The horn of the concrete mixer is closed inside and belongs to small and medium parts of the car, which is easy to be damaged. Therefore, care must be taken carefully when using. Let's see what causes the horn of the concrete mixer to malfunction:

　　電磁線圈端子接觸不良：有些喇叭內(nèi)部電磁線圈漆包線端子接頭是鋁金屬鉚釘壓接連接的，非牢靠焊接連接，如果端頭漆包線上的絕緣漆處理不凈或鉚釘壓接不牢靠很容易產(chǎn)生虛接故障，導致喇叭工作不良。此種故障是喇叭質量原因，無法修復，只能更換新件。

　　Poor contact of electromagnetic coil terminals: some of the internal electromagnetic coil enameled wire terminal connectors of the horn are crimped by aluminum metal rivets, which are not firmly welded. If the insulation paint on the enameled wire of the end is not treated cleanly or the rivets are not crimped firmly, it is easy to produce virtual connection fault, which leads to poor working of the horn. This kind of fault is caused by the quality of the horn, which can not be repaired. Only new parts can be replaced.

　　密封不嚴易受潮：雖然自上料混凝土攪拌罐車喇叭內(nèi)部是密閉的，但如果密封不嚴清洗自上料混凝土攪拌罐車時進入霧氣或內(nèi)部空間空氣中有水蒸氣，水蒸氣很容易導致觸點受潮無法正常工作。

　　Airtight and susceptible to moisture: Although the interior of the horn of the concrete mixer is airtight, if the airtight cleaning of the concrete mixer enters the fog or there is water vapor in the air of the interior space, the water vapor will easily cause the contact to be damp and unable to work normally.

　　觸點燒蝕：如果長時間按喇叭易造成喇叭觸點燒蝕而產(chǎn)生阻抗，流過電磁線圈的電流減弱，自上料混凝土攪拌罐車電磁吸力下降無法吸引銜鐵帶動膜片正常振動，導致發(fā)音沙啞、甚至不響。但不斷按喇叭時，若瞬間強電流通過阻抗依然能正常工作，所以會時好時壞。

　　Contact ablation: if you press the horn for a long time, it is easy to cause the horn contact ablation and generate impedance, the current flowing through the electromagnetic coil is weakened, and the electromagnetic attraction of the concrete mixer car is decreased, which can not attract the armature to drive the diaphragm to vibrate normally, resulting in hoarse or even silent voice. However, when the horn is continuously honked, if the instantaneous strong current through the impedance can still work normally, it will be good or bad.

　　以上就是今天要介紹的會使自上料混凝土攪拌罐車出現(xiàn)故障的幾個原因，了解了這些會使機器出現(xiàn)故障的原因后，我們在使用它時一定要保護好它的喇叭，避免以上的問題。

　　The above are several reasons that will cause the concrete mixer to break down. After understanding the reasons that will cause the machine to break down, we must protect its horn when using it to avoid the above problems.