I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

Gong Shucan immediately said: "Your Highness, please take a look."

Liu Tan followed him and found two wrench-like objects next to the plow. He was sure that these two objects were not on his drawings, but he didn't see them after looking around just now.

Gong Shucan said: "There is a winch inside the handle. Turn the handle in a fixed direction, and the plow body below will be lifted."

He turned it vigorously while talking, and Liu Tan noticed that the plow body was lifted up from the soil little by little with his movements, and finally completely detached from the soil.

Then he saw Gongshucan pull out a wooden stick from below. This wooden stick was also hidden in the plow frame before. If it weren't for the pull ring outside, it would be impossible to tell that there was another wooden stick here.

The role of this wooden stick is to fix the handle so that the handle will not be reversed due to the operator letting go, causing the plow body to fall again.

This fixed method is very primitive, but it works well.

After letting go, Gong Shucan said to Liu Tan, "Your Highness, please follow me."

Liu Tan followed Gong Shucan to the other side of the plow, where there was no handle but a ring.

Gong Shucan stretched out his hand to hold the ring and pulled it out, and the ring came out suddenly, revealing the wooden stick with four long wooden boards inside, these four long wooden boards only occupied a small part of the area of ​​the wooden stick , and the rest are ordinary wooden sticks.

Gong Shuchan explained: "This is what controls the plow body. As long as it rotates in a certain direction, the plow body will also rotate."

He turned the ring slowly while explaining, and Liu Tan saw that the plow body below also began to rotate slowly. After turning in the completely opposite direction, Gong Shucan stopped, inserted the ring back again, and the plow body began to rotate. The orientation after rotation is maintained.

At this time, Liu Tan also understood that those long wooden boards just fit the bayonet inside, maintaining the position of the ring after rotation, and at the same time maintaining the current direction of the plow body.

Gong Shucan walked over and put down the plow body again, and the rotation of the plow body was completed.

As for the traction frame, it is actually simpler than the plow body. The two traction woods of the main body do not need to be moved, and a rotating shaft can be installed at the connection part between the traction frame and the plow column. The same is true for other places, which is equivalent to using the plow column as the main body without move, the tongue flips back and forth horizontally on it.

The turning mechanism of the traction frame is very simple, what makes Liu Tan curious is how those two mechanisms operate the plow body?

In other words, he can understand the mechanism that lifts the plow body just now. It is nothing more than a rope tied inside, and the rope is fixed on the rotating rod. When needed, the rotating rod can be rotated. The principle is similar to that of a well.

But the plow body rotates, how do you control so many plow bodies to rotate at the same time?

Gong Shucan may have seen Liu Tan's confusion, and after glancing at his son, Gong Shu immediately went to fetch a sample they had remade before.

Gongshu was also dragging the tray, and Gongshuchan quickly dismantled the prototype, revealing the mechanism inside.

At this time, Liu Tan discovered that there is a wooden rod fixed on each plow body, and the wooden rod is connected to a vertical wooden rod through a rotating shaft, and the vertical wooden rod is passed through the rotating shaft. Connect another rope, and the other end of this rope is the ring that just manipulated the mechanism.

At this time, the two wooden poles and a rope are in a reverse Z shape, and when controlled by the ring, the rope is wrapped around the wooden pole inside the ring, gradually pulling the two wooden poles, and using this force to push the bottom one. The disc turns to get it where you want it.

And if you want to return to the original position, you only need to pull out the ring and turn it in the opposite direction.

The wooden poles inside the ring traverse the entire plow, and the ropes are fixed at the corresponding positions according to the intervals of the plow bodies, so that these plow bodies can be steered at the same time.

The reason is actually very simple, but Liu Tan still couldn't help laughing and said: "You have a good idea, why did you think of doing this?"

Gong Shucan thought for a while and said cautiously: "Actually... the minister did this for the sake of ordinary people."

After saying this, he felt a little apprehensive. His Royal Highness the King of the Northern Realm must have improved the plow for the common people. He said this as if denying the other party's approach, but he hadn't learned how to speak tactfully after so many years. After thinking about it, he simply said it.

With this temperament, he pretended to go for a day or two, and if he accidentally exposed it after a long time, it might make His Royal Highness the King of the Northern Territory unhappy.

It's better to take advantage of His Royal Highness the King of the Northern Realm's patience with him and show his own flaws. At most, he will go home, but at least he can keep Gongshuyi.

If he annoyed the King of the Northern Territory, I'm afraid the entire public loser would have to leave.

Liu Tan wasn't angry at all, he knew his faults, he wasn't down-to-earth enough, the era he lived in could be regarded as a fairyland for people of this era, and the standard of living has been high after passing through, so what the common people need, in fact He wasn't sure either.

He nodded and said, "Go ahead."

Gong Shucan's confidence increased greatly and he said: "Before, I thought about replacing all these things with bronze or iron parts, but if they were replaced, this plow would probably be worth a lot, even if only the plow body is made of iron. It is affordable by ordinary people.”

Liu Tan nodded. This was actually what he had been worried about all along. Even if the control of ironware in the northern border country was not so strict, it didn't mean that anyone could afford a plow made of iron.

"Then how do you mean to deal with it?"

Gong Shucan said: "Many people still use stone plows now, and this plow can also replace the stone plow body, but the stone plow body has a disadvantage that it is too far from the iron plow body to dig trenches with broken soil, so it is only It’s definitely not enough to do it once, at this time it needs to be plowed two to three times, if it’s a plow, it’s easy, but for such a huge plow, turning it is a very troublesome thing.”

Lu Xuan on the side asked curiously: "Since you can afford a large plow, why can't you afford an iron plow body?"

This time without Gongshu Charm, Liu Tan can explain: "If it is replaced with a stone plow body, among other things, the cost of these two iron plow bodies can catch up with the whole plow."

Lu Xuan nodded clearly. He didn't know very well about the various prices of big men before. In Wusun Kingdom, because of the scarcity of trees, wooden tools are not much cheaper than bronze ones.

He originally thought that the lack of trees in the northern border country might be the same as Wusun, but now it seems that there is a difference.

Liu Tan said with a smile: "Your improvement is very good, thank you!"

Liu Tan had already planned a reward for Gong Shucan, but he didn't expect him to make improvements, so he had to add a few bolts of cloth on the spot.

Gong Shucan listened to Bi Gao's long list of last times, and was stunned to find that these rewards were enough for their family to live for many years!

After Liu Tan circled around, he said on a whim, "Actually... plowing and sowing should be possible at the same time."

Gong Shucan had already been knocked unconscious by the money at this time, and he hadn't reacted yet: "Huh?"

Gongshu has also faced the huge rewards from His Royal Highness the King of the Northern Realm several times, but at this time he was able to calm down and asked: "Your Highness means..."

Liu Tan asked, "Can you combine the columbine cart with this plow?"

Gongshu was also taken aback for a moment: "The car? What is that?"

Liu Tan was surprised: "You don't know?"