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(jj II < fill i Jfl "TH -1 ©HT 1 - t_W JT |T1 I r^g) DEFINITION OF MOVEMENT LAWS OF WINGING AND MILLING DRUMS OF THE UNIT FOR PROCESSING OF SOIL AND CROPS OF SEEDS Djuraev Anvar Djuravich, Xolmirzaev Javlonbek Zakirjanovich, Turdaliyev Voxid Maxsudovich, Akbarov Ilhom Gulomjanovich, Oosimov Azam Adxamjonovich, The Namangan engineering-pedagogical institute, Namagang E-mail: ilxomjon1980@inbox. uz
Abstract. In article the settlement scheme and mathematical model of five-mass system of the combined unit for processing of soil and crops of seeds are resulted. On the basis of numerical decisions of system of the differential equations laws of movement milling and wing unit shaft are received, graphic dependences of change of parametres of the combined unit for processing of soil and crops of seeds are defined and recommendations for choice rational values of parametres and modes of movement of working bodies are given.
Keywords. The combined unit, the settlement scheme, soil, processing, the differential equations, movement laws milling, wing a drum, seeds, angular speed, the moment.
In the basic economy in crops, the structure of the top layer of earth makes difficultly crushing lumps (diameter of 5 sm and more). This circumstance negatively influences to preparation of soil and quality of crops of small seeds of cultures, and, also in further and their shoots.
We develop an effective design of the combined unit for preseeding processing of soil and crops of small seeds vegetable cultures [1]. The kinematic scheme of the combined unit is resulted fig. 1, and the settlement scheme five mass machine units resulted fig.2.
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Fig. 1 The kinematic scheme of the combined unit: 1-kardan; 2-conic reducer; 3, 7, 9, 11-chain drivers; 4, 6-shaft; 5-cylindrical gear wheel; 8-winging drum; 10-milling drum; 12-basic wheel; 13-shaft of the bobbin sowing device; 14-skating rink
MuMfl M
6,
J2,cpz
M
/4
Mfs +Mm
I —B>- II
wwv-
_ c,
k/vwv
a
IV —ED— V
vww
J 4, (Pa
J5 • %
Mh +MW
-ffl—
u
k/vwv
23 C
3 J3,<P>
Fig. 2 The settlement scheme of the five-mass machine unit
According to fig.2 the system of the differential equations, describing movement of weights of the machine unit of the car for processing of soil and crops of
«
seeds [2] is deduced:
m l = Mvom - k
dp dt
[( Jrl + JKl )u 2 + Jr 2 + Jal + JK 2 ]•= M ! - Мf ! -
K21 dt2 mJJ
dt
12
dt
[(Jr3 + Ja2 + Jg1 + Ja3 )+ ( Jr4 + Ja5 + Jg2 )"2 ] • ^^T = U12C1 (P - U12^2 )
- C2 (P2 - U23P3 )- C2 (P2 - U24P4 )+ 61U12
dq^Tj dP2 U12
dt
dt
—
rr dp3 ^ J dp2 U2ip j-(M71 + Mn );
^dp2 dp
-2 - U dPl dt 23 dt
dt
(Jw + Jr5 + Ja4 )• dippL = U23C2 (P2 - U23P3 ) + U
dt
Ja6 P4 = U24C2 (P2 - U24P4 )" C
' 23B2
dt
U
23
dt2
+ U2462
f f
P4 V v
r cosp +Ap )
r cos p
^ dp2 TT dpA
-U
v dt 24 dt y d 2p
(Jm + Jr6 + Ja6 }
- e
dp
4
dt
r cos(p + Ap )
dt y
\ \ P5
y y
\ 7 A
( Mf + Mw );
■y s ,
r2 cos(P22 + AP2)
+
dt2
r2 cos(p2 + Ap ) ^
r1cosP1 y
r cos p
v r cos p
\ r r pa
dp
y dt y
- M
C
y
V v
r2cos(p2 +AP2)
r cosp
f 4
\ \
P5 yy
+
dp4 dt
r2 cos(p2 + Ap )
dp
y dt y
(Mf 5 + Mm )
(1)
r cos p
Where, Mvom -moment on shaft VОМ; Mf1,Mf2,Mf3,Mf4,Mf5 - the moments of forces a friction in corresponding shaft; Mw,Mm - the resistance moments on shaft
wing and milling drums; (,(2,(3,(4,(5 - angular movings of weights of the machine unit; Jrn Jr2, Jr3, Jr4, Jr5, Jr6 - the moments of inertia of rotating shaft; J, Jkl - the
moments of inertia of cogwheels of a conic reducer; Jai, Jai, Jai, JaA, Jai, J^ - the
moments of inertia of asterisks of chain transfers accordingly; Jw -the moment inertia
wing a drum; Jm - the moment of inertia of a milling drum; JgX, Jg2 - the moments of
inertia of cogwheels of a cylindrical gearing tooth; up -transfer relation of a conic
reducer; Cx,C3,C4,C5 - factors rigidity of chain transfers; e1,e3,e4,e5 - factors
viscosity chain transfers; up, u12, u23, u24 - the transfer the relation between rotating in
weights accordingly.
