In modern road construction and pavement maintenance projects, most of the construction projects are scattered, short construction period, remote sites and other characteristics, the traditional large-scale fixed asphalt mixing plant transfer difficult, high investment, small project capacity is a serious waste of capacity, has been unable to adapt to the lightweight, flexible construction needs.
As a new generation of continuous asphalt production equipment, mobile drum asphalt mixing plant perfectly solves the construction pain points of traditional equipment. The equipment adopts trailer-type integrated design, aggregate drying, heating, mixing function in one, can be quickly into the field transfer, continuous automated production, without the need for complex infrastructure, can be in the small, remote site stable output of high-quality hot-mix asphalt mixture, widely used in rural road repair, urban pavement maintenance, small municipal projects and emergency road repair scenarios, small and medium-sized road projects to reduce the cost of the core equipment to increase efficiency.
This article will explain the full range of mobile drum asphalt mixing plant equipment structure, core strengths, equipment differences, selection techniques, operation and maintenance methods and fault solutions to help construction companies to accurately select the type of scientific use of machines, maximize the construction benefits.
Mobile drum asphalt mixing plant is a trailer-type continuous flow automatic asphalt production equipment, designed for field, flexible road construction. Different from the traditional batch start-stop operation mode of intermittent mixing plant, this equipment adopts the continuous operation design of drying and mixing integration, which can complete the whole process of aggregate conveying, drying and heating, asphalt mixing, and finished product discharging in one go, with no breaks and no waiting.
The equipment adopts highly integrated modular structure, abandoning the traditional equipment and complex infrastructure construction and complex supporting equipment, and can be commissioned on the ground, supporting cross-site rapid transfer and relocation. The whole machine covers an area of small, adaptable, not subject to site conditions, can produce a stable output of uniform proportion, the temperature of the hot mix asphalt mixture, perfectly suited to rural road maintenance, urban local pavement renovation, remote temporary road works, emergency road repair and other types of small and medium-sized construction scenarios.
The mobile drum asphalt mixing plant adopts highly integrated modular design, compact structure, full-featured machine, and the whole set of standardized asphalt production system is integrated and mounted on the trailer chassis. The precise linkage and synergistic operation of each functional module can realize fully automatic, high-precision, green and environmentally friendly closed-loop asphalt production, which can effectively guarantee the accurate proportioning of the mixture, stable production and construction compliance. The whole set of core modules of the equipment has perfect functions, and the detailed configurations are as follows:
Frequency conversion cold material batching system: the equipment comes standard with 2 to 4 groups of independent sealed silo, can be categorized to store different specifications, different particle size of the sand and gravel aggregate, from the source to avoid material mixing, stringing and other problems. With intelligent frequency conversion speed control feeding mechanism, according to the construction ratio parameters can be accurately adjusted discharge speed and material flow, aggregate batching high precision, uniform and stable material, for high-quality asphalt mixture production to lay a precise proportioning basis.
Full-automatic belt conveying system: Equipped with high-strength wear-resistant belt conveying structure, the equipment runs smoothly and is not prone to faults such as jamming, accumulating materials and running off. It can continuously transport the cold aggregate with uniform speed to the mixing drum of the main machine without interruption, effectively guaranteeing the continuous and stable production of the equipment for a long time and greatly improving the construction efficiency.
Drying and mixing integrated drum: as the core working part of the equipment, the integrated drum integrates multiple functions of drying, heating and mixing, and is internally equipped with special material lifting blades and wear-resistant mixing blades. During the operation of the equipment, it can synchronously complete multiple processes such as dehydration and drying of aggregate, warming and heating, and homogenization and mixing of asphalt and mineral powder, etc. The equipment is highly integrated, with a simple structure, fewer faults, and stable and durable operation.
Multi-fuel combustion heating system: compatible with diesel, natural gas and other mainstream fuels, adapted to different site fuel supply scenarios, strong versatility. The system has high thermal conversion efficiency, low energy loss, and can continuously output stable heat source, accurately control the construction mixing temperature, all-round protection of aggregate drying, heating effect, to avoid the material temperature does not meet the standards affecting the quality of pavement construction.
Accurate measurement system of asphalt and mineral powder: the whole system includes asphalt heat preservation storage tank, special conveying pump, high-precision measuring device and automatic mineral powder adding equipment, which can realize automatic quantitative conveying and accurate proportioning of asphalt and mineral powder. Strictly control the dosage of all kinds of materials, effectively improve the density and bonding properties of asphalt mixture, significantly enhance the smoothness and durability of the molded pavement.
