The most popular road building and maintenance mac

2022-07-27
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China's road building and maintenance machinery has entered a comprehensive development period. China's road building and maintenance machinery has entered a comprehensive development period. Introduction to China's construction machinery information: since the planned development of China's road building and maintenance machinery in the late 1960s, the whole industry has basically formed a scale. Although there is still a certain gap compared with developed industrial countries, it has been able to produce most of the products required for road construction and maintenance projects. At present, the new models and technologies of road building and maintenance machinery are not

since the planned development of China's road building and maintenance machinery in the late 1960s, the whole industry has basically formed a scale. Although there is still a certain gap compared with developed industrial countries, it has been able to produce most of the products required for road construction and maintenance projects. At present, new models and technologies of road building and maintenance machinery are emerging, and the development, production and sales of products are very prosperous, which has entered an all-round development period

in recent years, the rapid development of China's high-grade highways, especially expressways, has promoted the development of road construction and maintenance machinery to high-level, high-performance and large-scale special models. Some road construction and maintenance machinery with excellent performance have gradually entered the International (2) attapulgite clay (at or ATP) market, marking that the technical level of China's road construction and maintenance machinery has jumped to a new level

however, it should be noted that China's road building and maintenance machinery industry has few types of machinery used for high-grade highway construction (for example, asphalt concrete or cement concrete pavement pavers for high-grade highway construction, large-scale mixture drying and mixing machines and high-performance multi-functional maintenance machinery still need to be imported in whole or in large part), and the role played by supporting plastic packaging can not be underestimated, such as poor capacity, backward manufacturing technology, low product comprehensive level The problems of backward scientific research and development means and imperfect testing and experiment means are very prominent. In view of this, according to the current situation of our country's road building and maintenance machinery, we should evaluate the product technology level of our country's road building and maintenance machinery, so as to have a more scientific and practical understanding of our own product technology level, which is of great significance for catching up with and surpassing the international advanced level and developing our country's road building and maintenance machinery according to local conditions. Generally speaking, this evaluation mainly includes the following aspects

service reliability

at present, there is no unified requirement for the service reliability of road building and maintenance machinery in China. Foreign construction machinery products are generally required to be used continuously for 1500h ~ 2000h after leaving the factory without mechanical failure. According to the requirements of most manufacturers for the reliability of machinery, the continuous service life of such machinery in China should ensure no failure within 1000h ~ 1500h

the length of fault free period is the basic index to measure the mechanical reliability. Reliability not only reflects the internal quality of the machine itself, so that the mechanical efficiency can be brought into full play, but also is an important standard to reflect and measure the technology and management level of the manufacturer. In recent years, from the perspective of the world road construction and maintenance machinery industry, there are not many new models coming out. Most manufacturers are making efforts to improve the technical level and reliability of machinery. Functions such as force value automatic shift, reset and data query according to the latest data statistics, one of the world's best construction machinery manufacturers, the products of American (caterpillar) company have adopted more advanced technologies than previous mechanical products. However, during this period, a large number of advanced technologies, such as excitation leveling and infrared detection, have further improved the progressiveness and reliability of its products. From the overall level, the fault free time of continuous operation has exceeded 2400h However, in the same period, the self weight of similar machinery has increased. Most of the increased dead weight is used to strengthen the strength and stiffness of the weak parts of the machinery. Their emphasis on mechanical reliability can be seen from this

due to the harsh working environment of the road building and maintenance machinery, its working reliability is more important than the technical progressiveness of the machinery itself. Of course, the progressiveness of technology can also be used to improve the reliability of machinery. One of the important tasks of engineers and manufacturers is to find out their internal relationship and design the best arrangement

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