I! Pretending to Be Reborn, Director of Doomsday Hoax

The CRH3's sixteen-carriage group actually uses the Schaffenberg coupler. In addition to the special coupler head design, it also installs two additional drawbars.

Shinkansen's N700, as well as E5/E6, have similar designs.

Xu Fu and Ji Chengping panicked.

If Xu Qiu was not satisfied immediately, the coupler probably won't work.

Xu Fu continued: "AAR coupler?"

This kind of coupler comes from America, it can transfer large loads, and it can also be connected automatically.

"Or, Wedgelock coupler?"09

"Tomlinson coupler?"

Pneumatic, fixed hook lock, etc. are the advantages of these couplers, and they are also some of the leading vehicle connection device designs in the world.

Xu Qiu shook his head, rejected all of them, and asked, "The coupler is not a suitable form."

"You should know about the Wind Dragon Project. Under the extreme cold of minus [-] degrees, traditional blade-type wind turbines have been eliminated."

"Just like the Fenglong project, the traditional coupler connection device must also be eliminated!"

No matter how advanced the coupler-type connection is, it still cannot be separated from the steps of connection and deconstruction, and in this process, gaps will inevitably occur.

"Director Xu, do you have any ideas?" Ji Chengping asked.

Xu Qiu said in a low voice, "Do you know TGV?"

Ji Chengping was taken aback for a moment, and said, "The high-speed railway system of the White Flag State?"

Xu Qiu nodded and said: "The TGV is driven by locomotives at the front and rear, and uses high-power electric motors and hinged frames. It abandons the traditional couplers, and there are four red drawbars near the roof and the bogie. .”

"This tow bar is the key component connecting the two carriages."

"One side of the car is connected to the bogie through the drawbar, and the other side of the bogie sits on one side of the center plate, and there is no traction between the bogie and the bogie."

Ji Chengping and Xu Fu looked at each other.

This structure is mainly used in Xibao, especially in the field of commuting, and it is more widely used.

Long Guo abandoned this design a long time ago.

Reason is very simple, joint type structure can only be used for the train of fixed formation.

The flow of people in Longguo is too large, and the development of high-speed railways and railways is also too rapid. Different train sets have different formations, so close-connected couplers can only be used.

In addition, the hinged structure is too compact.

This creates two additional problems.

First, there is no room for the motor.

Second, it is easy to cause inconvenience in maintenance.

The over-structured structure compresses the space inside the train, and there is no place to place the motor as the power source.

Moreover, maintenance tools and people all need to take up space, and the connecting train must use special tools to carry out maintenance.

But at this moment, this huge flaw turned out to be a rare advantage! !

What a nuclear-powered dragon needs is an extremely compact design!

Ji Chengping was overjoyed and said, "Director Xu reminded me!"

"The joint type has another advantage. It has very weak constraints on the limit on the curve, which is very beneficial to the interior layout of the train, and the passive safety is better!"

Xu Fu also reacted abruptly, and said, "Yes, the compact space is originally a shortcoming, but what we need is no gaps!"

The design of Baiqiguo is to place the motor under the car body.

In fact, whether it is a articulated bogie or an ordinary bogie train, the motor is between the two pairs of wheels of the bogie, unless it is a wheel-side motor train like a low-floor tram, that is, a variable-gauge train. It is a motor on each side of the bogie.

Of course, there are still some special cases, such as CRH5 and its prototype car, which use the motor universal joint drive under the car.

As for the nuclear power dragon, its power source is the nuclear power room in the front of the icebreaker!

Xu Fu was thinking about the possibility of a joint structure, his eyes were wild, and he said:

"If the jointed bogie is used, when the train is hit, the lateral movement of the car node is restricted by the jointed bogie so that it will not fly out directly obliquely."

"This process can be interpreted as the change of the direction of restraining force transmission. Center plate, bogie, wheel set, rail pair...Through this transmission, the serpentine movement of the train is strengthened!" Nuclear power long dragon, ice breaking The front of the train is to break the ice, and the trains will collide frequently! !

If it is a joint connection, in addition to having no gaps, it can also minimize the impact on the train caused by splitting the ice!

Xu Fu continued:

"Also, the hinged structure can reduce the overall number of bogies and save costs."

"In addition, the train has excellent integrity, with a small number of bogies and low vibration."

"But the problem is."

At this point, Xu Fu showed a contemplative expression, and continued: "The problem is that its axle load is too heavy, and it wears more on the tread."

"This joint bogie has a large impact load on the wheels and rails. Once the joint bogie breaks, the entire train will stop running."

"And the joint bogie used by the train means that the marshalling cannot be dismantled by uncoupling. This is the disadvantage of permanent marshalling, and it is almost impossible to avoid!"

The joint structure is equivalent to turning the entire train into a whole, there is indeed no gap, and the impact force of the impact is more stable.

