What Are The Specific Uses Of U-shaped Clips?

The rails are fixed to the sleepers of the track bed by elastic fasteners. 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 elastic bars work under repeated alternating stress. It has many functions such as bending, torsion, fatigue and corrosion. It is also subjected to very high instantaneous impact loads when vehicles drive by, so the performance requirements for the spring bars are very strict.
The U-shaped elastic strip is U-shaped with front and rear arches, its front end is buckled on the lower edge of the rail, and its rear end is pressed into the rear groove of the rear end of the iron seat. The elastic height-adjusting fastener device relates to a device installed on a railway concrete sleeper for adjusting the height and gauge of rails and buckling and fixing the rails. Composed of iron seat, spiral spikes and spring bars. The height and gauge of the rails can be adjusted conveniently by using height-adjusting backing plates and insulating gauge pads of different specifications, and the rails can be firmly buckled and fixed by pressing the spring strips with the top nuts of the spiral spikes. What are the specific uses of U-shaped spring bars?
1. This fastener is used with concrete sleeper or concrete wide sleeper for 50kg/m rail, standard gauge railway straight line and curve radius R≧300mm curve section.
2. The gauge adjustment range is -8≈+16mm, and the height adjustment amount is 25mm. In the curved section of the new-type under-rail foundation (such as the integral ballast bed), a 25mm thick height adjustment backing plate can be pre-filled inside, and the inner rail is withdrawn, and the outer rail is removed. The method of the rail pad, the height adjustment of the two strands of steel rails is 50mm.
3. The nut tightening torque is generally 100N.m, and the tightening torque is 150N.m in the braking section or curved section. When the torque is greater than 120N.m, the straight parts at both ends of the U-shaped elastic strip are parallel to the bottom of the rail, which is a straight line contact. Prevent rails from everting or crawling.