[1], [2] - (Danfoss, Rexroth, Char-Lynn. [3, 4, 5]), .. [6]. [7]

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1 OTROL. COISSION OF OTORIZATION AND ENERGETICS IN AGRICULTURE 0, Vol. 6, No. 5, ,,, 008,.,., e-mal: -, :, -,. [],,.,,.., []. - (Danoss, Rexroth, Char-Lynn. [,, 5]),. -,.. [6].., -,,.,.,. - ( 0 ) ,, [7]

2 ,,, (.,),,.,. -,. 5 6, (.,) Fg.. eterng pump o the mproved desgn 88

3 - 8, 9 0,.,,,.,..,.,,...,,. 5 (.,). 6 (.,), 5. ( ) 5,.,,,.,.,.. 6., 5,.,,,. 5.,.,.. (.,) l r b r -,,. 89

4 ,,, - [8, 9, 0]... -,,,.,. :, ; ; - ;.,.,, [].,, : Q = Q. + Q + Q. + Q. + Q. + () Q ; Q., ; Q ; Q. Q.,..; Q.,, ; Q n. Q n.5 ; Q n.9 Q n.0 ; Q n.9.,, : Q. = Q + Q. + Q n Q n + Q n + () + Q n + Q n5 + Q n6, Q, ; Q.,,.; Q n. Q n. ; Q n. + Q n + Q n5 + Q n9 + Q n0 + Q n9, 90

5 -.. - Fg.. Desgn crcut o the steerng system wth the meterng pump o the mproved desgn 9

6 ,,, ; Q. ; Q.5 ; Q.6.,, : Q = Q. + Q. Q n. Q n. () Q n.6 + Q n.7 + Q n.8, Q. ; Q.,,.; Q.7 Q.8 Q.5 Q.. ; Q.,. : Q = Q. + Q.6 + Q Q n Q n5 Q n6, (6) Q. ; Q.6,,.; Q.. : Q. = Q.. + Q.7 Q n9, (7) Q.., ; Q.7,,.. : : Q. = Q. + Q. + Q n8 + Q n8 () Q n0 + Q n Q n, Q., ; Q.,,.; Q.8 Q.. Q. = Q + Q.5 + Q n6 + Q n7 + Q n + Q Q,, (5) Q, ; Q 5,,.; Q.6 Q n7 ; Q. ; Q. 9 Q. = Q. Q.. + Q.8 + Q n + (8) + Q n + Q n0, Q.., Q.., ; Q.8,,., Q n Q n ; Q n0. () (8). []: Q. μ. ρ Δϕ Δ,. ; ;.(), (9)

7 - ; Δ.., []..,.,,,. r a. D.,.. :. 0, Δϕ n r α r β r Δx L t t snα, Δx L () r r, ; α, : L Dx g t α arccos, () r, : 0,. Δϕ n r α r ( r L Δx )snα, Δx L Δx L (0), ; r, ; L ; Δ x ϕ ; : Δx 0. 5 d tg( Δϕ ), () d ; α,. : r L x d..., Fg.. Area seg. o the throttle segment created by an openng and a slot α arccos. () r r t β arccos, (5) r t t, : r t t a r b L.., Fg.. Area seg. o the throttle segment created by two openngs. r r r L Δx r r L Δx Dx r r L x t d, (6) Δ. (7),.,. D 9

8 ,,, L r L r ( x ) n ( L xr (r α x)sn, x r πr (x r ) r ), r x B, (8) r α arccos r β arccos r Δx r Δx r Δx r Δx, (). () L r (B (x B πr r )( L ) πd. r ), x B L, B r.,; d. ; α, : r x α arccos. (9) r.() 5 6,,. 5, :.()= +. (0) 5 6 (. 5, 5,) π r r α r β r r r Δx Δ Δ r Δ L ;, () snα snβ Δ Δ r r r r Δ π r, 0, Δ r r Δx L r r, ; L = r r ;,, ) ) ). 5. L < x< r +r - ), x -) x > r +r ) Fg. 5. Area o the pressure control throttle wthn the range o dsplacement n the spool par L contr< x< r +r or small a), large b) x and n the range x > r +r v) 5 6 x. Δ x r r (. 5,),.,.,. 6, : γ ( ϕ) d tg cos( ϕ) h, () 6 (.,); h, : h R H 0, 5 d Δϕ R r sn, (5) r Δ ϕ Δϕ arctg, (6) R zol R r 6. 9

