"Is automatic control so difficult? Is it impossible?" Lao Sun stared at his eyes and wondered: "Isn't it just a telescopic rod and gear? Motor, rain sensor, oil pump, what else do you need?

With our current manufacturing level, precision processing is not much cost, right? They are all from our own home, how precise do you want? The oil pressure is not good, and the water pressure is not good, so the main parts are chains, right?"

Zhang Yanming looked at Lao Sun: "What are you talking about?"

"What are you talking about?" Zhang Xiaoyue raised her face and impressed her father.

"What are you talking about?"

"What are you talking about?"

"Hey?" Lao Sun gritted his teeth and made a fierce expression, and reached out to pinch Xiaoyue's fat face: "Little girl, don't you want to be fooled anymore, don't you? How dare you say that to me?"

Zhang Xiaoyue turned around and buried her little face in Zhang Yanming's arms, and spoke back in a buzzing voice: "You, you don't want to be messed up, don't you? You dare, and you still want to pinch my face?"

Lao Sun pinched Zhang Xiaoyue's little ears and rubbed them, and said to Zhang Yanming: "Is what I said wrong?"

Zhang Yanming looked at Lao Sun with a twitching face and looked at him like a fool: "If you have manual control, don't have a telescopic rod or oil pump? If you don't have a gear? If you use air?"

Lao Sun was stunned for a moment and laughed: "I've confused you, it's the same? Then why don't you use automatic control? I just feel strange. How can I not arrange the surface manually?"

Zhang Yanming shook his head: "It's not practical. It's mainly because the current technology has not yet reached the level that it can meet the automatic control of the stadium.

The conditions for closing the roof of the stadium are relatively complicated, not only rain, scorching sun, strong winds, or other factors may require closing.

Automatic control can only sense rain or rely on temperature and humidity, which cannot meet the actual needs.

Moreover, no matter how sensitive the rain sensor is, it is also a rainy feeling. It is actually too late to turn it off when it feels raining.

Such a large ceiling is not something that can be completed in a few minutes. When it is closed, it will be almost rained down. So why do you use it?"

Lao Sun thought for a moment: "Damn, it's true. It takes some time for such a big thing to do, indeed."

"There is another aspect of maintenance. Although the overall structure of automatic and manual bodies is similar, there are still differences, that is, it is not practical and increases maintenance costs. What should I do with it?"

Lao Sun raised his hand and put his hair together, and tickled a few times: "I'm careless, so easy to give you a chance to humiliate me. I'm careless, it's over, my reputation has been ruined for a lifetime."

"No, the stadium was made open because of technology and cost. Now these are not bad anymore. Isn't it over to just close it? Why do you have to spend money on this kind of closed one?" Wang Honggang asked with confusion.

Zhang Yanming, Lao Sun, Lao Zhang and Ni Hao looked at each other and laughed, which made Wang Honggang laugh. Hua Jintang also looked confused, not understanding what the funny point was.

"What's wrong?" Wang Honggang looked at several people and asked.

"Thank you, it turns out that it's so easy to resolve the embarrassment." Old Sun bowed to Wang Honggang: "Lao Wang, you are a good person."

"No, what's wrong? Isn't it right? Isn't it a technical problem if the stadium is not capped? And the cost is too high. Are we missing these now?"

Zhang Yongguang reached out and pressed his hand on Wang Honggang's shoulder: "Brother, let's say a few less words, the more he talks, the more he shows his timidity."

"What are you showing timid? I'm showing timid? Stop laughing, explain it to me, just laugh it off." Wang Honggang felt that he was not saying anything wrong. These people are so strange.

Lao Zhang said: "You are right. Because of the scale issue, large stadiums do not have technical and cost factors in it. The original technology cannot support such a large area of ​​suspended roof."

"Yes, that's the case. Am I wrong?" Wang Honggang slapped the table: "Is this kind of technology a problem for us now?

Even if you can build an open-closing roof, isn’t it easier to directly enclose it? Although this cost is not a big deal for us, then the closed-closing roof is always much lower than the open-closing roof, right?”

"Brother," Zhang Yongguang said with a smile: "This is a stadium, not a stadium."

"I know, what's wrong?"

"The stadium, the lawn is in the middle."

"What's wrong with the lawn?...Damn." Wang Honggang stopped and slapped his chin: "I'm careless."

The lawns in the stadium have very high standards, and the cost of maintenance is quite high in all aspects. The most important thing is that grass needs photosynthesis to grow to maintain health.

The cap is to deal with extreme weather, heavy rain, hail or heavy snow, or keep warm when holding large group activities in winter, etc., but most of the time it is still open to facilitate light.

It also facilitates ventilation and heat dissipation. The heat, breathing and noise generated by tens of thousands of people need to be released.

It turns out that technology could not be achieved at that time, and there was no way to top it up, but with the development of technology, this kind of technological constraints no longer existed.

The main reason why stadiums are still open to the top is cost and light, and release several aspects.

It is not possible to directly fully enclose, but the cost of closing is indeed too high and the frequency of use is not high, so I simply stopped doing it.

(In reality, there are many stadiums, including the bird's nest, designed with open and closed roofs that can be closed. Later, it was given up due to cost reasons, or it was made into a fixed shape, such as Chongqing Stadium.)

The main reason why Zhang Yanming set up three open-closed roof stadiums was that Fengcheng wanted to hold large-scale employee activities in these stadiums, and needed to prevent rain and cold.

In fact, the frequency of use is not high, but this cost doesn't matter to Fengcheng.

This is different from the country. The country needs to build too much, and every city needs it. If you can save a little, you have to save a little, although in fact, you can't save much.

A state-owned investment of a stadium of 60,000 people was about 700 million in 2001, but Zhang Yanming's 120,000 people only had 900 million points, and it was still open and closed.

It’s like buying a broom for three yuan, and the unit’s purchase will be seven yuan. It’s understandable, understandable, and it’s not surprising at all.

"So, it's a bit of a waste to make this. How many times can we use it a year?" Wang Honggang decisively changed the topic.

"We are different. We need to be able to protect against rain and cold during daily activities. This opening and closing top is necessary, especially at the employee meeting at the end of the year, it is a bit colder if it is not too cold."

Wang Honggang thought for a while: "Tangcheng wants to build one, right? In addition, there is one in Luzhou? Is it necessary that one in Beijing? We have so many employees in Beijing?"

"Brother, Beijing is our headquarters. There will be no staff meeting at the end of the year? All provinces have to go to some people, right?" Zhang Yongguang glanced at Wang Honggang with that look, feeling that his IQ seemed to have not been online today.

"There is still a need in the capital, and I am considering whether to build another large gymnasium. The frequency of self-use here will not be too high, but the external demand will be relatively large, after all, it is the capital."

Zhang Yanming explained to Wang Honggang.

"I don't feel that this is necessary," Zhang Yongguang took the conversation: "We have a diamond hall, which can fully meet the needs."

"I am planning to position the diamond hall higher." Zhang Yanming looked at Zhang Yongguang.

"A few sub-halls inside, and the main hall is positioned."

Zhang Yanming thought about it and felt that it was OK. This method was quite reasonable.
Chapter completed!