How are the rails overhauled? What does track overhaul do

In the past, the maintenance of rails was carried out manually, but now it can be repaired with the help of machines, and the sales of the work will increase a lot. In the early days, a small hammer was used when the rails were overhauled, mainly at night, and the maintenance personnel would judge the state of the rails by striking the rails with a hammer, but this method was very inefficient and required a lot of labor. Therefore, it is now gradually possible to use the machine, which can quickly obtain the test results through ultrasonic testing.

The overhaul of the railroad track is not the same as the elevator, as long as it is regularly overhauled, the rail is basically checked every day, because the daily use of the rail is very large, and if there is a problem with the rail, it may cause a very serious safety accident, so in order to ensure the safety of passengers, the rail must be overhauled every day, and now it is generally used in the way of manual + machine maintenance.

Rail clearance methodWhen the track is overhauled, the distance of the track needs to be detected, the level is checked, and the other is to determine the damage to the rail. In general, the level and rules of the track can be checked manually, and the eye can generally see it, and when necessary, it is enough to use the necessary tools such as a ruler, and if a problem is found, it must be repaired immediately.

In addition, at each railway station, there will be a special rail inspection train, this train will not run to carry passengers, mainly for maintenance. There are special instruments on the train that can monitor the relevant data of the rails in real time, and if any abnormalities are found, they will be immediately arranged for maintenance. Nowadays, it is rare to use a hammer to determine whether there is damage to the rails, and ultrasonic instruments can be used to determine whether there are cracks in the rails.

There is a principle for the maintenance of railroad tracks, which is to be strictly inspected and repaired, and the inspection is very strict, but it is necessary to be particularly cautious when repairing. In addition, there are very few trains running at night, just to give the railway department time to overhaul the tracks.

The maintenance you are talking about is mainly line maintenance and rail flaw detection. One is the maintenance of the geometric dimensions of the line, including adjusting the spacing, level, height, direction, etc. of the two rails, as well as the fastening and integrity of the fasteners (which can be understood as bolts). You can try to straighten two twisted wires with a hammer and keep them parallel to see how hard it is, that's probably what it means.

The usual maintenance standard is +3, -2, which is measured in millimeters. There are a lot of various standards, this will not be posted, if you are interested, you can search for the line maintenance evaluation standards. There is also a kind of maintenance called rail flaw detection, which determines whether the rail needs to be replaced according to the wear and damage of the rail, and there is an instrument to check whether there is nuclear damage in the rail.

It used to be hammered.

There are two main types of rail maintenance: line maintenance and rail flaw detection. Rail flaw detection judges whether the rail needs to be replaced according to the wear and tear damage of the rail, and takes an instrument to check whether there is nuclear damage in the rail.

Manpower maintenance, the workers who maintain the rails will beat the rails every week to make sure that they are firm, and there are all kinds of them.

Summary. Track overhaul is the overhaul of urban rail transit trains, including:

1. Inspect, test, decompose, assemble and debug the main components of the train mechanical system;

2. Inspect, clean, replace and overhaul the key components of the train mechanical system, measure and adjust the key parameters;

3. Use tools and technical means to measure, judge and deal with the failure of the mechanical system of urban rail trains;

4. Inspect and test the functions of the train traction system and auxiliary power supply system;

5. According to the comprehensive circuit diagram, check the status of the electrical components of the traction control loop and the auxiliary control loop, and measure and adjust the electrical parameters of the main components;

6. Use tools and technical means to measure, judge and deal with the fault of the control loop of the electrical system of the urban rail train;

7. Check and debug the performance of the whole train to ensure the state of the train out of the warehouse.

What does track overhaul do

I've received this question of yours and am sorting this out, please wait.

Track overhaul is the overhaul of urban rail transit trains, including 1. Inspection, detection, decomposition, assembly and debugging of the main components of the sail gear rock system of the train mechanical system; 2. Inspect, clean, replace and overhaul the key components of the train mechanical system, measure and adjust the key parameters; 3. Use tools and technical means to measure, judge and deal with the failure of the mechanical system of urban rail trains; 4. Inspect and test the functions of the train traction system and auxiliary power supply system; 5. According to the comprehensive circuit diagram, check the status of the electrical components of the traction control loop and the auxiliary control loop, and measure and adjust the electrical parameters of the main components; 6. Use tools and technical means to measure, judge and deal with the fault of the control loop of the electrical system of the urban rail train; 7. Check and debug the performance of the whole train to ensure that the train is in a state of leaving the warehouse.

We'll be happy to answer for you; The repair process of urban rail transit vehicles is roughly divided into train inspection (daily inspection), monthly inspection (bi-monthly inspection), scheduled maintenance, frame repair and factory repair (also known as overhaul). Maintenance system and management project 1 task: the maintenance management task of urban rail transit vehicles.

China's rail transit is in a period of rapid development, the later maintenance of vehicles will have greater pressure, long-term health monitoring of key components of the vehicle, through the scientific and reasonable integration of various mature detection technologies and the formation of an effective condition monitoring system, applied to vehicle operation, maintenance, overhaul and other stages, taken"It is mainly based on state preventive repair, and a variety of maintenance methods coexist"The maintenance mode can not only reduce the failure rate, but also effectively control the maintenance cost and cycle, and improve the overall operation level of the vehicle.

The continuous development of urbanization construction has made China's rail vehicles have been developed to a great extent, in this process, the scientific application of vehicle maintenance mode can ensure the orderly operation of vehicles, and it must be analyzed in depth. This article begins with an analysis of vehicle maintenance.

Thanks to the rapid economic and social growth of China and the increasingly congested ground transportation situation, rail transit is being built by more and more cities. But in fact, the construction and operation of urban rail transit requires a lot of money, and vehicle maintenance is one of them.

