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美國(guó)派克 parker擺線液壓馬達(dá)的特點(diǎn)及分類(lèi)
從能量轉(zhuǎn)換的觀點(diǎn)來(lái)看,液壓馬達(dá)是將輸入的液壓能轉(zhuǎn)換為了機(jī)械能,而液壓泵正好相反,所以液壓泵與液壓
達(dá)是可逆工作的液壓元件,向任何一種液壓泵輸入工作液體,都可使其變成液壓馬達(dá)工況;反之,當(dāng)液壓馬達(dá)的
軸由外力矩驅(qū)動(dòng)旋轉(zhuǎn)時(shí),也可變?yōu)橐簤罕霉r。因?yàn)樗鼈兙哂型瑯拥幕窘Y(jié)構(gòu)要素--密閉而又可以周期變化的容
積和相應(yīng)的配油機(jī)構(gòu)。
但是,由于液壓馬達(dá)和液壓泵的工作條件不同,對(duì)它們的性能要求也不一樣,所以同類(lèi)型的液壓馬達(dá)和液壓泵
之間,仍存在許多差別。首先液壓馬達(dá)應(yīng)能夠正、反兩個(gè)方向旋轉(zhuǎn),因而要求其內(nèi)部結(jié)構(gòu)對(duì)稱(chēng);液壓馬達(dá)的轉(zhuǎn)速范
圍需要足夠大,特別對(duì)它的低穩(wěn)定轉(zhuǎn)速有一定的要求。因此,它通常都采用滾動(dòng)軸承或靜壓滑動(dòng)軸承;其次液壓馬
達(dá)由于在輸入壓力油條件下工作,因而不必具備自吸能力,但需要一定的初始密封性,才能提供必要的起動(dòng)扭矩
由于存在著這些差別,使得液壓馬達(dá)和液壓泵在結(jié)構(gòu)上比較相似,但不能可逆工作。
液壓馬達(dá)按其結(jié)構(gòu)類(lèi)型來(lái)分可以分為齒輪式、葉片式、柱塞式等型式。按液壓馬達(dá)的額定轉(zhuǎn)速分為高速和低速
兩大類(lèi)。額定轉(zhuǎn)速高于500r/min的屬于高速液壓馬達(dá),額定轉(zhuǎn)速低于500r/min的屬于低速液壓馬達(dá)。高速液壓
馬達(dá)的基本型式有齒輪式、螺杄式、葉片式和軸向柱塞式等。它們的主要特點(diǎn)是轉(zhuǎn)速較高、轉(zhuǎn)動(dòng)慣量小,便于啟動(dòng)
和制動(dòng),調(diào)節(jié)(調(diào)速及換向)靈敏庋高。通常高速液壓馬達(dá)輸出轉(zhuǎn)矩不大(僅幾十Nm到幾百Nm),所以又稱(chēng)為高速小
扭矩液壓馬達(dá)。低速液壓馬達(dá)的基本型式是徑向柱塞式和擺線式,低速液壓馬達(dá)的主要特點(diǎn)是排量大、轉(zhuǎn)速低,因
此可直接與工作機(jī)構(gòu)連接,不需要減速裝置,使傳動(dòng)機(jī)構(gòu)大為簡(jiǎn)化,通常低速液壓馬達(dá)輸出轉(zhuǎn)矩較大(可達(dá)幾千
Nm),所以又稱(chēng)為低速大扭矩液壓馬達(dá)
美國(guó)派克 parker擺線液壓馬達(dá)的工作原理
擺線液壓馬
以的原理(少齒差原理)制成的內(nèi)嚙合擺線齒輪液壓馬達(dá),簡(jiǎn)稱(chēng)擺線
如圖,轉(zhuǎn)子與定子是一對(duì)擺線針齒嚙合副,轉(zhuǎn)子具有zi(zi=6或8)個(gè)齒的短幅外擺線等距線齒形,定子具有
Zⅰ+1個(gè)圓弧針齒齒形,轉(zhuǎn)子和定子形成Z+1個(gè)封閉齒間容積。其中一半處于高壓區(qū),一半處于低壓區(qū)。定子固定不
動(dòng),其齒圈中心為02,轉(zhuǎn)子的中心為O。轉(zhuǎn)子在壓力油作用下產(chǎn)生的液壓力矩以偏心距g為半徑繞定子中心02作
星運(yùn)動(dòng),即轉(zhuǎn)子一方面在繞自身的中心O自轉(zhuǎn)的同時(shí),另一方面其中心O又繞定子中心02反向公轉(zhuǎn),轉(zhuǎn)子在沿定子
滾動(dòng)時(shí),其進(jìn)回油腔不斷地改變,但始終以連心線oⅰ02為界分成兩邊,—邊為進(jìn)油,容腔容積逐漸増大;另-—邊排
油,容積逐漸縮小,將油液擠岀,通過(guò)配油機(jī)構(gòu),再經(jīng)油馬達(dá)出油口排往油箱
TG0170AS020FSAB
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TG0195BS620BBDD
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TG0195MB050AAAA
TG0195MB050AAAB
TG0195ME030AAAB
TG0195ME050AAAA
TG0195ME070AAAA
TG0195MH030AAAA
TG0195MM010AAAA
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TG0195MM050AAAB
TG0195MM050BBCG
TG0195MS010AAAA
TG0195MS010AAAB
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TG0195MS010BBBB
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TG0195MS020AAAA
TG0195MS020AAAB
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TG0195MS030AAAH
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TG0195MS200AAAB
TG0195MS200BBBB
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TG0195MS390BBBG
TG0195MS390BBBL
TG0195MS390BBBN
TG0195MS390BBCL
TG0195MS440AAAA
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TG0195MW030BBCG
TG0195MY440AAAA
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TG0240MS050AAAT
