Computer Aided Dynamic Analysis of the Drive of a Chain Conveyor

2004 ◽  
Author(s):  
Jayant P. Modak ◽  
Girish D. Mehta ◽  
Pramod N. Belkhode
Keyword(s):  
Dynamic Analysis ◽  
Rolling Resistance ◽  
Belt Conveyor ◽  
Load Torque ◽  
Representative Case ◽  
Similar Work ◽  
A Chain ◽  
Chain Conveyor ◽  
Bearing Friction

Literature indicates availability of dynamic analysis of a drive shaft of a chain conveyor in a limited way. Relations for estimation of a conveyor chain pull to overcome, (i) Rolling resistance of the track, (ii) Tail sprocket and drive sprocket shaft bearing friction resistances, (iii) Drive and tail sprocket chain binding resistances and (iv) Impact loading on the chain have been only derived [1,2]. However, further extension to deduce the load torque demand on drive sprocket during one articulation of the chain is not seen derived in the literature. This paper details this, followed by digital computer simulation including illustration of application of this new procedure to a representative case study. Work on the same lines is not much seen in the literature. However, similar work by Harrison [4] is done for the belt conveyor.

Design and Manufacturing of a Non-Standard Chain Parts for a Chain Conveyor for a Harvest Shallot: A Case Study

2020 ◽  
Vol 902 ◽  
pp. 91-96
Author(s):  
Cao Hung Phi ◽  
Nguyen Thai Van ◽  
Le Hong Ky
Keyword(s):  
Complete Case ◽  
Conveyor System ◽  
Design Procedures ◽  
Design And Manufacturing ◽  
Final Design ◽  
A Chain ◽  
Chain Conveyor ◽  
Economic Considerations ◽  
Selection Of

This paper presents a complete case study for designing and manufacturing chain parts for chain conveyor use for a harvest shallot for a real. The process of harvesting shallot in Vietnam is being done manually. Mechanization, automation of the harvest process has been demanded by farmers. In the harvest shallot equipment, the chain conveyor system is used to handling the desired orbit to the packing position. Shallots are uneven in size, distributed in a certain size range. Chain conveyor systems with the chain was non-standardized were choiced. Therefore, a complete design is required to meet requirement. The design procedures are: (1) calculation of the expected loads that exert on the chain during operation, (2) selection of materials, (3) designing the different parts of the chain taking into account safety, assembly process and economic considerations. The final design was justified and validated. The chain of chain conveyor system is working properly and safety under real conditions.

‘A Routh O’ Auld Nick-Nackets’ – the antiquarian collection of John Rae

2015 ◽  
Vol 36-37 (1) ◽  
pp. 163-183
Author(s):  
Paul Taylor
Keyword(s):  
United States ◽  
Nineteenth Century ◽  
Social Context ◽  
Moral Education ◽  
The United States ◽  
Representative Case ◽  
National Museums ◽  
The Individual ◽  
The University

John Rae, a Scottish antiquarian collector and spirit merchant, played a highly prominent role in the local natural history societies and exhibitions of nineteenth-century Aberdeen. While he modestly described his collection of archaeological lithics and other artefacts, principally drawn from Aberdeenshire but including some items from as far afield as the United States, as a mere ‘routh o’ auld nick-nackets' (abundance of old knick-knacks), a contemporary singled it out as ‘the best known in private hands' (Daily Free Press 4/5/91). After Rae's death, Glasgow Museums, National Museums Scotland, the University of Aberdeen Museum and the Pitt Rivers Museum in Oxford, as well as numerous individual private collectors, purchased items from the collection. Making use of historical and archive materials to explore the individual biography of Rae and his collection, this article examines how Rae's collecting and other antiquarian activities represent and mirror wider developments in both the ‘amateur’ antiquarianism carried out by Rae and his fellow collectors for reasons of self-improvement and moral education, and the ‘professional’ antiquarianism of the museums which purchased his artefacts. Considered in its wider nineteenth-century context, this is a representative case study of the early development of archaeology in the wider intellectual, scientific and social context of the era.