Environmental protection dust removal system: the equipment is equipped with Venturi wet dust removal equipment as standard, and can be upgraded according to the regional environmental protection requirements of the high-fitting bag dust removal device. It can efficiently adsorb and filter the dust and waste gas generated during the construction process, effectively inhibit the proliferation of dust, reduce construction pollution, and fully comply with the acceptance standards of environmental protection at construction sites around the world, realizing green construction.
Finished product discharging and storage system: adopting the combination design of inclined high-efficiency discharging conveyor and small heat preservation and buffer storage silo, the finished product mix is discharged quickly and smoothly, without accumulation and residue. It can realize temporary heat preservation and storage of finished hot materials, effectively connecting the mixing production and paving process, avoiding construction breaks and guaranteeing the continuity and stability of the overall construction.
PLC Intelligent Control System: Equipped with fully automatic PLC intelligent control panel, the man-machine interaction interface is simple and intuitive, and the operation threshold is low. Support for real-time monitoring of production parameters, mixing temperature precision fine-tuning, equipment overload protection, fault intelligent warning and other functions, without the need for professional and technical personnel on duty for a long time, greatly simplifying the operation process, reduce labor and operation and maintenance costs.
Compared with traditional asphalt mixing equipment, mobile drum mixing plant with flexible and portable, low-cost, low-fault, high-efficiency core features, accurately adapted to small and medium-sized volume of road projects, to solve a number of construction pain points in the industry.
High cost performance, suitable for small and medium budget projects
The procurement cost of the whole equipment is much lower than that of large fixed mixing plant and batch mixing equipment, while the equipment structure is streamlined, with fewer wearing parts, which greatly reduces the operation cost of daily maintenance, fault repair, fuel energy consumption and other later operation costs. For small batch, multi-site, high-frequency small and medium-sized construction projects, a single ton of asphalt mixture production cost advantage is significant, and can effectively help construction companies to tightly control the project budget, compression of construction costs, and improve the overall profitability of the project.
Mobility and flexibility, fast turnaround time and production speed
The equipment adopts an integrated trailer structure, supporting the whole trailer transportation, can be quickly transferred across the region, without the need for complex concrete infrastructure construction. The whole set of equipment installation and commissioning cycle is only 3-7 days, and it can be put into operation and used on the ground, which is perfectly suitable for remote sites, narrow construction sites, short-term temporary projects, and multi-point decentralized maintenance projects, and completely solve the problems of difficult transfer of large-scale equipment, expensive entry, and cost-effective for small projects.
Simple operation and maintenance, low equipment failure rate
Equipment optimization has streamlined the complex structure of traditional mixing equipment, with fewer redundant parts, fewer failure points, and strong operational stability. The daily maintenance process is standardized and simplified, and ordinary operators can complete daily inspection, cleaning and maintenance work with simple training, without the need for professional and technical personnel to be stationed on site for a long time. With intelligent fault warning and overload protection function, greatly reducing the probability of equipment downtime and work, long-term operation and maintenance costs are extremely low, suitable for small and medium-sized construction enterprises to use for a long time.
Accurately adapted to small projects, no waste of energy consumption.
The equipment adopts continuous discharging mode, which can discharge material stably without batch waiting interval, and the discharging speed precisely matches the paving rhythm of small and medium-sized pavements. Different from the large-scale mixing plant, which has the disadvantages of idle capacity and high idle energy consumption in small projects, the mobile drum mixing plant can produce on demand, eliminating the waste of capacity and energy, and taking into account the quality of construction, operational efficiency and economic cost-effectiveness.
