ࡱ > Y ` R ` bjbj ! 8 8 8 ( D9 0: ^k ; T> : > > > }B =E F h j j j j j j j $ Dm h o \ j i I B | }B I I j > > k ^ ^ ^ I > ^ > j ^ I j ^ ^ : mc , @ c > ; 0Ji1 8 U c d .k 0 ^k c . p S\ Hp c p $p $ c F L 7G 6 ^ mG , G ( qF B F $ F j j =^ F F F ^k I I I I * 8 8 -NVwl'Yf[NSN kNe bl:g0WbRg f[uY TsIQ f[ S0 2 0 2 1 7 3 6 NNs~wl]z2 0 0 2 - 7 s c[Ye^ _SfQ 2 0 0 6 t^6 g2 2 e Xd 9hnc8nh_bl:gVޏFg:ggvQUOsQ|TЏRyrp^zN8nhvFdRezv^|nx{Q8nh_bl:g`pЏRSpeQbl:gIQFgY}wT`'`}wSЏR:ggv͑RT`'``Q^zNbl:g|~v[fgvI{HeRRf[!jWv^BlQwQ gRs^ayr_vfgtQmbw9hncbl:gv&^ ORyrpTRf[Rg^zN Ny{Ovv&^ ORHes{!jW:NRgbl:gwe]\OSpecONt/ec͑e[INNhTg}w|pe{P5uR:g[Rsv^N8^ĉ8nh_bl:g0_Sw_bl:g:NOQN{:gz^[sN͑Spev{~6RNsQ.f~1udkk_QNbl:gvOp0e-N؏[vQNbl:gۏLN{N~0 sQ.͋^R^mbwhTg}w|pe_Sw_ A B S T R A C T B a s e d o n t h e u n i q u e g e o m e t r y a n d m e c h a n i c a l m o v e m e n t o f b e a m pumping unit, we have presented a simple swing equation and computed motorial parameter; meanwhile under the conditions of the static load and inertial load of the polished-rod of a conventional pumping unit, we have also presented on equivalent dynamic model of the pumping unit system and the type-curves of net torque of the crankshaft with the characteristic of inertial counterbalance have been computed; Based on features and mechanical analysis of belt a s i m p l e m o d e l f o r c a l c u l a t i n g b e l t t r a n s m i s s i o n e f f i c i e n c y i s d e v e l o p e d t h e m o d e l c a n p r o v i d e a t h e o r e t i c a l b a s e f o r s t u d y o n t h e o t h e r t r a n s i e n t v a r i a b l e o f b e a m p u m p i n g u n i t ; T h e c y c l i c l o a d i n g c o e f f i c i e n t s i s d e f i n e d o n c e a n d c o m p u t e t h e n o m i n a l P o w e r o f t h e m o t o r ; a t l a s t w e c o m p a r e t h e b e a m p u m p i n g u n i t a n d t h e a d j u s t a b l e d i a m e t e r a n d c h a n g e a b l e t o q u e p u m p i n g u n i t , b a s e d o n t h i s a p r o g r a m h a v e b e e n f i n i s h e d a n d w e a l s o i n t r o d u c e o t h e r p o w e r s a v i n g p u m p i n g u n i t s . K e y w o r d s : v e l o c i t y ; a c c e l e r a t i o n ; t o q u e ; t h e c y c l i c l o a d i n g c o e f f i c i e n t s ; a d j u s t a b l e d i a m e t e r a n d c h a n g e a b l e t o q u e p u m p i n g u n i t v U_ ,{1 z MR & & & & & & & & & & & & & & & & & & & & & & & & & & 1 1 1 VQYl0ubl:gvsr& & & & & & & & & & & & & & & & & & 1 1 2 8nh_bl:gvel& & & & & & & & & & & & & & & & & & 1 ,{2 z 8nh_bl:g0WbRg& & & & & & & & & & & & & & & & 2 2 1 8nh_bl:g& & & & & & & & & & & & & & & & & & & & & & & 2 2 2 bl:g`pЏRĉ_& & & & & & & & & & & & & & & & & & & & 3 2 2 1 8nhFdRezv^z & & & & & & & & & & & & & & & & & 3 ,{3 z 0WbRgoNv6RN^(u& & & & & & & & & & & & & & 5 3 1 lNpenc& & & & & & & & & & & & & & & & & & & & & & & & & 5 3 2 0WbYpenc& & & & & & & & & & & & & & & & & & & & & & & 5 ,{4 z ~& & & & & & & & & & & & & & & & & & & & & & & & & & 7 "& & & & & & & & & & & & & & & & & & & & & & & & & & & & & & 8 Se.s& & & & & & & & & & & & & & & & & & & & & & & & & & & & 9 DU_& & & & & & & & & & & & & & & & & & & & & & & & & & & & & 1 0 ,{1 z MR 1 . 1 VQYl0ubl:gvsr bl:gR:N8nh_bl:gTe8nh_bl:g$Ny08nh_bl:gwQ g~g{US06R [f0S`'`ؚ0]\OcEN0^]QagN}YI{Op(WǑl]NSU\vRg'Yϑv^(u; FO8nh_bl:g_NX[(W NKNYYHesNON0(u5ub,gؚI{:p0e8nh_bl:g gQze8nhbl:gI{[wQ gRsVpeؚ0HesؚI{Op@bNbl:gvSU\eT/fe8nh_bl:g[ 1 ] 0 1 . 2 8nh_bl:gvel _w8nh_bl:g5u:g}HesNOvSV;N gNNQ*Neb: ( 1 ) 8nh_bl:gv5u:g/f&^}wRVdkwRe@b vwR5uAm_'YRsVpe_NO[5uR:gvRsBlk'Y0 ( 2 ) 8nh_bl:gvQRs/fhTg'`SSvVvQqR5u:gv5uAm_N/fhTg'`SSv0(W b5uR:ge:NNO NǏAQv)n^5u:gv[5uAm S5u:gЏLǏz-Nv g'Y