In Yang Yuanzhao's cognition, the roadbed has never been the most important aspect, nothing more than digging and digging flat, but in the absence of any machinery, of course, the tractor is considered a machine, in the leveling of the land, has a great effect, but in terms of rolling the road, the efficiency of the tractor is too low, the crawler of the tractor at that time, considering the reduction of the pressure per unit area, to prevent the tractor from falling into the soil, unexpectedly, it has become a disadvantage of leveling the land.

After the initial completion of the leveling, the tractor went back and forth several times, just pressed the floating ash to be solid, the overall structure, but still loose, can not meet the conditions for road construction, not to mention Li Mingsheng, even Qian Hu also knows, he will not build the road, but will build a house, lay the foundation, the foundation in the ditch after digging, can not be directly put into the bricks, must use stones, inch by inch to tie solid, this thing his construction team still has, just use it.

The stones used to lay the foundation, several people in a group, hammer together, the land is strong, but the speed is too slow, the body consumption is too large, even if it is a strong man like Niu Er, working for two hours in a row, the body will be exhausted.

It seems that if this problem is not solved, it is a joke to build a 50-kilometer road in a short time.

About road construction machinery, Yang Yuanzhao sees the most, is the road roller, whether it is asphalt road, or the foundation, the effect of the roller is irreplaceable, with the help of huge gravity and smooth rollers, the roller can make the land, in a short period of time, become smooth, save a lot of time, this era, with manpower, need huge stones. A few strong men ran up and smashed down. Not to mention a 50-kilometer, 7.5-meter-wide road. Even if it is one kilometer, it is a difficult thing, and the previous 300 meters were at the cost of three people losing their strength.

For the smooth passage of the road, and also for the construction of the road in the future, to lay a good foundation, there is a huge difference between machine and artificial.

In 1908, in the barren northwest of China. Yang Yuanzhao is an engine engineer, a road construction machine, the most important power problem, he can easily solve it, the rest is just the structure, which kind of roller structure to use. The structure must be designed to fit the use.

The rollers of later generations are divided into many types, and the one that rolls the road before and after, and the one that is particularly huge in size. And salvation is a single roll,

After thinking about it, Yang Yuanzhao knew. For the time being, a real roller. He could not produce it, hydraulic. Transmission, including the strength of the overall structure, which must be constantly designed and implemented, most of his work is still on the improvement of China's existing equipment, especially the future cotton textile equipment, he has a lot of ideas, need a little bit to design, can only use a tricky method.

What inspired him was the countryside, the stone stone used to grind the dough, the stone stone is pulled by the livestock, and the stone stone is constantly rolling on a flat plate, which can turn Miley into flour, and the road roller can also choose this, the tractor and this stone stone, to be precise, use special steel to form a steel roller, without considering the efficiency, it can be completely used by dragging.

In terms of power, the tractor is, huge horsepower, in the muddy and unbearable field, can easily operate, not to mention on the relatively smooth road, just the iron roller behind this, in order to achieve better results, some heavier metals will be added, such as tungsten, osmium, platinum, of course, the latter two prices are too high, more of the former, and some lead.

The cost of heavy metals will make the price of the roller rise, such heavy metals, are extracted by Yang Yuanzhao in the all-in-one machine, add it and well, the outer layer is directly made of synthetic steel with high strength, the length and width of the roller are not more than 4 meters, but the weight is extremely amazing, reaching as much as 11 tons, and the tractor also needs full horsepower if it wants to pull up.

The huge gravity and the flat rollers will make the rolling work from heavy manpower to mechanical propulsion.

Qian Hu waited in the courtyard as a matter of course, and in the past few days, under Yang Yuanzhao's order, they stopped work, just to do a basic measurement, and before they found a better way to level the land, they stopped for the time being.

"Here's a few people, help me!" Yang Yuanzhao suddenly pushed open the door and came out, startling Qian Hu, Qian Hu called to pick up people, and walked into the mysterious warehouse, in the wide warehouse, there was a huge hollow steel pipe.

