Without hard work, there will be no harvest. It takes years of hard work to bear fruit in the technical field.
In terms of traditional tank systems, the West had already adopted automatic transmissions a long time ago. This not only greatly reduces the labor intensity of tankers, but also brings many technological breakthroughs.
For example, during World War II, the German Tiger tanks often turned a center, quickly turning the vehicle body, helping the muzzle to the target position faster, and achieving the target of firing as soon as possible.
In World War II, Germany used a dual-flow transmission system. The tracks on both sides of the tank can be reversed to achieve the goal of rotating around the center of the tank. This is of practical significance: when the target is discovered, the tank turret needs to be rotated as soon as possible
, If the turret rotates too slowly, the vehicle body can be rotated together, thereby accelerating the rotation speed of the turret.
After World War II, many Western tanks began to use hydraulic transmission. Unfortunately, the tanks of the Eastern powers that have been on the Soviet route did not have such complex hydraulic transmission solutions, but used the traditional three-plate and three-pole.
Although this operation method is simple and reliable, it can no longer meet the needs of tankers.
As early as when the 122 tank prototype was made, the first machine factory started to use hydraulic transmission. Unfortunately, the tall three-hydraulic tank was finally considered inappropriate. There were too many technical defects, and they were slept every few days.
Later, Qin Zhenhua also came into contact with surveying and mapping tasks, which laid the foundation for the hydraulic transmission system of the Eastern powers.
When the third generation of tanks were used, in order to complete the technical indicators faster, they planned to consider introducing the LSG3000 hydraulic transmission system of German ZF. This system was a failed product for bidding for the Leopard-2 tank, so it was taken out by the Germans and in the world.
To promote within the scope, the Eastern powers not only need to introduce products, but also technology to achieve breakthroughs in this area.
At that time, the negotiations were for a long time, but unfortunately, due to the special political environment at that time, the introduction failed in the end.
The failure of the introduction brought many problems. Not only did its third-generation tanks have no transmission system, but it was also impossible to provide supporting foreign trade tanks. Khalid tanks are struggling step by step, which is directly related to the engine and the gearbox.
It also has a lot to do.
At that time, in order to complete the third generation of tanks, the R&D personnel decided to adopt a mechanical planetary transmission system improved from the T-72 tank. Although it has made great progress compared to the previous fixed shaft type, it is still just a replacement.
The researchers have not forgotten their shortcomings in this regard and have been working tirelessly. Finally, now, this new transmission system has been equipped with the conditions for loading the vehicle.
In fact, it is not difficult to design it, the difficult thing is the process. In the past, when I disassembled this kind of transmission system abroad and saw the complex oil circuit inside, I could know how difficult it was to copy it, and the processing technology requirements were also
It is very strict. Over the years, the transmission branch of the first machine factory has been developing this kind of technology.
In addition to hardware problems, there is also software problems. This kind of gearbox is automatically shifted and requires a computer to switch gears. So, at what time and what gears to switch to, there needs to be a computer to judge.
The software system of this computer is also very critical.
"Director Qin, this is the sample we have developed at present." Under the leadership of Liu Changjiang, Qin Zhenhua came to the transmission branch and saw the transmission system that had been developed.
"This is a dual-flow transmission system. Through the front transmission gear, the power reaches the coaxial torque converter with automatic locking function, and then passes through the planetary gearbox and crowds the planetary rows, thereby achieving the output of the power. The heat inside is very high, and there is
2 special cooling fans, auxiliary hydraulic pumps and other components. When we were developing, we used our own engine as the installation object, so we designed special connecting components, so our transmission device and engine form a whole.
, fixed on a three-point frame, convenient for overall lifting in the wild."
"This system has six forward gears and three reverse gears, but because of the same transmission ratio, we only use five forward gears and two reverse gears to match our 1,500-horsepower diesel engine
, it can completely allow our tanks to gain powerful power. We expect the maximum speed to reach 70 kilometers per hour. Our tanks and maneuverability are definitely not bad compared to Western tanks."
"In terms of steering system, we have developed independently. The hydraulic mechanical stepless steering machine we use is the biggest feature of which is that it requires a small power. As long as one-third of the power of the pure hydraulic steering machine, it will be
It can complete the steering action. After all, there are still problems with our domestic high-power hydraulic steering machines, so we took a shortcut."
There are still many shortcomings in these aspects in China. High-power hydraulic motors are a difficult problem, and the same is true in the aviation field. Dassault's deck wing aircraft can control the rudder surface by using just a small hydraulic motor.
However, if introduced in China, it would not be able to produce such high-power hydraulic motors at all, and it would not be possible to imitate them.
There is no way, so you have to find a way. Because there are technical problems with high-power hydraulic motors, you can simply set up a mechanical hydraulic steering machine to solve the problem. Moreover, like in the West, this kind of steering machine adopts
The steering handle is similar to the steering wheel to operate, and it is much easier than the previous operating lever. This is the truly modern tank transmission system.
"What level does our hydraulic machinery integrated transmission system reach?" Qin Zhenhua asked.
"If compared with other products in the world, it should have reached the level in the early 1990s." Liu Changjiang continued. There are shortcomings in this regard in China. Everyone knows that now, the gap has been raised to ten.
Years are already very difficult.
"Yes, specifically, it's similar to the color SM-500 used by Leclerc tanks. Now, the worst thing is loading test."
In the past few years, when supporting Khalid tanks, the technicians from the first machine factory also came into contact with a lot of tank engines and transmission systems, including German, British, and French. So, now they are also in contact with them.
Can you know what level you are at.
"Okay, then next, I will get a tank and modify it and test it!" Qin Zhenhua said.