The decision of system (1) is made on the type COMPUTER «Pentium-IV». The problem dared with application of numerical method Runge-Kutta by means of the mathematical program «Math Cad». The decision was carried out at following numerical values of parameters: mvom= 1061,6 Nm, mf 1= 0,7848 Nm, mf2= 0,233 Nm,
Mf3= 1,04 Nm, Mf4= 1,36 Nm, mf5= 0,7848 Nm, mw= 41 Nm, mm= 76,9 Nm,
J = 0,0006 kgm2, Ja2 = 0,00117 kgm2, J3 = 0,000268 kgm2, J4 = 0,00118 kgm2, Ja5 = 0,00086 kgm2, Jai = 0,00187 kgm2, Jrl = 0,0088 kgm2, Jr2 = 0,0064
kgm2, Jr3 = 0,0016 kgm2, Jr4 = 0,0016 kgm2, J5 = 0,00026 kgm2, Jr6 = 0,00056
kgm2, JKl = 0,0064 kgm2, JK2 = 0,0073 kgm2, JM = 0,0375 kgm2, J$ = 0,11°88 kgm2, Jg1 = 0,0027 kgm2, Jg2 = 0,0027 kgm2, up = 1,25 ui2 = 1,2 U23 = 1,3 ,
U24 = 1,2
Based on the decision of system (1) laws of change of angular speeds <Pm ,(Pw
and moments Mm, Mw corresponding shaft milling and wing drums (fig. 3) are received. The analysis and processing of the received laws receive graphic
dependences of change of scope of fluctuations A(p , AM , A(p and Ammm. From the
received dependences it is visible, that with increase in resistance from processed soil considerably increases average values of scope of fluctuations amm , amw , A(m and
A(pw on nonlinear law. But, thus increase amm and A(m will be considerable rather
than increase amw and A(w . This results from the fact that external loading directly operates on a milling drum. So, at increase in resistance of soil from 20 Nm to 105 Nm
è
AMm increases from 8,2 Nm to 20,4 Nm, and AMw increases from 4,1 Nm to 13,1
Nm. Accordingly A(m increases from 1,18 1/s to 2,26 1/s, and A( fr. 0,54 1/s to 1,38 1/s.
In fig.5. the laws of change (,( and mm, mw changes of loading from sowing seeds with the mixed loosened soil are presented. The received graphic dependences are resulted on fig. 6. The analysis of the received graphic dependences shows, that with increase in loading from sowing seeds with the crushed soil leads to
reduction of angular speeds ( and (w on nonlinear law (curves 1, 2 see, fig. 6).
Thus change (w and mw will be intensive, rather than changes (m and mm . So, at
increase of the moment of resistance from sowing seeds and the crushed soil from 17 Nm to 76 Nm ( decreases from 21 1/s to 10 1/s, and (m from 31,6 1/s to 20,61/s.
Thus the moments on shaft increase, mw from 39 Nm to 66 Nanometers, and mm 61 Nm to 82 Nm.
a)
6)
Fig. 3 Laws of change of angular speeds and the moments on shaft milling and winging drums: a - m = 95,5 Nm ; b - m = 64,2 Nm
' ' mc * J mc *
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169
Fig. 4 Graphic changes of scope of fluctuations of angular speeds and the moments on shaft milling and winging drums from a variation of loading from processed soil, where, 1- A(m ; 2- A(w ; 3- AMm ; 4- AMw
a)
6)
Fig. 5 Dependences of change Pw , Pm , Mw and mm from variation mwc,
where 1- ( ; 2- P ; 3- Mm ; 4-m w
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A i>, M,102t 1/s Nlll
4.2 -
10,0
0,9
3.1
2.0
0,2
0,8 -
0,6
0,4 -
1,5 3,0 4,5 6,0 7,5 14, 10JNm
Fig. 6 Graphic dependences of change of average values of angular speeds and the moments on shaft milling and winging drums at a variation of loading from sowing
seeds with the crushed soil
For maintenance of necessary non-uniformity of movement milling and winging drums and also the maximum decrease in loading on a drive unit work is recommended at mm - 70 - 85 Nm, mw = 35 - 45 Nm.
Literature:
1. Djuraev А., Turdaliyev V., Muhammedov J. The combined unit. Patent of Rеpublic of Uzbekistan, №FAP20150012. - 2015.
2. Djuraev А. Dynamics of working mechanisms clap of the processing cars. Tashkent, 1987. - 168 p.
