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Intelligent fastener and monitoring system thereof

A technology for monitoring systems and fasteners, applied to threaded fasteners, measuring devices, connecting components, etc., can solve the problems of large errors in judgment methods, high costs, troublesome use, etc., and achieve high precision

Pending Publication Date: 2018-06-05
上海应谱科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, it is troublesome to use, high in cost, and high in space requirements, so it can only be used in special occasions
[0007] None of the above methods can accurately control the bolt preload
After the equipment is put into operation, the real-time preload state of the bolted connection cannot be obtained
[0008] For this reason, there is currently a Chinese patent authorization announcement number CN201925305U (authorized announcement date 2011.08.10) disclosing a preload stress indicator bolt, but the bolt can only be compared with the standard color plate through the changed marking color, that is, through the color of the bolt. The strain value determines the magnitude of the pre-tightening force the bolt bears. This judgment method has large errors and is not suitable for high-precision occasions.

Method used

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  • Intelligent fastener and monitoring system thereof
  • Intelligent fastener and monitoring system thereof
  • Intelligent fastener and monitoring system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 1 The shown intelligent fastener includes a fastener body. The fastener body includes a deformation part and a connecting part. The deformation part is connected to a measuring unit. When the fastener body is installed, the connecting part drives the deformation part to deform and then Prompting the measuring unit to move generates a displacement, and after the displacement is obtained, the pretightening force is calculated by manual calculation or a predetermined formula. The fastener body in this embodiment is a bolt body 100. The bolt body 100 sequentially includes a threaded section 110, a middle polished rod section 120, and a head 130 from the first end to the second end. The middle polished rod section 120 of the bolt body 100 is deformed. The threaded section 110 at one end of the bolt body 100 is the connecting portion, and the head 130 of the bolt body 100 is the fixed end. Therefore, when the fastener body is installed, the connecting portion of th...

Embodiment 2

[0038] see figure 2 The shown intelligent fastener includes a fastener body. The fastener body includes a deformation part and a connecting part. The deformation part is connected to a measuring unit. When the fastener body is installed, the connecting part drives the deformation part to deform and then Prompting the measuring unit to move generates a displacement, and after the displacement is obtained, the pretightening force is calculated by manual calculation or a predetermined formula. The fastener body in this embodiment is a bolt body 100. The bolt body 100 sequentially includes a threaded section 110, a middle polished rod section 120, and a head 130 from the first end to the second end. The middle polished rod section 120 of the bolt body 100 is deformed. The threaded section 110 at one end of the bolt body 100 is the connecting portion, and the head 130 of the bolt body 100 is the fixed end. Therefore, when the fastener body is installed, the connecting portion of t...

Embodiment 3

[0042] see image 3 The shown monitoring system for an intelligent fastener includes at least one intelligent fastener as in Embodiment 1 above and a data processing system capable of processing the displacement acquired by the intelligent fastener. The way the data processing system processes the displacement obtained by the smart fastener includes but is not limited to calculating the displacement to obtain the pretightening force of the smart fastener or directly obtaining and displaying the displacement.

[0043] The data processing system in this embodiment includes a data receiving end 500, a data processor 600, and a remote server 700. The data receiving end 500 is connected to the displacement measuring device 400 by wired or wireless means, and the data receiving end 500 sends the data to the data processing system. Processor 600 to convert the displacement data acquired by the smart fastener into the pre-tightening force of the smart fastener or directly displayed da...

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Abstract

The invention discloses an intelligent fastener. The intelligent fastener comprises a fastener body and is characterized in that the fastener body comprises a deformation part and a connecting part, the deformation part is connected to a measuring unit, and when the fastener body is arranged, the connecting part drives the deformation part to deform so as to promote the measuring unit to move to generate displacement. The invention further discloses a monitoring system for the intelligent fastener. According to the intelligent fastener, the deformation quantity of the deformation part can be obtained through the displacement measured by the measuring unit, then the pre-tightening force is further calculated through manual calculation or a predetermined formula, and compared with a pre-tightening stress indicating bolt in the prior art, the intelligent fastener has the advantages of being high in precision and digitized in result.

Description

technical field [0001] The invention relates to the field of fasteners, in particular to an intelligent fastener and a monitoring system thereof. Background technique [0002] Due to the needs of production operations and the convenience of manufacturing, installation, maintenance, and transportation, equipment is often made into a detachable structure, and flange connection is the most common detachable connection structure. The flange connection needs to meet the requirements of flange strength, rigidity and reliable connection. The flange connection relies on bolts to compress the flange, so the pre-tightening force applied to the bolts in advance plays a very important role in the flange meeting the above requirements. [0003] At present, the methods for controlling the pretightening force of bolts include: torque method, nut rotation method, and hydraulic stretching method. The characteristics of each method are as follows: [0004] The torque method is to control t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/00G01B21/32
CPCF16B35/00G01B21/32G01L5/24
Inventor 陈洪德张洪武
Owner 上海应谱科技有限公司
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