CN215984977U - Monitoring device - Google Patents
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- CN215984977U CN215984977U CN202120655358.3U CN202120655358U CN215984977U CN 215984977 U CN215984977 U CN 215984977U CN 202120655358 U CN202120655358 U CN 202120655358U CN 215984977 U CN215984977 U CN 215984977U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 238000013016 damping Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000011158 quantitative evaluation Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides a monitoring device, which is used for monitoring bolt pretightening force and comprises: the device comprises an outer cover, a conductive piece, a power supply module, an acquisition module and a wireless transmission module; one end of the conductive piece is used for being in contact connection with the piezoelectric sensing module, and the power supply module is electrically connected with the acquisition module and the wireless transmission module; the other end of the conductive piece is connected with the acquisition module, and the acquisition module is used for acquiring the electric signal generated by the piezoelectric sensing module; the wireless transmission module is connected with the acquisition module and used for transmitting the signals transmitted by the acquisition module. The utility model provides a wireless distributed bolt pretightening force monitor which can quantitatively monitor the change condition of the bolt connection pretightening force, further judge the structure connection quality and determine whether the instrument needs to be maintained or not and has failure risk or not. The monitoring device provided by the utility model has the advantages of small volume, simple installation and wide application prospect.
Description
Technical Field
The utility model relates to the technical field of monitoring devices, in particular to a monitoring device.
Background
The bolt connection is a main structure connection form, and the connection quality directly influences the service performance of equipment or facilities, and even causes accidents or disasters. Therefore, the bolt connection is ensured to be reliable, and the problem that the bolt connection cannot be avoided in engineering is solved. The bolt installation and inspection by a torque method can not meet engineering requirements, particularly for a structural connection part needing periodic inspection, the inspection efficiency of a manual wrench is low, the cost is high, and the connection quality can not be quantitatively evaluated.
At present, methods such as a sensor method, an implanted strain gauge method, an ultrasonic method and the like are used for monitoring the quality of bolt connection. Wherein the sensor method can change the connection structure and is not suitable for engineering application; the implantation strain method can realize wireless transmission, but needs to punch the bolt, influences the strength of the bolt, has high requirements on bolt preparation, and is not suitable for large-area engineering application. The ultrasonic method has low requirement on the surface of the bolt, does not need to punch the bolt, and is more suitable for engineering application. Some methods such as video marking or monitoring of bolt rotation angle can achieve qualitative evaluation effect, but quantitative evaluation accuracy is low. At present, a commercially available bolt pretightening force measuring instrument is available, but the bolt pretightening force measuring instrument is large in size, complex in system connection, high in cost and incapable of meeting the requirement of monitoring a large amount of bolts, and needs to be connected with a computer host, a display and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a monitoring device for solving the problems existing in the existing device for monitoring the quality of bolt connection: the bolt needs to be punched, the strength of the bolt is influenced, the requirement on the bolt preparation is high, the bolt is not suitable for large-area engineering application, and the monitoring and quantitative evaluation precision is low.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model provides a monitoring device for monitoring bolt pretightening force, which comprises:
a housing having a cavity with an opening therein, said cavity having disposed therein: the device comprises a conductive piece, a power supply module, an acquisition module and a wireless transmission module;
one end of the conductive piece is used for being in contact connection with the piezoelectric sensing module, and the power supply module is electrically connected with the acquisition module and the wireless transmission module;
the other end of the conductive piece is connected with the acquisition module, and the acquisition module is used for acquiring the electric signal generated by the piezoelectric sensing module;
the wireless transmission module is connected with the acquisition module and used for transmitting the signals transmitted by the acquisition module.
Further, the monitoring device further comprises: the first magnetic ring is arranged in the cavity, and the outer side wall of the first magnetic ring is connected with the inner wall of the outer cover.
Further, the first magnetic ring is disposed adjacent to the opening of the cavity.
Further, the outer side wall of the outer cover is provided with threads.
Further, the monitoring device further comprises: the piezoelectric sensing module is positioned below the outer cover, and one end of the conductive piece is electrically connected with the piezoelectric sensing module.
Furthermore, the piezoelectric sensing module comprises a piezoelectric wafer, and one end of the conductive piece is electrically connected with the piezoelectric wafer; or
The piezoelectric sensing module comprises a piezoelectric wafer and a temperature sensor, and one end of the conductive piece is electrically connected with the piezoelectric wafer and the temperature sensor.
Further, the piezoelectric sensing module further includes:
and the protective film is positioned on one side of the piezoelectric wafer far away from the conductive piece.
Further, the piezoelectric sensing module further includes: a housing connected to the enclosure, the housing having a chamber therethrough;
the piezoelectric sensing module and the second magnetic ring are arranged in the cavity, the outer side wall of the second magnetic ring is connected with the inner side wall of the shell, and the first magnetic ring and the second magnetic ring can be attracted magnetically.
Further, the piezoelectric sensing module includes:
the piezoelectric chip is connected with the contact structure, one end of the contact structure is connected with one end of the conductive piece, and the other end of the contact structure is electrically connected with the piezoelectric chip.
Further, the piezoelectric sensing module further includes: the damping block is positioned in the cavity and between the second magnetic ring and the contact structure, and the damping block is positioned on one side, close to the conductive piece, of the piezoelectric wafer.
