Тошкент ирригация ва қишлоқ ХЎжалигини механизациялаш муҳандислари институти

SCIENTIFIC COUNCIL TO AWARDING OF THE SCIENTIFIC
DEGREES DSc.27.06.2017.T.10.01 AT THE TASHKENT INSTITUTE OF 
IRRIGATION AND AGRICULTURAL MECHANIZATION ENGINEERS 
SCIENTIFIC-RESEARCH INSTITUTE OF
AGRICULTURAL MECHANIZATION 
TUKHTABAYEV MIRZOKHID AKHMADJANOVICH 
TIRE SELECTION FOR COTTON-CULTIVATOR TRACTOR BY 
COMPACTION IMPACT ON SOIL 
05.07.01 – Agricultural and meliorative machinery. Mechanization 
of agricultural and reclamation work 
 
 
 
 
 
DISSERTATION ABSTRACT OF
DOCTOR OF PHILOSOPHY (PhD) ON TECHNICAL SCIENCES 
 
Tashkent – 2019 

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INTRODUCTION (abstract of PhD thesis) 
The aim of the research work is to selecting type of optimal tires for cotton-
growing tractor and reduce soil compaction based on study their effect on it. 
The object of the study is the soil of cotton row spacing, the tires of driving 
wheels of cotton-cultivation tractor, non-deformable solid base and deformable soil 
condition on which the movement of tires. 
The scientific novelty of the research is as follows: 
method for selecting tires was developed, taking into account the tractor 
wheel formulas, agrotechnical requirements for tires, and the impact they have on 
the soil; 
the influence of the tire of cotton-cultivation tractor on soil compaction and 
tracks depth in it is determined in terms of the speed of aggregate movement and 
the tire inflation pressure; 
rational type of tire for cotton-growing tractors substantiated with 
consideration for influence of the width of tire profile and inflation tire pressure on 
compaction of soil; 
analytical dependences were obtained to determine the indicators impacts of 
cotton-growing tractor tire on soil and their optimal parameters; 
determined depending on speed of the aggregate, as well as parameters of tire 
and soil properties, the impact of selected tire of the established cotton tractor on 
the soil;