scholarly journals 5D MODELING OF A CHAIN CONVEYOR WITH THE HELP OF COMPAS-3D SOFTWARE

2012 ◽  
Author(s):  
Evgeniy Kudryavtsev ◽  
◽  
V. Stepanov ◽  
Keyword(s):  
A Chain ◽  
3D Software ◽  
Chain Conveyor

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 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.

Simulation and Optimization of a Chain Conveyor

2009 ◽  
Author(s):  
V.S. Siromiatnikov ◽  
M.G. Ortega ◽  
E. Podzharov ◽  
J.M. García ◽  
L.A. Zamora
Keyword(s):  
Simulation And Optimization ◽  
A Chain ◽  
Chain Conveyor

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.

A chain conveyor machine for calcining limestone

Metallurgist ◽  
1976 ◽  
Vol 20 (1) ◽  
pp. 27-29
Author(s):  
R. S. Bershtein ◽  
D. P. Pritykin ◽  
R. S. Suprunenko
Keyword(s):  
A Chain ◽  
Chain Conveyor

scholarly journals Analysis of impact of longitudinal inclination of a chain conveyor on dynamical phenomena during operation

2017 ◽  
Vol 94 ◽  
pp. 01010
Author(s):  
Kamil Szewerda ◽  
Jerzy Świder ◽  
Krzysztof Herbuś
Keyword(s):  
A Chain ◽  
Chain 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.

Identification and classification of noise sources in a chain conveyor

2002 ◽  
Vol 111 (5) ◽  
pp. 2336
Author(s):  
John P. Homer ◽  
Jeffrey S. Vipperman ◽  
Efrem R. Reeves
Keyword(s):  
Noise Sources ◽  
A Chain ◽  
Chain Conveyor

Observation of Atom Rows in Thorium Pyromellitate Using a Field Emission STEM

1977 ◽  
Vol 35 ◽  
pp. 80-81
Author(s):  
H. Todokoro ◽  
S. Nomura ◽  
T. Komoda
Keyword(s):  
Field Emission ◽  
Amorphous Carbon ◽  
Carbon Film ◽  
Dark Field Image ◽  
Dark Field ◽  
Amorphous Carbon Film ◽  
Atomic Size ◽  
Wide Range ◽  
A Chain

It is interesting to observe polymers at atomic size resolution. Some works have been reported for thorium pyromellitate by using a STEM (1), or a CTEM (2,3). The results showed that this polymer forms a chain in which thorium atoms are arranged. However, the distance between adjacent thorium atoms varies over a wide range (0.4-1.3nm) according to the different authors.The present authors have also observed thorium pyromellitate specimens by means of a field emission STEM, described in reference 4. The specimen was prepared by placing a drop of thorium pyromellitate in 10-3 CH3OH solution onto an amorphous carbon film about 2nm thick. The dark field image is shown in Fig. 1A. Thorium atoms are clearly observed as regular atom rows having a spacing of 0.85nm. This lattice gradually deteriorated by successive observations. The image changed to granular structures, as shown in Fig. 1B, which was taken after four scanning frames.

Time-Resolved Cryo-Electron Microscopy of Oscillating Microtubules

1990 ◽  
Vol 48 (1) ◽  
pp. 502-503
Author(s):  
Eva-Maria Mandelkow ◽  
Ron Milligan
Keyword(s):  
Electron Microscopy ◽  
Dynamic Instability ◽  
Entire Solution ◽  
Reaction Scheme ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
A Chain ◽  
Ray Scattering

Microtubules form part of the cytoskeleton of eukaryotic cells. They are hollow libers of about 25 nm diameter made up of 13 protofilaments, each of which consists of a chain of heterodimers of α-and β-tubulin. Microtubules can be assembled in vitro at 37°C in the presence of GTP which is hydrolyzed during the reaction, and they are disassembled at 4°C. In contrast to most other polymers microtubules show the behavior of “dynamic instability”, i.e. they can switch between phases of growth and phases of shrinkage, even at an overall steady state [1]. In certain conditions an entire solution can be synchronized, leading to autonomous oscillations in the degree of assembly which can be observed by X-ray scattering (Fig. 1), light scattering, or electron microscopy [2-5]. In addition such solutions are capable of generating spontaneous spatial patterns [6].In an earlier study we have analyzed the structure of microtubules and their cold-induced disassembly by cryo-EM [7]. One result was that disassembly takes place by loss of protofilament fragments (tubulin oligomers) which fray apart at the microtubule ends. We also looked at microtubule oscillations by time-resolved X-ray scattering and proposed a reaction scheme [4] which involves a cyclic interconversion of tubulin, microtubules, and oligomers (Fig. 2). The present study was undertaken to answer two questions: (a) What is the nature of the oscillations as seen by time-resolved cryo-EM? (b) Do microtubules disassemble by fraying protofilament fragments during oscillations at 37°C?

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