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Any vehicle needs to have shock absorption, otherwise, if it is directly rigidly connected, the vibration of the ground will be transmitted to the car body, and the people inside will not be able to stand it.

Take the car as an example, the truck uses leaf springs, which are quite hard and uncomfortable to ride, and the van is also such a suspension, while the sedan, the low-level use of the overall suspension, the high-level use of independent suspension, the ride is quite comfortable, especially millions of high-end cars, the use of air suspension, do not slow down when passing the speed bump, you can see that the car body is as stable as Mount Tai.

On the tank, the suspension has also undergone many improvements, the original World War I and World War II period, the use of large coil spring suspension, once also popular, but too space-occupying, so in the later period, after the continuous progress of the suspension, the main use is the torsion bar suspension.

Speaking of which, it is slightly similar to the torsion beam suspension, a torsion bar across the car body, both sides of each direction, stretching out the bend of the two cranks, and then, when encountering bumps, the load wheel will drive the crank, tighten the torsion bar, and use the elasticity of the torsion bar to absorb shock.

From the Second World War period, until now, the main suspension method of the tank is this, even the most advanced Leopard-2 tank, with a torsion bar suspension, as for the more advanced than the torsion bar suspension, that is, gas-liquid suspension, there is a gas-liquid action cylinder on each wheel, used for shock absorption, although this way looks very advanced, but the processing is very difficult, the original three-liquid sample car, with this kind of suspension, soon declared a failure, oil leakage is an unsolvable problem.

The 321 chassis is also a normal torsion bar suspension, but because the front and rear two load wheels are too far apart from the middle load wheels, the front and rear load wheels are too far apart, so the front and rear load wheels are too big when they are bumpy, which will pose a serious challenge to the torsion bar.

Now, Wang Erzhu has seen this problem.

"You can't just increase the strength of the torsion bar because it's going on too much." Qin Zhenhua said: "We have to find another way, I suggest, in these places, add two pairs of hydraulic shock absorbers. ”

If you can't just use a torsion bar, you have to go on a hydraulic shock absorber and solve the problem in two ways.

The big guys sat together, studied the drawings for three or four days, made technical improvements, and put forward more than 100 pieces, which were recorded, and then, after the detailed design, after completion, the prototype chassis prototype could be built.

At the same time, the process of building a new automobile branch of a machine factory has also been handled, and after the approval procedures, a groundbreaking ceremony was held for a brand-new modern factory on the grassland, and the construction officially began.

This project of the No. 1 machine plant is noteworthy, after all, the current No. 1 machine plant, there are no civilian products coming out, they can improve on their existing factories, but the 69-2 tank orders from the desert area have already made their factories spin up, and they simply do not have the extra capacity to do this, so they can only be carried out by building new factories.

In China, this is the first time that without state investment, a factory itself has to invest in a new workshop, and for this reason, a machine factory even borrows a large number from banks, which requires great courage.

The outside world is very concerned about this big move of a machine factory, but what is most concerned is the project of a 10,000-ton forging press to be launched by a machine factory!

"Qin, there are too many problems here." Mia put on the overalls of a machine factory, and she looked very bright, and at this time, she was looking at everything in front of her energetically.

There are many difficulties to overcome in the manufacture of this 10,000-ton hydraulic press, according to the plan, this is a four-column and three-beam structure equipment, among them, three beams, is a huge iron lump.

Now, to process these beams, it is necessary to have a working surface that is 10 meters long and 8 meters wide.

There is no planer of more than ten meters in China, and now, what the big guy uses is the new method proposed by Qin Zhenhua!

Five mobile milling machines have been moved to the beam processing site, and everyone needs to use these mobile milling machines to process together.

"yes." Qin Zhenhua said: "We have a saying that the wisdom of workers is endless. We, the workers, are to give full play to the subjective initiative of the workers. ”

"Well, let's get started."

Five mobile milling machines, is controlled by five of the most skilled workers, among them, the most critical middle three milling machines, is Qin Zhenhua, Mia and Wang Erzhu three people to operate, once the start of operation, then, a few days and nights, can not close the eyes, must be a breath of successful operation!

The milling machine is running, and the metal wires are cut out, and then they are taken away, and more metal wires are cut out, and the huge steel ingots, little by little, deform, deform.

Since it is five milling machines working together, the place where the five milling machines are handed over is the most technical test, and they are careful about cutting the seams.

Fifty-three knives flew in the air, the day passed, and at night, they ate simple cans, red eyes, gritted their teeth and continued to hold on.

The next day, the third day, by the evening of the third day, only the last knife remained!

Qin Zhenhua carried dozens of kilograms of knives, up and down the workpiece, looking for the right angle, at this time, although the big guys were quite tired, but they were still shrouded in great excitement.

Finally, the final cut is complete! The first beam, successfully processed!

Mia's body was also very tired, but looking at this processed beam, Mia's eyes were still full of amazement: "I really didn't expect that this kind of large workpiece can be done in this way!" It's unbelievable, it's a miracle! I've never seen one in Germany! ”

"Yes, it is impossible for Germany to have an eight-hour workday, how can they fight day and night for three days like this." Qin Zhenhua said: "Only we hard-working people in the East will have such dedication. ”

Qin Zhenhua is not wrong, in the West, the initial process of primitive capital accumulation has passed, and they have begun to enjoy a good life, to say overtime? No kidding, they don't care how much they give, the union will protect them.

Therefore, they lived a very comfortable life, and in this comfortable life, they were surpassed by the laborers who fought day and night in the big eastern countries.

Labor is the most glorious!