Rolling bearings are generally used for rotating parts, which can greatly reduce the friction of rotation. Pen % fun % Pavilion www.biquge.info

The rolling bearing is applied to the ox force overturner, which can naturally save a lot of effort for the ploughing cattle, so that the hydraulic rollover that originally needs to be pulled by four oxen only needs two oxen.

The invention of the rolling bearing dates back to the 17th century, and the most important component of the rolling bearing is the steel ball, while the outer ring of the bearing is relatively simple.

But even so, Xiao Ming is now unable to make high-precision rolling bearings, and his method of making steel balls is only to use the lowest end of the free-fall motion.

This method is to let the molten steel fall freely, in the process of falling, the molten steel and water will naturally form a ball, under the molten steel is cooling water, the molten steel falls into it and quickly cools into a steel ball.

The steel balls produced by this method are of different sizes and surfaces, and the next step is the processing of the grinding machine, which is to grind the steel balls into spheres of the same size as much as possible.

Now Xiao Ming uses this kind of bearing on the bull force overturn, in order to let the overturn have an irreplaceable accessory, so that no one can copy it at will.

Because he was also going to sell the ox power to the merchants who opened the mines.

In this era, the water in the pit is the biggest problem for miners, and the hydraulic dump can not only irrigate the cultivated land, but also pump the water out of the pit.

As Pang Yukun issued an order for all states and counties to send skilled craftsmen to Qingzhou to study, the news of Niu Li's overturn gradually spread.

Naturally, a shrewd businessman would not ignore this news, in fact, because of what Xiao Ming had come up with one after another.

Now businessmen are very concerned about any wind and grass in Qingzhou, and they all hope to seize business opportunities before others.

Of course, Xiao Ming didn't hide it, and directly asked the equipment department to place the Niu Li overturned car and placed it on the edge of his field for a live demonstration.

"Your Highness, this waterwheel is really good, the water pumped this day is worth ten days before."

The first to learn the news was naturally the local wealthy family in Qingzhou, and Wang Shijie and others found the location of the waterwheel after only one day.

And this kid is very cunning, and he also has a family member, but Xiao Ming only glanced at it and knew that this person must be the top carpenter of the Wang family.

Because just from this man's rough palm, he could see the surprised look of the waterwheel.

"Wrong, at least twelve days." Xiao Ming said confidently that although this kind of ox power rollover still uses ox power, its ability can basically be equivalent to a small modern electric pump.

If the cattle are constantly replaced, the amount of irrigation is considerable.

Qin Mu has already returned from Chang'an, this time Wei Qing and Sun Dong have also arrived, and the four self-appointed ones have all arrived.

Since a large number of foreign businessmen have poured into Qingzhou, the four of them have become more attentive to Xiao Ming, and now they are like farts all day long, and they will go to Xiao Ming when they have nothing to do.

"Twelve days!" Qin Mu exclaimed, looking vigorously at the structure of the overturned car and secretly noted.

Sun Dong and Wei Qing are the same, the auction of the four chambers of commerce this time can be squeezed out by Xiao Ming.

Now they all want to be able to save, and unlike soap, this rollover is clearly here.

Xiao Ming smiled secretly, and he didn't debunk it, he couldn't hide the overturn, and now he could only say that if someone else could make it, he could only admit it.

If he can't make it, he will be profitable.

Using the Patent Division, he can control the territory of the fiefdom and no one dares to copy it, but he can control the rest of the Great Chongqing Kingdom.

The four of them watched it for a while, chatted with Xiao Ming for a while, and went back separately.

"Your Highness, these four people are obviously stealing their studies." Pothos said disdainfully.

Xiao Ming smiled faintly: "Hehe, if you steal to learn, you can learn secretly, whether you can learn or not is not certain." ”

After speaking, he turned to look at the fields on the bank of the Xiaoqing River, Lu Fei's winter conscription had ended, five thousand recruits, three thousand remained in Qingzhou, and the others were assigned to other states and counties.

Because he got one million taels of silver, Lu Fei's heart was also big, and he still did not stop recruiting troops in the spring, he discussed with Lu Fei, preparing to recruit another 5,000 people, and control the army of the fief at 13,000 people.

If there is enough food in Qingzhou in the coming year, it will consider continuing to recruit soldiers.

And among the newly recruited people, Xiao Ming asked Lu Fei to try his best to select some coastal fishermen's children to come out.

The construction of the Navy is not a matter of overnight, just finding direction in the sea is a problem.

In this era, the so-called nautical basic sh ship walked along the mainland, so as not to lose its way, and Xiao Ming selected this group of people specifically to cultivate a generation of people who know how to sail.

Now his plan is being realized step by step according to the plan, such as the construction corps, and now on his field, the recruits are pulling ploughing oxen to reclaim the land, and hundreds of ploughing oxen are busy pulling ploughs.

In other uncultivated places in Qingzhou, Lu Fei was also busy cultivating land with his soldiers.

In order to allow the construction corps to quickly settle the fields, Xiao Ming equipped the corps with the best farming tools this time, not to mention the sufficient ploughing cattle, this ox power overturn is also the first time to deliver.

He was counting on the granary of the fiefdom to be filled with something in the coming year.

The green pothos followed Xiao Ming's gaze and said with a smile: "Your Highness, this is the first time I have seen a soldier in this kind of land. “

Xiao Ming knocked on the pothos's head, "Follow this king, there are still many things you saw for the first time?" “

After walking around the cultivated land, Xiao Ming checked the reclamation situation, and then went to Qingzhou City with the green pothos.

At this time, there is still snow on both sides of the official road leading to Qingzhou, and the cold of winter has not yet faded, but spring is not far away, and it will be a season full of hope.

Like his fiefdom, it is a place of hope.

After two or three months of busyness, he has drummed up a lot of goods that are not available in Dayu, and these commodities are also expanding their influence and bringing him continuous profits.

But the future is unknown, and he does not dare to relax at all.

Born in the royal family, sometimes you can't help yourself, if you don't move forward, there is an abyss behind you.

Entering Qingzhou City, Xiao Ming smiled as many foreign businessmen as he shuttled, and now he has at least taken the first step, and now he has to attract more businessmen to enter Qingzhou to buy land and build workshops.

The goods produced in Qingzhou were then shipped to various parts of the country, bringing huge profits.

And in order to achieve this goal, he also needs to come up with more products that will attract merchants.

Perfume, soap, and liquor are just the lowest end in Xiao Ming's eyes, Niu Li is still a little bit of science and technology, and countless technologies in the science and technology library are still waiting for him to become actual commodities here.

However, now Xiao Ming realizes a problem, that is, his fiefdom seriously lacks technical talents, and Pang Yukun has set a very good precedent by asking various states and counties to send craftsmen to learn.

Now it's time to reserve technical personnel to expand the scale of production, and this group of technical talents will be born from the slaves, because this is the easiest person for him to control at the moment.