Intelligent bolts and methods of their use

A technology of intelligent bolts and bolts, applied in the direction of screws, threaded fasteners, optical devices, etc., can solve problems such as time-consuming and achieve the effect of simple manufacturing

Active Publication Date: 2019-04-02
STRAIN LABS AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, when modifying standard solid bolts to provide cavities for smart bolts, extensive machining is required when solid bolts are made of, for example, stainless steel, Hastelloy- or similar materials, this can be time consuming

Method used

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  • Intelligent bolts and methods of their use
  • Intelligent bolts and methods of their use
  • Intelligent bolts and methods of their use

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Embodiment Construction

[0072] The following detailed description illustrates embodiments of the disclosure and the manner in which they can be implemented. While certain modes of carrying out the disclosure have been disclosed, those skilled in the art will recognize that other embodiments are possible for carrying out or practicing the disclosure.

[0073] In one aspect, there is provided a smart bolt comprising a head region coupled to a threaded region, wherein the head region includes a bolt cavity, wherein the distance between the head region and the bottom end of the bolt cavity is operatively changes according to the longitudinal stress applied between the threaded area and the head area, and wherein the smart bolt includes sensor means for measuring the change in the distance between the head area and the bottom end of the bolt cavity, characterized in that :

[0074] the sensor device is mounted in the head region such that the sensor device is spatially referenced to the head region; and ...

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Abstract

An intelligent bolt (10) includes a head region (40) and a threaded region (20). The head region includes a bolt cavity (60). A distance between the head region and a bottom end of the cavity changesin operation as a function of longitudinal stress applied between the threaded region and the head region, and the bolt includes a sensor arrangement (100) for measuring changes in the distance. A distal end of the sensor arrangement is disposed adjacent to the bottom end, wherein changes in spatial position of the bottom end relative to the distal end occur as a function of changes in the stressapplied to the bolt to define a gap (G) whose size varies depending upon the stress. Interrogating radiation transmission in operation via the gap from a source to a corresponding radiation sensor ofthe arrangement generates a stress measurement signal that is processed for wireless communication.

Description

technical field [0001] The present disclosure relates to smart bolts having built-in sensing functionality to measure strain applied to the smart bolt in operation; the smart bolt is operable to function as a smart fastener. Additionally, the present disclosure relates to methods of measuring strain applied to the smart bolts described above in operation. Furthermore, the present disclosure relates to a method of manufacturing the aforementioned smart bolt. Background technique [0002] Rivets and bolts have been used to hold components together for over a century. However, bolted connections offer advantages over rivets in that they can be applied more quickly than rivets, they require less stress than rivets to be applied to the parts when joining the parts together, and are easier to remove later. However, a bolted connection needs to be preloaded, ie a static stress leading to a corresponding static strain, to avoid the bolted connection becoming loose during operation...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16B31/02
CPCF16B31/02Y02E10/50F16B31/025G01L5/24F16B2031/022G01B11/16H02S99/00H02J50/10
Inventor乔鲍·马德鲁马茨·利尔加
OwnerSTRAIN LABS AB