Uncover the veil of construction machinery life

Unveil the veil of construction machinery life In recent years, China's large-scale infrastructure, construction machinery industry has been rapid development. However, some products have shorter working lives and are less able to meet the user's desire to create higher economic benefits. The same type of product, due to the design level, manufacturing quality, use of the environment and the use of maintenance units of different technical and management level, the life expectancy there will be a huge difference. Excellent design is the key to mechanical longevity "Design career" is the Japanese design philosophy, which makes Japanese products durable and marketing the world. According to Japan's Hitachi Construction Machinery, Caterpillar Mitsubishi, Komatsu, Kobe Steel and other manufacturers introduced the design information to extend the service life of the main design method is to promote the feasibility of design maintenance design. Japan's new Caterpillar-Mitsubishi Corporation using load analysis method, accurate analysis of stress on the force components such as bulldozers on the construction site, put forward to extend the life of the design (longevity design), namely: â‘  reduce the surface pressure Mechanical contact stress), such as spiral teeth instead of involute gear, the overlap system increases. â‘¡ decentralized load, such as the use of triangular belt instead of walking the common system of walking track, the drive wheel from the conventional touch-type move to the top of the triangle, out of contact with the ground, so that the impact of the impact load on the drive wheel, operating load significantly reduced . â‘¢ reduce the heat, such as the use of wet clutches, wet brakes, etc., in order to reduce friction heat. Design efforts to improve the maintenance of machinery is to extend the life of the pulse of powerful measures. Japanese manufacturers believe that if the mechanical repair is good, easy to maintain, can be used "fast repair at low cost," the parts can often be in good technical condition, in the event of failure, due to the low cost of quick repair, no need to replace the new Or new machine, which in fact extends the life of the machine. In addition, the use of new materials is also an effective measure to extend the life of construction machinery. In the design of new machines, according to the selection of mechanical properties and working conditions suitable for new materials, but also to extend the service life of a good way. April 2005, China Construction Machinery Pavilion at the BMW International Fair in Munich, Germany, foreign investors generally agree that China is willing to accept construction machinery products, but the reliability of Chinese products and after-sales service is a headache, buy cheap, with Do not worry. According to the statistics of China's construction machinery products in 1000-hour reliability test and three-pack period, the MTBF varies from 150 to 300 hours, while the international level is 500 to 800 hours. Overhaul life, do not use imported engines, only 4000 to 5000 hours, while the international level has reached 8000 to 10,000 hours, more than 200kW of large products to 20,000 hours. Domestic products compared with imported products, which is characterized by low prices, product stability, poor reliability, parts processing means behind. Powerful users would rather pay for more imports, because it not only has a low failure rate but also has a long service life. Although a one-time investment, but the benefits of creating high. Rational use is a prerequisite for mechanical health Construction machinery factory, usually require 60 hours or so running, which is based on the manufacturer of the technical characteristics of the initial use of construction machinery. Run-in period is to ensure the normal operation of machinery, reduce the failure rate and prolong the service life of an important part. But at present, some users lack the common sense of construction machinery or because of tight schedule, or want to get benefits as soon as possible, while ignoring the special requirements of the new machine run-in period. Leading to frequent failure of the machine early, which not only affects the normal use of the machine, shortening the life of the machine, but also because of damage to the machine, affecting the progress of the project. In addition, environmental factors also affect the life of the machine. Construction machinery is mostly open-air operations, work sites also often change, so its performance by the job site temperature, pressure, pollution, road conditions and weather and other factors. Many construction companies neglected the influence of environmental factors on the use of machinery and did not take corresponding protective or adaptive measures, resulting in reduced mechanical performance, shortened service life and even accidents. In order to prolong the service life of construction machinery, we should stick to the principle of "two guarantees and three guarantees" (set people, set machines, use of packages, maintenance of packages, maintenance of packages) and "three understandings" , Understand the principle, understand the performance), "four will" (will use, will be maintained, will check, will troubleshoot), the proper use of machinery, strict implementation of safety technology and operating procedures, and machinery and equipment implementation of the target cost management, operators Economic income is linked with mechanical usage fees (such as fuel and electricity fees, maintenance fees, maintenance fees and tool fees, etc.) and strengthens the education and training of the professional staff in the management of their professional ethics. Construction companies generally have a clear rule on the maintenance of machinery, but many construction companies to the tight schedule, heavy tasks often neglect maintenance work, that the normal operation of machinery, there is no breakdown, no need to stop for maintenance. If not in time maintenance, machinery and equipment often lead to major failure, or even an accident. This will not only increase the maintenance costs but also delay the construction period, which in fact is worth the candle. Timely maintenance is the necessary protection to extend life expectancy Maintenance work is to extend the life of an important part of the machinery, the