Otaku Engineer in Great Tang Dynasty

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Li House, West Courtyard.

Li Zexuan rolled up the drawing, handed it to Yan Shaoning, and said, "Brother Shaoning, I understand your drawing method, but I still think my method is more concise and clear."

"Oh? Then, Xiaoxuan, please tell me about your drawing method."

Seeing that Li Zexuan was very confident in his drawing method, Yan Shaoning couldn't help but want to know how amazing this method is.

"Brother, this picture shows a three-view and isometric view of a component. The so-called three-view is to draw the outline of the object from the front, side and top of the object, such as this stone, Shaoning brother, you From the front..."

Li Zexuan picked up a stone for reference, and explained the three-view drawing method to Yan Shaoning. After a while, he packaged and gave Yan Shaoning the part that the professional teacher told him.

"...Brother Shaoning, look, with these three views, the craftsman can form a model of the parts to be made in his mind at a glance, and it will be easier to mark the dimensions on the three views."

After listening to Li Zexuan's explanation, Yan Shaoning stood up, paced, frowned for a moment, and suddenly exclaimed: "Wonderful, wonderful, this drawing method is really wonderful, Xiaoxuan, you are a genius, you draw like this It does seem to be more clear, and there are a lot of unnecessary labels."

Yan Shaoning sat down again, rubbed his hands, stared at Li Zexuan and said excitedly: "I must tell my father about this drawing method and let him popularize this method, Xiaoxuan, are you willing to serve as a prisoner? If Dad knew of your talent, he would definitely be willing to ask for a half-official position for you in front of Your Majesty."

Li Zexuan shook his head and said, "Thank you brother Shaoning for your kindness. My brother left home for many years and just came back a few days ago, and he doesn't want to be an official now."

To be a supervisor is almost equivalent to the Chinese Academy of Sciences in his previous life, and he would not want to let Li Zexuan work there every day to do research there. Moreover, he has a lot of things to do recently. The Trolley Pavilion is about to open, and the locust eradication plan will start in two days.

Hearing Li Zexuan's rejection, Yan Shaoning sighed: "Oh, that's such a pity."

Turning his eyes to the blueprint again, Yan Shaoning wondered, "Xiaoxuan, what does this isometric view do?"

"This view is mainly to help craftsmen form the three-dimensional model of the object in their minds, because some objects with particularly complex structures, it is difficult to imagine its three-dimensional model with only three views."

Yan Shaoning nodded thoughtfully.

At this time, Li Zexuan smiled meaningfully: "Brother Shaoning, you just noticed this drawing method, but you ignored the picture itself."

"Oh? Could it be that there is some mystery here? Don't talk about it, let me see."

Yan Shaoning re-examined the drawing according to the three-view principle that Li Zexuan just explained to him. After reading it, Yan Shaoning stood up, closed his eyes, and imagined a three-dimensional picture of this thing in his mind.

After a while, Yan Shaoning opened his eyes and said excitedly: "I understand what this is, Xiaoxuan, what are you going to do with this thing?" Although he could imagine the three-dimensional model of this thing, he couldn't think of it for a while. use.

Li Zexuan smiled and said, "I named this thing a ball bearing. Brother Shaoning, what do you think would happen if this thing were used in the transmission connection between the wheel and the wheel axle?"

Yan Shaoning himself has done a lot of research on mechanical design. After listening to Li Zexuan, he immediately understood that he was more excited than before.

"It's amazing. This is a genius design. With this ball bearing, then all vehicles, whether they are horse carriages or trucks, will have minimal resistance to moving forward. Xiaoxuan, how did you come up with this? This The invention is really great."

Li Chengqian didn't understand machinery, and he hadn't said a word before. When he saw that Yan Shaoning was about to blow this thing into the sky, he couldn't help but wonder: "Shaoning, is this thing really that good?"

Yan Shaoning was extremely excited at the moment. Hearing the prince's question, he affirmed without thinking:

"Of course, it's no exaggeration to call this the most useful invention of my Tang Dynasty. Your Royal Highness, you don't know, if all the cars of my Tang Dynasty use this ball bearing as the transmission, then the same horse can be driven once. At least pull more than 50% of the weight of the car.

At that time, merchants can transport more goods at a time, and a grain truck can carry more grain and grass during wars. Besides trucks, other machinery that needs to be driven can also use these ball bearings. Your Highness, you It is not important to say that this invention is important. "

Hearing Yan Shaoning's analysis, Li Chengqian was also stunned. He didn't care whether the merchants could transport more goods, but it was really crucial to improve the efficiency of the battle formation. In this era, one of the decisive factors for the outcome of wars Or the food issue.

At this time, Li Chengqian realized that Yan Shaoning's previous praise was not excessive at all, and he was also a little excited now.

"Brother Zexuan, this matter is very important, I wonder if I can let Gu take it back to the palace?"

Li Chengqian also knows that Li Tai is competing with him recently, but he has no other way to act like Li Tai in front of Li's eldest grandson, right? If he dared to do this, he would definitely be reprimanded by Li Er for saying that he did not have the prestige of a prince of a country.

There are some things that Li Tai can do, but he can't because he is the prince. Seeing that Li Er was more and more fond of Li Tai, Li Chengqian was also anxious, but he could only be anxious.

At this time, seeing that this thing invented by Li Zexuan was so useful, it could even be used in the military, Li Chengqian first thought that maybe he could use this thing to make Li Er admire him, and follow

You can also ask for something for Li Zexuan.

Li Zexuan is a little helpless at the moment, although the use of this ball bearing is indeed extremely wide, these two people are not so excited, right? Listening to Li Chengqian's intention to present the blueprint to Li Er immediately, Li Zexuan said quickly:

"His Royal Highness, this ball bearing is indeed very useful, but I don't know whether it can be made or not. I am afraid that it is too hasty to present the blueprint to Your Majesty."

When Li Chengqian heard it, he also felt that it was reasonable, but secretly thought that he was still too reckless.

"Brother Zexuan said it is very true, then after you and Shaoning build this thing and install it on the car, I will report it to the father and emperor, and then I will give the two of you credit."

As soon as Yan Shaoning heard Li Zexuan's words, he began to frown and contemplate. He was a little too excited just now, and he never thought about whether this thing could be made. He thought about it for a while and hesitated:

"Xiao Xuan, I'm afraid it's very difficult to make this ball bearing."

When Li Zexuan proposed this ball bearing, he didn't know whether it could be manufactured with the craftsmanship of the Tang Dynasty. Although he was mentally prepared, he was still a little disappointed when he heard Yan Shaoning's negative answer, but he also wanted to Knowing where the technical difficulties are, I asked:

"Brother Shaoning, I don't know where there will be difficulties?"

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