"It turns out that the turnout line in the station yard is so simple. Romance debuted," Xu Jin sighed.

Originally, I thought that the station line was so mysterious and unfathomable, and it was explained by Shu Chengyi, but it seemed extremely simple.

Before Shu Cheng came, except for Lin Xiaoyong, no one else had done the station transformation, and although Lin Xiaoyong had done it, he was not proficient, and he still didn't understand some details.

After all, the chief engineer only cares about the overall situation, and does not care about these details, which are all things that field technicians need to master.

"Then how do you distinguish the front of the fork, the heart of the fork, and the back of the fork?" Zhang Qing also asked.

Now it is rare for Shu Cheng to be on the scene, of course he has to ask more, and even Cai Wu is interested.

Shu Cheng did not explain immediately, but took the three of them to the existing set of turnouts at the scene and said, "Do you see it?" Before the fork, there is a part of the switch, how to find the switch? Just look at the sharp rail, the sharp rail is a part of the switch, the movement of the sharp rail can make the train change lanes, to achieve the turn of the train. The rail seam in front of the sharp rail is the joint between the rail and the rail, which is the front of the fork. ”

Shu Cheng said, and explained to Zhang Qing and Xu Jin on the spot.

To put it bluntly, ordinary people go to the railway and see that there is a place where the turnout can be moved, and this place is about 3 meters away from the front of the fork.

People who are not familiar with the railway will definitely think that the train is the driver turning, in fact, there is no steering wheel on the train, and which line he takes, it is controlled and directed by the railway station, which has nothing to do with the train driver, but the train driver can control the speed of the train.

"What about the fork of the heart? How to be sure. Xu Jin and the others became interested and asked.

"Take this group of turnouts as an example, it is the P50-2 turnout, then its total length is the dead number, 37.907m, the distance from the fork to the center of the fork is 6.53m, then it is easy to do, we have found it before the fork, and now we measure 6.53m from the front of the fork, not counting the rail seam, and the point measured out is the center of the fork. Come on, let's measure it. "Shucheng Road.

Saying that, Zhang Qing and Xu Jin, one person and one head, began to measure from the fork designated by Shucheng.

"Remember, the construction on the railway, especially the measuring line, must use an insulated steel ruler, once the two rails are connected together, there will be signal anomalies, and then it will become an accident. "When the two of them were dividing their hearts, Shu Cheng reminded.

Subsequently, the position of the fork was measured, and Shu Cheng used a stone pen to make a mark on the rail.

"This position is the fork of the heart, and then you start measuring backwards from this position to see if there is still 2.054m left." Shucheng Road.

Subsequently, Zhang Qing and the others complied according to Shucheng's method.

"That's not even a fraction of a loss!" Xu Jindao.

"That's no problem, the thermal expansion and contraction of the rail is a normal phenomenon. Now you know how to tell the difference between a fork and a fork. "Shucheng Road.

Many things in the engineering unit can't be understood by looking at the drawings, but when I arrive at the scene, I immediately understand, which is why the leaders ask to run to the site more.

"I understand this, but I heard the manager Ren say, what standard is it based on when laying in place?" Zhang Qing expressed the doubts in his heart.

Shu Cheng explained: "For example, this group of turnouts, laid in situ, is to keep the center of the turnouts unchanged. For example, two sets of turnouts, both are a group of P50-9 turnouts, and a group of P60-2 turnouts should be laid, and it is obvious that the No. 2 turnout is longer than the No. 9 turnout. At this time, we must first find out the center of the No. 9 turnout, and then measure the length from the center of the 2 fork to the front of the turnout, which must exceed the position before the No. 9 turnout. But it doesn't matter, we just need to make sure that the fork is not moving, and the fork extends forward, it's that simple. ”

"Oh, I finally understand, the station pay-off is also the principle, because the turnout center on one side remains the same, so we use the existing turnout center position to use the total station to release all the turnout centers on the other side." Xu Jin drew inferences.

"That's right, that's what it means, now let's go to the big mile, according to my method, you test it first." Shucheng Road.

This thing, theoretical knowledge sounds very simple, but you have to do it yourself more to really understand it and become your own thing.

"Of course, if it's a new line, it's generally a coordinate to set the turnout." Shu Cheng added.

In fact, the turnout of the existing line transformation can also be used to pay off the line after the coordinates are calculated.

