Although the changes brought by the bus company in Xianyang City are great, they are far less than the changes outside the city, from the emperor to the peddlers' pawns, the most concerned and discussed every day is the progress speed of the Weihe Bridge.

Half a month later, the approach bridges on both sides of the river have begun to take shape, and the dug embankment is made of bluestone to create a wide stone wall, which is bonded together with cement mortar, and after drying, it is as strong as steel.

The cement, sand, and gravel steel bars used to build the bridge are stacked on both sides of the river, like a hill.

The sandbar in the center of the river has become the center of the construction site, still piled up a large number of wood, bamboo and stone, the two piers have been poured and are about to be completed, and the scaffolding made of rough wood and bamboo in the river is about to be connected, which looks densely packed like a bamboo wall connecting the two banks of the Wei River, which looks very spectacular.

The dam seven or eight miles below has already been repaired, and the mill has also been repaired, and today is the day of the iron mill, so Chen Xu took the car to the location of the big water wheel early in the morning.

This news has been revealed by the onlookers of good deeds a few days ago, so early in the morning near the dam surrounded tens of thousands of people, horsebacks, cars, donkeys, carts and burdens, up to the princes and princesses, down to the peddlers and pawns, bustling to leak the water near the dam, the noise is boiling to the sky, and the noise of the noise can be heard in Xianyang City.

"Quick, get out of the way, Master Hou is here!" The crowd was noisy and noisy to get out of the way.

Chen Xu's carriage was escorted by a group of guards from the passage where the crowd had dispersed to the river.

"See Master Hou!" After Chen Xu got out of the car, Zhao Qing, Hu Kuan, Shi Lu, Ma Gong, Gong Sheng, and others took a large group of stewards and craftsmen to greet him.

"Excuse me!" Chen Xu waved his hand and got out of the car, looked at a huge iron mill that had been transported to the river, walked up and took a turn to watch it.

The diameter of this large iron mill is about the same as that of the factory, weighing more than 5,000 catties, the bottom one is slightly thinner, the upper one is slightly thicker, and there is a circle around the fan body evenly distributed twenty round iron teeth.

With the experience of the last time, the pouring of the large iron mill this time was very smooth, it only took six days from the making of the mold to the completion of the pouring, and there were no accidents in between, and then a special four-wheeled carriage with iron wheels and axles, five bullocks and hundreds of prisoners were used to transport this large iron mill to the river.

At this time, there were many people wearing brocade robes and official uniforms gathered around Tiemo, including princes who were idle and officials from the Ministry of Industry and the Academy of Sciences.

After a group of people greeted each other in a mess, Zhang Cang couldn't wait to pull Chen Xu's sleeve and said excitedly: "Master Hou hurriedly arranged for someone to place the iron mill, Cang is very curious about how this big waterwheel drives the iron mill to run!" ”

"Not bad, Qinghehou hurry up and arrange hoisting!" Several Hou Ye, who wore brocade robes and had nothing to do on weekdays, also couldn't wait to urge.

"Don't worry, wait until Ben Hou goes to the mill to take a closer look at the installation location!" Chen Xu walked into the mill that had not yet been capped with a smile on his face.

A large pit dug in the center of the mill has been repaired to the required style, in the middle of a round cement pier larger than the iron mill, in the middle there is a circular pit, the size is just the same as the diameter of the iron mill, in the center of the pit there is a circle of arms thick steel bars, exposed about five inches, these steel bars are embedded in the cement pier for a meter, and the position of each one corresponds to a circle of holes at the bottom of the iron mill fan, these are installed after careful measurements.

The cement pier is surrounded by a circular inclined hopper built with cement, after the iron mill rotates, the ground stone and cement will fall into the hopper and flow down, fall into an inclined channel below, there is also a storage pool below, the helper will load the stone in the storage pool into the bucket car, and then someone can turn the winch above the channel to pull the bucket car up, of course, it can be pushed by manpower.

Overall, this design is a semi-mechanized factory with the characteristics of later generations, and if a conveyor belt can be designed, both feeding and discharging will be extremely fast and easy.

Unfortunately, without motivation, no good idea can be realized.

Chen Xu carefully inspected the inside and outside of the mill, and also hammered the steel bars fixed with the iron mill a few times with an iron hammer, and found that it was like a competition with a mountain.

"Alright, ready to hoist the iron mill!" Chen Xu dropped the hammer and nodded.

"Attention units, prepare to hoist!" As the commander-in-chief of this iron grinding hoisting, Hu Kuan yelled excitedly.

A group of soldiers scolded the people around and retreated, and the hemp rods and gongshengsheng, who had already been prepared for grinding their fists, immediately commanded a group of tall and strong prisoners to use ropes to lift the lower half of the iron mill with thick wooden poles, and shouted the trumpet to carry the half of the iron mill into the mill, and several craftsmen in charge of placing it hurriedly stood around the cement pier and began to observe the position of the holes and steel bars under the iron mill.

