Synchronous folding truss

A truss and inclined web bar technology, applied in the field of synchronous folding trusses, can solve the problems of unpredictable center of gravity position, uneven stress on telescopic members, hoisting accidents, etc., and achieve the effect of small cross-section of the bar, less quantity, and lower production cost.

Inactive Publication Date: 2017-07-14
WUDA JUCHENG STRUCTURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the uneven stress on the telescopic members of the truss, when the telescopic rods are not stretched synchronously in proportion, the unfolding or folding of each node of the truss will be out of sync.

Method used

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Such as Figure 1-4 A synchronously folded truss is shown, including diagonal webs 1, chords 2 and vertical webs 3 with openings at both ends. The lengths of the diagonals 1 and chords 2 are fixed, and two diagonal webs of equal length The top of rod 1 is connected to both ends of chord 2 through hinges, and the bottom end is connected to both ends of another chord 2 through hinges. Two diagonal rods 2 are arranged crosswise; The bottom ends of the roo...

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Abstract

The invention provides a synchronous folding truss. The synchronous folding truss comprises diagonal web members trepanned in two ends, chord members and vertical web members. The diagonal web members and the chord members are fixed in length. The top ends of two equilong diagonal web members are hinged at both ends of one chord member. The bottom ends of two equilong diagonal web members are hinged at both ends of the other chord member. The two diagonal web members are arranged in an intersecting mode. The top end of one diagonal web member and the bottom end of the other diagonal web member are hinged at both ends of the vertical web members correspondingly. The truss is composed of adding vertical web members, based on a plane mechanism with only one degree of freedom inside formed through chord members and crossed diagonal web members. The length of the vertical web members can be telescopically changed, the diagonal web members, the chord members and the vertical web members are hinged at nodes, the vertical web can be arranged in one or can be arranged in multiple according to needs, and the longitudinal folding or unfolding function of a truss system is realized by controlling the length of the vertical web members, and synchronous deformation between sections of the truss is ensured.

Description

technical field [0001] The invention relates to a synchronous folding truss. Background technique [0002] During bridge maintenance, it is often necessary to suspend a steel structure platform at the bottom of the bridge. When the span of the platform is greater than 6m, on-site production is generally adopted. This type of platform structure is inconvenient for transportation due to its large volume, cannot be reused, and has high cost and waste. Although prefabricated structures such as Bailey beams are convenient to transport, such shaped components cannot be compressed, and the transportation cost is high. If the working platform is designed as a truss assembled on-site with a single bar, although the transfer cost is low, the on-site assembly is labor-intensive and time-consuming. [0003] Chinese patent application No. 90222737.8 discloses an extended rod system unit structure, which transforms the truss into a geometrically variable system by releasing some rod en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/10
CPCE01D19/106
Inventor 周剑波高作平谭星舟陈明祥周志勇汤正俊
Owner WUDA JUCHENG STRUCTURE CO LTD
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