The various yamen are busy, and the transfer of officials, especially the transfer of court officials, is not a trivial matter.

Xiao Yu and Chen Shuda played a concert to request an experimental reform of the work system of the Ministry of Industry.

Li Yuanji only inquired about the general situation and then nodded and agreed, and took the Guannai and the Central Plains as preliminary test areas, and after the situation stabilized, he decided whether to fully promote it.

Then, the two of them got busy.

Xiao Yu was busy greeting various places and getting them ready at the same time.

Chen Shuda was busy selecting people to see who would be more suitable to go out.

And they are busy with them, the Academy of Sciences, which has been a lot depressed lately.

Many projects have been halted, or rather, curtailed.

This has stopped a large number of researchers.

The same situation happened even on the side of the train crew, about thirty or so people, and now there was nowhere to go.

In the end, it was Xu Hai who slapped his hand, and he personally led the more than thirty people to the apprentice Jiang Tian to help, if the situation was possible, those people would stay there in the future.

Jiang Tian's task is not light, and his manpower is far from enough.

"Master, it's great that you can come to help, and the students will be able to steal a lazy ...... in the future" Jiang Tian joked with a smile, and the fact that Master Xu Hai was able to bring someone to help did surprise him.

"You kid, don't think about lazy things, Lao Tzu came here to give you a start, in terms of trucks, now your achievements have already surpassed Lao Tzu." Xu Hai pointed at Jiang Tian and scolded with a smile, but he was also telling the truth.

In terms of boiler ability, Jiang Tian is not as good as Xu Hai, but in terms of trucks, Jiang Tian, an apprentice, surpasses Xu Hai.

Even, it is not an exaggeration to compare Jiang Tian to the first person in Datang Truck, while Xu Hai and others are the first person in Datang Train, although they are all cars, they are completely different.

Well, the trucks are really comfortable to drive with the seats, and in the near future, all the trains are equipped with seats.

Although those train drivers don't have to operate the steering wheel, one stop is a day's time, and it is quite tiring.

"Master, don't bury the student me......" Jiang Tian was a little shy.

However, Xu Hai didn't have time to talk to Jiang Tianla, and their task was heavy.

Although more than 30 people have been added, plus the original dozen people, this scale is the largest in any department of the Academy of Sciences.

However, they need to be responsible for the most projects, the first project, of course, Jiang Tian is in charge of the improvement of the steering system, as well as the research of the brake system, in addition, but also to study the equipment for road rollers, equipment for ploughing, excavation equipment and so on.

On average, a project can only invest seven or eight people at most, if they are all veterans, forget it, except for the dozen or so apprentices who followed Jiang Tian have some experience, and those who followed Xu Hai, more than 30 people are all apprentices, even if they have experience, their experience is also in boilers or other aspects, in terms of trucks, there is no experience to talk about at all, everything has to start from scratch, the pressure is so great, it is unimaginable.

"How's your research going?" Xu Hai directly asked about the progress.

"There is basically no problem with the steering system, it feels about a third lighter than before, and it feels like there is not much room for change, and the brake system is being studied, and there are some eyebrows, but it is estimated that it will take a few months to study it at the earliest." Jiang Tian talked about his progress.

The steering system may seem difficult, but without demanding high standards, everything is easy to solve, and it is not difficult.

Jiang Tian uses leverage to solve the problem, that is, to increase the number of rotations of the steering wheel and use the distance to reduce resistance.

This point was inspired by the ship's rudder, but due to the size of the space, this lever should not be set too long, otherwise it would be unfavorable for handling, and Jiang Tian controlled this distance to only need to turn the steering wheel one and a half times to achieve the effect of one and a half turns of the steering wheel.

And this accounting, in fact, this is more difficult, but in the actual operation is not the case, plus the car in the process of exercising, the steering wheel rotation resistance will also be reduced.

In addition, the gear is filled with some oil to lubricate to reduce some friction.

However, this oil is more embarrassing, Jiang Tian has tried animal fat, vegetable fat, and even mixed oil, although it can be reduced, but the effect is not particularly ideal, and it is easy to leak oil, so the next thing is to find a way to solve this problem.

"Okay, let's assign the work first, and then you still focus on the research of the brake system, and you divide two people to me, let them take these apprentices I brought, respectively, to carry out the research of the ploughing truck and the road roller in the early stage, we must speed up, the ploughing car is not in a hurry, even if it can be taken out now, it will not be able to catch up this year, and strive to build a few road rollers in October, and the imperial court will start to build roads after the year, and this road roller is the key." Xu Hai said about their respective tasks.

