Chen Nian made an appointment with Wang Jiancheng to meet in the discussion area of the library. When he arrived, he found that Wang Jiancheng was already discussing with Qiu Mai.
He did not go over to disturb them, but stood quietly behind them, listening to their discussion.
".So the most important thing for the excavator he wants is its all-terrain capability. At the same time, the size should not be too large."
"We must ensure that it still maintains basic functional integrity, safety and reliability within an extremely narrow operating range, while also taking into account efficiency."
"This is not a simple requirement. No wonder it is not available in China now."
"Look at the sketch I drew, to achieve the functionality he mentioned, it's impossible to just modify the chassis like you said."
"The entire machine needs to be rearranged, including the cab, engine compartment, transmission, etc."
"The core technical difficulties are not only hydraulics and transmission, but also system engineering design."
The speaker was Qiu Mai. She had a sketch drawn with pencil in her hand. Chen Nian glanced at it and found that the sketch was very similar to the all-terrain excavators he had seen in later generations.
Of course, there is an essential difference between "concept drawings" and "drawings". It does not mean that things can be built with simple drawings.
But even so, Qiu Mai has fully demonstrated her strength.
Just like when I drew the blueprint of the F-22
Wang Jiancheng, who was sitting next to Qiu Mai, looked at the drawings and said:
"What you said is right, but there should be a way to solve it, right?"
"For example, the hydraulic system problem you mentioned, in fact, the complexity of the design of the hydraulic system of the all-terrain engine has not increased much."
“It’s gone up a lot!”
Qiu Mai interrupted him decisively, and then explained:
"You think it hasn't risen much, that's because I didn't mark the hydraulic device required for the positioning system."
"To put it bluntly, if you want to use this excavator in the mountains, how to make it firmly nailed to the rock wall and the mountain road is the problem."
"Is it possible that you have to build a rope and have the positioning stakes manually smashed in every time it is moved?"
“So, it’s important to have a fixed system.”
"According to the current general design, we either use positioning piles or hook-type positioning modules. No matter which one is used, a huge amount of hydraulic system design is involved."
"Even each bending joint requires a separate set of hydraulic equipment. The operating logic and performance requirements of each set of equipment are different. How can it be that simple?"
After hearing Qiu Mai's words, Wang Jiancheng sighed slightly disappointedly.
Then, he turned his attention to another key word marked on the paper, transmission system.
"What about the transmission system? Is this difficult?"
".I don't know how to put it. If we have high requirements, we need to use high-power AC servo motors and apply them to hydraulic presses."
"The purpose of this is to replace the structure of ordinary induction asynchronous motors, simplify the hydraulic system structure of the hydraulic press, save energy and improve performance."
“This is the basis for the miniaturization of this all-terrain excavator.”
"Of course, we can also maintain the original asynchronous motor design, but in that case, we must start from other aspects to reduce the size of the entire excavator."
"As you just said, our goal is to reduce the size to less than 4X4. This is a mini excavator, so it is difficult anyway."
"It doesn't have to be so much in volume. What I consider mainly is the small construction area. If there are other ways to overcome this problem, then the volume is not uncompromising."
"Isn't the problem just that there is no other way?"
Chen Nian listened to their discussion with great interest and sighed secretly:
Sure enough, the world of academic masters is different from that of most ordinary people.
Although the two people in front of me have certain backgrounds, none of them have serious experience with excavators.
Just relying on this limited information, we can actually draw so many conclusions that can be said to be completely correct. It is really amazing.
However, it is still a bit too whimsical for the two of them to design the required all-terrain excavator.
You have to do it yourself!
Chen Nian patted Wang Jiancheng on the shoulder. The latter looked back and immediately gave up his seat, motioning for Chen Nian to sit down.
"Senior, we haven't discussed it for long, do you want me to tell you what I said before?"
Chen Nian shook his head and replied:
"No need, I just listened for a while and I basically understand it."
