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1. Use heavy ropes to hang heavy objects. When repairing tractors, common people use hemp ropes, nylon ropes, triangle belts, etc. to unload engines and gearboxes. This is very unsafe. The right thing to do is to use a solid wire rope, etc., and it must be firmly secured.
2. The method of supporting the vehicle is improper. When the tire is damaged or replaced, support it with bricks, stones, wooden blocks or a single jack. The correct approach is to use the jacks and solid wooden piers to lift the frame at the same time, and the front and rear wheels must be locked with triangular wood or larger stones to prevent the vehicle from moving back and forth, supporting the collapse of the wounded. This kind of maintenance is best done on a solid ground to prevent tipping and hurting people.
3, tire inflation operation is not correct. 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, lock ring and retainer ring together with a chain lock before inflating; and also to inflate one side of the retainer ring toward the ground or wall to prevent the rim from being wounded.
4, welding oil container does not wash residual oil. In the welding oil container, the residual oil in the container must be washed beforehand, otherwise it will cause explosion when welding. Cleaning method is to use alkali water or hot water plus 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, open all lids first. When cleaning large tanks, people who enter the tanks must wear long-sleeved clothes. They must not barefoot and must wear protective bands and signal ropes. The working hours in the tanks should not be too long. Special care should be provided outside the tanks. 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.
5, repair the brake operation error. When the brakes are repaired, the hand and foot brakes are repaired at the same time. The body is unstable and it is easy to hurt and hurt. The correct operation should be that the brakes of the hands and feet are separately repaired 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 equipped with triangular wood trucks to prevent slipping.
6, debugging engine ignores safety. When commissioning the machine, personnel approach dangerous parts such as fans, belts or exhaust pipes, or place tools and parts on the machine to cause injuries and damage. To debug the people's clothing to be neat, women must cover their hair, and non-debugging personnel should keep away from the machine. During commissioning, try to stop as much as possible. In the lower part of the machine, the commissioning must be turned off. The person who must perform debugging should be assigned to guard the operating mechanism to prevent the outsider from starting. Before commissioning, the operator should check the tools and parts and send a signal.
7. Maintain the violation of the transmission mechanism. Common are: hand or other objects extending to the transmission parts; belt joints are not firmly installed during the operation of the belt hanging; with a hand pull belt; adjust the belt tightness when the machine does not turn off; across the belt.
8, improper maintenance of suspension equipment. The common ones are: When suspending the implements, after the suspending implements have not landed and stopped, the medium-sized accelerator is used when the suspending implements are attached, the mounting speed is too fast, the hand gestures are not paid attention to, or the vehicle is not ready to stop at any time. During maintenance, the soil is removed or removed; when the lower part of the suspension implements is repaired, the flame is not stopped, and the support is not firm. These practices are very dangerous and should be eliminated.
9, start the operation with the start rope mistakes. For example, if you use a revolving rope to pull a rope around your hand, or an automatic rope winds over 1.5 times around the flywheel, when you turn the flywheel by hand, it will continue to be oily and cut off, and it will turn too fast, causing a sudden burst, rebound, and injury to your fingers.
Nine Unsafe Operations in Farm Machinery Maintenance