These things were originally something that Mr. Zhu should have been worried about, but Qin Zhenhua's sense of responsibility and the sense of honor of the Yimai Factory made him consider these things too.
It is still not possible to have only an engine and no qualified transmission system. In many cases, the transmission system is more important than the engine. For many years, China has only been able to use a fixed shaft gearbox, which is the lowest level.
The technology is the most mature and durable, but also the most backward.
For tanks, mechanical operation is outdated. German tanks during World War II had already used hydraulic transmission and used gearboxes. What about our side? We only tried three-hydraulic liquids on the 122 tank prototype for the first time.
The system was immature and oil leaked everywhere, and eventually ended up in vain.
The troops are also well aware of this. For the troops, advancedness is important, but one that is more important than advanced is mature. The troops can use products that are not the most advanced, but must be the most mature and immature.
It is a crime to practice every three days on the battlefield.
Therefore, the troops are the most conservative.
It is important for people to adapt to machines and strictly train to improve their technical level. The troops do not care whether it is a hydraulic transmission system or not, and there will even be some resistance.
After all, when the hydraulic system enters the army, the maintenance personnel of the army must be retrained. Moreover, the operation methods are different, which will give people a sense of strangeness.
The troops are the most xenophobic.
Qin Zhenhua was prepared in this way: even though he had already built a qualified hydraulic transmission system, when he arrived at the army, he was afraid of possible failures, so he gave up and used an ordinary mechanical gearbox.
Now, there are various factors that make Qin Zhenhua consider more and more perfect.
Not only should you have an imported plan, but you also need your own mechanical transmission plan.
Hearing Qin Zhenhua's words, Liu Shibao, the director of the gearbox branch, immediately patted his chest: "This is simple, just enlarge the existing 80 tank gearbox, and ensure it is complete!"
However, Qin Zhenhua shook his head: "No, you can't use the existing plan."
“Why?”
"Because it's too long, there is no future in doing so, and Mr. Zhu will deny it."
Too long?
According to the plan, the third generation tank is a longitudinal engine. The original version of the longitudinal engine will be longer. According to the current plan, it will be about one meter long, which will bring about an increase in weight. Now, it is not just the engine, but also
Need a gearbox?
If it were a longitudinal gearbox, it would be about half a meter longer. The overall design would be overturned and started over again. Mr. Zhu would definitely be cursing.
Of course, Mr. Zhu has been planning a hydraulic transmission now and has not thought about a mechanical transmission at all. Qin Zhenhua is just preparing for the future.
"If we don't need our fixed shaft gearbox, what should we use?" Liu Shibao asked.
We are already working on a hydraulic transmission, and we are familiar with this kind of mechanical transmission.
"I think the T-72's plan is good." Qin Zhenhua said: "We have completely mapped and copied the T-72. From Mr. Zhu, we need the T-72 information to come over. Let's build a double-sided planetary gearbox
the plan.”
The fixed shaft gearbox mainly consists of two shafts, one connecting to the engine and the other output power. These two shafts carry different gears of different sizes, and different speed ratios are obtained by combining different gears.
, the more gears, the longer the thing will be, and the gears are arranged along the axis of rotation.
Planetary gearboxes are different. They use planetary gears, which are a structure that develops horizontally and have great advantages in the need to reduce volume.
This is the solution used by the T-72. There is a 3-degree-of-freedom planetary mechanical gearbox operated by manual hydraulics. It is realized through 4 planetary rows and 6 control parts.
The Bull with 7 forward gears and 1 reverse gear has functions such as steering, braking and cutting off power in addition to changing gears.
Compared with the previous fixed shaft transmission, it not only can adapt to the use requirement of transmitting half of the power, but also greatly improves the transmission performance, and reduces the weight of the transmission device.
After all, the Soviets are also making progress. For our side, if there is a problem with the hydraulic operating system, the solution to change the installation is also very good.
"But the T-72 is a transverse engine, and ours is a longitudinal engine." Wu Ruihua asked. He knew the benefits of this side gearbox, but the two engines have different arrangements, so how can they be used?
"So we need an extra transmission shaft." Qin Zhenhua said with a smile: "Fuck off your pants, but there is no way. Let's do this project first."
There are many things to be arranged, in addition to the third generation tank, there are also Type 85 foreign trade tanks, 88 parade tanks, as well as self-propelled artillery and bomb supply vehicles at the second machine factory. So, after the meeting was over, outside
The sky actually brightened again.
Qin Zhenhua doesn't like to hold meetings in the evening. After all, everyone has been busy for a day, but after coming back, all work must be arranged and no longer delayed. In this way, he fought for another night.
It's better to be young. I lay on the table and slept for a while, and then I felt energetic again. After breakfast, Qin Zhenhua stomped out of the conference room.
Computer Center, Qin Zhenhua attaches most importance to a department that will focus on development in the future. For the development of this department, he also specially purchased a batch of Apple Macintosh computers, which is a multimedia computer, and the focus is on graphics processing capabilities.
Their design in the factory naturally needs to pay attention to the graphics processing capabilities.
Now, when he walked to the door, he deliberately put a special shoe cover on his feet and then walked in.
There was a crackling sound inside. The sound was very familiar and pleasant. It was the sound of a finger quickly typing on the keyboard. At this time, those people were working attentively. This scene made Qin Zhenhua feel very satisfied.
Could it be that they underestimated the difficulty of building a factory-specific database system? As long as they work hard, they can understand it.
With this idea, Qin Zhenhua slowly walked in. Perhaps because everyone here is working seriously and focusing on the situation around him. Perhaps because Qin Zhenhua is wearing shoe covers, he walks very lightly.
In short, without anyone paying attention, he walked up to him and when he saw it on the computer screen, his face suddenly became gloomy.