"So now, the difficulties you have sorted out are mainly concentrated in the three parts of positioning system, hydraulic and transmission, and electronic control, right?"
Qiu Mai nodded, rubbing his head and said:
"To be honest, we are just trying our best to discuss this now. It is still very difficult to achieve any results."
"After all, we can't solve the servo motor problem."
"What if it can be done?"
Chen Nian asked.
"Ah? Can it be done? How can it be done?"
Qiu Mai subconsciously repeated Chen Nian's words, with some doubt in his tone.
".I'm just giving you an example. Have you ever thought about solving this problem yourself?"
Chen Nian looked at Qiu Mai with some expectation.
In fact, from his point of view, for Qiu Mai to participate in the main work of the Yishan project but only be a marginal handyman, it is better to be fully responsible for the design of a small equipment as he is now.
Although it may not be as amazing in terms of scale and not as conspicuous in terms of personal resume, it is definitely not worse than participating in the main work, whether it is the training of one's own abilities or the "meaning" of the project itself.
Qiu Mai obviously knew this too.
So he wanted to know what Qiu Mai would choose.
After hesitating for a moment, Qiu Mai answered:
"I want to solve it, but the problem is, I don't know if I'm capable enough."
"My main concern is that if I really start this project, if there is no result in the end, won't I let other people's hopes be dashed?"
"After all, this is not a scientific research project, this is a..."
"Firefighting Project."
Chen Nian added.
"That's right, it's a fire-fighting project. I'm afraid we don't have enough capabilities to put out the fire."
"Try it."
Chen Nian couldn't help but come to a conclusion. Then, he took the sketch drawn by Qiu Mai and said:
"Then let's start from the most basic part, let's talk about the power system first."
In the next few hours, Qiu Mai felt as if he had entered a new realm.
She never imagined that the R&D and design process could be so simple.
In most cases, Chen Nian has already given key tips as soon as a question is raised, and then uses his existing knowledge to quickly improve it.
Wang Jiancheng was not idle either. While summarizing and recording the discussion between the two, he also made several corrective suggestions from time to time to eliminate any contradictions or conflicts in the design he proposed.
Under such a division of labor, the efficiency of discussions is astonishingly high.
Even before the library closed, they had solved problems with two major systems in the excavator.
Of course, the way to solve the problem does not mean that it has actually been built, or that there are drawings, or that it can be put into production online, but that it has established a correct, standard and absolutely usable idea.
Even if there are corrections later, the magnitude will not be too big!
Is this really the correct way to open a project?
She could clearly feel that if she were a driver, every previous project would have been in the dark on a winding mountain road where she could not see her fingers.
My limited knowledge system is like the car lights that guide the way. Even if there are any, they can only illuminate a narrow area in front of me.
But Chen Nian's presence is like the reflective road signs on both sides of the highway, directly outlining the entire road.
And more importantly, the light reflected by the road sign is not the light emitted by it itself, but from the headlights of its own "car".
In other words, Chen Nian has never once guided in a way that transcends his own knowledge system.
What kind of monster is this?
Even with my mentor, I have never had such an experience.
Being able to achieve this step can only explain one problem, and that is:
Chen Nian's overall knowledge structure, including experience, has already achieved a crushing lead over himself.
She looked at the young man of her own age in front of her with sharp eyes, and for a moment she didn't know what to say.
On the other hand, Wang Jiancheng, as soon as he saw the results, started to praise them for free.
"Damn it. Senior, is there anything else you don't know how to do?"
"Forget it about building airplanes. You can also do AI. Now you can even do excavators?"
"What does my mother say now? Can we give this directly to Sanyang Factory?"
After hearing his words, Chen Nian shook his head and replied:
"How could the Sanyang Factory understand that it would first hand it over to the Mechanical and Electrical Institute, ask them to come up with complete design drawings, and then hand it over to the machinery factory below for processing."
"I'm not sure if your Sanyang factory has enough processing capacity, but if it doesn't work, you can let XCMG come over."
