ukhetho umgomo kanye nezinto ezisemqoka ze-hydraulic motor

创建于05.08

ukhetho umgomo kanye nezinto ezisemqoka zomshini we-hydraulic

(l) Ukhetho lwesisekelo kanye neziqondiso: njengoba umshini we-hydraulic ungafani kakhulu nepompo ye-hydraulic enezakhiwo ezifanayo, umgomo wokukhetha nawo ufana. Kodwa kukhona umehluko omningi phakathi komshini we-hydraulic nepompo ye-hydraulic ekusebenzeni (itafula elingezansi). Ikakhulukazi uma kubhekwa ukuthi umsebenzi womshini we-hydraulic uwukuguqula amandla e-hydraulic abe amandla omshini ukuze uphakamise umthwalo ukuze ujike, i-torque yokukhipha (kuhlanganise ne-torque yokuqala) kanye nesivinini kuba yizici ezibaluleke kakhulu ekukhetheni umshini we-hydraulic. Ngaphezu kwalokho, isisekelo noma izindaba okufanele zicatshangelwe ekukhetheni umshini we-hydraulic zifaka ukusebenza kahle, ukuzinza kwesivinini esiphansi, impilo yesevisi, ubudlelwano bokulawula isivinini, umsindo, ifomu nosayizi wokuxhuma, isisindo, intengo, umthombo wezimpahla, ukuhamba kalula kokusebenzisa nokunakekela, njll.

Hydraulic pump na hydraulic motor 

序列号	液压泵	液压马达
1	提供压力和流量，强调容积效率	产生转矩驱动负载，强调机械效率
2	通常在相对恒定的高转速条件下运转	大部分马达转速范围变化大，有的要求在很低的转速下运转
3	泵轴通常一个方向运转，但液流方向及压力有可能变化	液压马达大多要求正、反两方向运转，某些液压马达还要求能以泵的方式运转（泵工况），以达到制动负载的目的
4	在大部分系统中是连续运转的，工作液温度的变化相对很小	按工况，运转可能断续进行，将会遭到频繁的温度冲击
5	大部分液压泵与原动机安装在一起时，主轴不承受额外负载	许多液压马达直接装在车轮内或者与带轮、链轮或齿轮相连接时，有时主轴将承受较高的径向负载

(2) Zikho izigaba eziningi zezimoto ze-hydraulic ezinezakhi ezihlukene, ngakho kufanele sikhethe imoto ye-hydraulic efanele ngokuya ngensiza ethile nezimo zokusebenza. Bheka ithebula 1-18 ukuze ubone izimo ezisebenzayo kanye nomkhakha wokusebenza kwezimoto ezahlukene ze-hydraulic. Imoto yejubane eliphansi noma imoto yejubane eliphezulu yokusheshisa nokwehlisa ingakhethwa ukuze kusebenze ngezinga eliphansi. Ukukhetha phakathi kwalezi zinhlelo kufanele kusekelwe kwesakhiwo nezimo zendawo, izindleko zempahla, nokuthi i-torque yokushayela iyafaneleka yini.

(3) Ikuhlu lokukhetha (ukukhishwa) ukukhishwa kuyisici esiyinhloko sokucaciswa somshini we-hydraulic, futhi ukukhetha kusekelwe kakhulu ezicini zomthwalo osebenzayo zomshini.

The working load characteristics can be represented by the speed time cycle diagram (N-t diagram) and torque time cycle diagram (T-T diagram) through the working condition analysis (motion analysis and dynamic analysis) of the main engine (Fig. J). The load torque of the motor can be determined by calculation or test according to the working mechanism of the main engine and its technological purpose. From T-T diagram and N-t diagram, we can clearly understand the changes of load torque and load speed of the hydraulic motor in the whole working cycle from start-up to normal operation and to stop, that is, the peak load torque of the motor in actual operation and the load torque value of long-term continuous operation, as well as the related maximum load speed and load speed of long-term operation, so as to provide reference for calculation and confirmation Set the displacement specification of hydraulic motor to lay the foundation.

Befor die Auswahl der Verschiebung sollte der Referenzwert der nominalen Verschiebung gemäß den oben genannten Arbeitslastmerkmalen berechnet werden. Je nach Verwendung unterschiedlicher Schwerpunkte gibt es für den Referenzwert der nominalen Verschiebung des Hydraulikmotors die folgenden zwei Berechnungsmethoden.

① Ukuba injongo enkulu ye-motor kukukhupha umthwalo, ixabiso lokubhekisela VG (ml / R) lingabalwa ngokwe-torque enkulu yomthwalo Tmax (n · m), umphakamo ophakanyisiweyo wokusebenza P (MPA) [okanye umphakamo ohlukeneyo △ P (MPA)] kunye ne-mechanical efficiency η m (η m = 0.90 ~ 0.95), oku kukhankanywa.

Vg≥（2πTmax）/pηm                   (1-45)

② Khi mục đích chính của động cơ là tốc độ và sự biến đổi của nó, giá trị tham chiếu VG (ml / R) có thể được tính toán theo tốc độ tối thiểu Nmin (R / phút), lưu lượng đầu vào đã biết QV (L / phút) và hiệu suất thể tích của động cơ η V (có thể được chọn theo mẫu sản phẩm hoặc giữa η v = 0.85-0.9), tức là, tốc độ động cơ có thể được điều chỉnh theo tốc độ động cơ.

