CN215492179U - Real-time bolt pretightening force detection device based on piezoelectric effect - Google Patents
Real-time bolt pretightening force detection device based on piezoelectric effect Download PDFInfo
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- CN215492179U CN215492179U CN202120448774.6U CN202120448774U CN215492179U CN 215492179 U CN215492179 U CN 215492179U CN 202120448774 U CN202120448774 U CN 202120448774U CN 215492179 U CN215492179 U CN 215492179U
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 230000000694 effects Effects 0.000 title claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 39
- 239000011324 bead Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
The utility model discloses a real-time bolt pretightening force detection device based on a piezoelectric effect. The piezoelectric ceramic assembly shell is used for installing other elements, the piezoelectric elements are arranged in an annular groove of the piezoelectric ceramic assembly shell, the indicating lamps are evenly arranged on the outer side surface of the piezoelectric ceramic assembly shell and are respectively used for indicating whether overload occurs in the connection process or not, indicating whether bolt connection occurs or not is loosened, indicating whether the detection device normally works or not, and the amplifying circuit module, the control module and the power supply module are arranged in the groove in the inner side of the piezoelectric ceramic assembly shell. The bolt pretightening force detection device disclosed by the utility model can be used for effectively knowing the bolt connection state through the indication lamp to display the bolt pretightening force condition, is convenient for real-time monitoring, has a simple structure, is still in a standard size series in appearance, and is convenient to disassemble and the like.
Description
Technical Field
The utility model relates to the field of piezoelectric effect, in particular to a real-time bolt pretightening force detection device based on piezoelectric effect.
Background
The bolt connection has the advantages of reliability and convenience, and is widely applied to wood structures. The wood packing box is affected by continuous vibration load in the transportation process, so that bolt connection is loosened, internal connection can be out of work, and even the packing box is scattered finally. The state of bolt connection can be effectively known by monitoring the change of the pretightening force on the bolt, if the pretightening force is too small, the connection structure is unreliable, and similarly, if the pretightening force is too large, the bolt damages wood, and the unreliable effect of the connection structure is also brought. However, the bolt pretightening force is often detected without real-time measurement, external equipment or manual identification with rich experience is required, and the test cost is very high. Therefore, a real-time bolt pretightening force detection device with low cost and high efficiency is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the bolt pretightening force change is difficult to detect in the using process, and provides a real-time bolt pretightening force detection device based on a piezoelectric effect.
In order to achieve the purpose, the utility model adopts the following technical scheme: a real-time bolt pretightening force detection device based on a piezoelectric effect comprises a bolt, a gasket, a nut, a piezoelectric ceramic assembly shell, an indicator lamp assembly, a piezoelectric element, an amplifying circuit module, a control module and a power module, wherein the indicator lamp assembly comprises a first indicator lamp, a second indicator lamp and a third indicator lamp which are uniformly arranged on the outer side surface of the piezoelectric ceramic assembly shell, a through hole for the bolt to pass through is formed in the middle of the piezoelectric ceramic assembly shell, the nut is arranged in the through hole, an annular groove is formed in the inner side wall of the through hole of the piezoelectric ceramic assembly shell and is arranged above the nut, the piezoelectric element, the amplifying circuit module, the control module and the power module are fixed in the annular groove, and the piezoelectric element is electrically connected with the amplifying circuit module, the amplifying circuit module is electrically connected with the control module, the control module is respectively connected with the first indicator light, the second indicator light and the third indicator light, and the power supply module is connected with the control module to supply power to the device.
Preferably, the maximum projection of the piezoelectric ceramic component shell conforms to a standard size series of nuts, and the through hole in the piezoelectric ceramic component shell is matched with the standard size series of nuts.
Preferably, the width of the annular groove is smaller than the thickness of the piezoelectric element, the piezoelectric element is in contact with the nut, and the outer diameter of the annular groove is larger than the diameter of the piezoelectric element.
Preferably, the outer surface of the piezoelectric ceramic component shell is uniformly provided with a row of mounting grooves, and the first indicator light, the second indicator light and the third indicator light are respectively arranged in the mounting grooves.
Preferably, the first indicator light, the second indicator light and the third indicator light are all patch type led lamp beads, and are respectively red, yellow and green.
Preferably, the power module is a button cell, a fixing groove for placing the button cell is formed in the outer surface of the piezoelectric ceramic assembly shell, and the button cell is installed in the fixing groove.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the bolt pretightening force condition is displayed through a signal lamp, so that the real-time monitoring is facilitated.
(2) The power module is arranged on the outer side and is convenient to replace at any time.
(3) The whole piezoelectric ceramic component shell is simple in structure, the appearance is still standard size series, and the piezoelectric ceramic component shell is convenient to disassemble and the like.