"No matter what, let's give it to them to try first."
Rather than directly handing over the technology and design to XCMG, the company asked the Mechanical and Electrical Institute to output the output and then give it to the Sanyang Factory. The reason for making this decision was that Chen Nian actually had his own considerations.
That is, if all technologies are concentrated in large enterprises like XCMG, the vitality of the sinking market will be seriously damaged.
It is even possible that those township and village enterprises and small private enterprises will collapse due to the so-called "technological suffocation".
Especially under the premise that he has determined that he will trigger a financial crisis in advance.
Therefore, the "technical sinking" of non-key modules is an inevitable path.
Even if they don't do that well, as long as they do it, there is hope.
After confirming the follow-up plan, the three of them left the library together and went to have a late-night snack outside the school.
Throughout the whole night, Qiu Mai's eyes never left Chen Nian, and it even made Chen Nian feel a little scared.
But throughout, their conversation never strayed from what they were doing.
That is, an excavator.
From the perspective of a passerby, this is indeed an extremely weird phenomenon.
Two boys and girls in their prime were sitting together. The girl's eyes were clearly filled with affection and she was still eager to talk, but they were discussing various mechanical principles that no one could understand.
Is this some new-age way of ambiguity?
But if you look at it from the perspective of someone who has experienced it personally, such as Chen Nian, he actually understands one thing very clearly.
That is, it is not himself who makes Qiu Mai fall in love, but the excavator
When she looked at herself, she might have seen an all-terrain excavator with a strong and powerful arm, a wide and far-reaching bucket, four steadfast positioning axes, and two indomitable tracks.
A few days later, under Chen Nian's comprehensive guidance, Qiu Mai successfully completed the design of the first version of the all-terrain excavator.
Subsequently, her design was submitted to the Institute of Mechanical and Electrical Engineering. After optimization, archiving and filing by the Institute of Mechanical and Electrical Engineering, it was finally distributed to the Changshun County Party Committee.
At this time, due to the full launch of the Mountain Removal Project, the name of the Office of Civil Development has begun to become a bit scary.
Therefore, as soon as the order was received, the county party committee assigned Wang Limin and Wang Qing to go to Sanyang Machinery Factory.
Liu Maocai did not receive the news. When he saw the two of them, he still showed an attitude of impatience and helplessness.
"You two, you really don't have to come to me. I really can't help it."
"If you come to me again, then I will have to go to Secretary Chen."
"Don't worry, I'm not going to complain, I just want to clarify the situation."
"Otherwise, how long will we have to worry about this trip?"
"Director Liu, you can definitely do it this time."
Wang Qing interrupted him with a smile on his face.
"What do you mean it will definitely work? I've already said it. This is not something you can take for granted. We don't have the technology!"
"And what if you had?"
As he spoke, Wang Limin took a step forward at the right time and took over the words:
"Director Liu, you haven't received the notification yet, but I estimate that the State-owned Assets Supervision and Administration Commission will contact you soon."
"Your factory has been selected and included in the Yishan large-scale construction machinery development project, and is responsible for the research and development of all-terrain excavators."
"At the same time, the corresponding technical documents have been prepared and will be issued after final confirmation."
"You don't have to worry about technical problems anymore. Someone has solved them for you - your factory just needs to make good use of the technology."
Liu Maocai opened his mouth in shock.
He could understand every word Wang Limin said, but when they were put together, he was completely confused.
what's the situation?
Mountain-moving project?
The one that made the evening news and took up a full two minutes?
How could a run-down state-owned machinery factory in a remote area be suddenly selected?
Moreover, there are actually people who provide technology
How big of a pie would this hit on my head?
His eyes turned to Wang Qing.
At this moment, he suddenly felt that this man was a bit mysterious.
At this time, Wang Qing had exactly the same idea as him. He also felt that his cousin, Wang Jiancheng, was somewhat mysterious.
Of course, as far away as NPU, Wang Jiancheng's attitude toward Chen Nian was the same.
