NEWS

Knowledge

16

2023-01

Problems of Highway Maintenance Machinery

Problems of Highway Maintenance Machinery After years of large-scale construction, China's highway network has been basically formed, is about to enter a high tide of highway maintenance and repair. At the same time, the increasingly heavy traffic pressure puts forward higher requirements for the efficiency and quality of highway maintenance. These favorable factors will promote the development of highway maintenance machinery, and the concept of long-term "reconstruction and light maintenance" has led to the backward level of highway maintenance mechanization in China, so the future development space is huge and the market prospect is broad. Although the road maintenance machinery industry has made great progress, but the existing problems are also prominent, especially in the era of road maintenance, and the contradiction between the market demand is increasing. Specifically, the road maintenance machinery industry mainly has the following three major problems. 1, the industry foundation is weak, insufficient research and development. China's highway construction started late, the research on highway maintenance technology is not enough attention, most of the existing maintenance technology is introduced from abroad in recent years, therefore, the industry as a whole the original innovation ability is insufficient, advanced maintenance equipment is still mostly supplied by foreign manufacturers. 2. The industry has a high technical threshold, a long product promotion cycle, and the products also have the characteristics of multi-variety, small batch and customized production. Therefore, some large domestic construction machinery companies with research and development capabilities are currently unwilling to intervene. This also leads to the domestic enterprises engaged in the industry is generally small, research and development capacity and investment is insufficient, compared with similar foreign enterprises in product reliability and advanced there is still a gap, some of the technology and products in the country is still in the blank. 3, the industry standard system is not perfect. The standard system in the industry is not yet sound and perfect, and the basic standards that have a guiding role for the entire industry are still relatively scarce, which is not conducive to the rapid and healthy development of the industry.

2023-01-16

16

2023-01

What is a towed impact roller? What is a towed vibratory roller?

Trilateral Tractor-Mounted Impact Roller Both tractor-mounted impact rollers and tractor-mounted vibratory rollers fall under the category of tractor-type compactors. Simply put, neither type has built-in locomotion capabilities and must be operated by being towed behind a towing vehicle—making them essential pieces of engineering compaction machinery. --- Quadrilateral Tractor-Mounted Impact Roller Compactor Among these, the impact roller compactor features non-circular polygonal structures for its impact wheels. Depending on the specific shape, it is classified into three types: the trilateral impact roller compactor, the quadrilateral single-wheel impact roller compactor, and the pentagonal double-wheel impact roller compactor. --- Self-Propelled Pentagonal Impact Roller Compactor The operating principles of tractor-mounted impact roller compactors and self-propelled impact roller compactors are identical. The trilateral impact wheel delivers a stronger impact force, making it particularly suited for deep compaction of roadbeds. In contrast, the quadrilateral impact roller offers a more balanced force, allowing it to handle both roadbed compaction and pavement breaking tasks effectively. Notably, the quadrilateral impact compactor features a single-wheel design, enabling efficient operation even in relatively narrow road conditions. Meanwhile, the pentagonal impact roller produces a slightly weaker impact force compared to the trilateral model, primarily used for pavement breaking as well as compacting powdery and sandy soils. --- Self-Propelled Vibratory Roller Compactor Tractor-mounted vibratory rollers and self-propelled vibratory rollers share the same working principle: they rely on their own weight and vibration force to induce rapid, vertical oscillations within the material being compacted, significantly reducing internal friction between soil particles and achieving thorough compaction. Importantly, the magnitude of the vibration force can be adjusted according to specific project requirements. --- Tractor-Mounted Vibratory Roller Compactor All tractor-mounted vibratory rollers feature a single steel-wheeled design. Based on varying weights and power outputs, they are categorized into light-duty and heavy-duty models. Generally speaking, equipment weighing less than 10 tons is classified as a "light-duty" tractor-mounted vibratory roller, a type commonly employed overseas due to differing construction standards. --- Light-Duty Tractor-Mounted Vibratory Roller Compactor Equipment weighing over 14 tons is designated as a "heavy-duty" tractor-mounted vibratory roller, a model widely used domestically. These heavy-duty machines are indispensable tools in foundational construction projects such as highways, railways, dams, and airports. Particularly when dealing with large-scale embankment projects requiring a compaction degree exceeding 95%, the efficiency and necessity of this machinery become especially evident. --- Heavy-Duty Tractor-Mounted Vibratory Roller Compactor While light-duty and heavy-duty tractor-mounted vibratory rollers serve different application scopes, the choice between them depends on factors like compaction depth and material type, allowing operators to select rollers with appropriate weight or vibration force. Additionally, because the light-duty model has a relatively lighter wheel weight, it typically draws power from the towing vehicle's engine. In contrast, the heavy-duty version often comes equipped with its own high-powered engine, ensuring robust performance during operation. For more information about industrial vacuum cleaners, please continue following Guangzhou Qingqinyu Environmental Technology Co., Ltd. at www.qingqinyu.com

