The invention discloses a displacement type wharf ladder. The displacement type wharf ladder comprises an armrest, vertical railings, a connecting rod, a handle, a stake and a ladder, wherein the armrest, the ladder and the vertical railings are hinged to form a wharf ladder frame which is similar to a parallel four-connecting-rod mechanism; the armrest extending outwards in the direction of a hull is in lap joint with the handle; a clump weight is arranged at a cantilever end of the handle extending outwards along the armrest; the other end of the handle is hinged to the connecting rod which extends downward; the pendent connecting rods and the right vertical railings are adjacent to each other; the bottom end of the connecting rod is hinged to the ladder; the stake is fixedly connected to a shipside deck in a perpendicular manner; eye plates are respectively arranged at the top of the stake and a position, h away from the shipside deck, of the stake; one end, towards the hull, of the armrest in the wharf ladder frame and one end, towards the hull, of the ladder in the wharf ladder frame are hinged to the reserved eye plates on the stake; a structure of the wharf ladder frame capable of swinging up and down around the eye plates on the stake relative to the shipside deck is formed, and a swinging angle alpha ranges from -30 degrees to 30 degrees. According to the displacement type wharf ladder disclosed by the invention, the swinging angle is wide in scope, so that the requirement for steady erection of the wharf ladder under different working conditions can be met.
Displacement type wharf ladder
2016-01-27
Patent
Electronic Resource
English
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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