目前国内生产的400马力冷再生机，可以对沥青路面灰土路基进行冷再生作业，还可以当路拌机用。国外主流厂家早已不再生产类似功率的专用路拌机，取而代之的是路面冷再生机，除了路面路基冷再生施工，其使用范围还包括了传统的路拌机应用范围，而且施工效率大大高于传统的路拌机。对照国外的经验，功率为400马力的小冷再生机(相对600马力的冷再生机)，将会逐步代替国内的传统后置路拌机。冷再生机比传统的后墨转子路拌机施工质量稳定，这得益于冷再生机的结构特点（铣刨转子在两桥中间〉，但国内生产的大多数400马力冷再生机与后置转子路拌相比，工作速度却不占优势。徐州锐马生产的WR2100L路面冷再生机，在实际应用中，利用可换挡的双转速转子，有着普通路拌无法比拟的优势，工作时可以速度更快,拌和效果可调，混合料可以打的更细。

The 400 horsepower cold regeneration machine currently produced in China can perform cold regeneration operations on asphalt pavement and lime soil subgrade, and can also be used as a road mixer. Mainstream foreign manufacturers no longer produce specialized road mixers with similar power, but have replaced them with road surface cold recycling machines. In addition to road surface and roadbed cold recycling construction, their scope of use also includes the application range of traditional road mixers, and the construction efficiency is much higher than that of traditional road mixers. Based on foreign experience, a small cold regeneration machine with a power of 400 horsepower (compared to a cold regeneration machine with a power of 600 horsepower) will gradually replace the traditional rear mounted road mixer in China. The construction quality of the cold regeneration machine is more stable than that of the traditional rear ink rotor road mixer, thanks to the structural characteristics of the cold regeneration machine (the milling rotor is in the middle of the two bridges). However, most domestically produced 400 horsepower cold regeneration machines do not have an advantage in working speed compared to rear rotor road mixers. The WR2100L road cold regeneration machine produced by Xuzhou Ruima has advantages in practical application that ordinary road mixers cannot compare to, using a shift able dual speed rotor. It can work faster, with adjustable mixing effects and finer mixing of the mixture.

国内的路拌机拌和转子的转速往往只有一种，如果有厂家说转速可调，那是调整液压泵的输出排量，通过减小泵的排量来降低转子转速，实际同时也降低了输出功率，降低了机器的工作效率，没有实际意义，所以没有操作司机会降低转子转速干活。还有厂家说行走有两个挡，这和转子工作挡是两个概念，目前国内所有厂家生产的路拌机都有两个行走工作挡。徐州锐马生产的WR2100L沥青路面冷再生机铣创有两个转子工作挡，两挡转速各有一个大转速，这两个转速是全功率的双转速。在实际应用中，许多用户已体会到双转速的优点来。举两个实际例子。

There is often only one type of speed for the mixing rotor of domestic road mixers. If a manufacturer claims that the speed is adjustable, it is to adjust the output displacement of the hydraulic pump and reduce the rotor speed by reducing the pump displacement. In fact, it also reduces the output power and reduces the efficiency of the machine, which has no practical significance. Therefore, without operating the driver, the rotor speed will be reduced to work. Some manufacturers also say that there are two gears for walking, which is a different concept from the rotor working gear. Currently, all road mixers produced by domestic manufacturers have two walking working gears. The WR2100L asphalt pavement cold recycling machine produced by Xuzhou Ruima has two rotor working gears, each with a high speed. These two speeds are full power dual speeds. In practical applications, many users have realized the advantages of dual speed. Give two practical examples.

一台WR2100L在东营施工，这个作业面是灰土拌和，要求拌和深度为35公分，比一般的灰土拌和工作深度深很多。当时工地有两台后置路拌，一台徐州雷马的WB21H，一台徐工的WB21，两台拌和机在压力很高的情况下〈达到了25Mpa )，一分钟也只能走3米多，而我们的WR2100L采用一档，压力在20Mpa时，行走速度也能跑7一8米/分钟。到了年底机器老板去结算，这台冷再生的平均油耗明显的低，按平方计算，油耗比路拌机低40%，租赁方很满意，跟机器老板说明年一定再来。这是一档低速大扭矩的应用。还有一个工地，在淄博，业主要求灰土拌和要打的细，为达到要求，一般的后置路拌需要打两遍才能达到要求，还是这个用户的WR2100L,采用二挡，一遍就达到了业主的要求，工地施工追求的是效益，一刀活达到要求肯定比两刀省油。

A WR2100L machine is being constructed in Dongying, which involves mixing lime and soil. The required mixing depth is 35 centimeters, which is much deeper than the usual lime and soil mixing depth. At that time, there were two rear mounted road mixers on the construction site, one from Xuzhou Leima's WB21H and one from XCMG's WB21. Both mixers could only travel more than 3 meters per minute under high pressure (reaching 25Mpa), while our WR2100L used first gear and could travel at a speed of 7-18 meters per minute even at a pressure of 20Mpa. At the end of the year, the machine owner went to settle the bill, and the average fuel consumption of this cold regeneration machine was significantly lower. Calculated by square, the fuel consumption was 40% lower than that of the road mixer. The lessee was very satisfied and explained to the machine owner that they would definitely come back this year. This is an application of low speed and high torque. There is also a construction site in Zibo, where the owner requires the mixing of lime and soil to be fine. In order to meet the requirements, the general rear road mix needs to be mixed twice. This user's WR2100L uses second gear and meets the owner's requirements in one go. The construction site pursues efficiency, and achieving the requirements with one go is definitely more fuel-efficient than two cuts.

在灰土拌和实际应用中，机主一般都是采用一档工作，机器有劲，工作速度快，损耗还小，工作速度明显比路拌要快很多。

In the practical application of lime soil mixing, the machine owner generally uses first gear operation. The machine is powerful, operates at a fast speed, and has low losses. The working speed is significantly faster than road mixing.

在冷再生机的本行——沥青路面冷再生施工中，也可灵活选择工作档位，工作面较硬时，用一档，明显比其它400马力冷再生机速度更快，破碎粒度也能达到要求，若工作面较软，用二档，高转速，可以将成品料打得很细，比其它400马力冷再生机破碎料度更小。灵活的应用，全在现场掌握。转子转速增加档位，整机的成本增加了，但带来的效益却远远高于增加的成本。徐州锐马在研发各型机器时，一直把机器性能放在首位，而将成本放在次要的位置上，在机器技术性能上做国内的先行者。

In the field of cold recycling machines - asphalt pavement cold recycling construction, the working gear can also be flexibly selected. When the working surface is hard, using the first gear is significantly faster than other 400 horsepower cold recycling machines, and the crushing particle size can also meet the requirements. If the working surface is soft, using the second gear and high speed can finely crush the finished material, which is smaller than the crushing particle size of other 400 horsepower cold recycling machines. Flexible applications can be mastered on-site. The increase in rotor speed and gear increases the cost of the entire machine, but the benefits it brings far exceed the increased cost. When developing various types of machines, Xuzhou Ruima has always prioritized machine performance and placed cost in a secondary position, becoming a pioneer in machine technology performance in China.