In addition to mortars, shells are stuffed in from the back of the barrel, and after being stuffed in, the back has to be blocked. This device in the city is the blast bolt.
It blocks the shells in front and naturally has to withstand the pressure of the emitted medicine gas when the artillery fires. This device must be sealed and not only cannot be pushed away by the pressure of this gas, but also ensures that there is no leakage of the emitted gas.
In fact, it doesn't matter if you leak a little bit of air, but what's terrible is that the leaked air must bring flames, so it will be a big trouble. Once it leaks, it will almost end up with a death blow.
The function of the blasting bolt is huge. When it meets the pressure and cannot leak air, it must also be safe and reliable. If the bolt is not closed, the gun cannot be fired, and the bolt cannot be suddenly opened during shooting. At the same time, it must also be filled.
Recovering bullets and launching quickly and easily.
After decades of development of artillery, two types of bulttles have gradually evolved, one is a screw-bulttle and the other is a wedge-bulttle. The screw-bulttle bulttle is generally used for breech loading cannons and wedge-bulttles.
Bolts are generally used for rapid-fire cannons.
Among these two types of bulging latches, screw bulges are the most used. They are like a door. When you pull the bulge, turn the door shaft, pull the bulge to the side, then load, close the door, and turn the bulge latch.
, because there are threads inside the bulge, it is tightened after turning like this.
When fired, the thread bears the longitudinal stress generated by the artillery gas and is completely dispersed. Therefore, it can be made lighter, but because of this thread structure, it is very complicated to make.
The wedge-type blasting bulge is even simpler. It is a baffle. After opening the mechanism, the blasting bulge can automatically fall down and then pull it back after it is loaded.
Because it moves up and down, (some are moving horizontally.) Therefore, when closing the door, there is less chance of squeezing your hands in. This kind of blaster has a simple structure and is easy to operate, but because it is a slider
It is not easy to move, so it is necessary to play a sealing role. It also needs to bear sufficient gas thrust during firing, so this kind of blasting bolt is generally heavier.
In short, one door is convenient to open, and the other door is complicated to open. So, if you want to increase the rate of fire, you have to start by closing the opening of the barrel. This bulge can increase the rate of fire by using a wedge bulge. In theory, this is
.
However, there is no design to use a wedge-type blaster on the 155mm gun. If it is to be modified, it must be safe. I don’t know how many experiments it will take to determine it, so the gun will be
The delivery time has been greatly delayed.
………
"Wow, pyramid!" The car was driving in the desert. When he saw the huge triangular building outside the car, the people inside the car immediately cheered.
After finishing ****'s inspection, the time was approaching the time when the Pyramid Country held an international defense exhibition. So from here, Qin Zhenhua took a bus to the Pyramid Country and encountered this scene halfway.
Looking at the huge buildings, Qin Zhenhua also felt a little moved: "Like the Great Wall in our country, it is also the greatest building. It is a wealth of human civilization."
Qin Zhenhua's words attracted the favor of Srive, a fellow receptionist. Srive nodded and said, "Yes, we have both had brilliant civilizations. Our two countries have too many similarities and great friendships."
, I hope our friendship can continue to develop.”
"That's natural, I came with our friendship." Qin Zhenhua said: "Especially, in the military industry, we have also had successful cooperation."
Speaking of this, both sides smiled at each other and didn't mention anything else.
A few years ago, the political stance of the pyramid countries turned to the Soviet Union, and the army was also a Soviet weapon. However, later, for some reasons, they began to lean towards the West. In this way, most of the Soviet system in their country were
Weapons no longer have the source of components.
So, they decided to eliminate some.
Under this situation, the Eastern Power took action. MiG 21MF and MiG 23 were all secretly transported from the pyramid country to the Eastern Power, which played a great role in promoting the military development of the Eastern Powers.
.
The secret work at that time also fully reflected the friendship between the two sides. Now, Qin Zhenhua comes with friendship.
This is a mysterious land, and can our own weapons and equipment be sold here?
However, when I came here, I not only came to sell arms, but also had some things that I hope could be done.
Thinking of these things, Qin Zhenhua had a lot of thoughts.
In front, there were more and more people, and the outline of a city gradually approached. Compared with the city in the waterless country, it looked a little backward and shabby. The business trips walking on the streets with camels formed a special
landscape.
The car finally stopped in front of a government department.
"This is our International Defense Exhibition Preparatory Office, Mr. Aria is waiting for you inside." Srief said to Qin Zhenhua.
Qin Zhenhua nodded, then walked in.
"Mr. Qin is here, welcome, welcome." After walking in, Mr. Aria came out with a smile on his face.
"Well, I'm just an assistant." Qin Zhenhua said. He had nothing to do with the boss, but when he said this, the other party would never take it seriously. Who doesn't know that Qin Zhenhua is famous internationally and made
Has a lot of business done.
Recently, in Wushui Kingdom, their howitzers have already gained fame.
And when I came here, I was naturally a representative of the Northern Company, and I came here to talk about the International Defense Exhibition.
"We learned that most of the booths you have arranged are indoors, so the products we exhibit will be based on models." After Qin Zhenhua sat down, he communicated with the other party.
Different countries have different national conditions. It is too hot here. It is quite inconvenient for people to exhibit outdoor exhibitions, so the other party decided to make it into an indoor exhibition.
Since it is indoors, the space is limited after all. In this way, if all the weapons are brought over, the space will take up too much.
The model is the main one, and some physical objects are mixed and matched in this way.
Aria nodded: "Of course there is no problem. So, what are you planning to exhibit? We can also determine the area of the booth based on your exhibitions. We are friends, so of course we have to meet the needs of our friends first.