Li Zhen looked at the drawings and was silent for a while, and began to conceive the design of the compression ignition test in his mind.

After a moment, he said, "You try it, change the gears to the belts." ”

"Belts?"

Ma Jianbin asked.

Li Zhen said: "It is to connect the belt to the rotor and use the belt as a power transmission. This should save a lot of effort, and the rotating shaft connected by the belt reuses the lever on the mechanical labor-saving principle. It's going to be a little easier. ”

Li Zhen explained the belt transmission power system to Ma Jianbin and others in detail.

If you want to use the belt to transfer power, you have to reinvent the engine.

All previous engines transmitted power, either crank linkages or chains and gears.

But now, under the guidance of Li Zhen, they have learned a new thing - pulleys.

Pulleys are used in low-power engines, and the efficiency is very high, and the advantages are very numerous.

First of all, the pulley transmits power to soften the load impact. On the other hand, this is a labor-saving task.

Secondly, the transmission power of the pulley is much less noisy than that of the gear transmission or the chain transmission.

The only downside is that the pulleys are prone to slippage.

However, as long as the structure is designed a little better, it has strong wrapping and high friction. Then the problem of slippage can be partially solved.

Li Zhen said again: "Finally, enlarge the distance of this rocker a little more, so as to achieve the same kind of labor-saving as the pressurized water well." With the addition of a long lever, the hand-cranked type can be more labor-saving, and it is best to easily compress ignition. If it really doesn't work, you can break through the plan, let's not use the hand-cranked type, you can also use the foot pedal type. ”

Ma Jianbin asked: "Foot pedal? ”

"Legs are stronger than hands. If you design the joystick in the shape of a pedal, won't it be easier for others to step on it? Less effort than hand cranking. ”

Li Zhen also had a whim. This foot-pedal Zhang Zhi didn't tell him about it, but he suddenly thought of it.

And what Li Zhen didn't know was that this pedal structure was exactly the structure used by motorcycles in Zhang Zhi's era.

Motorcycles can be electronically ignited and there is also a backup foot-operated compression ignition system.

Ma Jianbin left thoughtfully, redesigned the drawings, and redesigned the compression ignition test diesel engine.

He felt like he had to study the pulley. This pulley opened up a little idea for him, and everyone used to think that the power connection between the shaft and the shaft was only safe by using gears and chains.

But now it is found that in fact, the belt can completely replace the chain transmission and gear transmission.

The problem of slippage is not as serious as imagined. As long as the adjustment is tight enough, the wrapping is strong enough. In fact, the transmission power of the belt is more stable than that of the chain gear.

Ma Jianbin and others went back to the furnace to study the compression ignition.

Another group of people and horses have studied the harvester.

To be honest, the harvester they studied made Li Zhen himself refreshed and couldn't shout.

A behemoth, ten meters wide. Very big.

But it is completed, harvesting, threshing, separation, screening, one-stop operation.

Li Zhen didn't expect that they would be able to research a harvester with so many functions and such a complete set. You know, there are a lot of precision parts involved, and there are many problems.

But they never expected that in just a few days, they would figure it out.

The main developer of the harvester is a student of the Mobile Institute. His name is Li Aibin.

After understanding, I learned that Li Aibin's family lives in Nanzhou and has been dealing with farmland since childhood. He is no stranger to rice cultivation and farm work. As soon as I have a holiday, I will go home to help the family thresh the grain.

According to Li Aibin, "in fact, the harvester is not as high-end and precise as we imagined, as long as the principle of threshing is mastered, on the basis of the existing maneuvering power, this set is only a matter of time." ”

"We need a power locomotive. The front end is a horizontal rake with a sharp, movable blade at the edge. With the chain drive, these blades can vibrate quickly. As a result, a locomotive with a blade drove over the rice paddies and cut all the rice in its pass. ”

Li Zhen looked at the drawings, listened attentively to what Li Aibin said, and sighed in his heart that this is simply a talent.

Li Aibin continued: "After the stalks of these rice are cut, they pass through the conveyor belt behind the iron rake. By setting up a narrower and narrower partition mechanism on the channel of the conveyor belt, the rice stalks can be changed from a messy shape to a neat 'vertical' shape. After passing through the conveyor belt, the rice is arranged vertically and then enters a separator. ”

Li Zhen said excitedly: "Let's talk about this separator carefully." ”

"The separator is a vibrating device that can be driven by an electric motor or a gasoline engine. It is densely packed with iron thorns, when the rice stalks are violently shaken in the thorn container. The millet is naturally separated from the rice stalk. In this way, the millet is directly and completely detached. ”

Li Zhen asked: "Then after entering the separation vibration, where did the millet go?" Where does the rice stalk go? ”

Li Aibin pointed to the drawing and said: "The lower part of the container is a screen, and only the sieved millet can pass through. The bottom of the screen is directly a granary, and after the grain is separated by the vibrating machine, it goes directly into the granary. The stalks can't pass through the screen, so the stalks are taken away by another mechanism, and then discharged from the harvester and lined up neatly in the field after the harvester leaves. ”

"But how was this rice stalk taken away?"

"At the bottom of the separator is the screen, and there is a layer between the screen and the separator. This layer is a device for taking away the rice stalks, which are two cylinders, and on the cylinders are rakes separated from each other. The two cylinders rotate to create a gear-like effect. It will move to the conveyor belt behind the stalk, and the big 'gear' will definitely not be able to hold the much smaller grain, so the millet will leak from the top, and the stalk will be sent out. ”

Li Zhen looked at this precise road drawing and was shocked.

There are really too many geniuses in the Kyushu Academy of Sciences, and this kind of sophisticated one-stop idea is difficult for Li Zhen himself to think of.

If it weren't for Li Aibin's idea, I'm afraid it would really not be possible to study it so quickly, and it would require a lot of experiments and theoretical foundations.

But this imaginative and familiar with rice, Li Aibin, broke through his thinking so quickly. I drew this blueprint against the sky.

It's not just Li Zhen who is shocked.

Most of the people in the mobile courtyard were shocked by Li Aibin. After they saw the drawings and saw this delicate and smooth one-stop device, they were speechless in shock.

Three years ago, there was no steam engine on the land.

Today, three years later, Li Zhen's students have designed a large harvester. It is a harvester that integrates harvesting, separation and screening.

I didn't see the drawings before.

You tell people that there is a machine that drives over the rice paddies and can sift through all the grains one by one. Surely no one believed it.