Tensile adjustable connection mechanism for orbit beam

Abstract

The invention provides a tensile adjustable connection mechanism for railway girders, which comprises a top plate, a bolt, a fastening nut, a pedestal and a fastening screw, wherein the bolt is connected with the pedestal through a screw thread; the fastening nut is screwed on the screw thread of the bolt and is connected with the pedestal through the fastening screw; and the pedestal is connected with a lower pre-embedded plate. The mechanism also includes a lower sliding plate with one convex end face, an upper sliding plate having one concave end face, and an upper buckle plate having a support surface, wherein the other end face of the upper sliding plate is disposed on the support surface; the upper buckle plate is fixedly connected with a top plate; a flange is arranged on one end of the bolt and has a concave end face and a lower convex surface; the lower sliding plate is disposed between the top plate and the bolt through the rotatable matching between the convex surface of the upper sliding plate and the concave surface of the bolt; and the bolt is rotatably matched with the concave surface of a second upper sliding plate through the convex surface of the flange. The connection mechanism has simple structure and lower cost, and can conveniently arrange an assembly for adjusting the spatial position of the railway girder according to requirement.

Description

technical field [0001] The present invention relates to a connecting part used for installing track beams, in particular, to a tension-resistant and adjustable connecting mechanism for track beams. Background technique [0002] The track beam used for rail transit is placed on the substructure such as the pier through the connecting mechanism. The load of the train running at high speed, including the weight of the rail beam itself, is transmitted to the substructure through the support. The general support has Strong compressive capacity, however, when the train is running on the track, it will also generate a large upward pulling force under certain circumstances. For lighter track beams, their own weight is not enough to overcome this pulling force. Traditional track beams None of the bearings used can constrain the track beam both in compression and in tension. [0003] For example, a connection mechanism for track beams is provided in the Chinese invention patent appli...

AI Technical Summary

Problems solved by technology

[0002] The track beam used for rail transit is placed on the substructure such as the pier through the connecting mechanism. The load of the train running at high speed, including the weight of the rail beam itself, is transmitted to the substructure through the support. The general support has Strong compressive capacity, however, when the train is running on the track, it will also generate a large upward pulling force under certain circumstances. For lighter track beams, their own weight is not enough to overcome this pulling force. Traditional track beams The supports used cannot restrain the track beams both in compression and in tension.

[0003] For example, a connection mechanism for track beams is provided in the Chinese invention patent application publication whose application number is 01126627.9 and the name is "adjustable support". The top plate of the connection mechanism is placed on the top seat, and the bottom surface of the top seat is The circular pit in the middle is just embedded in the upper ball seat, the lower ball seat is placed in the cavity of the stud, and the ball crown of the upper ball seat is placed in the matching bowl of the lower ball seat to form a ball joint. , the connection mechanism relies on the ball joint to adjust the support angle caused by the superelevation of the vertical or transverse curve of the line, and can also adjust the angle deviation caused by the manufacturing error of the track beam or the substructure cover beam, but when the train passes the track beam The larger tension will cause the connection between the top plate and the top seat, the top seat and the upper ball seat or the upper ball seat and the lower ball seat to be separated, so this connection mechanism can only be used to connect track beams with heavy weight

[0004] For another example, an adjustable composite beam connecting mechanism is provided in the open specification of the invention patent application whose application number is 03150862.6 and whose title is "adjustable composite beam coupling device". Through the track plate, the adjustment device and the load-bearing beam, there are nuts and lock nuts at both ends of the connecting rod. Such a through-the-center structure makes the connecting mechanism unable to be made into a slidable form, and can only be used for superimposed track beams. fixed connection mechanism

[0005] In order to solve the tensile resistance of the connecting mechanism used by the track beam, there is also a known technology that adopts a combined support scheme, that is, two compressive supports are used to cooperate with a tensile support to achieve both compression resistance and energy It has the function of tensile strength, but it is difficult to adjust and the number of supports is large, so it is not practical enough

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