The train driver in the courtyard

After Yi Zhonghai and Jia Dongxu were taken away, Yiya Ma and Jia Zhang asked around but got no news about them.

Jia Zhang was fine, as she had been investigated before and was able to remain calm.

After all, you will just suffer a little in there, your life will not be in danger.

But the eldest mother is different.

She couldn't sleep at night when she thought about Yi Zhonghai being locked up in some corner.

An aunt wanted to ask a deaf old lady to help her find out some information.

It’s just that the deaf old lady has not been in good health recently. She is either in the hospital or on the way to the hospital.

Occasionally, he would go to Balizi to visit Shazhu, and he had no mood to care about Yi Zhonghai's affairs at all.

Auntie was extremely anxious and had been arguing with Jia Zhang a lot these days.

She accused Jia Dongxu of being a good-for-nothing, betraying his teacher and ancestors and causing Yi Zhonghai to be captured.

Jia Zhang angrily scolded Yi Zhonghai for betraying his apprentice and acting unworthy of being a teacher.

The two families started a dog-eat-dog fight, making the yard a mess.

Both families were "rich families" in the courtyard, and the residents did not dare to say anything. Even Liu Haizhong and the third uncle could not solve the problem.

There was no other way, the street office could only invite the two families to the office and reprimand them. Only then did Auntie and Jia Zhang finally behave themselves.

Li Aiguo's life is happy.

After sending Dasha to Capital University, I took advantage of a few days of rest to catch up on the New Year's celebrations.

He visited all the relatives and friends including Wang Da Kui's family, Zhou Ke's family, and Zhang Yazhi's family.

My father-in-law’s house must not be missed.

Chen Fangxuan, the old tailor, now has an electric sewing machine and a hot pack, and his health is much better than it was two years ago.

Chen Xingjia's son Chen Jiujin was one year old. As his uncle, Li Aiguo gave him a big red envelope of fifty cents.

Chen Xueru also likes children. She took her nephew and went to chat with her sister-in-law.

At noon, Chen Xingyi learned that Li Aiguo had returned, and he also returned to the tailor shop.

Since Chen Xingyi entered the Changxindian Locomotive Factory, his wife has not been transferred back yet, so in order to facilitate work, she temporarily lives in the locomotive factory workers' dormitory.

Chen Xingyi has become the maintenance team leader because of his outstanding performance in the locomotive factory's machine repair workshop.

Li Aiguo had known about this from Chen Xueru a long time ago and congratulated him.

Chen Xingyi looked at Li Aiguo with gratitude.

When Li Aiguo was developing the rollover carriage, he made friends with the leaders and several senior engineers of the Changxindian Locomotive Factory, and they have kept in touch ever since.

Take the Chinese New Year last year as an example. Two deputy factory directors and three chief engineers all purchased bananas and southern specialties through Li Aiguo.

Only through mutual help can relationships gradually become closer and only then can we help each other.

Although those leaders did not mention Li Aiguo when they talked to Chen Xingyi, Chen Xingyi knew it very well.

He had been working at the locomotive factory for less than half a year, so no matter how high his technical level was, it would be impossible for him to be promoted.

"Brother-in-law, I know exactly why I am the team leader, and I have to thank you for that."

"You are too modest. Your leader promoted you because you are capable. Other conditions are just icing on the cake." Li Aiguo said with a smile.

Chen Xingyi knew that his brother-in-law had always kept a low profile, so he didn't say anything more and changed the subject, "Brother-in-law, have you seen our workshop director recently?"

"Yang Xingzhai? Didn't he go back to the south to celebrate the New Year?" Li Aiguo asked.

“Director Yang was originally planning to go back, but then I heard that the road sign machine he designed had problems.

Although it was finally found out that it was a machine failure and had nothing to do with him.

But Director Yang still feels that he has a great responsibility, so he has been drinking to drown his sorrows recently." Chen Xingyi said.

"Is there a problem with the travel visa machine?" Li Aiguo had never heard of this.

Chen Xingyi explained the situation.

The accident happened on the 23rd day of the lunar year.

Train No. 352 from Beijing to Guangzhou (pulled by a People's-type steam locomotive from the Baoding Locomotive Depot of the Beijing Railway Bureau) temporarily stopped at Yuanshi Station (a third-class station located in Yuanshi County, Shijiazhuang City) to wait for loading and unloading of parcels.

Because the postal workers delivering the parcels were delayed, Train No. 352, which was only supposed to stop for ten minutes, waited for a full thirty minutes and still failed to complete the loading and unloading of the parcels.

