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　　起(qi)重(zhong)(zhong)機(ji)聯軸(zhou)器(qi)用于(yu)連接(jie)2根軸(zhou)，使其(qi)起(qi)旋轉(zhuan)(zhuan)，并(bing)傳(chuan)(chuan)(chuan)(chuan)遞(di)扭矩(ju)(ju)。起(qi)重(zhong)(zhong)機(ji)大車(che)(che)運(yun)行機(ji)構中，當電(dian)動(dong)(dong)(dong)機(ji)通電(dian)時產生(sheng)電(dian)磁轉(zhuan)(zhuan)矩(ju)(ju)，通過制(zhi)動(dong)(dong)(dong)輪聯軸(zhou)器(qi)、傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)軸(zhou)、齒輪聯軸(zhou)器(qi)將(jiang)轉(zhuan)(zhuan)矩(ju)(ju)傳(chuan)(chuan)(chuan)(chuan)入減速(su)器(qi)內，經齒輪傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)減速(su)后傳(chuan)(chuan)(chuan)(chuan)遞(di)給低速(su)軸(zhou)齒輪聯軸(zhou)器(qi)并(bing)帶動(dong)(dong)(dong)車(che)(che)輪組中的(de)車(che)(che)輪轉(zhuan)(zhuan)動(dong)(dong)(dong)，在大車(che)(che)輪與(yu)軌道頂面間產生(sheng)的(de)附著力作用下，使大車(che)(che)主動(dong)(dong)(dong)輪沿大車(che)(che)軌道頂面滾動(dong)(dong)(dong)，進(jin)而帶動(dong)(dong)(dong)整臺(tai)起(qi)重(zhong)(zhong)機(ji)運(yun)行。