Telescopic mechanism

Abstract

The invention discloses a telescopic mechanism. The telescopic mechanism comprises three groups or more than three groups of telescopic unit components which are connected in series in a side-by-side manner and can do telescopic movement by connection with each other, wherein all the groups of telescopic unit components are connected in sequence in a side-by-side manner by connecting blocks and enclose to form a polygonal frame structure; each telescopic unit component comprises a plurality of groups of telescopic units hinged in sequence in a head-to-end manner; and the telescopic unit comprises two telescopic arms which are hinged by respective central parts in a crossing manner. The telescopic mechanism disclosed by the invention has the advantages that all the groups of telescopic unit components can do synchronous movement, and the telescopic stability can be improved, so that the stressing of the whole telescopic mechanism is uniform; all the telescopic arms hinged in a crossing manner form a triangular structure, so that the smoothness of operation and the super-strong stability of the three-dimensional structure can be effectively guaranteed.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a telescoping mechanism. Background technique [0002] Telescopic mechanism is an important structure of hoisting machinery. The telescopic mechanism of the crane includes a boom telescopic mechanism and an outrigger retractable mechanism. The function of the boom telescopic mechanism is to change the length of the boom to obtain the required range and lifting height to meet the operation requirements. The purpose of the outrigger retractable mechanism is to increase the base area of ​​the crane, adjust the slope of the site, improve the stability against overturning, and increase the lifting capacity. [0003] At present, many telescopic mechanisms, especially large-scale traditional telescopic mechanisms, consist of a top frame, a bottom frame, and an attached frame in the middle connected end to end, and are stretched by sliding or folding in large sections. The force of...

AI Technical Summary

Problems solved by technology

[0003] At present, many telescopic mechanisms, especially large-scale traditional telescopic mechanisms, consist of a top frame, a bottom frame, and an attached frame in the middle connected end to end, and are stretched by sliding or folding in large sections. The force of this mechanism is extremely stable. The performance is relatively poor, and it cannot withstand high pressure. When the stretching range of the telescopic mechanism is longer, the top shakes more; this kind of mechanism cannot be stretched too long due to the limitation of power, and the force arm is very heavy. , and length are limited; this kind of mechanism has complex structure, high cost, and difficult transfer and transportation; and it cannot run quickly. For example, in fire rescue, the length and height can determine whether the rescue is successful, and the stretching speed determines the efficiency of the rescue.

Therefore, it has become the Achilles' heel of high-rise fire protection

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