The Experts below are selected from a list of 81 Experts worldwide ranked by ideXlab platform

Ja Možina - One of the best experts on this subject based on the ideXlab platform.

  • Control measurements of Crane Rails using terrestrial laser scanning
    2016
    Co-Authors: Ja Možina
    Abstract:

    V magistrskem delu je predstavljena nova metoda za določitev geometrije tirnic žerjavne proge, in sicer na podlagi meritev s terestričnim laserskim skenerjem in z izdelanim računalniškim programom, ki na osnovi oblaka točk tirnic določi horizontalni in vertikalni potek žerjavne proge. Metodo smo testirali na žerjavnih progah hidroelektrarne Krško in termoelektrarne Brestanica, za kateri smo po skeniranju iz oblaka točk ekstrahirali zgornjo in stransko notranjo ploskev glave tirnic. Posamezno žerjavno progo smo razdelili na segmente, skozi katere smo izravnali ravnine in določili karakteristične linije tirnic. Na osnovi profilov smo med karakterističnima točkama na istem profilu določili položajne in višinske odmike tirnic, dejanski razpon in višinsko razliko med tirnicama žerjavne proge in preverili, ali so izračunani parametri geometrije skladni s predpisi, ki jih določa obravnavan standard. V nalogi smo tudi raziskali, kako se parametri geometrije tirnic, ki so določeni z metodo terestričnega laserskega skeniranja, ujemajo s parametri, določenimi s klasično polarno metodo detajlne izmere. Prav tako smo tudi testirali, kako na določitev parametrov vpliva dolžina segmenta in gostota točk tirnic. Na osnovi ugotovitev, do katerih smo prišli med izdelavo naloge, smo podali določene smernice za kakovostno določitev geometrije tirnic žerjavne proge s tehnologijo terestričnega laserskega skeniranja.The master\u27s thesis presents a new method for Crane Rail geometry determination, i. e. based on measurements obtained by using a terrestrial laser scanner and a dedicated computer programme which, on the basis of the Rail points cloud, determines the horizontal and vertical path of the Crane Rail. The method was tested on the Crane Rails of Krško Hydroelectric Power Plant and Brestanica Thermal Power Plant, where, after scanning the point cloud, the upper and the lateral internal surface of Railheads was derived. Each Crane Rail was divided into segments, through which the planes were fitted and the characteristic Rail lines were determined. Based on the profiles, positional and height Rail offsets were determined between the characteristic points on the same profile, as well as the actual span and the height difference between the Crane Rails. Furthermore, it was verified whether the calculated geometry parameters complied with the rules set by the standard in question. The thesis also examined how the Rail geometry parameters – as determined by the terrestrial laser scanning method – correspond with the parameters determined by the classical polar method of surveying. Furthermore, it was tested how the determination of patterns is influenced by the length of the segment as well as the density of Rail points. Based on the conclusions drawn during the elaboration of this thesis, certain guidelines are given on how to ensure the quality of Crane Rail geometry determination using terrestrial laser scanning technology

  • Control measurements of Crane Rails using terrestrial laser scanning
    2016
    Co-Authors: Ja Možina
    Abstract:

    The master's thesis presents a new method for Crane Rail geometry determination, i. e. based on\ud measurements obtained by using a terrestrial laser scanner and a dedicated computer programme\ud which, on the basis of the Rail points cloud, determines the horizontal and vertical path of the Crane\ud Rail. The method was tested on the Crane Rails of Krško Hydroelectric Power Plant and Brestanica\ud Thermal Power Plant, where, after scanning the point cloud, the upper and the lateral internal surface\ud of Railheads was derived. Each Crane Rail was divided into segments, through which the planes were\ud fitted and the characteristic Rail lines were determined. Based on the profiles, positional and height Rail\ud offsets were determined between the characteristic points on the same profile, as well as the actual\ud span and the height difference between the Crane Rails. Furthermore, it was verified whether the\ud calculated geometry parameters complied with the rules set by the standard in question. The thesis also\ud examined how the Rail geometry parameters – as determined by the terrestrial laser scanning method –\ud correspond with the parameters determined by the classical polar method of surveying. Furthermore, it\ud was tested how the determination of patterns is influenced by the length of the segment as well as the\ud density of Rail points. Based on the conclusions drawn during the elaboration of this thesis, certain\ud guidelines are given on how to ensure the quality of Crane Rail geometry determination using terrestrial\ud laser scanning technology

Kamiński Waldema - One of the best experts on this subject based on the ideXlab platform.

