs flexibility of composite’s layers and may lead even to local cracks which may trigger helicopter crash. These authors desire to apply the method as a standard unit of on-board diagnostic system in the future.
Źródło:: Polish Maritime Research; 2017, 2; 105-112
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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