A brief discussion on type V spring fasteners

Clip fasteners can be divided into different models to meet the operating conditions of passenger routes. Type V elastic fasteners are mainly designed for the line conditions of ballasted tracks where prestressed concrete has shoulder blocks and sleepers. Type V elastic fasteners are improved based on the original elastic type I and II fasteners and elastic type I height-adjusting fasteners while keeping the size and position of the existing sleeper rail bearing groove unchanged.

Type V elastic fasteners are composed of elastic bars, spiral spikes, flat washers, gauge baffles, under-rail pads and embedded casings positioned on prestressed concrete with shoulder blocks. Height-adjusting pads are used when adjusting the height of the rails. Type V elastic fasteners are elastic non-separable fasteners with concrete shoulders on sleepers. Spiral spikes and casings are used to fasten the elastic bars, which improves the insulation of the fastener system. performance. Various spring bars can be installed, including large and small buckling bars. Guide rail gaskets (rubber gaskets or composite gaskets) with different friction coefficients can be used to meet different line resistance requirements. The gauge baffle made of engineering plastic is used to adjust the gauge and plays an insulating role, reducing the number of fasteners and avoiding affecting the stress state of the screws when adjusting the gauge. The height of the rail can be adjusted by placing an adjustment pad between the base pad and the concrete sleeper bearing rail surface.

In terms of the overall structure, the Type V elastic bar fastener is based on the original fastener structure and has been optimized and improved in several aspects, such as improving the insulation performance of the fastener system; improving the fatigue performance of the elastic bar; and also considering the installation The small buckle pressure elastic strip and the composite backing plate with a small friction coefficient have the function of a small resistance fastener.