King of Industry

On the construction site on Xueyuan Road, facing the questions raised by Wang Shouyi and Mao Feiming, Zhao Guoyang thought for a while before speaking.

On the whole, there is still a certain gap between China's hoisting machinery manufacturing industry and the advanced level of foreign countries, which is mainly reflected in three aspects.

First of all, the first aspect is that our design level is still relatively low, and there is an obvious gap between us and foreign countries in terms of product technology development concepts.

Zhao Guoyang explained 1510: At present, most of our domestic enterprises generally have problems such as not broad product spectrum, lack of in-depth understanding of user technology, serious product convergence, and poor pertinence.

As far as I know, our hoisting and transportation machinery design method in China mainly adopts a single allowable stress method. In foreign countries, the limit state method and the recently adopted probabilistic design method have already been added on this basis. In order to ensure the accuracy of design parameter values, safety factor selection and structural optimization design.”

This also makes the products involved in our Huaxia heavy machinery and equipment companies inherently have many shortcomings compared to others...

When Zhao Guoyang said this, Wang Shouyi and Mao Feiming looked at each other while I looked at you.

The two of them only knew domestic lifting machinery and equipment before, and there was a gap in quality between them and foreigners. But where this gap comes from, they don't know very well.

After listening to Zhao Guoyang's narration at this time, the two finally understood a little bit.

Not paying attention to the long and short sighs of the two, Zhao Guoyang continued to speak: Secondly, compared with the advanced level of foreign countries, our hoisting machinery and other large-scale construction machinery and equipment are also much inferior in terms of technology.

Due to the late start and the low level of the basic material industry, most of the lifting and transportation machinery products in our country have problems of poor quality parts and backward technical and economic performance.

These problems, in the final analysis, are also China's backwardness in production technology.

Let's give a few simple examples. Our Huaxia is seriously lacking in high-precision processing equipment. The reliability of electrical components is low and the performance is poor; the backwardness of thermal processing technology makes our domestic castings and forgings low in quality and the appearance of welded parts is also poor. I can't compliment you... Zhao Guoyang shook his head slightly, speaking truthfully.

In addition, the lack of testing equipment is also a major factor restricting the improvement of our country's technological level. As for some special manufacturing processes that represent the international advanced level, it is even more difficult for us to contact, let alone research and produce.

Researcher Zhao, you are so right!

Hearing this, Mao Feiming slapped his thigh and said, The last time I went to 'Mitsubishi Heavy Industries' in the island country to discuss business, I saw the general process of their lifting and transportation machinery production.

Mao Feiming sighed quite a bit: Actually, I have also visited several domestic heavy industry machinery factories. It's not that I'm not patriotic, but to be honest, the production level of our domestic heavy industry enterprises is comparable to that of 'Mitsubishi Heavy Industries'. There is really no way to compare...

Hearing this, Wang Shouyi nodded sadly, speechless.

Seeing this, Zhao Guoyang coughed and said slowly, As Mr. Mao said, there must be a big gap between us and developed countries in terms of machinery manufacturing.

However, I believe that as long as we adhere to the principles of reform and opening up, go out more, take a look, give full play to our own advantages, and work together to learn from the barbarians and use their skills to control the barbarians, we have a good chance In a short period of time, narrow the gap with developed countries.

When Wang Shou heard the words, he looked at Zhao Guoyang in surprise.

Although he heard Director Li Ru introduce Zhao Guoyang's identity, he didn't know some of the young man's previous deeds.

So now, after hearing Zhao Guoyang's confident words, he couldn't believe it.

Zhao Guoyang could naturally see the doubts in Wang Shouyi's eyes.

He smiled, and then got down to business: Director Wang, Mr. Mao, the gap between our domestic hoisting machinery manufacturing industry and the advanced level of foreign countries is finally reflected in reliability.

With the development of modern industrial technology, the role of lifting and transportation machinery is becoming more and more important, the functions are gradually increasing, and the conditions of use are becoming more and more harsh.

This has greatly increased the probability of failure of the current lifting and transportation machinery, and the consequences are unpredictable.

Zhao Guoyang talked eloquently: At this stage, the reliability of lifting and transportation machinery has become increasingly acute, and has become the focus of product competition in the international market.

After listening to Zhao Guoyang's narration, Mao Feiming sighed and said: Researcher Zhao, I have a deep understanding of what you said last!

Take our Beijing No. 2 Construction as an example. Last year, we successively imported 20 cranes and 40 excavators from domestic manufacturers.