At this time, a freight train sent by the Harbin Railway Bureau rushed over from behind.

It was early morning and thick fog had covered the area.

When the freight train was traveling at a speed of 50 kilometers per hour and was 352 meters away from the end of the No. 200 passenger train.

The locomotive driver and assistant driver simultaneously discovered that there was a train parked ahead, and without even shouting, they immediately took emergency braking measures.
However, it was too late. A distance of only 200 meters was far from enough to stop a train traveling at 50 kilometers per hour.

A tragedy is inevitable.

The freight train knocked the mail car behind it off the track.

事故造成人民型蒸汽机车中破1辆， UZ12型邮包车厢报废1辆，XL61型行李车厢大破1辆，22型客车车厢小破14辆。

The driver and fireman of the freight train and the conductor of Train No. 352 were seriously injured, several passengers and crew members were slightly injured, and the line was suspended for 15 hours and 06 minutes, constituting a major traffic accident.

Because the Chinese New Year is approaching, the railway authorities attach great importance to safe driving.

The accident is being investigated by an accident investigation committee sent by the Ministry of Railways.

After investigation, it was discovered that Train No. 352 did use a semi-automatic waypoint machine to hand over the waypoint before entering the blocked section of Yuanshi Station.

But the road sign machine malfunctioned.

In addition to the route signing machine, the semi-automatic blocking system also has a manual telephone blocking method as a line of defense.

Unfortunately, after discovering that the route signing machine had a malfunction, the staff on duty in the block section of Yuanshi Station mistakenly assumed that Train No. 352 had left the block section, so they issued an order to allow the freight train to pass.

This resulted in a dangerous situation where the two trains were simultaneously located in the same block section due to a failure of the semi-automatic block system and the deactivation of the basic block method, ultimately leading to the accident.

There are two reasons that led to this accident.

One was that the duty officer had a weak sense of responsibility, and the other was that the semi-automatic road sign machine had a malfunction.

As the inventor of the semi-automatic road sign machine, Yang Xingzhai was temporarily invited to be investigated.

It was eventually found that the failure of the road visa machine was caused by a mechanical failure and had nothing to do with the road visa machine itself.

But Yang Xingzhai still felt that he had a great responsibility, so he was depressed recently and took a full half-month vacation.

Chen Xingyi knew that Li Aiguo had a good relationship with Yang Xingzhai, so he wanted to ask Li Aiguo to come forward and comfort Yang Xingzhai.

"This Old Yang is just a stubborn person!" Li Aiguo agreed without hesitation.

However, after leaving the tailor shop, he did not go to the Changxindian Motorcycle Factory, but instead called Zhou Ke.

"What is the name of the injured train conductor of Train No. 352?"

"Driver Li, please wait a moment. I'll help you check."

A moment later, Zhou Ke's voice came from the phone.

"It was a female train conductor named Zhang Dahua. Hey, this girl is really unlucky.

She was originally a trainee train driver. After a year's hard work, she was promoted to a train driver because of her excellent performance.

However, according to the latest regulations, to become a train driver, one must rotate on the train for three months.

As a result, this girl was hit on her first day as a train operator.

This is just bad luck."

"Zhang Dahua is my old classmate."

"."

Zhou Ke on the other end of the phone was silent for a moment, and then a voice came: "Hey, my son seems to have woken up, I have to coax him, bye!"

Click, and there was a busy tone on the phone.

After hanging up the phone and handing Aunt Pang two cents, Li Aiguo shook his head with a wry smile.

A while ago, when he was chatting with some former classmates, he heard that Zhang Dahua was the operating car driver. He was happy for her, but he didn't expect that something bad would happen just a few days later.

When they were in school, Li Aiguo had a good relationship with Zhang Dahua, so it was natural for him to go visit her.

After returning home, Li Aiguo first went to Wang Dagui to buy a can of malted milk and a few pounds of bananas, and then asked Chen Xueru to steam a pot of big white steamed buns.

Chen Xueru knew that Li Aiguo was going to visit an old classmate, so she asked curiously, "Brother Aiguo, I've never seen anyone bring steamed buns to visit a patient?"

"Don't worry, Zhang Dahua will definitely like it."

Zhang Dahua was on duty in the guard car when the accident happened. She was hit by the parcel car, resulting in broken legs. She was sent to the Qianmen Locomotive Depot Railway Hospital.

When Li Aiguo brought Chen Xueru to the ward, Zhang Dahua was leaning on the bed, chewing a steamed bun.

"Aiguo, why are you here?"

"Are you eating?"

