Production process for standard knot of assembled lattice support bracket and installation jig

Abstract

The invention relates to a production process for a standard knot, in particular to the production process for the standard knot used in the fields of bridge and industry and civil building construction, and an installation jig. The installation jig comprises a bracket. Both ends of the bracket are respectively provided with two pairs of fixed struts. A pair of supporting struts is arranged between the fixed struts. The supporting struts are matched with the fixed struts at the ends of the bracket. The inside of each supporting strut is provided with a flange fixed position and a lug fixed position. By the installation jig, each part of the standard knot is positioned with the installation jig, and then the production of the standard knot is completed by fixed-position welding.

Description

technical field [0001] The invention relates to a manufacturing process of standard joints, in particular to a manufacturing process of standard joints used in the construction fields of bridges and industrial and civil buildings and a tire frame for installation. Background technique [0002] In the prior art, setting up formwork supports during the construction of mid-cast reinforced concrete structures and setting up independent supports or operating platforms during steel structure installation is an indispensable work content in building construction; only on various supports, supports or platforms can the reinforced concrete be completed. The cast-in-place work of the structure and the installation of the steel structure are an extremely important link in the building construction. The quality of the bracket, support or platform erection directly affects the construction quality, safety, construction period and cost. Therefore, all levels The construction administr...

AI Technical Summary

Problems solved by technology

There are generally two modes of erecting traditional brackets, supports or platforms: one is to use scaffolding steel pipes for erection, which is the most commonly used method. This method has the advantage of being extremely flexible, but this method also has disadvantages, mainly reflected in The following aspects: 1. The axis eccentricity of the rod is more serious

The rods in this erection mode are connected by fasteners, and there is an overlapping relationship between the rods and the rods. The axis eccentricity of the rods is at least 1 times the pipe diameter; 2. Force transmission low security

The internal force is transmitted between the rods in this mode by the friction between the fastener and the rod, and the magnitude of the friction is related to the tightening force of the fastener and the friction coefficient between the contact surfaces, which determines The size of the friction force has great randomness, and the safety of the force transmission method is low

3. Difficult to guarantee verticality

The standard cross-sectional size of the steel pipe for scaffolding is 48×3.5. Due to the small cross-section, it is easy to bend during application. Therefore, it is difficult to ensure the verticality of the bracket.

4. Large workload of installation, disassembly and transportation

This mode can overcome the above shortcomings, but it also has the following shortcomings: 1. There is no systematic consideration, so most of the brackets are consumed at one time, and the cost is high

2. Each application needs to be specially designed and produced, and the application is very troublesome, and requires high technical level of the application personnel, so it is difficult to promote

[0003] If the production of the standard section is made by the general method, it is difficult to achieve accurate positioning. When the four standard sections are assembled into a bracket, it is often difficult to locate each other, and the firmness and safety are greatly reduced. big security risk

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