Movable ladder for floating wharf

Abstract

The invention relates to a movable ladder for a floating wharf. The movable ladder comprises a fixed section and a movable section. The movable ladder is characterized in that the movable section comprises two upper beam frames, two lower beam frames, step pedals, first pulleys and second pulleys, wherein the two upper beam frames are in parallel and obliquely arranged at both sides of the movable ladder, and the top ends of the two upper beam frames are articulated with the fixed section through hinge shafts; the two lower beam frames are in parallel and obliquely arranged at both sides of the movable ladder; the step pedals are sequentially and horizontally arranged between the upper beam frames and the lower beam frames at intervals from top to bottom, and both sides of the step pedals are respectively articulated with the upper beam frames and the lower beam frames; the first pulleys are arranged on the bottom ends of the upper and lower beam frames and positioned in pulley sliding grooves in a floating bridge; the second pulleys are arranged on the top ends of the lower beam frames and positioned in a guide sliding groove in the fixed section; and pulley shafts of the second pulleys and the hinge shafts are positioned at a same horizontal height. According to the invention, a light movable ladder shape is adopted, a parallelogram principle is applied, and a step surface is kept almost parallel with a horizontal plane all the time during tide rising and ebbing, so that the potential safety hazards of wharfmen on the wharf floating up or down are greatly reduced.

Description

technical field [0001] The invention relates to a floating dock, in particular to a movable ladder for the floating dock. Background technique [0002] For the convenience of people going up and down the floating dock, a connecting passage is installed between the floating dock and the embankment, and the connecting passage is generally a ladder passage. For example, the Chinese Utility Model Patent No. ZL200620063525.0 (authorized announcement number CN201010855Y) discloses the "Strut Fixed Combination Floating Wharf". The upper and lower trestle bridges on the embankment, among them, there are multiple sets of rigid struts in the shape of "eight" between the floating parts and the embankment, and the floating parts and the sides of the embankment are respectively provided with fixed ears of corresponding heights, and the two ends of the rigid struts are respectively Fixed lugs for hinged floats and embankments. From the structure of the floating pier, it can be known tha...

AI Technical Summary

Problems solved by technology

From the structure of the floating pier, it can be known that if the bridge deck of the upper and lower trestles directly adopts an inclined plane, then when the tide ebbs, the slope of the inclined plane becomes larger, and people have to rely on guardrails to go up and down the floating pier, which is not only difficult to walk, but also uncomfortable Speaking of, there are serious security risks

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