Analysis and treatment of locomotive diesel engine 2 s 3 years locomotive air compressor without wind failure Liang Bin Zhuzhou Vehicle Factory, Hunan Zhuzhou 0031 fault finding idea The main circuit diagram of the air compressor of the 10 type hydraulic transmission diesel locomotive and the air compressor start The schematic diagram of the control relationship is shown in Figure 1. When there is a failure in the air compressor that does not hit the wind, we use the two lines shown in the control relationship diagram to analyze the problem. The basic idea is as follows: It is to check the starting line along the air compressor. Check, 0 machine, power amplifier block, air compressor start contactor, insurance. If there are no problems, check the main circuit. The second is to find along the main circuit, the motor of the air compressor, the terminal block of the motor junction box, the lug, and the motor winding. 2 Analysis and processing of faults In the actual maintenance process, the following steps can be taken: Look at the safety circuit on the starting circuit of the air compressor. If it is broken, you need to replace it with new insurance. Look at the air compressor in the main circuit to start the contactor 1 to throw: or 2 whether to pick up. If F is sucked, it means that the air compressor on the lower part of the line may have a problem, or the insurance is blown. Just change the fermentation air compressor unit first, or change the insurance. If F does not pick up and the problem is not on the air compressor, then it is necessary to go down and check the parts on the air compressor start control line. After confirming that the anti-injection is not taken, look at the control line [Author Simplifies Liang Bin 1 Q9], whether the main circuit of the air compressor has an input signal, that is, whether the X, X40, X31, Xl4 lights are on. X31 indicates the air compressor relay conduction signal, and X37 and X40 indicate the air compressor start signal. At the same time, the air compressor is about to start. That Haishan indicates whether the 14 lights of the air compressor undervoltage start signal input are on. If these signal input lights are not lit, the problem is reduced to the front of the P machine. Then, check each component on each input signal line to determine whether there is a disconnection, loose or damaged connection, and then determine whether to replace the new one. Just fine, no more praise here. Go down to page 48, 1 Jun, Changsha, Hunan, senior engineer. Measures to improve the quality of the process and prevent the quality of the parts from being damaged; ◎ Improve the working environment of the components and reduce the adhesion of dust and oil to the working life. 2.2 Excitation regulator 2. 2. 1 excitation domain regulator power instability When the excitation controller is in the 1 position of the locomotive handle, the phenomenon of low excitation current is more common. The aspect is that the stability of the electronic components used in the excitation regulator itself is not high, and the parameter value is easily changed after the application of the period of time. In the debugging process on the test bench, the diesel engine speed signal and the locomotive are taken. There is a gap in the speed signal, and the overload regulator and underload phenomenon will occur after the commissioning of the excitation regulator after loading. Therefore, while improving the test bench and correcting the test parameters, the load test of the locomotive after the replacement of the excitation regulator is performed, and the power is re-corrected by the shake, which is a good method in the current state. 2.22 The main reason for the poor automatic transition of the excitation regulator is that the digital isolation module used in the existing vehicle is easy to burn. The digital isolation module is installed, and the 15V power supply is supplied to the locomotive speed sensor. Due to the unstable performance of the internal electronic components, some components are often burned, the isolation module is faulty, and the 15V power supply cannot be accurately output, so that the locomotive transition device has no speed signal. Unable to perform the transition. To solve this problem fundamentally: Can eliminate the digital isolation mode tampering by the excitation regulator itself: 2 using high-quality electronic components, the development of stable and reliable digital isolation module. 3 Conclusion The use of the 0-class 4 locomotive in my section for 5 years proves that the locomotive is generally reliable and safe to use. The above-mentioned quality problems need to be worked together in the mouth of the production department, the mouth of the scientific research department, the mouth of the operation department, and the maintenance department, and constantly improve and improve. Continued on page 41. If these lights are on, then check them out. Then look at the presence or absence of the output signal, that is, whether the ¥Q or 丫40 lamp is on. If the output signal light is off, the problem is that if the output signal light is on, then the corresponding function is checked to see if the corresponding indicator light on the power amplifier block is lit, and then the power amplifier block is judged to have a problem. If the power block light is off, there may be a problem with the power amplifier block 615. At this time, a new power amplifier block can be replaced, or the corresponding output line 401 and 459 or 401 and 461 lines for the air compressor start on the short-circuit power amplifier block can temporarily wind the air compressor. If the indicator light on the power amplifier block is on, check the air compressor start contactor 1 down: or see if they are in good condition. For air compressor start contactor throwing: check, you can use the method mentioned above to visually check whether they are sucked. If the contactor does not pick up, check if the coil of the contactor is burnt or the wiring is broken. Specifically, it is to see if there is a positive voltage of llOV on the starting contactor. When there is 11 voltage, it means that the power amplifier block is not broken, but the coil of the starting contactor is broken. In this case, the air compressors of this group cannot be used, and it is necessary to switch to another air compressor unit. If there is no ¥ voltage, it means that the power amplifier block is broken. In this case, the short-circuit short-circuit method can be used to make the 11¥ positive voltage skip the power amplifier block, and then turn on and add to the air compressor start contactor, so that the air compressor temporarily winds. However, it is necessary to pay attention to observe the wind pressure gauge in the driver's cab to be total, the wind pressure reaches 91 towers/2, and the short-circuit is disconnected immediately after shaking, and the air compressor is damaged by overpressure. If the contactor is sucked up, but the air compressor still does not wind, check the surface of the main contact of the air compressor start contactor to see if there is oxide or contact burn, and see if the contact surface is good. . If you find a problem, you should deal with the surface or replace it in time. If the main contact of the contactor is good, then the motor of the air compressor can be checked backwards to see if the wiring in the junction box is loose, and whether the terminal or wiring nose is burnt. Then determine whether to replace it with another set of air compressors, or replace the terminal or wiring the nose
Aluminum products made from aluminum and other alloy elements.the density is small ,aluminum and aluminum alloy is close to 2.7g/, about 1/3 of that of iron or copper.The conductive and thermal conductivity of aluminum is second only to that of silver, copper and gold.including a variety of type.
Aluminum CNC Machining Parts is the use of cnc machining out, including: drilling, boring, cutting, turning, screw. Product material are:aluminum(6061,6061-T6,6063,6083,7075.5052,6082,etc).In the high-speed machining out of the workpiece has a good finish. cnc machining products surface treatment has anodized(black, red, blue, yellow),sand blasting, laser engraving LOGO, powder coating,brushing, rolling flower, according to the special requirements of the drawings.We have a special inspection department to carry out inspection, to ensure that each size of products meet the requirements of the drawings,cnc machining parts is the most common in mechanical processing, low density, not easy deformation, high precision products.
CNC Machining Aluminum Parts,CNC Machined Aluminum Parts,Aircraft Spare Parts,Threaded Flange YaoPeng Metal Products Co., Ltd. , http://www.ypmfg.com