Swashplate thiab khoov -axis units yog ob qho tib siaxial piston tshuab. Lawv siv tib yam hauv paus ntsiab lus: lub tog raj kheej tig lub tog raj kheej, pistons sib npaug rau lub thoob axis, thiab lub phaj valve uas hloov siab thiab nqus. Dab tsi txawv yog qhov twg lub kaum sab xis zaum thiab qhov twg nqa lub nra.
Qhov kev xaiv ntawd cuam tshuam rau qhov siab tshaj plaws ceev, pib lub zog, hloov pauv ntau yam, yuav ua li cas cov ncej tuav sab loads, nqi, thiab seb ib chav tsev puas tuaj yeem hloov pauv rau lwm qhov.
Qhov twg lub kaum sab xis zaum thiab tsav dab tsi
Swashplate (hauv - kab) tsim
Tsav ncej thiab lub tog raj kheej chim sib koom ib axis. Cov pistons caij rau khau khiab tawm tsam ib lub phaj inclined. Thaum lub thoob tig, lub phaj lub kaum sab xis ua rau txhua lub piston stroke hauv thiab tawm. Hauv lub cev muaj zog, lub zog pistons thawb tawm ntawm lub phaj inclined, uas ua rau lub thoob tig, thiab lub thoob ces tig lub ncej.
Insane Hydraulic sums up the direction of force like this: nyob rau hauv swashplate motorslub chim tsav lub ncej. (Insane Hydraulic)
Khoov-axis tsim
Lub cylinder chim yog tilted piv rau ncej. Cov piston txuas mus rau lub flange tsav ntawm lub ncej, yog li lub zog piston mus ncaj nraim rau hauv lub ncej. Ib qho synchronizing keeb ces ua kom lub thoob tig nrog lub ncej. Cov khoom ntawd tuaj yeem yog lub hauv paus ncej, lub piston rods lawv tus kheej, lossis lub sijhawm siv sijhawm. Ntawm notus ncej tsav lub chim. (Insane Hydraulic)
Parker, piv txwv li, siv lub sij hawm iav los synchronize lub ncej thiab chim hauv nws F11 / F12 series. (Parker Hannifin, catalog MSG30-8249/UK)
Vim li cas lub kaum sab xis tseem ceeb
Piston stroke nce nrog lub kaum sab xis. Lub kaum sab xis swashplate feem ntau txwv rau qis dua 20 degree, thaum lub bent -axis unit tuaj yeem khoov mus rau li 40℃. (Hydraulic Supermarket, Brendan Casey) Cov khoom tiag span that range:
<20°
Hom swashplate txwv
~ 40 degree
Khoov-axis sab sauv
40 degree
Parker F11/F12
32 degree
Danfoss H1B
- Parker's F11 / F12 taag units siv 40℃kaum sab xis ntawm ncej thiab chim, uas lub tuam txhab credits rau lub compact, lub teeb yuag. (Parker Hannifin: koj puas xav tau ntau tus thwjtim?)
- Danfoss's H1B hloov pauv hloov khoov-axis lub cev muaj zog ua haujlwm txog li 32℃. (Danfoss)
Kev mob stroke ntev txhais tau hais tias kev hloov pauv ntau dua los ntawm lub thoob me me thiab tsawg dua, qhov hloov me me. Qhov ntawd yog qhov uas feem ntau khoov -axis zoo los ntawm.
Ob chav catalog dab tsi qhia ntawm tib qhov kev hloov pauv
Kev sib piv dav dav yooj yim dua los txiav txim nrog cov ntaub ntawv tiag. Cov lus hauv qab no tso ob lub Bosch Rexroth tsau- cov motors hloov chaw ntawm 45 cc/rev ib sab, ib qho ntawm txhua tus qauv. Ob daim duab yog los ntawm cov chaw tsim khoom cov ntaub ntawv. Cov kab theoretical raug xam raws li tau piav qhia hauv qab lub rooj.
| Parameter | A10FM 45 (Swashplate) | A2FM 45 (khoov-axis) |
| Kev hloov pauv Vg | 44.5 cm³/v | 45.6 cm³/v |
| Nominal / siab tshaj plaws | 280/350 bar | 400/450 bar |
| Max ceev (cov ntaub ntawv ntawv) | 4,000 rpm | 5,600 rpm ib |
| Theoretical torque ntawm nominal siab | 198nm ua | 290nm ua |
| Theoretical ntws ntawm max ceev | 178 L / min | 255L / min |
| Theoretical hydraulic zog (nominal siab, max ceev) | 83 kW | ≈ 170 kW |
| Qhov chaw | Bosch Rexroth RE 91172 | Bosch Rexroth RE 91001 1 |
Yuav ua li cas cov kab laij lej tau ua tiav
• Theoretical torqueT=Vg × Δp / (20π), hauv Nm, nrog Vg hauv cm³ thiab Δp hauv bar
• NtwsQ=Vg × n / 1000, hauv L / min
• Hwj chimP = Q × Δp / 600,v kW
Cov nuj nqis no tawm ntawm kev poob siab thiab kev siv tshuab. Lawv kuj tsis sawv cev rau qhov kev ntsuam xyuas tas mus li, vim hais tias ib chav tsev tsis yog txhais tau tias khiav ntawm qhov siab tshaj plaws thiab lub siab nominal nyob rau tib lub sijhawm ntev.