"Minister Shu, I didn't expect you to be quite good, it seems that you have really learned a lot over the years." Cai Wu quipped.

"Hehe, it's not that Mr. Cai taught you well, but I belong to half of your master!" Shu Cheng patted his ass.

"Fuck off, who is your master, don't pat yourself." Cai Wu scolded with a smile.

Subsequently, the four of them got into the car and came to the side of the big mileage, there are no houses on this side, and there are crops on both sides, but fortunately, the roadbed on this side is not wide, and there is no need for additional land acquisition.

Next, Zhang Qing and Xu Jin, according to Shucheng's method, found out the front, heart and back of the No. 2 and No. 4 turnouts of Damile, and marked them with a stone pen on the inside of the rail.

"Okay, now you take a person, go to the platform to erect a total station, first use the coordinates of the No. 2 turnout center to hit out with the total station, and then go over a small mileage, and then hit the coordinates of a point, according to the Pythagorean theorem, calculate the distance between these two points, and see how much difference there is from the center of the turnout, if it is not enough, it is best to use a ruler to pull, it is best to control zhì within 50 meters of a ruler, and the energy of a foot is finished, so that the error is smaller." Shu Cheng arranged.

In the face of Shucheng's arrangement, Zhang Qing and Xu Jin were very active, and in the end, Zhang Qing went to set up the instrument, and Xu Jin helped the rearview mirror.

Before coming to the construction site, Zhang Qing and Xu Jin did not think that Shucheng was very good, although Shucheng enjoyed the treatment of ministers, they were respectful on the surface, but in their hearts it was not.

Those who do engineering, especially technicians, as long as they have some ability, which one does not have some arrogance.

Unless you can suppress other people in terms of technical ability, no matter how hard your relationship is, others will despise you from the bottom of their hearts!

However, after Shu Cheng's explanation just now, Zhang Qing and Xu Jin not only knew how to recognize the turnout, but also learned how to set off the turnout, and the whole teaching process took less than five minutes!

They know very well that although it is easy to learn, it is difficult to explain so thoroughly unless you really understand people.

And looking at the appearance of Shu Cheng, he does know how to change the station, and he still has a lot of places in the future, and he must learn from Shu Cheng, thinking of this, the two of them worship Shu Cheng even more.

Learning things, such as eating, it is impossible to become a big fat man in one bite, so Zhang Qing and Xu Jin decided that they must study hard with Shu Cheng and seize this rare opportunity.

In about ten minutes, Zhang Qing set up the total station and motioned Xu Jin to set up the rearview mirror.

After reading this record, Shu Cheng and the others went to the small mileage side, measured a coordinate, and marked the measurement place.

The result of the subsequent calculation is that more than 15 meters to the small mileage, which is the position of the center of the turnout.

This is simple, directly use an insulated steel ruler to measure this distance, and the position of the center of the fork will be determined.

According to Shucheng's requirements, all the mileage of 20 times is written on the inside of the rail, because you forget to bring paint when you go, otherwise, you can mark it especially on the rail, and then write the mileage on the sleeper.

After doing this qiē, the next time you come to measure the land, you can directly measure how many meters you go out from this mileage according to the marked mileage, which is simple and convenient.

"Zhang Qing, you and Xu Jin should measure the existing section, go back and calculate the fill and excavation, and send it to Minister Liu of the Budget Department when the time comes." After marking, Shu Cheng said to the two.

Because the mileage is marked, the general position of each group of turnouts will come out, then the position of the roadbed filling can also be determined, because these miles are on the drawings, and now the mileage is marked on the rails on the site, and the mileage is directly found.

After Zhang Qing and Xu Jin finished measuring, it was already half past eleven at noon, and it was obviously too late to go back to eat now.

In addition, in the afternoon, Shucheng was also ready to investigate the on-site track situation of Miaozhuang, so he was too lazy to go back to the project department.

Cai Wu directly took the three people and the driver, found a restaurant nearby, and had a simple lunch.

After lunch, it was not yet one o'clock, Cai Wu and Shu Cheng had the habit of taking a nap, so the driver parked the car in the station, lay down on the car to rest for a while, and prepared for the afternoon station investigation.

And Zhang Qing and Xu Jin were also full of expectations for the station investigation in the afternoon.