In Ye Qing's hand was a circular piece of synthetic light steel. Under the magnifying function of the data glasses, he began to analyze the material. Ye Qing could clearly see that the circular piece of light steel was surrounded by a layer of grayish-brown coarse granules.
The surface of the light steel originally had a layer of black anti-rust paint, but now the paint was falling off. In Ye Qing's field of vision, these coarse granules were made up of countless tiny cracks.
This was the most direct manifestation of metal fatigue. Its internal structure had already been damaged by external forces, causing its strength to greatly decrease.
The cause of metal fatigue was always caused by external forces repeatedly exerting pressure on it. Many countries had experienced regrettable air accidents caused by metal fatigue.
If a piece of metal was placed there, it would not be damaged without external forces.
The light steel structure of the ceiling was static, and the light bulbs and cables would not move.
Thus, the only part that could move was the water circulation air conditioner.
The water circulation air conditioner would have an extension unit fixed at the top every set distance. Inside, the exhaust motor would hum and rotate at high speed.
"It should be the exhaust motor in the air conditioner, which caused the metal support of the pipe and the external unit to resonate, causing the support to quickly fatigue." Ye Qing's current data glasses are transparent glass, so outsiders can't see any abnormalities.
"How did you determine?" The chief designer Xiao Jun nervously looked at Ye Qing.
"If you want to prove this point, it's very simple." Ye Qing took off his glasses and pointed to another passage in the exhibition hall: "The consistency of the industrial products is very high. You can check those pipe brackets that have not yet fallen off. If the strength of the connecting parts is also significantly lower, then it proves that the resonance was caused by the motor. "
"Very likely!" Gree Group's representative manager was stunned at first, then slapped his thigh: "Since there is no problem with our design, then the resonance is the most suspicious cause of the accident."
Several Gree Group's maintenance staff pushed the scaffolding and hurriedly ran to the side of the undamaged extension unit. They skillfully dismantled the extension unit and then cut off two of the light steel components that connected the extension unit to the pipe.
Without using any equipment, just by using pliers to clamp down on the two round pieces of light steel, they could clearly feel that the two round pieces of light steel were abnormally weak.
"It really was caused by the resonance." The representative manager said anxiously, "That shouldn't be the case. Our motor products are absolutely qualified. The homogeneity of the bearing is far higher than the national standard. It's impossible for abnormal vibrations to occur."
"It's not an abnormal vibration. It's the natural vibration of the motor." Ye Qing explained to the confused crowd, "If the motor is vibrating abnormally, we can tell from the sound."
"But when the motor operates and drives the fan to rotate, there will be obvious natural vibration."
"In layman's terms, it's a normal vibration. The sound sounds very soft, and the vibration amplitude is very small. However, there will still be high frequency vibrations. If the frequency of this vibration is close to the resonance frequency of the external fixed material, resonance will occur. "
"It's obvious that the resonance frequency of these light steel structures is very close to the natural vibration frequency of the motor, which is why serious metal fatigue occurs."
"I'm not sure if everyone has seen the movie 'Final Destination'. There's a scene in the movie where the air-conditioning unit resonates with the connecting part, and the whole air-conditioning unit comes crashing down."
"I understand." The representative manager was suddenly enlightened. "This is a coincidence, a huge coincidence. Our products have also been tested for resonance, but natural vibrations cannot be eliminated. Who would have thought that it would resonate with this light steel material. "
"Simple ~"
"It's very simple to solve. We just need to adjust the speed of the motor and we can avoid resonance."
"What should we do about the damaged stent structures?" The chief designer Xiao Jun, full of resentment, said. Many of the staff members who were watching the show immediately fled in all directions.
That's right ~
There was already a pipe and extension unit in the corner that fell down. This meant that there was a possibility that all of the air-conditioning units in the exhibition hall would fall down.
With this kind of probability, who would dare to gamble with their life?