Vg≥（1000qvηv）/nmin                   (1-46)

Ngokwe ukunyakaza okubalwe kanye nezibonelo zomkhiqizo, ukunyakaza okukhuluma kuqinisekiswa ngesisekelo sokuseduze.

(4) Ikuhlu lokubala ingcindezi yokusebenza yangempela (noma umehluko wengcindezi) kufanele kusekelwe kumjikelezo ophakeme kanye nomjikelezo wokusebenza oqhubekayo ukuze kubalwe ingcindezi ephakeme nengcindezi yokusebenza eqhubekayo. Uma inani elibaliwe likwi- rangeli yepharamitha yokusebenza yemoto, ukukhetha ukuhamba kuyafaneleka. Ngokuvamile, ingcindezi yokusebenza eqhubekayo yangempela kufanele ibe phansi ngo-20% - 25% kunengcindezi eyincomo yokusebenza ethile emsampleni, ukuze kuthuthukiswe impilo yesevisi nokwethembeka kokusebenza. Lapho umjikelezo ophakeme uvela ngesikhathi sokuqala, ingcindezi ephezulu ingaba ngu-80% wengcindezi ephezulu enikeziwe emsampleni, ukuze kube ne-20% yokugcina efanelekile.

(5) Ngemuva kokuthi ukunyakaza nok pressure yokusebenza yangempela kutholakele, amandla okukhishwa kwe-motor angahlolwa ngokwezibalo zamandla.

(6) Uhlolo lwezimpilo noma ukubala ukuhlola ngemuva kokunquma imodeli kanye nespecification ye-motor, bheka idatha yesampula enikezwe umkhiqizi ukuze uhlola noma uhlole impilo engaba khona ye-hydraulic motor ngaphansi kwezimo zokusebenza zangempela, ukuze unqume ukuthi ukukhetha okukhuluma ngenhla kungahlangabezana nezidingo zomshini omkhulu. Uma impilo yesevisi inganele, kufanele kukhethwe imikhiqizo enezincazelo ezinkulu.

(7) Abanye

① I-motori ye-hydraulic ivame ukuvunyelwa ukuba isebenze ngaphantsi koxinzelelo lwe-20% - 50% lwezinga lokuxinzelela ngexesha elifutshane, kodwa uxinzelelo oluphakathi kokuphosa kunye nesantya esiphezulu asinakubakho ngaxeshanye. Uxinzelelo oluphindayo lwe-circuit yokubuyisela ioli ye-hydraulic lukhawulelwe kumgangatho othile. Xa uxinzelelo oluphindayo lukhulu, umphosa weoli ophumayo kufuneka ubekwe.

② Ngokujwayelekile, i-torque ephezulu kanye nesivinini esiphezulu somshini we-hydraulic akufanele kube khona ngesikhathi esisodwa. Isivinini sangempela akufanele sibe phansi kunesivinini esincane somshini ukuze kugwenywe ukuhamba kancane. Uma isivinini esidingekayo ohlelweni siphansi, futhi isivinini somshini, i-torque nezinye izinkomba zokusebenza zingase zingahlangabezani nezidingo zokusebenza, kungangezwa umshini wokwehlisa isivinini phakathi komshini kanye nomphakeli wawo. Ukuze uqhubeke kahle ngesivinini esiphansi kakhulu, uku leaking komshini kumele kube okujwayelekile, kube nepheshana lokubuyisela elithile lokucindezela kwamanzi kanye ne-viscosity kawoyela okungenani eyi-35mm2gs. Uma umshini udinga ukusebenza ngesivinini esiphansi, isivinini saso esincane esizinzile kufanele sihlolwe.

③ Ukuze kuvinjelwe ukungena komoya noma ukulahleka kwamandla okumisa kwemoto yokumisa esebenza njengepampu, kubalulekile ukuqinisekisa ukuthi kukhona ingcindezi eyanele yokwengeza uwoyela endaweni yokukhipha uwoyela yemoto ngalesi sikhathi, okungafezeka ngepampu yokwengeza uwoyela emjikelezweni ovaliwe noma ngevalvu yokubuyisela ingcindezi emjikelezweni ovulekile; lapho imoto ye-hydraulic iqhuba yük enkulu ye-inertia, kufanele kubekwe i-valve yokuhlola ye-bypass ehambisana nemoto ohlelweni lwe-hydraulic ukuze kwengezwe uwoyela ukuvimbela ukuvalwa Inqubo, imoto enokunyakaza kwe-inertia iyashoda nguwoyela.

④ Ukuhamba kwe-hydraulic motor engakwazi ukumelana namandla e-axial ne-radial angeziwe, noma i-hydraulic motor ingakwazi ukumelana namandla e-axial ne-radial angeziwe, kodwa amandla e-axial ne-radial angempela yükungaphezulu kwamandla e-axial noma e-radial avunyelwe ye-hydraulic motor, kufanele kubhekwe ukuxhumana kwe-elastic ukuze kuhlanganyelwe umshini wokukhipha umshini kanye nomsebenzi.

⑤ Kana motokari ichida kutonhorwa kwenguva refu kuti kudzivirira kufamba kwekurema, inofanira kushandiswa brake yemichina ine spring up brake uye hydraulic release brake pamotokari shaft (Fig. K).

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