Because after Du Shi summoned his father, he was called "Du Mu"!

At that time, the status of Nanyang was like the Pearl River Delta, Beijing-Tianjin-Tangzhou, and Yangtze River Delta in later generations, and it was the largest city in the country.

Later, there was a saying that the parent official was used to refer to the pro-people official.

Because there are "White River" and "Tang River" running through the whole territory in Nanyang, such hydraulic facilities are all over the place.

In the middle of the Qianlong period, he ordered the demolition of the Nanyang water conservancy facilities, which led to a decrease in the flow of the river, and then the water drainage mill, which had been used for more than 1,700 years, gradually disappeared.

(Water mill: There is also a large water mill disc with a diameter of nearly three meters in my hometown, and according to the older generation, there is a water mill every few tens of miles.) ）

Li Tingran frowned: "In the past, there was a rebellion, and the water mill was almost completely destroyed, I heard that the Jiang family repaired a few of them, and I don't know if it's true or not?" ”

He was too busy for a while, and he didn't have time to check on the affairs of the Jiang family.

The words of the two made Zhu Cijiong's eyes light up.

He was going to have to take some time to draw the structure of the hydraulic machine!

How do you know that there are already hydraulic machinery at this time!

Zhang Siyuan said eagerly to Zhu Cijiong: "Your Majesty, I suddenly thought just now that if the method of using water power from Du Shishui is used as the driving force of this platform, wouldn't it be much more powerful than manpower?" ”

It turns out that my brother-in-law wants to use the water drain here!

Li Tingran was overjoyed and echoed: "Your Majesty, what Mr. Zhang said is reasonable, the white water outside Nanyang City continues to flow all year round, if it is like the water mill, slightly change the Du Shi water drain, then these machines should be able to use half less manpower!" ”

This is a great thing to reduce manpower and increase speed!

……

Ancient books record that in the Han Dynasty, Nanyang was a big iron-smelting city, and for every stone of refined iron that was made, the animal power used would eat 800 stone of grain.

When the Dushi water drain was put into use, it not only saved animal power, but also increased the efficiency by three times!

……

Ding Da Niu understood.

Although he had never seen a water drain, the water mill did.

In this water mill, the speed of grinding flour is several times higher than that of small animal grinding!

He was overjoyed and said, "What the two Shangguan said is, why did I forget to use water power instead of manpower!" ”

"Replacing manpower with water is indeed a clever hand!" Zhu Cijiong asked for a pen and paper, and drew out Du Shishui's rough outline with a few brushstrokes.

He once saw the propaganda poster of Du Shishui Pai in Nanyang, and because he was interested, he took a few more looks.

It's like an enlarged axle, with one wheel in the water and one wheel in mid-air driving the crankshaft, which in turn is connected to a straight shaft.

With the rotation of the water wheel, the straight shaft keeps rushing forward against the skin and pulling back out...... In this way, I kept doing a simple reciprocating two-stroke movement.

……

"Look, this is the structural diagram of Du Shi's water drain!"

Zhu Cijiong showed the drawings to everyone to see, and he leaned over another piece of paper and drew the improved version.

"I think that if the horizontal water wheel is changed to a solid one, and then the upper wheel is canceled, a single-wheel structure is adopted, and the crankshaft is connected in an eccentric position."

Zhu Cijiong pointed to the new drawings he had drawn and said: "In this way, because the weight is reduced, the power of the crankshaft is greater.

In addition, the wheel can be enlarged in case the water level drops during the dry season. ”

Ding Da Niu said strangely: "Isn't this a waterwheel?" ”

"Yes!" Zhu Cijiong smiled and said: "That's how the waterwheel lifts water!" ”

"Moreover, if the shore is not suitable for building a workshop, we can use a waterwheel to extract the water to a high place, and then use the force of falling water to drive another water wheel to operate, so as to use it as power!"

Zhu Cijiong drew a few gadgets on the paper: "This thing is called a bearing, which is used to reduce the wear of the shaft socket and transmit power with maximum efficiency."

It is divided into two parts, the mother and the mother, and the mother nest is fixed on the axis of the outer wheel; The inner axis is slightly smaller and is responsible for connecting the main body.

Fill a ball or cylinder between the two bearings, and on the outside are two covers that are a little smaller than the inner diameter of the socket to prevent the balls and balls from overflowing......"

"Your Majesty, this is a rolling design to reduce the wear and tear of the spindle?"

Ding Daniu saw Zhu Cijiong's purpose at a glance.

"Yes!" Zhu Cijiong smiled and nodded.

Zhao Donkey, who was standing on the side, said coldly: "Isn't this available on the axle!" ”

Zhu Cijiong looked at this stupid big man in surprise.

The words of honest people are all truths!

Ding Daniu didn't blame Zhao Donkey for making trouble for this rice bucket for him again, but rubbed his chin:

"You need a trolley over there. It is said that His Majesty intended to set the Furlong frame on the trolley, so that it can be transferred lightly, but I think that this bearing should be made one step ahead of the water drain! ”

His Majesty's soldiers have begun to move, and the Battle of Yuzhou is approaching......

There are many mountains and hills over there, if this bearing is made and put on the gun carriage, this is the support for Your Majesty!

Li Tingran took a closer look: "I'm afraid that this bearing will use 100 forged steel!" ”

"It's easy!" Ding Da Niu was very excited, and he patted the machine with the shape of the barrel of the car next to him:

"With this, you only need to change the clip, a day, hundreds of bearings in the car, it's still easy!"

There is a master master in the workshop who specializes in making 100 forged steel, and this thing is ready-made!

They just need to determine the size of the form, find the most suitable proportion, and start manufacturing.

"Good!" Zhu Cijiong said in a deep voice: "You will assist the artillery workshop more, as long as you do it well, I will not hesitate to reward!" ”

"Don't dare, don't dare to ask for Your Majesty's reward! The minister has a non-point invitation...... Ding Da Niu rubbed his hands, and he said with hope on his face: "Your Majesty, the second day of the second month of the first month of the new year is a day of great joy for children, can Your Majesty give a word to the villain?" ”

When he arrived in Laohugou at the beginning of last year, he signed a contract to sell himself with a certain heart of death, just to ask for a daughter-in-law for his son.

Who knew that his daughter-in-law hadn't said it yet, and he received a big red envelope of twenty taels at the end of the year.

Ding Da Niu immediately made a decision and gave his son a talented daughter who was knowledgeable.

It's just that although he can earn fifty taels of silver a year, if you count the reward, it is even more astronomical.

His son Ding Shugen is also working in the craftsman's workshop, and the money earned by the father and son in a year can be worth the money that Xiucai earns from teaching all his life.

However, in his bones, he was still looked down upon by his father-in-law, thinking that he was a clay leg, and his daughter had no interest in following such a craftsman.

Yes, Ding Daniu wanted to use the reward to exchange for a pair of Zhu Cijiong's words.