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1

Use of the iLogic Autodesk Inventor tool in the process of designing self-propelled drilling rigs

Bołoz Łukasz

Mining Machines

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2022

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vol. 40, iss. 3

158--172

EN

In the article, a practical example of using the Autodesk Inventor Professional iLogic tool for designing self-propelled drilling rigs has been presented. Self-propelled drilling rigs are advanced mining machines with a complex structure. At the design stage, most of the structural changes affect the stability, manoeuvrability and coverage area of the machine. Working on detailed machine models is timeconsuming and unnecessary in the initial phase of the project. Therefore, a parametric 3D model of a two-boom drilling rig has been developed. It enables a quick analysis of selected machine properties depending on a number of significant parameters. The most important dimensions, masses and centres of gravity of each subassembly are entered by transparent editing windows. Next, model tests are carried out taking into account the pass through a face end of a given width as well as the coverage area of a face with specific dimensions. At each stage of model tests, the location of the machine's centre of gravity against the stability triangle background is analysed. In addition, the model allows entering the longitudinal and transverse angles of inclination of the working as well as determining the distance of the centre of gravity from the tipping edge. The model is a practical tool that makes it possible to easily determine the inner and outer turning radius as well as the working area of the machine while constantly controlling its stability. Due to the use of simplified geometry of subassemblies, the changes in parameters result in an instantaneous change of the model and allow a quick analysis of their impact.

2

Assessment of the stability of bev lhd loader

Bołoz Łukasz, Kozłowski Artur, Horak Wojciech

Management Systems in Production Engineering

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2022

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nr 4 (30)

377--387

EN

The article concerns the computational model for analysing the stability of the BEV LHD loader. Works were carried out to develop an innovative, light battery-powered loader, which was the subject of an R&D project implemented in cooperation with Bumech S. A. Compared to the existing solutions of loaders with similar load capacity, this one is distinguished by the use of an individual electric drive in each wheel and a replaceable battery. A physical and mathematical model was developed taking into account the specificity of the BEV LHD loader. In the model, the masses of the battery, individual drives, the platform and excavated material are taken into account separately. The developed model allows determining the loader wheel pressure on the floor, depending on the location of its components’ centres of gravity, the turning angle of the machine, the amount of excavated material in the bucket and the position of the bucket. The input parameters also include the longitudinal and transverse excavation slope angles. In addition, the model enables determining the inner and outer turning radius of the loader. To verify the theoretical model, dynamic simulation tests were carried out. The results of simulation analyses confirmed the correctness of the developed theoretical model. The model was used to prepare a calculation sheet for analysing the stability on the basis of the adopted parameters. In the article, selected results of the conducted stability analyses have been presented, along with the proposed parameters ensuring the loader’s stability. The developed theoretical model enables a quick assessment of the loader’s stability, which, due to a number of innovative solutions, differs from existing designs. The structure of the loader at the design stage is subject to numerous modifications, which affect the distribution of the centres of gravity of individual components. The developed model of the loader is a useful, parameterized tool that allows assessing the stability and the values of the turning radii of the machine.

3

Stateczność maszyn budowlanych

Richter M., Urbański A.

Builder

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2018

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R.22, nr 8

102--105

PL

Aby ciężkie maszyny budowlane mogły bezpiecznie wykonywać swoją pracę, należy sprawdzić, czy podłoże gruntowe ma wystarczającą nośność. W przypadku jej niedoboru należy odpowiednio wzmocnić podłoże poprzez wykonanie platformy roboczej. W artykule przedstawiono analizę współpracy palownicy gąsienicowej z podłożem słabonośnym wzmocnionym warstwą platformy roboczej.

4

Wybrane zagadnienia kształtowania koncepcji konstrukcji urządzenia wielozadaniowego do pracy w rowach melioracyjnych. Część 3. Zagadnienie stateczności urządzenia wielozadaniowego

Rutkowski J.

Journal of Research and Applications in Agricultural Engineering

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2013

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Vol. 58, nr 2

131--135

PL

Artykuł jest trzecim z serii artykułów poświęconych tematyce kształtowania koncepcji konstrukcji urządzenia wielozadaniowego. W pierwszym artykule opisano budowę topologiczną ramy głównej, w drugim omówiono zasadę wprowadzania maszyny do rowu, a w niniejszym artykule zaprezentowano i omówiono problemy bezpiecznego manipulowania ramionami bocznymi i przednim wysięgnikiem.

EN

This is the third article in the series dedicated to the problems of the melioration machine conception. This paper is set in the problem of multitask machine stability. In the first paper the issue of the build of the main frame was described. In the second, the way of putting the machine into the ditch was discussed. And now, the problems of safe steering and manipulation with the side arms and front manipulator are presented and discussed.