At present, China's mining industry is continuously developing and expanding, and the level of mechanization has also been further improved. How to correctly and effectively respond to the daily maintenance and maintenance of machinery is an important issue faced by major customers. Machinery and equipment are the main production and management tools of mining enterprises, and the correct operation And maintenance, not only can effectively improve the service life of equipment, but also can effectively improve the performance of machinery and equipment, effectively increase production efficiency, thereby promoting the realization of the economic benefits of mining enterprises.
First, the characteristics of mining machinery and equipment failure
1. Potentiality
Various damages may occur during use of the machine. The damage will cause the structural parameters of the parts to change. When the damage develops beyond the permissible values of the parts, the machine will experience a potential failure. Because the machine design has a certain degree of margin safety factor, Even if the structural parameters of certain components exceed the allowable values, the functional output parameters of the machine are still within the allowable range. It usually takes a long period of time from the development of a potential fault to a functional fault. During this time, the lubricant is used to clean it. , Tightening, adjustment and other means can eliminate or slow down the development of the damage, so that the potential failure can be controlled to a certain extent or even eliminated. The potential of mechanical failure can be reduced through the maintenance to the occurrence of functional failure, thus greatly extending the use of machinery life.
2. Fade
Over time, wear and tear, corrosion, fatigue, aging and other use costs are apparent, so the occurrence of mechanical failure is mostly related to the use of time. In use, mechanical damage is gradually produced, and the structural parameters of parts are also slow. Most of the faults can be tested and monitored in advance by the instrument. The probability of a fault is related to the time the machine is running. The longer the machine is used, the greater the probability of a fault. The gradual nature of the fault makes the mechanical majority Faults can be prevented, fault diagnoses, and condition-based maintenance is built on this basis.
3. Depletion
With the gradual increase in the degree of mechanical aging, wear, corrosion, fatigue, aging and other failures are increasing. With the increase in the use of time, the elimination of partial failures can restore mechanical performance, but the mechanical failure rate is still rising, new The failure will continue to occur. The repair rate of wear is also incomplete, and maintenance cannot restore the performance of the machine to its pre-use state.
4. Uncertainty
In the use of machinery, affected by the method of use and the surrounding environment, its damage and output parameter changes have a certain degree of randomness and dispersion; due to factors such as materials and manufacturing processes, various practical limit values of the machine, initial values are also Not the same. The same machine, in different use environments, the output parameters also show different effects over time, resulting in a certain uncertainty in the parameter change and failure criteria. Mechanical uncertainty uncertainty to machinery The diagnosis and discrimination of faults add a certain degree of difficulty. It also requires that the study of mechanical faults must be combined with macro and micro perspectives.
5. Diversity
In mechanical use, there are many kinds of failure mechanisms in the same component, such as bending deformation, wear, fatigue fracture, etc. These failures not only manifest in different forms, but also have different levels of influence on the machine, making the fault show diversity. The variety of faults requires that the fault be studied separately according to different mechanisms and modes.
Second, the reasons for the failure of mining machinery and equipment and response measures?
1. Reasons for the management system
In order to strengthen the maintenance and maintenance of mining machinery and equipment, it is necessary to strengthen the management system. The mine operation itself belongs to high-risk industries. Once the mining machinery and equipment fail due to the lack of an effective management system, the construction of mining machinery and equipment will be implemented. The loss of personal and property is caused. In China, there is relatively little related professional management of mining machinery and equipment, which makes the management and maintenance of mining machinery and equipment and maintenance work more severely lagging. It always solves the problem after the problem occurs. Instead of finding problems before problems occur, it is the lack of scientificity and rationality in the management system. Therefore, the establishment of a scientific and rational mining machinery and equipment management system is a guarantee for the safety of mine operations.
2. Reasons for professional technology and facilities management
In the actual work, mining machinery and equipment needs to contact many ore structures with sophisticated ore resources. In order to improve the efficiency and quality of mining operations, it is necessary to select the mining machinery and equipment matching the ore resources for mining and selection. Therefore, the The management must continue to strengthen the quality and professional level of the mining machinery and equipment operators so that when testing the mining machinery and equipment, the problems should be discovered and resolved in a timely manner based on their own experience, skills and actual conditions. In daily work , To emphasize the maintenance and overhaul work of the machine, this will not only improve the working efficiency of the machine, but also effectively avoid the property loss caused by the sudden failure of the machine. In addition, the professional and technical personnel of the operator is also reflected in
3. Reasons for maintenance personnel
In China, the staff working on the maintenance and repair of mining machinery and equipment, their own quality and professional level are generally not high. Many workers just rely on their own experience to repair and maintain the equipment, and have not experienced professional training, so that equipment maintenance and maintenance The quality is difficult to guarantee. Especially in the process of repairing and maintenance of new equipment, it is more obvious. The comprehensive analysis shows that the professional quality of mining machinery and equipment maintenance personnel is low, which is mainly caused by the dual factors of market and management reasons. Market reasons are due to the daily workload of staff engaged in the overhaul of mining machinery and equipment, low wages, and difficulties in attracting talents with a high level of professional qualifications. Enterprises should strengthen professional skills training for existing staff. Only in favor of the long-term development of the company.
III. Effective measures to strengthen maintenance and repair of mining machinery and equipment
The maintenance of mining machinery and equipment can effectively increase the service life of machinery and equipment and ensure the safe production of mining enterprises. Therefore, the relevant staff of the enterprise management department should fully recognize the importance of maintenance work and must consider the issue from a long-term perspective. , can not be limited to immediate interests. To enhance the awareness of maintenance of machinery and equipment, ensure that mining machinery and equipment always maintain efficient operation. However, in actual work, many mining enterprise managers of relevant departments in order to improve the efficiency of mining, It may take a long time for the use of machinery and equipment, but it is rarely repaired and maintained. This not only causes great economic losses, but also affects the progress of production. Therefore, enterprises should actively carry out education while strengthening the management of mechanical equipment. Publicity activities: Strengthen the awareness of staff maintenance and repair, strengthen training and education activities, increase the technical level and sense of responsibility of the staff, establish a mining machinery and equipment maintenance system, and incorporate it into the company's future development plan.
In summary, the failure of mining machinery and equipment is not sudden, but it is caused by wear, corrosion and aging during the long-term use. In order to ensure the safety of mining operations, mining enterprises must strengthen the failure of mining machinery and equipment. The countermeasures to improve the maintenance and awareness of relevant personnel. Red Star Group has been focusing on mining machinery and equipment for 40 years. There is a professional team, wearable machinery, and high quality service.
If you choose Redstar Machinery, you no longer have to worry about the lack of professional operator, maintenance is not enough, maintenance is not done well. Red Star Machine has a dedicated R&D team to design an optimized production line for you; Professional operators 'hands' teaches the machine performance and Operational process, until the church; Quality after-sales service team, as long as your machine fails, 24 hours for your caring service.
Choosing a red star means choosing a major; choosing a red star means choosing confidence; choosing a red star means choosing trust. The red star will help you solve problems all the way, and escort you.
