Crane as a large-scale special machinery and equipment, in the daily operation of frequent load operation, the components are subjected to great pressure and wear, so do a good job of its lubrication and maintenance work is critical. This is not only about the crane's own performance and life, but also on production safety, efficiency and cost has a profound impact.
Types of lubricants
Cranes commonly used lubricants are mainly lubricating oil and grease. Lubricating oil is the most used liquid lubricants, such as mechanical oil, gear oil, cylinder oil and so on belong to this category. Mechanical oil has good lubricating properties and a certain degree of oxidation, corrosion resistance, suitable for general mechanical lubrication; gear oil for gear transmission characteristics, there are higher extreme pressure anti-wear properties, can effectively reduce gear wear; cylinder oil is specifically used for cylinder lubrication, to protect the normal operation of the cylinder. Grease is a gelatinous lubricating material, commonly known as grease or dry oil, it is good adhesion and sealing, can form a protective film in the lubrication area to prevent impurities and moisture from entering, reduce component wear and corrosion.
Lubrication maintenance significance
Do a good job of crane lubrication maintenance is of great significance. On the one hand, it can give full play to the crane's performance, making it run more smoothly and efficiently, and then improve productivity; on the other hand, it can ensure that the crane does not fail in production, reduce downtime, reduce maintenance costs and lost labor. At the same time, the lubrication work is also the key content of crane maintenance and use, to extend the service life of the equipment, to ensure production safety is of great significance.
Lubrication basic requirements
Crane lubrication is one of the core of the maintenance work, lubrication directly affects the operating performance of the institutions and the life of the machine parts, but also related to safe production and efficiency. Operators and maintenance personnel must attach great importance to frequently check the lubrication point, supplement and replace the lubricant on time. Lubrication and maintenance need to follow certain principles, where there are shafts and holes dynamic joints and friction surfaces of the mechanical parts, should be lubricated on a regular basis. Moreover, due to different conditions of crane use (such as utilization rate, use of the environment, etc.), different parts of the lubrication should be flexible according to the specific circumstances.
Lubrication maintenance method
Small and medium-sized cranes are mostly decentralized lubrication, even if the lubrication points are oiled with oil guns or oil cups, this way of operation is simple, but the efficiency is relatively low. Heavy cranes, European cranes and other cranes usually use centralized lubrication, which is divided into manual pump refueling and electric pump centralized refueling two kinds. Manual pump refueling requires the operator to manually operate the oil pump on a regular basis; electric pump centralized refueling through the electric pump automatically lubricant delivery to the lubrication points, high refueling efficiency, lubrication uniformity, suitable for lubrication points are more, higher requirements of heavy cranes.
Lubrication precautions
In the crane lubricant use process, to keep it clean, carefully check before use, found impurities or dirt can not be used. At the same time, it is necessary to frequently check the lubrication system and the sealing status of each part as well as the condition of grease transmission, and deal with the leakage problem in time. For lubrication points with high temperature, increase the number of lubrication times, and install temperature insulation or cooling devices to prevent lubricant deterioration. There is no oil injection point in the rotating parts of each organization, should use the oiling tool to add oil into the rotating gap as needed to reduce wear and tear and prevent corrosion. Sodium-based grease should not be used in wet places because it is easy to fail due to its strong water absorption. Pressure grease injection method, to ensure that the lubricant into the friction surface, if the grease condensation is not smooth, can take the dilution method to dredge.
In short, the crane lubrication maintenance is a systematic and important task. Only the correct choice of lubricant, follow the principle of maintenance, using the appropriate way and pay attention to related matters, in order to ensure safe and efficient operation of the crane, to provide a strong guarantee for the development of enterprise production.
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