Mobile drum asphalt mixing plant and stationary asphalt mixing plant positioning different, adaptable scene significant differences, corresponding to different scales of road projects, the specific differences are as follows:
|
Comparison Project |
Mobile Drum Asphalt Batching Plant |
Fixed Asphalt Batching Plant |
|
Motorized transfer performance |
Trailer design, fast transfer, no site restrictions |
Fixed installation, can not be moved, only for fixed sites |
|
Installation and commissioning period |
3-7 days for quick start-up, no need for complex infrastructure |
2-4 weeks, requires professional infrastructure construction and commissioning |
|
Production mode |
Continuous flow mixing, no batch interval, uninterrupted production Intermittent |
batch production, there is a waiting period for operation |
|
Scenarios |
Road maintenance, small-scale renovation, decentralized short-term projects |
Highway, large-scale municipal paving, large-scale long-term projects |
|
Comprehensive investment cost |
Low procurement, transportation and operation and maintenance cost, low investment risk Large investment |
in the early stage, high operation and maintenance cost and energy consumption cost in the later stage. |
|
Energy-saving effect |
Production on demand, no energy consumption and waste of production capacity in small projects |
High basic energy consumption and waste of idle production capacity in small projects. |
Nowadays, more and more road construction teams and engineering enterprises give priority to mobile drum asphalt mixing plant, the core reason is its high flexibility, low risk, high return product characteristics. First of all, the equipment can realize the construction site on-site production of asphalt mixture, completely eliminating the cost and time of long-distance material transportation, significantly shortening the construction cycle, especially suitable for remote, scattered construction sites and emergency repair projects.
Secondly, the equipment investment threshold is low, simple operation and maintenance, small and medium-sized construction teams do not need to invest in large amounts of fixed assets, you can undertake all kinds of road maintenance, pavement renovation projects, effectively broaden the scope of business. At the same time, the characteristics of low failure and easy maintenance of the equipment reduce the dependence on professional mechanics, effectively solving the problem of high labor costs and shortage of technicians in the construction industry.
In addition, the equipment comes standard with standardized environmental configuration, can easily cope with the strict environmental construction requirements around, to avoid environmental protection does not meet the standards led to the suspension of rectification problems, to ensure the smooth progress of the project, is the small and medium-sized road construction equipment just needed.
Selection of high adaptability, cost-effective mobile drum asphalt mixing plant, do not blindly select the type. Construction companies need to combine their own engineering scale, site construction conditions, local environmental policies and later operation and maintenance needs of a comprehensive assessment of the full range of accurately match the equipment model, to effectively avoid the model does not match, excess performance, waste of investment and other issues, the following optimized core selection of the consideration of standards:
Combined with the scale of the project, accurately match the equipment capacity
The capacity of the equipment is the core basis for selection, and the model should be selected according to the daily paving volume, construction frequency and project type. For rural road maintenance, local pavement repair, sporadic renovation and other small lightweight projects, small and medium-sized mobile drum asphalt mixing plant can fully meet the construction needs, more cost-effective; in the face of municipal road reconstruction, batch pavement renovation and other continuous small and medium-sized projects, you can prioritize the use of upgraded high-capacity models, to ensure that the equipment is continuous and stable production, effectively improve the overall construction progress, and eliminate the problem of insufficient production capacity to slow down the construction period. The problem of slowing down the construction period due to insufficient capacity is eliminated.
Select the corresponding capacity model according to the daily paving volume and project type. For small projects such as rural road maintenance and local pavement repair, it is suitable for small and medium-sized drum mixing equipment; for municipal road renovation and batch of small and medium-sized projects, it can choose high-capacity upgraded models to meet the demand for continuous mass production.
Based on site conditions, suitable for site and fuel conditions
The space size, access conditions and fuel supply conditions of different construction sites vary greatly, so the selection must be fully adapted to the actual working conditions. For mountainous roads, narrow construction sites, and temporary restricted construction sites, it is preferred to choose compact equipment with compact body, small footprint, and convenient access to the site, which can easily break through the site restrictions; for remote construction sites and construction scenarios with single or unstable fuel supply, it is recommended to choose multi-fuel compatible models, which can flexibly adapt to a variety of fuels, such as diesel and natural gas, and can effectively avoid equipment downtime due to interruption of the fuel supply to ensure stable operation throughout the construction process. Stable operation throughout the construction.
Fully consider the size of the construction site, road access conditions, and local fuel supply. Compact body is preferred for narrow sites and mountainous roads, while multi-fuel compatible models are preferred for sites with single fuel and unstable supply to ensure stable operation of the equipment.
Fitting the local policy to meet the requirements of environmental protection construction
Nowadays, the environmental protection control of construction sites is becoming more and more strict, and the selection of dust removal configuration is crucial. Need to strictly control the local construction environmental emission standards, matching the corresponding dust removal system. Conventional ordinary construction site, the standard wet dust removal equipment can effectively adsorb construction dust, and successfully pass the environmental acceptance; for the environmental control of strict urban areas, scenic spots, key control areas, you can upgrade the bag dust removal system, significantly improve the dust purification effect, minimize construction dust and exhaust emissions, to achieve green compliance construction, to avoid environmental issues caused by the project shutdown rectification.