Yuav ua li cas nyeem lub rooj:
Thaum yuav luag tib qhov kev hloov pauv, qhov khoov -axis chav nyob yog ntsuas txog 40% sai dua (5,600 vs 4,000 rpm). Qhov no phim Casey cov ntsiab lus dav dav uas khoov -axis lub cev muaj zog tuaj yeem khiav nrawm dua li hauv - kab tsim ntawm tib qhov kev hloov pauv.
Ob daim ntawv teev cov tsev neeg nyob rau hauv cov chav kawm siab sib txawv. Nrog rau ob qho tib si siab dua thiab siab dua, lub khoov -axis chav tswj txog ob npaug ntawm lub zog hydraulic nyob rau hauv cov chav kawm hloov pauv zoo sib xws.
Lub swashplate cov ntaub ntawv teev cov pib torque ntawm 0 rpm thiab 280 bar ntawm 170 Nm rau qhov loj 45. Nws theoretical torque yog 198 Nm, yog li nws xa txog 86% ntawm breakaway. Rau qhov me me 23, qhov sib piv yog qis dua: 75 ntawm 105 Nm, txog 71%. (Bosch Rexroth RE 91172) A2FM cov ntaub ntawv teev npe "kev pib ua haujlwm zoo" raws li qhov tshwj xeeb tab sis, nyob rau hauv tsab tshuaj xyuas, tsis muab lub rooj sib tw torque. Casey muab qhov khoov -axis breakaway kom zoo dua li ntawm 5% dhau ib qho hauv - kab lub cev muaj zog ntawm tib qhov kev hloov pauv.
Cov no yog ob tsev neeg cov khoom lag luam los ntawm ib lub chaw tsim khoom, tsis yog txoj cai ntawm physics. Qee cov twj swashplate, piv txwv li, khiav ntawm qhov siab dua li A10FM. Siv lub rooj kom pom qhov sib txawv los nrhiav, tom qab ntawd xyuas cov ntaub ntawv tiag tiag rau koj chav nyob.
Trade-offs uas hloov qhov kev txiav txim
| Qhov xwm txheej | Swashplate | Khoov -axis |
| Qhov siab tshaj plaws | Feem ntau yog <20 degree | Txog li 40 degree |
| Ceev ntawm qhov muab tshem tawm | qis | Siab dua |
| Breakaway / qis-speed torque | qis; poob ntxiv rau qhov me me (saib cov lus saum toj no) | Nyob ib ncig ntawm 5% siab dua (Casey) |
| Kev hloov pauv hloov pauv ntau yam | Nqaim dua | Nyob ib ncig ntawm ob zaug tus mob stroke ratio (Casey) |
| Mus rau xoom hloov chaw | Feem ntau | Qee cov qauv ua tau, tsis yog tag nrho |
| Sab nraud radial ncej load | Tshawb xyuas cov ntaub ntawv; feem ntau txwv | Heavy roller bearings tsim rau nws |
| Los ntawm -tsav mus rau tandem twj | Muaj dav (piv txwv li A10VSO) | Paub meej rau tus qauv |
| Tus nqi yuav khoom | qis | Siab dua, feem ntau tseem ceeb (Casey) |
Qhov chaw: lub kaum sab xis, stroke ratio, breakaway torque thiab tus nqi yog los ntawmHydraulic Supermarket. Zero displacement thiab bearings yog them rau hauv cov ntsiab lus hauv qab no.
Ob peb ntawm cov kab no xav tau ntau lub ntsiab lus:
Nws feem ntau tau hais tias tsuas yog hauv - kab motors tuaj yeem mob stroke mus rau xoom, uas qee qhov tsav tsheb yuav tsum tau freewheel lossis hloov hom. Casey cov lus yuav tsum ceev faj: tsis yog txhua qhov hloov pauv hloov khoov -axis motors tuaj yeem mus rau xoom. Danfoss muaj qhov khoov -axis hloov pauv lub cev muaj zog nrog xoom-degree muaj peev xwm. (Danfoss H1B) Yog tias koj lub tsav xav tau xoom xaim, sau nws rau hauv spec thiab lees paub nws rau tus qauv tseeb. Tsis txhob xav tias nws los ntawm hom tsim.
