Train switches, switches available from stock

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Train switches, switches available from stock
Train switches, wooden switch sleepers, concrete switch sleepers, speed-increasing switch manufacturers, switch wholesale
Since there are single-channel switches, there are double-channel switches, triple-channel switches, and multi-channel switches. Turnouts (duplex crossing switches), etc.
The double-open turnout is in the shape of a double-open turnout, that is, the two roads connected to the turnout diverge to both sides.
The three-turn switch is in the same shape and connects three tracks at the same time. Two sets of switch machines operate two sets of point rails.
The image of a compound intersection turnout is actually equivalent to a combination of four sets of single switches and a diamond-shaped intersection.
In addition, there is also a crossover device, which is commonly used called a diamond crossover. It consists of two sets of acute-angle frogs and two sets of obtuse-angle frogs, but there is no switch, so the lines cannot be changed between the strands.
If the upper two points and the lower two points of the compound intersection turnout are connected respectively, it is the intersection line. Not only can it open more directions, but it also takes up less space, so it is often used at stations.
The angle formed by the turnout center is called the frog angle, which can be large or small. The turnout number represents
/~// Schematic diagram for calculating the turnout number
Schematic diagram for calculating the turnout number
The main dimensions of each part of the turnout are usually represented by the cotangent value of the frog angle, Right now/. Obviously, the smaller the frog angle, the larger the value, the larger the radius of the guide curve, the smoother the train sideline passes through the switch, and the higher the allowable speed of the switch. Therefore, the use of large switches is beneficial to train operation. However, things always have two sides. The larger the turnout number and the longer the turnout are, the higher the cost will naturally be and the area will be much larger. Therefore, the number of turnouts to be used depends on local conditions and varies from line to line, and cannot be generalized. Most of the main railway lines in my country use three types of turnouts. The commonly used turnout numbers and their passing speeds are as follows.
Turnout type
Point rail length
Turnout center
Passing speed, straight/curved strand
Transitional type

Fixed
/
Flexible tip rail

Fixed
/
Flexible tip rail

Movable
/
Speed up< br/>
Fixed
/
Speed up

Movable
/
Speed up

Movable
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Speed

Movable
/

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