"what"

Zhang Dahua was stunned for a moment, then came to her senses and put down the steamed bun awkwardly.

"The food in the hospital is not good. I don't have enough to eat every day, so I eat secretly."

At this time, the nurse who was doing rounds came in and heard her words. She smiled and said, "Driver Li, don't listen to Zhang Dahua's nonsense. She has already eaten two bowls of cornmeal porridge and four steamed buns this morning, which is equivalent to two hospital meals."

As soon as Li Aiguo saw the nurse, he smiled.

This nurse turned out to be Xiaoyun. When she married Zhang Mingze, a railway police officer, Li Aiguo attended the wedding as a matchmaker.

"How is Mingze these days?" Li Aiguo greeted Xiaoyun with a smile.

"Same old, Driver Li, you screwed me over so badly."

"why?"

"Zhang Mingze only stayed at home for three days last month! I am a new bride, and I have to stay alone in an empty room every night. It's not pleasant!"

Ahem, the little nurse is fierce.

"Okay, I'll give his boss some advice next time to take care of the newlyweds."

"Oh, then thank you." Xiaoyun smiled.

She took Zhang Dahua's temperature, then closed the door and went out.

Li Aiguo put the gift on the bedside table.

"Maltese, tsk, this stuff is too sweet. Banana? That's more like it, Driver Li, you're the driver now, you're pretty rich."

Zhang Dahua herself is a carefree person and has never treated Li Aiguo as an outsider. She pouted while rummaging through the bags.

When Zhang Dahua saw the dozen or so big white buns, his eyes lit up.

“You still understand me as a patriot!
But I'd like you to hide the steamed buns under the bed for me.

That little nurse was really fierce! If she saw it, she would definitely confiscate it.”

"You, can't you eat less steamed buns?" Li Aiguo couldn't understand Zhang Dahua, and threw the bag under the bed with a smile.

Afterwards, he introduced Chen Xueru to Zhang Dahua.

When he married Chen Xueru, Zhang Dahua was driving. He just asked someone to deliver the gift money and did not attend the wedding.

Meeting Chen Xueru for the first time today, Zhang Dahua exclaimed: "Aiguo, I heard that you married a beautiful wife. Today I see that she is indeed as good as her reputation. But..."

Chen Xueru was curious when she heard this: "But what?"

Zhang Dahua puffed out her chest and said, "You're too thin. A real woman should be like me!"

She rolled up her sleeves and clenched her fists, grunting, her biceps bulging slightly.

"See? I can lift a sack weighing more than 100 kilograms by myself. How about you?"

Li Aiguo: "."

Chen Xueru looked at the burly Zhang Dahua and nodded in agreement.

Li Aiguo could understand the two people's train of thought.

The great man proposed the slogan "Women stand up and hold up half the sky!" Every word is perfect.

It is not that women can "occupy" half the sky, nor that women can "enjoy" half the sky, but that women can "hold up" half the sky. This reveals the dialectical relationship between power and obligation.

Social status is not a "gift" obtained through "struggle", nor is it a compromise among various forces, but rather the real result of labor.

This honor does not belong to those sophisticated egoists.

Rather, it belongs to the first female soldier, the first female train driver, the first female tractor driver, the first female pilot, the first female tank driver, and the vast number of women they represent who have been freed from the production relations of feudal agricultural society. It is a victory of revolution.

In this era, so-called beauty belongs to working women like Zhang Dahua.

Chen Xueru envied Zhang Dahua for having the courage to work on the train. The two quickly became friends and started chatting enthusiastically.

Li Aiguo also asked about the entire process of the accident.

"Aiguo, you know, after I was hit, my biggest regret was that I died before I could become a train driver. It was such a pity."

Zhang Dahua still feels scared when she talks about what happened back then.

"Don't worry, with your level, you can become a train driver sooner or later."

"Aiguo, I heard that you have made a lot of good things. The "Go Train" has saved many train drivers. Can you help improve the road sign machine?"

Zhang Dahua looked at her former classmate and said with some depression: "You also know that there have been so many accidents due to the road signing machine in recent years."

Even semi-automatic road sign machines require manual operation and assembly.

Accidents often occur when exchanging road signs, and sometimes staff are even left hanging on the train.

"The road sign machine is almost perfect. If we want to change it, we can only use electronic signals, which is extremely difficult," Li Aiguo said after thinking for a moment.

The Railway Research Institute is planning to build the Baoji-Chengdu Railway.

This electrified railway should use some kind of electronic signal machine obtained from the Russians.

