C24 The Soul of Technological Data

Following the division of labor in Su Jianguo's dormitory, Xiao Fang and Xiao Liang separately found some of the data on the new line. However, they only found a portion, not all of it.

This was because the current website of Hangzhou's technical school had the authority to download and read too few theses.

At this moment, Xiao Liang seemed to have thought of something and said with a smile, "Oh right, I remember my mom saying that the Hangzhou City Library is open to the public. There are many theses that can be downloaded. "

"The Hangzhou Library's microcomputer room is open to the public?" Su Jianguo was pleasantly surprised.

"Yeah. However, for society's sake, it's slightly more expensive than our school's microcomputer room. " Xiao Liang's next sentence caused Su Jianguo's heart to feel somewhat cold.

He was just a poor student. His parents did not have much income, and his younger sister and younger brother went to school. How could he have the money to download the information?

"But my mom got a book borrowing card. Why don't I ask my mom to download some when I go home?" Xiao Liang's family was quite wealthy.

"If that's the case, that would be great. " Su Jianguo nodded.

A few days later, Xiao Liang's mother downloaded some theses and printed them out. After that, Xiao Liang brought them back to school.

Su Jianguo looked at the more comprehensive information with a smile on his face. The dorm leader, Xiao Fang, had a reading session and started analyzing the train with Xiao Liang and Su Jianguo.

"Look here. The Xin Gan line 0 series, 100 / 100N series, and 200 series train units are called the first generation of Xin Gan line train. The converter used is a rocking pillow converter. The Japanese national railway JNR was privately owned by the Japanese railway company JR in the late 1980s. The DT202 converter used for the 100N series is named WDT202. " Xiao Fang pointed at the thesis and said.

"I remember that during class, the teacher said that the DT201 converting frame is mainly used to protect the northeastern winter snow environments. It seems that this DT201 and 202 are very important. Xiao Fang pointed at the thesis and said, I remember that during class, the teacher said that the DT201 converting frame is mainly used to protect the northeastern winter snow environments. It seems that this DT201 and 202 are very important. We should start from here to understand the technical principles behind the steering wheel. " Xiao Liang said with a straight face.

"When Teacher Wang Ping was in class, he said that JNR had developed a DT9001 ~ DT9006 experimental steering wheel. The key is to conduct experimental research and comparisons on a few typical axis. Finally, they chose the dual-side rotor localization method from Germany, also known as the LS style, and improved it. By using the spring pulling board and rubber lining combination, the stress level of the pulling board would be higher than the German MDMINDEN. After a long period of development and improvement, the Ming Deng transition draping board has been reduced by 30%. " In the end, Su Jianguo was still an outstanding student in the technical school. He remembered every single lesson taught by his teacher.

[Because it is a technical field, it is based on the literature published by Yu Da Alliance, 'Japan New Line Motor Group Transfers to Research and Development History. '

"[That's right, a steering wheel is a very important part of a train. ] The first generation of the train group's technology had always limited room for improvement. Many foreign literature reports also said that they needed to solve a series of problems such as overloading the steering wheel and its complex structure. It seems like this is where the technical difficulties lie. " Xiao Fang nodded.

"My friend said that the 300 units that are currently being developed are the second generation of the train team. Look here, Japan is planning to use DT203 as a transit drive. Then what is the advantage of this DT203? Perhaps it will become a key point for us to conquer the second generation train group. " Su Jianguo agreed with Xiao Fang's answer.

"The structure of the rock-head steering wheel is also self-weighting close to 10T. It is not conducive to reducing energy consumption and maintenance. Therefore, this place might become a very crucial step in our maintenance process. " Xiao Liang pointed out another technical port.

"Yes, it's also a problem for the rocking chair to change direction. " Su Jianguo started recording.

"Look here. Here is a description of 1970. " Xiao Fang pointed out a place.

"Let me see. . . In 1970, when the experimental vehicle used the DT9010 to conduct a circuit test, due to the excessive mass under the spring, the PS pillowcase was damaged. This kind of balanced beam and the attached orbital vortex brake device significantly increased the quality of the lower part of the spring. It's not conducive to the lowering of the rotation force, so it's destined to not be in the direction of development. After that, he improved the DT9010A steering wheel, although it adopted an IS positioning method. Still can't solve the problem of overloading the rails. " Su Jianguo read the content of the thesis.

"This is. . . " Xiao Liang became excited. "Is there a deeper meaning behind this rail overload?"

"Maybe it's similar to the DT203, but it also has its own unique characteristics. We can take advantage of the public, right?" Su Jianguo seemed to have found a direction.

"Right, right, take advantage of others. " Xiao Liang nodded.

"And this place, according to the experiment results of the DT9011 turn towards the rack, In order to reduce the quality of the lower part of the spring, on the basis of the DT9011 converter rack. . . In December 1971, we tested the quality of the lower part of the middle axis, 1. 1TDT 9012 turning frame, using the hollow axis transmission structure. The mid-axis and the wheel faced each other through a tickle axis transmission, and the mass of the entire gear transmission box was suspended on the framework. Because of this, the turning structure has an additional end beam. " Su Jianguo continued reading as he pointed at the document.

"This means that in the two years between 1970 and 1971, the DT9012 designed Duan Liang. Then, what is the use of this beam? " Xiao Liang had a puzzled expression.