However, it has only been a year, and the cranes and excavators we introduced have already experienced dozens of failures. Although some failures are only minor problems, it also takes time and energy to solve them. ah!

Speaking of this, Mao Feiming couldn't help pointing to the independent area on the construction site.

He said helplessly: In contrast, the three cranes we imported the year before the second construction of the capital city have been used continuously for so long, but there is no problem at all.

From the perspective of us laymen, this foreigner's product is more than a little bit better than ours, it is simply a crushing advantage!

Mao Feiming gritted his teeth and said, If it wasn't for the equipment imported from abroad, the price is usually more than three or four times that of the domestic ones. I would have already gritted my teeth and replaced all of them with imported ones.

Researcher Zhao, you need to know that the mechanical equipment on this construction site has malfunctioned, and the problem is very serious. Stopping work and extending the construction period are small things. If there is any safety accident, it will be too late. ...

The loss and disappointment in Mao Feiming's eyes made Zhao Guoyang feel a little sympathy for him.

After Mr. Mao finished complaining, Wang Shouyi shook his head slightly and said, Mr. Mao's remarks are biased, but the truth is correct!

The potential safety hazards of our domestically-made lifting machinery and equipment are indeed a big problem!

Wang Shouyi sighed and said: In this regard, our Ministry of Construction has also communicated with Researcher Zhao and the Department of Mechanical and Electronic Industry. We also formed a joint assessment team and went to the construction site below for field inspections.

However, the results are similar. When the domestically produced lifting machinery and excavation machinery were first produced, there were no problems.

But as the age of mechanical equipment continues to increase, the frequency of failure will become higher and higher.

Wang Shouyi sighed and said: We reported this matter to several major heavy industrial giants in China. But everyone has something to say. They said that the machine was used tiredly on the construction site. Can it not be broken?

Hearing this, Zhao Guoyang nodded, and echoed: That's right, in the current construction in China, the fatigue of machines is a widespread chronic disease.

However, the quality of domestic lifting machinery and equipment is also problematic!

While talking, Zhao Guoyang pointed to the operating crane and said, It's like this kind of bridge crane. Although our domestic heavy industry machinery companies also manufacture it, its core technical level is not that good at all. What's going on...

In this regard, the practices of developed countries in the West have a lot to learn from!

Mao Feiming was most saddened by these precious bumps on his construction site, and immediately asked: Researcher Zhao, what is the strength of the technology of Western developed countries? Can these domestic companies really catch up? ?”

Zhao Guoyang said with an affirmative Yes: As customers from all over the world have higher and higher requirements for cranes, the development trend of bridge and gantry crane production technology has also undergone great changes. This development trend mainly reflects At three o'clock.

The first is the modularization and combination of design...

Zhao Guoyang explained: Now when western developed countries are designing cranes, they are beginning to use modular design to replace the traditional whole machine design method.

They make components, components and parts with basically the same functions on the crane for multiple purposes, have the same connection elements and interchangeable standard modules, and form cranes of different types and specifications through the mutual combination of different modules.

Zhao Guoyang gave an example: To improve a crane, it only needs to improve certain modules. To design a new type of crane, it only needs to select different modules and recombine...

In addition, the production organization of these heavy industrial enterprises in the West has gradually changed from product management to module management. This model helps to improve the performance of the whole machine, reduce manufacturing costs, and increase the degree of generalization.

Plainly speaking, it is to use parts with fewer specifications to form a series of products with multiple varieties and specifications to fully meet the needs of users.

Zhao Guoyang took a short breath and continued: The second point is the large-scale and specialization of equipment.

Due to the continuous expansion of the world's industrial production scale, the increasing production efficiency, and the gradual increase in the proportion of material handling costs in the production process, the demand for large or high-speed cranes is also growing continuously.

At this stage, the lifting capacity of cranes is getting larger and higher, and the working speed is getting higher and higher. Therefore, higher requirements are placed on energy consumption and reliability.

Nowadays, a good crane should not only be easy to operate and maintain, but also have better safety and reliability. It also needs to have excellent durability, trouble-free performance, maintainability and economical use.

Zhao Guoyang said earnestly: Modern industrial production methods and the diversity of user needs have made the market for special cranes continue to expand and the varieties are constantly updated.

For example, special cranes for metallurgy, nuclear power, papermaking, garbage disposal, explosion-proof, anti-corrosion, and insulation cranes, and special cranes for railways, ships, and containers have continuously increased functions, continuously improved performance, and stronger adaptability than before...