However, Li Aiguo was not clear about the specific situation.

Zhang Dahua thought that Li Aiguo was in a particularly difficult situation and could only sigh helplessly.

Li Aiguo stayed in the ward for nearly half an hour.

As soon as I left the ward, I saw a tall and thin young man hurriedly pushing open the door of the ward carrying a net bag of apples.

"Hey, this person should be Zhang Dahua's boyfriend. He seems to be a train attendant." Chen Xueru looked like she was enjoying herself.

"Zhang Dahua even told you this?" Li Aiguo asked in surprise.

"Dahua and I are good sisters!" Chen Xueru raised her head proudly, "Dahua is still hesitating whether to agree to him."

Well, those female comrades have formed an alliance, so let’s stay out of this matter.

Li Aiguo was not interested in these things themselves.

After returning home, he studied hard and focused on solving the communication problem in blocked railway sections.

The next day is the day for driving.

After a busy day, Li Aiguo originally planned to go to Changxindian Locomotive Factory to visit Yang Xingzhai.

However, he was notified to attend a safe driving meeting in the education room of the locomotive depot.

Director She from the Education Office reported on the recent production safety accidents that occurred on the railway.

Train No. 1276 was dismantled at Langfang Station. At 10:20, after the shunting master Chen Menshi conveyed the dispatching plan, he stood on the right side of the running direction at one end of the locomotive water truck and started working.

When the locomotive was running and he was moving to the left around the hook, his right foot missed the target and he fell into the track, breaking both his legs and leaving him disabled.

After copying the train numbers on track 3, Fengtai Station dispatcher Lu Yongyou jumped off the flatbed car on track 4 to return to the station when he was hit on the head by train No. 1263 passing by track I. After rescue, he is no longer in danger of death.

When Yi Ruiping, the deputy driver of a freight train at Qinghe Station, was using the sign machine, he used too much force and the sign flew out of his hand and hit the station attendant, causing one person to be injured.

Regarding the first two accidents, train drivers and employees said that as long as they take effective precautions during stops, eliminate the mentality of relying on luck, and ensure driving safety, similar accidents can be avoided from happening again.

But when it came to the road visa machine, they all smiled bitterly and shook their heads.

When the automatic road sign machine is handing over the road sign, the co-driver has to lean out of the car window, which is greatly affected by the speed of the car and the surrounding environment, and it is easy to get into an accident.

Cao Wenzhi's co-driver once injured his wrist because of a road sign.

Li Aiguo sighed in his heart. Another road signing machine had an accident. It seemed that he really had to go to the Railway Research Institute.

After work, Li Aiguo handed the task of writing the safety work experience to Huang Jing, and rode his bicycle to the Railway Research Institute.

Liu Guozhang was busy with the preparatory work for the Baoji-Chengdu Railway in his office. He invited Li Aiguo into his office and poured him a cup of tea.

"Aiguo, why are you here? Have you figured it out and decided to work at the institute?"

"Teacher, you have an important position now, and as a student, I should naturally help you. It's okay for me to just work in the institute. You also know that I am a lazy person.

I would like to ask you what kind of signal sign is used by Baoji-Chengdu Railway? "

Li Aiguo drank his tea and said with a smile.

Liu Guozhang was not disappointed when he heard this. He stood up, took out a document from the cabinet and handed it over.

"The Baoji-Chengdu railway project is extremely important, so the ministry plans to spend a lot of money to import the single-track DC track circuit technology from the Russians. This is currently the most advanced railway automatic signal technology in the world."

The earliest prototypes of railways did not have track circuits.

However, as the number of train pairs increased and the operating speed increased, the train accident rate began to increase rapidly.

There are two ways to clarify the driving conditions within the blocked section.

One method is to use a road sign machine to determine the driving status through road signs.

The second type is high-tech - track circuit.

This is an electrical circuit that uses two steel rails of the railway line as conductors and uses lead wires to connect the power supply and receiving equipment.

It monitors whether the railway line is idle and automatically and continuously connects the train operation and signal equipment to ensure driving safety.

Simply put, the rails are treated as wires and the position of the train is determined by the current flow.

American Robinson invented the open track circuit in 1870.

In 1872, a closed-circuit track circuit was successfully developed and first used on the Pennsylvania Railroad in 1873. From then on, automatic railway signals were born.

Our country also used railway automatic signal technology before liberation.

For example, in 1924, automatic blocking was built between Dalian and Jinzhou and between Shenyang and Sujiatun, using an AC 50Hz binary, three-way phase-sensitive track circuit.

But the disadvantages of high technology are also obvious.