"The experiment of the DT9012 converting frame is carried out in the Shanyang New Dry Projection ~ A New Divine Household. The highest test speed of the line was 286 km / h, which was the highest record at that time. The test of the DT9012 converting frame was carried out in the Shanyang New Dry Projection ~ A New Divine Household. The highest test speed was 286 km / h. The result proved the effect of lowering the quality of the rope. Even though the propulsion force of the rails was lower than before. However, when the speed was above 250 km / h, there would always be an overload of 200 kN on the rails, and it would all happen at the welding part of the rails. Vibrokinesis comfort within the range of 270km / h does not exceed the limit. " Su Jianguo narrowed his eyes. "That's right. Is it a speed increase? "

"Increase speed and increase comfort! That makes sense. " Xiao Liang slapped his thigh, "Looks like reading literature is the best. "

" It's a pity that our school has too few literature. Sigh. . . "Lil' Fang sighed.

"Sigh, this will definitely be perfect. Let's take a closer look at the other items with the age limit and see if there's anything that we can use. " Su Jianguo slowly said.

"Mhm. " Xiao Liang nodded.

"In February 1974, the 961 experimental train carried out snow disaster countermeasures on Qizhao Island, New Osaka. It carried out a sun run experiment in the accumulated snow area. 1978, in the Northeast, in the experimental line in the small hill of the New Dry Line. Using 961 and the mass production for the Northeast's New Dry line, the first 962 experimental train to carry out the line test, the so-called mass production of the experimental train first, referred to the experimental train used to verify a fixed product after a variety of options were selected. In the experiment. The 96L experimental train created a record of the highest speed of the railway at 319km / h. The DT9019 converter that the 962 experimental train was equipped with was developed from the Japanese. It is no different from the final DT201 converter. " After reading it, Su Jianguo looked at everyone.

"Therefore, the DT9012 has increased, becoming DT9019. As for the DT9019, it is almost the same as the DT201. Since that's the case. . . Then what changes did the DT9012 make? " Xiao Fang said seriously.

"Here, take a look. . . " Xiao Liang read the document in his hand. "In order to achieve lightweight, light aluminum alloy pillow, air spring top cover, and front cover cover are used. Integrating the thickness of 40 mm and the material is S45C, the overall shape of a hat is used. It improved the efficiency of the braking device; considering the operation in cold areas and snowfall environments, it has been set up with an axis shield that can withstand the cold and snow, a cooler, and so on. "

" We made a light aluminum alloy pillow, and even a braking device? " Su Jianguo was puzzled. "Why did the 300 series also do aluminum alloy processing? Could it be that the aluminum alloy will become the main component material? "

"That's right. The aluminum alloy is light in quality, and it is very durable. " Xiao Fang nodded.

"Looks like this is a big trend. " Xiao Liang pursed his lips.

"In the future, we still need to learn about aluminum alloy and aviation materials. This way, we might be able to build tougher, lighter, and more energy-reducing trains. " Su Jianguo said in a whimsical manner.

However, Su Jianguo did not know that several years later, the materials for China's high-speed rail would indeed be able to compete with aviation materials.

"Let's take a look here. Starting from 1985, Japan's East Sea railway company developed a series of experimental transference racks, DT9024, DT9025, TR9000, and TR9001. " Little Liang was speechless. "How much does this cost? Every year, they start experimenting with transference racks. "

"Don't worry, take a look at the following words. The DT9023 series steering wheel revealed some problems during the experiment. For example, the vehicle had a high-frequency vibration of 8HZ and 22HZ. After investigation, the 8HZ vibration was mainly due to the DT9023 transference rubber spring being too rigid. It was caused by the low resistance from the dropper. 2HZ ~ 22HZ High Frequency Vibrokinesis was caused by the inertia caused by the mass imbalance of the wheel. In the following DT9023C / D experimental steering frame, by improving the air springs, traction devices, and limiting the balance of the wheel, As well as the enhancement of the pillow beam on the upper side of the steering wheel, it has received a certain degree of improvement. " After reading it, Xiao Fang looked at Su Jianguo.

"This means that the high-frequency vibration will cause inertia, and the inertia will cause wear and tear on the steering wheel and the body of the train. That's why we need to increase the air springs and traction devices. " Xiao Fang nodded.

"The traction device! Air spring! Isn't this the 300 series technology? " Su Jianguo immediately reacted and carefully read the paragraph.

"In other words, these are all prepared for the 300 series. It seems like the steering wheel is really very important. Not only does it have to withstand the cold and frost, it also needs to be able to withstand the wear and tear, and it also needs to ensure that it is comfortable. " Xiao Liang sighed. "As expected, his design is more thorough than we thought. "

"One day, we will also design a train that will make the world look at us in a new light. We will even design a train that is difficult to look up to. We will make people admire our technology more than others. We will make them think that we are all good at everything. " Su Jianguo's stubbornness was once again aroused.

"I believe that we will study hard and will definitely be able to do so. However, after looking at the steering wheel today, I seem to have understood something. " Xiao Liang thought of a few things.

"What is it?" Xiao Fang asked curiously.

"Why does Grandpa Deng keep thinking about it after he sits on the new line? He pursues comfort and speed at the same time, while our designers and engineers tend to ignore comfort. " Xiao Liang hit the nail on the head.

"So, we have to work hard towards comfort, stability, and hour speed in the future. " Su Jianguo said.

However, what Su Jianguo did not know was that in a short span of 20 years, China's high-speed rail had become the world's most comfortable and fastest train.

The people of China had achieved the speed and comfort of the train, and they had also displayed these two aspects to the extreme.