Connector with rotation-stop nuts, and installation method thereof

A technology of anti-rotation nut and connector, which is applied in the field of structural parts, can solve the problems that the connection reliability of high-strength threaded steel bars or steel rods cannot be guaranteed, the reliability and service life of the anchoring structure can be reduced, and the development requirements of prestressed engineering cannot be met. To achieve the effect of reducing anchorage failure, improving reliability and effectiveness, and improving connection reliability

Active Publication Date: 2014-11-26
LIUZHOU OVM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, the high-strength threaded steel bar or steel rod connector has a high load level, and the reliable connection length between the connected two high-strength threaded steel bars or steel bars and the connector must be guaranteed; due to the site, installation process and operating conditions Influence, the connector often loosens, resulting in the need for repeated inspections and rework in actual use, increasing the workload of installation and inspection, and also increasing the safety risk of engineering use, reducing the reliability and service life of the anchoring structure ; Therefore, the currently commonly used high-strength threaded steel bars or steel bar connectors cannot meet the development needs of prestressed engineering
[0004] In engineering applications, the commonly used high-strength threaded steel bars or steel bar connectors 6 also use lock nuts 5 to prevent loosening, such as Figure 5 As shown, but the lock nut 5 does not have the anti-rotation function, the high-strength threaded steel bar or steel rod 11, 12 will still be loosened from the lock nut as a whole, and the connector cannot guarantee the reliability of the high-strength threaded steel bar or steel bar connection. endanger engineering safety

Method used

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  • Connector with rotation-stop nuts, and installation method thereof
  • Connector with rotation-stop nuts, and installation method thereof
  • Connector with rotation-stop nuts, and installation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: A connector with a stop nut

[0036] like figure 1 As shown, the connector with stop nuts includes a connector body 3 and stop nuts 2 installed at both ends of the connector body. The two ends of the connector body 3 are double cones, and the first cone at the end The angle α between the surface 301 and the second tapered surface 302 is 0~10o, and there is a ring-shaped protruding detent key 303 on the end of the second cone surface 302, and the outer cone surface of the detent key on the first cone surface 301 ( see figure 2 ), the inner hole of the connector body 3 has a continuous full thread that matches the high-strength threaded steel bar or steel bar; such as image 3 , Figure 4-1 to Figure 4-3 As shown, the anti-rotation nut 2 is a Haval nut split in two halves, the inner hole of the anti-rotation nut has a thread that matches the high-strength threaded steel bar or steel rod, and one end of the anti-rotation nut 2 has a The positioning groo...

Embodiment 2

[0039] Embodiment 2: A method for installing a connector with a stop nut, which includes the following steps:

[0040] A. Screw-in connector body

[0041] Screw the connector body 3 onto one end of the threaded steel bar or steel rod 11 to be connected;

[0042] B. Reverse screw-on connector body

[0043] Close the end face of another threaded steel bar or steel rod 12 that needs to be lengthened and the end face of the threaded steel bar or steel rod 11 that has been screwed on the connector body 3 on the same axis, and reversely screw the connector body 3 to Mark the position to complete the installation of the connector body 3;

[0044] C. Install the stop nut

[0045] Fasten the Haval type anti-rotation nut to the threaded steel bars or steel rods on the outer sides of the connector body 3, use the inner thread of the anti-rotation nut to rotate the anti-rotation nut to the connector, when the positioning groove 203 of the annular double inner cone surface When fasten...

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Abstract

The invention relates to a connector with rotation-stop nuts. The connector comprises a connector body and the rotation-stop nuts mounted on the two ends of the connector body; wherein the two ends of the connector body are double-cone surfaces; rotation-stop keys with circular projections are arranged on the end portions of the second cone surfaces; the first cone surfaces are the outer cone surfaces of the rotation-stop keys; the inner hole of the connector body has continuous full thread matching with high-strength thread steel or steel bars; the rotation-stop nuts are two opposite half nuts; the inner hole of the nuts have threads matching with the high-strength thread steel or steel bars; one end of each rotation-stop nut has a position concave groove matching with the end socket inclined surface of the connector body and the rotation-stop keys; each half nut is provided with an ear plate and a bolt hole for installing a bolt; the two half nuts are connected into a whole through the bolt; and the outer diameter of each rotation-stop nut of the connector is the same as that of the connector body. The connector is simple in connection method, can make the steel connected compactly and reliably, saves installation space greatly, reduces labor intensity of the installation effectively, and increases installation efficiency.

Description

technical field [0001] The invention relates to a structural member used in the fields of buildings, bridges, prestressed rock and soil, etc., in particular to a connector for connecting high-strength threaded steel bars or steel bars. Background technique [0002] In the fields of construction, bridges and prestressed rock and soil, high-strength threaded steel bars or steel bars are widely used, and the length of high-strength threaded steel bars or steel bars is generally extended by connectors. [0003] Generally, the high-strength threaded steel bar or steel rod connector has a high load level, and the reliable connection length between the connected two high-strength threaded steel bars or steel bars and the connector must be guaranteed; due to the site, installation process and operating conditions Influence, the connector often loosens, resulting in the need for repeated inspections and rework in actual use, increasing the workload of installation and inspection, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/16E04G21/12E01D19/00E01D21/00
Inventor 甘国荣朱万旭黄建国付委杨开壮
Owner LIUZHOU OVM MASCH CO LTD
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