use of reasonable maintenance methods can effectively extend the service life of construction machinery. As the construction machinery management personnel and operators, we must pay attention to ensure that in the process of transport and storage to prevent mechanical damage, deformation, corrosion; do a good job of mechanical maintenance, machinery to maintain a good state of technology; to educate the operator Correct use and operation of a variety of construction machinery to reduce and prevent human error caused by mechanical failure. To do a correct and reasonable regular and irregular maintenance, keep the machinery clean and clean, regular inspection of the mechanical state of technology and found that abnormalities in time for the loose and misaligned parts timely fastening and adjustment of some of the vulnerability Preventive replacement. According to Japan's statistics, the use of state monitoring, repair methods according to South Africa, the annual maintenance costs can be reduced by 25% to 50%, the incidence of failure to reduce 75%, and extend the service life of machinery. Japanese manufacturers to propose "low-cost rapid repair method" is also an effective way to extend the service life of machinery or parts. The implementation of this Act, in addition to maintaining the mechanical design of the design, improve the mechanical maintainability, the maintenance practice can also be achieved parts transposition, construction machinery, many parts, such as bulldozers, excavators crawler pin, diesel cylinder Sets and so on, often in operation one-way load, resulting in uneven wear and tear, if timely replacement by a balanced load parts position, so that their wear and tear, you can extend its service life. The machine? Z ?? h ??? ??? maximum load to work, to be within the best use of machinery. As a construction machinery manager, when specifying the operator, it is necessary to hand over random materials and operation manuals of the construction machinery to the operator so that they can correctly grasp the mechanical performance and operation flow, and should not deduct the relevant information at random. Second, we must try to ensure the uniform addition and subtraction of mechanical load, so that the machinery is in a more gentle load changes, specifically, is to increase and decrease the throttle more evenly, to prevent the engine, the working equipment ups and downs. Fifth, timely maintenance of machinery in the course of the inevitable there will be a variety of work. Among these faults, the impact of some faults on the mechanical equipment may be very small, some of which may be serious, and even cause a big accident of machine crash. Experience has shown that serious mechanical failures are often caused by minor malfunctions. The reason is that it ignores the timely treatment of glitches. Therefore, mechanical failure, regardless of size should be promptly excluded, so as to maintain the normal mechanical performance, reduce the possibility of causing greater failure. In a sense, the timely failure to deal with is to reduce and prevent failure is an effective measure. The so-called timely processing First, in accordance with the maintenance procedures, regular maintenance and repair of machinery, maintenance and repair of various groups must be carried out as required. The existing variety of maintenance and repair specifications is the summary of many years of practical experience, is its scientific and reasonable, in the absence of major technological progress and innovation, these rules on the construction machinery repair and maintenance guidance is absolute Sexuality must be followed. Second, during the use of the construction machinery to strengthen the regular and occasional inspection, keep abreast of the operation of machinery, the temporary emergence of the fault, to be dealt with in time, not because of small faults, does not affect the use and delay the timing of maintenance, brewing Become a bigger fault. Sixth, take the correct technical measures and organizational management measures With the development of materials science and design and manufacturing technology, many new technologies, new materials and new structures are adopted on construction machinery, which requires that the technical support and management of machinery be more scientific and complete . To this end as a construction machinery organization and management personnel and operators, one should pay attention to ensure that machinery in the transport and storage of machinery to prevent damage, deformation, corrosion and so on. Second, we must strictly implement the routine maintenance of machinery so that the machinery is in good technical condition. The third is to educate operators to properly use and operate a variety of construction machinery, reduce and prevent human error caused by mechanical failure. Fourth, we must carefully maintain the machinery, to be properly and regularly carried out regular and irregular maintenance, keep the machinery clean and clean, regular inspection of the mechanical state of technology and found that abnormalities in time for the loose and misaligned parts timely fastening and Adjustment, preventive replacement of some wearing parts and so on. More and more people are already aware of the importance of preventing construction machinery from malfunctioning. There is an old saying in China, "take precautions and take preventive measures". Only when the normal use of construction machinery is guaranteed can the projects proceed smoothly as planned, Only in this way, the use of construction machinery, will make staff feel even more powerful.

Wire Thread Insert

Wire thread inserts are helically coiled fastening devices that provide permanent, wear-resistant screw threads that exceed the strength of most parent material; the inserts are designed to protect tapped holes against failures due to stripping, seizing, corrosion, and wear.

Threaded inserts are typically used when the object in which a threaded fastener is being installed is made of a soft material. For hard materials, a screw or bolt can be often driven into the object without the need for a threaded insert. A simple solution is to use a threaded insert.

Wire Thread Insert,Wire Thread Auto Repair Inserts,Metal Wire Thread Insert,Wire Thread Repairing Insert

Shenyang Liming Mechanical Component Factory , https://www.helisert.com