  • The Application of Kalman Filtering to Predict Vertical Rail Axis Displacements of the Overhead Crane Being a Component of Seaport Transport Structure
    Sciendo, 2016
    Co-Authors: Filipiak – Kowszyk Daria, Kamiński Waldema
    Abstract:

    As the devices designed to transport materials, the overhead Cranes should meet certain geometric requirements for their operation to be safe. The presently available geodetic equipment, in particular total stations, provides opportunities for precise 3D measurements of coordinates of the controlled points. These coordinates make a basis for correcting the height of Crane runway axes. The paper presents a method to calculate position corrections for the Crane Rail axes in both vertical and horizontal direction, and indicates that these results can find much wider application. Among other goals, the observations of this type, along with the Kalman filtration method, can be used to predict vertical displacements of the Crane Rail axes. The object of practical considerations in the paper is a Crane working in the area with unfavourable geotechnical conditions and the settling limits attributed to this Crane and location area in the technical design. The sample practical application has confirmed the validity of the use of the proposed solution for evaluating the operational safety of the Crane. Although the tests were performed for the gantry Crane, the proposed solution is believed to be applicable for other types of overhead Cranes

  • Determination of Rectification Corrections for Semi Gantry Crane Rail Axes in the Local 3D Coordinate System
    Sciendo, 2015
    Co-Authors: Filipiak Daria, Kamiński Waldema
    Abstract:

    Electronic tacheometers are currently the standard instruments used in geodetic work, including also geodetic engineering measurements. The main advantage connected with this equipment is among others high accuracy of the measurement and thus high accuracy of the final determinations represented for example by the points’ coordinates. One of many applications of the tacheometers is the measurement of Crane Rail axes. This measurement is based on polar method and it allows to get the spatial coordinates of points in 3D local system. The standard technology of measurement of Crane Rail axes and development of its calculations’ results is well-known and widely presented in the subject literature. At the same time new methods of observations results evaluation are developing

Zondlak Zdeněk - One of the best experts on this subject based on the ideXlab platform.

  • Survey and Calculation of Geometric Parameters of the Crane Rail
    Vysoká škola báňská - Technická univerzita Ostrava, 2018
    Co-Authors: Zondlak Zdeněk
    Abstract:

    Diplomová práce se zabývá zaměřením a zpracováním geometrických parametrů nové jeřábové dráhy v areálu firmy Ondřejovická strojírna, a.s. Geometrické parametry a vypočtené úchylky jeřábové dráhy byly porovnány s montážními tolerancemi podle normy ČSN EN 1090-2+A1. Součástí této práce je také dle požadavků zadavatele zakázky grafické znázornění prostorových vztahů a technická zpráva k dané jeřábové dráze. Toto vyhodnocení bude sloužit jako jeden z podkladů k provedení ověřovací zkoušky revizním technikem zdvihacích zařízení.This thesis deals with the measuring and processing of the geometric parameters of the new Crane Rail in the area of the company Ondřejovická strojírna, a.s. Geometric parameters and calculated deviations of the Crane Rail were compared with the mounting tolerances according to ČSN EN 1090-2 + A1. Part of this work is, according to the requirements of the contracting authority, a graphical representation of spatial relations and a technical report on the given Crane Rail.544 - Katedra geodézie a důlního měřictvídobř

Podzemný Vojtěch - One of the best experts on this subject based on the ideXlab platform.

  • Survey and Calculation of Geometric Parameters of the Crane Rail
    Vysoká škola báňská - Technická univerzita Ostrava, 2015
    Co-Authors: Podzemný Vojtěch
    Abstract:

    Import 22/07/2015Tato diplomová práce se bude zabývat postupem měření jeřábových drah. Kontrolním zaměřením směrových a výškových průběhů kolejnic, jejich rozchodů a kolmosti jeřábové dráhy. Budou rozebrány normy, které mají vliv na toto měření. Měření bylo provedeno v prostorách průmyslového podniku BorsodChem MCHZ, s.r.o. v Ostravě – Mariánských Horách za účelem běžné kontrolní prohlídky dle ČSN 73 2604. V této práci budou vyhodnoceny tolerance a jejich porovnání s projektovaným tvarem a předepsanými normami tak, aby bylo možno zjistit, zda konstrukce nevykazuje nadměrné deformace, výškově a směrově vyhovuje provozu jeřábů a zda nedochází k nadměrnému opotřebení kolejnic.This thesis deals with the procedure of the Crane Rail measurements. The control focus on horizontal and vertical Rail curves, their track gavges and the perpendicularity of the Crane tracks. The standards that influence this measurement will be analyzed. The measurements was made in the industrial company BorsodChem MCHZ, Inc. in Ostrava – Mariánské Hory for routine inspenctions according to ČSN 73 2604. The tolerance and it´s comparison with the projected shape and regulatory standards are being evaluated in order to detect if the construction does not show any acessive deformation, if it satisfies the Crane operation both horizontaly and verticaly and if it does not lead to exessive detrition of Rails.544 - Institut geodézie a důlního měřictvívelmi dobř

Waldema Kamiński - One of the best experts on this subject based on the ideXlab platform.

  • NEW METHOD FOR DETERMINATION OF ADJUSTMENT CORRECTIONS FOR Crane Rail AXES
    2016
    Co-Authors: Waldema Kamiński
    Abstract:

    Electronic tacheometers are currently a standard instrument used in geodetic work, including also geodetic engineering measurements. One of the many applications of tacheometers in engineering geodesy are 3D control measurements of Crane Rail axes. This paper proposes a new method of computing adjustment corrections for Crane Rail axes based on 3D polar measurements performed with an electronic tacheometer. The intermediary method with conditions on parameters was used in the solution of the problem. The theoretical discussion was complemented with an example application on simulated results of observations. The obtained results confirmed the theoretical assumptions and encourage the verification of the presented proposal on practical examples