Datang Longya

Chapter 83 Bearings
Li Shimin's skill is very natural, just a rollover, he climbed over the fence.

The geese took advantage of the victory to pursue, and even stretched their necks out of the gap in the fence and yelled "quack" at Li Shimin.

Li Shimin glanced at the group of geese with lingering fear. If he hadn't known that the group of geese could not withstand his fists, he would have swept past them.

These damned geese!Be careful that I will destroy your nine clans!

Li Chengqian wanted to laugh looking at his father's distressed appearance, but he held it back.

The father makes a fool of himself, and the son laughs at him.This is unfilial behavior.

The farmer grinned loudly: "Haha, I forgot to tell you that these geese recognize strangers. It's okay. After you feed them for a few more days, they won't bite you."

Li Shimin said angrily: "Wait...when I get home, I must stew a goose!"

……

Near Tianxia Manor, there is only one small river with fast flowing water, which can be used as a source of water power supply.

Leng Feng walked to the river and found that many carpenters were sawing wood and making planks, and Li Ke was in charge of the craftsmen.

A huge water wheel has been erected beside the small river. As early as the period of Emperor Hanling, there had been a "rollover" to draw water.But this waterwheel is not just for pumping water.

The river is fast and the waterwheel is wide enough, so the waterwheel turns very fast.

Li Tai and Yan Liben squatted on the bank, staring at the waterwheel in a daze.Ever since he received the medical report and completely dumped the general supervisor to Yan Lide, Yan Liben has been completely free, following Li Tai all day long, learning new knowledge such as the "Leverage Law" from Li Tai.

Leng Feng walked up to the two of them and knelt down, asking, "What are you two doing?"

Li Tai saw that the master was here, so he regained his energy immediately, hugged Leng Feng's arm and asked, "Master, it's a coincidence that you came, please help us to see, our waterwheel bearings can't bear the high-speed rotation of the waterwheel." pressure."

"bush?"

Leng Feng was confused, what is a bearing bush?
There is a wooden bridge from the shore to the waterwheel, Leng Feng walked over and looked at the waterwheel.

Datang's carpentry skills are still good, and the whole waterwheel is quite up to standard, but...why is there a weird ceramic thing where the bearing should be?
"The bearing bush you mentioned...couldn't be this rotten thing!"

As soon as Leng Feng pointed at the axis of the waterwheel, he heard a click, and the waterwheel that was rotating at high speed immediately slowed down and made a creaking sound.

Li Tai said, "That's it, that's it."

Yan Liben called the craftsmen to come over, and it took a lot of effort to remove the bearing bush of the waterwheel.

Leng Feng felt helpless looking at this strange thing. Is this an ancient bearing?
Yan Liben pointed to the broken bearing bush and said: "The water flow is so fast that the bearing bush can't bear the continuous pressure. Either the wooden shaft will be damaged by friction, or the bearing bush will be broken. It is very difficult to use it as the power of the hydraulic water delivery channel!"

Leng Feng knocked on the bearing bush and asked, "Haven't you ever thought about replacing the center shaft of the waterwheel and this bearing bush with iron?"

Li Tai said with a bitter face: "Think about it! But, it's still the same, the friction between iron and iron is more intense."

Yan Liben said with emotion: "This is an unsolvable problem! Wei Wang, we have experimented many times, and we are planning to ask you for help!"

Datang's blacksmith technology has not reached the point of manufacturing ball bearings, but cylindrical roller bearings can still be made. (Ball bearings are bearings with iron balls in the middle, and cylindrical roller bearings are bearings with metal cylinders between the two layers. I just know that bearings are divided by numbers, such as 6203 or 30207. I checked the scientific name...)
Taking the two of them to Jingleisi, Tiesheng's craftsmanship is very exquisite, and it is estimated that it is not difficult to make a cylindrical roller bearing.

Leng Feng drew a picture, explained it to Tie Sheng, and asked worriedly, "Can it be done?"

Tie Sheng thought carefully for a while before saying, "It can be done! But... can it be made larger? It will be easier if it is larger, and I can make it soon."

Leng Feng thought about the appearance of a bearing with a diameter of [-] centimeters, it should be no problem!

Yan Liben said impatiently: "The fire was lit while you were talking! How to do it is up to you!"

Yan Liben had always been the worst-tempered when he was serving as the general supervisor, so Tie Sheng didn't dare to delay, so he started to make it immediately.

Yan Liben took the blueprint and said to Leng Feng: "Lord, I saw your design drawing and thought about what the finished product will look like. It is indeed very durable, but even this thing called a bearing may only last for a year."

Leng Feng said impatiently: "Won't you put some lubricating oil on it again! With lubricating oil, no matter what, it can last for another year."

"Lubricating oil? What is lubricating oil?" Both Yan Liben and Li Tai looked at Leng Feng with confused eyes.

"..."

"Petroleum is fine, and oil is fine too!"

Yan Liben slapped his head suddenly: "Are you talking about Shiqi?"

"Stone paint?" Leng Feng said, "Is it the kind that is dark and can be ignited?"

Yan Liben said: "According to the "Hanshu·Geography" written by Ban Gu in the Eastern Han Dynasty, "Gaonu County in Shangjun has water, and the fertilizer is combustible."

Jin Zhanghua pointed out in "Natural History": "Water and fertilizer are also there, not only the water in Gaonu County".

Li Daoyuan of the Northern Wei Dynasty also quoted "Natural History" in Volume [-] of "Shui Jing Zhu" and said: "In the container, it starts to yellow and then turns black, like a gelatinous ointment, but it is very bright (burning) and is no different from an ointment."Plaster carts and water pipes are very good, and local people call them stone paint'.

Is that what you're talking about? "

I hate the ancients quoting the classics the most. Leng Feng's classical Chinese is very poor, and he can only roughly understand the meaning.But according to "black", "combustible", and "like ointment", it should be oil!
"That's right, it's this thing. Although it hasn't been refined, it can also be used as lubricating oil. Apply it to the center shaft and bearings to reduce frictional resistance and prevent rust."

Yan Liben was overjoyed: "Army Supervision has this thing. They are studying how to use stone paint instead of kerosene. They have a lot of stock. If you can ask His Majesty to order it, just ask for a barrel!"

Speaking of "Your Majesty", Leng Feng remembered that Li Shimin wanted to see his two young sons, so he asked Li Tai to ask Li Ke to go to the chicken farm to find his emperor's father, and by the way, asked for a bucket of stone paint.

After leaving Li Tai, Leng Feng and Yan Liben waited for Tiesheng to make the bearing together.

It was near dusk that Tiesheng produced a bearing that met the standard.

Leng Feng found a wooden stick from the side, asked Yan Liben to cut it to fit, and put it in the middle of the bearing.

Yan Liben pressed the outer ring and turned it vigorously!
Whoosh!
The bearings slid quickly.

Yan Liben was obsessed with watching the bearings rotate as if he saw a beautiful woman. He couldn't help but said: "This thing can be applied to many places. With it, the included angle of the printing machine will not have to worry about wear and tear, and it can also speed up the printing speed!"

(End of this chapter)