Liang Yuan patted the drawings on the table and said, "Uncle, it's time for the 25s car to go to Beijing."

Liang Haiping nodded and said, "Director Liu said that he would change it if he had enough marshalling. Yesterday he also said that we should speed up production and try to replace all four marshallings who came to Beijing after the New Year."

Liang Yuan smiled and said, "Uncle, do you still remember the electrical serra door I told you about? Lao Su and I are doing this now."

"Xiaoyuan, why did you think of this?" Liang Haiping asked in confusion.

"Of course it's for a bet." Liang Yuan said without hesitation: "I plan to have a 25s car under the car with my uncle and add it to t2728 times, but there must be a suitable reason not."

Liang Haiping laughed and said, "Xiaoyuan, this is obviously cheating."

Liang Yuan and the two little girls bet that they could take the double-decker train when they went home during the Chinese New Year, rather than changing the entire marshal. Liang Yuan followed the flow and used the entire marshal to confuse the sight of the two lolitas, increasing the difficulty of the matter, and then watched the two lolitas jump into the pit.

Liang Yuan smiled proudly and said, "They two have never beat me since kindergarten."

Seeing Liang Haiping and Liang Yuan laughing happily, Su Liang Yuan asked about the incident curiously. Liang Haiping told the bet between the two little girls and Liang Yuan. After hearing this, Su Liangyu laughed and said, "I said why Xiao Yuan is so diligent today."

"In a few years, electric sirens can be said to be a necessity for quasi-high-speed railways, high-speed railways, urban subways, light rails, luxury highway buses, and minibuses." Liang Yuan said while laughing.

Liang Haiping didn't know much about electric serra doors. Su Liangyu was very familiar with this kind of thing abroad and nodded and said, "As early as five years ago, the newly produced highway passengers, minibus, and rail transit vehicles abroad have begun to use electric doors of this structure in large quantities."

"You must have not noticed it, uncle, the t1112 times from Shengjing to Beiping and the t1314 times from Wusong to Beiping both depart at the two stations of Beiping Station. The departure time of the two trains is 6:32 pm and the other is 6:35 pm. The t1112 times takes three minutes early."

"Old Liu made the Liaodong Peninsula so luxurious, and it was not without the signs of leaving the Shanghai Bureau's t1314 times. Uncle, you said that you would replace the t1112 times with an electric door. Will Lao Liu support the new electric door?" Liang Yuan said with a smile.

"You are the trick of fighting the Shanghai Bureau?" Liang Haiping exposes Liang Yuan's little thoughts.

The "grudges" between t1112 and t1314 have to start from the founding of the People's Republic. In 49 years, with the loud voices of great men, the New China stood up in the ruins and rubble. At that time, the railway system in the northeast of the Republic was the most perfect. In addition, the entire industrial foundation of the Republic was in the Northeast when the founding of the People's Republic was in the Northeast. Shengjing was a representative city of industrial base. The state awarded the honor of one and two express trains to the passenger transport group from Shengjing to Peiping. After all, it was great and glorious. The correct China** is the vanguard of the working class. How could it be that it would not grant honor to its mother's family?

Although Wusong at that time was able to surpass the eight streets of Shengjing in terms of urban scale, prosperity and popularity, it was a pity that Wusong, which had not passed through the Three Anti-Five Anti-Japanese Movement in the 1950s, was still a distribution center for petty bourgeoisie and imperialist compradors and speculative merchants, and had to settle in the number of trains three times and four times.

Interestingly, with the changes in the political climate of the Republic, the honors of the one and two express trains from Shengjing to Peiping were handed over to the passenger transport group from Peiping to Changsha. The numbers of the three and four express trains from Wusong to Peiping were handed over to the international train group from Peiping to Moscow. The pair of brothers in distress became 1112 and 1314, continuing the previous "grudges".

This healthy competition lasted until the 1990s. With the decline of the country's vigorous development of old industrial bases in Pudong and Northeast China in the early 1990s, the winners and losses gradually became clear. The economic differences made both sides move further and further. By the mid-1990s, 1,112 times were no longer able to keep up with the pace of 1,314 times.

After entering the new century, with the completion and operation of the Beijing-Shanghai High-speed Railway between Peking and Wusong, 1,314 times turned into g1,314 times with a speed of 380 kilometers per hour, while the old 1,112 times continued to run at a speed of 160 kilometers per hour, staggering between the Baishan Black Water and the Yanzhao land.

In the 1980s, the development level of urban agglomerations in the Yangtze River Delta and the Bohai Rim urban agglomerations was basically the same, and the t1112 times and t1314 times were just equal. If it were just air-conditioned double-decker buses, for the Shanghai Bureau, it would be hesitant to replace the t1314 under which the same air-conditioned buses were also air-conditioned buses. After all, the 25S undercarriage has not yet passed the 300,000-kilometer fixed operation and routine dismantling (Note 1).

