Genius remembers in a second [Aishang Novel Network biquge.info] to provide you with wonderful novels to read.

The pulley looks simple, but it is a great test for the blacksmith of this era, and the pulley groove is a complex configuration for the blacksmith, and it is not something that the average blacksmith can deal with.

It is said that casting with cast iron is the easiest way, but after trying casting, Mao Geng felt a little sad about the cast iron castings, the cast iron of this era are all white cast iron, and the pig iron produced by Fujia is slightly better, and it still belongs to white cast iron. The castings made of white cast iron are too brittle, and the moving parts that are stressed like pulleys are also related to personal safety, according to Mao Geng's standards, there must be enough safety margin, and they would rather kill chickens with cattle knives, and they must not use cast iron to fill the number.

The four blacksmiths couldn't understand the drawings, Mao Geng had to patiently compare the pulley to be built, the four blacksmiths pondered for a long time, and finally Huang Wangcai started first, but Huang Wangcai's skills were limited, so he finally dug out the hole in the middle, and then didn't know how to make the pulley groove.

Li Song, believing that he was the most skilled blacksmith in the local area, picked up the hammer and tried to make a groove on the iron billet that Huang Wangcai had just forged, and he could only shake his head soon after. Even Li Song himself could not do anything, so Li Song thought that it was obvious that it would be impossible for the people here to build such a complex iron piece, so Li Song claimed that to build such a grooved round wheel, he was afraid that it would only be completed by a skilled blacksmith from Lin'an.

Qu Deer's ability is even more under Huang Wangcai, and he naturally echoes Li Song's statement, for him, it is too difficult to make this pulley, not to mention that the shape is so complex, and the requirements are particularly high, and the inner hole and pulley groove also require special roundness, Qu Deer is quite self-aware, this job is not something he can do.

Mao Geng felt helpless, there is no industrial base at all in this era, it seems that you have to do your best to get on the lathe, and the crucible steelmaking must also be fastened, at least to be able to refine high-carbon steel that can be used as a turning tool, in addition, the material of pig iron must continue to improve to meet the casting requirements, alas! The industrialization of the Great Song Dynasty can be said to have a long way to go.

Mao Geng has been paying attention to Fan Biaoyong, who is still a little bruised and swollen on his face, but this guy has not moved, neither silent nor action, as if he was thinking about something, and seemed to retreat in some difficulty. Mao Gengxin said that this small blacksmith who is known as coming from Bianliang is also at this level, and the blacksmith in the capital of the Great Song Dynasty seems to be nothing more than that, which shows that the limitations of the times cannot be underestimated.

Mao Geng was very disappointed, but on the other hand, he was thinking of a workaround, maybe he had to use pig iron castings, it is said that the white cast iron can also greatly improve the material after high temperature annealing, the big deal is to make the pulley bigger, and then annealed to improve the material. But high-temperature annealing also has to be tried and tested to figure it out, alas! In these years, everything has to be explored from scratch, and I really don't know how much effort it will take to promote the industrialization of the Great Song Dynasty!

At this time, Fan Biaoyong plucked up the courage to speak:

"Mr. Mao, the kid has an idea, I don't know if it's okay?"

When Mao Geng was desperate, he suddenly heard Fan Biaoyong say that he had an idea, which was like being shot in the arm, and immediately asked:

"Oh, what do you think, just tell me."

Fan Biaoyong touched his head and said with some uncertainty:

"When my master makes difficult iron pieces, he sometimes makes them separately, and then puts the two pieces together in the furnace to burn them red, and then fishes them out at the same time and beats them together while they are hot. The master once said that this is the most difficult welding technique to learn, but unfortunately the kid didn't learn this craft, and the kid was ashamed! Mr. Mao, maybe the welding technique used by my master can be created. ”

Fan Biaoyong is actually talking about his father, but in order to blend in with the camp of the Reformers, he was arranged to go south alone, and at this time, he could only lie to his father as a master.

When Mao Geng heard this, he was overjoyed, patted Fan Biaoyong's shoulder, and said in his heart, Why didn't I think of this section! Unexpectedly forgot such a simple thing, after being reminded by Fan Biaoyong, Mao Geng learned that the clever blacksmiths of this era also knew how to disassemble, forge and weld. Well, Fan Biaoyong's master has such skills, and he is worthy of being a blacksmith living in Bianliang, and he really has some Taoism! As for whether Fan Biaoyong has learned the advanced forging skills of welding, it doesn't matter, Mao Geng understands the principle, but he can teach these Song blacksmiths the so-called advanced welding and forging skills.

