A special spreader for duplex-shaped permeable frame

Abstract

The invention discloses a special lifting appliance of a double-I-shaped permeable frame, relates to a grouped fixed point throwing lifting appliance for a novel double-I-shaped permeable frame, and specifically relates to an automatic releasing lifting appliance for lifting the permeable frame. The special lifting appliance is characterized by being composed of an upper truss and a lower truss, wherein the upper truss and the lower truss are combined into an integral structure; the upper truss comprises an upper truss frame, upper truss beams, upper truss lifting buckles, upper truss limiting rings and sleeves; the upper truss frame is a Sudoku frame which is formed by welding joist steels, and the two upper truss beams are arranged below the upper truss frame; two upper truss lifting buckles and the upper truss limiting rings are welded above each beam; the sleeves are fixed on the upper truss frame, the lower truss comprises a lower truss frame, lower truss beams, lower truss lifting buckles, lower truss limiting rings and guide pillars; the lower truss frame is the Sudoku frame which is formed by welding the joist steels, the two lower truss beams are arranged below the lower truss frame, the two lower truss lifting buckles and the lower truss limiting rings are welded above each beam, and the lower truss frame is fixedly provided with the guide pillars.

Description

technical field [0001] The invention relates to a special spreader for duplex-shaped water-permeable frames, which relates to a set-point throwing spreader for a group of new double-work-shaped water-permeable frames, and in particular to a spreader for hanging and automatically falling off the water-permeable frames. Background technique [0002] In waterway improvement projects, laying interlocking row construction underwater is one of the most commonly used methods to prevent water erosion and protect the river bed, and has the best bottom protection effect. However, due to the influence of various factors such as tide, water depth, water flow velocity, and flow direction, the underwater paving construction will form various flows such as cross-dive flow, flow along the embankment, and flow around the embankment. state, causing the gold-plated blanket surface of the embankment to be scoured, which has an impact on the stability and safety of the structure. Although soft ...

AI Technical Summary

Problems solved by technology

[0004] In order to ensure the effect of protecting the beach and bottom of the project, the role of the traditional concrete tetrahedral permeable frame can no longer meet the needs of the project, so it is necessary to develop a better water flow structure near the bottom. The area can form a better effect of energy dissipation and beach protection, a new type of permeable frame with better stability, durability and economy, and convenient construction

[0005] At the same time, for the new permeable frame researched, traditional manual throwing can no longer give full play to its own advantages, so only fixed-point throwing can realize its own value

Images