Bucket Wheel Excavator Damage by Fatigue Fracture – …
Sep 01, 2010 · High output torque of the bucket wheel shaft and the dynamic nature of operation may lead to fatigue failure of the shaft. In a brown-coal mine, a failure of the power transmission system of the excavator bucket wheel occurred. The excavator failure was caused by a fracture of the bucket wheel shaft.
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Analysis of the Causes of Fatigue Cracks in the Carrying
Mar 10, 2019 · In order to determine the damage of the carrying structure of the bucket-wheel excavator, non-destructive examinations were carried out using visual and magnetic-particle methods. The real loads occurring during operation of the machine in the case of fatigue were also determined. These measurements were used to verify the numerical model.
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Failure Analysis of a Bucket Elevator Shaft | SpringerLink
Jan 02, 2021 · The crack propagated in fatigue mode due to service conditions, ultimately leading to failure of the shaft . A case study involving a drive shaft fracture of a bucket wheel excavator reported similar mechanism of fracture at the welded joint . Another study involving failure of two overhead crane shafts reported rotational bending fatigue as
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Analysis of the drive shaft fracture of the bucket wheel
The goal of the study presented in this paper was to diagnose the cause of the damage of the bucket wheel excavator crawler chain links. case of …
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Analysis of the drive shaft fracture of the bucket wheel
The goal of the study presented in this paper was to diagnose the cause of the damage of the bucket wheel excavator crawler chain links. case of …
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Analysis of the cause of the girth gear tooth fracture
The bucket-wheel excavator, TAKRAF SRs 2000 × 32/5.0 was employed on the excavation of barren soil for 5.000 h (a few weeks more than a year …
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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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ScienceDirect
BUCKET WHEEL EXCAVATOR Darko Daničić important aspect of excavator design is fatigue and fracture behavior of welded steel structures /6-8/. Welded joints, due to mperfectionsi caused by variable loading and fatigue, as it is the case on open surface mines.
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Numerical analysis of fatigue for the assessment of
3 Numerical analysis of fatigue for the assessment of remaining service life of the ERc 1400-30/7 bucket wheel excavator and analyses of complex dynamic loads carried out on a SchRs 650/5 × 24 Krupp bucket-wheel excavator are presented, as well as the assessment of the service life of vital welded structures of a bucket-wheel excavator
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The structure failure of the discharge boom of bucket
"New Trends in Fatigue and Fracture" (NT2F11) Polignano a Mare, Italy, 3–6 July, 2011 . Darko Daničić 1, Taško Maneski 2. THE STRUCTURE FAILURE OF THE DISCHARGE BOOM OF BUCKET WHEEL EXCAVATOR C 700 S DUE TO DYNAMIC EFFECTS LOM KONSTRUKCIJE STRELE ODLAGA Č A ROTORNOG BAGERA C 700 S USLED DINAMI Č KIH UTICAJA
Get a quote(PDF) Bucket Wheel Excavator Damage by Fatigue …
2. Failure of Bucket Wheel Excavator BWE SchRs 1760, unexpectedly and with no warning catastrophically failed in 2004, after 17 years of regular service, on an open surface mine in Serbia (Fig. 1). Fatigue fracture, initiated in welded joint and developed in lugs of counterweight holder (Fig. 2), followed by final fast fracture, had been the cause.
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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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Bucket Wheel Excavator Damage by Fatigue Fracture – Case
Bucket Wheel Excavator Damage by Fatigue Fracture – Case Study depending on many factors which together with identified high stress concentration on critical points make this case the key to understanding the structure devastation process.Very important how crack initiation is transferred to a lug since final fast fracture has occurred
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Bucket Wheel Excavator Damage by Fatigue Fracture – Case
Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): https://doi.org/10.1016/j.mspr (external link)
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Analysis of the cause of the girth gear tooth fracture
The bucket-wheel excavator, TAKRAF SRs 2000 × 32/5.0 was employed on the excavation of barren soil for 5.000 h (a few weeks more than a year …
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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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Bucket Wheel Excavator Damage by Fatigue Fracture – Case
Related papers. Page number / 6 6
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INTEGRITY ASSESSMENT OF BUCKET WHEEL EXCAVATOR …
assessment of welded joints during exploitation of bucket wheel excavators has been developed. In this paper, a part of non-destructive testing results for the butt welded joints on bucket wheel boom, counterweight boom and discharging boom is presented, prior to the repair of the collapsed bucket wheel excavator SchRs 1760×32/5.
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Investigations of Structural Vibrations Problems of High
subsections. As already mentioned each of the case is considered as individual problem and approaches related to investigations and solutions are different. 2.1 Prevention of resonance vibrations of bucket wheel excavator The first example is to show that advanced analyses can be used at the designing stage to prevent possible resonance vibrations.
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