It is said to be hollow, but it is not so accurate, it has a thickness of 15 cm, the space inside is very large, on both sides, there are also huge spirals, and the most important thing is that there is a thick roller in the center.

I haven't seen it for a long time, but Qian Hu still honestly assembles this huge wheel according to Yang Yuanzhao's instructions.

This is also Yang Yuanzhao's helplessness, he can directly take it out at one time, but such a large creation, at least China can't produce it, it is better to take out the parts to assemble, and design it slightly, so that the parts can be stuck into the round, and direct one-time molding, what is the difference.

On the ground, in addition to the hollow shell, there is a bunch of strange black metal, extremely heavy, a few meters long, the thickness of the bowl steel bar, almost hundreds of kilograms, they with the help of the hoist crane, it took more than two hours, and finally the steel roll was assembled, huge volume, domineering appearance, the most important thing is the weight, Qian Hu They are not able to directly weigh the weight of the steel roller, just through them, the weight transferred into the steel roller, I am afraid that there are not 10 tons. For hundreds of kilograms or even a ton that can be called unimaginable weight, this thing is too heavy for him.

Qian Hu also understood a little that Yang Yuanzhao was doing this thing, obviously, it was for the purpose of rolling the road, Yang Yuanzhao was not satisfied with the progress of their construction, so he made this thing.

Yang Yuanzhao is very magical, this is the only thought in Qian Hu's heart, it seems that no matter how many difficulties there are, no matter how many difficulties there are, he can easily solve them.

"Get a tractor!"

"Yes, Boss!" Qian Hu led the order to go out, and after a while, a sudden voice came. A tractor entered the yard, and Yang Yuanzhao opened another gate of the warehouse. Let the tall tractor enter the warehouse.

Hold the parts and tools you have prepared. On the tractor, a hook was fixed, and then connected with steel bars and steel rollers, when the perfect combination, Yang Yuanzhao waved his hand and said: "Go, pull it out and try!" ”

The classic pattern of a roller is to place the steel rollers in front of it with the help of a driving force. Let the roller run smoothly and ensure the efficiency of rolling the road, but it is very high for the transmission and the overall design, at least, which is not something that Yang Yuanzhao can solve now, temporarily placed behind the tractor, and in front with the power of the tractor, it cannot be pushed forward, and it is placed in the back. After fixing with steel bars, the roadbed can be treated for a certain amount of time, and the speed is relatively fast.

This one is relatively fast, just relative to manpower. Compared with the speed of the road roller in later generations, I don't know how much slower, but later generations are not only powerful road rollers. The design is also extremely detailed, taking into account almost every step.

At this point. Yang Yuanzhao can't do it for the time being, and he can make such a steel roller. It's already the result of racking your brains.

The heavy steel roller, to pull it up, it is not easy, the tractor's engine came with a roar, even black smoke bursts, booming for almost half a day, the steel roller was finally slowly dragged up, the steel roller followed the tractor slowly moved, this warehouse is good, the outside land is good, just found at random before, simply made some treatment, leveled the land, and did not even use cement, so, in the face of more than ten tons of powerful steel roller, the solid ground that was flat and solid, were pressed down deep traces, pressed over the road surface, fine and flat, than with artificial, I don't know how much stronger.

The problem of rolling the road was solved at once, and with this machine, his speed represents the efficiency of the day, and he doesn't even need to repeat it a second time.

The people of Baotou are used to seeing tractors, and the driving of tractors can not arouse their interest, but this time it is different, the tractors are emitting black smoke, and they seem to be swaying and pulling huge objects behind, and they seem to be very tired.

How strong is the tractor, these people know that when plowing the land and harvesting, a tractor is probably more useful than a hundred or ten people, and even pulling goods, the tractor is worthy of being strong, it can be imagined that this steel roll is strong.

