Type II Rail Fastening System

China Type II split-strip rail fastener system

Type II elastic bar split type fastener used on the plate track on the Qinshen bridge. The pressure of a single elastic bar is not less than 5.6kN, the transverse force borne by the fastener is 50kN, the maximum longitudinal resistance of the fastener node is not more than 7.0kN/mm, and the vertical stiffness of the fastener node is 40-60kN/mm. The rail surface is adjusted 30mm, the gauge is adjusted +8-12mm, and the anti-pulling force of embedded casing is 100kN.

Spring strip type II elastic split fastener structure is elastic split fastener with iron plate. This fastener was used in Yuhuai Line Yuzui No. 2 tunnel in the early stage, and was also used in individual tunnel overall track bed in the later stage.

Its main structural features are:

(1) Rubber pads are set between the rail and the iron pad plate and between the iron pad plate and the foundation, and double layer vibration reduction;

(2) If type II spring bar is used as the clamping part, type I spring bar can also be installed;

(3) A T-bolt is arranged on the iron gasket plate and inserted into the iron seat, and the spring bar is tightened by tightening the nut of the T-bolt;

(4) A gauge block is set between the iron seat and the rail to adjust the gauge, and the adjustment amount of the gauge is -8 ~ +4 mm;

(5) Bolt holes are opened on the iron gasket plate, and the anchoring bolt and the insulation sleeve embedded in the concrete foundation are fastened together with the iron gasket plate; A spring washer is arranged between the bolt and the iron cushion plate;

(6) Rail height adjustment through under the rail and iron cushion plate under the plate, spring bar II elastic separate type fastener into the adjusting height plate to achieve, rail adjustment amount 10mm, iron cushion plate adjustment amount 10mm, a total of 20mm can be adjusted.

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