Whether it is a plough truck or a road roller, these are all things that need to be braked, and even trains need to be braked.

Therefore, the braking system that Jiang Tian is studying is crucial.

It's a pity that Xu Hai doesn't understand this aspect, otherwise, he would be more willing to help his own students.

"These two students have been arranged, and there has been some preliminary progress, and the rest are some bottleneck problems, master, you can take them for public relations first." Jiang Tian said that he had received the task a month earlier, and he had also assigned two apprentices to study it.

Jiang Tian took some time out of his busy schedule and took other apprentices to give advice and give advice.

In fact, these two things are not complicated.

Looking at Xu Hai's somewhat surprised eyes, Jiang Tian smiled slightly, he knew that his teacher was a little surprised, and hurriedly stretched out his hand and said, "Master, please come with the students!" ”

Following Jiang Tian's footsteps, Xu Hai came to the place where the drawings were designed, and saw two students directing the carpenter to fiddle with two models of different shapes.

And when he saw these models, Xu Hai's eyes were also bright.

But after all, he is not professional, he has only heard of these two things, but he has not really seen them, and he doesn't know how to get them.

But after looking at the model in front of him, he instantly had a picture in his mind.

"Master, this is the original version, the steam car is responsible for providing pulling force in the front, replacing the cow and horse, and the back is supported by people, just like the normal ploughing of the ground, and the power of the steam car is large, so the speed of ploughing actually depends on how fast the person who controls the pear knife behind can walk.

But the students felt that there were some flaws in this solution, and since they used machinery, why not use all of them? Why not just one driver do the work?

Then there is the latter version, which connects the pear knife with the body, and when driving, the driver can control the high and low position of the pear knife through this control lever, and at the same time, considering the versatility, so a hole is reserved here, as well as this flat knife at the back.

The only problem now is that the lever is too heavy, and the driver can't maneuver the lever while controlling the direction, so a better way to solve this problem has to be found. ”

As early as when Yuan Rang plough appeared, the leveling knife came out, using dozens of knives to install on the rollers, and then using oxen or horses to move forward, as the movement, the rollers rotated, driving the knives to break the dirt.

Because its own speed is not enough, it is impossible to level the ground in one trip, and it takes several more times to do it, but even so, it is much faster than going to the ground by hand.

Now, the steam engine is used to provide power, to put it bluntly, the rear rollers are used as the rear wheels of the truck, in addition to the steam car in front, the back also provides some power separately, so that the rollers can rotate faster, and the dirt can be broken without moving.

In the test, the effect was so good that it exploded, but the problem was still that, a joystick, controlled by one person, was too heavy.

These two inventions are not actually inventions, they are both improvements based on existing things, or in other words, two seemingly different things are assembled, and then this effect is achieved.

"This is a roller, in fact, it is very simple, a steel drum is installed in front, no solid one is required, enough space is reserved in the front, the steam engine is installed in the rear, and the steering system is also installed in the rear, because of its own volume, plus weight, there should be no problem with the roller." Jiang Tian continued to introduce the roller.

For him, who already has a truck, the roller is really not difficult, it is nothing more than a change in the front wheels and a change in the layout of the equipment.

The drum is not easy to install? Wouldn't there be room to raise the body and hollow out the lower half of the front? And there is no need to be in charge of steering in front, so everything can be welded directly, and it can be steered through the rear wheels, and in this way, the steering is easier than that of a truck, and the steam engine is closer to the position of the transmission wheel, so the steam engine of the same specification is installed on it with stronger power.

"So, now Lao Tzu's task is to solve the problem of the joystick that controls the lift?" For a while, Xu Hai was a little unacceptable, in his opinion, these are big problems, and it is difficult to solve them on time.

But when I got here, I found that everything was a floating cloud, and the only thing that was not solved was the problem of the brakes and the lifting control lever.

The brake does need to be solved, lifting the control lever, to be honest, even if this problem is not solved, it can still be used at that time, the big deal is to arrange one more person in front of the person to be responsible for the operation, this is not a big deal at all, Jiang Tian just wants to be more perfect, that's all.

Jiang Tian scratched his head a little embarrassed, nodded and said: "Basically, if the problem of the lifting rod is solved, the problem of the excavator will not be big, and you can even make a bulldozer out, so that it will be more convenient during construction, the premise is to solve the problem of the lifting rod......"