When he saw the blast box, an idea flashed in Lu Daqiang's mind. The blast box also transports wind, and its interior is a piston structure.
Then Lu Daqiang thought that since the power of the steam is so great, if the spout of the teapot is made into a cylindrical shape, and then a piston is made inside that is pushed like a blower, and the wooden rod or iron rod of the piston is connected With a crankshaft, it can drive many machines.
Lu Daqiang is naturally no stranger to crankshafts and connecting rods, because they all have manual machine tools, and there are many places where crankshafts are used in machine tools. In fact, these connecting parts can be traced back to the Qin and Han Dynasties, including through gear conversion. To change the direction of force, as a master master, Lu Daqiang is naturally familiar with it.
Changing the direction of the force in a back-and-forth motion is also very simple.
Then Lu Daqiang came up with the idea of a blast box, a double-inlet blast box. This type of blast box was invented during the Wude period to improve iron smelting efficiency. Whether it is pushed in or pulled out, it will send air into the furnace. This greatly improved the blasting efficiency, which was also one of the important tools for further improving Datang's iron smelting technology.
A double-inlet blower box invented in the Tang Dynasty.
As a top carpenter, Lu Daqiang naturally knows how to make a double-inlet blower box. He only needs to replace the blower piston in the middle of the blower box with a metal one, and change the air inlets on the left and right sides into air outlets, replacing the original The air outlet is changed to an air inlet for steam, so that as the steam is pushed, the piston in the middle will reciprocate back and forth.
Then the left and right steam types will take turns to enter the steam, and the steam will take turns rushing back and forth from the two air outlets to push the other two connecting rods for reciprocating motion.
After figuring it out, Lu Daqiang immediately began to cast such a structure. For the seal of the piston structure in the middle, Lu Daqiang used the metal sealing ring invented by His Highness before. This thing is very easy to use.
It's just that the difficulty of casting far exceeded Lu Daqiang's imagination. It may also be because of their unskilled skills. There were many problems with the sealing of the cylinder alone, and a previous test was caused by the casting of the cylinder. It was not enough, causing the cylinder to get stuck, and then the front connecting pipe burst directly.
If no one happened to be around at the time, and the seal was pointing upwards, everyone who was hit by it would probably be dead. The collapsed seal directly made a big hole in the concrete wall of the experimental site.
And the power of steam that time gave their people a new idea, that is, if they make a long pipe, stuff an iron ball inside, and then heat it with steam, the iron ball will be stronger than the steel pipe. Slightly larger, can the power of steam push it out.
If it were launched, wouldn't it be hugely powerful? They also tested this, but the result left them speechless because the steel pipe exploded.
The high-pressure steam was not enough to push the iron ball out of the steel pipe, but the sealing valve behind it could not withstand the force of the steam and exploded.
Later, they thought of other ways to make the iron ball into the same volume as the steel pipe, but placed a wooden cylinder with a thin front end and a thick rear end behind the iron ball to plug the steel pipe, and the iron ball was The wooden pile cylinder is cross-fixed with thin iron sheets.
Because the back end of the wooden pile is thicker than the steel pipe, when there is huge pressure, the wooden pile will be directly squeezed and deformed, and they also applied lubricating oil on the inner wall of the steel pipe for lubrication.
The final result... Well, how should I put it, it was quite powerful, because the iron ball exploded due to the huge steam pressure flew hundreds of meters, but the whole process was too long.
Later, Lu Daqiang and the others stopped doing this thing, and instead handed it over to Lu Daqiang's apprentices, while Lu Daqiang himself continued to study this machine.
Now the whole machine finally works!
"Relieve the pressure and pull a drive shaft over. Let's see if we can convert it to a hand drill." Lu Daqiang said loudly.
The person in charge of blowing the wind immediately stopped what he was doing, and some craftsmen also took the risk to enter the room and pulled a device. With a loud "buzz" sound, a stream of white steam It instantly sprayed out from the hole reserved in the concrete room.
After the steam jet slowed down, Lu Daqiang and the others entered the room one after another, and soon someone pulled over a prepared manual machine tool.
This was originally a machine tool responsible for drilling, which they copied later, but now it has been modified and a special thick gear transmission shaft is connected to it.
After closing the intake valve, the flywheel here stopped. Lu Daqiang and the others quickly connected the thing. After the transmission shafts were connected together, Lu Daqiang immediately ordered people to reopen the intake valve and start heating.
When the flywheel started to rotate again, the drill bit next to it quickly began to rotate at a terrifying speed. Lu Daqiang and others immediately brought a thick piece of wood and began to approach the drill bit.
Along with the flying wood chips, the drill drilled directly through the thick wooden board at an unprecedented terrifying speed.
In an instant, the whole room burst into warm applause!
"It worked! It really worked! This thing is so useful!" Everyone roared excitedly, and even some craftsmen couldn't help but hug each other directly, because this thing is no longer theirs It was made based on His Highness's drawings, but they made it themselves!
Although they are also inseparable from His Highness's guidance, compared to the past when they could only follow the drawings, now they can develop something useful to His Highness themselves. Of course they are excited.
His Highness is too kind to these craftsmen. If they can't develop anything useful, they will feel that they are really ashamed of His Highness.
"Should we report to His Highness?" A craftsman couldn't help but ask.
"Report, of course, report to His Highness! Since this thing relies on the power of steam, otherwise it should be called a steam engine." Liu Chang said.
"Okay, let's call it a steam engine. Learn from His Highness. The naming of these things should be simple and straightforward so that ordinary people can understand it." Lu Daqiang also said excitedly.
After deciding to announce the good news, Lu Daqiang naturally asked someone to notify Tian Meng. They even forgot that it was already approaching dusk at this time.
When the guards in the industrial zone received the order and rushed to Chang'an City, the gates of Chang'an City were already closed. Fortunately, this was a matter in the industrial area. The guard knew the importance and directly took out the token and asked the defenders to open the city gate.
Then he himself rode directly into the city.
