蝸桿減速機是一種具有結構緊湊,傳動比大,以及在一定條件下具有自鎖功能的傳動機械,是常用的減速機之一,其中,中空軸式蝸齒減速機不僅具有以上的特點,而且安裝方便,結構合理,越來越得到廣泛應用。中空軸式蝸齒減速機在蝸輪蝸桿減速器輸人端加裝一個斜齒輪減速器,構成的多級減速器可獲得非常低的輸出速度,是斜齒輪級和蝸齒級的組合,比純單級蝸輪減速機具有更高的效率。而且振動小,噪音低,能耗低。
蝸桿減速機適用范圍如下:
1.高速軸轉速不大于1500轉/分。
2.齒輪傳動圓周速度不大于20米/秒。
3.工作環境溫度為-40~45℃,如果低于0℃,啟動前潤滑油應預熱至0℃以上,本減速機可用于正反兩個方向運轉。
蝸桿減速器采用單級蝸桿減速傳動,符合行業推薦性標準JB/T7935—95(原國標GB9147—88),此標準達到九十年代水平。全系列共包括三種型號,16種中心距,12種速比。輸入功率范圍在0.39~189KW之間,輸出扭矩在107~13500N.m之間。圓弧圓柱蝸桿軸可正、反兩個方向運轉,輸入轉速不超過1500r/min,工作環境溫度為-40~40度。當工作環境溫度低于0度時,啟動前潤滑油必須加熱到0度以上;當工作環境溫度低于40度時,必須采取冷卻措施。
新聞:丹東無人機專用步進電機ST57H764全新
伺服電機軸承過熱現象的原因和排除方法:
1.故障原因
① 滑脂過多或過少;
② 油質不好含有雜質;
③ 軸承與軸頸或端蓋配合不當(過松或過緊);
④ 軸承內孔偏心,與軸相擦;
⑤ 電機端蓋或軸承蓋未裝平;
⑥ 電機與負載間聯軸器未校正,或皮帶過緊;
⑦ 軸承間隙過大或過小;
⑧ 電機軸彎曲。
2.故障排除
① 按規定加潤滑脂(容積的1/3-2/3);
② 更換清潔的潤滑滑脂;
③ 過松可用粘結劑修復,過緊應車,磨軸頸或端蓋內孔,使之適合;
④ 修理軸承蓋,消除擦點;
⑤ 重新裝配;
⑥ 重新校正,調整皮帶張力;
⑦ 更換新軸承;
⑧ 校正電機軸或更換轉子。
新聞:丹東無人機專用步進電機ST57H764全新

R×1K檔位狀態下,用萬用表的黑筆觸碰橋堆的任意一個引腳,紅筆則測試另外的幾只引腳。此時如果萬用表顯示為無窮大,則可以判斷黑筆碰觸的引腳為橋堆的輸出正極,如果顯示范圍在4K-1K歐姆,那么,黑筆所碰觸的引腳為負極,紅黑筆正負極判斷后,其余的引腳則是交流輸入。用萬用表判斷數碼管正負極發光數碼管主要是為顯示數字而設計,卻使用非常廣泛。那么,在檢修過程中,如何去判斷發光數碼管是否損壞?同樣的,這里依然可以使用萬用表檢測,使用的是R×1K檔及R×1K檔。
新聞:丹東無人機專用步進電機ST57H764全新

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主要是從展品中找出突出產品和適合做背景的紡織品,在商標的制作包括標牌、標志的制作上下工夫。使人一看就知道是什么牌子的產品,有什么特點,適合哪種人穿著。當然也不要忽視把這些靜物做活,使它充滿活力、飽滿具有立體感。平鋪直敘,毫無生氣的陳列與櫥窗的廣告、裝潢的意義相違背。服裝在干凈的版面上,設計些精心的裝飾,不要多,不要亂。燈光采取舞臺效果,幾個身著新穎款式的時裝模特,即可把各式服裝的優點展示出來,使人們產生追求美而合體的時裝的購物欲望。
新聞:丹東無人機專用步進電機ST57H764全新
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