"Left ~ Left Half a Foot Left ~"

"Turn three inches~"

"Okay, drop slowly...... Slow, stop...... Half an inch to the right......"

With the command of several craftsmen, a group of ragged prisoners carried the iron mill and slowly adjusted, and it only took ten minutes before and after, and the holes under the iron mill and all the steel bars were all aligned and fell.

"Square wood, iron hammer~" With Hu Kuan's roar, several helpers brought a few pieces of thick wood and put them on top of the iron mill, and then after beating the wood vigorously, half of the iron mill completely fell into the recessed round pit, and was completely fixed together with the cement pier.

Hu Kuan and Gong Shengsheng accompanied Chen Xu to inspect and thought that it had been completely installed in place, so they began to hoist an iron mill on it.

The top one is relatively simple, first place a calf-thick hinge in the center, and after installing it, also let a group of prisoners carry the upper half of the iron mill in and quickly put it on, and the two iron mills are firmly placed in the center of the mill.

Looking at the installed iron mill, Chen Xu also felt a little excited, the little heart was beating a little violently, and repeatedly watched the gears on the iron mill and the huge wooden wheel on the central shaft of the waterwheel.

"Notify the waterwheel to turn~" Hu Kuan instructed a craftsman standing on the top of the mill.

"Di ~ Di ~ " The craftsman blew a bamboo whistle, and then kept waving the order flag in his hand, under the dam, under the command of Shi Lu, hundreds of helpers moved the impeller of the waterwheel together, and the big waterwheel slowly began to rotate.

As the waterwheel turned, the wooden wheel on the spindle also began to rotate, and the iron tooth, which was more than a foot long, rotated, and hit one of the teeth of the iron mill with a click.

"Wow~" Driven by the huge inertia of the waterwheel's rotation, half a large iron mill weighing more than 3,000 catties was pushed and began to rotate without the slightest resistance.

"It's been turned around~"

In an instant, a group of craftsmen and craftsmen in the mill, including Zhang Cang, Hu Kuangong, and Gong Kuan, couldn't help but shout excitedly, and countless helpers and craftsmen who participated in the construction of the waterwheel and the mill waiting outside the mill also became noisy.

"Quick, push the iron mill forward!"

Chen Xu turned a deaf ear to the excitement and noise inside and outside the mill, and stared at the position of the rotating iron mill and the gears of the wooden wheel with a serious face.

After three more turns, the teeth between the iron mill and the wooden wheel were misaligned again, and Chen Xu instructed the craftsman to push the stone mill again for calibration.

Soon twenty minutes passed, and after seven or eight times of fine-tuning and calibration, the big iron mill and the wooden wheel finally snapped together perfectly, and the rotation was very smooth, and there was no sign of misalignment, so Chen Xu ordered to stop the rotation of the water wheel.

"Do you understand the process of calibrating the gears?" Chen Xu wiped his sweat and turned his head to ask Hu Kuan, Gong Win and the others.

"See clearly!" A crowd of people all nodded their heads quickly.

After a burst of cheers in the mill when the iron mill began to turn, everyone found that Chen Xu began to adjust the gears seriously, so everyone quickly quieted down and watched, for fear of missing any of the process.

"Just see clearly, between the iron mill and the wooden wheel rely on these iron teeth occlusion rotation, at the moment we have not carefully calculated the number and position of the gear, after a period of operation will definitely accumulate to a possible wrong time, so on weekdays to arrange people to check the operation of the gear at any time, if there is a dislocation phenomenon must be adjusted, otherwise it may cause damage to the gear, don't be too careless!"

"Don't worry, Master Hou, I will arrange for someone to keep an eye on it every day, and there will be no mistakes!" Hu Kuan hurriedly patted his chest and promised.

"Well, especially in the first few days, you must monitor it at all times, summarize the dislocation rules, and after finding the rules, you don't have to be so troublesome, just arrange someone to adjust it regularly~" Chen Xu nodded.

"With such a big pair of iron mills, it is estimated that grinding flour will definitely be done soon!"

A Hou Ye in a brocade robe has just finished watching the installation and commissioning process of the iron mill, and although he feels amazing about the gear, he is more interested in the work efficiency of this super huge iron mill.

"Haha, what Wen Jihou said is that the diameter of the ordinary stone mill is less than two feet, and the weight is only about two hundred catties, and the diameter of this iron mill is eight feet, and the weight is more than five thousand catties.

"Master Hou, Cang is very curious about how fast it is, why don't you calculate it today?" Zhang Cang heard about the installation of the waterwheel mill today, and he couldn't wait to give up the position of the commander-in-chief of the bridge engineering headquarters and ran over to watch, this kind of gear transmission is far more attractive to him than the bridge repair.

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