Wyniki wyszukiwania - BazTech

1

Fatigue life of compacted wire ropes for applications in deep mining

Kubiś Bogusław, Olszyna Grzegorz, Szade Piotr, Tytko Andrzej

Management Systems in Production Engineering

|

2023

|

nr 1 (31)

95--101

EN

Recent months have highlighted the progressing energy crisis across Europe in connection with the severe sanctions imposed on the import of hydrocarbons and coal from Russia. This is particularly visible in Poland, where over 40% of electricity is generated from coal, while in individual households it is the primary source of heat. This situation puts the already enigmatic plans of shutting down coal mining in Poland into question. Therefore, work aimed at increasing the extraction capacity of existing shafts while maintaining the highest level of operational safety is still valid. This article concerns the issues of the fatigue life of compacted ropes used as hoist ropes in mine shafts. The discussion regarding the use of these ropes among shaft hoist users has been going on for several years. This paper presents the unique results of compacted rope fatigue tests carried out at the Central Mining Institute in Katowice. In the authors’ view, these results and their interpretation should serve to clarify several important aspects that arouse the interest of users.

2

System wielowarstwowego nawijania lin na bębny linowe

Tytko Andrzej, Olszyna Grzegorz

Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie

|

2023

|

nr 7

10--16

EN

Mining shaft hoistings are relatively rarely equipped with drum winders with multilayer rope winding. To prevent the rope from jamming when winding in this way, for example, LEBUS-type liners with parallel grooving of the drum on part of its circumference with two oblique passes are used. With this system, the rope is wound and unwound smoothly, in a way that increases its durability up to four times. However, incorrect installation of liners with parallel and inclined grooving arrangements can result in rope destruction. Correct installation of these means that the inclined groove zones must be opposite each other and all wedges must be properly made and installed. Drum machines with multilayer winding require the use of special wire rope designs. The preferred ropes are those with significant lateral stiffness, based on IWRC-type steel or plastic cores resistant to lateral deformation. All the conditions for use on the drum of a machine with LEBUS lining are met by ropes of construction 34 x 7-FC or 35 X 7-WSC, as well as ropes of construction NOTORPLAST and Turboplast ropes.

PL

W artykule scharakteryzowano sposoby nawijania lin nośnych na bęben linowy wciągarek bębnowych, wpływ geometrii bębna linowego na trwałość lin przy ich wielowarstwowym nawijaniu, prawidłowe sposoby rowkowania wykładzin bębnów i nawijania lin dla systemów z wykładziną oraz warunki właściwej eksploatacji dla tego typu rozwiązań z uwzględnieniem systemu rowkowania bębnów. Na podstawie omówionych rozwiązań przedstawiono warunki, jakie powinny spełniać liny nośne przeznaczone do pracy w maszynach wyciągowych górniczych wyciągów szybowych z układem wielowarstwowego nawijania lin na bęben. Na podstawie analizy błędów montażowych wskazano przyczyny przyspieszonego zużycia lin w takim układzie.

3

A tool for determining the number of bends and places of accumulation of potential wear of steel ropes operating in the luffing systems of basic opencast mining machines

Olszyna Grzegorz, Tytko Andrzej

Mining Machines

|

2022

|

vol. 40, iss. 4

229--237

EN

This article presents the issues of the wear of steel ropes operating in the lowering systems of the largest wheel excavators (BWE), type SchRs, Rs, KWK operating in KWB Bełchatów. Sudden degradation of these ropes may lead to the complete shutdown of the BWE-Belt- Stacker system from operation. However, this can be avoided by regular visual inspections of hoist ropes. Unfortunately, the rope systems in each excavator are different, and their availability is difficult. In order to simplify this task, the authors of this paper have developed an IT tool that allows the modelling of a given multi-pulley rope system and the indication of critical places on the rope for given working conditions. A simplified description of this tool is the subject of the article.