The meal was eaten at a restaurant at the entrance of the factory.

After the three of them sat down to order the delicious food, Zhao Guoyang talked to Zhao Siyan about his understanding and ideas about drilling hoists.

"Siyan, I know that your graduate student's main focus is on vehicle manufacturing. You may be a little unfamiliar with machinery such as mining machinery and equipment. It just so happens that today I have time, so I'll have a brief chat with you."

When Zhao Guoyang said this, Zhao Siyan clapped her hands and smiled, "That's great, Guoyang, I have been to the workshop several times in the past two days, just to learn more comprehensively and in detail about this situation."

"Now, if you, an expert in the technical field, tell me personally, that's a big deal, I must listen carefully."

Zhao Guoyang said in an orderly manner with his fingers: "Then, generally speaking, mining machinery and equipment refer to machinery specializing in mining, mineral processing, and prospecting."

"The large number of cranes, conveyors, ventilators and drainage machinery used in mining operations are collectively called mining machinery and equipment."

"From the purpose, mining machinery and equipment are divided into several types: mineral processing equipment, mining equipment, prospecting equipment and transportation equipment. You should know all of these."

Speaking of this, Zhao Guoyang pointed to Li Zhaohe who was listening carefully and said, "The best vibration feeder sold by Lao Li and his factory before is a kind of mineral processing equipment."

Hearing this, Li Zhaohe nodded with a "hum" and said, "Yes, Minister Zhao, you may not know that when the factory was going to pack and sell it, Mr. Zhao had a theoretical confrontation with the South Koreans who came to acquire because of the vibration feeder."

"Mr. Zhao's understanding of mining machinery and equipment is completely unexpected. What's even more rare is that he does not come from mining machinery, which is even more amazing!"

Listening to Li Zhaohe's sigh, Zhao Siyan responded: "Mr. Li, you are right. The most powerful thing about our Chairman Zhao is his erudition and talent."

"I still remember when I first met Mr. Zhao, I felt that I was a graduate student and I felt a bit superior."

"Who knows, after chatting with him casually, I was stunned!"

Speaking of this, Zhao Siyan looked at Zhao Guoyang with a hint of admiration.

"Later, I summarized Chairman Zhao's knowledge, and it was just four words - bottomless."

Seeing Zhao Guoyang's very calm look, Zhao Siyan stuck out her tongue and said, "Mr. Zhao, this is not what I said, that's the evaluation made by the teacher!"

After Zhao Siyan finished saying this, Li Zhaohe nodded with deep understanding.

Zhao Guoyang was somewhat surprised to learn that Professor Zhu Maotao gave him such a high evaluation in private.

As the three of them chatted, the topic returned to the drilling hoist.

Zhao Siyan has also spent some time studying the concept of drilling hoists these days.

When she mentioned this topic, she blinked and said, "I have also learned a lot about mining machinery and equipment such as drilling hoists."

"It refers to the main transportation equipment that connects underground and ground in mining projects, right?"

After Zhao Siyan said this, Zhao Guoyang and Li Zhaohe nodded at the same time.

Seeing that neither of them denies their statements, Zhao Siyan continued: "I have read the information in detail these two days and learned that drilling hoists are usually installed on the ground. However, I cannot make a judgment on how it works because there is no physical object."

Zhao Siyan's words are honest.

Indeed, the information collected by technicians in the 1990s was generally mainly paper, either books or magazines.

Although there are a small number of illustrations in books and magazines.

However, it is a bit exaggerated to just use these illustrations to fully understand the operating principle of such a complex mechanical one.

In such a situation, you can only explain the mystery through word-of-mouth through senior technicians, and then answer questions and answer questions to beginners.

Faced with the troubles caused by the limitations of this era, Zhao Guoyang has no better way for the time being.

At this time, when Zhao Siyan was confused about the working methods of the drilling hoist, Zhao Guoyang explained it in detail to her.

"Siyan, the working method of a drilling hoist is actually not complicated. In most cases, it uses wire ropes to drive the lifting container to run along the wellbore or ramp."

"For purposes, this mining machinery factory is often used to lift coal, ore, gangue, and lift personnel, decentralize materials, tools and equipment, etc.," he said.

Looking at Zhao Siyan's expression that seemed to be unimaginable on her face, Zhao Guoyang made a gesture and said, "Simply put, the movement principle of the drilling hoist is somewhat similar to the pulley structure of our high school physics."

