方舟在哪下载 www.pveqj.icu 道岔是一種使機車車輛從一股道轉入另一股道的線路連接設備，通常在車站、編組站大量鋪設。有了道岔，可以充分發揮線路的通過能力。即使是單線鐵路，鋪設道岔，修筑一段大于列車長度的叉線，就可以對開列車。
The train is composed of a set of tracks to the device of another set of orbits. Each group of switch by switch, frog, two guard rail and sleeper, a long handle to leverage a two movable track, the wheel rim in opening direction into the scheduled route.
Single switch of the main line, line by line to the left or to the right fork, also known as the left and right turnout turnout.
Double switch is in the shape of a Y, which is connected with the two track to both sides of the bifurcation.
Three turnout as "shape, and connecting the three tracks, two groups switch from two sets of mechanical manipulation of tongue.
Doubleslip switches like X shape, combination in fact equivalent to four single turnout and a diamond shaped cross. The above will double cross X shaped switch points and two points respectively below link, is the crossover. It not only can open more direction, and do not cover a large area, so often used in station. There is a cross cutting equipment, often called the use of the diamond crossing. It is composed of two groups of acute frog and two groups of obtuse frog, but no switch, so the track can not transfer line.
Turnout installation device fixed screw fastening, device without the old wound crack.各連接桿、外鎖裝置無舊傷裂紋，桿件無磨卡及銹蝕，銷孔磨耗不大于1mm，絕緣良好。
Each connecting rod, the outer lock device without the old wound crack, rod without grinding card and pin hole corrosion, wear not more than 1mm, good insulation
An important part of the guard rail fixed frog of turnout, arranged on both sides of the fixed frog. Is the control wheel running direction, to prevent the harmful impact of frog space or climb the actual point of frog, the critical equipment to ensure traffic safety. In the movable point frog, a guard rail only general in the side, in order to prevent the side wear of rail.