Chapter 799: Unrealistic ideas

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

If someone else asks this question, the staff may not even bother to answer

it, and just give that person a roll of eyes and it's done.

But it was Chen Xin who asked this question, and the staff must seriously

consider how to answer and explain, so that Chen Xin could understand that

this was impossible and at the same time saved him face.

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

Although the cutter head of the shield machine itself is equivalent to a huge

drill bit, the staff also understood that Chen Xin meant whether the cutter

head in front of the shield machine could be replaced with that kind of

pointed drill.

After all, for many people, the pointed drill bit has a very high efficiency

of drilling holes, so that in many cartoons or some sci-fi works, there is a

kind of big drill bit in the front that can be quickly in the soil. The

tunneling machine exists.

The specific principle is quite wordy to explain, but there is a fairly simple

and easy to understand explanation, that is, if the spiral drill bit is so

easy to use, why don't people use such a drill bit to dig holes?

The answer is naturally very simple, and it is not easy to use, so you don't

need such a drill.

In fact, anyone who has a little understanding of drill bits will find that

most of the front ends of drill bits are basically flat, and there are very

few very sharp drill bits.

This is mainly because the drill bit is usually used to drill hard objects. If

the bit tip is made too sharp, it will easily wear off, which will affect the

service life and effect of the drill bit.

Therefore, most of the drill bits have adopted a head design that is as flat

as possible, made of hard metal to enhance their durability.

The cutter head of the shield machine is actually a rotating mechanism with

grooves. There are a large number of blades installed on it to cut rocks and

soil. Although it can be regarded as a huge drill bit, it does not mean The

cutter head of the shield machine is really a drill.

When the cutter head of the shield machine works underground, it will

encounter a variety of different stratums. The hardness of these different

stratums is different, which causes the force of the cutter head to be very

complicated. It is not a spiral drill bit that works in a uniform medium.

Regardless of the force.

Therefore, the machine with a drill bit at the front end in cartoons and sci-

fi works is only an 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 bit whimsical.

However, his ideas are not entirely impossible. After all, with the system in

hand, Chen Xin can do many things that other people can't do.

Of course, even if there is a system as a backer, Chen Xin will not win

blindly. Now that professionals say that it is not feasible to change the

drill bit, he will not forcefully say that he has to try it.

The most appropriate way is to do an experiment first. Just like the

construction of dome cities and ecospheres, after a few simulation

experiments, you will naturally know whether it is feasible.

After trying to understand this, Chen Xin did not continue to embarrass the

staff, but only told him that he might need a super large shield machine to

perform the task, and then left the factory.

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Back in his office, Chen Xin first imported the shield machine drawing 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.

To put it plainly, the principle of the shield machine is that the front end

is continuously cut, and then a section of the pipe is installed in the

excavated pipe at the back, so as to realize the rapid construction of the

tunnel.

Therefore, what affects the working efficiency of the shield machine is the

cutting efficiency of the front cutter head.

This is also the reason why Chen Xin wanted to replace this cutter head with a

drill bit. In his opinion, the cutting efficiency of the drill bit is

undoubtedly higher than this cutter head.

Although professionals in the factory said it was unlikely, Chen Xin did not

completely give up this idea.

With the idea of giving it a try, Chen Xin first upgraded the drawing of the

shield machine and adjusted it to the form of 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, Chen Xin was disappointed by the result, because the drill bit was

solid. During the underground drilling process, due to continuous cutting and

friction, a large amount of heat was generated and could not be dissipated. In

the end, it was damaged by local high temperature and wear without digging

far.

Obviously, this plan is indeed whimsical and impractical.

Therefore, Chen Xin quickly adjusted his thinking.

Since the drill is impractical, how about adjusting the structure of the

cutter head?

With this idea in mind, Chen Xin upgraded and adjusted the drawing again,

upgraded the original cutter head of the shield machine to a slightly convex

shape in the center, and optimized the structure.

This time the effect is satisfactory. Although the tunneling efficiency has

not been improved much, the adjusted shield machine still successfully

completed the excavation.

This result undoubtedly gave Chen Xin encouragement and at the same time

allowed him to clarify his thinking.

Abandoning the idea of unrealistic drill bits, researched the cutter head

structure and working methods of the shield machine in order to improve its

work efficiency.

The cutter head of the shield machine is mainly used to loosen, crush and dig

out the soil or rock underground. Because of its huge size, its working speed

is not fast, and it can even be said to be slow. UU reading www.uukanshu. 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 cutter head of the shield

machine, but the result was not an increase in work efficiency, but the cutter

head on the same cutter head melted and worn due to the high temperature, and

finally the whole knife The disk is damaged.

This undoubtedly caused Chen Xin a great restriction, making 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 physical laws that should be observed must still be

followed. If Chen Xin cannot perfect a reasonable and feasible solution, then

even a system upgrade is nothing more than a creation. It's nothing more than

an industrial waste with no practical value.

Therefore, Chen Xin must conscientiously conceive a reasonable plan, and at

the same time make a breakthrough in addition to being reasonable, which is

also a very difficult task for him.

In particular, he also needs to come up with a feasible plan as soon as

possible, so that the military can start implementation as soon as possible

and save time.

"Hey, it looks like I'm going to work overtime again!" Chen Xin smiled wryly,

but he didn't feel too frustrated. Instead, he cheered up and went to work.