However, if the train is damaged,

Trains with tight-fitting couplers can be repaired by deconstructing damaged carriages.

However, the permanent marshalling formed by joint structure cannot singlely repair a certain compartment.

It is of course possible to dismantle and repair it, but it is very troublesome. The railway department of any country is very resistant to dismantling the permanent marshalling for maintenance.

Xu Qiu nodded, admitting this shortcoming, and said: "Indeed, once the permanent marshalling is damaged, it is almost difficult to repair it."

"However, if the nuclear-powered dragon is damaged on the surface, under the severe cold of minus [-] degrees, within ten years, can we humans have a way to repair it?"

"It's extremely cold at minus two hundred degrees, is it possible to go to the surface for repairs?"

Everyone's eyes widened.

Thinking about it carefully, it is true what Xu Qiu said, if the nuclear-powered dragon is really damaged, even with a close-fitting coupler, human technology is far from being able to go to the surface of minus two hundred degrees to repair a single carriage.

Ji Chengping said: "Indeed, if the nuclear power dragon is damaged, there is a high probability that it will be concentrated on the power compartment at the front end of the icebreaker."

"If damage occurs here, the entire train will lose power and stop at a certain section of the road."

"Such damage is no different from the damage of permanent marshalling, and the nuclear-powered train is still scrapped."

Xu Fu nodded heavily.

Zou Botao, Li Bingqing and others had question marks in their minds.

They are a little confused,

Xu Qiu, who was chatting and laughing with them just a moment ago, now knows every word that comes out of his mouth, but when they are connected together, they become a heavenly book.

Xu Qiu said:

"Right now, there are two solutions to the problem of damage to permanent marshalling."

"The first one is practical. It is very difficult to improve the manufacturing process of the center plate at the joint of the car body. It may even require mobilizing the elites of the high-speed rail and train industry in the whole country to explore and experiment one after another." Zou Baitao et al. surprise.

Is this still realistic?

What is that unrealistic?

Xu Qiu went on to say:

"The second is to set up a fully automatic inspection and maintenance system on the train's body and compartments on the basis of building a nuclear-powered train."

"Intelligent operation throughout the whole process, repairing the damaged car body!"

but.…

A wry smile appeared on the corner of Xu Qiu's mouth.

This is an area that humans have never set foot in.

the reason is simple,

For the maintenance of high-speed rail and railway, it is enough to ask a few workers to bring tools, and the cost of damage is very low.

However, building a train damage detection and self-repair system is simply impossible without an initial investment of billions.

Moreover, this also requires the installation of several carriages on the weight of the train itself to store the parts and components needed for train maintenance.

How to let the system automatically identify parts is a problem, and how to let the manipulator judge the extent of damage and determine the repair method according to the type of damage is also a problem.

A fully automatic inspection and maintenance system is as difficult as rebuilding a high-speed rail from scratch.

Xu Qiu said: "There are still ten months before the sun goes out. The main task now is to develop the nuclear-powered train first. On this basis, improve the manufacturing process of the heart plate at the joint of the car body." "As for The fully automatic inspection and maintenance system should be put in the back first.”

"It should be no problem to ensure that the nuclear-powered dragon can run on the surface for ten years, based on the current rail manufacturing process, train manufacturing capacity and industrial level of our Dragon Kingdom."

"As for ten years later... At that time, our technological strength may have developed to the point where we no longer need to worry about the surface maintenance of nuclear-powered dragons."

Xu Qiu walked up to Ji Chengping,

The latter leaned on crutches, feeling nervous, and his chapped lips squirmed.

"Director Xu..."

With a warm smile, Xu Qiu straightened Ji Chengping's crooked tie, and said, "Old Ji, the nuclear-powered long dragon of the Dragon Kingdom is related to the transportation of materials between a thousand underground cities, and it also affects the tens of millions of people in the Dragon Kingdom. people's heart

"This long dragon is in the hands of you and Professor Xu."

Ji Chengping was flattered and said respectfully: "Director Xu, I will definitely live up to your expectations!"

Xu Fu also expressed his determination, saying: "Director Xu, our remnants will be dedicated to the Dragon Kingdom. I recommend Xuanyuan with my blood for the future survival of the Dragon Kingdom. We will definitely risk our lives... .”

At this time, the developers and workers of the nuclear power Changlong Construction Department also stopped their work and surrounded them.

They looked at Xu Qiu with respect, respect, and surprise, but the only thing that remained the same was their deep love for this country!

"My generation is desperate to save for the Dragon Kingdom!"

Ji Chengping, Xu Fu and the developers watched Xu Qiu go away in a helicopter.

Unknowingly, the young director of the emergency department has conquered everyone and gained recognition.

Ji Chengping leaned on crutches, and slowly saluted Xu Qiu's distant sky,