CALCULATION OF THE CHAIN DRIVE OF A MECHANIZED CHAMBER-CHAIN DRYING PLANT FOR DRYING MELON FRUITS

2021 ◽  
Vol 4 (1) ◽  
pp. 29-35
Author(s):  
Nafisa Saidho’jaeva ◽  
Keyword(s):  
Heat Exchanger ◽  
Chain Drive ◽  
Utility Model ◽  
Load Bearing ◽  
Air Heater ◽  
Load Carrying ◽  
Chain Transmission ◽  
A Chain ◽  
Chain Conveyor

The article deals with the calculation of the drive and chain transmission of the newly created mechanized drying plant for drying melon slices. The essence of the utility model: the machine contains a horizontal tunnel chamber, inside which is mounted a chain conveyor with driving and driven sprockets, load-carrying elements, the IR emitters with reflectors on top of the camera mounted electric air heater, fan, an annular heat exchanger equipped with inlet and outlet nozzles of the drying agent. On the branches of the conveyor chain, lodgments with folding clamps are mounted, on which load-bearing elements are fixed, which are used as wooden poles. The calculation of the drive and chain transmission of the drying plant conveyor was carried out according to the existing method according to the scheme shown in the figure. Thus, the main parameters of the drive and chain transmission parts of the mechanized chamber-chain drying plant for drying melon fruits were determined by calculation

scholarly journals Investigation on indentation rolling resistance of belt conveyor based on Hertz contact theory compared with one-dimensional Winkler foundation

2018 ◽  
Vol 10 (7) ◽  
pp. 168781401878393 ◽  
Author(s):  
Lu Yan
Keyword(s):  
Rolling Resistance ◽  
Contact Theory ◽  
Theoretical Formula ◽  
Winkler Foundation ◽  
Hertz Contact ◽  
Belt Conveyor ◽  
One Dimensional ◽  
Hertz Contact Theory ◽  
Viscoelastic Theory ◽  
Indentation Rolling Resistance

Based on Hertz contact theory and one-dimensional Winkler foundation combination with viscoelastic theory, the author derived theoretical formulas of indentation rolling resistance, respectively. Using the laboratorial apparatus of indentation rolling resistance, the author mainly concentrates on the error analysis about two kinds of theoretical formula which bear on indentation rolling resistance compared with experimental result. The reason why author employs Hertz contact theory to discuss indentation rolling resistance is that indentation rolling resistance is a sort of contact resistance. As a result, Hertz contact theory is generally applicable to study it. On the other hand, because conveyor belt has viscoelastic property, it is appropriate to use viscoelastic theory by the aid of three-parameter Maxwell viscoelastic model combination with one-dimensional Winkler foundation. Ultimately, this article infers that theoretical formula based on the Hertz contact is brief and clear compared with one-dimensional Winkler foundation in principle. However, it is noticeable that when the belt is at high speed, the reliability of formula based on Hertz theory has decreased obviously. This conclusion can give a beneficial reference for the energy saving of belt conveyor.

scholarly journals UJI KINERJA DAYA DUKUNG INDIVIDU PONDASI TIANG DENGAN ALAT INSTRUMENT KONTROL PILE DRIVE ANALYZER TEST DI REFINERY UNIT V BALIKPAPAN

2018 ◽  
Vol 1 (2) ◽  
pp. 69
Author(s):  
Sulardi Sulardi
Keyword(s):  
Carrying Capacity ◽  
Research Method ◽  
Basic Principles ◽  
Similar Work ◽  
Control Instrument ◽  
Foundation Pile ◽  
Implementation Method ◽  
Pile Drive ◽  
Test Control

