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The Function And Importance Of Springs In Railway Track
Oct 09, 2017


Railway rails are components that support locomotives and locomotives, and the rails are fixed to the sleeper of the track bed by elastic fasteners. The elastic fastener's buckle is mainly a spring, which is bent and twisted by the spring, resulting in buckle pressure acting on the track, long-term effective guarantee of reliable connection between the rails, as far as possible to maintain the integrity of the track, Relative to the sleeper of the vertical and horizontal movement, to ensure that the track from the normal, so as to ensure the safety of rail vehicles. In addition, because the train wheel and rail contact is a rigid contact, it is inevitable to produce vibration, and the elastic structure of the special elastic so that it also has to absorb the impact of vehicles passing through the shock energy to achieve the role of shock absorption. The projectile is working under repeated alternating stress, it is subject to bending, twisting, fatigue and corrosion and other effects, in the vehicle through, but also to withstand high instantaneous impact load, so the performance requirements of the string is very strict The

With the increase of the axle load of the railway locomotive and the improvement of the running speed of the train, as well as the development of the urban rail transit and the subway, the spring as a key link of the track structure is also developing, and its importance is more and more Countries are concerned. China is a vast country, climate, transport conditions, regional differences in the country, the need for a variety of different performance requirements of the projectile to meet the different requirements of different tracks. Such as in the conventional line, the need for buckle pressure, good elastic spring, to meet the needs of heavy-duty, high-speed lines; and viaduct track seamless circuit, in order to reduce the interaction between rail and bridge, The resistance is small, and to ensure that the elasticity of the elasticity, that is, to ensure that the ball is low enough to ensure that the train through the undercover cushion due to compression caused by the buckle pressure loss is small, fasteners do not loose.

Although it is a small public work device, but it is an important part of the track, because of its large demand, about 7000 per kilometer, its reliability is directly related to the safety of traffic.