Application And Necessity Of Type III Rail Clip in Heavy Rail

The track is a component that supports the direction of the locomotive and the direction of the locomotive. The track is fixed on the sleeper of the track bed through elastic fasteners. The fasteners of the clip fasteners are mainly type III clips. Through the bending deformation of the type III clips, the buckle Acting on the guide rails, it ensures the long-term reliable connection between the guide rails, maintains the integrity of the guide rails as much as possible, prevents the guide rails from moving in the vertical direction and is horizontal relative to the sleeper, and ensures that the gauge is normal, thereby ensuring the safety of the rail vehicle. In addition, due to the rigid contact between the wheel train and the rail, vibration will inevitably occur, and the elastic structure of the elastic strip also absorbs the impact energy generated when the vehicle passes by, so as to achieve the effect of shock absorption. The spring bar works under repeated alternating stress, and it has many functions, such as bending, torsion, fatigue and corrosion. When the vehicle passes by, it also bears a very high instantaneous impact load, so the performance requirements for the spring bar are very strict.
With the increase of axle load and train speed, as well as the development of urban rail transit and subway, the spring bar, which is a key link of track structure, is also developing continuously, and its importance has received more and more attention. In the traditional production line, a spring bar with a large buckle pressure is required to meet the needs of heavy-duty and high-speed production lines. In the seamless track of the viaduct, in order to reduce the interaction force between the rail and the bridge, the fastener resistance is required to be small, and the spring bar has enough elasticity, that is to say, the spring bar has enough low steel to ensure that the train passes, snapping due to compression of the lower rail pad. There is very little pressure loss and no loosening of fasteners.
From this we can see that the Type III clip is a small maintenance device, but it is an important part of the track. Due to the high demand, there are about 7000 pieces per kilometer, so its reliability is directly related to the safety of driving.