Urban rail transit plays an important role in alleviating the pressure of urban traffic, but because of its own special operating environment, the reliability and safety of operation have always been of great concern to people. Therefore, the actual operation of urban rail transit vehicles.

Hello, the repair process of urban rail transit vehicles is roughly divided into train inspection (daily inspection), monthly inspection (bi-monthly inspection), scheduled maintenance, frame repair and factory repair (also known as overhaul).

1.At present, subway trains generally use () braking system.

2.() It is a vehicle maintenance base for vehicle frame repair and overhaul.

3.The erection and overhaul of the vehicle adopts the maintenance mode of () as the main and () as the auxiliary. ()4.The most widely used traction motors for metro urban rail transit vehicles are:

The train is one of the ways we can travel for long distances, and it is interesting to look at the scenery outside the window on the green train, but during the long journey, have you ever wondered how to ensure the safety of the train with such long tracks?

1. Detection of cold slip locomotive Among the locomotives running on the rails, there is a locomotive named "cold slip locomotive". Engineers use it to inspect the track system, and after the cold slip test is completed, the official passenger train can enter the main line and start the commissioning of the train.

The cold slide locomotive is equipped with a variety of sophisticated sensors that can detect the status of the rails along the line, not only to detect physical obstacles on the tracks, but also to identify the operating status of all equipment in the track system. If an abnormal state is found, the maintenance personnel will be notified to come for maintenance, and emergency braking will be carried out when encountering large obstacles to avoid accidents.

Second, railway workers rely on instruments for daily maintenance, although the cold slip locomotive technology is advanced, but it is impossible to rely on it for testing every day. Therefore, the main maintenance of track safety is the railway workers who work diligently every day, and they rely on instruments and manual labor to overhaul the safety of the section of the track for which they are responsible. Once the problem is found, it will be fed back in time and handed over to professional personnel for maintenance.

In addition to this, the absence of weeds on the tracks is also a credit to the railroad workers.

3. In front of the locomotive, there will generally be a special obstacle eliminator, and the head car has a main obstacle eliminator, an auxiliary obstacle eliminator and a bogie obstacle eliminator, and the existence of these devices can also reduce the probability of accidents or reduce the harm of accidents to a certain extent.

The maintenance of the railroad tracks is not as easy as we thought, and the reason why we can enjoy the distant scenery from the train is because there are people behind us to protect our safety.

The rails are regularly overhauled in sections. Each section of track will have a specific maintenance personnel who will be inspected and maintained on a regular basis.

Each section of the railway is made up of many subsections, and workers will use a small hammer to strike each section of the track during maintenance, and judge whether there is a problem with the track based on the sound.

Each railway bureau will arrange a certain number of personnel to take care of these tracks on a regular basis. Although the tracks are very long, there is also a type of train that is dedicated to inspecting the tracks. Through testing, we can tell us that there is a problem, and then the flaw detector will repair it.

The rails are divided into locomotive sections, and this kind of iron generally does not need to be repaired, and if it is broken, there will be a professional maintenance master to repair it.

1. If there is a problem with the railroad track, will there be an accident? A: Yes.

Answer: Change. Check daily.

In your question, there are two words for rail and rail, which I think is the concept of child and mother. There are several simple diseases of the track: 1. The level of the track.

2. Track gauge. 3. Rail damage. The basic inspection of the track level and gauge shall be manually inspected and managed by itself, and the inspection method shall stay in the original eye and the ruler (track ruler) shall be measured.

Excluding ballastless track) found that the problem is immediately treated, and the treatment method is also manual and simple mechanical equipment. In the railway department, there is a department in charge of the track, and under the department there is a professional workshop responsible for various problems of the track, and below the workshop is the work area where the real work is done. The day-to-day work in the work area is what is said above.

Each railway bureau also has a special track inspection train, which runs the inspection within the jurisdiction all year round (the on-board instrument can detect various data about the smoothness of the rail). The former Ministry of Railways above the Railway Bureau also has special train equipment (faster and more advanced), and the purpose is to keep running to supervise the work of subordinate units. Cracks will always occur in the long run of the train, some of which are external and some are internal, and most of them are difficult to see with the naked eye.

At this time, another coolie jumped out, called a flaw detector. They have a magic weapon in their hands, I can't remember the specific name, the principle is probably similar to ultrasound, it can detect internal or external cracks, there is data to go back to the office to study, serious will be called on the spot. They also run on the rails night after night, pushing this magic weapon (which can be set up on rails).

Summarize and report the problems found. It is then replaced by the work area I mentioned earlier.

Railway tracks must be maintained frequently to maintain good working order. Rail maintenance is a heavy task that used to take a lot of manpower to complete, but now it is gradually being replaced by machines. The main maintenance and repair work of the railway track includes:

Polishing the rail, improving the plane and longitudinal surface of the rail.

Replace some or all of the rails.

Replacement of sleepers. Tamping, cleaning, replacement and replenishment of ballast.

On busy lines, due to the short interval between trains, most railway operators will use automated engineering trains to carry out some maintenance work to improve work efficiency.

The small train is a chain drive, and should be regularly oiled during use, and if the chain is loose during use, it should be adjusted in time to prevent cross-chaining.

1. The small train must be operated by a special person.

2. When the train is running, the operator cannot leave the console without authorization, and should pay attention to the transportation of the train at any time.

First of all, the track should be cleaned frequently to prevent impurities from affecting the conductivity.

The second is that the motor belt should not be too loose.

Then there is the cockpit to be wiped down frequently.

Finally, screws, bearings, etc. need to be maintained.