Chapter 238: Shield machine

Great!
Simply great!
Wang Bu'an's proposal simply saved his life!
Finally there is no need to pay for that stupid half a million dollars. It was finally liberated. At night I can finally fall asleep.
He secretly swore that he would never gamble with others again. Especially money cannot be involved.
This half a million dollars is simply his life!
"You got Mike's approval."
"You get 250,000 faith points."
Wang Bu'an was a little surprised.
Foreign devils actually have faith points?
It's still as much as 250,000? I thought that only Huaxia talents have it.
Good thing.
It's definitely a good thing.
After surrendering to a few foreign devils, the belief value also skyrocketed.
Seeing the value of 250,000 beliefs, that half a million dollars...Of course, you can't let go. Next time I want this kid to pay back with the profit.
How can I get away easily if I owe money to my harmless Wang Bu'an?
The absence of Ligunli is already a great gift.
"What are you talking about?" Jiang Dong's voice came from a distance.
"I'm leaving first." Mike hurriedly left.
"What is this kid doing?"
"Talk about business."
"what business?"
"Confidentiality."
Wang Bu'an showed a mysterious smile.
Jiang Dong shook his head and was too lazy to ask. He stayed on the construction site all year round, regardless of the wind and rain outside.
"What are you doing here?"
"Mr. Wan asked me to come."
However, Jiang Dong has obtained Wan Chaoyang's authorization to negotiate with Wang Bu'an about the purchase of the excavator.
Judging from the current performance, it is very good.
Especially fuel costs.
It's almost zero cost. This is an irresistible temptation.
Wan Chaoyang decided to purchase one hundred units in the first batch.
"So few?" Wang Bu'an said, "For you, it's a bit petty."
"There will be more and more in the future," Jiang Dong said, "everything has to be done step by step, step by step, right?"
"That's right." Wang Bu'an nodded thoughtfully.
After all, the Western Construction Corporation itself is also very large and owns so many construction machinery that it is impossible to replace it all at once.
But in the end, Xijian must replace all construction machinery.
No one can stop this zero-cost temptation.
Liang Penghai did not come in vain this time.
Xijian's market opened. Many groups such as Dongjian, Nanjian, Beijian, and Zhongjian will certainly not sit still.
It is estimated that the Panshi 150 diesel engine will soon be in short supply.
Jiang Dong said: "Mr. Wan hopes that you will replace hydraulic systems and motors with domestic products. It is best to make all the parts domestically. But the quality must be guaranteed."
Wang Bu'an said lightly: "No problem. It will be done in six months."
This is exactly what he wants to do next.
To be precise, it is what Qianzhou Heavy Industry needs to do.
Since Liang Penghai has opened up the construction machinery market, he naturally has to firmly grasp it.
He has raw materials and technology, and the only thing he has is a factory.
Research hydraulic systems...
Research on powerful motors...
"I have more important things." Jiang Dong said.
"What's the matter? Please tell me." Wang Bu'an nodded.
Jiang Dong took out a thick pile of drawings.
The drawings are densely marked with many parts, which at first glance is a super large machine.
On the surface, the drawings are already a bit yellowish.
It is probably some years.
"what?"
"Shield machine."
"What do you guys always mean?"
"He wants you to help us study the shield machine at Xijian. By the way, give Spencer a little bit of color. Didn't he and you have a three-year agreement?"
"Yes!"
"What construction machinery are you going to rely on to defeat Caterpillar?"
"Can't an excavator work?"
"Don't you have any interest in shield machines?"
"Let me see."
Wang Bu slowly took over the drawing.
There is a mark on the drawing. This is a drawing drawn by the Western Construction Corporation five years ago.
This is a shield machine with a diameter of 18 meters.
From the data alone, it can almost be regarded as the world's first.
The designer of the drawings is a person named Yan Sen.
A very awesome name.
Even a layman like Wang Buyan knows it.
why?
Because when he died, obituaries were issued all over the country.
In the field of construction machinery, Yan Sen can definitely be regarded as Taishan Beidou. Academician of the Academy of Engineering. Academician of the Academy of Sciences. The leader of many super large engineering projects.
"It's a pity, Professor Yan passed away two years ago." Jiang Dong said regretfully.
"Why don't the drawings be handed over to others?" Wang Buyan asked casually.
"Others can't make such a large diameter."
"Oh."
Wang Bu'an nodded thoughtfully.
It seems that Wan Chaoyang still looks up to himself. If there is a problem, he still throws it into his own hands.
Of course, this can also be seen as a test for Wan Chaoyang.
If it is done well, it will naturally gain the trust of Xijian.
But if it messed up, it would ruin his Wang Bu'an sign. It will affect other construction machinery.
Wang Buyan certainly hopes to do well.
