As the main type of railway fixed equipment, railway clamps are widely used in many types of railway fixed systems. For example, tension clamp fixing system, bolt fixing system and e-clamp fixing system. As we all know, the importance of railway clamps. Why are railway clamps so important in railway fixed system? We should start with the function of railway clamps.
The railway clamp is an important railway fixing device. Its basic function is to fix the rail on the railway sleeper, keep the track stable, and maintain a certain gauge with the horizontal and vertical movement of the rail. It can be said that the railway clamp is called the key intermediate connecting part.
In the blade fixing system and clamp fixing system, the rail blade and rail clamp are the main fasteners, they have the same elastic characteristics. In the fixture fastening system, the railway fixture itself has no elasticity and belongs to rigid fastening. The railway clamp can provide enough rigidity for the safety of railway transportation.
In the history of Chinese railway construction, three kinds of main rail clip fasteners are designed according to the size of the rail. They are early bolt type clamps, 63 type rail clamps and 70 type rail clamps.
Due to the limitation of technical level, the bolt clamp embedded wood screw is designated as the concrete sleeper which can simply connect the fastener and the sleeper. This type has been eliminated. Now, it is rarely used in track fixing system.
The type 70 railway clamp is suitable for concrete sleepers with ditch and for rails of 43kg and 50kg. It can adjust the gauge by changing the rail clamps of different sizes. Connecting screws and sleepers is the form of railway anchors. At present, in China, there are few such railway clamps to lay new railway lines just for maintenance. The elasticity of the clamp fastener is small and the clamping force is greatly reduced, so it has been basically eliminated.
We all know that the famous KPO fastening system has good performance in many countries. KPO fastening system belongs to fixture fastening system. It includes kpo3, kpo5, kpo6 and kpo9. In general, railway clamps must conform to DIN, aream standards, etc. In terms of materials, railway clamps are usually made of mild steel or alloy steel by hot forging, rolling and casting.
We all know that the famous KPO fastening system has good performance in many countries. KPO fastening system belongs to fixture fastening system. It includes kpo3, kpo5, kpo6 and kpo9. In general, railway clamps must conform to DIN, aream standards, etc. In terms of materials, railway clamps are usually made of mild steel or alloy steel by hot forging, rolling and casting. KPO fastening system consists of the following parts:
For use with track fixing plates and bolts. In China, it is made of Q235 or 45 steel.
Slide rail bolt
Rail bolts, also known as hook bolts, are used to secure the connecting plates.
The fastening plate of the fastening plate track is the base plate and the foundation of the track fixing system.
Screws are used to fix the connecting plate to the wooden sleeper. When used for concrete sleepers, it is usually used with plastic pins.
In general, spring washers are used to distribute the load of fasteners.
The surface of railway clamp is usually coated with common oil, black oxide, galvanized, hot-dip galvanized and carburized. In the process of transportation, railway clamps are usually packed in wooden boxes or sacks and wooden pallets, with each package of 25kg.
All in all, according to DIN, AREMA and din, railway clamps play an important role in the fastening system of railway clamps, which are widely used in many countries and regions. Many factories are still producing them to meet the needs of China and even the world. Other standards. This is an excellent invention for railway construction and development.