"Of course, the internal structure of the drilling hoist must be much more complex than the pulley structure..."

Zhao Guoyang's vivid and appropriate explanation made Zhao Siyan understand a lot at once.

She nodded and said, "Chairman, I'm probably in a good way when you say this. To put it bluntly, this kind of mining machinery is similar to an elevator, right?"

"Well, that's right!"

Zhao Guoyang nodded and said, "In foreign countries, drilling elevators are sometimes called mine elevators. People call them a special form of elevators, but in my personal opinion, they are more like a simple elevator."

Although Li Zhaohe doesn't know much about drilling hoists, he still knows more than Zhao Siyan.

After listening to Zhao Guoyang's story, he followed and said, "Mr. Zhao is right. When I visited a large mining equipment machinery factory in the west, I saw them purchasing a drilling hoist from abroad."

"That looks like a lift!"

Listening to Zhao Guoyang, Li Zhao and others' explanations, Zhao Siyan's understanding of drilling hoists gradually became three-dimensional.

Because he has been engaged in scientific research, Zhao Siyan is good at thinking when she comes into contact with fields she is unfamiliar with.

After listening to the explanations of Zhao Guoyang and Li Zhaohe, she asked a question: "Chairman, after just hearing you and Mr. Li introduce the drilling hoist, I feel that this kind of mechanical equipment should not be widely used."

Zhao Siyan continued with some confusion: "I have seen it in a magazine that after a mine is excavated, the mine starting point should be a very small area."

"In other words, drilling should be carried out in a very small area. So the demand for drilling hoists should not be too large, right?"

After Zhao Siyan asked this, Zhao Guoyang quickly understood what she meant.

He smiled and explained, "Siyan, the magazine you read should be quite old, right?"

"Uh, yes. It seems to be an article published in 1979 in 'World Industrial Technology'. I thought it was interesting at the time, so I specially recorded it."

Zhao Guoyang nodded suddenly and said, "The mining method you mentioned does exist. But it has been more than ten years ago and is already a thing of the past."

"Now, except for some rare metal mines, most coal mines and iron ore mining are concentrated and intensive."

"If you start a mine, it is impossible to do it in just one area. Sometimes, drilling wells in more than a dozen or twenty areas at the same time is common!"

Speaking of this, Zhao Guoyang paused for a moment and continued to speak: "Also, in modern mining activities, safety issues are being paid more and more attention, both domestically and internationally."

"In the process of transporting people and objects from mines, drilling hoists, as a very important conveying tool, must have a certain number. Therefore, during the mining process of a deposit, the number of drilling hoists may reach dozens or even hundreds of them."

"Especially, the underground conditions and working environment are more harsh and difficult than on the ground. Therefore, in order to ensure the safety of personnel, two or three drilling hoists are often working at the same time..."

What Zhao Guoyang said was not only Zhao Siyan, but also Li Zhaohe had never heard of it.

When Zhao Guoyang said he wanted to build a drilling hoist, he did not tell him the details of market demand, but just told him that after this kind of machine was produced, he would definitely not have to worry about sales.

Although he trusts Zhao Guoyang himself, he has no basis after all, and Li Zhaohe is a little confused about whether this mining equipment can achieve good results.

After listening to Zhao Guoyang's detailed explanation, the last bit of concern in Li Zhaohe's heart also disappeared.

As for Zhao Siyan, she also looked like she suddenly realized her mind.

She stroked her hair on her forehead and nodded gently, "Well, as stated, this drilling hoist is really an indispensable equipment in mining activities. So we don't need to worry too much about sales!"

Zhao Guoyang said "Hmm" and said, "Don't worry, Siyan, when I chose this drilling hoist as the first main product of our SMS company, the first thing I considered was the market demand issue."

"If I hadn't had confidence in this product, I wouldn't have chosen it as my main focus so firmly!"

Zhao Siyan said "hmm", as if she remembered something.

She tilted her head and looked at Zhao Guoyang and said, "I have another question after hearing what the Chairman said..."

Zhao Guoyang shrugged and made a "but it's okay" expression.

"My question is, since the market demand for drilling elevators is very large, why haven't I heard of any manufacturer in China producing this kind of machinery? Could it be that it is because the technical level is not up to date?"
Chapter completed!