直流無刷電機(jī)的基本維護(hù)
1、在拆卸前,要用壓縮空氣吹凈電機(jī)表面灰塵,并將表面污垢擦拭干凈。
2、選擇電機(jī)解體的工作地點(diǎn),清理現(xiàn)場環(huán)境。
3、熟悉電機(jī)結(jié)構(gòu)特點(diǎn)和檢修技術(shù)要求。
4、準(zhǔn)備好解體所需工具(包括專用工具)和設(shè)備。
5、為了進(jìn)一步了解電機(jī)運(yùn)行中的缺陷,有條件時可在拆卸前做一次檢查試驗(yàn)。為此,將電機(jī)帶上負(fù)載試轉(zhuǎn),詳細(xì)檢查電機(jī)各部分溫度、聲音、振動等情況,并測試電壓、電流、轉(zhuǎn)速等,然后再斷開負(fù)載,單獨(dú)做一次空載檢查試驗(yàn),測出空載電流和空載損耗,做好記錄。
6、切斷電源 ,拆除電機(jī)外部接線,做好記錄。
7、選用合適電壓的兆歐表測試電機(jī)絕緣電阻 。為了跟上次檢修時所測的絕緣電阻值相比較以判斷電機(jī)絕緣變化趨勢和絕緣狀態(tài),應(yīng)將不同溫度下測出的絕緣電阻值換算到同一溫度,一般換算至75℃。
8、測試吸收比K。當(dāng)吸收比大于1.33時,表明電機(jī)絕緣不曾受潮或受潮程度不嚴(yán)重。為了跟以前數(shù)據(jù)進(jìn)行比較,同樣要將任意溫度下測得的吸收比換算到同一溫度。
新聞:建昌縣連接器組裝機(jī)專用步進(jìn)電機(jī)HSTM42-1.8-D-26-4-0.4交貨期
7, 步進(jìn)電機(jī)啟動運(yùn)行時,有時動一下就不動了或原地來回動,運(yùn)行時有時還會失步,是什么問題?
一般要考慮以下方面作檢查:
1) 電機(jī)力矩是否足夠大,能否帶動負(fù)載,因此我們一般推薦用戶選型時要選用力矩比實(shí)際需要大 50%~ 的電機(jī),因?yàn)椴竭M(jìn)電機(jī)不能過負(fù)載運(yùn)行,哪怕是瞬間,都會造成失步,嚴(yán)重時停轉(zhuǎn)或不規(guī)則原地反復(fù)動。
2) 上位控制器來的輸入走步脈沖的電流是否夠大(一般要 >10mA ),以使光耦穩(wěn)定導(dǎo)通,輸入的頻率是否過高,導(dǎo)致接收不到,如果上位控制器的輸出電路是 CMOS 電路,則也要選用 CMOS 輸入型的驅(qū)動器。
3) 啟動頻率是否太高,在啟動程序上是否設(shè)置了加速過程,從電機(jī)規(guī)定的啟動頻率內(nèi)開始加速到設(shè)定頻率,哪怕加速時間很短,否則可能就不穩(wěn)定,甚至處于惰態(tài)。
4) 電機(jī)未固定好時,有時會出現(xiàn)此狀況,則屬于正常。因?yàn)椋瑢?shí)際上此時造成了電機(jī)的強(qiáng)烈共振而導(dǎo)致進(jìn)入失步狀態(tài)。電機(jī)必須固定好。
新聞:建昌縣連接器組裝機(jī)專用步進(jìn)電機(jī)HSTM42-1.8-D-26-4-0.4交貨期

一般來說,鎖點(diǎn)越多,門窗的抗風(fēng)壓性能就越強(qiáng)。同時,也要考慮鎖點(diǎn)的配置方式,只有合理選擇門窗中鎖點(diǎn)的數(shù)量和布局的情況下,才會使多點(diǎn)鎖起到有效曠作用。在確保門窗性能的前提下,優(yōu)化鎖點(diǎn)布局,降低五金使用成本,才是的組合。關(guān)于鎖點(diǎn)數(shù)量的計(jì)算比較復(fù)雜,在此推薦一個鎖點(diǎn)數(shù)的簡化計(jì)算公式:設(shè)n一鎖點(diǎn)數(shù);W一扇寬;H一扇高;Wk一標(biāo)準(zhǔn)風(fēng)壓;安全系數(shù)一2.5倍,則n=WH2.5Wk/.8(個)計(jì)算示例:某地一建筑物,經(jīng)計(jì)算Wk為2.2KN/m2,求高1.2高、寬.6米的窗需要鎖點(diǎn)數(shù)量:N=1.2.62.52.2/.85(個)在確定鎖點(diǎn)數(shù)量后,需要根據(jù)門窗型材截面(詞條截面由行業(yè)大百科提供)形狀來選擇適配的五金類別。
新聞:建昌縣連接器組裝機(jī)專用步進(jìn)電機(jī)HSTM42-1.8-D-26-4-0.4交貨期

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不銹鋼標(biāo)準(zhǔn)件緊固件是一個包含廣泛產(chǎn)品的特定名詞概念,不銹鋼標(biāo)準(zhǔn)件緊固件因其美觀、經(jīng)久耐用、抗腐蝕力強(qiáng)等特點(diǎn),通常用在較貴重的機(jī)器零部件上做緊固用。隨著社會進(jìn)步,對不銹鋼標(biāo)準(zhǔn)件緊固件也提出了更高的要求。不銹鋼標(biāo)準(zhǔn)件緊固件不銹鋼標(biāo)準(zhǔn)件緊固件是一個包含廣泛產(chǎn)品的特定名詞概念,不銹鋼標(biāo)準(zhǔn)件緊固件因其美觀、經(jīng)久耐用、抗腐蝕力強(qiáng)等特點(diǎn),通常用在較貴重的機(jī)器零部件上做緊固用。隨著社會進(jìn)步,對不銹鋼標(biāo)準(zhǔn)件緊固件也提出了更高的要求。
新聞:建昌縣連接器組裝機(jī)專用步進(jìn)電機(jī)HSTM42-1.8-D-26-4-0.4交貨期
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