Track bolts are used to attach railway track rails to concrete anchors. They consist of a threaded bolt, nut, and lock washer to prevent loosening due to vibrations. Hardened steel is used to ensure strength and prevent rust. The bolt is inserted into the rail anchor through a mounting bracket and secured with a lock washer. This is the most common method of attaching rails to anchors.
A track bolt is used in railway construction as a means of attaching track rails to the surface they are applied to. In most cases, when a new track system is being built, the anchors for the track are made from concrete instead of the wood they were traditionally made from. To attach the rail to the concrete anchors, the rail must be anchored to the concrete by the use of a mounting bracket which holds the rail rail in place. Before the rail can be attached to the mounting bracket, the mounting bracket must be anchored in the concrete. This is done through the use of a special rail bolt.
Due to the amount of weight the track of any rail system must support at any given time, the anchor system must be as strong as possible to prevent any possibility of shifting. As a result, most of the mounting brackets, as well as the rail bolts, are made from hardened steel. The steel is treated to prevent it from becoming susceptible to rust. These mounting systems using track bolts are mounted and anchored directly to the track anchors, whether the tracks are made of concrete, wood or any other material.
The rail bolt itself is more than just a threaded bolt. Track bolts are usually three-part fasteners, consisting of a threaded bolt, a lug or nut, and a lock washer. The washer prevents the rail bolt from moving or loosening due to the intense vibrations caused by a passing train.
The nut is placed on the mounting bracket, above the faucet into which the bolt will be screwed, while the washer is located above the lug. The mounting bracket and lug both have opposing teeth which, when engaged with each other, prevent any slippage during the fastening process. After the lock washer has been applied over the lug, the bolt is centered over the lug and inserted into the rail anchor through the tap in the mounting bracket. Once the lock washer engages the bolt, the bolt is prevented from slipping or twisting.
When the rail bolt is fixed and fixed through the mounting bracket in the rail anchor, the fixing pin or rail pin held by the mounting bracket is pulled down. Then apply pressure to the bottom flange of the rail. This is the most common method of attaching a rail to anchors set for the rail system.
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