Mao Geng consulted the advice of the four blacksmiths to see whether it was better to break it down into three pieces or two pieces, if it was three, it could be broken down into two rings and a central cylinder, if it was broken down into two, it would be a ring and a complex circle with holes. In the end, the four Great Song blacksmiths felt that they were not sure about making a complex configuration, and for the sake of simplicity of forging, it would be better to disassemble it into three pieces, so they unanimously agreed to disintegrate it into a central cylinder and two identical rings. Mao Geng patiently drew the decomposition pattern and explained the configuration of the decomposition in detail until Li Song and Fan Biaoyong understood. Mao Geng didn't care about the other two guys, Huang Wangcai and Qu Deer, anyway, these two fools didn't understand what they said, so he directly sent the two of them as assistants to Li Song and Fan Biaoyong, Huang Wangcai assisted Li Song in making the center cylinder, and Qu Deer assisted Fan Biaoyong in making the ring.

After decomposition, the creation of the decomposition part is much simpler, under the guidance of Mao Geng's on-site, half an hour later, the decomposition part will be built, three decomposition parts are heated in the furnace at the same time to the forging temperature, the two rings are set on the central cylinder, while the hot forging, the three decomposition parts are welded together, and a rough pulley is made.

There is Mao Geng's exploded view and on-site guidance, click on this layer of window paper, and the four Song blacksmiths then make full use of Li Song's two sets of iron-striking skills, with tacit understanding, clanging, at the end of the day, six pulleys were successfully made.

Although Mao Geng has been staring at the creation, given that it is handmade, the accuracy of these pulleys cannot be guaranteed. For example, although the inner hole uses a mandrel rod, the mandrel is also handmade, so the roundness and cylindricity of the inner hole are very unreliable. But this is the level of this era, and it is rare to be able to make it look like this.

Fortunately, Mao Geng borrowed the design of the sliding bearing from the later generations, and according to Mao Geng's design, a bronze alloy bushing doped with antimony was cast in the inner hole of the iron pulley, which was equivalent to the bearing of the sliding bearing.

After pouring the bronze bushing, the inner hole is then processed with a steel turning tool with a wooden lathe to create an oil groove, which is considered to have the oil storage function of the sliding bearing. Well, this kind of pulley is already the most sophisticated and powerful moving parts of this era, and Mao Geng believes that they are enough to tow ships on the Zijiang River.

It took five days to complete the installation of the water wheel, and the wooden shaft of the water wheel was also covered with semi-circular bronze bearings, which can rotate flexibly in the front and rear two thick cast iron bearing seats, which is probably the most luxurious water wheel in history.

The blades of the water wheel are also different from those of traditional water wheels, with a slight slope of the blades, the purpose of which is of course to ensure the continuity of the power.

A large wooden gear is installed behind the rear bearing seat of the water wheel, which can drive the winch to rotate through a pair of gears. In fact, the hydraulic mechanism of the Song people also used a mechanism that was suspected of being a gear to transmit, but the suspected gear was very simple, in other words, it was only an intermittent transmission - it was better to call it an intermittent toggle.

The tooth shape of the wooden gear designed by Mao Geng is much more exquisite, and the tooth rings of the two gears are interlocking, although it has not yet reached the point of tight fit, but it is enough to be called precision transmission.

The winch also uses the design of the sliding bearing, and the wooden shaft is also covered with a semicircular copper sleeve, according to the meaning of Mao Geng, it is best to use the iron shaft, but the iron shaft is not so easy to build, and it is not easy to process, so I have to retreat to the next best thing, or have to use the wooden shaft.

Now a hydraulic tugboat system is complete by installing the towing vessel's block of pulleys.

In order to achieve perfect force for towing the ship, a girder with a triangular support extends from the shore to the sky above the river.

After another day of installation, not only the pulleys used to tow the ship were installed at the front end of the girders, but also the guide pulley blocks.

In line with the principle of right-hand boating, this hydraulic towing system is installed on the right side of the counter-current direction, and it is not an exaggeration to describe the tall water wheel as "towering". The side of the water wheel is a winch with a clutch, and then a dozen battles upstream, is the pulley that extends to the surface of the river, dragging a thick rope from the pulley, and the end of the rope with a hook pulls a green pontoon, which has been floating in the downstream direction under the current rush, and the boat coming from the countercurrent can see the green pontoon floating on the water surface at a glance.

Compared with this hydraulic towing system, the downstream reduction system on the left side is much simpler, and there is also a girder overhanging the river, but the whole system does not have a towering water wheel, only a reduced winch is installed next to the girder, which looks far less magnificent than the hydraulic mechanism on the right bank.

Mao Geng calculated, the two sets of Seiko systems on the left and right sides of the strait, the cost of making the zuò has exceeded 190 guan, which has not yet counted the wages, if the wages are calculated, I am afraid that the cost of making the system of three or four hundred guan can be calculated.

Mao Geng looked at the project led by himself, although it is not a high-level project, but in terms of water, this has been called a unique one, which can be described as a pioneering move in the history of water shipping.

However, this is not the most rapid water flow of the dangerous beach, Mao Geng is imagining, the next water flow of the sharpest, the largest drop of the dangerous beach, is to build a Ferris wheel similar to the Ferris wheel of later generations. Hehe, when I came to the Southern Song Dynasty, it seems that I am going to continue to challenge the level projects of this era.