Chapter 10 Shaft Sleeve Connection

  "You really figured it out?" The little girl was completely unsuspecting, with a look of astonishment on her face.

  In an instant, she was worried again and asked: "Have you seen such a connection method?"

  "Of course, heavy machinery like coal mining and oil drilling prefer to use axle sleeves for connection." Su Cheng said, only to realize that it was already 1987.

  In the early heavy machinery, the connection between the reducer shaft and gear was usually made by interference fit. In maintenance, once the gear and shaft were disassembled, the connection became invalid, and it lost its repair significance. If re-machining, the assembly and connection quality could not be guaranteed. For example, in oilfield drilling machines, large gears are often replaced due to interference connections, which forces maintenance workers to replace both the gear and shaft together, resulting in greater losses. If using a sleeve connection, only the gear needs to be re-machined, naturally reducing maintenance costs.

  However, such technology popularization will have to wait for 10 or even 20 years later, after most mechanical updates and replacements. What Su Cheng said now is obviously dampening people's enthusiasm.

  The little girl indeed lowered her head in disappointment and said: "I knew it, such an invention already exists."

  "You designed this kind of connection method, I haven't seen it before. There are many types of shaft sleeve connections, as long as they don't repeat, they're new inventions."

  "Have you seen other axle sleeve connections?"

  "Of course, for example... an inflatable docking connector." Su Cheng thought of a type of connector that shouldn't exist now.

  "Can you show me?"

  Su Cheng hesitated for a moment, took out a pencil, and drew a schematic diagram of the sleeve connection in the corner of the drawing paper. This was an advanced shaft sleeve connection method during his school days, but it was actually very simple, still relying on pre-tightening screws and connecting sleeves to generate friction between the shaft and the connected parts.

  Without considering the proportion, Su Cheng drew a diagram with a few strokes and said: "The frictional force of transmitting load should be calculated, it's probably like this."

  "Wow, you're amazing! My name is Shulan, I'm from the Victory Oil School. What about you?" The girl stretched out her hand elegantly, with a hint of pink on her face.

  "I work in an oil extraction team. Suzhou City."

  "There's also someone in my family who works on an oil drilling team, but none of them are as fierce as you." Shulan felt a sudden affection for him upon hearing that he was a worker, and her tone became more intimate.

  Su Cheng smiled and said: "I usually like reading books. You're in school, aren't you about to graduate soon?"

  "Yes. Today I have to show the drawings to the teacher..." Shulan said, and then exclaimed: "Sorry, I have to go to the design institute."

  "You go ahead, I'll read for a while and then leave too." Su Cheng watched as Shu Lan left the library, feeling hot all over, and slapped his own forehead hard, thinking to himself: What am I thinking? She's still young.

  At the same time, there was another thought in his mind: developing so well, it's actually not small anymore.

  ……

  Shulan walked quickly all the way and arrived at the Design Planning Research Institute.

  Her teacher Liang Jianguo works in the research institute and only goes to school twice a week.

  Like the Dongying Oil Production Command, the institute is also a secondary unit of the Shengli Oil Field, equivalent to the Geological Science Research Institute, Drilling and Production Engineering Research Institute, Shengli Petroleum School, Shengli Health School, Normal College, Workers' Training College, Oilfield Party School, Central Hospital, 57 School, Shengli Hospital, Yantai Sanatorium, Cadre Rest Home, etc. It is considered a relatively leisurely position in the logistics department, of course, with less power.

  However, Liang Jianguo is a veteran technician in the oil field, and every day he leads his team to do design research, which can randomly assign a topic to students in the class.

  Xian Shulan slipped in with a stealthy step, and Liang Jianguo burst out laughing, shouting: "What's this? Trying to deceive an old man whose eyes are dim?"

  "Master Liang, how dare I?" Shu Lan was now much more lively, hugging the blueprint and running to the experimental table, laughing: "I went to the library this morning to look up materials, but there are still many things I don't understand."

  She unfolded the blueprint as she spoke.

  Li Jian Guo went "hmm" and put on his reading glasses, looking at it seriously.

  However, his gaze soon wandered off the blueprint and pointed at the diagram on the side, asking: "Did you draw this?"

  "No, it's a worker I met in the library who drew it."

  Li Jian Guo simulated it in his hand and sighed: "This is actually a good design, but the drawing is too simple, and various parameters are not marked, making it difficult to judge."

  "Yeah, I remember him saying that the friction of transmitting loads needs to be calculated." Shulan thought with her head tilted.

  "That involves torque, you say he's a worker?" Liang Jianguo said with some disbelief.

  Shulan nodded and said, "Yes, he said it was an oil extraction team."

  "Whose oil extraction team is this?"

  "This......" Shulan couldn't go on.

  "Can calculate the force matrix and transmit loads, no weaker than college students in our institute. Moreover, his design is quite innovative." Liang Jianguo yelled back: "Little Wu, come and draw out this schematic diagram to take a look."

  A connected design diagram is quite simple, mainly just gears and axles, plus a relationship with an intermediate.

  Xiao Wu was also 30 years old, and with a few strokes, he drew it out. He brought it over and exclaimed, "Liang Lao, this design is ingenious! If we were to replace all of our equipment with this, we could save a lot of money every year."

  "It wasn't me who did it. Look, if there's only this diagram to draw, can the data be calculated?" Liang Jianguo was a vocational school student in his early years and used to do calculations himself, but after getting older, he rarely did them himself.

  Xiao Wu stared at the blueprint for a while, saying: "It's a bit difficult, I estimate it will take ten days to half a month. Our current tasks are not few either, otherwise we can call a few more people to come together."

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

  ……