That's great!

It's just wonderful!

Wang Buan's proposal simply saved his life!

Finally, I don't have to pay for that stupid half a million dollars. It's finally relief. At night, I was finally able to fall asleep.

He secretly swore that he would never gamble with anyone again. In particular, money must not be involved.

This $500,000 is simply his life!

"You get Mike's approval. ”

"You gain 250,000 Faith Points. ”

Wang Buan was a little surprised.

Foreign devils actually have faith values?

It's still 250,000 or so much? I thought that only the Chinese had it.

Meddlesome.

Definitely a good thing.

After surrendering to a few foreign devils, the faith value will also skyrocket.

For the sake of 250,000 faith points, the 500,000 dollars...... Of course, you can't let go. Next time, I want this kid to return it with interest.

If you owe me money to harmless Wang Buan, how can you get away with it easily?

The absence of interest is already a great gift.

"What are you talking about?" Jiang Dong's voice came from afar.

"I'll go first. Mike hurriedly took his leave.

"What is this kid doing here?"

"Let's talk about business. ”

"What business?"

"Confidentiality. ”

Wang Bu'an smiled inscrutablely.

Jiang Dong shook his head and didn't bother to ask. He stays at the construction site all year round, so he doesn't care about the wind and rain outside.

"What are you going to do?"

"Mr. Wan asked me to come. ”

However, Jiang Dong had been authorized by Wan Chaoyang to negotiate with Wang Buan on the purchase of the excavator.

Judging by the quality that has been shown so far, it is very good.

Especially the cost of fuel.

It's almost zero cost. It's an irresistible temptation.

Wan Chaoyang decided to purchase the first batch of 100 units.

"So little?" Wang Bu'an said, "For you, it's a bit of a small family." ”

"There will be more and more in the future. Jiang Dong said, "Everything has to be done step by step, step by step, isn't it?"

"That's right. Wang Buan nodded thoughtfully.

After all, the Western Construction Corporation itself is also very large, and it has a very large number of construction machinery, and it is impossible to replace it all at once.

But in the end, Xijian will definitely replace all the construction machinery.

No one can stop this zero-cost temptation.

Liang Penghai this time, absolutely not in vain.

The market for Xijian was opened. Then many groups such as East Construction, South Construction, North Construction, and China Construction will definitely not be able to sit still.

It is estimated that the Panshi 150 diesel engine will soon be in short supply.

Jiang Dong said again: "Mr. Wan hopes that you will replace the hydraulic system, motor or anything with domestic ones." It is best that all parts are domestic. But to guarantee the quality. ”

Wang Buan said lightly: "There is no problem. It's done in six months. ”

That's exactly what he's going to do next.

To be exact, it is what Qianzhou Heavy Industry needs to do.

Now that Liang Penghai has opened the market for construction machinery, it is natural to firmly grasp it.

He has raw materials, technology, and the poor is just a factory.

Studying the ...... of hydraulics

Research on powerful motors......

"I have more important things to do. Jiang Dong said.

"What's the matter? Wang Buan nodded.

Jiang Dong took out a thick pile of drawings.

The drawings are densely marked with a lot of parts, and at first glance they look like super-large machines.

On the surface, the drawings are already a little yellowed.

I guess it's been some years.

"What's that?"

"Shield machine. ”

"What do you mean?"

"He wants you to help us build a shield machine in the west. By the way, give Spencer a little color to see. Doesn't he have a three-year covenant with you?"

"yes!"

"What construction machinery are you going to rely on to defeat Caterpillar?"

"Isn't the excavator good?"

"Are you completely uninterested in EPBs?"

"I'll see. ”

Wang Buan slowly took the drawings.

The drawings are marked on them. This is a drawing drawn up by the Western Construction Corporation five years ago.

This is a TBM with a diameter of 18 meters.

In terms of data alone, it can almost be called the world's first.

The designer of the drawings is a man named Yan Sen.

A very awesome name.

Even Wang Buan, a layman, knows it.

Why?

Because when he died, obituaries were published all over the country.

In the field of construction machinery, Yan Sen can definitely be regarded as Taishan Beidou. Academician of the Chinese Academy of Engineering. Member of the Academy of Sciences. Leader of several mega projects.

"It's a pity that Professor Yan passed away two years ago. Jiang Dong said regretfully.

"Why don't you hand over the drawings to someone else?" asked Wang Bu'an casually.

"No one else can do it with such a large diameter. ”

"Oh. ”

Wang Bu'an nodded thoughtfully.

It seems that Wan Chaoyang still thinks more highly of himself. If you have a problem, you still throw it into your own hands.

Of course, this can also be seen as a test of Wan Chaoyang.

If you do a good job, you will naturally gain the trust of Xijian.

But if it is messed up, it will smash his Wang Buan's signboard. It will affect other construction machinery.

Of course, Wang Buan hopes to do a good job.

However, this matter really needs to be considered in the long run.

Why?

Shield machine, super construction machine!

There are only a few manufacturers in the world that can produce shield machines. There are only two domestic ones. It has not yet seized the high-end market.