Hauv qhov khoov -axis chav tsev, piston quab yuam mus ncaj nraim rau hauv ncej, yog li cov ncej bearings nqa hnyav. Casey sau tseg tias cov kabmob no feem ntau ua rau tsis ua haujlwm ntxov dua li hauv - kab ncej bearings. Mobile Hydraulic Tips hais tias koj muaj feem yuav hloov tau cov kabmob ntawm qhov khoov -axis twj tso kua mis. (Mobile Hydraulic Cov Lus Qhia)
Cov tib loj tapered menyuam bearings yog vim li cas khoov -axis units ua rau sab nraud loads zoo. Parker hais tias nws hnyav -cov menyuam bearings tso cai rau ntau yam sab nraud axial thiab radial ncej loads. Mobile Hydraulic Tips hu khoov-axis ib qho kev xaiv muaj zog rau cov twj uas tau tsav los ntawm lub zog los yog rub. Rexroth ntxiv tias kev teeb tsa cov kev taw qhia ntawm lub zog radial tuaj yeem txo cov kabmob thiab txuas ntxiv lub neej kev pabcuam. (Bosch Rexroth RE 91001 1)
Vim hais tias cov ncej yuav tsum tig ib lub thoob hnyav, cov khoom synchronizing yog nyob rau hauv cyclic torsion. Insane Hydraulics txuas rov ua synchronizing-shaft so kom qaug zog los ntawm nquag, ntse acceleration thiab deceleration. (Insane Hydraulic) Kho qhov no raws li tus qauv tsis ua haujlwm pom hauv daim teb, tsis yog qhov ntsuas qhov ua tsis tiav. Nws tseem tsim nyog xyuas ntawm lub luag haujlwm cycles nrog kev thim rov qab tas li.
Cov lus teb hloov li cas los ntawm daim ntawv thov
Kev tsim qauv zoo dua nyob ntawm txoj haujlwm, tsis yog ntawm tus tsim nws tus kheej. Nov yog yuav ua li cas kev lag luam-offs saum toj no ua si tawm hauv cov xwm txheej ntau:
| Daim ntawv thov | Pib taw tes | Yog vim li cas, thiab dab tsi los kuaj |
| Kaw -kev mus los lossis kev tsav tsheb nrog ntau yam ceev | Variable bent -axis motor | Ua kom siv tau zoo ntawm nws qhov kev hloov pauv loj thiab kev kub ceev. Danfoss txoj haujlwm nws H1B feem ntau yog kaw -circuit propel. Ib qho kev sib xyaw ua ke ua ke ib lub twj tso kua mis swashplate sib txawv, xws li A4VG- hom kaw- lub twj tso kua mis Circuit Court, nrog qhov hloov pauv hloov khoov -axis lub cev muaj zog xws li A6VM. Hom Circuit Court tseem ceeb npaum li lub twj tso kua mis tsim ntawm no; peb cov lus qhia rauqhib Circuit Court vs kaw Circuit Court piston twjnpog uas cais. |
| Cov twj uas tau tsav los ntawm txoj siv sia, iav lossis lub cav PTO nrog sab load ntawm lub ncej | Tsau khoov-axis twj tso kua mis | Nws cov bearings yog tsim rau sab nraud radial quab yuam. Sheungchak's A2FO thiab A17FO twj, piv txwv li, yog kho khoov -axis tsim. |
| Industrial zog units, presses thiab tshuab cuab yeej | Variable swashplate twj tso kua mis | Lub siab, ntws thiab lub zog tswj tau yooj yim, thiab dhau los ntawm -tsav tso cai rau tandem twj. A10VSO, piv txwv li, los nrog kev tswj hwm suav nrog DR, DFR thiab DFLR, nrog los ntawm - tsav raws li kev xaiv. Kev hloov pauv yooj yim los ntawm tilting lub swashplate, yog li kev tswj tau yooj yim thiab tus nqi qis dua. |
| Tus nqi-tsav, nruab nrab- nrawm, nruab nrab- siab circuits | Swashplate unit | Feem ntau txaus ua haujlwm ntawm tus nqi qis, uas haum rau Casey tus nqi taw tes. |
| Motors uas pib nyob rau hauv load los yog creep ntawm tsawg ceev | Sib piv cov ntaub ntawv | Sib piv breakaway torque, tsis yog hloov chaw xwb. Raws li A10FM cov ntaub ntawv qhia, qhov me me swashplate qhov ntau thiab tsawg tuaj yeem poob qhov pom ntawm qhov kev xav ntawm lub zog ntawm 0 rpm. |
Hloov: khaws mus rau qhov qub tsim
Thaum lub twj tso kua mis lossis lub cev muaj zog tsis ua haujlwm, cov lus nug siv tau yog seb qhov kev hloov pauv zoo li qub, tsis yog qhov tsim qauv zoo dua. Hloov los ntawm khoov-axis mus rau swashplate, lossis rov qab, tsis zoo li -rau-xws li swap:
Lub tilted chim muab ib qho khoov -axis unit rau lub tsev sib txawv thiab ntev. Mounting flanges, qhov chaw nres nkoj thiab qhov chaw tso dej yuav tsis tuaj yeem ua haujlwm.