2023-01-16

13

2023-01

Milling machine set off new power for road reconstruction

In late September, the management section of Gejiu Highway introduced asphalt pavement milling machine for the first time for pavement treatment. In a short period of two days, more than 10,000 square meters of pits and subsidence were treated, which not only greatly accelerated the progress of road repair, but also significantly reduced the impact on passing vehicles. "The asphalt pavement milling machine is too good. It was supposed to work for more than a month and it was finished in two days. The work efficiency is really high." A road worker said. Before the road repair need to use artificial or mechanical road after the eradication of broken, not only the construction speed is slow, but also produce noise and dust, after the use of milling machine greatly shorten the road surface repair time, compared with the previous traditional construction methods, not only greatly improve the speed, repair quality is also very high. The labor intensity, operation safety and working environment of the staff have been greatly improved. The asphalt pavement milling machine can lift 20 to 30 meters of damaged road surface in one minute, and can clean 500 square meters of road surface per hour, while the manual digging and mending pits is only 6 square meters per day. Not only that. It strips off the damaged road surface evenly, does not hurt the roadbed, and is easy to resurface. After milling, a neat and flat milling surface and a straight milling boundary are formed to create conditions for re-paving of asphalt mixtures. After repair, the new and old paving layers are well connected and the joints are flush. The cut asphalt mixture can be directly used for the pavement surface layer, mixed with new asphalt heating, and then re-paved with high-quality surface layer, to avoid the waste of resources.

2023-01-13

12

2023-01

Problems of Highway Maintenance Machinery

Problems of Highway Maintenance Machinery After years of large-scale construction, China's highway network has been basically formed, is about to enter a high tide of highway maintenance and repair. At the same time, the increasingly heavy traffic pressure puts forward higher requirements for the efficiency and quality of highway maintenance. These favorable factors will promote the development of highway maintenance machinery, and the concept of long-term "reconstruction and light maintenance" has led to the backward level of highway maintenance mechanization in China, so the future development space is huge and the market prospect is broad. Although the road maintenance machinery industry has made great progress, but the existing problems are also prominent, especially in the era of road maintenance, and the contradiction between the market demand is increasing. Specifically, the road maintenance machinery industry mainly has the following three major problems. 1, the industry foundation is weak, insufficient research and development. China's highway construction started late, the research on highway maintenance technology is not enough attention, most of the existing maintenance technology is introduced from abroad in recent years, therefore, the industry as a whole the original innovation ability is insufficient, advanced maintenance equipment is still mostly supplied by foreign manufacturers. 2. The industry has a high technical threshold, a long product promotion cycle, and the products also have the characteristics of multi-variety, small batch and customized production. Therefore, some large domestic construction machinery companies with research and development capabilities are currently unwilling to intervene. This also leads to the domestic enterprises engaged in the industry is generally small, research and development capacity and investment is insufficient, compared with similar foreign enterprises in product reliability and advanced there is still a gap, some of the technology and products in the country is still in the blank. 3, the industry standard system is not perfect. The standard system in the industry is not yet sound and perfect, and the basic standards that have a guiding role for the entire industry are still relatively scarce, which is not conducive to the rapid and healthy development of the industry.

2023-01-12

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