新聞:紅星區(qū)直線步進(jìn)電機(jī)57HD76001-01批發(fā) |
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(2)換向器 換向器的作用是與電刷配合,將直流電動(dòng)機(jī)輸入的直流電流轉(zhuǎn)換成電樞繞組內(nèi)的交變電流,或是將直流發(fā)電機(jī)電樞繞組中的交變電動(dòng)勢(shì)轉(zhuǎn)換成輸出的直流電壓。 換向器是一個(gè)由許多燕尾狀的梯形銅片間隔云母片絕緣排列而成的圓柱體,每片換向片的一端有高出的部分,上面銑有線槽,供電樞繞組引出端焊接用。所有換向片均放置在與它配合的具有燕尾狀槽的金屬套簡(jiǎn)內(nèi),然后用v形鋼環(huán)和螺紋壓圈將換向片和套筒緊固成一整體,換向片組與套筒、v形鋼環(huán)之間均要用云母片絕緣。 (3)轉(zhuǎn)軸 在轉(zhuǎn)軸上安裝電樞和換向器。 3.氣隙 靜止的磁極和旋轉(zhuǎn)的電樞之間的間隙稱為氣隙。在小容量電機(jī)中,氣隙為0.5~3mm。氣隙數(shù)值雖小,但磁阻很大,為電機(jī)磁路的主要組成部分。氣隙大小對(duì)電機(jī)運(yùn)行性能有很大影響。 新聞:紅星區(qū)直線步進(jìn)電機(jī)57HD76001-01批發(fā) ![]() 3.直流電機(jī)具有良好的啟動(dòng)特性和調(diào)速特性。因此,在調(diào)速性能要求較高的大型設(shè)備,比如軋鋼機(jī)上都采用直流電動(dòng)機(jī)拖動(dòng)。但它存在著直流換向問(wèn)題,結(jié)構(gòu)復(fù)雜,維護(hù)檢修不方便,而且消耗有色金屬多。 一、直流電機(jī)的優(yōu)點(diǎn) 1.直流電機(jī)具有良好的啟動(dòng)特性和調(diào)速特性 2.直流電機(jī)的轉(zhuǎn)矩比較大 3.維修比較便宜。 4.直流電機(jī)的直流相對(duì)于交流比較節(jié)能環(huán)保。 二、直流電機(jī)的缺點(diǎn) 1.直流電機(jī)制造比較貴 2.有碳刷 新聞:紅星區(qū)直線步進(jìn)電機(jī)57HD76001-01批發(fā) ![]() 為了實(shí)現(xiàn)上述目的所采取的設(shè)計(jì)方案是:將壓敏電阻和陶瓷氣體放電管的單相并聯(lián)式抗雷擊浪涌電路應(yīng)用到儀表的電源上。主要分為防雷電路部分和開(kāi)關(guān)電源電路部分,電路簡(jiǎn)單,采用復(fù)合式對(duì)稱電路,共模、差摸全保護(hù),可以不分L、N端連接。使壓敏電阻RV1位于貼片整流模塊前端分別與電源L、N并聯(lián),主要來(lái)鉗位L、N線間電壓,壓敏電阻RV、RV2與陶瓷氣體放電管FD1串聯(lián)后接地,RV與FD1串聯(lián)主要是泄放L線上感應(yīng)雷擊浪涌電流,RV2與FD1串聯(lián)主要是泄放由信號(hào)口串人24V參考電位上的能量,RV、RV2短路失效后,F(xiàn)D1可將其與電源電路分離,不會(huì)導(dǎo)致失火現(xiàn)象。 新聞:紅星區(qū)直線步進(jìn)電機(jī)57HD76001-01批發(fā) ![]() CH400-3-S-B-G2-RD-H9 CH400-5-S-B-G2-RD-H9 CH400-10-S-B-G2-RD-H9 CH400-15-S-B-G2-RD-H9 CH400-20-S-B-G2-RD-H9 CH400-25-S-B-G2-RD-H9 CH400-30-S-B-G2-RD-H9 CH400-40-S-B-G2-RD-H9 CH400-45-S-B-G2-RD-H9 CH400-50-S-B-G2-RD-H9 CH400-60-S-B-G2-RD-H9 CH400-70-S-B-G2-RD-H9 CH400-80-S-B-G2-RD-H9 CH400-90-S-B-G2-RD-H9 CH400-100-S-B-G2-RD-H9 CH400-120-S-B-G2-RD-H9 CH400-140-S-B-G2-RD-H9 CH400-160-S-B-G2-RD-H9 