King of Industry

Ji Chongxuan's words made the atmosphere in the conference room freeze to freezing point.

Listening to this big guy's talk about the current embarrassment of domestic mine hoists, everyone began to worry about the future of this product from their own factory.

After seeing everyone's negative reactions, Ji Chongxuan waved his hand and said with a smile: I have told you so much, but I don't mean to scare everyone away.

What I want to say is that I am very confident about this mine hoist in our factory...

Turning his eyes to Zhao Guoyang in the middle, Ji Chongxuan said seriously: Mr. Zhao has just explained the advantages and disadvantages of domestic and foreign mine hoists clearly.

Presumably everyone has heard that he is very researched in many technologies of mine hoists. With him in charge of this project, I think this product has a great hope of success.

After Ji Chongxuan finished speaking, he reached out to Zhao Guoyang and made a gesture to indicate that he had finished his speech.

Zhao Guoyang scratched his head when he heard the boss boasting about himself.

He really didn't expect Mr. Ji to have so much confidence in him. With his full support, it would be unreasonable if he couldn't make this mine hoist.

In the following time, Zhao Guoyang talked with everyone about some problems and difficulties that may be encountered in the design of mine hoists.

First, of course, is the design of the spindle unit.

Zhao Guoyang glanced at Zhao Siyan beside him, and said: As for the design of the main shaft, let's ask Minister Zhao Siyan to tell you in detail. If there is anything that needs to be added, everyone can directly bring it up.

After Zhao Siyan listened to his instructions, she began to open her notebook and began to describe everything in detail.

Mr. Zhao has already told everyone before that there are two basic models of our mine hoist. Basically, we have settled on two types: single-tube main shaft device and double-tube main shaft device.

There is a big difference between the two, and they need to be discussed separately. The opinion of Mr. Li and I is that our company's product research and development department and technology department will deploy elite troops to develop these two models at the same time...

When Zhao Siyan talked about this, some technicians below asked questions: Minister Zhao, is it too hasty to carry out the development of two models at the same time?

After all, our company has no experience in producing this kind of machinery before. There must be problems with this hasty two-pronged approach?

After hearing this, Zhao Guoyang interrupted and said, Hey, everyone, don't worry about this.

The two models that our SMS company has decided have some differences in their working mechanism, that is, the main shaft, but they are basically the same in terms of braking system, mechanical transmission system, lubrication system, observation and control system, etc.

Turning his head and glanced at Zhao Siyan, Zhao Guoyang continued: That is to say, as long as we design the main shaft of the two models, the following can be carried out simultaneously.

Through the series of performance just now, Zhao Guoyang has become a guiding light among the technicians of SMS company.

Basically, what he said, in the eyes of everyone, is the golden rule.

After explaining a few words to Zhao Siyan, Zhao Guoyang nodded to her, signaling her to continue talking.

Zhao Siyan nodded slightly and said: First of all, I will first distinguish the single-tube spindle device from the double-tube spindle device, and I will probably tell you about it!

The single-tube spindle device is composed of a reel, a spindle, a main bearing, and left and right wheel hubs, among which the main bearing is a sliding bearing.

Its left hub is a sliding fit with the main shaft, and the right hub is press-fitted on the main shaft, and is fixed with the main shaft with a strong tangential key.

The connection between the reel and the right wheel hub is all made of refined matching bolts, and the connection between the reel and the left wheel hub is made of one and a half refined matching bolts and ordinary bolts.

Double-barreled main shaft device consists of main shaft, main bearing, two reels, four hubs, rope adjustment clutch and other main parts. Its fixed reel is installed on the transmission side of the main shaft, and its connection with the hub is the same as that of the single-barrel The active device is the same.

The traveling reel is on the non-transmission side of the main shaft. The connection between the traveling reel and the supporting wheel of the traveling cylinder adopts half of the number of refined matching bolts and ordinary bolts. The right supporting wheel of the traveling cylinder has a two-half structure. Through the two halves Copper tiles slide on the spindle...

Since a domestic mine hoist has been purchased and analyzed before, everyone will not feel confused or incomprehensible about Zhao Siyan's narration.

Zhao Guoyang observed for a while, and most of the technicians were taking notes seriously, recording some key points that Zhao Siyan said.

Basically, our two series of mine hoists include tangential keys, brake wheels, shells, wood linings, bevel gears, hand wheels, main shafts, small winch wheels, worm gears, worms, brackets, etc. .”

Among them, the most critical part - the reel of the main shaft device is all welded by Q345 steel plate, and the inside of the reel is equipped with a support ring and a thick elastic support structure...

