Simply supported longitudinal beam structure of large displacement modular telescopic device for medium and low speed maglev bridge

Abstract

The invention discloses a simple support longitudinal beam structure of a large displacement modular expansion device of a medium-low speed maglev bridge, wherein a terminal rail row structure and a support of the expansion device are respectively arranged on the beam tops of two beam ends of adjacent rail beams; The simply supported longitudinal beam structure comprises at least two simply supported small longitudinal beams; Between that support of the telescopic device, a simple supporting small longitudinal beam is arrange, and a circular hole and a long hole are respectively arranged at two ends; The upper end of the simple supporting small longitudinal beam is slidably provided with a modular telescopic rail row through a longitudinal beam sliding device; The modular telescopic rail row comprises a plurality of rail row sub-units; The rail beam of the rail row sub-unit and the rail row structure of the terminal end are provided with a lateral moving device; A link device is arrange between two adjacent rail row sub-units and between that rail row structure and the end end of the rail row, and the two end of the link device are connected with a lateral moving device. The invention solves the problem that the I-type, II-type and III-type F rail expansion joints cannot adapt to the large displacement expansion and contraction of the track beam, and is suitable for the large displacement expansion and contraction of the long-span track beam or the long-link continuous track beam.

Description

technical field [0001] The invention belongs to the field of medium and low speed maglev rail transit, and in particular relates to a simply supported longitudinal beam structure of a large displacement modular telescopic device for a medium and low speed maglev bridge. 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 middle and low speed maglev track beam structure and track structure are divided into two parts. The track structure is laid on the top of the concrete track beam. , The expansion and contraction of the track structure. [0003] At present, there are conventional slotted track joints for medium and low-speed maglev transportation (including type I, ...

AI Technical Summary

Problems solved by technology

[0011] Aiming at at least one of the above defects or improvement needs in the prior art, the present invention provides a simply supported longitudinal beam structure of a large displacement modular telescopic device for a medium-low speed maglev bridge. F-rail expansion joints cannot adapt to the problem of large-displacement expansion and contraction of track beams, and are suitable for large-displacement expansion and contraction of large-span track beams or long-connected continuous track beams

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