Stability control for a huge excavator for surface
Jan 01, 2016 · An excavator with bucket-wheels used in surface mining operations comprises a chassis 1 mounted on a crawler unit 2 via a support 3 (as a tripod) and a heavy thrust bearing 4.A rotating ensemble is mounted on the chassis which can rotate about a vertical axis OZ, which comprises a tower 5 and a support arm 6.The support arm is articulated at one end relative to …
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MATHEMATICAL MODELING OF DYNAMIC PROCESSES OF …
MATHEMATICAL MODELING OF DYNAMIC PROCESSES OF BUCKET WHEEL EXCAVATORS Srdjan Bosnjak, Zoran Petkovic, Nenad Zrnic, Slobodan Petric Corresponding Author: S. Bosnjak, University of Belgrade, Faculty of Mechanical Engineering Kraljice Marije 16, 11000 Belgrade, Serbia & Montenegro Phone: +381 11 3302–290, Fax: + 381 11 3370–364
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Assessment of the Correlation Between the Numerical and
Experimental Dynamic Characteristics of the Bucket Wheel Excavator in Terms of the Operational Conditions In the paper authors present their attempt in the validation process of the numerical model on the basis of experimental results. The Modal Assurance Criterion between the numerical and experimental model was selected as the indicating factor.
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Dynamics and Control of the Bucket-Wheel Excavator: Part
Bucket-Wheel excavators (BWE) represent a specific type of complex machine system used in mining technology. During operation, the system is exposed to a number of external forces and disturbances like digging resistances on the Bucket-Wheel that cause transverse, longitudinal, and torsional vibrations.
Get a quoteDynamics and Control of the Bucket-Wheel Excavator: Part I
Aug 01, 2021 · Model for dynamic calculation of the entire structure of the undercarriage, slewing platform and the pylons of bucket wheel excavator SchRs 630 included concentrated masses in three directions, namely, mass of bucket wheel boom (estimated: 220,000 kg) and the counterweight boom (estimated: 212,000 kg).
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Investigation on cutting resistance characteristic of
Sep 01, 2021 · The bucket wheel excavator is a kind of efficient bulk material conveying equipment, which is widely used in raw materials storage and transportation yards. As the most important design basis, the excavating resistance of bucket wheel is a very important factor that often causes structural damage and intensive vibration [ 1, 2, 3 ].
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Modeling the effect of executive device of a bucket-wheel
Nov 15, 2005 · An algorithm is proposed and substantiated to calculate the optimum trajectory of scooping for the dynamic bucket-wheel and stationary bucket excavators. The applicability of the developed program in determining mineral losses and impoverishment during selective and bulk-selective mining in bedded deposits is demonstrated.
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Impact of superstructure weight and center of gravity
of gravity position to the bucket wheel excavator dynamic stability Milorad Pantelic 1 and Sava Kovacev 1 3.1 Dinamical model of bucket wheel exavator in vertical plane Comprehensive review of approach to problem of structure and mechanism of bucket wheel excavators modeling is given in different literature. Following assumptions have been
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THE DYNAMIC MODELING OF A SUBSYSTEM FOR THE …
Bucket-Wheel excavators (BWE) represent a specific type of complex machine system used in mining technology. During operation, the system is exposed to a number of external forces and disturbances like digging resistances on the Bucket-Wheel that cause transverse, longitudinal, and torsional vibrations.
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Stability control for a huge excavator for surface
A holistic approach to analyzing the dynamic behaviour of a bucket wheel excavator (BWE) superstructure, which is practically neglected by technical regulations but …
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MODELLING AND SIMULATION OF THE STERILE ROCKS …
BUCKET WHEEL EXCAVATORS . Abstract: This paper presents the modeling and simulation of the sterile rocks excavation process using bucket rotor excavators. The modeling and simulation of the excavation process is carried out in Matlab-Simulink, based on an original mathematical model are surprised the dynamic
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PROCESSING THE LIFETIME OF BUCKET WHEEL …
kinematic scheme of the bucket wheel driving mechanism in excavator SRs 470.20.3 LAUHAMER, consisting of a motor (1), elastic coupling with a brake (2), four-step reduction gear (3) with a lamellar coupling (4) on the second shaft of the reduction gear, and the bucket wheel (5) with 8 buckets [1]. Fig. 1. Bucket Wheel Excavator Fig. 2.
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EXTERNAL EXCITATIONS AND DISTURBANCES WITH …
They are based on modelling bucket wheel excavators and the simulation of their work. Fig.1.a shows the driving mechanism of the boogie-wheel of the excavator SRs 470.20.3 LAUHAMER, as a real system consisting of a motor (EM), an elastic coupling with a brake (SK), a four-step reducor (R) with a lamellar coupling (LS) on the reducor's
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ASSESSMENT OF THE MAXIMUM POSSIBLE EXTENSION OF …
technological requirement is increasing the bucket wheel boom length of the excavator SchRs740. Modelling and simulation of the dynamic behaviour of an elevator are shown in [1]. Analysis of the dynamic behaviour and condition of the BWE elements using the finite element method, are shown in many papers [2-7]. In
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Impact of superstructure weight and center of gravity
of gravity position to the bucket wheel excavator dynamic stability Milorad Pantelic 1 and Sava Kovacev 1 3.1 Dinamical model of bucket wheel exavator in vertical plane Comprehensive review of approach to problem of structure and mechanism of bucket wheel excavators modeling is given in different literature. Following assumptions have been
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The influence of incrustation and chute blockage on the
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
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A Review on Mechanical and Hydraulic System Modeling of
Therefore, modeling of an excavator is an important first step toward the development of advanced excavators. This paper reviews results of recent studies on the modeling of mechanical and hydraulic subsystems for the simulation, design, and control development of excavator systems. Kinematic and dynamic modeling efforts are reviewed first.
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Dynamics of Mini Hydraulic Backhoe Excavator: A Lagrange
the operations of the excavator, the dynamic model of A. J. Koivo proved to be a comprehensive input [1]. The development of such a comprehensive dynamic model for the backhoe excavator in digging mode (in three degrees of freedom only) using Lagrange-Euler approach and comparison of the same with A. J. Koivo s N-E dynamic model is another
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Dynamic responses of a gantry crane system due to a moving
Mar 26, 2014 · S. Bošnjak, N. Zrnić, D. Oguamanam, On the dynamic modelling of bucket wheel excavators, FME Transactions 34 (4) (2006) 221–226. Google Scholar [4] J. Czmochowski, P. Moczko, Numerical-experimental analysis of bucket wheel excavator body vibrations, in: Proc. 22nd Danubia-Adria Symposium of Experimental Methods in Solid Mechanics, Italian
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Amazon.com: Technic Bucket Wheel Excavator Construction
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