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1
Content available Structural design of a boom mounting of a mast type jib crane for handling sludge pumps
Molnár Denis, Blatnický Miroslav, Dižo Ján, Ishchuk Vadym
Journal of Mechanical and Energy Engineering
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2022
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Vol. 6, No 2
1--6
EN
The paper is a continuation of the issue of the technical solution of a mast type jib crane for handling sludge pumps. It serves for the use in Building no. 900, Block V2, of the nuclear power plant Jaslovské Bohunice. It is an optimization of the original, in-service damaged handling device with manual control of lift and rotation. The overloading of the device has an insignificant effect on the lifting force on a crank handle. It was found that the lifting force permanently falls within the recommended range of 120 to 160 N for convenient operation by a single worker. Inasmuch as there is a complete absence of bearings in the slewing gear in the original design, it is the solution to this issue that is the subject of the paper. The problem of pulling out the sludge pumps, which was established in the course of using the jib crane, ingeniously provided the opportunities to further design changes on the original design. The solution offered was to scrap the original design of the carrier inserted into the support and replace it with a fixed mast on which the boom would rotate. Accordingly, it would potentially be feasible to increase the load capacity of the jib crane, and thus the issue of the sludge pumps attached to the tank bottom would be solved. Moreover, it is attainable to extend the scope of this crane in this way.
2
Content available Stability assessment as a criterion of stabilization of the movement trajectory of mobile crane working elements
Kacalak W., Budniak Z., Majewski M.
International Journal of Applied Mechanics and Engineering
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2018
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Vol. 23, no. 1
65--77
EN
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.
3
Content available Crane stability assessment method in the operating cycle
Kacalak W., Budniak Z., Majewski M.
Transport Problems
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2017
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T. 12, z. 4
141--151
EN
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.
4
Content available Projekt koncepcyjny garażowego podnośnika samochodowego umożliwiającego piętrowe składowanie pojazdów
Chomka G., Chudy J., Lessnau P.
Autobusy : technika, eksploatacja, systemy transportowe
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2015
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R. 16, nr 6
63-66
PL
W artykule przedstawiono projekt garażowego podnośnika samochodowego umożliwiającego piętrowe składowanie pojazdów. Wykorzystano mechanizm równoległowodowy umożliwiający swobodny dostęp do drzwi z obojga stron i prosty montaż.
EN
In this paper present project of garage car lift allowing vehicle bunk storage. Parallelogram mechanism used to allow free access to the door from both sides and easy installation.
5
Wpływ przeciążenia ponad nominalny udźwig suwnicy pomostowej na pracę mechanizmów napędowych (1)
Blum A., Musioł M.
Dozór Techniczny
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2012
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z. 6
122--127
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