冷再生机：道路养护的“绿色革命者”

　　Cold Recycling Machine: The 'Green Revolutionary' of Road Maintenance

　　在公路养护领域，一台集铣刨、破碎、拌和、整形功能于一体的机械巨兽正掀起一场资源循环利用的革命。冷再生机作为道路再生技术的核心装备，通过将旧路面材料“变废为宝”，不仅重塑了道路结构，更重新定义了绿色施工的内涵。

　　In the field of highway maintenance, a mechanical behemoth that integrates milling, crushing, mixing, and shaping functions is sparking a revolution in resource recycling. As the core equipment of road regeneration technology, the cold recycling machine not only reshapes the road structure by turning old pavement materials into treasures, but also redefines the connotation of green construction.

　　一、技术原理：从破碎到重生的闭环系统

　　1、 Technical principle: Closed loop system from fragmentation to rebirth

　　冷再生机的核心工艺可概括为“五步再生法”：首先通过铣刨转子以每分钟数百转的转速破碎旧路面，破碎深度可达400毫米；随后智能喷洒系统根据材料含水量自动调节泡沫沥青或乳化沥青的添加量，配合水泥、石灰等稳定剂形成再生混合料；接着通过双螺旋搅拌装置实现均匀拌和；最终由摊铺系统完成整形，经压路机压实后形成新的道路基层。

　　The core process of the cold recycling machine can be summarized as the "five step regeneration method": firstly, the old road surface is crushed by milling the rotor at a speed of hundreds of revolutions per minute, with a crushing depth of up to 400 millimeters; Then the intelligent spraying system automatically adjusts the addition amount of foam asphalt or emulsified asphalt according to the water content of the material, and forms the recycled mixture with cement, lime and other stabilizers; Then, uniform mixing is achieved through a double helix mixing device; The final shaping is completed by the paving system, and a new road base is formed after compaction by a roller.

　　以维特根W380CR为例，其搭载的VARIO喷洒系统能精准控制0.1-3.0升/平方米的喷洒量，配合下切式铣刨模式，使再生材料级配均匀度提升40%。该设备每小时可处理800吨旧料，相当于传统工艺3倍的施工效率。

　　Taking the Wittgen W380CR as an example, its VARIO spray system can accurately control the spray volume of 0.1-3.0 liters per square meter, and with the downward cutting milling mode, it can improve the uniformity of recycled material grading by 40%. This equipment can process 800 tons of old materials per hour, which is equivalent to three times the construction efficiency of traditional processes.

　　二、核心优势：经济环保的双重突破

　　2、 Core Advantage: Dual Breakthrough in Economic and Environmental Protection

　　成本革命：江西吉康高速改扩建项目数据显示，采用乳化沥青厂拌冷再生技术，每公里造价较传统热拌沥青降低48%，节省加热能源80%以上。徐工XLZ3805R机型在沈海高速养护中，通过100%利用旧料，使单公里材料成本下降220万元。

　　Cost Revolution: Data from the Jikang Expressway Reconstruction and Expansion Project in Jiangxi Province shows that the use of emulsified asphalt plant mixed cold recycling technology reduces the cost per kilometer by 48% compared to traditional hot mix asphalt, saving over 80% of heating energy. The XCMG XLZ3805R model has reduced the material cost per kilometer by 2.2 million yuan through 100% utilization of old materials in the maintenance of Shenhai Expressway.

　　环保效益：每再生1公里道路可减少二氧化碳排放120吨，相当于种植6000棵树的环境效益。维特根设备采用的4支腿独立浮动技术，使施工扬尘降低75%，噪音控制在85分贝以下。

　　Environmental benefits: Each kilometer of road regeneration can reduce carbon dioxide emissions by 120 tons, equivalent to the environmental benefits of planting 6000 trees. The four leg independent floating technology adopted by the Wittgen equipment reduces construction dust by 75% and controls noise below 85 decibels.

　　质量提升：泡沫沥青再生层的动稳定度可达6000次/毫米，抗车辙能力是传统基层的3倍。在河北某国道改造中，冷再生基层使道路使用寿命延长至15年，较传统工艺提升50%。

　　Quality improvement: the dynamic stability of foam asphalt regeneration layer can reach 6000 times/mm, and the rutting resistance is three times that of traditional base course. In the renovation of a national highway in Hebei Province, the use of cold recycled base layer has extended the service life of the road to 15 years, which is 50% higher than traditional technology.

