Common faults of excavators
Actively adopt international advanced welding technology and equipment
The development of China's maintenance science and technology to a higher level will have a profound impact on accelerating the process of maintenance modernization. According to relevant data, the most important reason for scrapping internal combustion engines is severe friction, in which the amount of friction damage during start-up accounts for 424% to 50.3% of the total scrap. When the internal combustion engine is parked for more than 5 hours, the lubricating oil between the cylinder wall, the piston connecting rod group, the gas distribution mechanism and other components have flowed into the oil pan under the effect of gravity, and the lubricating oil film has disappeared. Tongda Excavator Manufacturer Tongda Excavator Manufacturer is a R & D and design enterprise specializing in small-sized excavators for more than 20 years. Since its establishment in 1997, it has been committed to the design, development, research, development and production of high-efficiency agricultural machinery and construction machinery. The main product sold online is Tongda BD95W-9A multifunctional wheeled excavator equipment. Tongda Excavator Maintenance Co., Ltd. was established in 2000 and was co-founded by the Western Import Excavator Maintenance Alliance.
For the western region. Large excavator maintenance technical service agency. Tongda Excavator Maintenance Co., Ltd. relies on domestic leading inspection, debugging, maintenance equipment and experienced maintenance technicians. It is called "the most professional excavator repair and after-sales center in the west". Fuel oil should not be completely burned to produce carbon deposits, which will also increase friction and damage to the parts. Everyone knows that the use of advanced technology and supporting equipment can greatly increase product quality and increase the level of R & D and production power. Also, the use of advanced and efficient processes can reduce product costs. Welding-dominant distributors such as boilers, bridges, heavy and construction machinery industries all over the world and domestic have been actively adopting international advanced welding processes and equipment. The use of some advanced processes and equipment has increased the quality of welding, compared with the cost of welding, and improved the working conditions of workers. At present, due to the fierce market, the manufacturing rate is rising. Current status of welding technology in the construction machinery industry Excavator repair, excavator repair, repair excavator, repair excavator
The use of automatic semi-automatic CO2 gas shielded welding technology accounts for a large part of the weight. The welding work completed by the arc welding instrument has just reached more than half. In addition, it is manual arc welding, which is generally reflected by everyone. The current level of technology is not suitable for arc welding. The requirements of welding equipment personnel. Although the construction machinery industry has a high level of equipment personnel and a large number, the quality of parts before welding is low. Arc welding equipment cannot meet the requirements of research and development and production. The maintenance phone of Neijiang Komatsu excavator has been extended from the use phase to the full life cycle of machinery and equipment. It has evolved from single operation management to system engineering management, from the development of realistic maintenance support research to the advance maintenance support research, from the decentralized, qualitative, and experience stage Enter a systematic, quantitative, and scientific stage. The corresponding Shantui bulldozer maintenance technology has also evolved from a relatively simple maintenance technique into a comprehensive engineering technology with a rich content. The future development of mountain bulldozer maintenance technology will mainly present the following highlights and trends.
Xuzhou Komatsu excavator after-sales service call does not exceed 15s per rotation, and the time interval between each rotation is not less than 2min, and the accumulation does not exceed a few times. After starting, an idle speed of 3 to 5 minutes should be implemented. After the internal combustion engine is started, it cannot be run at high speed immediately. It is necessary to wait for the lubricating oil to reach the standard pressure and the temperature of the body to rise to 50-60 ° C before carrying out the work. Because the resistance between the moving pairs increases when the temperatures of the internal combustion engine and the lubricant are too low, it is difficult for the lubricant to flow and form an oil film. When the lubricating oil of the same brand drops from 50 ° C to 0 ° C, its kinematic viscosity will drop to a few tenths of the original. But do not run for a long time at idle. It can only start the internal combustion engine quickly, and it cannot solve the problem of severe friction and brushing when the internal combustion engine is started in cold conditions. In this regard, when the internal combustion engine is started at a temperature of -3 ° C or below, it is best to use a cold climate starting auxiliary device in combination with external conditions for preheating. For example, add hot water above 50 ℃ directly into the cooling system.
