Asphalt concrete mixing equipment is a kind of mechanical equipment for producing various asphalt mixtures and is applicable to highways, urban roads, airports, docks, parking lots and other engineering departments. It is one of the key equipments for asphalt concrete pavement construction. Its performance directly affects the quality of the paved asphalt pavement. The Ministry of Transportation and the Ministry of Construction have made clear provisions on the technical conditions of the asphalt concrete mixing equipment.
The rapid development of China's highway industry has promoted the supply and demand of asphalt concrete mixing equipment. Suppliers of various brands of asphalt concrete mixer equipment in foreign countries have spotted the Chinese market rushing in, and domestic manufacturers of asphalt concrete mixing equipment have risen like bamboo shoots. According to incomplete statistics, there are more than 30 companies that produce various asphalt concrete mixing equipment in only one area of ​​Wuxi. This reflects the strong momentum of the road industry's demand for road-building machinery in China's highway industry in one aspect. It also reflects the urgency of the urgent need for reorganization due to competition among the asphalt concrete mixing equipment market. In the past, the general technical conditions of the asphalt concrete mixing equipment issued by the competent government departments of China have played a positive role, but with the development of society, many unsuitable places need to be modified and supplemented as necessary. The confusion in the production and supply of concrete mixing equipment is reflected in the following aspects:
The first is to compete for prices. At present, China's asphalt concrete mixing equipment market has a turbulent circle. Some manufacturers and suppliers compete for prices and win prices in order to gain market share, instead of improving the internal management level and improving product performance and quality. Kung Fu, to improve the attitude of after-sales service, to win the trust of users. As a result, prices have dropped and credibility has decreased.
The second is to make a mess. Some manufacturers and suppliers have achieved market share after reducing the selling price, and in order to obtain a certain profit, they have made a big fuss about the processing of equipment. The purpose of rigorous production is to reduce production costs. As a result, the quality of equipment is difficult. It is guaranteed that the failure rate has surged and the cost of user use has increased significantly. In the case of painting the surface of steel structures as an example, they should be painted first after derusting, but some companies do not only remove rust, but do not even coat primers.
Third, shoddy. Some manufacturers and suppliers, in order to reduce selling prices, do not configure parts and components according to design requirements. Instead, they use subcontracting methods to replace inferior parts with quality and performance that meet the requirements for quality and performance. Parts instead of imported parts, the results affect the overall performance and quality, equipment can not be put into use after installation. Drying drums in asphalt concrete mixing equipment should be welded and rolled with heat-resistant boiler steel plates. However, some production plants use ordinary structural steel plates rather than their thicknesses.
Users and formal manufacturers urgently requested the relevant government departments to strengthen management, and widely solicit opinions on the basis of the general technical conditions of the original asphalt concrete mixing equipment, and make amendments and supplements according to the current problems to further regulate the performance of the asphalt concrete mixing equipment. Quality and production conditions.
The National Road Maintenance Machinery Association made a detailed and truthful report to the competent department of the Ministry of Communications after hearing extensive opinions from all sides. The Science and Technology Education Department of the Ministry of Communications established the project immediately and formulated the Technical Specifications for Asphalt Concrete Mixing Equipment, and entrusted the National Road Maintenance Machinery Association. Organize relevant units and experts to draft the "norms" and request that it be completed before August 2002. The contents of the “Specifications†are revised and supplemented on the basis of the general technical conditions of the original asphalt concrete mixing equipment. The contents include:
Overall equipment performance: such as production capacity, handling methods, and process flow.
The main structure of the equipment: cold aggregate feed system, cold aggregate drying heating system, hot aggregate lifting system, aggregate screening and storage metering system, powder supply and metering system, asphalt supply and metering system.
The main parameters of the equipment: such as the main parameters of the drying drum, the main parameters of the stirrer, and the thermal parameters.
The design parameters of the main components of the equipment: such as the power, strength, and life of the drying drum, the basic requirements for the design of the blades and the agitator inside the drying drum.
The basic conditions of the production plant: such as the factory's basic equipment, technical personnel quality and equipment, testing and testing conditions.
The production plants and products must have special agencies to supervise them, and if necessary, implement a production license system with a graded management.
