There are several unsafe operations in farm machinery maintenance

First, use heavy ropes to hang heavy objects. In the maintenance of tractors, common people use hemp ropes, nylon ropes, triangle belts, etc. to hoist and unload engines and gearboxes, which is very unsafe. The correct approach is to use a solid wire rope. Tripods must also be firmly grounded. When suspended from a crane, no one can pass or stand under heavy objects. Second, the wrong way to support the vehicle. When tires are damaged or replaced, using bricks, stones, wooden blocks or supporting them with a single jack is not safe. The correct approach should be to use a jack and a solid wooden pier to lift the frame at the same time. In addition, the front and rear wheels are locked with triangular wood or larger stones to prevent the vehicle from moving back and forth, supporting the collapse and injury. This kind of maintenance is best done on a solid ground to prevent tipping and hurting people. Third, tire inflation is not safe operation. The tires are re-inflated after being disassembled and unprotected, causing the steel rims to pop and wound. The correct method is to lock the tire, the lock ring, the retaining ring and the rim together with a chain before inflation; it is also possible to inflate one side of the retaining ring toward the ground or the wall to prevent the rim from being wounded. Fourth, the welding oil container does not wash residual oil. For the soldered oil container, the residual oil in the solvent must be washed beforehand, otherwise it will cause explosion when welding. Cleaning method is to use alkaline water or hot water and vinegar, repeatedly washed 2-3 times, and control the net, dry and then welding. Do not blow dry with high-pressure air to prevent static sparks from detonating. When welding, all lids should be opened first. When cleaning large tanks, people who enter the tanks must wear long-sleeved clothes. They must not barefoot and should wear protective belts and signal ropes. The working time in the tank should not be too long. There must be special care outside the tank. After the person goes out of the tank, he must wash his face, wash his hands, gargle, and wash the clothes with alkali and then wash with water. Fifth, repair the wrong operation of the brake. When the brakes are repaired, hand and foot brakes are repaired at the same time, and the body is unstable, causing it to slip and hurt. The correct operation is to separately repair the brakes of the hands and feet so as to brake each other and ensure safety. The place to be parked should be solid and flat, and the front and rear wheels should be secured with triangles to prevent slipping. Sixth, debug the wrong operation of the engine. When commissioning the machine, personnel approached dangerous parts such as fans, transmission belts or exhaust pipes, or placed tools and parts on the machine to cause injuries or damage. Debugging personnel should wear neat clothes, ladies should set their hair up, non-debugging personnel should stay away from the machine, try to stop when debugging, must be turned off when debugging in the lower part of the machine, must dispatch personnel to guard and control the mechanism to prevent outsiders from moving; start after debugging Before you check the tools and parts, send a signal. Seventh, maintain the wrong operation of the transmission mechanism. Move the hand or other object to the transmission station; the belt joint is not firmly installed; the belt is lifted during the operation of the machine; the belt is pulled by hand; when the belt tightness is adjusted, the machine does not turn off; it crosses over the belt. Eight, the maintenance of suspension equipment error operation. When the suspension implements are being repaired, the suspension implements are not grounded or stopped; when the suspension implements are attached, the throttle is used, the mounting speed is too fast, and the gesture of attaching the operator is not taken care of, or the vehicle is not ready to stop at any time; in progress Maintenance or removal of dirt; in the maintenance of the lower part of the suspension, the flame is not stopped without stopping, and it is not strong. These practices are very dangerous and should be eliminated. Nine, using the start rope to start the wrong way. When starting with the start rope, start the rope to pull the rope around the hand, or start the rope around the flywheel for more than 1.5 turns; when the hand rotates the flywheel, it will continue to be oiled and cut off, and the rotation will be too fast, resulting in sudden burst, rebound and injury to the fingers . Tenth, the wrong operation started with the hand crank. When the serviceman cranks the engine by hand, separate the handle with the thumb and the other 4 fingers, instead of holding the handle with the 5 fingers together; lower the handle instead of lifting the handle; hold the handle with both hands; or Shake 1 week instead of 1/2 lap. Any such operation is improper and it is easy to damage the arm or fingers. In particular, it is more prone to strike back if the ignition advances too much or the overheating starts. Eleven, wrong operation when refueling. Smoking or ignition when filling fuel tanks or checking oil levels; lighting with open flames during refueling at night; such as portable lights, candles, lighters, torches, etc., instead of safety lights, battery lights, or electric lighting; on exhaust pipes when refuelling On one side, the oil droplets are not wiped out of the box and dripped on the clothes. They are close to the open fire or smoke when they are not dry. The fuel is fired and poured instead of sand, dry soil, canvas, sacks, etc. Gasoline mouth suction pipe, or contact with the mouth with oil parts, causing poisoning. 12. The wrong way to add water. Open the tank lid immediately when the engine is hot, especially in the open condition. Instead of turning the water release switch on, wait until the water pressure drops, then wrap the water tank cover with a towel, etc., and tilt the body and head to one side and unscrew it slowly. XIII. Incorrect operation of maintenance of electrical equipment. When repairing electrical equipment on a vehicle, repair is performed without removing the battery wire in advance, which can cause sparks and injuries due to the presence of live wire. When the electrolyte is prepared with a metal container, it is not a ceramic or glass container. The more erroneous method is dilution. When concentrated sulfuric acid is poured into the concentrated sulfuric acid to cause splashing of acid, the correct method is to slowly pour the sulfuric acid into the water. This must be strictly observed. XIV. Mistakes when excluding cars. After a car or a transplanter becomes stuck, the person stops or works in front of the car. Once the locomotive or transplanter is released from the car, it will suddenly cause injury and cause an accident. 15. Misoperation when disassembling the spring. Disassembly and assembly of clutch springs, valve lock clips, etc., without special tools, and picking up with a screwdriver, etc., will cause springs to pop and hurt people.

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