The use of alternators to pay attention to the top Tiantai County Agricultural Machinery Management Station 317200 Chen Xiaoshu's existing cars and tractors mostly use alternators. Because there are several electronic components in the alternator and regulator, special attention should be paid to the following points in use and maintenance.
It is not allowed to connect the polarity of the grounding of the battery. The alternators all use negative ground. If the polarity of the battery ground is incorrect, it will cause the battery to discharge a large current through the generator's rectifier and burn out the pole tube.
It is not allowed to connect the wrong connection between the regulator and the generator. Because there are many types of alternator regulators, the alternator itself can be connected. If you connect the wrong line, it will cause the regulator to be burned or the voltage cannot be established. Most of the terminals of domestically produced alternators and regulators use Chinese characters to designate magnetic field armature grounding. The imported cars use letters, such as armature binding posts with 8 or 0, and magnetic field binding posts with iron posts.
No faulty operation is allowed. When the generator does not generate electricity or the charging flow is too small, it should be a clear cause and troubleshooting should be continued. Otherwise, the pole tube will be burned, and the stator windings of the generator will be burned in severe cases.
High power soldering irons are not allowed. The alternator and regulator electronics often burn out due to overheating. In the welding of the connection or the polar tube, the power of the soldering iron is not more than 45 watts, and it should be noted that the welding time should not be too long.
Do not disconnect components or lines while the generator is running. When the generator is in normal working condition, its internal electronic components are in a stable working state. If the line is disconnected during its operation, it will cause the work to lose control; at the same time, when the generator is disconnected, it may easily cause a short circuit and burn out some sensitive electrical appliances. element.
Do not turn on the ignition switch for a long time while parking. When the engine is stopped after the engine is stopped, the ignition switch should be turned off in a timely manner. Otherwise, the battery current will discharge through the regulator to the generator's excitation winding for a long time, causing the excitation winding and the regulator to burn out.
If the engine appears to be classified as confidential and correct, the use of the surface, such as the cylinder block, should be selected, which will affect the engine's dynamic performance and economic performance.
The type of leakage of the engine may occur, that is, the combination of leakage and leakage of the leaking rotating part of the county-type thread matching part and the cracking of the housing and the channel, and the lack of material leakage of the material. Ignore 9 glue to solve.
1. Selection of sealant (1) Joint surface leakage type i It includes the combination of the gap and the place where the gasket is used, such as the combination of the cylinder block and the cylinder head. This type of leakage is the most common with interface leakage. The sealant used for joint surface leakage is preferably a polymer liquid sealant. Specifically, the vibration combination of 609, often disassembled joint surface should be selected 601602, low temperature joint surface selected 603, high temperature combined and should be selected 60 polymer liquid sealant has good fluidity and wetting, can effectively fill to In the depression or gap of the joint surface, a certain adherent thin layer or strippable film can be formed between the metal surfaces, which can solve the leakage caused by the solid cushion itself.
The thread leakage type should be used for leakage treatment of thread leakage type. Anaerobic adhesive should be used because the anaerobic adhesive has good wettability and strong permeability. The expansion coefficient is close to the part. Commonly used anaerobic adhesive has 150,1 production by Dalian Rubber Factory 1 The Guangzhou Chemical Research Institute produces anchors 350300. The anaerobic adhesives produced by Shanghai Xinguang Chemical Factory can quickly seep into small gaps before being cured. They quickly solidify after being isolated from the air and fill in the gaps between the parts in the form of thin films. This mucous membrane does not form new voids. Moreover, the cured anaerobic adhesive film polymer has good corrosion resistance to acids, alkalis, oils, organic solvents, and the like, and has the advantages of small room-curing curing toxicity, small error prevention, strong anti-loosening force, and the like, so that it can play well The sealing effect.
Leakage at the rotary part is mainly caused by the occurrence of grooves in the journal due to leakage at the rotating part, so it should be repaired using a size recovery glue.
The general parts are made of silicon sealant, aluminum alloy pieces, steel shafts or rubber sealants. Size recovery glue has a strong ability to carry out squeegee and other mechanical processing on a variety of metals, and can obtain high dimensional accuracy and surface finish, high mechanical strength and strong corrosion resistance and heat resistance Sex. Therefore, the size recovery glue can be used to repair the wear and corrosion parts of the mechanical parts, so that the parts can be restored to their geometric shapes and fitting accuracy, thereby solving the leakage of the rotating parts.
Shell pipeline rupture and leakage of material defects for this type of leakage can use adhesive repair, governance, adhesives according to the main material of the chemical properties can be divided into organic and inorganic plastic two major categories. At present, the organic glue commonly used in agricultural machinery repair is epoxy resin, such as agricultural machine 1 farm machine repair glue, and inorganic glue is phosphoric acid type. After the adhesive is applied to the defect site, the physical diffusion of the molecules through mechanical connection, etc.
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