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Scissor type folding truss

A scissor-type, truss technology, used in the erection/assembly of bridges, bridge parts, bridge maintenance, etc., can solve problems such as uneven force on expansion and contraction members, hoisting accidents, and unsynchronized unfolding or folding of trusses. high effect

Inactive Publication Date: 2017-07-14
HUBEI WUDA LUOJIA INSPECTION & CONSULTATION OF ENG STRUCTURE
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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 scissors-type folding truss is shown, including diagonal webs 1, chords 2 and vertical webs 3, the lengths of the diagonals 1 and chords 2 are fixed, and the middle positions of the two diagonals 1 are opened Hinged connection through scissors-type crossing; the ends of the two diagonal rods 1 are perforated and hingedly connected to one end of a chord 2, and the other ends of the two chords 2 at corresponding positions are perfora...

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Abstract

The invention provides a scissor type folding truss. The scissor type folding truss comprises diagonal web members, chord members and vertical web members. The diagonal web members and the chord members are fixed in length. The middle positions of the two diagonal web members are trepanned and are hinged with each other in a scissor type mode. The ends of the two diagonal web members are trepanned and are hinged with one end of one chord member. The other ends of the two chord members of the corresponding positions are trepanned and are hinged with each other. The vertical web members are telescopic. One end of each vertical web member is fixed to the position that the two chord members are hinged with each other in a hinged mode and the other end of each vertical web member is fixed to the position that the two diagonal web members are hinged with each other in a hinged mode. According to the scissor type folding truss, the chord members and the vertical web members are added to a scissor type folding extension device, the length of the vertical web members can be telescopically changed, a scissor type folding mechanism composed of the chord members, the vertical web members and the diagonal web members are hinged at nodes, 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 scissors type folding truss. Background technique [0002] In the process of bridge maintenance, it is often necessary to hang a steel structure platform at the bottom of the bridge. When the span of the platform is greater than 6m, it is generally made on site. 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 end ...

Claims

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Application Information

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IPC IPC(8): E01D22/00E01D19/10
CPCE01D19/106E01D22/00
Inventor 周剑波高作平谭星舟陈明祥周志勇汤正俊
Owner HUBEI WUDA LUOJIA INSPECTION & CONSULTATION OF ENG STRUCTURE
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