STUDY OF THE BURIAL OF FILM EDGES USING WORKING ORGANS WITH SPHERICAL DISCS

ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 9 УЎТ. 633.51+631.674 STUDY OF THE BURIAL OF FILM EDGES USING WORKING ORGANS WITH SPHERICAL DISCS Abdulkhayev Kh.G. – Doctor of Technical Sciences, Senior Researcher Namangan State Technical University (NamSTU) Irgashev J.G. – Independent Researcher Scientific Research Institute of Agricultural Mechanization (SRIAM) Аннотация. В статье изложено теоретическое исследование технологического процесса, выполняемого сферическими дисковыми рабочими органами орудия для укладки полиэтиленевой плёнки, разработанные для заделки краев плёнки в почву. Annotation. The article presents a theoretical study of the technological process performed by spherical disk working bodies of a tool for laying a polyethylene film, designed to seal the edges of the film into the soil. Ключевые слова: орудия для укладки пленки, сферические дисковые рабочие органы, края пленки, частицы почвы, расстояние выброса, почвенная насып, процесс заделки. Keywords: tools for laying film, spherical disk working bodies, film edges, soil particles, ejection distance, soil saturation, sealing process. Introduction. The results of previous studies [1–3] have shown that in the process of laying plastic film along the irrigation furrows of cotton interrows, it is advisable to use “spherical discs” as the working organs that open and then cover the trenches for burying the film edges (Fig. 1). In this method, two “oppositely mounted spherical discs” are employed: one pair to open the trenches for ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 10 the film edges, and another to cover the laid film within these trenches (Fig. 2). 1 – furrow opener; 2 – device for bending cotton stalks; toward the adjacent furrow; 3 – spherical discs (right and left) for opening trenches to lay the film edges; 4 – profiled roller; 5 – support wheels; 6 – film edge pressing wheels; 7 – spherical discs (right and left) for covering the film edges; 8 – film perforating wheel; 9 – bobbin (reel) for feeding the film. Figure 1. Structural diagram of the laboratory–field device The soil clods falling from the spherical disc working organs that cover the film edges must satisfy the condition shown in the diagram in Figure 2 to ensure the complete burial of the film edges [4]. ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 11 1 – spherical disc working organ that forms the trench for placing the film edge; 2 – spherical disc working organ that covers (buries) the film edge; Figure 2. Schematic diagram ensuring the burial of the film edge using spherical disc working organs ,sinsin tsd RBL  −= (1) where L – the transverse throwing distance of the soil clods falling from the spherical disc working organ, m; B – the transverse distance between the spherical discs that form and cover the trench for placing the film edges, m. When condition (1) is satisfied, the soil clods thrown by the working organs that cover the film edges fall into the center of the trench where the film edge has been laid. As a result of spreading under the natural angle of repose, a soil mound is formed. Consequently, a stable soil ridge of sufficient height is obtained along the film edge (Fig. 3). The transverse throwing distance of soil clods from the spherical disc working organ is determined by formulating and solving the equation of motion in the plane perpendicular to the direction of movement. This equation has the following form [5, 6]: ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 12 Figure 3. Process of burying the film edge by spherical disc working organs ( )   , cos12 2 g ghRVV VL stdzz y −−++ =  (2) here, Vy and Vz – are the initial components of the absolute velocity t а V of the soil clod at the moment it leaves the spherical disc working organ, projected onto the Y and Z coordinate axes, respectively, in m/s. The values of Vy and Vz in expression (2) are determined using the schematic shown in Figure 4. Accordingly, ( ) ;sincos sinsincoscossin st t к sttst t ny V VV   + ++= (3) tt t nt t кzVVV  coscossin −= , (4) here t n V – the relative velocity of the soil clod at the moment it leaves the spherical disc working organ, m/s; t к V – the translational velocity of the soil clod at the moment it leaves the spherical disc working organ, m/s; φt – φ the limiting value of the angle, i.e., the angle of the soil clod at the moment it leaves the spherical disc working organ; αt – the rotation angle of the soil clod relative to the vertical axis of the disc at the moment it leaves the disc, °. ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 13 Figure 4. Schematic diagram for determining Vу and Vz Based on the results of previously conducted studies (( ) +           −+                + −+ + −= − 0 2 0 2 2 2 2 0 2 0 2 /arcsin2 sin 2sin coscossin 21 4 12cossin )41( 6 0      fR R V f f gR f fgR eV s d s it st s RRf t пsd ; 2 coscos 41 21 2cos 41 6 2 1 2 2 22 2 2 2 2 2 2 2 22                      − − ++ +         + − + + − + s d s dsd s d s iT dt ds R R fR RRR R R V f f gR f RRfg   (5) si t кVV  cos= ; (6) ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 14 s ds tR RR 22 cos − =  ; (7) s d tR R =  sin . (8) Taking these into account, expressions (3) and (4) take the following form ( ) ( ) ;cos2sin 2 1 sinsincos 2 coscos 41 21 2 cos 41 6 sin 2sin coscos sin 41 21 2cossin 41 6 22 2 1 2 2 22 2 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 0 tsist s ds s s d s d s dsd s d s itd t ds s d s i st s RRf y V R RR R R R R fR RRR R R V f f gR f RRfg fR R V f f gR f fgR eV sd        +        − +                       − − +         + − + + + − +           −+                + − + + −= − (9) ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 15 ( ) ( ) .cos 2 cos cos 41 21 2cos 41 6 sin 2sin coscossin 41 21 2 cossin 41 6 sincos 22 2 1 2 2 22 2 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 0 t s ds s d s dsd s d s i tdt ds z d s its t s RRf tiZ R RR R R fR RRR R R V f f gR f RRfg fR R V f f gR f fgR eVV sd        − +                      − − + +         + − + + − + +           −+         + − +     + + −−= − (10) Taking expressions (9) and (10) into account, expression (1)takes the following form: ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 16 ( ) ( )   ( ) ( )   ( ) ( ) ( )    .cos12cos 2 coscos 41 21 2cos 41 6 sin 2sin coscossin 41 21 2cossin 41 6 sincoscos 2 cos cos 41 21 2cos 21 6 sin 2sin cos cossin 41 21 2cossin 41 6 cos2sincos2sin 2 1 sinsincos 2 coscos 41 21 2 cos 21 6 sin 2sin coscossin 41 21 2cossin 41 6 1 2 1 2 22 2 1 2 2 22 2 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 22 2 1 2 2 22 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 22 2 2 2 2 1 2 2 22 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 0 0 0 ghR R RR R R fR RRR R R V f f gR f RRfg f R R V f f gR f fgR e V R RR R R fR RRR R R V f f gR f RRfg fR R V f f gR f fgR e VV R RR R R R R fR RRR R R V f f gR f RRfg fR R V f f gR f fgR e g L stdt s ds s d s dsd s d s itdt ds s d s itst s RRf tsit s ds s d s dsd s d s i tdt ds s d s i tst s RsRf tsitsist s ds d s s d s dsd s d s itd t ds s d s it st s RRf sd d sd +−+      −                      − −  +         + − + + − +           − +            + − + + −− −+      −                      − − + +         + − + + − +           −+ +         + −   + + −− −    +        − +                       − − +         + − + + + − +           −++            +         + − + + −= − − −                   (11) Taking this into account, condition (1) takes the following ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-11 17 ( ) ( )   ( ) ( )   ( ) ( ) ( )    .sinsincos12cos 2 coscos 41 21 2cos 41 6 sin 2sin coscossin 41 21 2cossin 41 6 sincoscos 2 cos cos 41 21 2cos 21 6 sin 2sin cos cossin 41 21 2cossin 41 6 cos2sincos2sin 2 1 sinsincos 2 coscos 41 21 2 cos 21 6 sin 2sin coscossin 41 21 2cossin 41 6 1 2 1 2 22 2 1 2 2 22 2 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 22 2 1 2 2 22 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 22 2 2 2 2 1 2 2 22 2 2 2 2 2 2 22 0 2 0 2 2 2 2 0 2 2 0 2 )/arcsin(2 0 0 0 tsdstdt s ds s d s dsd s d s itdt ds s d s itst s RRf tsit s ds s d s dsd s d s i tdt ds s d s i tst s RsRf tsitsist s ds d s s d s dsd s d s itd t ds s d s it st s RRf RBghR R RR R R fR RRR R R V f f gR f RRfg f R R V f f gR f fgR e V R RR R R fR RRR R R V f f gR f RRfg fR R V f f gR f fgR e VV R RR R R R R fR RRR R R V f f gR f RRfg fR R V f f gR f fgR e g sd d sd                   −=+−+      −                      − −  +         + − + + − +           − +            + − + + −− −+      −                      − − + +         + − + + − +           −+ +         + −   + + −− −    +        − +                       − − +         + − + + + − +           −++            +         + − + + − − − − (12) Analysis of this expression shows that the quality and adequacy of burying the film edges are primarily ensured by the radius (diameter) of the spherical disc working organ, its curvature radius,