Podstawowe formy degradacji własności użytkowych łańcuchów ogniwowych górniczych stosowanych w maszynach ścianowych.

Łańcuchy ogniwowe górnicze stosowane są w układach pociągowych maszyn górniczych ścianowych, takich jak przenośniki ścianowe, strugi węglowe czy kombajny ścianowe z łańcuchowym układem posuwu. Ze względu na trudne warunki pracy panujące w wyrobiskach ścianowych następuje szybka degradacja własności użytkowych łańcuchów. W artykule przedstawiono podstawowe procesy niszczące prowadzące do degradacji własności użytkowych łańcuchów ogniwowych górniczych oraz dokonano charakterystyki pęknięć zmęczeniowych ogniw tych łańcuchów. Przedstawiono przykłady typowych uszkodzeń ogniw łańcuchów pociągowych stosowanych w maszynach górniczych

The synergy of fatigue, corrosion and abrasive wear processes in operation of mining round link chains

The mutual influence of fatigue processes, abrasive wear and corrosion of chain links on the functional properties of mining round link chains has been presented in this paper. Selected results of experimental investigations in the field of synergic impact of these destructive processes on the operational durability of mining chains have also been presented. The emphasis was given to the necessity of a comprehensive consideration of destructive processes that occur in various conditions of use of round link chains applied in mining machines

Eksploatacyjna diagnostyka ogniwowych łańcuchów górniczych stosowanych w pociągowych układach łańcuchowych maszyn ścianowych.

Łańcuchy ogniwowe górnicze są kluczowym elementem maszyn ścianowych, takich jak przenośniki zgrzebłowe i strugi węglowe. Niezawodność łańcuchów wpływa na poprawną pracę całego kompleksu i na wielkość wydobycia z wyrobiska ścianowego. W artykule przedstawiono problematykę diagnostyki łańcuchów ogniwowych górniczych stosowanych w maszynach ścianowych. Przedstawiono wybrane przykłady uszkodzeń ogniw łańcuchów górniczych oraz budowę przyrządu i sposób wykrywania pęknięć zmęczeniowych w ogniwach łańcuchów górniczych. Ponadto opisano budowę stanowiska służącego do wykonywania kompleksowej oceny własności użytkowych łańcuchów ogniwowych w warunkach eksploatacyjnych

The Use of a Roadheader Simulator in Research of Dynamics and Energy-Consumption of Excavating Underground Roadways and Tunnels

Boom-type roadheaders are commonly used for excavation of roadways in underground mines, tunnels, and other architectural structures using trenchless techniques, as well as sinking shafts and occasionally excavating the harder soil and softer formations in cut and cover construction. The main research and development of these machines is to offer solutions for automatic control. This refers to automation or robotization of the operation, and raises the possibility of their eventual unmanned operation. This article presents a roadheader research simulator which implements experimentally verified mathematical models describing the dynamics of a roadheader in operation and the rock cutting process. Due to very high computational requirements, a distributed system comprising several workstations connected via TCP/IP was used. Both the visualization of the roadheader in the heading face of the excavation and the graphic simulation of the course of the rock-cutting process were carried out using the Autodesk Inventor Professional 2022 graphics engine. It provided the simulator with a virtual scene environment and enabled the control of the roadheader model’s movement during the simulated cutting process, including the generation of breakout graphics in the heading face while drilling a roadway or tunnel. The presented roadheader simulator enables the determination of various time characteristics, for example, dynamic loads, power demand, efficiency, energy consumption, and others. It is still under development

The Use of a Roadheader Simulator in Research of Dynamics and Energy-Consumption of Excavating Underground Roadways and Tunnels

Boom-type roadheaders are commonly used for excavation of roadways in underground mines, tunnels, and other architectural structures using trenchless techniques, as well as sinking shafts and occasionally excavating the harder soil and softer formations in cut and cover construction. The main research and development of these machines is to offer solutions for automatic control. This refers to automation or robotization of the operation, and raises the possibility of their eventual unmanned operation. This article presents a roadheader research simulator which implements experimentally verified mathematical models describing the dynamics of a roadheader in operation and the rock cutting process. Due to very high computational requirements, a distributed system comprising several workstations connected via TCP/IP was used. Both the visualization of the roadheader in the heading face of the excavation and the graphic simulation of the course of the rock-cutting process were carried out using the Autodesk Inventor Professional 2022 graphics engine. It provided the simulator with a virtual scene environment and enabled the control of the roadheader model’s movement during the simulated cutting process, including the generation of breakout graphics in the heading face while drilling a roadway or tunnel. The presented roadheader simulator enables the determination of various time characteristics, for example, dynamic loads, power demand, efficiency, energy consumption, and others. It is still under development

Use of unmanned aerial vehicles for water sampling in hard-to-reach water reservoirs

Collecting water samples for laboratory analysis from hard-to-reach surface areas such as post-industrial reservoirs (for example, tailings depositories) or overgrown lakes and ponds poses several difficulties, and it is potentially dangerous for the persons carrying out such activity. This can be improved by the use of unmanned aerial vehicles (UAVs) while ensuring an adequate level of safety and full compliance with the requirements of PN-ISO standards. This article presents the possibility of using the BSP in the option of autonomous (automatic) operation, allowing for the collection of water samples intended for physico-chemical tests, from hard-to-reach surface reservoirs, following the provisions of the relevant PN-ISO standards