Flexible telescopic mechanism and bridge telescopic device for bridges

Abstract

The flexible telescopic mechanism for the bridge includes a cross link assembly. The connection position of the cross link assembly is connected with a flexible bushing. The flexible bush is inserted into the connection position of the cross link assembly through interference fit. The connecting seat connected with the bridge girder body is rotatably installed in the flexible bushing at the connection position, and the pin shaft is installed with clearance fit in the flexible bushing at the connecting position at the end of the cross-connecting rod assembly. The invention ensures the uniformity of the gap width of the beam body, can adapt to the certain displacement and rotation angle between the side beam and the middle beam of the bridge when the vehicle passes the car, weakens the impact effect, improves the service life and driving comfort, and reduces the impact noise, which can be very good The problem of uneven slit width and excessive impact response of the original telescopic device can be effectively solved. The flexible bushing makes the telescopic mechanism "softly" deformed, weakens the horizontal impact effect of the telescopic mechanism, reduces the impact and vibration noise caused by vehicles passing by, and improves Vehicle comfort. The invention also provides a bridge expansion device.

Description

technical field [0001] The invention relates to a flexible expansion mechanism and a bridge expansion device for bridges, which are suitable for large displacement bridges. Background technique [0002] Most of the gap width uniform distribution mechanisms of existing large-displacement bridge expansion devices use rubber or polyurethane springs, which are divided into compression type and shear type. When the compression type uniform distribution mechanism is used, the deformation of the compression spring is the smallest at the maximum or minimum slit width, where the uniform distribution ability of the uniform distribution mechanism is the smallest. At this time, uneven slit width may occur. When the shear type uniform distribution mechanism is used, the non-deformation position of the shear spring is set at 1 / 2 of the specified displacement of the slit width, so the uniform distribution force of the uniform distribution mechanism here is zero, which is not conducive to t...

AI Technical Summary

Problems solved by technology

[0005] The bridge flexible expansion mechanism and bridge expansion device provided by the present invention can ensure the uniformity of the gap width of the beam body, can adapt to the certain displacement and rotation angle between the side beam and the middle beam of the bridge when the vehicle passes the car, weaken the impact effect, and improve the service life And driving comfort, reducing impact noise, can well solve the problems of uneven gap width and excessive impact response of the original expansion device, the flexible bushing makes the expansion mechanism "soft" deformation, weakens the horizontal impact effect of the expansion mechanism, Reduce the impact and vibration noise caused by the passing of the vehicle, and improve the comfort of the vehicle

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