Drawings
FIG. 1 is a schematic illustration of the present invention in use in connection with two test samples;
FIG. 2 is a cross-sectional view of a piezoceramic assembly housing;
FIG. 3 is a top view of the piezoceramic assembly housing after placement of the nut.
In the figure: the method comprises the following steps of 1-bolt, 2-gasket, 3-upper plate, 4-lower plate, 5-power module, 6-piezoelectric ceramic component shell, 7-piezoelectric element, 8-first indicator light, 9-second indicator light, 10-third indicator light and 11-nut.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the scope of the utility model should not be limited thereto. For convenience of explanation and understanding of the technical solutions of the present invention, the following descriptions are made with reference to the accompanying drawings.
Referring to fig. 1 and 2, the real-time bolt pretightening force detection device based on the piezoelectric effect comprises a bolt 1, a washer 2 and a nut 11, and further comprises a piezoelectric ceramic assembly shell 6, an indicator lamp assembly, a piezoelectric element 7, an amplification circuit module, a control module and a power module 5, wherein the bolt 1 connects an upper plate 3 and a lower plate 4 through the washer 2, the piezoelectric ceramic assembly shell 6, the piezoelectric element 7 and the nut 11. The indicating lamp assembly comprises a first indicating lamp 8, a second indicating lamp 9 and a third indicating lamp 10, the first indicating lamp 8, the second indicating lamp 9 and the third indicating lamp 10 are uniformly arranged on the outer side surface of a piezoelectric ceramic assembly shell 6, a through hole for the bolt to pass through is formed in the middle of the piezoelectric ceramic assembly shell 6, a nut 11 is arranged in the through hole, an annular groove is formed in the inner side wall of the through hole of the piezoelectric ceramic assembly shell 6 and arranged above the nut 11, a piezoelectric element 6, an amplifying circuit module, a control module and a power module 5 are fixed in the annular groove, the piezoelectric element 6 is electrically connected with the amplifying circuit module, the amplifying circuit module is electrically connected with the control module, and the control module is respectively connected with the first indicating lamp 8, the second indicating lamp 9 and the third indicating lamp 10, and the power supply module 5 is connected with the control module to supply power to the device.
The outer surface of the piezoelectric ceramic component shell 6 is uniformly provided with a row of mounting grooves, and the first indicator light 8, the second indicator light 9 and the third indicator light 10 are respectively arranged in the mounting grooves. The first indicator light 8, the second indicator light 9 and the third indicator light 10 are all patch type led lamp beads and are respectively red, yellow and green. When the bolt 1 starts to receive pretightening force, the nut 11 can extrude the piezoelectric element 7, the piezoelectric element 7 can generate piezoelectric effect due to pressure, voltage on the piezoelectric element changes, a voltage signal is amplified by an amplifier in the amplifying circuit module and then transmitted into the control module, and the control module respectively lights different indicator lamps according to the voltage signal.
The first indicator light 8 indicates whether the overload condition occurs in the connection process and exceeds the material limit or not, so that damage is caused; the second indicator light 9 indicates whether the bolt connection is still reliable or not and whether the bolt connection is loosened or not; the third indicator light 10 indicates whether the piezoceramic assembly housing is operating normally.
When the overload phenomenon occurs in the bolt tightening process, the pressure applied to the piezoelectric element 7 in the piezoelectric ceramic component shell of the nut 11 exceeds the set threshold value, the generated voltage signal also exceeds the set threshold value, and at the moment, the first indicator light 8 starts to emit red light to give an alarm according to the signal of the control module.
When the bolt is loosened in the screwing process, the pressure applied to the piezoelectric component 7 in the piezoelectric ceramic component shell is smaller than a certain threshold value, so that the generated voltage signal is also smaller than the set threshold value, and at the moment, the second indicator light 9 starts to emit yellow light to give an early warning according to the signal of the control module.
In order to avoid the problem generated during the operation of the piezoelectric ceramic component shell, a signal lamp is needed to indicate the operation state of the whole test system, when the whole piezoelectric ceramic component shell normally works, the third indicator lamp 10 can light green light, and if the third indicator lamp 10 is in a state of being extinguished all the time, the piezoelectric ceramic component shell is possibly damaged, and the detection of the pretightening force cannot be performed.
As shown in fig. 1 and 3, the maximum projection of the piezoelectric ceramic component shell conforms to the standard size series of nuts, and the through hole inside the piezoelectric ceramic component shell is matched with the standard size series of nuts. The appearance of the shell of the piezoelectric ceramic component is still in the standard size series of the nut, and the operation such as disassembly is convenient.
As shown in fig. 2, the width of the annular groove is smaller than the thickness of the piezoelectric element 7, the lower part of the piezoelectric element 6 is exposed out of the annular groove, the piezoelectric element 7 is in contact with the nut 11, when the bolt is screwed conveniently, the nut 11 extrudes the piezoelectric element 7, the outer diameter of the annular groove is larger than the diameter of the piezoelectric element, and the piezoelectric element 7 is conveniently embedded into the annular groove.
