Author: Site Editor Publish Time: 2024-02-22 Origin: Site
In the process of railway transport, wheels are important parts of railway wagons which are very easy to be damaged. In the maintenance staff can always be found in the railway wagon wheel tread stripping, abrasion and other serious failures. These failures are great safety hazards in the process of railway freight transport, which will seriously affect the personal safety of the truck driver and the quality of the goods on board. So it is necessary to improve the quality of railway truck wheels. This article introduces some common railway wagon wheel failure and measures to prevent wheel failure.
The most superficial layer of the tread surface of railway wagons will be extremely fast due to factors such as skidding in the process of railway transport.Heating, such heat energy will be quickly transferred to the outside of the wheel. As the heat energy of the surface layer is dissipated more quickly, the temperature of the tread surface will be different, and it is easy to form two types of tread cracks, one is the hardened layer of the tread surface which cools down rapidly after heating; the other is the heating and expansion produced by braking of the metal on the surface of the tread surface. Both types of tread cracks affect the operational quality of railway wagons. Between them, the first type of tread cracks undergo organisational changes and are not self-recovering, while the opposite is true for the second type. Therefore, tread cracks of the first type are more harmful to railway wagons than those of the second type.Therefore, the first type of tread cracks is more harmful to railway wagons than the second type.
Wear of wheel treads is due to the overloading of wagons. Such heavy loads put great pressure on the wheels of railway wagons. This causes friction between the wheels and the rails, which is very common as many rail wagons nowadays take increased loads in order to make higher profits. However, this type of failure is also very easy to safety, for the railway wagon man-machine safety to form a great threat.
Railway wagon wheel tread stripping causes can be divided into two categories, one is fatigue stripping, the other is heat stripping.
First of all, it should be pointed out that the condition of railway wagon wheel tread stripping is generally manifested as flaky metal peeling off of the wheel surface. No matter which type of peeling will cause a serious blow to the quality of railway wagon wheels, but also to the safe transport of railway wagons form a great threat.
Then we will talk about these two types of peeling separately, fatigue peeling is manifested as tongue peeling. The specific reason is due to the continuous rotation of railway wagon wheels, which leads to the emergence of a tongue-shaped part of the tread surface of the wheel, due to the application of cold crushing, which ultimately leads to the tongue-shaped part of the peeling. Thermal stripping is caused by the spreading of thermal cracks along the tread in the right-angle direction, resulting in the peeling of the tongue. The thermal peeling is caused by the spreading of thermal cracks on the tread in the right-angle direction, which eventually leads to flake peeling.
When the circumferential wear depth of the tread surface of railway wagons exceeds a certain limit, it will destroy the original geometric shape of the tread surface. Shape. This will make the railway wagon in the process of running and rail friction increase, increase the running resistance of the wagon, thus reducing the running speed of the railway wagon. This reduces the running speed of railway wagons. In addition, the change in the geometry of the tread will also increase the friction between the goods vehicle and the rail during operation, thus reducing the running speed of the goods vehicle. increase the risk of wagon skidding when passing through curved roads.
Strengthen the overhaul of railway wagon wheel for reducing wheel failure, improve the quality of vehicle operation plays a vital role, do a good job of railway wagon wheel overhaul mainly by the following two aspects:
On the one hand, it is to give full play to the role of the train inspection workplace and railway running special equipment, timely discovery of in-use railway wagon wheel cracks, stripping and wear and other faults, according to the type of fault timely deduction repair or early warning, to ensure the quality of operation.
On the other hand, even with the most standardised operation, the wheels of railway wagons will generate slight wear and tear. These wear and tear itself is not enough to affect the railway wagon running process of operational safety. But set armpit into a fur, if not timely maintenance of railway wagon wheels, these small wear and tear will eventually be superimposed into a serious enough to affect the operation of the railway wagon safety failures. Therefore, this requires the railway transport units in strict accordance with the existing railway wagon maintenance system for regular maintenance of railway wagons, while the railway wagon maintenance unit related operations personnel should be Seriously and actively carry out railway wagon overhaul to ensure the quality of overhaul.
Measures to improve the quality of railway staff overhaul wheel fittings mainly include: the introduction and use of advanced railway Wagon overhaul equipment, strict implementation of overhaul process standards, improve the quality inspection and supervision system, strengthen the workers' overhaul business training, the implementation of a reasonable rotation system and strengthen the ideological education work. By doing so, we can minimise Possible to reduce the subjective and objective aspects of wheel wear overhaul untimely or not in place, improve the Inspection quality.
Railway wagon wheels if their own quality is excellent, you can slow down the process of wheel wear to a certain extent. For this reason, improve the quality of railway wagon wheel is the relevant railway staff need to focus on the key.
On the one hand, strengthen the railway wagon wheel manufacturing technology research, combined with the existing experience, in the wheel form and material Quality to further optimise, improve the quality standard of railway wagon wheels. To achieve excellent quality, can Reduce the wear and tear of later maintenance.
On the other hand, if the relevant railway wagon user units cannot independently research high-quality railway wagon wheels, they must also purchase the wheels that have been approved by the Chinese government. Must also be purchased to use the railway quality standards certified by the China Railway Inspection Centre of qualified wheels. Because The quality of railway wagon wheels is an important material cornerstone of railway wagon operation. For this reason, to improve the quality of railway wagon wheels, not only can For this reason, improving the quality of railway wagon wheels can not only reduce the situation of late maintenance, but also improve the efficiency of railway transport.
Improve the railway wagon running conditions, can reduce the railway wagon in the running process of the obstacle factors. So as to achieve the ideal effect of reducing the wear and tear of railway wagon wheels. Therefore, it is very important to improve the railway wagon operating conditions. To this end, the relevant railway staff need to do the following two points:
The first point is that the operating standards of the locomotive must be strictly enforced. When the railway wagon driver driving the more standardised, the more can reduce the driving process due to subjective factors caused by the railway wagon wheel failure.
The second point, improve the detection equipment of vehicle loading status of each railway wagon cargo loading station, timely detection and correction of overloading, partial loading, partial weight, set weight and other loading problems, from the source of loading to eliminate factors that may affect the excessive wear of the wheels, to ensure the quality of travelling.
The third point should be strict grouping regulations, strict grouping regulations, not only can make the relevant staff more clear about their duties, but also more conducive to the relevant staff to carry out their work down the road.
Of course, all of the above measures can reduce the railway wagon wheel failure, but also from the wheel with other railway wagon components. For example, to improve the rail material, gate tile and other comprehensive performance, improve the roadbed conditions. Thus, on the whole to improve the quality of railway wagon operation.
In conclusion, the measures to prevent common failures of railway wagon wheels have an important core, that is "prevention first, repair as a supplement". Relevant railway staff must be in the railway wagon wheel common failure of the Analyse the reasons for the emergence of the reasons, based on practical theory, put forward practical and effective preventive measures. So as to achieve The effect of improving the quality of the wheel.
