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

Listening to this big guy talk about the current embarrassment faced by the domestic mine hoist, everyone began to worry about the future of this product in their own factory.

After seeing everyone's negative reactions, Ji Chongxuan waved his hand and smiled: "I told you so much, but I didn't mean to scare everyone away." ”

"I want to say that I am very confident in this mine hoist in our factory......"

Turning his gaze to Zhao Guoyang in the middle, Ji Chongxuan said seriously: "Mr. Zhao has just clearly described the advantages and disadvantages of mine hoists at home and abroad. ”

"I think everyone has heard that he is very good at researching many technologies of mine hoists, and with him presiding over this project, I think there is a great hope for the success of this product. ”

After Ji Chongxuan finished speaking, he stretched out his hand towards Zhao Guoyang and made a gesture, signaling that his speech was finished.

Hearing this big guy praise himself, Zhao Guoyang scratched his head a little.

He really didn't expect Ji Lao to have such confidence in himself, and if he supported him so much, if he couldn't get this mine hoist again, it would be a little too much.

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

Zhao Guoyang glanced at Zhao Siyan beside him, and said: "Regarding the design of the spindle, let's ask Minister Zhao Siyan to tell you in detail, if there is anything that needs to be added, everyone can put it forward directly." ”

After Zhao Siyan listened to his instructions, she began to open her notebook and tell about it one by one.

"Mr. Zhao has already told you about the two basic models of our mine hoist. Basically, there are two types of spindle devices that we have settled on now: single-barrel spindle devices and double-barrel spindle devices. ”

"There is a big difference between the two, and they need to be discussed separately, and my opinion and Mr. Li are that from our company's product research and development department, technical department, we will draw elite soldiers and strong generals, and at the same time carry out the ......development of these two models."

Zhao Siyan said this, and some technicians below asked: "Minister Zhao, will it be too hasty to develop two models at the same time?"

"After all, our company has no experience in the production of this kind of machinery before, and this rash two-pronged approach will definitely have problems, right?"

Hearing this, Zhao Guoyang interjected: "Hey, everyone can rest assured about this." ”

"The two models set by our SMS company have some differences in their working mechanisms, that is, the spindle part, and are basically the same in terms of braking system, mechanical transmission system, lubrication system, observation and control system, etc. ”

Turning his head and glancing at Zhao Siyan, Zhao Guoyang continued: "That is to say, as long as we design the spindle part of the two models, the following can be carried out synchronously." ”

Through this series of performances, Zhao Guoyang has become a "guiding light" among the technical personnel of SMS company.

Basically, what he said, in everyone's opinion, is the "golden rule".

After helping Zhao Siyan explain a few words, Zhao Guoyang nodded to her and motioned for her to continue talking.

Zhao Siyan bowed her head slightly and said: "First of all, I will first distinguish between the single-barrel spindle device and the double-barrel spindle device, and probably tell you about it!"

"The single-barrel spindle device is composed of a reel, a spindle, a main bearing, a left and right wheel, etc., among which the main bearing is a sliding bearing. ”

"Its left wheel is a sliding fit with the main uranium, and the right wheel drum is pressed on the main shaft and fixed with the main shaft with a strong tangential key. ”

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

"The double-barrel spindle device is composed of the main shaft, the main bearing, two reels, four wheels, and the rope adjustment clutch. Its fixed drum is mounted on the transmission side of the spindle, and its connection to the hub is the same as that of the monotube active device. ”

The traveling reel is simply on the non-transmission side of the spindle, and the connection between the traveling drum and the spring with a support wheel adopts half of the number of refined matching bolts and ordinary bolts. The right support wheel of the oissure is a two-half structure, which is sliding-mounted on the spindle through two halves of copper tile......"

Because a domestic mine hoist has been purchased and analyzed before, everyone will not be confused and confused about Zhao Siyan's narration.

Zhao Guoyang observed that most of the technicians were carefully taking notes and recording some of the key points that Zhao Siyan said.

"Basically, our two series of mine hoists include tangential keys, brake wheels, barrel housings, wood linings, bevel gears, hand wheels, spindles, small winches, worm gears, worms, brackets and other parts. ”

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

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

Noticing his eyes, Zhao Siyan was a little puzzled, but she quickly stopped.

Zhao Guoyang silently put down the teacup and said unhurriedly: "The reel material of the spindle device that Minister Zhao said just now, everyone should pay special attention to it." ”

"I know that our conclusion about the use of Q345 material for the spindle device drum is from the purchase of the domestic mine hoist, in fact, there is nothing wrong with this. ”

"But!"

Zhao Guoyang said abruptly, "From the feedback I have received from most of the products in the international market, Q345 steel is no longer the mainstream steel for spindle device reels......

Hearing this, Zhao Siyan felt a sigh in her heart.

On the other hand, Li Zhaohe was also at a loss, not knowing what the mainstream material in the world was.

Zhao Guoyang didn't let them wait too long, and soon continued: "According to what I know, when designing the spindle device drum of foreign mine hoists, the material is set at 16Mn. ”

"Both materials can be used as spindle reels, but the difference between the two is obvious. ”

"Q345 is a low-alloy high-strength structural steel, while 16Mn is a low-alloy steel forging for pressure vessels. Compared with the two, the 16Mn sulfur and phosphorus content requirements are more stringent, and the quality requirements are more stringent. ”

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

After Zhao Guoyang's narration, everyone gradually understood.

Indeed, the Q345 is still significantly different from the 16Mn, and the performance gap is still obvious.

Especially the first product of their own factory, we must be cautious, if you use Q345, everyone will be more or less unsure.

After Zhao Guoyang's reminder, Zhao Siyan hurriedly recorded this point carefully, and then began the following technical analysis.

……

Driving a small car, driving on the road to Songqi Group, Zhao Guoyang couldn't help but recall the first technical seminar held by the company yesterday on the mine hoist project.

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

Basically, the current situation is that Li Zhaohe and Zhao Siyan, one person with a team, first got the design of the spindle device of the two mine hoists.

Then, after the design is complete, the two teams merge into one and carry out a series of subsequent designs.

As for Ji Chongxuan and a few students he brought with him, they served both design teams as the technical support team for the project.

The spindle device is the most important part of the mine hoist, which is not only the purchase of other manufacturers' products, after dismantling a little change as simple, it needs to be equipped with their own product data.

Of course, in terms of theoretical analysis and overall design, Zhao Guoyang has helped Li Zhaohe and Zhao Siyan to complete it.

Some of the following details need to be improved and improved little by little when they are developing and developing.

Regarding the matter on the side of the "SMS company", Zhao Guoyang can't do anything for the time being.

After all, after the spindle unit is 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 do not have the permission of a professional organization, so it is more cost-effective and convenient to invite an expert to come and visit.

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

Listening to the meaning of his old man's words, it seems that he has the intention of inviting Chief Engineer Wang Yuliang to go out in person.

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

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

After all, it was because of discouragement that people stepped down from their prominent positions and started some basic research work.

When Chief Engineer Wang has gradually healed the wounds in his heart, it is difficult to say whether it will bring him a new blow if he is rashly invited.

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

But he didn't dare to play a full package, this product will definitely be able to compete with the international advanced level.

If Chief Engineer Wang is not satisfied with his company's products, or evokes any bad memories, Zhao Guoyang will definitely not feel comfortable in his heart.

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

Picking up the phone, Chairman Mao's subdued voice came from inside: "Guoyang, it's almost there, right?

Zhao Guoyang was stunned when he heard this, and he didn't know who else Chairman Mao had invited.