Structural diagnostics and behaviour of bucket wheel excavator

Structural diagnostics and behaviour of bucket wheel excavator

Extensive vibrations of the belt conveyor drive

PDF | On Jan 1, 2010, Daničić Darko and others published Structural diagnostics and behaviour of bucket wheel excavator | Find, read and cite all the research you need on ResearchGate

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STRUCTURAL DIAGNOSTICS AND BEHAVIOUR OF BUCKET …

Jun 01, 2011 · Bucket wheel excavator SchRs800 (O&K). Diagnostics of condition and behaviour of steel structure and fault analysis, by finite elements method, has been subject for numerous researchers around the world. On the other hand, few researches are using these methods for mining machinery operation analysis, bucket wheel excavators in particular.

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Structural integrity assessment for a component of the

May 13, 2014 · Purpose – The purpose of this paper is to present a methodology for assessing the structural integrity of a tie member from a bucket‐wheel excavator, ESRC 470 model, which was in operation for about 20 years. The tie member is made of S355J2N structural steel. Following the period of operation, the occurrence of microcracks which can propagate by …

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Komatsu PC50UU-1 Hydraulic Excavator Service Repair Manual

Komatsu PC50UU-1 Hydraulic Excavator Operation and Maintenance Manual This manual contains profound data about looking after, gathering, dismantling, and …

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Theory and experimental research on six-track steering

The structural characteristics and steering behaviour of a six-track vehicle are described in this paper. Kinematic analysis for skid steering of a six-track vehicle under steady-state conditions on firm ground is conducted, with the relationship between thrust force and speed instantaneous centre of the track-terrain interface taken into consideration.

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THEINFLUENCEOFINCRUSTATIONANDCHUTEBLOCKAGEONTHE

Exploitation of bucket wheel excavators (BWEs) is accompanied by an increase of mass due to transport and adherence of a large amount of the material. Technical regulations do not account for the dynamic behaviour of BWEs. Such problems are analysed as quasi--static. A procedure and results of investigation of the influence of masses of the bucket

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INFLUENCE OF BUCKET WHEEL VERTICAL VIBRATION ON …

subsystems elements, bucket wheel drive system and supporting structure of bu cket wheel excavator. 3 Dynamics model of bucket wheel excavator Fig. 4 shows the kinematics scheme of the boom lifting drive system, consisting of the following: an asynchronous electric motor (EM), mechanical coupling

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Low-Frequency Vibration Testing of Huge Bucket Wheel

Dec 02, 2018 · The low-frequency vibration of the bucket wheel excavator has an important impact on the fatigue life of the structures. For conventional vibration testing methods, it is difficult and expensive to excite the overall low-frequency vibration of the whole machine. Hence, in this paper, the excitation method that uses the belt-supporting rollers on the boom as an …

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Computer Aided Design and Calculation of Bucket Wheel

Computer Aided Design and Calculation of Bucket Wheel Excavators. 2. MODELING OF LOAD DUE TO THE RESISTANCE TO EXCAVATION Operation of the BWE is characterized by the phenomenon of an outstandingly dynamic character. Identification of external load distribution, caused by resistance to excavation, requires the determination of the following

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ASSESSMENT OF THE MAXIMUM POSSIBLE EXTENSION OF …

in this paper is bucket wheel excavator SchRs740 boom structure. Bucket wheel excavator SchRs740 (Fig. 1) is operating at Tamnava West Field, Mining Basin Kolubara. Figure 1 Bucket wheel excavator SchRs740 . In order to determine the behaviour of the bucket wheel excavator SchRs740 boom structure, firstly the static and dynamic loads are analysed.

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Identification of Crack Initiation Cause in Pylons

structure and mining machinery structural parts [2-8]. The object of observation in this paper is a crack that has occurred on gusset plate of pylon vertical truss of bucket wheel excavator (BWE) SchRs630. Bucket wheel excavator SchRs630 (Fig. 1) is operating at Tamnava East Field, Mining Basin Kolubara since 1995.

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SCENARIO OF FRACTURE DEVELOPMENT IN BUCKET WHEEL …

2. FAILURE OF A BUCKET WHEEL EXCAVATOR To avoid unexpected failures of bucket wheel excavators (BWE) and save their structural integrity in servicenecessary, care during operational life, monitoring and diagnostics of all vitalelements of supporting structure, sometimes also repairing and redesign, are required.

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Diagnostics of bucket wheel excavator discharge boom

10. Maneski T, Ignjatović D. Repair and reconstruction of bucket wheel excavators. Structural Integrity and Life 2004; 1: 9-28. 11. Maneski T, Ignjatović D. Structural performance diagnostics. Structural Integrity and Life 2004; 1: 3-7. 12. Markowski T, Mucha J, Witkowski W. FEM analysis of clinching joint machine's C-frame rigidity.

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Bucket wheel excavator: Integrity assessment of the bucket

Abstract The bucket wheel boom tie-rods are vital structural parts of the bucket wheel excavators (BWE). Their failures inevitably cause BWE collapse and are followed, among other things, by a substantial financial loss (millions of €). Non-destructive testing revealed a flaw in the butt welded joint of the body and eye-plate of the bucket wheel tie-rod.

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A RESEARCH REVIEW ON EXCAVATOR BUCKET BEHAVIOUR …

Further research about bucket dynamics, stability, design and optimal working conditions is discussed as follows. 2.1 Literature Review. MilošTanasijević is discussed about Life-cycle of bucket wheel excavators which is analyzed in his study. He have concentrated on quality of servicecharacteristics.

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On the dynamic modelling of bucket wheel excavators

wheel boom, response of mechanism for bucket wheel boom lifting, estimation of rheolinearity level, analysis of impact of counterbalance weight on the dynamic parameters and system response. Keywords: bucket wheel excavator, structure, dynamics, resistance to excavation, mechanisms. 1. INTRODUCTION The operation of the bucket wheel excavators

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Behavior Diagnostics of Bucket Wheel Support Structure

Most common types of bucket wheels were analyzed by finite elements method in this paper. Also, relevant diagnostics parameters are defined for various constructions (stress concentration, deformation energy, distribution of potential and kinetic energy for main oscillation shapes). This approach enabled identification of weak spots and selection of such types of bucket wheel …

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1047. Redesigning components of power transmission

Generally, behaviour diagnostics of drive units at mining machines, particularly on bucket wheel excavators, gained importance during 1990-ies, mainly because of two reasons. First reason was that very few bucket wheel excavators were manufactured during that period, while the machines in operation are several decades old.

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Improvement of bucket wheel excavator maintenance by on

Diagnostics of condition and behavior is of crucial importance regarding proper decision on operation and maintenance of bucket wheel excavator including all of its components (from steel structure to engines-drives).

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load-bearing steel structure diagnostics on bucket wheel

the appearance of cracks on load-bearing steel structure of compact, hydraulic bucket wheel excavator was a perennial problem. unfavourable stress concentration, inadequate geometry and structure of materials, inadequate operational technology has led to crack appearance and reduced structural integrity. finite elements method is defined in this paper as a diagnostic tool …

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