In order to ensure the normal operation of bridge cranes , companies must do a good job in the lubrication and maintenance of the cranes. Today I will talk to you about the lubrication and maintenance of bridge cranes.
Bridge crane manufacturers produce a variety of lifting machinery and equipment for the market. Bridge cranes are even more common lifting machinery and equipment. Good management of bridge cranes can give full play to the efficiency of bridge cranes, increase their productivity, and ensure Product quality in the production process, cost reduction and energy consumption, all have inestimable economic significance. The lubrication of bridge cranes is an important part of the maintenance and use of lifting equipment.
Crane maintenance and lubrication is one of the important contents of daily maintenance work. The quality of lubrication not only directly affects the operation of various mechanisms and the life of parts, but also affects safety production and production efficiency. Therefore, operators and maintenance personnel must frequently check the lubrication conditions of the crane's lubrication points, and add and replace lubricants on time.
The principle of lubrication work should be followed: where there is a dynamic fit of the shaft and the hole, as well as the mechanical part with the friction surface, it must be regularly lubricated. Due to the different operating conditions (utilization rate and use environment, etc.) of the crane, the lubrication of different parts is required. It should be properly grasped according to the specific situation.
The lubrication methods of each mechanism of the bridge crane are divided into decentralized lubrication and centralized lubrication.
Small and medium-sized cranes generally use dispersed lubrication. When lubricating, use an oil gun or an oil cup to fill each lubrication point with oil. The advantages of decentralized lubrication are: simple structure, reliable lubrication, convenient maintenance, easy purchase of lubricating tools, standard specifications, and lower cost. The disadvantages are: the lubrication points are scattered, it takes a certain time to add grease, there are many exposed points, and it is easy to be covered by dust or blocked by foreign objects.
Large-lift cranes and metallurgical cranes mostly use centralized lubrication. Centralized lubrication is divided into two types: manual pump refueling and electric pump centralized refueling. Centralized lubrication can be lubricated regularly and quantitatively. A centralized supply of multiple lubrication points from one place can reduce maintenance workload, improve safety and maintain environmental sanitation. The disadvantage is that the structure is complex and the cost is high.
Lubricants must be kept clean during use. Check carefully before use. Do not use them when impurities or stolen goods are found. Pay attention to the changes of lubricants during use. If it is found to have deteriorated and become invalid, it should be replaced in time.
Frequently check the lubrication system and the sealing condition of each part and the grease feeding situation carefully.
The lubrication point with higher temperature should increase the number of lubrication and install a temperature isolation or cooling device.
The rotating parts of each mechanism without oil filling points should be filled with oil into the rotating gaps with oiling tools as needed to reduce wear and prevent corrosion
Base-resistant grease should not be used in damp places, because of its strong water absorption and easy failure
The pressure grease injection method should be used to ensure that the lubricant enters the friction surface. If the grease does not condense smoothly, the dilution method can be used to dredge
Lubricants are divided into three categories: lubricating oil, grease and solid lubricant:
Lubricants are the most widely used liquid lubricants. Commonly used lubrications on bridge cranes include mechanical oil, gear oil, cylinder oil, etc.
Grease is a colloidal lubricating material, commonly known as butter and dry oil. It is made by mixing lubricating oil and thickening agent at high temperature. It is actually thickened lubricating oil. Some greases are also added with oil additives.
Solid lubricants in Changzhou include molybdenum disulfide, graphite, tungsten disulfide, etc.
The enterprise must establish a complete crane management system, assign special personnel to maintain and maintain the bridge crane in a good working condition.
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