Today, rollers play an important role in the implementation of highway engineering projects. The use efficiency of the road roller plays a key role in the quality of road rolling. From this point of view, the operation and maintenance of the road roller equipment is critical. Correctly recognizing the misunderstandings existing in the maintenance work of road rollers and implementing scientific maintenance methods to ensure the normal operation of the road rollers are of great significance to the quality of highway engineering. This article provides a brief overview of the misunderstandings in the maintenance work of the road roller, and puts forward correct and reasonable maintenance measures.
1. Brief description of the performance and working principle of the roller
The road roller is a heavy mechanical equipment used for rolling compaction. Its working principle is mainly to compact the sandy, semi-clay soil or asphalt concrete pavement with the help of its own gravity. It is often used in traffic projects with higher grade requirements, such as highways, railways, river and sea dam bridge foundations, etc.
2. Misunderstandings in the maintenance of rollers
With the vigorous development of the machinery manufacturing industry, the continuous advancement of industrial technology, the continuous advancement of the country's urbanization process, the use of road rollers has become more and more extensive. However, during use, failures and problems are unavoidable, which is very important for the maintenance of the roller. However, due to the misunderstanding of the maintenance work by the technical maintenance personnel, the performance of the roller is even worse. The following is the maintenance of the roller. Briefly explain the misunderstanding:
2.1 The periodic replacement of lubricants is not timely
For heavy machinery like rollers, due to long-term work in a heavy-load environment, the wear of mechanical parts is relatively serious, and lubricating oil is an important factor to ensure that its mechanical wear is reduced to normal, and it is also important to ensure the normal operation of the roller Factors, in the long-term use of the roller, it will cause a large amount of mechanical wear impurities in the body and the oil pan. In addition, if the lubricating oil used for a long time is not replaced in time, it will also contain a large amount of impurities. It may lead to more serious mechanical wear. Therefore, the damage to the machinery caused by the untimely replacement of lubricating oil is very serious.
2.2 Abnormal operation of the bolt ground and tire pressure control in place during maintenance
Maintenance personnel play the most direct role in the maintenance work of the roller. However, in the maintenance process, some maintenance technicians often tighten the screws too tightly or in order to ensure the stability of the connection between the mechanical components. The pneumatic pressure of the tire is overcharged. This starting mentality is also to achieve safety and stability, but the negative impact is more obvious. The mechanical connection is too tight, which will cause the bolt to break and slip. The excessive pressure will cause the tire tension to be too high. If it is not conducive to the normal use of the roller, there are certain hidden safety risks.
2.3 Improper temperature control of the roller tank
The temperature control of the water tank of the roller directly affects the performance and durability of the water tank equipment-the cylinder. However, during the operation of the project, the long-term operation of the machine will inevitably consume a lot of water. When adding water to the water tank, the water temperature in the water tank is very high, usually in a boiling state. At this time, due to the technology The neglect of the water temperature drop by the personnel and the sudden addition of cold water cause the temperature of the water tank to drop sharply, and the rapid change of cold and heat is very unfavorable to the tank body and greatly reduces its durability.
2.4 Improper use of lubricating grease
The equipment of the roller has its own special requirements. Among them, the cylinder gasket has extremely high requirements for sealing. But when installing cylinder head gaskets, there are extremely high requirements. In order to ensure the smooth installation, some technicians often apply grease when installing. When the cylinder head bolts are tightened, due to the squeezing between objects, part of the grease will enter the cylinder water channel. The temperature in the cylinder is Extremely high, in this case, the grease will be easily carbonized for a long time under high temperature, and the consequences of carbonization will damage the cylinder gasket, and then the change will cause the air leakage of the cylinder, and the consequences are unimaginable.
2.5 Improper operation of hydraulic system and selection of oil
The choice of fuel directly determines the working performance and efficiency of the engine. The lighter often chooses light diesel, and light diesel also has different grade models. The performance of different models varies greatly, but some technical personnel often think about it when choosing. As a result, unsuitable oils were selected, which caused many difficulties in the later maintenance. The hydraulic system is the core system in its work. Here, the control of the system frequency and the control of mechanical horsepower are extremely critical to the durability of the mechanical performance. Improper operation is very detrimental to the long-term operation of the machinery.
