讲解振动压路机运行中的电路故障.doc

讲解振动压路机运行中的电路故障在压路机电路中，两个关键的名词值得提一提，即短路和断路。所谓的短路就是指电路中电流没有经过用电设备，直接由电源的正极接至电源的负极，构成回路；断路就是指电路中的用电设备、电源正、负极构不成回路。压路机的整机工作额定电压一般为12V或24VDC，单线制，负极接车架。In roller circuit, two key nouns is worthy of mention, the short circuit and open circuit. Short circuit means circuit current without the electricity equipment, directly from the positive connected to the power of the cathode of the power supply, constitute a loop; Open circuit in the circuit) is an electrical equipment, power supply positive and negative no loop. Working roller of the machine rated voltage of 12 v or 24 VDC, the single wire system, cathode frame. 在压路机上，短路故障表现为：接通开关后熔丝烧断，或导线发热有烧焦味，甚至冒烟、烧毁。产生短路的主要原因通常是导线绝缘损坏，电器导电零件、线头裸露部分或脱落的线头与车体接触等；断路故障表现为：熔丝完好，但接通电路开关后用电装置不工作，产生的主要原因，通常由于线头脱落，连接处接触不良，开关失效，导线折断，该搭铁处未搭铁，插头松动或油污等，造成电路不通。On the roller, the short circuit fault is shown as: after turn on the switch, fuse, or wire fever has a burning smell, smoke, even destroyed. Short circuit of the main causes are usually wire insulation damage, electrical conductive parts, thrum exposed the thrum of the fall off part or contact with body, etc.; Open circuit fault is shown as: fuse in good condition, but after processing circuit switch power device does not work, the main reason, usually because the thread off, joint contact undesirable, switch failure, wire broken, should take place without iron, iron plug is loose or oil and so on, caused the circuit impassability. 另外，较为常见的电器故障还有：电压表无指示、电压指示过高或过低；燃油表不显示、指示不稳定或满偏；气压、机油压力表指示过高、无指示；水温表、油温表指针指示数值偏低，读数不准失效等等。In addition, the more common electrical failures and: voltmeter is no directions, voltage too high or too low; Fuel gauge is not displayed, indicating instability or partial; High air pressure, oil pressure gauge indicates, without instructions; Water thermometer, the oil temperature, somewhat low indicating value table pointer readings are not allowed to failure, etc. 当出现以上故障时，首先应检查仪表及传感器的线路是否有松脱现象，线路中的熔断片是否正常。When the above problems, first check the instrument and sensor line whether there is loose phenomenon, lines of fuse link is normal. 电压指示过高时，检查电源系统的发电机输出电压，如过高应调整，检修或更换发电机调节器，检查电压表，如失灵则应进行校正。电压指示过低时，检查电源系统的发电机，如不发电或输出电压过低，应检修发电机或调整、检修、更换发电机调节器，检查发电机输出电路，若有搭铁处，应修理好检查电压表，如失灵，应进行校正。High voltage indicator, check the generator output voltage of power supply system, such as too high should adjust, repair or replace the generator regulator, check the voltage meter, such as the failure should be corrected. Low voltage indication, check the power supply system of generators, such as no power or output voltage is too low, should repair generator or adjust, repair, replace the generator regulator, check the generator output circuit, if there is a iron, should be repaired to check voltmeter, such as failure, should be corrected. 酿酒设备燃油表不指示的故障原因是：传感器内可变电阻丝断；浮杆在油箱中卡死；导线断或接头脱落；燃油表表头指针卡死，接地不好等；若指针总指在“F”位置，其现象为接通点火开关后，不论油箱中油量多少，表针均为F位置，拆下传感器接线柱上的导线搭铁验，若指针回到“E”位，说明锅炉配件传感器内部断路，应更换传感器；指针仍不回“E”位，可将燃油表的负极接线柱搭铁试验，若回“E”位，说明燃油表至传感器间导线断路，可查找出断路处并连接好。The fuel table does not indicate the cause of the problem is: variable resistance are broken inside sensor; Float rod stuck in the fuel tank; Wire is broken or joint fall off; Head pointer jammed fuel table, grounding is bad, etc.; If pointer always refers to the F position, its phenomenon is switched on after the ignition switch, no matter how much medium oil tank volume, whose hands are F position, remove the sensor on the terminal wire iron test, if the pointer back to the E, shows that internal circuit of sensor and sensor should be changed; Pointer is still not back to E, but will fuel meter iron negative terminal take a test, if back to the E, and that between fuel gauge and sensor wire break, you can find the cut-off and connect well. 机油压力表指示过高、无指示的故障，必须先检查线路中熔断丝是否完好。如熔断丝正常无损，可将机油压力传感器上的接线端子拆下，直接搭铁，观察指针是否平稳上升(操作时注意勿使表头指针冲击过猛，以免损坏表头)。如指针平稳上升，则可确定压力传感器内部有故障，必须更换。如熔断丝正常无损，可将机油压力传感器上的无纺布水性油墨接线端子拆下，直接搭铁，观察指针是否平稳上升(操作时注意勿使表头指针冲击过猛，以免损坏表头)。如指针平稳上升，则可确定压力传感器内部有故障，必须更换。Engine oil pressure gauge indicates the failure is too high, no order, you must first check fuse in the circuit are in good condition. If fuse in normal condition, can the terminals on the engine oil pressure sensor to be removed, directly take iron, observe whether pointer is rising steadily (operation make the meter pointer from hit too hard, so as to avoid damage to the header). If the pointer is rising steadily, can determine the inside pressure sensor is faulty, must be replaced. If fuse in normal condition, can the terminals on the engine oil pressure sensor to be removed, directly take iron, observe whether pointer is rising steadily (operation make the meter pointer from hit too hard, so as to avoid damage to the header). If the pointer is rising steadily, can determine the inside pressure sensor is faulty, must be replaced. 我们在保证水温表和油温表内的接线良好的情况下，若出现指针指示数值偏低，可将传感器接线柱上的连接线拆除，进行断路试验：若指针仍指到最低值，则表明指示表至传感器之间连线有搭铁，应修理或更换导线；若指针转到高值处，则表明传感器内部有搭铁，则应更换传感器。对于指针指示数值失准，则可能是指示表与传感器未正确配套，或是指示表、传感器性能不良（如表内线圈烧坏造成短路或传感器的热敏电阻衰老变质），我们应及时更换。We guarantee water thermometer and the oil temperature in the table under the condition of the wiring is good, if the value is low, the pointer directives can remove the sensor on the terminal connections, open circuit test: if the pointer is refers to the lowest level, indicates indicator between sensor and connection with iron, should repair or replace wire; If a pointer to the high value area, suggests that sensor inside with iron, you s