CN109738106A - A kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state - Google Patents
A kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state Download PDFInfo
- Publication number
- CN109738106A CN109738106A CN201910027748.3A CN201910027748A CN109738106A CN 109738106 A CN109738106 A CN 109738106A CN 201910027748 A CN201910027748 A CN 201910027748A CN 109738106 A CN109738106 A CN 109738106A
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- bolt
- elastomer
- pull rod
- circuit board
- foil gauge
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Abstract
The invention discloses a kind of intelligent wireless bolts that can detect bolt pretightening and bent screws state, including bolt body, pull rod, elastomer, foil gauge, integrated circuit board, power supply unit, circuit board support and seal closure.Bolt body center is equipped with the centre bore of certain depth and diameter, pull rod is disposed in centre bore, one end and bolt body centre bore bottom of pull rod are affixed, and the other end and the elastomer of pull rod are kept in contact, elastomer is fixed on the end of bolt body, and foil gauge is arranged in distortional elastomer position.It is integrated with temperature sensor and signal processing, control, wireless transmission unit in integrated circuit board, and it is powered by power supply unit.The present invention by way of in deformation of the pull rod built in pitch to drive elastomer can accurate detection go out the size of bolt pretightening.Wireless transmission function can make intelligent bolt application more convenient.Structure of the invention is novel, ingenious in design, it is easy to accomplish, components are few, and it is reliable and stable, real time on-line monitoring can be carried out to pretightning force is bolted, reduce due to being bolted fail caused equipment fault and security risk, possess broad application prospect.
Description
Technical field
The invention belongs to industry and structural health monitoring technology fields, and in particular to a kind of to detect bolt pretightening and spiral shell
The intelligent wireless bolt of rod bending state.
Background technique
It is bolted in each technical field and suffers from very extensive application.Connected piece is due to prolonged alternation
The effect of the various factors such as load, vibration, impact, fatigue and corrosion is bolted and is easy loosening, overload, is even broken.Bolt
Connection may cause economic loss difficult to the appraisal and even jeopardize human life's safety once failing.Therefore, to key components and parts
Bolt connection real-time online bolt pretightening monitoring it is extremely important.
The pretightning force monitoring of the bolt mainly pretightning force of detection bolt in axial direction currently.The size and work of pretightning force
Screw-down torque, the material property of connected piece, bolt when part is installed is related to work piece interface frictional force etc..It is suitable to pre-tighten
Power is the premise for guaranteeing whole equipment or components and securely and reliably working.Intelligent bolt can real-time perception pretightning force size,
In equipment operation, once pre-tightening force value exceeds preset range, early warning can be issued, timely connecting component is overhauled, is prevented
Accident occurs.
Bolt pretightening Monitoring Status: the mode measured at present to bolt pretightening is varied, such as in bolt
Portion is embedded to the intelligent bolt of fiber laser arrays bolt pretightening, has the intelligent bolt using supercritical ultrasonics technology monitoring bolt length, also has
Measure the ring washer sensor of bolt pretightening on gasket indirectly by the way that sensing device to be mounted on.There are also one is in bolt
Internal embedded strain gauge directly measures the intelligent bolt of screw rod pulling force.Big, the detection device using built-in fiber measuring technique difficulty
It is expensive.Ultrasound examination is to the depth of parallelism and surface roughness of bolt both ends of the surface and the coherence request of coupling layer thickness
It is very high, it is difficult to ensure so as to cause ultrasound examination accuracy.In bolt inside center hole, the mode of direct embedded strain gauge exists
It is extremely difficult in actual production implementation, when the binding of filling needed for foil gauge built in centre bore glue can generate biggish to measurement
It is stagnant, cause detection accuracy to reduce and even fails.
Current most of intelligent bolts or intelligent gasket are wired connection mode.In engineer application, it is bolted
It usage amount few then tens, more then hundreds and thousands of, will be very troublesome using the intelligent bolt wiring installation of wired connection.This
Outside, for the monitoring of some particular surroundings, such as rotation class mechanical part and the high component wired connection side of some seal requests
Formula is difficult to carry out.
Solving problem above becomes the task of top priority.
Summary of the invention
To solve the problems such as existing intelligent bolt is at high cost, precision is low and wired connection bring is inconvenient for use sharp, this
Invention provides a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state.
To achieve the above object, technical solution of the present invention is as follows:
A kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state, including bolt body, pull rod, bullet
Property body, foil gauge, integrated circuit board, power supply unit, seal closure.The bolt body center is equipped in certain depth and diameter
Heart hole, one end of pull rod be fixed on the elongation that centre bore bottom generates when bottom in centre bore is used to transmit bolt body stress or
Shorten displacement, the other end of pull rod and the elastomer of bolt body end are kept in contact, and the mobile drive elastomer of pull rod produces
Raw corresponding deformation, the deflection that elastomer generates are detected by the foil gauge being arranged on elastomer.
