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How to "stay off the heat" in the sun-burning agricultural machinery?
[ China Agricultural Machinery Industry News ] As the weather gets hotter, people are thinking about how to avoid the heat. Like people, agricultural machinery also needs to spend the summer, so how can agricultural machinery avoid "heatstroke" in the hot summer? High temperature in summer and agricultural machinery working in high temperature environment, pay special attention to the following problems:
How to use the sun in the sun?
1, cautiously handle "opening the pot"
When the cooling water is “openedâ€, be careful. The correct treatment method: make the engine run at medium speed, open the radiator cover, and release the hot air. After cooling down, slowly add cold water. When opening the radiator cover, the operator should stand in the upwind position, and the face should not face the water inlet to avoid being burnt by the high temperature water vapor.
2, keep the cooling system clean
Thorough descaling and cleaning of the cooling system should be carried out before the arrival of summer, so that the water pump and the radiator pipe are unblocked to ensure the normal circulation of the cooling water. In addition, the weeds and other materials remaining on the surface of the radiator should be cleaned up in time.
It is necessary to clean the oil surface of the engine in time: if the oil is too thick outside the engine, it will affect the heat dissipation, and the hidden troubles of various parts and components will be buried. The high-pressure injection method will clean the engine parts without cleaning the cleaning parts of the body parts.
3, to prevent water leakage
Water leakage in the cooling system occurs mostly at the pump bushing. At this time, the water seal nut should be properly tightened. If it is invalid, it indicates that the filler has failed and should be replaced in time. The filler can be wound with a asbestos rope coated with graphite powder.
4, pay attention to the tightness of the belt
If the fan belt is too loose, it will slip easily, causing the speed of the fan and the pump to drop, resulting in insufficient wind. If the fan belt is too tight, the bearing load is too large, which increases wear and increases power consumption. Generally, when the thumb is pressed in the middle of the belt, the belt sag is 10 to 15 mm. Too loose or too tight should be adjusted in time.
5, the correct use of temperature control device
The temperature control device has two types: automatic (such as thermostat) and manual (such as thermal curtain and blinds). Some drivers think that the summer is hot, the lower the water temperature, the better, so the thermostat is removed. In doing so, the warm-up time of the engine will be greatly extended when the cold car is started, and the wear of the parts is accelerated. Therefore, the thermostat should not be removed during the summer. Insulation curtains and blinds are used to adjust the amount of air passing through the radiator. In summer, the curtains should not be used, and the shutters should be placed in the fully open position.
Look at the water temperature gauge to prevent water shortage: driving in high temperature weather, the water evaporation in the water tank is accelerated, always pay attention to check the cooling water volume, pay attention to the water temperature gauge. If you are short of water, you should immediately start the idling and cool down, then add water, and be careful not to open the radiator cover immediately to prevent burns.
6, the correct choice of oil
In summer, the temperature is high, and diesel with a higher freezing point can be used. In addition, special attention should be paid to preventing the oil supply system from leaking oil, because the oil leakage not only causes waste of oil, but also may cause fire. In addition to diesel, lubricating oils and greases should also be selected for summer use. Some tractors have an oil temperature reversing valve. When changing seasons, the reversing valve should be turned to the position where the oil is led to the oil radiator.
Oil oil anti-deterioration: Lubricating oil is easy to be heated and thinned, has poor oxidation resistance, is prone to deterioration, and even causes failures such as burning the shaft. Therefore, the crankcase and the gearbox should be replaced with summer lubricating oil, and the quantity of lubricating oil and oil quality should be checked frequently and replaced in time.
7, pay attention to the maintenance of the battery
In summer, the water in the battery electrolyte is easily evaporated, and special attention should be paid to the inspection of the battery level. The normal liquid level should be 10 to 15 mm higher than the plate. The electrolyte density of the battery should be adjusted to be small according to the regulations. The ventilation holes on the filling port cover should be more dredged. In addition, batteries that are not in use should be stored in a cool, ventilated place.
8, anti-fuel gas resistance
The higher the temperature, the faster the evaporation, and the easier it is to form a gas barrier in the oil path. Therefore, in the summer, the fuel filter should be cleaned in time to keep the oil passage unblocked. A wet cloth can be placed on the fuel pump during driving, and the water can be wetted regularly to reduce the air resistance. Once the air resistance is generated, stop immediately and cool down to fill the oil circuit with fuel.
9, anti-engine deflagration
If the engine is detonated due to overheating, the wear on the upper part of the cylinder will increase by 3 to 5 times. Therefore, it is necessary to thoroughly remove the carbon deposits in the combustion chamber, valve head, etc., check and adjust the oil supply and oil supply time to prevent explosion. Explosion-proof tires for cold body: The summer temperature is high, the tire rubber is easy to age, and there will be a puncture phenomenon in severe cases. Therefore, the tractor should check the tire pressure at any time during driving. If the tire is overheated and the air pressure is too high, the car should be parked in a cool place to cool down. Do not use cold water to pour it, nor put it on, otherwise it will cause a tire burst on the way.
10, fire prevention
Always check the tightness of each wire and fuel pipe joint to prevent sparks caused by poor contact or fuel pipe leakage. Do not use plastic drums to hold oil to prevent static fire. In case of lightning, the fuel tank oil must not be overfilled to prevent spillage.