The ups and downs of life in the Siheyuan

It was agreed that it would take half a year, but unexpectedly, samples were produced in just two months.

Li Yuan was also a little surprised in this regard. He felt that it went very smoothly, like God's help.

Yan Jiecheng hurriedly fanned the window with a cloth, hoping that the smoke would dissipate quickly.

"Let's go, take it out and have a look."

Two of the new workshop directors immediately stepped forward.

Li Yuan hurriedly stopped him, "How can I help you? Untie me and push the cart over."

He didn't feel sorry for them, but he didn't believe them. Who would he blame if he fell down the stairs?

Yan Jiecheng agreed and trotted over pushing an experimental flat cart.

Several people worked together to put the engine on the cart and slowly pushed it to the stairs.

He worked together to lift the cart and engine downstairs.

Just in the open space in front of the office building.

Putting the engine on the ground, Li Yuan shook it with his hands.

Soon the chug sound sounded again.

Listening to the harsh chug, everyone clapped excitedly.

Some people in the workshop were also alarmed and slowly poked their heads out from the door of the workshop.

Soon the engine was shut down and moved to the assembly shop.

The space here is large enough and the tools are complete.

"Xiao Li, is the entire engine expensive?"

“Compared with other engines on the market, the current cost does not have much advantage.

The main reason is that all parts are made of steel.

Next, most parts can be cast in gray cast iron, so that the overall cost can be reduced a lot.

By then, the overall cost should be reduced by 30% to 50%."

"Okay, you can tell everyone about the use."

"Liberation, you go to my office, there are several drawings of tractors in the first cabinet."

Yan Jiecheng agreed and ran to the second floor of the office.

"Everyone, please be patient. When I have free time, I sketched a few drawings based on my own understanding. Please correct me when the time comes."

Everyone followed with a few polite words.

After a few minutes, Yan Jiecheng ran downstairs with the drawings and handed them to Li Yuan.

Li Yuan handed the drawings to Lu Xingyu first. He picked up the first one and gave the others to the next person.

After ten minutes, everyone had finished reading.

"I know this one with four wheels is a tractor, but what are these two wheels?"

someone asked, holding up a drawing of a small walk-behind tractor.

"This is called a walking tractor. The first domestic walking tractor was manufactured in Wuhan in 57. It seemed to have only 4 horsepower and a single function.

By replacing the blade tires, I can go into the rice fields; by replacing the rubber tires, I can carry out transportation, dryland plowing, and sowing.

It can also be used as a diesel engine to drive water pumps, flour mills and other purposes."

"Look, everyone, this is the pattern of plowing dry land."

"This is a pattern of plowing rice fields."

"This is a seeder."

"This one has a rear bucket and must be used for transportation."

"This looks like a car."

Li Yuan took the last drawing.

“Yes, this one with a shed can be regarded as a small car, and the back bucket can be used to haul cargo.

Mainly used for rapid transfer of materials and parts in factory areas.

Because of its simple structure and low price, it has great application prospects."

Lu Xingyu took the drawing and said, "This is a bit interesting. This compact shape is indeed easier to travel through the factory than a truck.

In this way, I think the structure is not complicated. Xiao Li, do you think you can build a prototype car? "

"No problem. However, the gearbox needs to be redesigned."

"Okay, I suggest building a car like this first. It will be more intuitive later."

Lu Xingyu looked at everyone and thought of striking while the iron is hot.

"Comrades, the series of wrenches in the machinery factory were designed by Li Yuan, and he also invented this diesel engine.

I would like to recommend him to be the director of the technical department of our factory. Do you have any objections? "

Everyone has come to terms with this in private, it's just a matter of time.

Moreover, whether the machinery factory can be upgraded and whether it can be upgraded quickly is closely related to Li Yuan.

So everyone knew the seriousness of the matter and expressed their approval.

"Then we have just held an on-site meeting and will report it to our superiors for approval in the near future."

Everyone agreed.

What followed was a chorus of congratulations, and Li Yuan returned the greetings one after another.

Yan Jiecheng and Liang Zhixiang in the mold workshop looked at each other and were both very happy.

They are all direct descendants of Li Yuan. If Li Yuan rises quickly, they will have more opportunities in the future.

For the gearbox, Li Yuan chose a design with 3 forward gears and 1 reverse gear.

Perhaps the most complicated thing is the clutch. The principle of this is very simple, and the current technology is also very mature.

So for the time being, Li Yuan chooses to purchase directly.

The design difficulty of gearboxes has dropped dramatically.

It only took half a month to complete the gearbox design.

In fact, it could be faster, but in order to make the coordination smoother, Li Yuan repeatedly calculated the design parameters.

Another half month passed, and a small gearbox was assembled.

Then there is the welding of the frame.

Use angle steel directly, complete the welding of the beam first, and then install the gearbox and engine.

Then proceed to welding and installation of the frame and roof.

Finally install the four tires.

A simple car with a load of 2 tons and a length of less than 3 meters appeared in the assembly workshop.

Li Yuan tried moving forward and backward in the workshop, and made corrections again where the operation was not smooth.

Of course, Yan Jiecheng was also the recorder throughout the whole process, responsible for organizing and binding it into a volume.

When the final test was completed, Li Yuan drove the car to the courtyard.

Started to circle around the factory area, the highest gear was 3, the speed was almost 40 kilometers/hour.

The speed of 40 kilometers per hour in a factory environment feels very luxurious.

There were 6 people in the car without any burden.

This shows that the engine is powerful.

A 12-horsepower engine is indeed a bit excessive for such a small thing.

So the next step is to design an engine with smaller horsepower and become a series product.

This time Lu Xingyu didn't go downstairs, he just lay on the second floor window and looked down.

His face was flushed and he was muttering something involuntarily.

Today, people from all workshops came out to see the novelty, and the leaders did not scold them.

Because today is destined to be recorded in the history of the machinery factory, and with luck, it will be recorded in the history of the Republic.

They are all participants and witnesses.

They can get enough benefits from it, and they are all very happy for their original choice.

Because the entire car chassis is too light, the vibration of the engine is very obvious.

Especially when in neutral.

Li Yuan knew that the biggest problem was the engine's counterweighted flywheel.

Because it is just simple processing and no dynamic balance adjustment is performed, it is very normal for the entire engine to vibrate.

In later generations, regular Four Sons shops would perform dynamic balancing adjustments after tire repairs.

It is to stick a small iron sheet on the inside of the wheel hub to adjust the dynamic balance of the tire.

We don't have that condition now, and I don't know if there is a concept of dynamic balance today.

Therefore, everything can only be adjusted manually by Li Yuan.

Since there are no instruments, the adjustment of dynamic balance depends entirely on feel.

Back in the assembly workshop, Li Yuan began to turn the flywheel manually, sensing slight deviations in the rotation of the flywheel.

For a whole week, Li Yuan stayed in the assembly workshop and tried again and again.

Finally on Saturday, I was satisfied with the adjustment.

At this time, the car only felt a slight vibration when idling.

Compared to before, it definitely pales into insignificance.