But if Liang Yuan draws out the electric door, it will definitely become the last straw that crushes the camel. You can imagine it with your eyes closed. It is also about to leave. While reaching out and pressing the button, the door will automatically close. While under the nose of the old enemy, you will put down the flipboard first. When you close the door, you have to take out the key and twist it a few times, throwing your face under the eyes of the Ministry of Railways. With the mouths of the staff of the Beijing Bureau, the general director of the Shanghai Bureau will not know what it will be like. If this situation really happens, it is absolutely impossible to accept that the Shanghai Bureau's mentality of claiming that I am the best in the road in terms of vehicle equipment.

As a railway family member, Liang Haiping knew very well about the various rumors and wild jokes between various road bureaus. When Liang Yuan said this, he guessed Liang Yuan's little thoughts in a blink of an eye.

Liang Yuan is a god and cannot save the decline of the entire old industrial base in Northeast China. In addition to retaining the fire in some industries, avoiding detours, and not being left too much by the rapidly developing international community, what Liang Yuan can do is still very limited in the face of the general trend. Therefore, for Liang Yuan, who intends to change the pattern of China's high-speed railway in the future, the sooner it is to establish a relationship with the Shanghai Bureau, the more favorable it is. The future Beijing-Shanghai high-speed railway will definitely become the pioneer and benchmark of China's high-speed railway.

Before the behemoth named Mitsui of the island country on the other side was aimed at China's high-speed railway, the time and space for Liang Yuan to lay the foundation will not be too long, too much.

"But Xiaoyuan, the door you made is not the same as the common electrical sled door." Su Liangyu said as he gently tapped the drawing with a ruler.

There are two types of sable doors. One is to open the inner door, and the start rear door is recessed into the inner compartment, and then move parallel. The other is to open the outer door, and the start rear door is protruding outward, and then move parallel. For railway vehicles around the world, the inner open sable doors are only configured from the Shinkansen in Japan from the high-speed train. Before the start of operation, almost all sable doors were open.

Before introducing high-speed rail, China Railway introduced open-air electric slid doors abroad and carried out large-scale application on China Railway.

For external open sled doors, there is a fatal weakness in using them on China Railways, that is, the entire door can only bear a weight of 75 kilograms after closing. After exceeding the load-bearing range, the door is very likely to fall off the car. However, for internal open sled doors, there is no such weakness. Unless the entire door is broken, it will not fall off the car.

Liang Yuan's previous life was held in Kunming in the 1990s. It happened to be the first generation of domestic production. The power was concentrated to pull the internal combustion engine unit "New Dawn" down and delivered to the Wusong Railway Bureau for use. At this grand event, the Kunming Railway Bureau proposed to the Wusong Railway Bureau to borrow the "New Dawn" to promote the livelihood of the Kunming World Expo.

After some negotiations, the New Dawn was transferred to the Kunming Road Bureau to transport passengers visiting the Expo. For China Railway, train overloading is the norm, and not overloading is a strange thing. Therefore, during a certain operation, the entire open-out Sierra door of the "New Dawn" flew out. As for the casualties of passengers, it was very secretive at that time. This is also the tradition of the Republic. On major and festive days, anyone who dares to report such matters involving the face and honor of the Chinese nation, whoever dares to destroy the peace and harmony of the Expo is destroying the stability and unity of socialism.

However, since the Kunming accident, the bottom of the electric slid door produced by the Ministry of Railways has been sprayed with bright red characters on the inside of the slid door, "Slid door is strictly forbidden to squeeze and hold back". This matter was only learned about Liang Yuan's previous life after working in the previous life, he met a friend who worked in the Ministry of Railways' "Corporate Car" Group.

"The farther away from that thing, the better. Sometimes when the electrical failure is made, the sieve door will open automatically for no reason when the train is running. The probability of failure is about 0.09 per thousand. "The engineer of the North Carolina said, "I made this to open inside. The sieve doors Lao Su had seen before should be open outside." Liang Yuan said.

After learning about the accident in Kunming, Liang Yuan deliberately went online to find out the structural diagrams of the two types of sirhang doors for comparison. Therefore, Liang Yuan could draw the general mechanical schematic diagram, but the electrical control part could only be handed over to Su Liangyu.

"Lao Su, the kind of external silo doors abroad are not suitable for domestic use. A train in our country can exceed 300% of the time. Doors such as the New Year holiday must not be squeezed away."

Su Liangyu nodded and said, "I didn't expect the motor control system to be used on the railway first. I thought it could be used on the leafless fan of Xiaoyuan. However, the control accuracy is still a problem at the moment. Before the Lunar New Year, the samples can only be produced."

The switch of the slid door relies on the power of the switch to provide the switch, and the motor controls the action of the switch. Therefore, there are only two core technologies of the slid door, one is the precision processing of the driving air cylinder, and the other is the motor control system.

Liang Yuan smiled and said, "As long as Lao Su can install the sample for 25 seconds before the Lunar New Year, I have a reason to put the bottom of the car on t2728 times. I'm lazy to take care of other things."

Note 1: After running 300,000 kilometers at the bottom of the car, you have to return to the factory for dismantling. After the eight pieces are removed, all structural parts must be subject to metal fatigue identification and testing to test the long-term performance of the bottom of the car.!~!
Chapter completed!