Doomsday Bunker Upgrade Chapter 696: Unrealistic thoughts

Can the cutter head of the shield machine be replaced with a drill?

If someone else asked this question, the staff may not even bother to answer, just give that person a blank eye and it's over.

But it was Chen Xin who asked this question, and the staff had to seriously consider how to answer and explain it, so that Chen Xin could understand that this was impossible and at the same time save him face.

However, even so, in the eyes of the staff, the idea is still impossible.

Although the cutter head of the shield machine itself is equivalent to a huge drill bit, the staff also understands that Chen Xin means that the cutter head that looks like a large flat plate in front of the shield machine can be replaced with that kind of pointed tip drill bit.

After all, in the eyes of many people, the efficiency of drilling holes is very high with the pointed drill, so that in many cartoons or some science fiction works, there is a kind of drill that can be drilled with a large drill in front of it. There are machines that dig fast in the soil.

The specific principle is quite complicated to explain, but there is a fairly easy-to-understand explanation, that is, if the spiral drill is so easy to use, why don't everyone use such a drill to dig holes?

The answer is also very simple, of course, it is not easy to use, and everyone does not use such a drill.

In fact, anyone who has a little knowledge of drill bits will find that the front end of most drill bits is basically flat, and there are very few very sharp drill bits.

This is mainly because the drill is usually used to drill hard objects. If the tip of the drill is too sharp, it will easily wear off, affecting the service life and effect of the drill.

As a result, most drill bits are designed with the flattened head possible and are made of hard metal to increase their durability.

The cutter head of the shield machine is actually a rotary mechanism with grooves, and a large number of blades are installed on it to cut rocks and soil layers. Although it can be regarded as a huge drill bit, this It does not mean that the cutter head of the shield machine is really a drill.

When the cutter head of the shield machine works underground, it will encounter various strata. The hardness of these different formations is different, resulting in a very complicated force on the cutter head. work, regardless of stress.

So the machines with the front end of the drill in cartoons and science fiction works are only imaginary after all, and cannot be applied in practice.

After listening to the explanation from the staff, Chen Xin was naturally a little embarrassed, and felt that his ideas were a little whimsical.

However, his ideas are not impossible. After all, with the system in hand, Chen Xin can do many things that others cannot.

Of course, even if there is a system as a backer, Chen Xin will not win blindly. Since professionals say that changing the drill is not feasible, he will not insist that he must try it.

The most appropriate way is to do an experiment first. Just like the construction of the dome city and the ecological circle, do a few simulation experiments, and you will naturally be able to know whether it is feasible.

Understanding this, Chen Xin did not continue to embarrass other staff, but left the factory after telling him that a super large shield machine might be needed to perform the task.

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Back in his office, Chen Xin first entered the shield machine blueprint he brought back from the factory into his watch, and then projected it with nano-molecules.

Looking at the shield machine model projected in front of him, Chen Xin studied the model while thinking about how to upgrade it.

The principle of the shield machine is that the front end is continuously cut, and then the segments are installed into the excavated pipeline at the back, so as to realize the rapid construction of the tunnel.

So what affects the working efficiency of the shield machine is the cutting efficiency of the front-end cutter head.

This is also the reason why Chen Xin wanted to replace this cutter head with a drill before. In his opinion, the cutting efficiency of the drill is undoubtedly higher than this cutter head.

While the professionals at the factory say it's unlikely, Chen Xin hasn't given up on the idea entirely.

With the idea of ​​giving it a try, Chen Xin first upgraded the drawing of the shield machine and adjusted it into a form with a large drill at the front end.

Then started the virtual simulation system, intending to simulate and test the situation of this structure in actual use.

However, the result disappointed Chen Xin, because the drill bit was solid, and during the underground drilling process, due to continuous cutting and friction, a lot of heat was generated and could not be dissipated. damage.

Obviously, this solution is really whimsical and impractical.

Therefore, Chen Xin quickly adjusted his thinking.

Since the drill is impractical, what about adjusting the structure of the cutter head?

With this idea in mind, Chen Xin upgraded and adjusted the drawings again, upgraded the original cutter head of the shield machine to a shape with a slightly convex center, and optimized the structure.

This time the effect is quite satisfactory. Although there is not much improvement in the driving efficiency, the adjusted shield machine still successfully completed the excavation.

Such a result undoubtedly encouraged Chen Xin, and at the same time made him clear his mind.

Abandoned the idea of ​​an impractical drill bit, and turned to research on the cutter head structure and working method of the shield machine, in order to improve its working efficiency.

The cutter head of the shield machine mainly loosens, crushes and excavates soil or rocks underground. Because of its huge size, its working speed is not fast, and it can even be said to be slow~IndoMTL.com~ After all, if it is fast, the heat generated by the friction is also amazing.

Chen Xin tried to double the rotation speed of the shield machine cutter head, but the result was not an increase in work efficiency, but the melting and wear of the cutter head on the same cutter head due to high temperature. Eventually the entire cutterhead was destroyed.

This undoubtedly caused a great restriction to Chen Xin, which made him need to think about a more suitable plan.

Although the system upgrade can do things that cannot be done under normal circumstances, the basic laws of physics that should be observed must still be observed. If Chen Xin cannot perfect a reasonable and feasible solution, even a system upgrade will only It's just an industrial waste with no practical value.

So Chen Xin must conscientiously come up with a reasonable plan, and at the same time make breakthroughs while being reasonable, which is also a very difficult task for him.

In particular, he needs to come up with a feasible plan as soon as possible, so that the military can start implementing it as soon as possible and save time.

"Hey, it looks like I'm going to work overtime again!" Chen Xin gave a wry smile, but he didn't feel too depressed, but after getting his spirits up, he went to work.