Nr 2/2022 (550)
MAREK WOJTAS, DAMIAN KAZUBIŃSKI, KLAUDIUSZ PILARZ
AN INNOVATIVE CROSSING POWERED SUPPORT OF THE HENNLICH-20/43-CH TYPE
The underground mining of minerals with a longwall system requires the construction of two parallel galleries (bottom road, top road). As the longwall progresses, they are eliminated (mining from the boundaries). Reconstruction of this area, i.e., the wallroad crossing, is usually carried out manually. Other methods can be used to reduce the physical effort of handling the wall. One way is to use supports dedicated to these locations and an example of such a solution is the HENNLICH-20/43-CH support (Fig. 3). The article discusses the advantages of using mechanized power support as an alternative to development with individual props. The technical parameters of the selected type of mechanized power support are presented.
MECHATRONIC DESIGN OF A TWO-WHEELED MOBILE PLATFORM
The article presents the results of work on a project for a two-wheeled self-balancing mobile platform prepared as part of engineering work. The purpose of creating the structure was to enable the increased mobility of an adult over short distances in an urbanized environment.
The whole design work was divided into several parts. In the first stage, requirements were assumed for the design of the device, electrical elements chosen, and a diagram of their electrical connections is presented. In the second part, the created CAD model of the structure is presented and some of mechanical elements described. In order to check the strength of the structure, the FEM analysis of the device body was carried out. The penultimate part was to analyze the problem of the inverted pendulum, which allowed to separate the state space model into a base subsystem and a control stick subsystem necessary to develop the control for the platform. In the last part, a stabilizing algorithm based on the LQR regulator was prepared and the use of sensory fusion in the form of a Kalman filter was focused on in order to increase the accuracy of determining the angle of deflection of the structure.
Finally, simulations were prepared in the Simulink environment in order to check the correctness of the prepared algorithm. The whole was crowned with a summary of the work and setting directions for further research.
WALDEMAR WÓJCICKI, MICHAŁ WÓJCICKI
THE USE OF MINE WAREHOUSE STOCKS FOR THE CORRECT COMPLETION OF MINING BELT CONVEYORS
The article presents the principles of the rational use of conveyor subassemblies owned in underground coal mining plants for the purpose of listing complete devices appropriate for specific locations and required operating parameters. Since these are often units from different manufacturers, the user will be required to prepare a collective User Manual and issue a Declaration of Conformity.
JAN GIL, KAZIMIERZ STOIŃSKI, TOMASZ KARCZEWSKI, GRZEGORZ PUTANOWICZ
TECHNOLOGIES USED IN THE MANUFACTURE AND REPAIR OF MACHINERY AND EQUIPMENT AT ZRP “BIERUŃ”
The following paper presents the use of various technologies in the manufacture and repair of mining machinery carried out by the ZRP “Bieruń” plant, all of which complement each other in order to provide the customer with a product of the highest quality. The systematic expansion of the machine park and the necessary technical facilities over many years has focused on numerically controlled machines, welding robots and, in product preparation, CAD/CAM computer programs. The issue is presented using the example of the production of the ZRP-15/35-POz powered roof support section.
- Published On : 2 months ago on 19 May 2023
- Author By : Marcin
- Last Updated : July 4, 2023 @ 1:52 pm
- In The Categories Of : Releases
- Tagged With : belt conveyor, CAD/CAM computer programs, CNC machines, components of belt conveyors, crossing support, Kalman filter, mining plant, modern technology, niche development, powered roof support sections, road section, securing the wall-bottom road excavation, self-balancing vehicles, two-wheeled structures, wall conveyor fitting, welding methods