Tujuan penelitian adalah untuk memberikan gambaran rinsip dasar penggunaan alat instrumen kontrol pile drive analyzer dan metode pelaksanaanya pada pengujian daya dukung tiang pancang pondasi tangki kilang Pertamina Unit V Balikpapan. Metode penelitian yang digunakan pada penelitian adalah metode penelitian terapan (penelitian terpakai) dengan metode pendekatan studi kasus unconfidence level terhadap akurasi hasil pemancangan pondasi tiang. Penelitian ini adalah sekaligus technical notes succes story penggunaan alat instrument kontrol PDA test dilingkungan kilang PT. Pertamina RU V Balikpapan. Hasil penelitian menunjukan bahwa berdasarkan hasil uji dengan alat instrumen kontrol PDA test dapat memberikan akurasi yang baik pada daya dukung individu tiang pancang pondasi tangki sehingga tidak ada keraguan terhadap kriteria penerimaan bangunan tangki nantinya. Hasil penelitian ini merekomendasikan bahwa alat instrumen kontrol PDA cocok dan aman digunakan diarea kilang dan dapat dipergunakan untuk pekerjaan sejenis di unit kerja PT. Pertamina yang lain. Kata kunci: Alat instrumen kontrol, pile drive analyzer, daya dukung individu.The aim of the study was to provide an overview of the basic principles of the use of a pile drive analyzer control instrument and its implementation method in testing the carrying capacity of Pertamina Refinery Tank Unit Balikpapan V tank  foundation pile. The research method used in this research is applied research method with the method of using an unconfidence level case study on the accuracy of the results of pile foundation erection. This study is at the same time succesful story technical notes using PDA test control instrument in PT. Pertamina RU V Balikpapan. The results showed that based on the results of tests with PDA test control instruments can provide good accuracy on the carrying capacity of individual tank foundation piles so that there is no doubt about the acceptance criteria of tank building later. The results of this study recommend that PDA control instruments are suitable and safe to use in refinery areas and can be used for similar work in PT. Pertamina other. Keywords: Control instrument, pile drive analyzer, individual bearing capacity.

scholarly journals Development and Performance Evaluation of a Small-scale Maize Harvester for Developing Countries

2020 ◽  
pp. 144-156
Author(s):  
Julus H. Vodounnou ◽  
Emmanuel A. Ajav ◽  
Gontrand C. Bagan ◽  
Victorin K. Chegnimonhan
Keyword(s):  
Developing Countries ◽  
Performance Evaluation ◽  
Engine Speed ◽  
Small Scale ◽  
Drive Power ◽  
Smallholder Farms ◽  
Testing Experiment ◽  
And Performance ◽  
A Chain ◽  
Chain Conveyor

A small-scale maize harvester was designed and fabricated for developing countries and is composed of a harvester header, a chain conveyor, a drive power unit and a five-wheel tricycle. Fabrication of components was made and assembling of the devices on the tricycle was done. The performance evaluation of the small-scale maize harvester was done at 15% kernels moisture content (wet basis). Three rotational speeds of the engine, 1347, 1521 and 1937 rpm were used, while the forward velocity of the harvester was kept at an average of 0.617 km.hr-1. The testing experiment revealed significant effect of physical properties of maize (p<0,05). The highest machine capacity was obtained at 0.05 ha.hr-1, while the highest driving efficiency was 97.30% and the highest picking and conveying efficiencies were 84.11% and 98.21%, respectively. However, it was observed that the machine noise level decreased with increase in engine speed. Also, the engine speed affected both picking and conveying efficiencies. The designed machine is found suitable for most smallholder farms.

scholarly journals A Case Study of Interactive Teaching in a Listening Session at a Language Institute

2019 ◽  
Vol 2 (1) ◽  
pp. 89-98
Author(s):  
Hilma Safitri
Keyword(s):  
Data Collection ◽  
Qualitative Study ◽  
Group Work ◽  
Classroom Interaction ◽  
Interaction Patterns ◽  
Listening Skills ◽  
Interactive Teaching ◽  
Pair Group ◽  
A Chain

Improving listening skills is one of urgent problems in education. Insufficiency of students’ linguistics and non-linguistics knowledge or background knowledge to comprehend ideas during listening could be solved by providing them with interactive tasks since to learn to listen is to learn to respond and to continue a chain of listening and responding. This study aims to uncover interactive teaching in a listening session at LBPP-LIA Kalimalang Jakarta. The subjects of the study were the students of Intermediate 3 together with their teacher. The object of the study were the aspects covered by classroom interaction: student-student and student-teacher interactions. Data collection consisted of audio-recording of the spoken exchange and note taking of all observed activities during the listening session.  As a qualitative study, the findings were described in terms of words. The result showed the teacher seemed to be aware that interactive tasks in pair/group work would benefit the students. The interaction patterns taken place among participants involved in a discussion reflected an interactive teaching. However, the teacher should have developed his roles. He needed to vary his techniques in maintaining the interaction, therefore, the students were motivated to volunteer information, comment, or questions.

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