Li Zhen looked at the drawings and was silent for a while, and began to conceive of the design of the compression ignition test in his mind.
After a moment, he said, "Try it and replace the gear with a belt."
"belt?"
Ma Jianbin asked.
Li Zhen said: "Just connect the belt to the rotor and use the belt as power transmission. This should save a lot of effort. The rotating shaft connected by the belt uses the mechanical lever labor-saving principle. This will make it easier."
Li Zhen then explained the belt transmission power system in detail to Ma Jianbin and others.
If you want to use a belt to transmit power, you have to rebuild the engine.
All previous engines transmitted power either through a crank and connecting rod or through chains and gears.
But now, under Li Zhen's guidance, they learned about a new thing - pulleys.
Pulleys are used on low-power engines and are very efficient and have many advantages.
First of all, the power transmitted by the pulley can alleviate the load impact. On the other hand, this enables labor-saving work.
Secondly, the power transmitted by the pulley is much less noisy than the gear transmission or chain transmission.
The only drawback is that the pulleys tend to slip.
But as long as the structure is designed better, it has strong wrapping and high friction. Then the slipping problem can be partially solved.
Li Zhen added: "Finally, let's enlarge the distance of the rocker to make it as labor-saving as a water well. Add a long lever to make the hand-crank more labor-saving. It is best to make it easy to operate. It can perform compression ignition. If it really doesn’t work, we can break through the plan. We don’t want the hand-crank type, we can use the foot-operated type.”
Ma Jianbin asked: "Pedal type?"
"Legs are stronger than hands. If you design the rocker in the shape of a pedal, wouldn't it be easier for others to step on it? It will take less effort than hand cranking."
Li Zhen also had a sudden idea. Zhang Zhi had never told him about this pedal-type thing, but he suddenly thought of it.
But what Li Zhen didn't know was that this pedal-type structure was exactly the structure used on motorcycles in Zhang Zhi's time.
The motorcycle can use electronic ignition and also has a backup pedal-operated compression ignition system.
Ma Jianbin left thoughtfully, redesigned the drawings, and redesigned the compression ignition test diesel engine.
He felt that he had to study this pulley carefully. This pulley opened his mind a little bit. In the past, everyone thought that the power connection between the rotating shafts was only safe if gears and chains were used.
But now it is discovered that the belt can actually completely replace the chain transmission and gear transmission.
The slipping problem is actually not as serious as imagined. As long as the adjustment is tight enough and the wrapping is strong enough. Belts actually transmit power more stably than chain gears.
Ma Jianbin and others went back to the furnace to study the compression ignition engine.
But another group of people researched the harvester.
To be honest, the harvester they studied was so refreshing to Li Zhen that he couldn't help but shout.
A huge thing, ten meters wide. Very big.
But it is completed, harvesting, threshing, separation and screening, a one-stop operation.
Li Zhen didn't expect that they could develop a harvester with so many functions and complete functions. You know, there are many precision parts involved, and there are many problems involved.
But they never expected that they would figure it out in just a few days.
The main developer of the harvester is a student at the Automobile Institute. His name is Li Aibin.
After getting to know him, I found out that Li Aibin’s family lives in Nanzhou and he has been involved with farmland since he was a child. I am no stranger to rice cultivation and farm work. During the holidays, I would go home and help my family thresh millet.
According to Li Aibin: "In fact, harvesters are not as high-end and sophisticated as we imagined. As long as we master the principles of threshing millet and based on the existing mobile power, it is only a matter of time before this set is figured out."
"We need a power locomotive. The front end is like a rake that goes out horizontally. The edges of these rakes have sharp movable blades. With the chain transmission, these blades can vibrate quickly. So, the locomotive with blades has evolved from When you drive past the rice fields, you can cut off all the rice in your path."
Li Zhen looked at the drawings, listened attentively to Li Aibin's words, and sighed in his heart that this was simply a talent.
Li Aibin continued: "After these rice straws are cut, they will pass through the conveyor belt behind the iron plow. A narrower and narrower partition mechanism is installed on the channel of the conveyor belt to allow the rice straws to be discharged from the mess. The shape becomes a neat 'vertical' shape. After passing through the conveyor belt, these vertically arranged rice will enter a separator."
Li Zhen said excitedly: "Tell me more about this separator."
"The separator is a vibration device that can be driven by an electronic motor or a gasoline engine. It is densely covered with iron thorns. When the rice stalks are violently vibrated in the iron thorn container, the millet will naturally be separated from the rice stalks. So As soon as it comes, the millet is completely separated."
Li Zhen asked: "After entering the separation vibrator, where did the millet go? Where did the rice straw 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. And directly under the screen is a granary. After the millet is separated by the vibrator, it goes directly into the granary. And the rice straw It cannot pass through the screen, so the rice stalks will be taken away by another mechanism, and then discharged out of the harvester and neatly arranged on the field after the harvester leaves.”
“But how was this straw taken away?”
"The bottom of the separator is the screen, and there is another layer between the screen and the separator. This layer is a device that takes away the rice straw. It is two cylinders with a rake separated across the cylinder. The two cylinders rotate, producing a gear-like effect. The rice stalks will be clamped and moved to the rear conveyor belt. And the large 'gears' will certainly not be able to clamp the much smaller millet, so the millet will move from The top leaks out, and the straw is sent out.”
Li Zhen looked at this precise road drawing and was astonished.
There are really too many geniuses in the Kyushu Academy of Sciences. It is difficult for Li Zhen himself to think of such a sophisticated one-stop idea.
Without Li Aibin's idea, I'm afraid it would have been impossible to develop it so quickly. It would require a lot of experiments and theoretical foundations.
But Li Aibin, who is imaginative and familiar with rice, unexpectedly broke through his thinking so quickly. I drew this heaven-defying drawing.
Not only Li Zhen was shocked.
Most of the people in the mobile hospital were shocked by Li Aibin. After they saw the drawings and saw this precise and smooth one-stop device, they were so shocked that they were speechless.
Three years ago, there was no steam engine on this earth.
Three years later, a student of Li Zhen designed a large harvester. A harvester that integrates harvesting, separation and screening.
Before I saw the drawings.
You tell others that there is a machine that drives over the rice fields and can sort out all the grains one by one. No one would believe it.
(End of chapter)