Ib chav tsev swashplate haum qhov twg lub khoov -axis unit tuav txoj siv sia lossis iav sab loads yuav tsis raug ntsuas rau cov quab yuam.
Nyob rau hauv cov lus saum toj no, lub khoov -axis unit yog ntsuas rau ob qho tib si ceev thiab siab dua chav kawm ntawv. Ib qho kev hloov swashplate ntawm tib qhov kev hloov pauv tuaj yeem dhau los.
Cov chav sib txawv ntawm ob tus qauv tsim siv cov txheej txheem tswj sib txawv thiab kev hloov chaw. Lub tshuab teb yuav hloov txawm tias qhov chaw nres nkoj qhov sib tw.
Tus qauv code feem ntau qhia koj tus qauv tsim. Ntawm cov tsev neeg Sheungchak cov khoom siv:
Khoov -axis
A2FM thiab A6VM motors; A2FO thiab A17FO twj
Swashplate
A10VSO, A4VSO, A11VO, A4VG thiab K3V112 twj
Txhawm rau txiav txim siab cov lej no, saibYuav ua li cas nyeem A2FM qauv code.
Ua ntej koj xaj kom hloov lub twj tso kua mis lossis lub cev muaj zog, paub meej tias:
| 1 | Qhov puvntaus code thiab ib feem naj npawblos ntawm daim ntawv teev npe. Qhov no suav nrog tsev neeg tsim, qhov loj me, series thiab tswj. |
| 2 | Kev taw qhia ntawm kev sib hloov, thiab seb lub Circuit Court qhib los yog kaw. |
| 3 | Ncej hom, flange, chaw nres nkoj txoj haujlwm, thiab qhov chaw tso dej. |
| 4 | Ua haujlwm siab, siab siab thiab tsav ceevntawm koj lub voj voog ua haujlwm tiag tiag, tsis yog daim ntawv teev npe siab kawg nkaus xwb. |
| 5 | Ib qhosab nraud ncej loadlos ntawm ib tug siv, iav los yog coupling misalignment. |
| 6 | Rau cov motors sib txawv, seb tus tsav xav tauxoom los yog zero -zero displacement. |
| 7 | Hom kua dej, ua haujlwm kub, thiab qib filtration. |
Yog tias koj hnyav ib feem OEM tiv thaiv chav tsev tom qab muag rau tib tus qauv,original vs aftermarket hydraulic twj tso kua mispiav qhia txog cov ntaub ntawv pov thawj twg los nug.
Xaiv ntawm ob
Xaiv khoov -axis thaum…
Koj xav tau kev kub ceev, siab zog ceev, ntau yam sib txawv, muaj zog breakaway torque, los yog kam rau ua rau cov ncej sab loads, thiab tus nqi siab dua thiab kev saib xyuas cov kabmob tau txais.
Xaiv swashplate thaum…
Koj xav tau lub siab hloov pauv thiab khiav tswj, dhau los ntawm -tsav cov twj tso kua mis, lossis xoom- muaj peev xwm hloov lub cev muaj zog, lossis tus nqi yuav qis dua qhov siab tshaj plaws.
Rau kev hloov pauv, khaws cia rau tus qauv tsim uas twb tau teeb tsa tshwj tsis yog tus kws tshaj lij tau tshuaj xyuas qhov kev teeb tsa, thauj khoom thiab tswj.
Sheungchak Hydraulic khoom siv khoov-axis piston motors hauv A2FM (5 txog 1000 cc/rev), A6VM thiab AA6VM tsev neeg. Yog tias koj tab tom hloov khoov -axis lub cev muaj zog, xa daim ntawv cim npe thiab cov duab ntawm cov ncej, flange thiab cov chaw nres nkoj los ntawm pebhydraulic motor khoom page. Peb pab neeg tuaj yeem paub meej txog qhov sib txuam ua ntej koj tso qhov kev txiav txim.