Combined with the local environmental protection policy to choose the dust removal configuration, conventional site wet dust removal can meet the acceptance requirements; environmental protection control of strict areas, can upgrade the bag filter system, reduce dust emissions, compliance construction.
Focus on long-term use, attention to after-sales and operation and maintenance costs
Equipment procurement should not only look at the initial selling price, but also consider the long-term operation and maintenance costs and after-sales protection ability. When selecting equipment, give priority to regular manufacturers with mature structure and technology, stable market reputation and perfect after-sales system. Focus on verifying the universality of the equipment wearing parts, procurement convenience and daily maintenance costs, from the source to reduce the probability of equipment failure in the late stage and hidden operation and maintenance expenses. Perfect after-sales protection can provide timely equipment overhaul, technical guidance and parts support, all-round protection of long-term stable operation of the equipment, effectively extend the service life of the equipment, and enhance the comprehensive return on investment of the equipment.
Priority is given to equipment from manufacturers with mature structure and perfect after-sales system, confirming the convenience of supplying wearing parts and daily maintenance costs, reducing the risk of equipment failure at the later stage and hidden operation and maintenance expenses from the source, and guaranteeing the long-term stable operation of the equipment.
Practical tips to improve the operational performance of the equipment
Standardized operation and scientific maintenance can effectively enhance the production stability of the mobile drum asphalt mixing plant, extend the service life of the equipment, to protect the quality of the finished asphalt mixture.
Daily before the start of the need to accurately calibrate the aggregate, asphalt, mineral powder metering system, to ensure the accuracy of the material ratio, to eliminate the problem of unqualified mixture from the source; according to the ambient temperature, asphalt type, the production temperature is controlled at a stable 140-180 ℃ standard range, to avoid high temperature caused by the aging of asphalt, the low temperature leads to insufficient bonding force.
Regularly clean the drum mixing blades, conveying equipment and dust removal devices to prevent the accumulation of material blockage, to ensure smooth production; regular lubrication of transmission components, inspection, to reduce mechanical wear and tear. At the same time, strengthen the training of operators, according to real-time construction conditions, flexible adjustment of equipment parameters, give full play to the advantages of continuous and efficient production equipment.
Mobile drum asphalt mixing plant stability, but long-term outdoor work by the environment, operating habits, there may be minor failures, timely investigation and treatment can be avoided construction interruption.
Asphalt mixture ratio instability
Mostly by the metering system deviation, uneven feeding, mineral powder pipeline blockage. Solution: recalibrate the asphalt pump and aggregate feeding system accuracy, clean up the clogged pipeline, check the operating status of the frequency feeding equipment to ensure uniform and stable material delivery.
Construction dust emission exceeds the standard
The main reason is that the dust pipe is clogged and the filter element is aging and failing. Solution: clean up the dust removal components regularly, replace the aging filter element, adjust the air volume of dust removal fan to ensure that the dust emissions comply with environmental standards.
Mixed material mixing is not uniform
Caused by abnormal drum temperature, damaged mixing blades and inconsistent feeding speed. Solution: fine-tune the temperature of the combustion system, replace the deformed and damaged blades, and unify the feeding speed of each bin to ensure that the materials are fully mixed.
Discharge jam, material blockage
It is mostly caused by the accumulation of material residue in the equipment and high humidity of raw materials. Solution: Thoroughly clean up the drum and discharge conveyor residues, strictly control the quality of aggregate drying, eliminate wet materials into the machine, to avoid clogging problems.
Mobile drum asphalt mixing plant is a flexible, low-cost, high-efficiency asphalt production equipment for modern small and medium-sized road construction and maintenance projects. Its integrated continuous mixing design, fast turnaround capacity, low failure rate and controllable operating costs, perfectly make up for the shortcomings of the fixed mixing plant in the dispersed, short-term, remote projects, becoming the preferred equipment for road maintenance, rural road construction, small municipal renovation projects.
Construction enterprises can maximize the operating efficiency of the equipment, stabilize the quality of road construction and effectively reduce the comprehensive cost of the project by accurately selecting the model according to their own project needs, standardizing daily operation and equipment maintenance, and mastering the basic troubleshooting skills, so it is a high-quality equipment investment for small and medium-sized engineering teams to enhance their market competitiveness and expand their construction business.