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TG0240MS050BBBY
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TG0240MS051AAAB
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TG0240MS200BBBD
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TG0240MS390BBFJ
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TG0240MS440BBDB
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TG0240UB190AAAF
TG0240US010AAAA
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TG0240US030AAAT
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TG0280BS200BBBG
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TG0280EW460AAAB
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TG0280MS030AAAB
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TG0280MS030AAAJ
TG0280MS030AABK
TG0280MS030AAFW
TG0280MS030BBBA
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TG0280MS030BBBF
TG0280MS030FSAA
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TG0280MS031AAAA
TG0280MS031AAAB
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TG0280MS040AAAB
TG0280MS040BBCD
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TG0280MS050AAAB
TG0280MS050AAAG
TG0280MS050AAAT
TG0280MS050AAUX
TG0280MS050BBBB
TG0280MS050BBBC
TG0280MS050BBBG
TG0280MS050BBBJ
TG0280MS050BBBU
TG0280MS080AAAA
TG0280MS080AAAB
TG0280MS080AAAF
TG0280MS080AABN
TG0280MS080BBFB
TG0280MS190AAAA
TG0280MS190BBBF
TG0280MS200AAAA
TG0280MS200AAAB
TG0280MS200BBBB
TG0280MS200BBBC
TG0280MS200BBBF
TG0280MS200BBCD
TG0280MS390BBCL
TG0280MT030AAAA
TG0280MT030FSAB
TG0280MT030FSAD
TG0280MT080FSAB
TG0280MT200AAAA
TG0280MT460AAAB
TG0280MV020AAAB
TG0280MV460AAAA
TG0280MW460AAAB
TG0280UA080AAAA
TG0280UA080AAAF
TG0280UB020AAAA
TG0280UB030AAAA
TG0280UB080AAAF
TG0280UB080AABP
TG0280UE200AAAA
TG0280US010AAAA
TG0280US010AAAB
TG0280US010BBBG
TG0280US020AAAB
TG0280US030AAAA
TG0280US030AAAB
TG0280US030AAAC
TG0280US030AABN
TG0280US030BBBC
TG0280US030BBBD
TG0280US050AAAA
TG0280US050AAAB
TG0280US080AAAA
TG0280US080AAAB
TG0280US080AAAF
TG0280US080AAAJ
TG0280US080AAAT
TG0280US080AABJ
TG0280US080AABP
TG0280US080AABT
TG0280US080AACL
TG0280US080AAGW
TG0280US080BBBB
TG0280US080BBBD
TG0280US080BBCW
TG0280US080FSAJ
TG0280US081AADD
TG0280US081AANG
TG0280US081AAWP
TG0280US190AAAA
TG0280US190AAAB
TG0280US200AAAA
TG0280US200BBBB
TG0280VA020AAAB
TG0280VB030AAAB
TG0280VB080AAAB
TG0280WA030AAAA
TG0280WA610AAPG
TG0280WB030AAAA
TG0280WB080AAAA
TG0280WB080AAAB
TG0280WB080AANT
TG0280WE050AAFA
TG0280WE440AAAB
TG0280ZS020AAAB
TG0310AS010AAAB
TG0310AS050AAAA
TG0310AS050AAAB
TG0310AW070AAAB
TG0310AW260AAAB
TG0310LS080AAFG
TG0310LS081AAUN
TG0310MS010AAAB
TG0310MS030AAAB
TG0310MS050AAAB
TG0310MS051AAAA
TG0310UB080AAAB
TG0310UJ081AAPC
TG0310US080AAAA
TG0310US080AAAB
TG0310US080AAAF