Everyone looked at the steel roller slowly like a monster, and it was a question whether they could walk 3 meters per second, and when they turned their eyes behind the tractor, a few smart people understood the effect of the tractor almost instantly.

The original flat land was pressed out of a ditch 4 meters wide by a tractor and collapsed down to about 15 centimeters, and the steel rolled away, and all the soil layers, gravel, and sand were pressed into a fine structure, which was smooth like a mirror.

"Is this still a dirt road?" A passer-by squatted down, stabbed the fine dirt road with a stick in his hand, the dirt road in Baotou, without special paving, at first there were more people walking, and later in order to prevent rain, some people threw gravel, sand, and passed through the people walking and driving pressure, and slowly formed the road, which is considered to be a better road condition, but it is still muddy when it rains, and occasionally the rain is too big, and there will be potholes, and now, there is no qiē, only a smooth and fine structure remains.

Yang Yuanzhao is very clear that this kind of structure pressed by gravity will become damaged under the passage of time, and the rain is the biggest invasion of him, only asphalt roads and cement roads can avoid this situation, the surface is impermeable, and the bottom is relatively solid, which is the foundation of good road conditions.

The huge steel, roaring, and somewhat laborious tractors are a huge aura, attracting all people, who are themselves somewhat interested in building roads, plus this road is the road of Baotou, and many people come to watch every day at the site of road construction.

It is the focus of attention, Qian Hu is more energetic, before digging and leveling the roadbed, the steel roller back and forth twice, the roadbed is compacted, and the three-layer soil is used to fill in, after further compaction, the roadbed is basically completed, the speed, than the first day, several times faster, one day, at least 20 kilometers of roadbed, so it seems that the use of this roller, up to 3 days of time, can complete the entire roadbed construction.

Yang Yuanzhao came over to inspect it several times, and asked Li Mingsheng, who is most familiar with cement roads, to make a judgment that these roadbeds are very good and can withstand the huge pressure of cement and even vehicles on cement roads.

After more than 20 different proportions of the cement formula, a more suitable concrete formula was temporarily produced, and Li Mingsheng handed over the formula to Qian Hu, who immediately began the intense construction.

A large number of iron plates, a 7-meter-wide roadbed, surrounded by a layer of steel bars, which is not reinforced concrete steel bars, which is conducive to increasing strength, or fixing the height of cement, this work for the cast-in-place roof of the people, the efficiency is also relatively high, more than 300 labor, it took more than three days to complete 3000 meters.

3000 meters, enough to build for a period of time, the mixer began to roar, from the cement plant, directly pulled out of the cement, mixed with whom, sand, stones, etc., according to the proportion designed by Li Mingsheng, when a mixer mixed the material, the bulldozer was waiting, put a car of concrete, to put into different positions, when the iron plate was filled with a variety of cement, many workers walked on the cement pavement, began to be responsible for the pavement certificate, with a huge mud mold, on the cement road, kept wiping back and forthto make the cement road smoother.

There are 50 kilometers of cement roads, which have been laid out, and under the continuous construction, the necessary manpower has been invested, especially the use of some large machines, bulldozers, and road rollers, so that the progress of this cement road continues to increase. What is more satisfying is that the personnel used by Qian Hu are also increasing, from more than 300 people at the beginning, to later, 50 various vehicles, more than 1,800 personnel, the speed of construction has been significantly accelerated, so the personnel have been promoted so quickly, the reason is that the cement road is relatively similar to ordinary buildings, and there is no technical content.

A large number of personnel and machinery, greatly accelerated the overall progress, the construction speed of the entire highway, also significantly accelerated, less than 30 days, the whole highway has been built seventy-seven-eighty-eight, the front, the first part of the construction, from Baotou to the cement road of the cement plant, a total of more than ten kilometers of appearance, has been basically completed, the iron plate has not been removed, ready to wait until 15 days later, and then the overall removal, but above, can walk around and pass vehicles. (To be continued......)