CH400-180-S-B-G2-RD-H9 CH400-200-S-B-G2-RD-H9 CH750-3-S-B-G2-RD-H9 CH750-5-S-B-G2-RD-H9 CH750-10-S-B-G2-RD-H9 CH750-15-S-B-G2-RD-H9 CH750-20-S-B-G2-RD-H9 CH750-25-S-B-G2-RD-H9 CH750-30-S-B-G2-RD-H9 CH750-40-S-B-G2-RD-H9 CH750-45-S-B-G2-RD-H9 CH750-50-S-B-G2-RD-H9 CH750-60-S-B-G2-RD-H9 CH750-70-S-B-G2-RD-H9 CH750-80-S-B-G2-RD-H9 CH750-90-S-B-G2-RD-H9 CH750-100-S-B-G2-RD-H9 CH750-120-S-B-G2-RD-H9 CH750-140-S-B-G2-RD-H9 CH750-160-S-B-G2-RD-H9 CH750-180-S-B-G2-RD-H9 CH750-200-S-B-G2-RD-H9 CH1500-3-S-B-G2-RD-H9 CH1500-5-S-B-G2-RD-H9 CH1500-10-S-B-G2-RD-H9 CH1500-15-S-B-G2-RD-H9 CH1500-20-S-B-G2-RD-H9 CH1500-25-S-B-G2-RD-H9 CH1500-30-S-B-G2-RD-H9 CH1500-40-S-B-G2-RD-H9 CH1500-45-S-B-G2-RD-H9 CH1500-50-S-B-G2-RD-H9 CH1500-60-S-B-G2-RD-H9 CH1500-70-S-B-G2-RD-H9 CH1500-80-S-B-G2-RD-H9 CH1500-90-S-B-G2-RD-H9 CH1500-100-S-B-G2-RD-H9 CH1500-120-S-B-G2-RD-H9 CH1500-140-S-B-G2-RD-H9 CH1500-160-S-B-G2-RD-H9 CH1500-180-S-B-G2-RD-H9 CH1500-200-S-B-G2-RD-H9 CH2200-3-S-B-G2-RD-H9 CH2200-5-S-B-G2-RD-H9 CH2200-10-S-B-G2-RD-H9 CH2200-15-S-B-G2-RD-H9 CH2200-20-S-B-G2-RD-H9 CH2200-25-S-B-G2-RD-H9 CH2200-30-S-B-G2-RD-H9 CH2200-40-S-B-G2-RD-H9 CH2200-45-S-B-G2-RD-H9 CH2200-50-S-B-G2-RD-H9 CH2200-60-S-B-G2-RD-H9 CH2200-70-S-B-G2-RD-H9 CH2200-80-S-B-G2-RD-H9 CH2200-90-S-B-G2-RD-H9 CH2200-100-S-B-G2-RD-H9 CH2200-120-S-B-G2-RD-H9 CH2200-140-S-B-G2-RD-H9 CH2200-160-S-B-G2-RD-H9 CH2200-180-S-B-G2-RD-H9 CH2200-200-S-B-G2-RD-H9 不能在鉗口上敲擊工件,而應(yīng)該在固定鉗身的平臺(tái)上,否則會(huì)損壞鉗口。絲杠、螺母和其他滑動(dòng)表面要求經(jīng)常保持清潔,并加油潤(rùn)滑。熱點(diǎn)關(guān)注:熱點(diǎn)專題論如何讓每個(gè)人成為家裝高手?一把工具就夠了。熱點(diǎn)專題電動(dòng)工具品牌之牧田:只為人士而生熱點(diǎn)資訊配角怎么了,你缺了它試試?五金配件選購(gòu)要點(diǎn)五金百科木工常用切割工具鼻祖盤點(diǎn)手鋸的使用與注意事項(xiàng)精彩評(píng)測(cè)小巧便攜輕松鋸切。老A戶外1英寸快速折疊木工鋸精彩評(píng)測(cè)家裝維修不求人,贛春多功能自緊萬(wàn)用扳手,多大的螺絲size均適用。 