Vol 81, No 6 (2014)
- Year: 2014
- Articles: 17
- URL: https://journals.rcsi.science/0321-4443/issue/view/3625
Articles
Effective use of hydrogen power resources in the power supply structure of agroindustrial complex
Abstract
Results of applicability searches for alternative hydrogen-based energy sources in diesels for mobile agricultural machinery were analyzed. Potential possibility that selected hydrogen power resources will be really introduced in the power consumption structure of agroindustrial complex in the coming years is substantiated.
Traktory i sel hozmashiny. 2014;81(6):3-7
3-7
Application of natural gas and recirculation on 4Ч 11,0/12,5 tractor diesel
Abstract
Experimental testing results of Д-240 diesel operating on compressed natural gas with exhaust gas recirculation are presented. Improvement opportunity of diesel ecological indicators, in particular decrease of nitrogen oxides level in exhaust gases, diesel fuel saving, rise of effective indices is determined.
Traktory i sel hozmashiny. 2014;81(6):7-9
7-9
Substantiation of design of elastic drive shaft of a vibratory crusher
Abstract
Different designs of elastic drive shafts of conic vibratory crushers distinguishing by method of affixment and section are considered. Substantiation of the shaft design is carried out by flexibility, which defines the length. The best results are obtained for spring drive shafts.
Traktory i sel hozmashiny. 2014;81(6):9-11
9-11
11-13
13-14
New equation of a wheeled vehicle moving
Abstract
Conclusions of generally accepted and recently proposed equations of wheeled vehicle (car, tractor, motorcycle and other) motion are given. It is shown that a necessary condition for correctness of equation of motion is to reduce forces and moments acting on a vehicle to contact of driven wheels with road.
Traktory i sel hozmashiny. 2014;81(6):15-18
15-18
Diagnostics of resource structural parameters of geared transmissions
Abstract
Identification method for diagnostics of resource structural parameters of gearing of transmissions and reducers of agricultural machinery is suggested. The method is based on analysis of deformation of distribution density and correlation function of amplitudes of vibroacoustic impulses or impulses of shaft angular velocity on exceedance by mean value or by dispersion (following along with tooth changeover periods) of level corresponding to occurrence of defects and critical operating mode. Application of this method is investigated.
Traktory i sel hozmashiny. 2014;81(6):18-23
18-23
Mathematical model of a screw moldboard plough operation
Abstract
Mathematical model, algorithm and computer model of undercutting and turning of soil layer by a screw moldboard of share plough body are presented. These models are based on predetermined soil layer motion law and dynamical interaction between layer and ploughshare, breast and wing of moldboard, surfaces of which are described by unstable functions.
Traktory i sel hozmashiny. 2014;81(6):23-27
23-27
Flotation of all-wheel drive vehicle on snowy wild land
Abstract
Experimental results of flotation of GAZ-66-40, KamAZ-4350, Ural-4320-30 and Ural-5323-20 all-wheel drive vehicles on snowy wild land are given. Comparative assessment of flotation is carried out on basic indicators such as specific drawbar force, specific force of resistance to towing of car, maximal speed of rectilinear uniform motion without towed load and minimal car turning radius without flotation loss.
Traktory i sel hozmashiny. 2014;81(6):27-29
27-29
30-32
Sealing components of sowing device of overpressure
Abstract
Design and operational principles of pneumatic sowing device of overpressure with sealing of seed chamber are described. Process of seed placement into transport channel is researched theoretically. Conditions of secured pushing out of superfluous seeds without jamming and damages are determined. Shape of protuberances of seeding plate is specified.
Traktory i sel hozmashiny. 2014;81(6):32-35
32-35
Substantiation of efficiency of segmentary screen use in hammer crushers of closed type
Abstract
Main disadvantages of hammer crushers of closed type equipped with cylindrical screen, causes of disadvantages and measures of their removal are specified. The scheme of a crushing device equipped with segmentary screen and comparative assessment of working process of hammer crushers with cylindrical screen and segmentary one are presented.
Traktory i sel hozmashiny. 2014;81(6):35-38
35-38
39-41
Assessment of limiting state of working organs of soil-cultivating cutters
Abstract
Problem of limiting state determination for working organs of driven soil cultivating cutters is considered, that is necessary for reliability assessment during acceptance inspection tests. It is suggested to use 3D-scanning with step by step measuring program for accurate and quantitative determination of cutting working organs wear.
Traktory i sel hozmashiny. 2014;81(6):41-45
41-45
46-47
Basic measures allowing to increase the energy efficiency of electric equipment in agroindustrial complex
Abstract
Measures increasing energy efficiency of electric equipment in the agroindustrial complex are considered, namely applicability of energy efficient electric motors, frequency regulation and special electric motors in an electric drive of agricultural machinery.
Traktory i sel hozmashiny. 2014;81(6):48-51
48-51
51-52