Using the above built-in Tiebar structure mode, can effectively by bolt body stress when the dilatation that generates be transmitted to
It is installed on the elastomer of screw rod end, the flexible deflection of screw rod is directly proportional to the deflection of elastomer, passes through meter appropriate
Calculate and calibration, can be equivalent measure the current pretightning force of screw rod.This design structure is simple, and required components are few, is easy to real
It applies, it is low in cost.
As preferred: a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state is using multiple
Foil gauge is uniformly arranged in elastomer surrounding, to detect the stress deformation situation of different circumferential angle upper elastic bodies.Elasticity
Uneven deformation on body different angle direction is mainly since bent screws cause.By calculating on analysis different angle direction
Foil gauge response, can calculate the practical pretightning force and bending direction of screw rod indirectly.
As preferred: temperature sensor is integrated in integrated circuit board, and temperature sensor mainly detects current foil gauge
The environment temperature of work, and temperature-compensating is carried out to the response of foil gauge, reduce measurement error.
As preferred: elastomer and pull rod are designed as two independent parts to reduce production cost, by institute when installation
It states two parts to fix up according to design, detects the deformation of bolt body.
As preferred: seal closure be placed in the end of bolt body and by pull rod, elastomer, foil gauge, integrated circuit board,
In power supply unit is sealed in.
Compared with prior art, the beneficial effects of the present invention are: being converted elasticity for screw body by built-in pull rod
The mode of the deformation of body can accurate detection go out the size of bolt pretightening.The wireless transport module being integrated in circuit system
It is inconvenient for use that outside line connection bring can be effectively reduced, expand the application range of intelligent bolt.Structure of the invention is novel,
It is ingenious in design, it is easy to accomplish, components are few, reliable and stable, can carry out real time on-line monitoring to pretightning force is bolted, reduce by
In being bolted fail caused equipment fault and security risk, possess broad application prospect.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of intelligent bolt of the present invention；
Fig. 2 is intelligent bolt elastomer and Tiebar structure and scheme of installation；
Fig. 3 is intelligent bolt assembling schematic diagram；
Fig. 4 is intelligent bolt external structure schematic diagram.
Specific embodiment
The invention will be further described with attached drawing with reference to embodiments.
As shown in Figure 1 to 4, a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state, including
Bolt body (1), pull rod (2), elastomer (3), foil gauge (4), integrated circuit board (5), power supply unit (6), board support
Part (7) seal closure (8), bolt body (1) center are equipped with the centre bore of certain depth and diameter, one end of pull rod (2) and bolt
Main body (1) centre bore bottom is affixed, and the other end and the elastomer (3) of pull rod (2) are kept in contact, and elastomer (3) is fixed on bolt
The end of main body (1), foil gauge (4) are arranged in elastomer (3) deformation position.Integrated circuit board is integrated with temperature sensing in (5)
Device, signal processing, control and wireless transmission unit, integrated circuit board (5) can be powered it by power supply unit (6).
In practical applications, pull rod (2) extension end may be designed to multiple-branching construction form, each branch and elastomer (3)
Holding comes into full contact with, elastomer (3) also responsive to be designed to multiple-branching construction form.Foil gauge (4) is placed in distortional elastomer
Position and corresponding with pull rod (2) contact position and direction.The voltage output of foil gauge (4) is carried out by integrated circuit (5)
Analytic operation is ultimately converted to current bolted preload force value.
Designed intelligent bolt is there are many operating mode, and one of which is that exceptional value returns to operational mode, in the operation
Under mode, when pre-tightening threshold range of the force value beyond setting, the wireless communication module in integrated circuit (5) starts and will pre-tighten
Force value is sent to reception terminal together with the identity code when front bolt, receives terminal and carries out the exceptional value returned to intelligent bolt
Analysis processing, to determine to be bolted whether fail, low energy consumption for this operational mode.Another mode is wireless communication terminal request
Data pattern is read, under the mode operation, terminal is received and sends reading numerical values signal to intelligent bolt, to read current and go through
The value of history pretightning force.It is that the automatic Real-time Feedback preload force value of intelligent bolt gives reception terminal, the operation there are also a kind of operational mode
Intelligent bolt operation energy consumption is higher under mode.
Finally, it should be noted that foregoing description is only the preferred embodiment of the present invention, the present invention can not be carried out
Limit, those skilled in the art under the inspiration of the present invention, in the premise without prejudice to present inventive concept and claim
Under, multiple similar expressions can be made, such transformation is fallen within the scope of protection of the present invention.
Claims (6)
1. a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state, including bolt body (1), pull rod
(2), elastomer (3), foil gauge (4), integrated circuit board (5), power supply unit (6), circuit board support (7) seal closure (8).Its
Be characterized in that: bolt body (1) center is equipped with the centre bore of certain depth and diameter, is disposed with pull rod (2) in centre bore,
One end of the pull rod (2) and bolt body (1) centre bore bottom are affixed, and the other end of pull rod (2) keeps connecing with elastomer (3)
Touching, elastomer (3) are fixed on the end of bolt body (1), and foil gauge (4) is arranged in the deformation position of elastomer (3).Integrated electricity
Road plate (5) and power supply unit (6) pass through support rod (7) and are fixed on screw body (1) end, integrated circuit board (5) and foil gauge
(4) there is circuit connection.