新聞:紅星區(qū)直線步進(jìn)電機(jī)57HD76001-01批發(fā) CV400-3-S-B-G4-DR-V3 CV400-5-S-B-G4-DR-V3 CV400-10-S-B-G4-DR-V3 CV400-15-S-B-G4-DR-V3 CV400-20-S-B-G4-DR-V3 CV400-25-S-B-G4-DR-V3 CV400-30-S-B-G4-DR-V3 CV400-40-S-B-G4-DR-V3 CV400-45-S-B-G4-DR-V3 CV400-50-S-B-G4-DR-V3 CV400-60-S-B-G4-DR-V3 CV400-70-S-B-G4-DR-V3 CV400-80-S-B-G4-DR-V3 CV400-90-S-B-G4-DR-V3 CV400-100-S-B-G4-DR-V3 CV400-120-S-B-G4-DR-V3 CV400-140-S-B-G4-DR-V3 CV400-160-S-B-G4-DR-V3 CV400-180-S-B-G4-DR-V3 CV400-200-S-B-G4-DR-V3 CV750-3-S-B-G4-DR-V3 CV750-5-S-B-G4-DR-V3 CV750-10-S-B-G4-DR-V3 CV750-15-S-B-G4-DR-V3 CV750-20-S-B-G4-DR-V3 CV750-25-S-B-G4-DR-V3 CV750-30-S-B-G4-DR-V3 CV750-40-S-B-G4-DR-V3 CV750-45-S-B-G4-DR-V3 CV750-50-S-B-G4-DR-V3 CV750-60-S-B-G4-DR-V3 CV750-70-S-B-G4-DR-V3 CV750-80-S-B-G4-DR-V3 CV750-90-S-B-G4-DR-V3 CV750-100-S-B-G4-DR-V3 CV750-120-S-B-G4-DR-V3 CV750-140-S-B-G4-DR-V3 CV750-160-S-B-G4-DR-V3 CV750-180-S-B-G4-DR-V3 CV750-200-S-B-G4-DR-V3 CV1500-3-S-B-G4-DR-V3 CV1500-5-S-B-G4-DR-V3 CV1500-10-S-B-G4-DR-V3 CV1500-15-S-B-G4-DR-V3 CV1500-20-S-B-G4-DR-V3 CV1500-25-S-B-G4-DR-V3 CV1500-30-S-B-G4-DR-V3 CV1500-40-S-B-G4-DR-V3 CV1500-45-S-B-G4-DR-V3 CV1500-50-S-B-G4-DR-V3 CV1500-60-S-B-G4-DR-V3 CV1500-70-S-B-G4-DR-V3 CV1500-80-S-B-G4-DR-V3 CV1500-90-S-B-G4-DR-V3 CV1500-100-S-B-G4-DR-V3 CV1500-120-S-B-G4-DR-V3 CV1500-140-S-B-G4-DR-V3 CV1500-160-S-B-G4-DR-V3 CV1500-180-S-B-G4-DR-V3 CV1500-200-S-B-G4-DR-V3 CV2200-3-S-B-G4-DR-V3 CV2200-5-S-B-G4-DR-V3 CV2200-10-S-B-G4-DR-V3 CV2200-15-S-B-G4-DR-V3 CV2200-20-S-B-G4-DR-V3 CV2200-25-S-B-G4-DR-V3 CV2200-30-S-B-G4-DR-V3 CV2200-40-S-B-G4-DR-V3 CV2200-45-S-B-G4-DR-V3 CV2200-50-S-B-G4-DR-V3 CV2200-60-S-B-G4-DR-V3 CV2200-70-S-B-G4-DR-V3 CV2200-80-S-B-G4-DR-V3 CV2200-90-S-B-G4-DR-V3 CV2200-100-S-B-G4-DR-V3 CV2200-120-S-B-G4-DR-V3 CV2200-140-S-B-G4-DR-V3 CV2200-160-S-B-G4-DR-V3 CV2200-180-S-B-G4-DR-V3 CV2200-200-S-B-G4-DR-V3 ![]() |
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