Shoe brake: device and characteristic

Often it is necessary to sort the cars at railway stations and nodes . The wagons are driven by a locomotive or an electric locomotive. Sometimes for acceleration the car is not brought to its place, but is pushed after the coupler. Thus, the car rolls on its own. To stop it where it is necessary, or to prevent a blow to a peacefully standing train, the car must be detained. To do this, use a brake shoe. At the sorting nodes of railways, the train and wagons are mounted on an inclined section or pushed by a diesel locomotive. Then the wagons are detached separately or in groups in the right way.

In order to install this device, you need to use a special accessory. This is the so-called fork. With its help, it is possible to safely carry out work on braking the trailer trucks. To remove the brake shoe from under the wheels, a fork is also necessary.

Do not expose this part to any mechanical action. So, it is not recommended to install shoes under the wheels with a sledgehammer. When using a special plug, it must be installed only when the train or cars have completely stopped.

Brake shoe for wagon: operating principle

The principle of this device is to replace the rolling friction of the car with sliding friction. This phenomenon is called railwaymen's yuzom.

The length of this user depends on a variety of factors. For example, on how smooth the surface of the rail and shoe. The weight of the composition, the car, as well as the load on the axle of the car is important. Still need to take into account the speed with which the railway car enters the brake shoe. This includes weather conditions.

How to install a shoe?

There are two ways to do this. Professional railway workers distinguish between manual and mechanized.

When the wagon pair of the car rests against the head of the shoe, and then slides along the rails, the resistance to movement increases. The speed of movement of the train or car will slow down. Here you can put the device on the rails by hand or using a fork.

To exclude accidents, especially when working at high speeds, railwaymen use a mechanized brake shoe. Its difference from the usual is that the mounting and removal is carried out by means of various devices with a mechanical or electric drive. This drive, as it were, slides the shoe onto the path where the train will pass. To do this, use a cable.

Braking of wagons from a centralized post

This is one of the most popular ways of braking. Here, shoes are used that can move in special gutters. On the guides using cables, the shoe moves in the opposite direction from the car's movement. The shoe brakes the wheel sets and, with the help of the same wheels, is retracted to its original position.

Sometimes such a control of the mechanical shoe can be carried out with the help of pedals.

Here, before you start to brake, it automatically moves forward to meet the trailer. When the car hits the pedal, the engine will move the shoe in the direction in which the car is moving. The speed with which the brake shoe will stop the car is proportional to the speed with which it moved at the time of the meeting.

Kinds of shoes

These adaptations differ in how they are installed and removed. There are manual devices and mechanical ones.

For example, mechanical systems differ in that the installation or removal of them is carried out only with the help of special mechanisms. Such shoes, in turn, are divided into mortise and non-cutting.

One can also note the dropping brake shoe. This is a special kind of device that is intended to overturn the composition when it moves unauthorized.

Footwear characteristics

Wheel-release shoes equipped with a manual drive perform a more protective function. Such devices are designed to force the trains to drop from the rail. They are used wherever possible different accidents.

The anti-rolling element is mounted only after a complete stop. To fix the brake shoes in the event of braking does not cause sparks, the devices are made of aluminum or brass alloys.

The rolling element is poured out of steel alloys.

The shoes are left and right.