In fact, the market size of shield machines is very large.

Many large-scale projects require shield machines.

As long as it involves tunnel construction, such as railways, highways, subways, etc. All need to use a shield machine.

If the geological conditions of Gulan Mountain are slightly better, the shield machine will also be used.

Unfortunately, the geological conditions were too poor for the EPB to be used.

However, the technical requirements of the EPB are also very high.

The first is the drill bit.

Drill bit arrays, to be exact.

In front of the shield machine, there are not one or two drill bits, but a combination of hundreds of drill bits.

How are hundreds of drill bits arranged and distributed?

How to drive?

How is it coordinated?

It's all very advanced craftsmanship.

If you don't do it well, you will affect each other and reduce work efficiency.

The quality of the individual drill bits is also important.

It's not uncommon to encounter hard stones. For example, granite or something.

If the strength of the drill bit is not enough, the loss will be serious.

The size and style of the drill bits are not the same.

There is a main drill bit.

There are auxiliary drill bits.

The size of the main drill bit can be quite large. It is the main force of tunneling.

The role of the auxiliary drill bit is mainly to clean the corners that the main drill bit cannot reach. Or it is a side knock to provide a good construction environment for the main drill bit.

The styles of drill bits include auger drills, flat drills, twist drills, step drills, flat wing drills, and three-pointed drills......

Just the manuals of various drill bits can be written into a book.

Big Sixteen Open. More than 500 pages.

The second is the hydraulic system.

A drill bit requires a set of hydraulic systems.

How many drill bits you need, how many sets of hydraulic systems are needed.

Finally, all the hydraulic systems need to be centrally controlled by a central hydraulic system.

How to set it up?

How is it coordinated?

How to unify?

It's not clear in a sentence or two.

If you are just getting started, you will need to gather hundreds of people and spend several years studying the relevant materials.

Again, the motor.

A drill bit requires a drive motor.

As many drill bits as there are, as many drive motors as there are.

There are two types of drill bits: main drill and auxiliary drill. Of course, there is also a difference between the main motor and the auxiliary motor of the drive motor.

The power requirements of the main motor are very large, and the force is overwhelming.

The power requirements of the auxiliary motor are economical. That is, to save energy as much as possible.

Again, reliability and stability.

There are too many components of the EPBM. Problems are inevitable.

The key is the time to deal with failures. The sooner the better.

It's best not to fail.

"What do you want?" asked Wang Bu'an quietly.

"The price of each unit cannot exceed 50 million yuan. Jiang Dong said bluntly.

"Big brother, this is an 18-meter-diameter shield machine!"

"yes, I know it's 18 meters!"

"This is the largest shield machine in the world. ”

"Yes!

"You ......"

Wang Buan slowly put down the drawings of the shield machine.

Diameter 18 meters......

Offer 50 million ......

I have to say that Wan Chaoyang's pricing is a bit difficult.

The existing shield machine brands are mainly from Germany and Dongying. The German shield machine is the cheapest, and one is more than 50 million yuan. The shield machine from Dongying is the cheapest, and the price of each unit is more than 30 million yuan. The price of domestic shield machines is generally between 20 million and 30 million.

However, the diameter of these TBMs is basically less than 10 meters.

10 meters and 18 meters are completely different concepts.

An 18-meter EPB machine costs at least twice as much as a 10-meter machine.

To say that among all the construction machinery, the highest technical content and the most complex structure are shield machines.

Modern shield boring machine integrates light, machinery, electricity, hydraulics, sensing, and information technology, and has the functions of excavating and cutting soil, conveying soil ballast, assembling tunnel lining, and surveying and guiding deviation correction, involving geology, civil engineering, machinery, mechanics, hydraulics, electrical, control, surveying and other disciplines and technologies, and it is necessary to carry out "tailor-made" design and manufacturing according to different geology, and the reliability requirements are extremely high.

On a construction site, there is basically only one EPB in operation. There is no rotation.

If the EPB fails, the site is about to stop.

No builder wants such a breakdown and shutdown.

Every minute is lost money.

In the past year, more than 1,200 EPBs have been produced worldwide, with a total value of more than $12 billion.

In other words, the average price of each EPB is more than $10 million.

Multinational companies not only produce complete EPBs, but also sell a variety of key components.

For example, Mitsubishi Heavy Industries, Kawasaki Heavy Industries, and Komatsu Manufacturing Co., Ltd. of Toei. Herrenknecht in Germany, Robbins in the United States, Lofurt in Canada, etc.

They all have their own advantages in terms of power, hydraulics, motors, drills, and software control.

A shield machine needs to be composed of all aspects.

Wan Chaoyang's first thing is motivation.

It used to be said that when the train rang, there were ten thousand taels of gold.

Now it's a sound of the shield machine, and the gold is ten thousand taels.

Why?

The energy consumption of the shield machine is also very high.

If this cost can be saved, it will occupy a huge advantage in the project grabbing in the future.

Does Qianzhou Heavy Industry have such technical strength?

Today's fourth watch is here. In the new week, referral tickets are important. Ask for a little referral vote.