"Do you really see that?" said the little girl, unsuspecting, with a look of surprise.

In an instant, she became worried again and asked, "Have you ever seen such a connection?"

"Of course, heavy machinery such as coal mines and oil like to be connected with bushings. "Sioux City came to his senses after speaking, and it was 1987.

In the early days of heavy machinery, the connection between the gearbox shaft and the gear was usually an interference connection. In maintenance, once the gear and shaft are disassembled, the connection fails, and the repair significance is lost, and the quality of the assembly and connection cannot be guaranteed if it is reprocessed. For example, the oil production unit at the oil field site is usually replaced by large gears, because of the interference connection, the maintenance workers have to replace the gears and shafts together, resulting in large losses. If Chapter 10: Bushing connection is connected with bushing, only the gear needs to be reprocessed, which naturally reduces the maintenance cost.

However, the popularization of such technology will not be until 10 or even 20 years later, after most of the machinery is updated, Sioux City is now saying it, which obviously hits people's enthusiasm.

The little girl lowered her head in frustration and said, "I knew that there was already such an invention. ”

Su Cheng hurriedly remedied: "I haven't seen this kind of connection you designed. There are many types of bushing connections, as long as there is no duplication, they are all new inventions. ”

"Have you ever seen any other bushing connections?"

"Of course, for example...... Expansion sleeve connection. "Sioux City thought of a connection that shouldn't be there right now.

"Can you show me?"

Su Cheng hesitated, took out a pencil, and drew a schematic diagram of the expansion of the joint at the corner of the edge of the drawing. This is an advanced way of connecting the shaft sleeve during his school years, but the essence is very simple, it is still through the pretension screw and the connecting sleeve to create friction between the shaft and the connected part.

Without considering the proportional relationship, Su Cheng drew a schematic diagram with a few strokes, and said: "The friction of transferring the load Chapter 10: The coupling force of the bushing should be calculated, which is probably like this." ”

"You're so powerful, my name is Shulan, and I'm from Shengli Petroleum School, what about you?" the girl generously stretched out her hand, her face pink.

"I work in the oil production team. Sioux City. ”

"I have someone in my family who is in the oil production team, but not as good as you. When Shu Lan heard that he was a worker, he immediately had a good impression and his tone was kinder.

Su Cheng smiled and said, "I usually like to read. You're in school, are you about to graduate?"

"yes. Today I want to show the drawings to the teacher......" Shu Lan said with a sigh of relief, "I'm sorry, I have to go to the design institute." ”

"Go ahead, I'll read the book for a while, and I'll go. Su Cheng saw Shu Lan leave the library, only to feel hot all over, patted his head fiercely, and said in his heart: What do you think, people are still young.

At the same time, there is another thought in my mind: the development is so good, in fact, it is not small.

……

Shulan walked quickly all the way to the Design Planning Research Institute.

Her teacher, Liang Jianguo, works at the graduate school and only goes to school for classes two days a week.

Like the Gudong Oil Production Headquarters, the Research Institute is also the second-level unit of Shengli Oilfield, and the Research Institute of Geological Sciences, the Research Institute of Drilling and Oil Production Technology, Shengli Petroleum School, Shengli Health School, Normal College, Staff Training College, Oilfield Party School, Central Hospital, Wuqi School, Shengli Hospital, Yantai Sanatorium, Cadre Recuperation Center, etc.

However, Liang Jianguo is a veteran technician in the oilfield, and he leads the team to do design research every day, so that he can hand over a topic to the students in the class at will.

Seeing Shu Lan tiptoe in the door, Liang Jianguo smiled dumbly and shouted, "What, is the old man who bullied me dazzled?"

"Master Liang, how dare I. Shu Lan was much more lively at this time, ran to the experimental table with the drawings, and said with a smile: "I went to the library this morning to check the materials, but there are still a lot of things I don't understand." ”

She said as she spread out the drawings.

Liang Jianguo said "um", put on reading glasses, and looked at it seriously.

However, his gaze quickly wandered away from the drawing, pointing to the diagram on the side and asking, "You drew this?"

"No, it was a worker I met in the library, and he drew it. ”

Liang Jianguo simulated it in his hand and sighed: "This is a good design, but the drawing is too simple, and the various parameters are not marked, so it is not easy to judge." ”

"Yes, I remember him saying that the friction to transfer the load should be calculated. Shu Lan tilted her head and thought.

"Then it involves torque, you say it's a worker?" Liang Jianguo was a little unconvinced.

Shu Lan said affirmatively: "Yes, he said that it was from the oil extraction team." ”

"Which oil production team?"

"This ......," Shu Lan couldn't say.

"The ability to calculate the torque and transfer the load is not weaker than the college students in our college, and his design is quite novel. Liang Jianguo roared back: "Xiao Wu, come here and draw this schematic diagram to see." ”

The design of a connection is quite simple, mainly the relationship between the gear and the shaft, plus a middleware.

Xiao Wu is also 30 years old, and he drew it in three or two clicks, took it and said loudly: "Old Liang, your design is exquisite, if you replace our equipment, you can save a lot of money every year." ”

"I didn't do it. Look at it, if there is only a drawing of this schematic diagram, is the data easy to calculate?" Liang Jianguo was a secondary school student in his early years, and he could still do calculations before, but when he got older, he rarely calculated by himself.

Xiao Wu stared at the drawings for a while, and said: "It's a little difficult, it is estimated that it will take ten days and half a month, and we have a lot of tasks now, otherwise we can call a few more people to come together." ”

Shu Lan suddenly jumped up like a white rabbit and said, "I'll go find him." ”

……！！！