Lifting opening and closing mechanism of perpendicular lifting type opening bridge

Abstract

The invention discloses a lifting opening and closing mechanism of a perpendicular lifting type opening bridge, and particularly relates to the opening bridge. The lifting opening and closing mechanism is simple and reliable in structure, a balance weight body is connected with a bridge span structure through a steel wire rope which winds around a steel wire rope winding drum, a cylinder body of a hydraulic oil cylinder is arranged in the balance weight body, a piston rod of the oil cylinder is fixedly hinged to a base of the steel wire rope winding drum, a brake is arranged on the edge of the steel wire rope winding drum, upper locking mechanisms are symmetrically and correspondingly installed between the bottom face of the bridge span structure and a tower body, lower locking mechanisms are symmetrically and correspondingly installed between the bottom face of the bridge span structure and bridge piers, a centering device and a buffer are respectively arranged between the bottom face of the bridge span structure and the bridge piers, the balance weight body and the hydraulic oil cylinder are matched and connected with the bridge span structure through the steel wire rope which winds around the steel wire rope winding drum, the stable lifting operation of the bridge span structure is ensured, the matching of the brake, the buffer and the centering device ensures that the bridge span structure is safe and stable when descending, the bridge span structure is in the stable and safe lifting operation state, and the stable and efficient opening and closing of the opening bridge are achieved.

Description

technical field [0001] The invention relates to a lifting opening and closing mechanism of a vertical lifting type opening bridge, which belongs to the field of bridges, and in particular relates to an opening bridge. Background technique [0002] The open bridge is a bridge whose span structure can be moved or rotated. It is suitable for rivers or ports where the land or water traffic is not very heavy but needs to navigate larger ships. When the ship needs to pass, the land traffic is cut off, and the open bridge is opened; after the ship passes, the open bridge is closed, and the land traffic resumes. In the prior art, the vertical lifting open bridge usually uses a motor or a hydraulic system to drive the winch, and the wire rope is pulled by the winch, and the power is transmitted by the friction between the wire rope and the rope groove of the wire rope drum, so that the bridge span structure rises or falls. The structure of this type of vertical lifting and opening b...

AI Technical Summary

Problems solved by technology

The structure of this type of vertical lifting and opening bridge is complicated, because the transmission chain is relatively long, the transmission ratio is large, and the efficiency is low, resulting in large transmission torque, heavy gear reducer, expensive price, and the space occupied by the gear reducer is large, which has a great impact on the appearance of the bridge. big impact

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