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

If someone else asked this question, the staff might not even bother to answer the answer, so they just rolled their eyes and finished it.

But Chen Xin was asking this question, and the staff must seriously consider how to answer and explain in order to make Chen Xin understand that this is impossible and at the same time save him face.

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

Although the knife plate of the shield machine itself is equivalent to a huge drill bit, the staff also understand that Chen Xin means whether the knife plate in front of the shield machine, which is like a large flat plate, can be replaced with a pointed drill bit.

After all, in the eyes of many people, the drilling efficiency of drilling holes is very high, so in many cartoons or science fiction works, there are machines that can quickly dig in the soil with a large drill bit in front.

The specific principle is quite stingy, but there is a very simple and easy-to-understand explanation, that is, if a spiral drill bit is really useful, why don’t you use such a drill bit to dig holes?

The answer is naturally very simple, and it is naturally not easy to use, so people don’t need such a drill.

In fact, as long as you have a little knowledge of drill bits, you will find that the structural front ends of most drill bits are basically flat, and there are few very sharp drill bits.

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

Therefore, most drill bits are designed as flat as possible, and are made of hard metal to enhance their durability.

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

When the blade of the shield machine works underground, it will encounter various different formations. The hardness of these different formations is different, resulting in very complex stress on the blade. It is not a spiral drill bit that works in a uniform medium and does not consider the stress.

So the machines with drill bits in cartoons and science fiction works are just imagination after all, and cannot be applied to reality.

After listening to the staff's explanation, Chen Xin was naturally a little embarrassed, feeling that his thoughts were a little more whimsical.

However, his ideas were not completely impossible. After all, with the system in hand, Chen Xin could do many things that others could not do.

Of course, even if there is a system as a backer, Chen Xin will not win blindly. Now that professionals say that changing drill bits is not feasible, he will not be tough and say that he must give it a try.

The most appropriate way is to do an experiment first. Just like building a dome city and an ecosystem, do a few simulation experiments, and you will naturally know whether it is feasible.

After understanding this, Chen Xin did not continue to make things difficult for the staff. He just told him that a super-large shield machine might be needed to perform the task, and then left the factory.

When he returned to his office, Chen Xin first entered the shield machine drawings brought back from the factory into his watch, and then projected them out with nanomolecules.

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

To put it bluntly, the principle of the shield machine is to continuously cut the front end, and then the pipe pieces are installed in the excavated pipes, thereby achieving rapid tunnel construction.

Therefore, what affects the working efficiency of the shield machine is the efficiency of cutting the front end cutter.

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

Although professionals in the factory said this was unlikely, Chen Xin did not completely give up on this idea.

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

Then the virtual simulation system was started, 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. During the underground drilling process, a large amount of heat was generated due to continuous cutting and friction, and it was not dug very far and damaged due to local high temperature and wear.

Obviously, this plan is indeed whimsical and not very realistic.

Therefore, Chen Xin quickly adjusted his thinking.

Since the drill bit is not practical, what about adjusting the structure of the cutter plate?

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

The effect this time was satisfactory. Although there was not much improvement in excavation efficiency, the adjusted shield machine still completed the excavation smoothly.

Such a result undoubtedly gave Chen Xin encouragement and also made him clear his thinking.

I gave up the idea of ​​not very practical drill bits and instead studied the cutting wheel structure and working method of the shield machine in order to improve its working efficiency.

The knife plate of the shield machine is mainly used to loosen, crush and excavate the soil or rocks underground. Due to its huge size, it is not fast when working, and it can even be said to be slow.

After all, if it is too fast, the heat generated by the friction is also amazing.

Chen Xin tried to double the rotation speed of the shield machine cutter wheel, but the result was not an improvement in working efficiency, but the head of the same cutter wheel melted and worn due to high temperature, and eventually the entire cutter wheel was damaged.

This undoubtedly caused great restrictions on Chen Xin, making him need to think about more appropriate solutions.

Although system upgrades can do things that cannot be done under normal circumstances, the basic physical laws that should be followed must be followed. If Chen Xin cannot improve a reasonable and feasible solution, even if the system upgrade is to create an industrial waste without practical value.

Therefore, Chen Xin must seriously conceive a reasonable plan and make breakthroughs while being reasonable, which is also a very difficult thing for him.

In particular, he also needs to come up with feasible plans as soon as possible so that the military can start implementation as soon as possible and save time.

"Oh, it seems that I have to work overtime again!" Chen Xin smiled bitterly, but he was not too frustrated. Instead, he was excited and devoted himself to work.
Chapter completed!