Jacking-up mechanism of sleeve roller chains

Abstract

The invention relates to a jacking-up mechanism of sleeve roller chains, which comprises a driving box body and roller chains with U-shaped accessories, wherein the lengths of the U-shaped accessories on three rows or multiple rows of the roller chains with the U-shaped accessories are changed to pitch lengths of two chain links, thereby enabling the end surfaces of the U-shaped accessories of the chain links in head-to-tail connection to abut against each other precisely, preventing the chains from bending and forming a rigid shore bearing a pressure on one side; a protuberant locking pin is arranged on the outer plane of each link of the U-shaped accessory; an ejector plate is connected at the upper end of an ejector of the roller chains, one side of the outer plane of the U-shaped accessories below the ejector plate is connected with a locking steel strip extending downwards and locking holes which are arranged and correspondingly matched with locking pins on the outer planes of both the links of the U-shaped accessories are arranged on the locking steel strip. The jacking-up mechanism of the sleeve roller chains has the beneficial effects that the jacking-up mechanism has the characteristics of a full-rigid column and the flexible chains, thereby enabling the self-height of a lifting table to be minimal under reliable jacking-up; the jacking-up transmission has the characteristics of reliability in transmission and high efficiency of the ordinary chains; with the help of local improvement of standard general parts, the structure is simple, the manufacturing is convenient and the cost is low.

Description

technical field [0001] The invention relates to the technical field of lifting machinery. It is a performing arts equipment used for a theater compensation lifting platform or a small lifting stage. It can also be used for load lifting in other occasions. It belongs to a special mechanical device and is a sleeve roller chain lifting mechanism. . Background technique [0002] At present, the lifting mechanisms in the known theater compensation lifting platform or small lifting stage and other lifting platform structures include screw-nut straight-top type, oil cylinder straight-top type, scissors support jack-up type, wire rope (or chain) pumping mechanism, etc. Pull the slide bar to lift step by step, chain lift, wire rope lift, large spiral lifting structure of Canadian GALA company and rigid chain lifting structure of French SERAPID company, etc. The above mechanisms are used in different occasions and different requirements for lifting platforms, and all have their own c...

AI Technical Summary

Problems solved by technology

Except for the latter two, the aforementioned structures all have the disadvantages of high equipment itself and deep machine pits, which limit installation and use under certain conditions.

The latter two structures overcome the aforementioned shortcomings, but their key parts are complex in structure, difficult to manufacture, and high in cost

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