Because electrical signals are transmitted through rails.

The rails have high resistance, long distances, and high interference, and are easily interfered by two-wire and one-ground transmission lines.

So this technology is not practical.

After liberation, the country abandoned the railway automatic signal technology and adopted the method of railway sign machines.

International research on automatic railway signaling technology has not stopped.

The railway technology research institutes of the United States, Europe, and Russia all knew that automatic signaling was the future of train technology, so they spent a lot of materials and money on research and achieved many results.

At present, the most advanced technology is the single-track DC track circuit technology used by the Russians.

However, this technology has a major problem. Because it uses direct current, the broken rail detection performance is poor and "missed reports" are prone to occur.

Liu Guozhang saw Li Aiguo frowning as he flipped through the documents, and asked curiously, "Aiguo, what do you think?"

"This is indeed the most advanced railway automatic signal technology abroad, but it may still be a bit difficult to support the inspection of block sections on an entire line." Li Aiguo answered truthfully.

Liu Guozhang knew that Li Aiguo had done his own research on the technology and nodded, "Yes, some comrades in the department are very optimistic. They think that the Russians have already built several similar lines and have been recognized by international peers, so we can follow their example.

However, I still recommend modifying a small section first as a test.

It’s just that the proposal has caused controversy, and the leaders in the department are now divided on the issue.”

Li Aiguo could understand the department's ideas.

As the first electrified line in the country, the Baoji Railway has been given extra significance and even risen to the level of overall regulation.

In China, once it comes to rectification, the situation is completely different.

Liu Guozhang asked: "Aiguo, you came here today, I'm afraid you have your own ideas, right?"

“Not yet.”

Li Aiguo memorized the technical categories in the information and secretly activated the system.

Open the system panel.

Steam engine driving: 100;

Cooking: 15;

Cycling: 95;

Geological exploration technology: 20;

Criminal Investigation Technology: 61;

Mechanical design technology proficiency: 60;
EMU assembly body technology: 30;

Qian Xuesen Ballistics 100;

Mechanical Skill Mastery: 60:

Hand rub nuke: 0;

Lithography machine manufacturing: 0;

Sow postpartum care: 0;

High-speed rail manufacturing technology: 0;
The current score is 626 points.

Ever since he exchanged Qian Xuesen's ballistics technology last time, Li Aiguo has not spent any points for a while.

I also continued to study the book in my spare time, and thus saved up a lot of points.

Finally I accumulated more than 600 points.

Li Aiguo has now found a small loophole.

That is, once you have the prerequisite technology for the target technology, the system will automatically default.

You just need to spend points to buy new technology.

It's just like playing a game.

You have obtained a [Broken Wooden Stick], which can be used to hit [Crayfish].

Then the dog system will give you some free reinforcement coupons.

You feel like you got an advantage, so you strengthen the [Broken Stick] into a [Refined Staff], and then you can fight the [Mutated Crayfish].

Next, you get addicted and spend money.

Strengthen [Six Combinations of Demons] to fight [Thunderbolt Crayfish]

Strengthen [Heaven Collapse and Earth Splitting Prajna Thunderbolt +12] to fight [Overlord Sunset Shrimp]

Getting something for free is fun for a while, getting something for free is fun for the rest of your life!
Li Aiguo now has the Russians' automatic signal technology for free, and then he operates the system and searches for technologies related to railway automatic signaling in the system.

Soon, a line of blue text appeared under his eyelids.

轨道技术：【直流脉冲式轨道电路（100分）、驼峰轨道电路（100分）、阀式轨道电路（100分）、25Hz长轨道电路（100分）、相敏轨道电路（100分）】

交流计数电码、移频、高频轨道电路及计轴设备技术（本制式相配套的机车信号）：【移频轨道信号技术（100分）、UM71无绝缘轨道信号技术（100分）、ZPW—2000A型无绝缘轨道信号技术（100分）】

Sure enough, he had the two front-end technologies of the Russians, the AC/DC track circuit and the AC counting code track signal technology, which saved a full 200 points!

It’s so happy to be a freeloader.

Li Aiguo recalled the railway automatic signal technology of his previous life, and finally selected the ZPW-2000A non-insulated track signal technology with DC pulse track circuit.

It’s not that these two technologies are the best.

Rather, they are low-cost, can be produced using current industrial standards, and can be promoted on a large scale.

After shutting down the system, Li Aiguo looked up at Liu Guozhang and said, "Now we have it. Teacher, have you ever heard of a DC pulse rail circuit?"

(End of this chapter)