"Temporarily close the exhibition hall. All staff members leave. We'll only enter after the hidden danger is solved." Mayor Wen Xiaowei immediately gave the order. As long as there were no casualties, there was still room for recovery.
Without any hesitation, the crowd all ran out.
It was like going from spring to summer. The canopy had a certain insulation function, and the cold air inside had not completely dissipated.
Now that they suddenly ran out of the canopy, they suddenly felt very hot.
"Thank you, thank you very much for your explanation. You saved us a lot of precious time." Standing outside the canopy, Mayor Wen Xiaowei's nervous expression eased a lot. He held Ye Qing's hands and shook them non-stop.
"Where's your exhibition hall? If the exhibition hall can be restored, I'll let the staff members advertise your company on the giant screen projection TV. "
"Zone 42. It's Monster Heavy Industries in the innermost corner." Ye Qing awkwardly scratched his head and reported the location of his company's exhibition hall.
It was the corner of the last row. There was no position worse than that.
"Monster Heavy Industries!" Mayor Wen Xiaowei gave a thumbs up and praised: "A very bold name."
"Young man, you must be in the mechanical field. Moreover, you must be very proficient in it." The chief designer Xiao Jun also stepped forward to express his praise: "We do architectural design, and we also consider wind resonance testing. The Tacoma Channel Bridge in the United States is the most painful example."
"But this is an indoor building. Who would spend so much money to do a resonance test for a stationary object?"
"Even if they did, they wouldn't be able to detect it. Before, we were all pushing the blame to each other, thinking that it was the ice that caused the weight to exceed the limit. "
"I didn't think that the problem would actually appear in the mechanical resonance." The chief designer Xiao Jun said somewhat guiltily: "These are two completely different fields of knowledge …"
"Let's not talk about this for now." Mayor Wen Xiaowei said: "The seriousness of this matter, I'm sure everyone understands. Since there is a problem with the structure of the sky curtain, then we need to seize the time and solve it within a day. "
"Otherwise, the exhibition can't be held at 9 o 'clock tomorrow morning. Our country's face will be completely lost."
"Mr. Xiao, you are a well-known designer in the country. This sky curtain was created by your studio, so please help us come up with an idea."
The chief designer Xiao Jun solemnly nodded and fell into deep thought. During this time, he walked back and forth and made a few phone calls to ask if the factory responsible for this batch of light steel materials had any in stock.
After the phone calls, he had his accompanying assistant go in and use a simple method to test the strength of the main structure of the sky curtain.
As the messages came back one by one, the chief designer Xiao Jun's forehead was slowly covered with beads of sweat.
Pacing back and forth, he would pinch the space between his eyebrows from time to time and suddenly come to a realization. Then he would shake his head in disappointment.
In the end, the chief designer Xiao Jun said with shame: "There is no other way. This batch of light steel is a specially made non-standard product. I've just asked the factory. They don't have much in stock, not even enough to repair the collapsed corner. "
"In fact, even if they had enough in stock, they wouldn't be in a hurry. These light steel structures were welded and assembled by the construction team a month in advance."
"Now that things have come to this, there is only one way."
"What way?" The district chief Wen Xiaowei nervously asked as he wiped the sweat from his forehead.
"The main structure of the sky curtain is in good condition. We will directly use a plastic plate to fix the collapsed corner. We won't install the outside of the air conditioner."
"The destroyed exhibition area also needs to be repaired immediately."
"And then …" The chief designer Xiao Jun sorrowfully said: "Under all the air conditioner parts, we will use vertical steel pipes to support the weight of the air conditioner parts and pipes."
"We will need around 300 steel pipes. There is no time. The steel pipes need to be thick enough to support the weight of the air conditioner parts and supports. "
"Clang ~" An official next to the district chief Wen Xiaowei dropped the crystal teacup in his hand.
He was the district chief of the World Expo Garden. Hearing this solution from one of the country's top designers, the district chief felt that he wouldn't be able to go out in the future. He would be laughed at by everyone.