The formulation of the industry "code" is a careful, complicated, involving a wide range of high-tech work, but also a certain authoritative work. The Association will include the drafting of the "Code" in the priorities of its future work and complete the tasks on schedule. (Mechatronics)
The rapid development of China's highway industry has promoted the supply and demand of asphalt concrete mixing equipment. Suppliers of various brands of asphalt concrete mixer equipment in foreign countries have spotted the Chinese market rushing in, and domestic manufacturers of asphalt concrete mixing equipment have risen like bamboo shoots. According to incomplete statistics, there are more than 30 companies that produce various asphalt concrete mixing equipment in only one area of ​​Wuxi. This reflects the strong momentum of the road industry's demand for road-building machinery in China's highway industry in one aspect. It also reflects the urgency of the urgent need for reorganization due to competition among the asphalt concrete mixing equipment market. In the past, the general technical conditions of the asphalt concrete mixing equipment issued by the competent government departments of China have played a positive role, but with the development of society, many unsuitable places need to be modified and supplemented as necessary. The confusion in the production and supply of concrete mixing equipment is reflected in the following aspects:
The first is to compete for prices. At present, China's asphalt concrete mixing equipment market has a turbulent circle. Some manufacturers and suppliers compete for prices and win prices in order to gain market share, instead of improving the internal management level and improving product performance and quality. Kung Fu, to improve the attitude of after-sales service, to win the trust of users. As a result, prices have dropped and credibility has decreased.
The second is to make a mess. Some manufacturers and suppliers have achieved market share after reducing the selling price, and in order to obtain a certain profit, they have made a big fuss about the processing of equipment. The purpose of rigorous production is to reduce production costs. As a result, the quality of equipment is difficult. It is guaranteed that the failure rate has surged and the cost of user use has increased significantly. In the case of painting the surface of steel structures as an example, they should be painted first after derusting, but some companies do not only remove rust, but do not even coat primers.
Third, shoddy. Some manufacturers and suppliers, in order to reduce selling prices, do not configure parts and components according to design requirements. Instead, they use subcontracting methods to replace inferior parts with quality and performance that meet the requirements for quality and performance. Parts instead of imported parts, the results affect the overall performance and quality, equipment can not be put into use after installation. Drying drums in asphalt concrete mixing equipment should be welded and rolled with heat-resistant boiler steel plates. However, some production plants use ordinary structural steel plates rather than their thicknesses.
Users and formal manufacturers urgently requested the relevant government departments to strengthen management, and widely solicit opinions on the basis of the general technical conditions of the original asphalt concrete mixing equipment, and make amendments and supplements according to the current problems to further regulate the performance of the asphalt concrete mixing equipment. Quality and production conditions.
The National Road Maintenance Machinery Association made a detailed and truthful report to the competent department of the Ministry of Communications after hearing extensive opinions from all sides. The Science and Technology Education Department of the Ministry of Communications established the project immediately and formulated the Technical Specifications for Asphalt Concrete Mixing Equipment, and entrusted the National Road Maintenance Machinery Association. Organize relevant units and experts to draft the "norms" and request that it be completed before August 2002. The contents of the “Specifications†are revised and supplemented on the basis of the general technical conditions of the original asphalt concrete mixing equipment. The contents include:
Overall equipment performance: such as production capacity, handling methods, and process flow.
The main structure of the equipment: cold aggregate feed system, cold aggregate drying heating system, hot aggregate lifting system, aggregate screening and storage metering system, powder supply and metering system, asphalt supply and metering system.
The main parameters of the equipment: such as the main parameters of the drying drum, the main parameters of the stirrer, and the thermal parameters.
The design parameters of the main components of the equipment: such as the power, strength, and life of the drying drum, the basic requirements for the design of the blades and the agitator inside the drying drum.
The basic conditions of the production plant: such as the factory's basic equipment, technical personnel quality and equipment, testing and testing conditions.
The production plants and products must have special agencies to supervise them, and if necessary, implement a production license system with a graded management.
The formulation of the industry "code" is a careful, complicated, involving a wide range of high-tech work, but also a certain authoritative work. The Association will include the drafting of the "Code" in the priorities of its future work and complete the tasks on schedule. (Mechatronics)
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