Cross beam mechanism facilitating mechanical bridge erection

Abstract

The invention discloses a cross beam mechanism facilitating mechanical bridge erection. The cross beam mechanism comprises an upper cross beam, upper roller assemblies, lower roller assemblies, cross beam shafts, springs and a sprocket assembly. The upper cross beam is of an arch structure symmetrical in the transverse direction, and the two longitudinal ends of the upper cross beam are connected between the two external main bridge sections to form a bridge span. Four upper roller assemblies are transversely and longitudinally symmetrically arranged on the upper cross beam, and each upper roller assembly is supported on the upper cross beam through a roller shaft, can rotate around the roller shaft and is used for guiding an external telescopic arm structure to be shoveled into the bridge span; the two ends of the upper cross beam are provided with the cross beam shafts, one end of each beam shaft is connected with the lower roller assembly, and the other end is fixed on the main bridge section; the lower roller assembly guides the telescopic arm structure to move forwards or backwards relative to the upper cross beam; the springs are supported between the two ends of the upper cross beam and the main bridge sections and used for providing restoring force for transverse deflection of the upper cross beam; and the sprocket assembly is welded to the middle of the lower end of the upper cross beam and connected with a chain of the telescopic arm to drive the upper cross beam to move longitudinally.

Description

Technical field [0001] The present invention relates to the field of emergency bridge equipment, and more particularly to a beam mechanism that facilitates mechanized bridge. Background technique [0002] At present, in the field of emergency bridge equipment, multiple beams are often connected to a wide bridge laterally to a wide bridge; during the erection and revocation of such bridges, it is often necessary to pass through external telescopic arm structures (see Application No.: CN201919165216 .8) Take off the beam and pick up the operation, thereby achieving the launch and recovery of the bridge. However, during the elongation of the telescopic arm structure, since there is a certain angle between the telescopic arm structure and the bridge between the bridge, and the angle is changed, if the two ruts are used, the stretching is used. The arms and bridges have interference phenomena, thus causing the bridge operations that cannot be implemented smoothly. Inventive content ...

AI Technical Summary

Problems solved by technology

However, during the shoveling process of the telescopic arm structure to the end beam, since there is a certain angle between the telescopic arm structure and the bridge span, and the angle is changing, if a conventional fixed beam is used to connect the two ruts, it will cause telescopic There is interference between the arm and the bridge beam, which makes the bridging operation unable to be carried out smoothly

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