This was an international large-scale exhibition. In the exhibition hall, there were three hundred steel pipes in the middle of all the enterprise display areas and several main aisles.
How were people going to walk? How were the companies going to show off their products?
How were they going to walk in an S shape around the pillars?
What would those domestic and foreign reporters, as well as a large group of foreign company managers, think when they saw this?
What if there were a few girls who were interested in performance and pole dancing around the pillars to mock the exhibition?
The World Expo Garden was an internationally renowned garden. The district chief had seen many young men and women with strange thoughts perform all kinds of shocking performances in the garden.
"Mr. Xiao, you …" The district chief Wen Xiaowei was really anxious at this time. He even changed the way he addressed Xiao Jun: "Please think of a solution. If we really install pillars, then this exhibition … "
The chief designer Xiao Jun helplessly shook his head. The design of the sky curtain was done by his studio. If there was a way, how could he not want to save his studio's reputation?
"We … can only use the steel pipes as support." The chief designer Xiao Jun trembled and wiped the sweat off his face. He said dejectedly: "The steel pipes are a must. We would rather be laughed at than let the guests face the risk of being smashed at any time."
"300 steel pipes, no less than that. Maybe there are places where the steel pipes can be placed more cleverly. For example, we can use the steel pipes in the shape of a door to make space in the aisles. "
"We don't know if we can make the steel pipes in the shape of a door in time …"
"Then we can find a studio to do some decorations or decorations …"
"I … will ask the mayor." The district chief Wen Xiaowei took a deep breath and walked to the side to make a call.
Five minutes later, the district chief Wen Xiaowei slowly walked over. His face was a bit pale.
"Let's start. Mr. Xiao, you are in charge of the design of the steel pipes. Try to make it so that it won't hinder the pedestrians and the company's activities."
"I will contact the park department and ask them to immediately start the processing of the steel pipes."
"Oh right, what is the height and diameter of the steel pipes?"
"The height is two meters, the diameter is about eight centimeters, and the thickness is about eight millimeters. The top has to be welded to support the pipes, and the bottom has to be fixed …"
"There is too little time. The bottom can only be welded to a flat plate, and then the four corners have holes for nuts."
The district chief Wen Xiaowei's face turned even paler. This kind of design made him feel like he was inspecting a construction site in his district.
He was about to nod and agree, but his eyes inadvertently swept over Ye Qing who was nearby watching the show.
"Mr Ye, Mr Ye." The district chief Wen Xiaowei hurriedly greeted Ye Qing and walked in front of Ye Qing: "Mr Ye, you are in the heavy machinery industry. Do you have any ideas to make the support pillars more beautiful?"
"At least … we don't have to weld the bottom with nuts."
"In one day, we can only do it in stages. Use a hollow steel pipe for the base, weld one end of the pipe with a steel plate, punch a hole in it, fix it to the ground with nuts, and finally weld it to the top of the support pipe."
"In any case, the steel pipe will be used for decoration. No one will see the welds."
"Mm …" Ye Qing thought for a while and said: "The steel pipe can use DN80 galvanized steel pipe. The thickness and diameter will fit the requirements. This type of steel pipe is very common in the market. It is also very convenient to process. If several factories process it at the same time, it will be easy to make three hundred of them. "
At this point, even if the district chief Wen Xiaowei was extremely unwilling, he could only follow the chief designer Xiao Jun's suggestion.
Yes, what could they do in one day?
There was no other way. They could only contact the famous art studios to make the steel pipe art decoration.
It was better to be a joke than to have an accident. The exhibition could also be held smoothly.
"Mr. Ye, we will calculate the compensation for your damaged equipment after the exhibition is over. Please forgive us, but we are really under pressure right now. We don't have time. "
"Understood, understood. As a company participating in the exhibition, we of course have to cooperate with the exhibition."
After finalizing the solution, the district chief Wen Xiaowei and the chief designer Xiao Jun immediately got to work.
The company staff also left. It was almost noon. The weather was getting hotter and hotter. It was like a sauna.