9 - L Δx Δx r r Δ x (. 5,). 7. k L Δx r r Fg. 7. Curve o the coecent k groove changng the range o dsplacement n the spool par L contr<x<r +r. x L Δx r r : d γ ( ϕ) k h tg cos( ϕ). (8) x 0, x L. 6. Δ x =0 Δx r r Fg. 6. Area o the pressure control throttle or x =0 and or x r +r. Δ x (. 5,),. 6.,, d h x L x r r cos( ) ϕ γ ( ϕ ) ktg (9) d h cos( ) ϕ γ tg, x r r,,, : []: k x r r / r Δ (7) k, 7. V dp Q., (0) E p V, ; () -,,,, [,], : 95

10 ,,, E p p 0 0 V p, () E 0 V n n 0 n ; V ( 0 = 0,, t = 0 ); n -.,, dϕ Q q, () q, dϕ.,, dy Q F, () F n dy,.,, dx Q.... ; () dx Q...., (5)., dx. [] πd Q. ε p p j, ν ρ l (6), d, l,,, (p p j).,, []: n b Q. ε j, νρ l (7) n,, b l.,, []:, (8) np.....,,,,..,..,.. :....., (9),,...., -,.. :......, (0)..,.,.., ;.. : R R R.. R., () R,, R (, ), R..,, R.. : R. R. R R. R.. R., () R.,,., R,, R., R. -,,., R.., R.. (8) - (), -,. : qp. p., () q. 96

11 - -,,.. : 0, ϕ ϕ ϕ., ϕ ϕ ϕ : dx R.. β ; ().. R.. r, (5), dx /, r c. : cr ϕ ϕ, (6), r,,. :... (7),,. : d y R. m, (8) d ϕ. I, (9) m ( ) -, d y, I ( ) -, d ϕ.,, : R Δ, (50), x. -,, : Δϕ ϕ ϕ (5) () - (5) ,,..., () - (5), , :. -.. Ratushna N., ahmudov I., Kokhno A., 007.: // OTROL. 9, 9-.. Sauer-Danoss. General, Steerng Components. Techncal Inormaton. oble Power and Control Systems 50L068, Rev BB, Feb 00. ( : ndex.htm). Product Catalog oble Hydraulcs, onlne verson, last changed 00-0-, Bosch Rexroth AG. ( : - log/vornavgaton/ VorNav.cm?Language=EN&VHst =g5076%cg507%cg677&pageid=m0068) 5. EATON Steerng Catalog C-STOV-C00-E September 0. ( : , ,.., ,. 8.

12 ,,, , ,..,.., ,.. 8..,., 009.: // OTROL. -, ,., 0.: // OTROL. -, Lytvynov O., Tanas W., 006.: // OTROL. - 8, , : ,.., : ,.., 99...:, 8...., 98...: -, 6. IPROVEENT CONSTRUCTION OF ETERING PUP-DEVICE SYSTE OF HYDROVOLUETRIC STEERING ANAGEENT IN SELF-PROPELLED ACHINES Summary. The paper consders an mproved meterng pump desgn where dstrbuton assembly has been modernzed. In ths desgn the dran edge o the spool par s made n the orm o an adonal sngle-edge spool. An orgnal system or controllng the adonal sngle-edge spool poston s proposed. A mathematcal model o the hydrostatc steerng system, based on the proposed meterng pump, has been developed. Key words: hydrostatc steerng system, meterng pump, mathematcal model.

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