　　三、应用场景：全路况覆盖的解决方案

　　3、 Application scenario: Solution for full road coverage

　　高速公路养护：针对车辙、裂缝等病害，采用同步摊铺工艺实现基层与面层双层再生。如沪昆高速浙江段使用达刚DL2500机组，在48小时内完成10公里双向车道的再生作业，施工期间仅封闭单幅车道。

　　Highway maintenance: For diseases such as ruts and cracks, synchronous paving technology is adopted to achieve double-layer regeneration of the base and surface layers. If the Zhejiang section of the Shanghai Kunming Expressway uses the Dagang DL2500 unit, it can complete the regeneration operation of 10 kilometers of two-way lanes within 48 hours, and only close the single lane during the construction period.

　　城乡道路改造：徐工XLZ2103SIV机型在县乡公路升级中展现独特优势，其2.1米铣拌宽度可灵活穿梭于狭窄路段，配合蟹行转向功能实现贴边作业，使道路拓宽工程效率提升60%。

　　Urban and rural road renovation: The XCMG XLZ2103SIV model has demonstrated unique advantages in the upgrading of county and township roads. Its 2.1-meter milling and mixing width can flexibly shuttle through narrow sections, and with the crab turning function, it can achieve edge fitting operations, increasing the efficiency of road widening projects by 60%.

　　特殊场景应用：在机场跑道修复中，冷再生机通过精确控制再生深度（误差±5毫米），确保跑道平整度达到民航I类标准。青岛流亭机场跑道再生项目验证，再生层摩擦系数较传统工艺提高15%。

　　Special scenario application: In airport runway repair, cold regenerative aircraft ensure runway flatness meets civil aviation Class I standards by precisely controlling the regeneration depth (with an error of ± 5 millimeters). The verification of the runway regeneration project at Qingdao Liuting Airport shows that the friction coefficient of the regeneration layer has increased by 15% compared to traditional processes.

　　四、技术演进：智能化引领行业变革

　　4、 Technological Evolution: Intelligence Leads Industry Change

　　现代冷再生机已进入4.0时代，以徐工XLZ3805R为代表的智能机型配备：

　　Modern cold recycling machines have entered the 4.0 era, and intelligent models represented by XCMG XLZ3805R are equipped with:

　　功率自适应系统：当铣拌阻力增加时，微控器自动调节行走系统功率，确保设备始终处于最佳工况

　　Power adaptive system: When the milling and mixing resistance increases, the microcontroller automatically adjusts the power of the walking system to ensure that the equipment is always in optimal working condition

　　3D摊铺控制系统：通过GPS定位实现毫米级平整度控制，减少人工修正量

　　3D paving control system: achieves millimeter level flatness control through GPS positioning, reducing manual correction

　　远程运维平台：实时监测发动机转速、液压压力等200余项参数，故障预警准确率达92%

　　Remote operation and maintenance platform: Real time monitoring of more than 200 parameters such as engine speed and hydraulic pressure, with a fault warning accuracy rate of 92%

　　在宁夏某沙漠公路养护中，智能冷再生机组通过物联网技术实现无人化作业，在50℃高温环境下连续工作72小时，创造单日再生12公里的纪录。

　　In the maintenance of a desert road in Ningxia, an intelligent cold recycling unit achieved unmanned operation through IoT technology, working continuously for 72 hours in a high temperature environment of 50 ℃, setting a record of 12 kilometers of regeneration per day.

　　五、行业前景：万亿市场的绿色引擎

　　5、 Industry prospects: Green engine for trillion dollar market

　　据中国工程机械工业协会预测，到2030年国内道路再生市场规模将突破3000亿元。随着“双碳”目标推进，冷再生技术渗透率有望从当前的18%提升至45%。维特根、徐工等龙头企业正在研发氢能源动力冷再生机，预计可使碳排放再降低60%。

　　According to the prediction of the China Construction Machinery Industry Association, the domestic road regeneration market size will exceed 300 billion yuan by 2030. With the advancement of the "dual carbon" target, the penetration rate of cold recycling technology is expected to increase from the current 18% to 45%. Leading companies such as Wittgen and XCMG are developing hydrogen powered cold regeneration machines, which are expected to reduce carbon emissions by another 60%.

　　从挪威首条冷再生道路到覆盖全球60个国家的应用网络，这项起源于20世纪90年代的技术，正通过持续创新书写着道路养护的绿色未来。当冷再生机滚过之处，不仅是旧路面的重生，更是一个资源循环利用时代的开启。

　　From Norway's first cold recycling road to an application network covering 60 countries worldwide, this technology, which originated in the 1990s, is writing a green future for road maintenance through continuous innovation. When the cold recycling machine rolls over, it is not only a rebirth of the old road surface, but also the opening of an era of resource recycling.

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