2. a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state according to claim 1,
Be characterized in that: the elastomer (3) is fixed on the end at the non-threaded end of screw rod, and bolt body is fixed in described pull rod (2) one end
(1) bottom of centre bore, pull rod (2) other end are connect with elastomer (3), and bolt body (1) is due to being generated axis by external force
To elongating or shortening, the dilatation of bolt body (1) drives pull rod (2) to move along centre bore axial direction, the shifting of pull rod (2)
It is dynamic to drive elastomer (3) deformation, and eventually lead to the output electric quantity change for being placed in foil gauge (4) on elastomer (3).
3. a kind of intelligent wireless bolt for monitoring bolt pretightning force according to claim 2, it is characterised in that: at least
One foil gauge (4) is arranged on elastomer (3) for detecting the deformation of elastomer (3).
4. a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state according to claim 1,
It is characterized in that: being integrated with temperature sensor, signal processing, control and wireless transmission unit in the integrated circuit board (5), collect
At being powered by power supply unit (6) to it for circuit board (5).
5. a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state according to claim 4 supplies
Electric installation (6) can be energy storage battery, be also possible to the reception terminal of wireless power, be also possible to battery and wireless power receives
The component that terminal combines.
6. a kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state according to claim 1,
Be characterized in that: the seal closure (8) is fixed on bolt body (1) end and by pull rod (2), elastomer (3), foil gauge (4), collection
At circuit board (5), power supply unit (6) and circuit board support (7) include in being sealed in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027748.3A CN109738106A (en) | 2019-01-11 | 2019-01-11 | A kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027748.3A CN109738106A (en) | 2019-01-11 | 2019-01-11 | A kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109738106A true CN109738106A (en) | 2019-05-10 |
Family
ID=66364409
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910027748.3A Pending CN109738106A (en) | 2019-01-11 | 2019-01-11 | A kind of intelligent wireless bolt that can detect bolt pretightening and bent screws state |
Country Status (1)
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|---|---|
| CN (1) | CN109738106A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323843A (en) * | 2020-03-17 | 2020-06-23 | 中煤科工集团重庆研究院有限公司 | Device for detecting fastening state of mining explosion-proof shell fastener |
| CN111795056A (en) * | 2020-07-04 | 2020-10-20 | 孙浩 | Bolt |
| CN114318415A (en) * | 2022-01-11 | 2022-04-12 | 青岛双瑞海洋环境工程股份有限公司 | Anti-dismantling early warning system and method for electrolytic cell |
| CN114801302A (en) * | 2022-05-25 | 2022-07-29 | 华中科技大学 | Intelligent press machine with built-in deformation compensation module |
| GB2604113A (en) * | 2021-02-23 | 2022-08-31 | Jr Dynamics Ltd | Tension monitoring apparatus |
| CN115031885A (en) * | 2022-06-02 | 2022-09-09 | 浙江维思无线网络技术有限公司 | Bolt fastening force monitoring device and monitoring method thereof |
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| JPS60152927A (en) * | 1984-01-20 | 1985-08-12 | Nhk Spring Co Ltd | Axial-tension controlling method of clamping bolt and clamping bolt used in this method |
| US4636120A (en) * | 1986-06-02 | 1987-01-13 | The Babcock & Wilcox Company | Stud/bolt load gauge |
| US4823606A (en) * | 1988-06-23 | 1989-04-25 | Carron & Company | Diaphragm transducer for sensing loading |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323843A (en) * | 2020-03-17 | 2020-06-23 | 中煤科工集团重庆研究院有限公司 | Device for detecting fastening state of mining explosion-proof shell fastener |
| CN111323843B (en) * | 2020-03-17 | 2022-07-19 | 中煤科工集团重庆研究院有限公司 | Device for detecting fastening state of mining explosion-proof shell fastener |
| CN111795056A (en) * | 2020-07-04 | 2020-10-20 | 孙浩 | Bolt |
| CN111795056B (en) * | 2020-07-04 | 2021-11-09 | 浙江天力机车部件有限公司 | Bolt |
| GB2604113A (en) * | 2021-02-23 | 2022-08-31 | Jr Dynamics Ltd | Tension monitoring apparatus |
| WO2022180374A3 (en) * | 2021-02-23 | 2022-10-13 | JR Dynamics Limited | Tension monitoring apparatus |
| GB2604113B (en) * | 2021-02-23 | 2024-02-21 | Jr Dynamics Ltd | Tension monitoring apparatus |
| CN114318415A (en) * | 2022-01-11 | 2022-04-12 | 青岛双瑞海洋环境工程股份有限公司 | Anti-dismantling early warning system and method for electrolytic cell |
| CN114801302A (en) * | 2022-05-25 | 2022-07-29 | 华中科技大学 | Intelligent press machine with built-in deformation compensation module |
| CN115031885A (en) * | 2022-06-02 | 2022-09-09 | 浙江维思无线网络技术有限公司 | Bolt fastening force monitoring device and monitoring method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190510 |
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| WD01 | Invention patent application deemed withdrawn after publication |