卷 81, 编号 6 (2014)
- 年: 2014
- ##issue.datePublished##: 15.06.2014
- 文章: 17
- URL: https://journals.eco-vector.com/0321-4443/issue/view/3625
Articles
Effective use of hydrogen power resources in the power supply structure of agroindustrial complex
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):3-7
3-7
Application of natural gas and recirculation on 4Ч 11,0/12,5 tractor diesel
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):7-9
7-9
Substantiation of design of elastic drive shaft of a vibratory crusher
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):9-11
9-11
Dual-fuel system for tractor diesel with multi-stage heating
摘要
The design of dual-fuel system for tractor diesel with multi-stage heating is described. It allows using pure rape oil as a fuel in a diesel engine.
Tractors and Agricultural Machinery. 2014;81(6):11-13
11-13
Modernization of tuberous roots dry cleaning method
摘要
The method allowing to increase efficiency of tuberous roots dry cleaning was developed.
Tractors and Agricultural Machinery. 2014;81(6):13-14
13-14
New equation of a wheeled vehicle moving
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):15-18
15-18
Diagnostics of resource structural parameters of geared transmissions
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):18-23
18-23
Mathematical model of a screw moldboard plough operation
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):23-27
23-27
Flotation of all-wheel drive vehicle on snowy wild land
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):27-29
27-29
Soil compaction by track and wheel tractor
摘要
Alterations of physical and mechanical properties of soil after impact of a track and wheel tractor in comparison with a wheel tractor are considered.
Tractors and Agricultural Machinery. 2014;81(6):30-32
30-32
Sealing components of sowing device of overpressure
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):32-35
32-35
Substantiation of efficiency of segmentary screen use in hammer crushers of closed type
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):35-38
35-38
High-pressure mixed-flow fan of tractor diesel cooling system
摘要
Parameters of high-pressure mixed-flow fan for liquid-cooling system of tractor diesel of 115 kW power are determined.
Tractors and Agricultural Machinery. 2014;81(6):39-41
39-41
Assessment of limiting state of working organs of soil-cultivating cutters
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):41-45
41-45
Using the out of service leaf springs for ploughshares restoration
摘要
Applicability of out of service leaf springs of 60С2 steel as material of compensating element for ploughshares restoration is shown.
Tractors and Agricultural Machinery. 2014;81(6):46-47
46-47
Basic measures allowing to increase the energy efficiency of electric equipment in agroindustrial complex
摘要
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.
Tractors and Agricultural Machinery. 2014;81(6):48-51
48-51
Machine and tractor fleet maintenance in agricultural enterprises of Zabaykalsky Krai
摘要
Technical equipment of agricultural enterprises of Zabaykalsky Krai and machines maintenance level are analyzed. Comparative characteristics of loading level of tractors and grain harvesters in spring-summer period are given.
Tractors and Agricultural Machinery. 2014;81(6):51-52
51-52
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