1. What tools are needed to install common railway spikes?
A spike hammer is the main tool for installing common railway spikes. It is used to hammer the spike into the sleeper. A track gauge may also be used to ensure the rail is in the correct position before installing spikes. A level might be needed to check if the rail is horizontal. Sometimes, a pry bar is used to adjust the rail's position slightly. These tools work together to ensure proper installation of the spikes.
2. Why are stainless steel spikes not commonly used in high-speed railways?
Stainless steel spikes have lower strength compared to carbon steel and alloy steel ones. High-speed railways require spikes to withstand large loads and vibrations, which stainless steel may not handle well. The higher cost of stainless steel also makes it less economical for large-scale high-speed railway projects. Carbon steel and alloy steel spikes can meet the strength needs of high-speed railways at a lower cost. So stainless steel spikes are not the first choice here.
3. What happens if a railway spike becomes loose?
If a railway spike becomes loose, it can no longer fix the rail firmly. This may cause the rail to move slightly when a train passes. Over time, the loose spike may lead to other spikes also becoming loose due to uneven stress. It increases the risk of rail deviation and even train derailment. So loose spikes need to be tightened or replaced immediately upon discovery.
4. How often should railway spikes be inspected?
Railway spikes should be inspected regularly, with the frequency depending on railway usage. For high-speed or heavy-haul railways, inspections are usually done every 1-3 months. For ordinary passenger or freight railways, inspections can be done every 3-6 months. After severe weather like heavy rain or storms, additional inspections are needed. Regular inspections help find loose, rusted, or damaged spikes in time.
5. What is the shape of the upper end of a common railway spike?
The upper end of a common railway spike is usually flat. This flat design allows it to press tightly against the rail base. It ensures that the clamping force is evenly distributed on the rail base. Some common spikes may have a slightly curved upper end to better fit the rail's shape. The flat upper end also makes it easier to use a spike hammer during installation.