The Jersey Line was built in the 70s, more than 30 years have passed, and most of the sleepers in the station yard are wooden sleepers, especially the sleepers of turnouts, and in the 70s, turnouts with concrete sleepers are rarely used.

As for the section between the two stations, after nearly a decade of replacement, most of the wooden sleepers have been replaced with concrete sleepers.

The purpose of this station renovation is not only to extend the station to both sides and complete the 1050 transformation, but also to replace all the remaining wooden sleepers in the station with concrete sleepers, so as to facilitate the maintenance of the public works section in the future.

In the Jersey line, concrete sleepers are divided into three categories, one is called the fork sleeper, as the name suggests, the fork of the sleeper, is the meaning of the turnout, that is, the sleeper specially used by the turnout, this part of the sleeper rail surface is much wider than other sleepers, the height is also higher than the general sleeper, generally about centimeters, most of the length of the sleeper, are more than the ordinary .6 meters of sleeper.

The second type of sleeper, called the three-type sleeper, is a kind of sleeper mixed between the fork sleeper and the ordinary sleeper, this kind of sleeper, generally as a fork sleeper and ordinary sleeper an excess.

The place where the three-type sleeper is used is relatively small, concentrated on the protective rail before and after the fork, that is, from the fork sleeper, can not directly transition to the ordinary concrete sleeper, according to the requirements of the specification, the three-type sleeper must be used to do an excessive.

The three-type sleeper before the fork, according to the requirements of the Jersey Line station reform, uses 1,760 sleepers for one kilometer of the main line, and the 5-meter protection rail before the fork is 44 three-type sleepers.

However, when it comes to actual use in the field, we only need to use 9 and the other five, and we can use ordinary sleepers, these five ordinary sleepers, as an excessive.

In the railway code, there is a requirement that two different types of sleepers are excessive, and five sleepers must be moved from this joint to one side instead of two rail joints.

For example, two 5-meter rails are connected, and the 5-meter rail on one side of the joint uses a three-type sleeper, and the 5-meter rail on the other side uses ordinary sleepers, and we can't divide it from the joint.

It is necessary to let ordinary sleepers replace the five type three pillows that are jointed, so as to meet the specifications.

Not only the three-type pillow is used before the fork, but the three-type pillow is used after the fork, but the number of three-type pillows used after the fork is different. If the people who have worked in the station must know that a group of turnouts, its fork sleeper, is not ended after the turnout, there are 19 turnout sleepers after the turnout, and after these 19 turnout sleepers, the three-type pillow is used.

Of course, after the fork, it is also necessary to use five as a type three pillow and the transition of ordinary sleepers.

The last type of sleeper on the Jersey Line, that is, the ordinary sleeper, is called a new type of sleeper.

The difference between the new type pillow and the type three pillow is that the type three pillow pillow has a wider pillow surface and is heavier than the new type pillow.

For the preparation of new sleepers, as long as you know the length of the laying rails, and then according to the main line of 1760 per kilometer, the station line of 150 per kilometer, you can quickly calculate the amount of new sleepers.

The calculation of rail sleepers can be described as the simplest preparation, and the most troublesome is the preparation of various accessories.

If a rail is to be connected to the sleeper, it must use some fasteners, and you can't just put the rail on the rail and the train will walk on it.

From the bottom up, the first item is the rubber pad.

Rubber pad plate, divided into P50 rubber pad plate, P60 rubber pad plate, respectively for 50, 60 rails.

Different rails use different rubber pads, after all, the width of the bottom of the rail is different.

The rubber pad is placed at the bottom of the rail, separating the rail from the sleeper, and when the train walks on it, it plays a certain cushioning role, so that the vibration of the train can reduce the damage to the sleeper.

The rubber pad plate is up, that is, the baffle seat, the baffle seat can be used on the front and back, the model of each side is different, like the baffle seat used on the Jersey line is -4 type, the inner side of the rail is typed, and the outer side of the rail is used 4 type, as long as the baffle seat is used in reverse.

Of course, the baffle seat is also a different type of rail, and all kinds of rails are matched, a sleeper has four baffle seats.

On the baffle seat, is the gauge baffle, domestic railways, and even many European, American and Russian railways, the distance between the two rails is called the gauge, the so-called gauge, is the spacing between the two rails, which is also the spacing of the train axle.

Normally, the length of the gauge is 145 mm, and in rare places the gauge is not this number, which is why domestic trains can enter Russia.

Since the gauge is 145mm, how to ensure this spacing? In addition to the sleeper design, the gauge baffle plays a decisive role at this time.

The so-called gauge baffle is to use this baffle to control the distance between the two rails to ensure that the distance between the two rails is 145mm, so that the train will not fall off the track and there will be derailment.

On top of the gauge baffle, there are elastic bar fasteners.

Elastic bar fasteners are further divided into elastic bar type 1 fasteners and elastic bar fasteners.

Among these two types of elastic fasteners, the elastic bar fastener is only B type, and the elastic bar 1 type fastener is not only the B type fastener, but also the elastic bar 1 type fastener A type.

The spring bar type fastener type B is used on the P60 rail, while the spring bar type 1 fastener is used on the P50 rail, the difference between type A and type B is that type A is used on the two sleepers on both sides of the joint, and type B is used on the sleeper in the middle of the joint.

For example, if two P50 rails are connected, then the two sleepers on both sides of the joint need to use elastic bar type 1 fastener type A, and the rail in the middle of the rail should use type B.

Calculate the number of snap fasteners, multiply the number of sleepers by 4 to get the number of snap fasteners.

Among these fasteners, the last one to mention is the threaded road stud, the so-called threaded road stud, that is, there are four holes in the sleeper, you need to use a long threaded road stud to insert it, tighten the screw, play a role in stabilizing.

We are accustomed to using a sleeve to calculate the unit of threaded road studs, because when preparing materials, a set of threaded road studs, including threaded road nails, nuts and gaskets, these things are called a set.

The connection between the rails and the sleepers relies on these parts to control the gauge and alignment of the line, so that the train can run smoothly on it.

The rail and the sleeper are connected in this way, but the connection between the rail and the rail also needs accessories to connect.

On the railway, the connection between the rails, where there are joints, are all using fishtail splints, seamless line direct welding, no need for fishtail splints, according to the different rail models, fishtail splints are also divided into P60, P50, P4 and other types.

After the preparation of one item of accessories, Shu Chengyou prepared the materials for the anchorage of the sleepers, knowing that it was more than one morning before all these things were finished.

After the preparation, Shucheng reviewed again, and after making sure that it was correct, he turned off the computer and went to bed, and prepared to send the material preparation list to the technical department of the project department tomorrow, so that the technical department could review it again and print it out and hand it over to the material department.