Удосконалення технології розбирання металоконструкцій механізованого шахтного кріплення
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Date
2023
Authors
Боков, В. М.
Сіса, О. Ф.
Мірзак, В. Я.
Телюта, Р. В.
Пукалов, В. В.
Bokov, V.
Sisa, О.
Mirzak, V.
Teliuta, R.
Pukalov, V.
Journal Title
Journal ISSN
Volume Title
Publisher
ЦНТУ
Abstract
Запропоновано технологію для розбирання металоконструкцій шахтного кріплення, що дозволяє
замінити фізично важку та небезпечну працю оператора на більш легкий, механізований процес з
використанням потужного гідравлічного біпреса. During operation, the hinge connections of mine supports practically stop rotating. This is due to the
fact that, as a result of the aggressive mine water and strong dustiness, the diametrical clearance of 1-2 mm
between the axis and the bushing is tightly filled with oxides and coal dust, especially in the connections of the
base. This circumstance leads to the fact that the axes (pins) in the hinges lose their mobility and require
significant effort for their dismantling. To repair the mechanized mine support, it is necessary to dismantle the
hinge connections, which are formed by axes and holes in levers (traverses), base ears, and overlaps. Currently,
the dismantling of hinge connections of mine supports is carried out using manual impact tools.
This operation is extremely labor-intensive, physically heavy, and belongs to hazardous work. The goal
of the study is to improve the working conditions of the operator during the dismantling process of axes in hinge
connections of mine supports by using a mechanized specialized hydraulic press. To achieve the set goal, the
following tasks must be solved: to determine the maximum permissible disassembly force of the axes, taking
into account the strength of the load-bearing structure elements; to develop a concept of a mechanized hydraulic
press, including the composition of the installation, the general technical description, the principle of operation,
the kinematic scheme, and the tool.
Studies have been carried out on the deformation modeling of mine support elements under load using
the SOLIDWORKS Simulation calculation module to determine the maximum permissible disassembly force of
the axes. It has been shown that the disassembly load of the shaft support axis with a force of more than 1000 kN
leads to the loss of the structural strength reserve, which is unacceptable. An effective technology for
dismantling the axes of a mechanized mine support has been proposed. A concept of an original specialized
hydraulic press "Kit-100" for dismantling axes has been developed, which allows replacing the physically heavy
and dangerous work of the operator with a lighter, mechanized process.
Description
Keywords
механізоване шахтне кріплення, моделювання, демонтаж осей, гідравлічний біпрес, кінематична схема, інструмент, mechanized mine support, modeling, axis dismantling, hydraulic press, kinematic scheme, tool
Citation
Удосконалення технології розбирання металоконструкцій механізованого шахтного кріплення / В. М. Боков, О. Ф. Сіса, В. Я. Мірзак [та ін.] // Центральноукраїнський науковий вісник. Технічні науки : зб. наук. пр. - Кропивницький : ЦНТУ, 2023. - Вип. 7(38). - Ч. 1. - С. 22-29.