Or use hot gas or steam to heat the oil pan, cylinder block, injector, etc. Similarly, our department has specially developed a preheater for starting under severe cold conditions, and uses diesel to emit hot air above 300 ° C to quickly increase the temperature of the body, reduce the viscosity of the lubricating oil, and reduce the starting resistance. This method is simple and convenient. Tongda Excavator Maintenance Co., Ltd. was established in 2000 and was co-founded by the Western Imported Excavator Maintenance Alliance. Large excavator maintenance technical service agency. The company has always served the majority of excavator owners with the basic concept of "sincerity as the foundation and faith first". Tongda Excavator Maintenance Co., Ltd. relies on domestic leading inspection, debugging, maintenance equipment and experienced maintenance technicians. It is called "the most professional excavator repair and after-sales center in the west". In addition, many traditional Shantui bulldozer maintenance technology research fields have also broken through the traditional traditional technical boundaries through more in-depth development and innovation. For example, the fault diagnosis system has gradually changed into a complex complex.
This includes pattern recognition technology, image thinking technology, visualization technology, modeling technology, parallel reasoning technology and data compression technology. The integration of that part of the technology effectively improves the reasoning, concurrent processing, information synthesis, and knowledge integration capabilities of the fault diagnosis system, and promotes the development of fault diagnosis technology towards information, network, intelligence, and integration. To the entire system of machinery and equipment. The understanding of maintenance has broken through the traditional definition. Its concept and connotation have been expanded for a long time: the maintenance ideas and strategies of machinery and equipment have been developed: from "post-service maintenance BM" to "preventive maintenance PM", "predictive maintenance PDM" and even "improvement" "Maintenance CM" and "Risk Maintenance" and other theories of "Concurrent Engineering" and deepened the theory of "Reliability-centric Maintenance". Based on the development of information, network and other technologies, developed countries have also proposed suitable for satisfying decentralized and New theories of maintenance support such as "precise support" and "agile support" that are increasingly mobile.
With the maintenance of machinery and equipment, the development and reconstruction of Xuzhou Komatsu excavator service telephones are more closely linked, which will further promote the combination of machinery and equipment maintenance and development technology. Since the 1980s, after many years of development, the first was during the "10th Five-Year Plan" period. China ’s machinery and equipment mountain bulldozer maintenance technology has made great progress, and a number of achievements have been made in repair processes and fault diagnosis. Bulldozer maintenance technology has been laying a technical foundation for rapid, healthy development. Komatsu excavator maintenance service customer service station. Common faults of telephone excavator maintenance: weak excavator, slow and weak excavator heat engine, slow excavator bucket motion, no excavator car movement, excavator engine oil burning, excavator walking deviation, excavator falling arm, excavation The unilateral deviation of the machine, the slow movement of the excavator, the weakness of the entire vehicle of the excavator, the slow speed of the excavator bucket, the abnormal noise of the excavator boom, the no movement of the entire excavator vehicle, the slow and weak lifting of the excavator boom, Komatsu excavator repair and repair, such as slow single excavator movement, speed drop of the excavator, and weakness of the excavator boom.
Various problems such as slow failures, off-tracking, sloping cars, high excavator oil temperature, excavator jamming, excavator arm drop, black smoke from engines, etc. Kaili Komatsu excavator after-sales service call will have direct friction between the sports pairs for a period of time to deepen friction damage, first in cold winter, due to the large viscosity of the lubricant, slow oil film formation, friction damage will be more serious Only when the internal combustion engine is started for a short time, the unused oil film is formed, and then this direct friction will slowly disappear. In addition, the fuel viscosity in winter is reduced. Within a few seconds after the internal combustion engine is started, the fuel injection pump assembly is easy. If the atomization is poor, the fuel will scrub the cylinder wall, further destroying the lubricant film, causing a "dry grinding" phenomenon between the piston ring and the cylinder wall. This will greatly accelerate the scraping of the cylinder wall and the piston ring and shorten the use of the internal combustion engine. life. Experimental proof. Virtual maintenance, remote maintenance, interactive electronic technical manuals and other technologies have allowed traditional monitoring and diagnostic technology to advance.
The creation of new machines and systems based on virtual machine monitoring and diagnosis has promoted the intelligent development of maintenance decision support systems, improved the ability to retrieve information from a variety of completely different systems and databases, and hastened Integration of maintenance information systems and maintenance support systems. The development trend of multidisciplinary comprehensive crossover is obvious. Shantui bulldozer maintenance technology is a typical comprehensive engineering technology, and its development and innovation increasingly depend on multidisciplinary integration, penetration and crossover. All the resources visualization has been derived, not only the emerging Shantui bulldozer maintenance technology research fields have exceeded the traditional disciplines, sub-categories, full life cycle development, adapting to the full life cycle development of mechanical equipment, the maintenance technology and supportability of software products Research on comprehensive properties of equipment. Also. Guided by modern maintenance theory, supported by information technology, mountain bulldozer maintenance technology and material technology, to maintain and restore good technical conditions of mechanical equipment.