However, this matter really needs a long-term consideration.
why?
Shield machine, super construction machinery!
There are just so few manufacturers in the world that can produce shield machines. There are only two domestic ones. 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, shield machines will also be used.
Unfortunately, the geological conditions are so bad that the shield machine cannot be used.
However, the technical requirements of the shield machine are also very high.
The first is the drill.
To be precise, it is the drill bit array.
In front of the shield machine, there is 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 to coordinate?
This is a very advanced craft.
If they are not done well, they will affect each other and reduce work efficiency.
The quality of a single bit is also important.
It is common to encounter hard rocks. For example, granite or something.
If the strength of the drill is not enough, the loss will be serious.
The size and style of the drill bits are different.
There is a main drill bit.
There are auxiliary drill bits.
The size of the main bit may be large. It is the main force of tunneling.
The role of the auxiliary drill is mainly to clean the corners that the main drill cannot touch. Or it can be a side strike to provide a good construction environment for the main drill bit.
The styles of drill bits include spiral drill, flat drill, twist drill, step drill, flat wing drill, three-point drill...
Just the manuals of various drill bits can be written into a book.
Big sixteen. More than five hundred pages.
The second is the hydraulic system.
A drill bit requires a hydraulic system.
As many drill bits, as many hydraulic systems are needed.
Finally, all hydraulic systems need to be brought together and controlled by the central hydraulic system.
How to arrange?
How to coordinate?
How to unify?
It is not clear in one or two sentences.
If you are just getting started, just study the relevant information, you have to gather hundreds of people and spend a few years to study separately.
The motor is again.
A drill bit requires a drive motor.
As many drill bits, as many drive motors are needed.
The drill bits are divided into main drill and auxiliary drill. Of course, the driving motor also has the difference between the main motor and the auxiliary motor.
The power requirement of the main motor is very large, and it is overwhelming.
The power of the auxiliary motor requires economy. That is to save energy as much as possible.
The third is reliability and stability.
The shield machine has too many components. Problems are inevitable.
The key is the time to deal with the failure. The sooner the better.
It is best not to malfunction.
"What are your requirements?" Wang Bu'an asked calmly.
"The price per unit cannot exceed 50 million yuan." Jiang Dong said straightforwardly.
"Brother, this is a shield machine with a diameter of 18 meters!"
"Yes! I know it's 18 meters!"
"This is the largest shield machine in the world."
"Yeah! I know!"
"you guys……"
Wang Bu slowly put down the drawing of the shield machine.
18 meters in diameter...
Price 50 million...
I have to say that Wan Chaoyang's pricing is a bit difficult for others.
The existing shield machine brands are mainly from Germany and Dongying. Germany's shield machine is the cheapest, each costing more than 50 million yuan. The shield machine from Dongying, the cheapest one, costs more than 30 million yuan each. The price of domestically produced shield machine is generally between 20-30 million.
However, the diameter of these shield machines is basically below 10 meters.
10 meters and 18 meters are completely different concepts.
The price of an 18-meter shield machine is at least twice that of a 10-meter.
To say that among all the construction machinery, the most technical content and the most complex structure is the shield machine~EbookFREE.me~Modern shield tunneling machine integrates light, mechanical, electrical, hydraulic, sensing, and information technology. It has the functions of excavating and cutting soil, conveying soil ballast, assembling tunnel lining, measuring guide deviation and other functions. It involves geology, civil engineering, machinery, mechanics, hydraulics, electrical, control, measurement and other disciplines and technologies, and must be based on different Geology conducts
tailor-made
design and manufacturing, which requires extremely high reliability.
At a construction site, basically only one shield machine is working. There is no rotation.
If the shield machine fails, it means that the construction site is going to stop.
Any builder does not want such a breakdown and shutdown.
Money is lost every minute.
In the past year, more than 1,200 shield machines have been produced worldwide, with a total output value of more than US$12 billion.
In other words, the average price of each shield machine is more than US$10 million.
Multinational companies not only produce complete sets of shield machines, but also sell various key components.
For example, Toyo's Mitsubishi Heavy Industries, Kawasaki Heavy Industries, and Komatsu Works. Herrenknecht in Germany, Robbins in the United States, Loft in Canada, etc.
They have their own advantages in terms of power, hydraulics, motors, drill bits, and software control.
A shield machine needs to be composed of all aspects.
Wan Chaoyang's first priority is motivation.
It used to be said that when the train rang, there was nothing but gold.
Now it is the sound of the shield machine.
why?
The energy consumption of the shield machine is also very large.
If this cost can be saved, it will have a huge advantage in engineering grabs in the future.
Does Qianzhou Heavy Industry have such technical strength?
The fourth one is coming today. In the new week, recommendation tickets are very important. Ask for a recommendation.