Chute style connecting joints for f-rails

Abstract

The invention discloses a chute type attachment joint for F-shaped steel rails. The chute type attachment joint comprises a lower connecting plate arranged on the lower surfaces of wing plates and a limiting boss, wherein the limiting boss is arranged on one side face of the lower connecting plate in a protruding mode, and the surface of the protruding end of the limiting boss is a plane; each F-shaped steel rail wing plate is provided with a vertically-through groove matched with one end of the limiting boss correspondingly, a strip-shaped gap formed by the vertically-through grooves between the two opposite wing plates and a gap between the two wing plates is used for insertion of the limiting boss on the lower connecting plate, the lower connecting plate and the wing plates are connected and fixed after a connecting part penetrates through a connecting hole, the limiting boss can be made to penetrate through the strip-shaped gap, the surface of the protruding end of the limiting boss can be flush with the upper surfaces of the wing plates, the side face of the limiting boss can be in full contact with the inner wall of the vertically-through groove on each wing plate, and then connection of the F-shaped steel rails is achieved. By the adoption of the attachment joint, it can be guaranteed that wheels never disengage from the wing plates, and impact of rail gaps on traveling wheels can be completely avoided; meanwhile, extra high-difficulty machining and strength or performance weakening do not need to be conducted on the F-shaped steel wing plate structure.

Description

technical field [0001] The invention belongs to the technical field of medium and low-speed magnetic levitation track structures, and in particular relates to a connection joint for F-shaped steel rails, which is suitable for the connection between rail rows of medium and low-speed magnetic levitation tracks. Background technique [0002] The medium and low-speed maglev rail transit adopts the suspension and guidance technology of the constant electromagnet suction type, and realizes the suspension and guidance of the vehicle through the electromagnetic attraction between the U-shaped electromagnet on the vehicle suspension frame and the F-shaped rail. At present, the structure of the medium and low speed maglev track mainly adopts the steel sleeper type. The track mainly includes induction plates, F-shaped steel rails (also called F rails), expansion joints, connectors and fasteners, steel sleepers, fastener systems, and bearings from top to bottom. It is composed of rail p...

AI Technical Summary

Problems solved by technology

However, the above-mentioned connecting structure still has a limited limit on the lateral limit of the rail row. In particular, the wings are set in a "step" shape so that some of the wheels will still be located in the gaps, resulting in insufficient stability of the wheels, and the above-mentioned "step" type The structure requires machining of complex shapes on the end face of the rail, and it is necessary to ensure that the contact surface dimensions of the guide rails at both ends are precisely matched. It is difficult to process, high in cost, and low in installation efficiency. Difficult to process, but also cause huge waste of materials

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