Preferably, the power module 5 is a button cell, a fixing groove for placing the button cell is formed in the outer surface of the piezoelectric ceramic assembly shell, and the button cell is installed in the fixing groove. The power module 5 is installed on the outside and is convenient to replace at any time.
The operation method comprises the following steps:
when the bolt and the nut are installed, the bolt 1 firstly penetrates through the gasket 2, then penetrates through the upper plate 3 and the lower plate 4, the standard-size nut 11 is installed on the pre-tightening force measurement piezoelectric ceramic assembly shell 6 with the power module 5, the piezoelectric element 7, the first indicator lamp 8, the second indicator lamp 9 and the third indicator lamp 10 assembled, the plate 3 and the plate 4 which need to be connected are connected through screwing the bolt or the pre-tightening force measurement piezoelectric ceramic assembly shell 6, and the pre-tightening force measurement effect is achieved.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various modifications can be made to the embodiments described in the foregoing embodiments, or some or all of the technical features of the embodiments can be equivalently replaced, and the modifications or the replacements do not make the essence of the corresponding technical solutions depart from the scope of the embodiments of the present invention.
Claims (6)
1. The utility model provides a real-time bolt pretightning force detection device based on piezoelectric effect, includes bolt, packing ring and nut, its characterized in that: the indicating lamp assembly comprises a piezoelectric ceramic assembly shell, an indicating lamp assembly, a piezoelectric component, an amplifying circuit module, a control module and a power module, wherein the indicating lamp assembly comprises a first indicating lamp, a second indicating lamp and a third indicating lamp, the first indicating lamp, the second indicating lamp and the third indicating lamp are uniformly arranged on the outer side surface of the piezoelectric ceramic assembly shell, a through hole for the bolt to pass is formed in the middle of the piezoelectric ceramic assembly shell, a nut is arranged in the through hole, an annular groove is formed in the inner side wall of the through hole of the piezoelectric ceramic assembly shell and is arranged above the nut, the piezoelectric component, the amplifying circuit module, the control module and the power module are fixed in the annular groove, the piezoelectric component is electrically connected with the amplifying circuit module, and the amplifying circuit module is electrically connected with the control module, the control module is respectively connected with the first indicator light, the second indicator light and the third indicator light, and the power module is connected with the control module to supply power to the device.
2. The real-time bolt pretension detection device based on piezoelectric effect according to claim 1, characterized in that: and the through hole in the piezoelectric ceramic component shell is matched with the standard size series nut.
3. The real-time bolt pretension detection device based on piezoelectric effect according to claim 1, characterized in that: the width of annular groove is less than piezoelectric components thickness, piezoelectric components with the nut contacts, the external diameter of annular groove is greater than piezoelectric components diameter.
4. The real-time bolt pretension detection device based on piezoelectric effect according to claim 1, characterized in that: the outer surface of the piezoelectric ceramic component shell is uniformly provided with a row of mounting grooves, and the first indicator light, the second indicator light and the third indicator light are arranged in the mounting grooves respectively.
5. The real-time bolt pretension detection device based on piezoelectric effect according to claim 1, characterized in that: the first indicator light, the second indicator light and the third indicator light are all patch type LED lamp beads and are respectively red, yellow and green.
6. The real-time bolt pretension detection device based on piezoelectric effect according to claim 1, characterized in that: the power module is a button cell, a fixing groove for placing the button cell is formed in the outer surface of the piezoelectric ceramic component shell, and the button cell is installed in the fixing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448774.6U CN215492179U (en) | 2021-03-02 | 2021-03-02 | Real-time bolt pretightening force detection device based on piezoelectric effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448774.6U CN215492179U (en) | 2021-03-02 | 2021-03-02 | Real-time bolt pretightening force detection device based on piezoelectric effect |
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| CN215492179U true CN215492179U (en) | 2022-01-11 |
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| CN202120448774.6U Expired - Fee Related CN215492179U (en) | 2021-03-02 | 2021-03-02 | Real-time bolt pretightening force detection device based on piezoelectric effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458677A (en) * | 2022-01-18 | 2022-05-10 | 中铁第四勘察设计院集团有限公司 | Anti-loosening anchor bolt and installation method thereof |
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2021
- 2021-03-02 CN CN202120448774.6U patent/CN215492179U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458677A (en) * | 2022-01-18 | 2022-05-10 | 中铁第四勘察设计院集团有限公司 | Anti-loosening anchor bolt and installation method thereof |
| CN114458677B (en) * | 2022-01-18 | 2023-06-02 | 中铁第四勘察设计院集团有限公司 | Anti-loosening anchor bolt and installation method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |