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                                                    安陽機床廠家分析機床維修軸承故障檢測電路
                                                    作者:    發布于:2013-11-18 16:54:08    文字:【】【】【

                                                        機床在生產維修過程中,經常出現軸承磨損,機械卡殼,不能正常運轉現象。嚴重時,還會損壞零部件。安陽機床廠家介紹一種可供機修人員使用的軸承故障檢測器,維修人員根據檢測器上聲光的變化情況,可快速判斷出電動機軸承運行中的故障,及時維修或更換。

                                                        (1)電路組成,該軸承故障檢測器電路主要由軸承檢測傳感器、信號處理電路IC1、發光二極管LED、晶體管VT、背頻放大集成電路IC2、揚聲器Y及有關阻容元件組成。

                                                        (2)電路原理接通電源開關S后,ICl通電工作,其4腳和12腳均輸出高電平,使VI導通,LED點亮,此時IC23腳無輸人信號,揚聲器Y不發聲。

                                                    安陽機床

                                                        當將檢測傳感器的探針與正在運轉的電動機軸承的金屬端蓋相接觸時,檢測傳感器將輸出一個隨軸承振動頻率變化而變化的交變信號,該信號從IC11腳輸入,經lC1內部電路放大、選頻延時、整形和觸發驅動后,從IC14腳和12腳輸出。lei4腳輸出的交變信號使VT工作在交替導通與截止的開關狀態,LED閃爍發光。IC1的⑩腳輸出的交變信號經IC2放大后,通過揚聲器Y發出聲音。

                                                        在軸承正常運轉時,LED長亮或閃爍發光,揚聲器Y發出連續平穩的聲音,若揚聲器Y的聲音忽高忽低且有間斷,LED斷續點亮,則說明軸承缺油或已損壞。

                                                        RP1用來調整信號處理電路的靈敏度。RP2用來調節揚聲器的輸出音量。

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