A boltless fastener assembly suitable for heavy-duty railways with an axle load of 35-40 tons

Abstract

The invention relates to a boltless fastener assembly suitable for heavy-duty railways with an axle load of 35 to 40 tons, which comprises a pre-embedded iron seat, an e-shaped elastic strip, an insulating gauge block and a rubber backing plate. Set the heel end of the e-shaped elastic clip buckle with an L-shaped stop, cooperate with the e-shaped elastic to improve the pre-embedded iron seat, and open a hole in the pre-embedded iron seat near the heel of the e-shaped elastic clip to buckle the pressed leg to improve the e-shaped The spring bar can be installed normally. During normal installation, the L-shaped retaining end of the e-shaped spring bar does not contact the embedded iron seat, which does not affect the normal installation and stress of the spring bar; when the rail undergoes a large torsional deformation, the The L-shaped retaining end will move up and contact with the upper edge of the embedded iron seat opening, or the L-shaped retaining end on one side of the rail and the second heel end will snap together to generate greater resistance to prevent the torsional deformation of the rail, thereby preventing The elastic bars fail due to excessive deformation, and the invention is suitable for heavy-duty railways with an axle load of 35-40 tons.

Description

technical field [0001] The invention relates to an elastic strip fastener system for rails, in particular to a boltless fastener assembly suitable for heavy-duty railways with an axle load of 35-40 tons. Background technique [0002] Heavy-duty railway transportation has been widely valued by railways all over the world because of its large capacity, high efficiency and low transportation costs. For example, a large number of heavy-duty trains are operated on heavy-duty railways in the United States, Canada, Brazil, Australia, and South Africa. Passenger transportation is used in Europe. Heavy-duty trains have also begun to run on the main mixed passenger and freight lines. As one of the important components of the track structure, fasteners play an important role in maintaining the gauge and enhancing the stability of the track structure. [0003] Boltless fasteners are widely welcomed because of their simple structure and the avoidance of bolt oiling and nut tightening op...

AI Technical Summary

Problems solved by technology

At present, the boltless fastener structure used by heavy-duty railways, ordinary-speed railways and high-speed railways at home and abroad has the above advantages but also has its own obvious shortcomings. This kind of e-shaped clip has no secondary crimping stiffness or a limit device to prevent excessive deformation, which may easily cause excessive residual deformation of the clip and lose the fastening force. fail

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