When Zhao Siyan narrated this point, Zhao Guoyang coughed and made a pause gesture to her.

Noticing the look in his eyes, although Zhao Siyan was a little puzzled, she quickly stopped talking.

Zhao Guoyang put down the teacup silently, and said unhurriedly: Just now, Minister Zhao mentioned the problem of the reel material of the spindle device. Everyone should pay special attention to it.

I know that our conclusion about the use of Q345 material for the main shaft device drum is drawn from the domestic mine hoist we purchased. In fact, there is nothing wrong with this.

but!

Zhao Guoyang changed the topic abruptly, The feedback I got from most of my products in the international market shows that Q345 steel is no longer the mainstream steel for the spindle device reel...

Hearing this, Zhao Siyan's heart skipped a beat.

On the other side, Li Zhaohe was equally bewildered, not knowing what the current international mainstream materials are.

Zhao Guoyang didn't make them wait too long, and quickly went on to tell: According to what I know, when foreign mine hoists are designing the main shaft device reel, the material is set to 16Mn.

Although these two materials can be used as the design of the spindle device reel, the difference between the two is still obvious.

Q345 is a low-alloy high-strength structural steel; while 16Mn is a pressure vessel, carbon steel and low-alloy steel forgings are used. Compared with the two, 16Mn has stricter requirements for sulfur and phosphorus content, and stricter quality requirements.

16 Mn and Q345 are the same in general use, but it is undoubtedly more secure to choose 16 Mn for the more important parts such as the spindle device reel...

After Zhao Guoyang's narration, everyone gradually understood.

Indeed, the performance gap between Q345 and 16Mn is still obvious.

Especially the first product of our own factory, we must be cautious. If you use Q345, everyone will feel a little bit uneasy.

After Zhao Guoyang reminded, Zhao Siyan hurriedly recorded this point seriously, and then started the following technical analysis.

...

Driving the small car on the way to Songqi Group, Zhao Guoyang couldn't help recalling the situation of the first technical seminar held by the company yesterday on the mine hoist project.

After a half-day meeting, everyone basically had a clear understanding and understanding of this project, and the division of tasks has also been clarified.

Basically, the current situation is that Li Zhaohe and Zhao Siyan, each leading a team, first completed the design of the main shaft devices of the two mine hoists.

Then, after the design is completed, the two teams will merge into one to carry out a series of subsequent designs.

As for Ji Chongxuan and the few students he brought, they serve as the project technical support team and serve the two design teams at the same time.

The main shaft device is the most important part of the mine hoist. It is not just as simple as buying products from other manufacturers and changing them slightly after disassembly. It needs to be equipped with the data of your own products.

Of course, Zhao Guoyang has helped Li Zhaohe and Zhao Siyan complete the theoretical analysis and overall design.

The following details need to be improved and improved bit by bit during research and development.

For the SMS company side, Zhao Guoyang can't get involved for the time being.

After all, after the spindle unit has been designed, it needs to be certified and audited by experts.

In this regard, although I have the ability to do it, it takes too long and I don't have the permission of a professional organization. Instead, it is more cost-effective and convenient to invite an expert to come over.

After the morning meeting, Zhao Guoyang chatted with Ji Lao during lunch.

Judging from what the old man said, it seemed that he wanted to invite chief engineer Wang Yuliang to go out in person.

As the chief expert in the research of heavy machinery and equipment at the Huaxia Engineering Institute, if Chief Engineer Wang Yuliang can really come, it will undoubtedly be great news for the first mine hoist in his factory.

However, Zhao Guoyang could also hear that Mr. Ji still had doubts about whether to invite Mr. Wang.

After all, it was because he was disheartened before that he stepped back from his prominent position and started some basic research work.

When Mr. Wang has gradually healed the trauma in his heart, it is hard to say whether he will bring a new blow to him if he is invited rashly.

Although Zhao Guoyang has strong confidence in his mine hoist product.

But he didn't dare to give a full guarantee that this product will definitely be able to stand shoulder to shoulder with the international advanced level.

If Mr. Wang is dissatisfied with the products of his company, or brings back some bad memories, Zhao Guoyang will definitely feel uncomfortable.

After thinking for a while, Zhao Guoyang's cell phone next to him suddenly rang.

After picking up the phone, Chairman Mao's cadenced voice came from inside: Guoyang, are you coming soon? I've got everyone here, just waiting for you!

Zhao Guoyang was taken aback when he heard the words, wondering who else Chairman Mao had invited.