In our normal use, maintenance and maintenance of vehicles and refrigerators are inseparable. Only the proper maintenance and maintenance of the equipment on time can ensure the normal use of the equipment and prolong the service life of the equipment. Usually, the chassis engine is maintained and maintained according to mileage, and the refrigeration unit is generally designed for maintenance and maintenance according to the engine operating hours. The normal refrigeration unit is 500-700 hours for a maintenance and maintenance, need to replace the oil filter, fuel filter, air filter; and pay attention to check the tightness of the belt, whether the leakage of the refrigeration system; some brands of refrigeration units (such as In order to meet the needs of environmental protection, minimizing the damage to the environment and reducing the emission of harmful substances, the United States has used synthetic or semi-synthetic motor oil as an alternative to ordinary motor oil, thereby prolonging the maintenance time of the engine. It is usually done in 2000 hours. maintenance. As a result, the waste of used motor oil is reduced. In addition, scientific experiments show that by using this high-end engine oil, not only the wear of the engine is reduced, but also the fuel consumption of the engine can be reduced. How to maintain a refrigerated truck ? As a special vehicle, refrigerated trucks have some precautions that must be taken before driving to prevent unnecessary trouble during driving. The following inspections are recommended before every cargo loading: 1. Refrigerator vehicles must be supplied with diesel fuel or gasoline. Ensure that the engine runs to at least the next checkpoint. 2. The refrigerated car engine oil level is supplied at the (full) mark, do not over-fuel (replace once a year). 3. Refrigerant truck coolant Check the coolant level gauge to see if the amount of coolant is correct and the pointer should be within the white range. If the coolant level is in the red range, add coolant to the coolant tank. Usually the coolant is a mixture of ethylene glycol and water (according to the actual situation of the product used in different proportions), and should provide protection to -34 °C without freezing. Note: Do not open the lid of the coolant tank when the coolant is hot. 4. The battery terminal of the refrigerated truck must be firm and not corroded. The electrolyte should be at the full mark. 5. Belt straps must be good and adjusted to the appropriate degree of swell. The 13mm sag across the center between the pulleys. 6. Electrically inspect all electrical connections in the electrical control circuit to ensure they are securely fastened. Wires and terminals should be free from corrosion and cracking. 7. Structure Visual inspection of the unit for leaks, loose parts or breakages and other damage. 8. The gasket of the gasket unit should be tightly pressed and in good condition. 9. Refrigerated car coil condenser and evaporator coil should be cleaned. 10. Defrost Drain Check defrost drain hoses and fittings to ensure they are free. 11. The cargo can not block the evaporator outlet and return air inlet when loading the cargo compartment, and maintain the cold circulation of the cargo compartment to ensure that there will be no hot spots in the compartment. Therefore, scientific maintenance and maintenance can not only ensure the integrity of equipment, but also reduce operating costs. For non-ventilated containers for refrigerated goods, side-ventilated containers for fresh produce. The box must be compressive. Because the frozen goods do not allow the wind to blow from the surface, because the wind blows over the surface of the frozen goods, the moisture in the goods will be lost and the quality of the goods will decline. This year, our country has formulated "on the bulk frozen foods are not allowed to sell", there must be packaging sales is the reason. Due to its own characteristics, fresh products are still in a breathing state during storage and transportation. If they are not well ventilated, the goods will be deteriorating. Therefore, it must be ensured that such goods have good ventilation and ventilation (installation of ventilation slots in the compartment). Among the three components of refrigerated trucks , the refrigeration unit is the most important part. Because of the small space in the cargo space, the technical requirements for controlling the temperature are also higher. Say good goods are not cheap, the price of imported refrigerators is also very expensive, like the kind of semi-hanging refrigerated truck imported refrigerators, the new cheapest is also more than 100,000. In contrast, domestic brands have obvious advantages in terms of price. For users who pay attention to prices, domestic brands are also a good choice. The power source of the refrigeration unit can be divided into two types: independent and non-independent units. The independent unit has a separate power source. The diesel engine of the unit itself is used as its power source; the power output of the non-independent unit is based on the chassis of the car. Driven by the engine. From the standpoint of cost, the difference between the price of non-independent chiller units and independent chiller units is more than tens of thousands. If the budget is relatively abundant, and the temperature requirement in the vehicle compartment is relatively low (the required temperature is at least minus 10 degrees below), it is still recommended. It's better to use a standalone style. In life, many cargoes need to be frozen and refrigerated. Therefore, people have installed cold storage on transport vehicles. This is the appearance and development of refrigerated trucks and refrigerated trucks. It facilitates the refrigerated storage of goods during turnover. .
A driving pulley, in particular, is a powered wheel and axle that moves a conveyor belt. Also called belt conveyors, a conveyor belt is a loop of material that runs between two or more pulleys: drive pulleys and idlers. The purpose of conveyor belts is to move objects along the belt to another location. In the conveyor belt system, a drive pulley has power applied to it and an idler is a pulley that has no power. The drive pulleys will cause the belt to move toward them, while the idler pulley simply turns over and allows the belt to move. The power can be derived from a motor or can be provided by hand. The larger the materials or goods that are moved by the conveyor built the pulley is powering, the stronger the motor or other power source will need to be that drives the drive pulley.
A pulley is one of the six simple machines, along with an inclined plane, lever, wheel and axle, wedge and screw. The belts operated by drive pulleys typically have two or more layers and are usually made of rubber. The inside layer is the strong layer, called the carcass, that is next to the pulley, and the outer layer is called the cover. For strength, the carcass is usually made of cotton or plastic mesh and the cover is rubber or plastic.
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