post middle age

Chapter 32 suddenly enlightened

Ren Shuxia rested for a few days. According to the doctor's advice, she applied eye drops on time and went to bed early and woke up early. Her mother Ding Xiang was also extraordinarily careful about the food. The temporary blindness of her right eye gradually improved. The technical problem about hanging strings, whenever she has free time, she can't help but think of this unsolved technical problem...

One night, after Ren Shuxia had dinner, she was sitting on the bed reading a book alone. At this time, her father came in. He was holding a cup of steaming fresh milk, and handed it to his daughter with a smile. Looking at the handwritten draft, he asked suspiciously:
"Why, Shuxia, why is this hanging string popular now?"

Knowing that her father is also an experienced catenary engineer, Ren Shuxia couldn't help explaining to her father the biggest technical problem encountered in the research and development of the "Automatic Production Line for Hanging Strings".

Father Ren Ziyu listened to his daughter's words, bowed his head and thought for a long time, then raised his head and said:

"The suspension string is such a small thing that it was nothing to do catenary work in the past. At that time, the suspension string was still an adjustable suspension string made of iron wire. The on-site workers processed, installed and adjusted it by themselves."

"Huh, I didn't expect that the hanging string was like this at first?" Ren Shuxia asked with a look of surprise.

"That's right. Later, as the speed of the train became faster and faster, the straightness of the power supply wire on the locomotive became more and more demanding. The suspension string also changed. It is made of pure copper wire and is not adjustable as a whole. Yes, all of them have become delicate young ladies, all covered in jewels, and the precision requirements are getting stricter. I heard that the error is ±0.1mm, the diameter of a strand of hair

Generally, it is 0.04~0.05mm. Look at it, how high is this requirement? My daughter’s worried eyes are almost blind?Father Ren Ziyu continued talking with his daughter.

"Dad, how humorous are you?" Ren Shuxia showed a rare smile.

Seeing his daughter smiling, Ren Ziyu changed the topic and asked the main topic:
"Shuxia, those of us who are engineers and technicians are very dull. We generally think horizontally and rarely have vertical thinking. Therefore, we are self-enclosed and often face a professional technical problem, and we will fall into a vicious circle of thinking. , I was at a loss."

Ren Shuxia listened carefully to her father's seemingly simple but philosophical words, and kept nodding her head in agreement.

"Shuxia, have you thought of any aspects that you haven't considered besides all the links you have thought of?" Ren Ziyu asked her daughter.

"Dad, you are also an old catenary engineer. Doesn't the construction of hanging strings mean accurate measurement, pre-configuration in place, and firm installation? We have considered these key links one by one in the early stage!" Ren Shuxia said puzzled.

"Then recall, did the hanging strings that were pre-assembled in the material warehouse work well after on-site installation?" Ren Ziyu continued to ask.

"The curve section and the joints of the anchor section need to be adjusted by the workers on site. Dad, I don't know why. No matter what software you use, it can't be regarded as hanging strings?" Ren Shuxia asked with a puzzled face.

"Don't underestimate this little hanging wire. It is not an easy task to calculate the accuracy. It contains all kinds of technical parameters and professional knowledge. You know more than me, so Dad will not Too much to say. But why was this little hanging string not considered good in the past?" Ren Ziyu stopped talking suddenly when he was talking, and looked at Ren Shuxia with a smile.

"Dad, why don't you just talk about it at a critical moment?" Ren Shuxia asked hastily.

"Shuxia, you know that no matter what calculation software he uses, his calculation principles are nothing more than three kinds" parabola, hyperbola, and broken line, based on the structural geometric relationship and moment balance relationship, through some actual on-site measurement data and related designs; theoretical values , to calculate, this is not the dynamic value of the contact line after the actual installation, so there is an error in the calculation principle, plus factors that affect the site dynamics of the suspension string: such as: tension changes, structure height, The slack of the clues, the condition of the line, etc., so it is theoretically impossible to calculate the correct hanging string. "

Ren Ziyu's professional theoretical analysis made Ren Shuxia even more confused after listening to it. She asked anxiously:

"Then what should we do? Our set of "Hanging String Automated Production Line" spent more than 500 million yuan in national scientific research funds, and it took more than three years to build this appearance. I can't solve the problem of the accuracy of the hanging string, am I really not reconciled?"

"You, you've got a stubborn temper again, haven't you, you can't get out of the horns?" Ren Ziyu said with a smile
"Dad, what can you do?" Ren Shuxia hurriedly handed the milk to her father.

Ren Ziyu took a sip of sweet milk and said with a smile:

"Since I retired, I have nothing to do. I like to watch the "Xiaolin Award" event held by the trade union of our group company every year. To be honest, this technological innovation event is well organized. Talking about the experience of on-site technical practitioners, I remember that a field technician wrote a summary article about the pre-configuration of the wrist and arm. What about the third prize?"

When Ren Shuxia heard this, her eyes lit up and her heart suddenly became clear. She said with a smile:

"Dad, I see. You mean that after the suspension strings are calculated by the software, there must be an important link before the pre-configuration process, and that is the simulation proofreading link?"

"You ghost girl, you are worthy of being my Ren Ziyu's daughter, and you are a failure professionally." Ren Ziyu said proudly.

"Father, but a few days ago, I also sent the computing software to Mr. Li of the Design Institute. After computer simulation, he said that the software has no technical problems." Ren Shuxia couldn't help but think of Mr. Li of the Design Institute telling her back.

"I guess it's a static simulation. This requires a high-simulation dynamic simulation on the spot to produce the effect?" Ren Ziyu replied.

"Dad, you are amazing! I know, now there are two kinds of software programming that can be solved, because they should be Ansys and matlab. I will call Mr. Li of the design institute. They should have what the design institute should have. These are all What will be used in the preliminary design of the high-speed rail?" Ren Shuxia said and was about to call President Li.

Ren Ziyu glanced at his daughter distressedly, and persuaded with a smile:

"You don't check what time it is. If you don't rest, doesn't Mr. Li also rest? Call me tomorrow during the day. Okay, go to bed early. By the way, are your eyes okay? If this Let your mother know, this big night, we are still talking about work, and if you are exhausted, your mother will still peel me alive!"

"Okay, I got it, Dad, thank you!" Ren Shuxia replied with a smile.

Through this conversation with her father, Ren Shuxia finally found a solution to the technical problem of hanging strings. Her tense mood for several days was instantly relaxed. She was lying on the bed, listening to her favorite classical music "Spring River Flower and Moon Night", and gradually fell asleep... …

On this pleasant night, Ren Shuxia dreamed that their scientific research project was put into use and achieved great success in the construction of the Beijing-Zhangjiakou high-speed railway project. CCTV Technology Channel even went to the site to conduct an exclusive interview with her...

This beautiful dream made Ren Shuxia wake up laughing all the way...

　Ginger is still old and spicy, especially for experienced industry engineering units, the elderly are sometimes very important.It is true that the energy and drive of the elderly are not as good as the vigorous young people, but their loyalty to the enterprise, rich experience, and the spirit of not being afraid of hardships, courage to face, and perseverance in the face of various problems are also indispensable for the healthy development of an enterprise. one ring.

　　Therefore, to treat the elderly well is to treat oneself and the enterprise well.

　　There are no zinnias in the flowers, it is only near dusk, and the sun is setting. Our group of unyielding fate, still insisting on ourselves, and striving to become stronger, is taking sonorous and powerful steps, facing the warm sunset, step by step. Step into this colorful "Post-Middle Age".

　　
　
(End of this chapter)