Ye Qing also followed them out. It was almost lunchtime. Ye Qing prepared to take Xu Xiaohu and the others out for a good meal as a reward.
After walking out of the huge exhibition hall, Ye Qing took out the 3D camera from the car and took a picture of the huge exhibition hall.
The exhibition hall's exterior was very modern and artistic. The exterior design was made by a world-class master architect. After taking a picture of it, he could go back and make a mini exhibition hall that could be used as an office.
There was still some time before lunch. After Ye Qing took the picture, he couldn't stop taking pictures like a photography enthusiast.
Because there were a lot of strange buildings in the expo garden.
Even the greenery and the various landscape trees were carefully trimmed by a master gardener.
For example, the Yellow Mountain Yingke Pine in front of Ye Qing. It was as if it was born out of a rock. Its roots were entrenched and it was verdant and tall.
The 3D camera could take pictures of any object and create a perfect 3D blueprint in an instant. After taking pictures of a few buildings, Ye Qing focused the camera on the Yellow Mountain Yingke Pine.
The metal smelting center had a 3D forging function. Whether it was the hull of a ship or other complex irregular shapes, as long as there was a blueprint, it could be smelted very quickly.
These landscape trees were very unique. If the smelting center could make a few of them and put them in the factory, it would be very cool.
In the Anhui Province, there was a famous art that had a history of more than 300 years.
Iron painting!
Using a hammer as a brush and iron as ink to paint.
In the Anhui Hall of the Hua Xia Auditorium, there was a huge iron painting "Yingke Pine". Countless foreign dignitaries took pictures in front of this iron painting. This made the Yingke Pine a symbol of friendship between Hua Xia and Hua Xia.
But!
Who had seen a pure metal Yingke Pine made of titanium alloy?
Ye Qing wanted to ask the whole world. Who had seen it?
No one had seen it. The Monster Heavy Industries factory had it.
Ye Qing happily pressed the shutter. Then, a perfect 3D blueprint of the Yingke Pine appeared in the 3D camera's infinite blueprint memory card.
Then, after taking the picture of the Yingke Pine, Ye Qing froze in place.
It was as if he was struck by lightning.
The Yingke Pine in front of him suddenly made Ye Qing think of a very, very important question.
What if …
What if he used a Yingke Pine completely made of metal, which could be called a work of God, as a support for the air conditioning ducts in the exhibition hall?
What kind of concept was this?
The core purpose of the International Science and Technology Exhibition was to innovate and change life through technology.
Looking at the structure of the entire exhibition hall, from the air conditioning, to the light steel structure support, it was all done around the theme of technological innovation.
What if he replaced the pole dancers' support with those lousy pole poles. What if he replaced it with this kind of magical industrial technology that no one had ever heard of or seen before?
Wouldn't that become the biggest highlight of this exhibition, the biggest hot spot and selling point?
According to the plan, three hundred broken steel poles were needed. Maybe there would be some ribbons, flowers, and the Peace Festival. The decoration would be like a wedding room to cover up the funny steel poles.
What if he replaced it with the Yingke Pine, Luohan Pine, and Crape Myrtle Tree, which had strong ornamental value?
A tree with umbrella-like forks, these forks could become various fulcrum points to support those air conditioning ducts.
If the design was right, a tree could replace dozens or even more steel pipes to complete the supporting work. The location of the installation would be even more arbitrary. It could be placed wherever he wanted.
Imagine, when people entered the exhibition hall, the first thing they saw was not the welcoming words, nor the small advertisements stuffed by various companies.
Instead, they were stunningly beautiful trees made purely of steel.
Wasn't this the combination of technology and art?
Wasn't this promoting the traditional culture of our country and making foreigners stunned and completely dumbfounded?
If aluminum alloy was used to build the branches of the trees, then the heat conductivity would be far better than the dense branches of iron. It could also fully absorb the cold air discharged by the air conditioner and conduct it to the entire tree.
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