Constructional Features of Ropes in Functional Units of Mining Shaft Hoist

Mańka, Eugeniusz; Słomion, Małgorzata; Matuszewski, M.

doi:10.2478/ama-2018-0011

Cited by 9 publications

(8 citation statements)

References 14 publications

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“…It should be emphasized that determination of a set of the most significant assessment criteria to be used for identification of significant characteristics consistent with the accepted criteria and establishing their significance is an important task for determination of a given system functioning quality assessment [2][3].…”

Section: Introductionmentioning

confidence: 99%

Analysis of assessment criteria for selected systems of transport means operation

et al. 2018

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Abstract. The problems discussed in the study are connected with evaluation of complex technical systems functioning, in particular, transport systems. It was assumed that evaluation of their functioning depends on fulfilment degree of selected criteria. Therefore, it is important to determine a set of criteria including their type, number and importance. Since the research object is a public city transport system considered to be a sociotechnical system of the type: human (driver) -machine (vehicle) and the environment , the criteria to be used for the assessment must include behavior of humans, operation of transport means, and the environmental impact. Thus, selection and determination of importance of significant, time variable, measurable and independent characteristics whose values, in a given time moment or a given time interval, define fulfillment degree of the criteria provide the basis for evaluation of such systems functioning. The quality of technical systems functioning in time is assessed on the basis of the criteria fulfilment degree or comparison and classification of different systems of the same type. It needs to be emphasized that the choice of optimal methods for selection of relevant criteria and determination of their impact on the analyzed system functioning is the research subject of study.

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Section: Introductionmentioning

confidence: 99%

Analysis of assessment criteria for selected systems of transport means operation

et al. 2018

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“…Each technical object has a set of functional qualities, such as: reliability, wear resistance, fatigue strength, resistance to movement, corrosion resistance, etc. Based on numerous studies, it may be concluded that these characteristics depend on the greatest extend of the condition of the surface layer, especially on the parameters characterizing the geometric surface structure [1][2][3][4][5][6][7][8]. Due to the fact that most these damages happen inside of the surface layer, the proprieties enlarging-resistance on destructive working extortions during machine and devices operation are given rught to the layer.…”

Section: Introductionmentioning

confidence: 99%

Assessment of friction pair elements condition based on changes in the geometric surface structure isotropicity degree

et al. 2019

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This paper regards the possibility of using the degree of the surface isotropicity to assess the condition of the surface layer friction pair elements. The analysis is based on certain changes in operational and technological surface layer. The methods of constituting the surface layer have been characterized due to the features of geometric surface structure as well as the problem of assessing the condition of surface in terms of functional features and tribological characteristics. The evaluation of the occurring changes in the surface layer have been conducted by performing tribological tests and for descript condition of surfaces the degree of surface isotropicity and weight loss of specimens have been adopted. Whereas the assessment of technological state of the surface layer has been carried out for the surface after its coating. Based on the analysis, it has been found that the use for assessment the condition of surface layer and the degree of the surface isotropicity are useful and it is an alternative way or supplement to classical adoption of a properly selected set of roughness parameters to evaluate the potential functional characteristics of friction couples surfaces.

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“…Steel ropes are complex flexible structures used in many technical applications, such as elevators [1], crane [2,3,4], marine applications [5], cable ways and hoisting mine applications [6,7]. In many high-rise residential buildings or multistorey warehouses, machinery, so called lifts, are used for the vertical transportation of people or weights between attitudinally distant places [8].…”

Section: Introductionmentioning

confidence: 99%

Experience of the Crane Steel Wire Ropes Non-Destructive Tests

Peterka¹,

Krešák²,

Vojtko³

2018

Adv. Sci. Technol. Res. J.

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The non-destructive tests (NDT) of the steel wire ropes put on the crane pulley blocks comprise more than a half of our NDT services. The intensive utilization of cranes often leads to critical situations endangering health and safety at work. The operators are forced to provide safety use of the cranes due to new cranes constructions, new construction of the block pulley and put on the new steel wire rope constructions. The NDT tests of the crane steel wire ropes are coordinate by the Standard ISO 4309. We have experienced only the crane steel wire ropes with an individual wire rope core during our NDT tests so far. The visual NDT test usually used is ineffective to the steel wire ropes with this construction. Based on our previous experience it can be confirmed that surface ruptures are produced after the disintegration of wires inside of a rope; it often leads to the rope abruption during its operation. The reduction of the pulley block dimensions often leads to the problem of the multi-axis rope bending. This kind of the rope line in the pulley block causes the increase of the fretting fatigue of the wires and the rope strands. The same type of the stress is created when the dead ends of the rope are badly constructed.

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Constructional Features of Ropes in Functional Units of Mining Shaft Hoist

Cited by 9 publications

References 14 publications

Analysis of assessment criteria for selected systems of transport means operation

Analysis of assessment criteria for selected systems of transport means operation

Assessment of friction pair elements condition based on changes in the geometric surface structure isotropicity degree

Experience of the Crane Steel Wire Ropes Non-Destructive Tests

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