卷 80, 编号 8 (2013)
- 年: 2013
- ##issue.datePublished##: 15.08.2013
- 文章: 21
- URL: https://journals.eco-vector.com/0321-4443/issue/view/3635
Articles
On agricultural materials’ properties taken into consideration during new machinery development
摘要
Kinds of plant materials are examined, as well as their physical-mechanical properties and deformations under the impact of agricultural machinery working organs.
Tractors and Agricultural Machinery. 2013;80(8):3-4
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Bases of the theory of mechanical energy functioning in technological machines
摘要
Basic principles of the theory of mechanical energy functioning in technological machines are suggested. Equations of force and speed factors are composed on the base of analytical mechanics. Calculated formulas of active and reactive powers for gears with elastic and inertia elements are deduced.
Tractors and Agricultural Machinery. 2013;80(8):5-8
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A soil cultivating roller
摘要
Structure and operation principle of an improved soil cultivating roller are given. Interaction between teeth and perforations on roller plates and cultivated soil prevents the displacement of soil particles to one of roller side faces. It ensures the uniformity of both cultivation depth and soil density, which are necessary for further high-quality sowing.
Tractors and Agricultural Machinery. 2013;80(8):9-10
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Parameters of a sowing device for germinated pumpkin seeds
摘要
Results of experimental testing of a conveyer sowing device are stated.
Tractors and Agricultural Machinery. 2013;80(8):10-11
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Duplex electromechanical transmission with automatic control system
摘要
Electromechanical transmission with automatic module control system including power and technological channels is suggested. Algorithm for resistance determination during segmentary-finger mover operation taking into account power expenditures for driving moment and angular velocity fluctuations is given. Operating ranges of mobile power module with mover mechanical drive and standard Т-25А tractor with КС-2,1 mover were compared.
Tractors and Agricultural Machinery. 2013;80(8):12-13
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Choosing of class and characteristics of a modern tractor transmission
摘要
Trends of tractor transmissions development are examined, their features are analyzed. Advices on choice of transmission class and characteristics are given.
Tractors and Agricultural Machinery. 2013;80(8):14-19
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The problem of synthesis of control algorithms for gear shift using electric-hydraulic and electronic devices
摘要
Approaches to the problem of synthesis of control algorithms for gear shift using electric-hydraulic and electronic devices were examined. It is noted that well-timed shift should increase tractor velocity and a “successful” algorithm should not worsen its usability. Possible criteria were analyzed.
Tractors and Agricultural Machinery. 2013;80(8):20
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Dynamic loading of load-bearing parts of crawled tractor transmission during the operation in «acceleration – stopping» mode
摘要
Procedure and equipment for the testing of crawled machines’ load-bearing gears in «acceleration – stopping» mode are developed. Characteristics of bench dynamic model are maximal close to the characteristics of tractor dynamic system.
Tractors and Agricultural Machinery. 2013;80(8):21-23
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Performance and power inputs of machine and tractor aggregate
摘要
Results of analytical investigation of gear reduction rate and transmissive sequence choice for К-744Р-05 tractor transmission are presented. Regular transmission is estimated. Two methods of hyperbolic curve division into segments are examined, taking into account that product of tangential tractive effort and velocity is the constant and condition of an obligatory reserve of engine power for temporary overloads overcoming is fulfilled. Specified gear boxes types for different machine and tractor aggregates are recommended.
Tractors and Agricultural Machinery. 2013;80(8):23-28
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Some features of reduction rates determination of geared part of agricultural tractor transmission with hydrodynamic gear
摘要
Procedure of determination of reduction rate of geared part of agricultural tractor transmission with hydrodymamic gear is suggested.
Tractors and Agricultural Machinery. 2013;80(8):28-30
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Water and fuel combustion in internal combustion engine
摘要
Some well-known information about internal combustion engines impact on fuel and air as well as operation results of a new developed steam generator mounted on МТЗ-82 tractor are given.
Tractors and Agricultural Machinery. 2013;80(8):30-32
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Model of contact surface topography of a rider interfitted with elastomer seal
摘要
Preconditions, substantiations and results of the model choice of contact surface of a rider interfitted with rubber seal are presented. It was demonstrated that approximation of real roughness by sinusoidal curve is the most reliable.
Tractors and Agricultural Machinery. 2013;80(8):32-34
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Estimation of arrangement of a system containing two observation mirrors for object control
摘要
Theory of slope angles estimation for a system containing two observation mirrors intended for the control of mechanized process and environment objects by mobile machine driver is described.
Tractors and Agricultural Machinery. 2013;80(8):34-36
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Shape of curvilinear separating surfaces of a gravitational separator
摘要
Mathematical model of movement of grain pile components along the curvilinear separating surface of gravitational separator is presented. This model takes into account the effect of mass variation.
Tractors and Agricultural Machinery. 2013;80(8):36-37
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Characteristics and operational modes of a drum potato sorter
摘要
Bases for the estimation of characteristics and operational modes of a drum potato sorter are given, as well as recommendations on tuber damages minimization.
Tractors and Agricultural Machinery. 2013;80(8):38-39
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Power consumption of soil rotary tillage with small-size cutters having driving wheels
摘要
Power inputs were analyzed and equations of power consumption of soil rotary tillage with the use of self-propelled small-size soil cultivating cutters with road wheels were obtained depending on soil conditions, operation modes and machine structural features.
Tractors and Agricultural Machinery. 2013;80(8):39-41
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Modeling of spring tines of combined cultivators
摘要
Working organs of combined cultivators on spring tines are examined. Parameters of spring tines’ stressedly-deformed state were obtained on the base of loads modeling. Rigidity adjustment of the tines is suggested to use them on different soils.
Tractors and Agricultural Machinery. 2013;80(8):41-44
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Durability of end seal of a centrifugal pump with nanoceramic composite coatings produced by means of micro-arc oxidation technology
摘要
A program-technique and testing results of end seals coated with nanostructured material and positioned on centrifugal pumps of diesel cooling system are presented.
Tractors and Agricultural Machinery. 2013;80(8):44-47
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Influence of acceptable wearing of a part on its reliability parameters
摘要
The proposed technique permits to determine the minimal replacement parts consumption, to decrease expenditures on them, to regulate consumption in repair services, to reduce the probability of parts failure and the cost of machine maintenance.
Tractors and Agricultural Machinery. 2013;80(8):47-50
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Forecasting of parametric reliability of technological equipment units by output accuracy parameters
摘要
Diagrams of forecasting and reliability margin of technological equipment as well as diagram of parametric failure on accuracy index are presented. The algorithm is developed and its flow chart for parametric reliability forecasting by the Monte-Carlo method is formed.
Tractors and Agricultural Machinery. 2013;80(8):51-53
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Bibliometric analysis of domestic agri-engineering journals
摘要
Results of bibliometric analysis of domestic agri-engineering journals on the base of Russian Science Citation Index database are considered.
Tractors and Agricultural Machinery. 2013;80(8):54-56
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