After receiving this project, the people at the Mercedes-Benz heavy truck factory were also quite interested, but after some calculations, they found that the problem was very big.
"We originally planned to use the same plan as the crane to put the legs around, but after calculation, when the cannon fires, no matter how the car's beam is strengthened, the recoil will completely smash the car's beam at the moment of fire.
Bend." Mia said.
The tires must not be able to withstand the recoil from the artillery firing, so the plan here is to put four legs around like a crane to let the tires get off the ground, so that the legs can withstand the recoil from the launch.
However, after calculation, I found that this would not work. The recoil force of the cannon fire was too high. Since it was mounted on the car, it would just hit the car's beam. The strong recoil force would make the car's beam bended.
No matter how much it is strengthened, it won’t work!
Thinking of this, Mia felt a little discouraged. She moved the cannon into the car. This is a whimsical plan!
"We cannot accept the solution of using hydraulic outriggers." Qin Zhenhua said: "Under this solution, the time for expansion and evacuation is too long and does not meet our positioning. It is even slower than the vehicle with a track chassis.
It also needs to be completed in one minute, not too slow.”
If the four legs are spread out, it will take too long to meet the actual combat needs and will eventually become useless.
The track chassis relies on the shoe belt to bear the recoil of the vehicle body. At the same time, the entire vehicle body is welded with armored steel, which is integrated and can be used to withstand sufficient recoil.
However, cars are not good. The main component of the car's stress is the beam. Even the Mercedes-Benz Heavy Truck is most proud of is this kind of beam with a variable cross-section, which is only used for transportation, not to resist the recoil force of artillery firing.
, local reinforcement is not possible.
Now, everyone is thinking about this heavy truck chassis.
Truck cannons are still a new thing. When designing, everyone follows the simplest principle. The most convenient way to carry a 122mm howitzer onto this car is of course the barrel is facing backwards and the gun body fixing device of the cannon
, directly install it on the frame, so that the barrel is backward is the most convenient.
At the same time, it is hidden before firing. After firing, you need to run away. You must run backwards. Entering the position backwards and running after firing is definitely the most convenient solution.
However, the arrangement of this plan allows the recoil of the artillery to point to the beam at the rear of the cab, which is the least strong.
How to solve it?
The engineers of Mercedes-Benz heavy trucks have already thought about strengthening the beam, but no matter how hard it is to strengthen it, it is not enough! After all, that part is hanging in the air.
"Our cannons, the main fixing method is the large frame. At the same time, in order to prevent backlash, there is also a structure of helping hoe shovels. Can we think of putting this structure on the truck cannon?" Lin Zhu at this time
, suddenly spoke.
In order to reduce the recoil of the cannon, designers from all over the country are thinking of ways. There are two most important ways. One is to gradually increase the resistance to the cannon barrel when it is back seated, so that it can stop it.
, then return the machine to push the barrel back to its original position.
Another is the auxiliary hoe shovel, also known as the station plow. As the name suggests, it looks like a plough used by a farmer, but it is just backward. In this way, after reaching the launch position, put down the station plow and fix it. The artillery is in
After firing, the gun body will react backwards. Then, you can use this auxiliary hoe to poke it into the soil hard, thereby fixing the cannon and preventing the position of the cannon from changing due to recoil during firing, affecting the shooting elements.
When the truck cannon is fired, a big problem is that the body of the car will shake, which will affect the accuracy of the shooting target. If it is fixed to the ground, it will be fine.
Lin Zhu's statement immediately reminded Qin Zhenhua that a flash of inspiration flashed in Qin Zhenhua's mind.
"I think we can change the plan." Qin Zhenhua stepped over and pointed to the beam behind the cab and said: "We are here to add an obliquely downward hoe shovel, or it can also be a way to outstretched legs.
In this way, when the cannon fires, the recoil comes and is transmitted to the auxiliary hoe shovel, so there will be no problem with the car beam!"
The beam is empty, so no matter how hard the beam is strengthened, it cannot withstand the recoil force of the artillery firing. If this is the case, a pin rod is added to the back and directly pushed to the ground, it will be a hard connection. In this case
When the recoil is directly directed to the ground, you don’t have to worry about problems with the car beam.
"Qin, you're right." Miya's eyes lit up as well.
It is necessary to have German participation because the chassis belongs to others. If you want to calculate various data, you have to do it through the other party. However, as for whether it will cause leakage, Qin Zhenhua did not consider so much, and it was just a mediocre person who disturbed him.
In the military industry, there has never been a respect for patent rights. If I can build it, I will build it. What kind of patent rights do you say is useless.
Once the installation position of this hydraulic hoe shovel like this side is suitable, the truck cannon can be successfully launched. Then, there will be a group of followers soon. Unless it is never announced to the public, that is, it is not used, so it is naturally impossible.
Yes.
Anyway, the outside world will know that, so if we can speed up the progress of our own work with the Germans here, why not do it?
"If you carefully design the position so that the cannon's recoil is transmitted in this direction, then I think other brackets can be omitted, which can greatly improve the rapid response ability. After arriving at the destination, the gunner needs to aim.
By measuring the shooting elements, the auxiliary hoe shovel can be placed directly in this process, so that the transition time between the marching state and the combat state of the truck cannon will not exceed 1 minute. It can fully meet practical requirements."
"Yes, I think you can try it!" Mia's chest was undulating, showing that her heart was constantly waving at this time.
As an engineer, when you see those exquisite industrial products, you will be amazed by the designer's clever ideas. What about now? Now, what Mia sees is another exquisite design plan.
After solving the problem, Qin Zhenhua is indeed amazing!
But she didn't know that at this time, another bolder idea was still surging in Qin Zhenhua's mind. If the cannon was turned 180 degrees, then could the entire cannon's rear seat be directly touched to the ground.
?
If this plan can be done, the 152mm cannon can also be installed!
However, this is a future matter. You have to eat the food in one bite. Now let’s solve the problem in front of you first!