3. Correct maintenance measures of the roller
3.1 Maintenance measures of the roller during storage and transportation
When the roller is not working, it should be properly stored. Several points need to be paid attention to when storing: First, the environment for storage. When choosing the environment, try to choose a dry warehouse. Keeping dry is an important measure to prevent rust damage. In case of rain, cover it in time, and use appropriate methods to ensure that the ground is dry. Another is the fire protection of the storage area, prepare enough fire extinguishing equipment, and keep away from the fire source. In addition, during the transportation of the roller, the following points should be noted: First, the choice of transportation status. When transporting at a long distance, try to use a trailer or flatbed to assist transportation. When lifting and transporting, ensure the safety of the locking device Correct installation, to prevent the shaking of the fuselage frame, to avoid the appearance of accidental shedding. The second is the requirement of self-transportation. Often in the case of short distances, the choice of road conditions is very important.
3.2 Standard operation in accordance with the instructions
In the instruction manual, two stages are proposed for the maintenance of the roller: maintenance during the running-in period and grade maintenance. The maintenance during the running-in period refers to the time when the equipment starts to run. At this time, the equipment has a running-in period. The maintenance work during this period must be meticulous and timely. The main maintenance work is to periodically adjust the gap, clean regularly, and reasonably Change the lubricating oil and check the tightness of each component in time to ensure the connection is tight. When the running-in period has passed, it will enter the level maintenance stage. The level maintenance is divided into one, two and three levels. The first-level maintenance work is similar to the maintenance during the running-in period. It mainly updates the lubrication status of the connections between mechanical components in a timely manner to eliminate the weak links after a period of work. The second-level maintenance is mainly checked and adjusted during work. At this time, the inspection and adjustment are comprehensive. The main purpose is to ensure that the equipment will be in good condition for a long period of time. The three-level maintenance work is meticulous, and the equipment must be completely disassembled, cleaned, lubricated, replaced in time, and some maintenance work will be added to ensure that the equipment will maximize its value.
3.3 Maintenance measures of the roller
According to the author's many years of experience, the maintenance work of the roller is focused on cleaning, lubrication, anti-corrosion and rust. The cleaning of the roller is an important task to prolong its working time and eliminate hidden dangers. Long-term use of the roller will inevitably bring about various kinds of pollution, and the existence of these pollutants will greatly reduce its working life. The following points need to be paid attention to in the cleaning work: First, strictly follow the regulations to clean the oil filter, air filter, and diesel filter. In addition, clean the electrical parts. Operation according to regulations will minimize losses.
Lubrication of equipment is an important means to ensure its efficient operation. When lubricating, add an appropriate amount of lubricating oil to the engine and transmission parts. These two points are the key to ensuring efficiency.
Anti-corrosion is a necessary measure to ensure the long-term operation of the equipment. Anti-corrosion work is mainly to apply grease or paint. Non-metallic products must be protected by corresponding anti-corrosion measures.
3.4 Maintenance measures of the roller under special circumstances
In the severe environment such as sun exposure and heavy rain, various parts of the roller are easily damaged. Therefore, under special circumstances, it is necessary to take corresponding maintenance measures: first, the maintenance of the working mechanism. In the high-temperature exposure environment, the engine is extremely easy to overheat. Therefore, it is necessary to pay attention to the operation status of the equipment in time to avoid the phenomenon of smoke, and avoid the full load of the newly-operated equipment. The second is the maintenance of the fuel system. In a special environment, blockage of the fuel system is very likely to occur, so timely inspection of the fuel pipeline to ensure the necessary measures for the operation of the equipment. Also pay attention to the phenomenon of black smoke in the exhaust pipe and difficulty in starting, check the tightness of the fuel tank to avoid air leakage.
