Development of the theory of laying a hoisting rope on the drum of a mining hoisting machine

Zabolotnyi, Kostiantyn; Panchenko, Olena; Жупієв, Олександр Леонідович

doi:10.1051/e3sconf/201910900121

Cited by 7 publications

(9 citation statements)

References 1 publication

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“…13 shows a schematic diagram of a hydraulic drive of erector devices, which consists of a constant pressure hydraulic pump 0 p ; hydraulic tank; 4-way hydraulic DCV, in which the stroke of the spool ( ) u t depends on time; a double-acting hydraulic cylinder (hereinafter referred to as the hydraulic cylinder) and a material point with a mass M affected by a resistance force r F . For the function of each channel of the spool, under the assumption that the inertia of the liquid is not taken into account, the following formula is valid, which reflects the flow rate of the liquid, the stroke of the spool and the pressure drop in its cavities, namely (8) it follows that the movement of the object is possible only in the case when the applied pressure exceeds the loss of hydraulic resistance, i.e. 1 ( ) 1.…”

Section: Analytical Model Of Hydraulic Drivementioning

confidence: 99%

“…The results of scientific research in the field of mechanics of new designs of mine hoisting machines are also of great practical importance. This concerns the justification of new methods for determining the loads during multilayer winding of a rubber cable [7], including assessing the effect of parameters of a rubber cable on the rigidity of the winding body [8]. Other sources are devoted to the theory of laying a hoisting rope on a drum [9,10], justification of the algorithm for selecting the parameters of the elastic lining of the drums [11], determination of the dependence of dynamic parameters on the parameters of the technical condition of individual units of the installation [12,13], and may be useful in the practice of studying the stress-strain state of drums of mine hoisting machines [14].…”

Section: Introductionmentioning

confidence: 99%

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Development of the concept of recurrent metamodeling to create projects of promising designs of mining machines

et al. 2020

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In the work on the example of a tunnel erector, the concept of recurrent metamodeling is determined which allows engineering new designs of mining machines. In this case, the metamodel of their entire family is associated with the family of models of machine nodes. The effect of various laws of movement of the erector devices is analyzed and it is proved that its minimum time is observed under conditions of compliance with the U-shaped law. A mathematical model of the hydraulic drive of the erector devices has been developed, which allows, taking into account any options for moving the point mass, to determine the law of control of the movement of the spool of the hydraulic directional control valve (DCV) in relation to the laminar and turbulent type of liquid flow. The erector device metamodel was created using the algorithmic language MATLAB Simulink.

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Section: Analytical Model Of Hydraulic Drivementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of the concept of recurrent metamodeling to create projects of promising designs of mining machines

et al. 2020

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“…In [8], it has been revealed that after cryogenic treatment, the static strength of synthetic diamonds increases, caused by an irreversible change in the initial stress-strain state of the crystals, due to the ordering of the crystal lattice defective structure. In [9][10][11] a fl at model of the interaction of elements (cables) in a composite product is presented through a material binding them, which has excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Stress state of the grinding tool loaded with tangential force

Zabolotnyi¹,

Belmas²,

Bilous³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. Determining the interaction mechanism of discrete grains through material that binds them in a tool for abrasive material processing in the case of its loading with a tangentially directed cutting force. Methodology. Development and analytical solution to a mathematical model formulated on the basis of static equilibrium of an abrasive grain as a system element of tool grains bound with a material with excellent mechanical characteristics. Findings. A mathematical model has been developed and an algorithm has been formulated to analytically determine the stress-strain state parameters of a tool for abrasive processing of materials, which is loaded with a discrete cutting force, tangential to its working surface. The nature of the dependence of stresses and deformations on mechanical parameters, the quantity of grains and the material binding them in an abrasive tool, loaded with a unit tangential force, has been determined. Originality. The loading of the extreme grains leads to greater displacements, tangents of the shear angles of the material binding the grains. They decrease with increasing quantity of grain rows in the tool or with increasing quantity of grains to the nearest tool edge. Practical value. The distribution of interaction forces of grains and stresses in the material binding them has been determined. The found distribution allows one in the process of developing the tool and technology, in which it is involved, to comprehensively assess the influence of tangential load value of the tool working grain on its stress state and the material containing the grains. The determined stress state makes it possible to predict the number of loading cycles until the simultaneous rational wear of the grain and the destruction of that part of the material that contains it. The linear formulation of the problem makes it possible to take into account the mutual influence of the tangential loads of several grains on the stress-strain state of the tool as a whole.

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“…Величину зносу визначали за формулою: Результати дослідно-промислового випробування футерування з фенол-капрону. На основі вживаної поліамідної тканини була виготовлена і встановлена пружна футеровка з матеріалу фенол-капрон на підйомній машині Ц-3,5×2 [5,6]. Тип підйому -клітковий, діаметр каната 37,5 мм, крок укладання каната -40 мм, максимальний натяг каната становить 10 тс, швидкість підйому 5 м/с, довжина каната 800 м, середнє число циклів підйому 100.…”

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Technology of manufacturing composite phenol-nylon lining of drums of mine hoisting machines

Zabolotny,

Kukhar,

Panchenko

2023

Coll. res. pap. nat. min. univ.

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Objective. The development of an industrial technology for the production of phenolic caprolactam for lining the drums of mine hoisting machines, followed by testing of the material in industrial conditions. Methodology. A comprehensive approach that included several stages. The development of the technological process for the production of phenolic caprolactam was based on a detailed analysis of the optimal conditions for synthesis and material formation. The conduct of industrial tests ensured an in-depth study of the physical and mechanical properties of phenolic caprolactam, which is critical for its effective use. The manufacturing and installation of linings on mine hoisting machines provided an opportunity to assess the practicality of the developed material. Results. The successful development of an industrial technology for the production of phenolic caprolactam opens new possibilities for the production of lining materials. The study of the physical and mechanical characteristics of the material revealed its high strength and wear resistance properties, which are critical for application in mining conditions. Scientific novelty. For the first time, a comprehensive investigation has been conducted on the dependencies between the technological parameters of the phenol-caproic press composite manufacturing process (binder content, pressing temperature, specific pressure) and the key physical and mechanical characteristics of the resulting material (tensile strength and relative elongation). Standardized test methods were employed to ensure an objective assessment of the impact of parameter variations on material properties. Subsequently, statistical analysis of the experimental data yielded regression equations that quantitatively describe these dependencies. Practical significance. The developed technology ensures optimal conditions for achieving maximum strength of the phenolic caprolactam composite. This contributes to increasing the efficiency and safety of mine hoisting machines' operation.

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Development of the theory of laying a hoisting rope on the drum of a mining hoisting machine

Cited by 7 publications

References 1 publication

Development of the concept of recurrent metamodeling to create projects of promising designs of mining machines

Development of the concept of recurrent metamodeling to create projects of promising designs of mining machines

Stress state of the grinding tool loaded with tangential force

Technology of manufacturing composite phenol-nylon lining of drums of mine hoisting machines

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