No full-text available
To read the full-text of this research,
you can request a copy directly from the authors.
The development of idea of tunnel unit design with the use of morphological analysis
Abstract
Solid-state models of perspective units of tunnelling system complexes were developed, and their mass properties were identified in the study. Sequence diagram of basic operations involved in underground railway tunnelling was composed. Optimum alternatives of units as part of tunnel complexes that require the installation of additional removable modules for hole drilling and tunnelling were selected by means of morphological analysis. Modules can transform into each other and adapt to changes in the rock hardness within wide limits. The unit designed can perform tunnelling by means of shearer mining under the risk of a roof collapse and ground-based facilities destruction.
... У зв'язку з розвитком досліджень, що виконуються із застосуванням сучасних програмних комплексів, виникла потреба в розробці методів ведення обчислювального експерименту, який забезпечив би ефективне використання та модернізацію технологічних машин. Сьогодні наукові дослідження стосуються вдосконалення конструкцій тюбінгоукладачів [1,2]. Як показали результати розгляду цього питання, відомі конструкції тюбінгоукладачів мають підвищену металоємність [3] і потужність приводів. ...
Purpose. The research purpose is todevelop and substantiate a method for computer analysis of the stress-strain state that occurs in the tubbing erector manipulator mechanism with several degrees of freedom, using modern computing complexes based on the finite-element method. Methods. The research uses software complexes, with the help of which a calculation-theoretical apparatus has been created, which is intended for calculating dynamic and static loads that occur in the elements of the tubbing erector manipulator mechanism. The results of modeling the stress-strain state in the parts and nodes of this mechanism, obtained using the SolidWorks Motion and SolidWorks Simulation programs, have been compared. The errors in these results have been estimated. Findings. The effectiveness of the proposed analysis method, based on the combination of SolidWorks applications, in particular, SolidWorks Motion and SolidWorks Simulation, has been proven on the example of modeling the most complex design of the UT62 tubbing erector mechanism.The essence of the method is that initially, using the SolidWorks Motion application, the laws of motion of the motors are set. The tubbing erecting process itself is divided into discrete moments of time with the selection of parts in which the stress fields are calculated and with the determination of the maximum equivalent stress, using the Simulation Setup tool. The change in these stresses during the erecting cycle is analyzed, and if it is necessary to refine the data, the discrete time step of the mechanism motion is reduced. Specific information about the stress-strain state of the part is obtained in the SolidWorks Simulation application, using data imported from the SolidWorks Motion program about gravitational and inertial forces that occur in the tubbing erector mechanism. Originality. The scientific novelty of the developed method of computer analysis for the mechanism of the manipulator of the UT62 type tubing stacker is manifested in a comprehensive approach to modeling the stress-strain state, which includes the integration of data from SolidWorks Motion and SolidWorks Simulation programs for accurate determination of stresses, taking into account both gravitational forces and dynamic loads, which ensures high accuracy and complexity of calculations in real operating conditions of the mechanism. Practical implications. The proposed method can be used for modeling the motion of mechanisms of different complexity, in particular, in the design of domestic tubbing erectors.
Lagrange equations of the second kind are used to describe the dynamics of three-link manipulator lever tunnel stacker. Relative angles of rotation of manipulators units chosen as the generalized coordinates. The problem of the direct dynamics of the manipulator is solved. Expressions control torques for the main types of motion manipulators is given. With an accuracy of 11 %, using the motion simulation built in SOLIDWORKS Motion trajectory. Conclusions are drawn about selected control laws allowing to minimize the working time spent on the installation of the lining elements.
ResearchGate has not been able to resolve any references for this publication.