The embodiment of the utility model has at least the following technical effects:
according to an embodiment of the utility model, the monitoring device is used for monitoring bolt pretightening force and comprises: a housing having a cavity with an opening therein, said cavity having disposed therein: the device comprises a conductive piece, a power supply module, an acquisition module and a wireless transmission module; one end of the conductive piece is used for being in contact connection with the piezoelectric sensing module, and the power supply module is electrically connected with the acquisition module and the wireless transmission module; the other end of the conductive piece is connected with the acquisition module, and the acquisition module is used for acquiring the electric signal generated by the piezoelectric sensing module; the wireless transmission module is connected with the acquisition module and used for transmitting the signals transmitted by the acquisition module. The utility model provides a wireless distributed bolt pretightening force monitor which can quantitatively monitor the change condition of the bolt connection pretightening force, further judge the structure connection quality and determine whether the instrument needs to be maintained or not and has failure risk or not. The monitoring device provided by the utility model has the advantages of small volume, simple installation and wide application prospect.
Drawings
FIG. 1 is a schematic diagram of a monitoring device;
FIG. 2 is a schematic structural diagram of a piezoelectric sensing module;
FIG. 3 is a schematic view of a monitoring device in threaded connection with a stud via a transfer ring;
FIG. 4 is a schematic view of another configuration of the monitoring device;
FIG. 5 is a schematic view of a monitoring device in connection with a bolt;
FIG. 6 is a schematic view of another construction of the monitoring device in connection with the bolt;
FIG. 7 is a schematic view of a monitoring device engaged with a bolt;
fig. 8 is another schematic view of the monitoring device engaged with the bolt.
Reference numerals
A housing 1; a conductive member 2; a power supply module 3; an acquisition module 4; a wireless transmission module 5; a first magnetic ring 6;
a piezoelectric sensing module 7; a piezoelectric wafer 71; a protective film 72; a housing 73; a second magnetic ring 74; a contact structure 75; a damping block 76;
an adapter ring 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A monitoring device according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 8.
As shown in fig. 1 to 2, a monitoring device according to an embodiment of the present invention is used for monitoring bolt pretension, and includes: a housing 1, said housing 1 having a cavity with an opening therein, said cavity having disposed therein: the device comprises a conductive piece 2, a power supply module 3, an acquisition module 4 and a wireless transmission module 5; one end of the conductive piece 2 is used for being in contact connection with a piezoelectric sensing module 7, and the power supply module 3 is electrically connected with the acquisition module 4 and the wireless transmission module 5; the other end of the conductive piece 2 is connected with the acquisition module 4, and the acquisition module 4 is used for acquiring an electric signal generated by the piezoelectric sensing module 7; the wireless transmission module 5 is connected with the acquisition module 4 and is used for transmitting the signals transmitted by the acquisition module 4.
Specifically, the monitoring device provided by the utility model mainly comprises a conductive member 2, a power supply module 3, an acquisition module 4 and a wireless transmission module 5, wherein the conductive member 2 can be a probe or a wire, for example, the conductive member 2 can be a probe, the probe can be single-path or multi-path, depending on whether temperature measurement is required simultaneously, and whether the electrodes of the piezoelectric wafer are on the same side or on the opposite side.
Fig. 5 is a schematic structural view of a monitoring device directly connected with a bolt, and a specific method and principle for detecting and monitoring the pretightening force of the bolt by using the monitoring device provided by the utility model are as follows: the piezoelectric sensing module 7 is attached to the end face of the bolt or the stud, one end of the conductive piece 2 is used for being in contact connection with the piezoelectric sensing module 7, and the power supply module 3 supplies power to the whole monitoring device. Piezoelectric sensing module 7 produces the signal of telecommunication and transmits to collection module 4 through electrically conductive 2 after circular telegram, and collection module 4 can gather the signal, can also have data acquisition and analysis processes's function concurrently simultaneously, and collection module 4 is connected with wireless transmission module 5 electricity, and wireless transmission module 5 obtains data signal in with collection module 4 and transmits, can also send monitoring result data. The acquisition module 4 can process the acquired signal, acquire the monitoring data of bolted connection pretightning force according to the acquired signal, and then acquire the change situation of bolted connection pretightning force, and the monitoring data of bolted connection pretightning force can be transmitted to other equipment through the wireless transmission module 5. The utility model provides a wireless distributed bolt pretightening force monitor which can quantitatively monitor the change condition of the bolt connection pretightening force, further judge the structure connection quality and determine whether the instrument needs to be maintained or not and has failure risk or not. In the monitoring process, the bolt does not need to be punched, the strength of the bolt is not influenced, the bolt preparation requirement is not high, the method is suitable for large-area engineering application, and the monitoring quantitative evaluation precision is high.
According to some embodiments of the utility model, the monitoring device further comprises: the first magnetic ring 6 is arranged in the cavity, and the outer side wall of the first magnetic ring 6 is connected with the inner wall of the outer cover 1.
According to some embodiments of the utility model, the first magnetic ring 6 is arranged adjacent to an opening of the cavity. Aiming at the first magnetic ring 6 included in the monitoring device, the first magnetic ring is arranged in the outer cover 1, is adjacent to the opening of the cavity of the outer cover 1, and is connected with the inner wall of the outer cover 1. The main purpose of arranging the first magnetic ring 6 is as follows: if the bolt to be monitored is a magnetic bolt, the monitoring device can be fixed on the bolt through the magnetic force between the first magnetic ring 6 and the magnetic bolt, and is simple and convenient.
According to some embodiments of the utility model, the outer side wall of the housing 1 is threaded. The utility model aims to provide threads on the outer side wall of the outer cover 1: if the bolt to be monitored is a non-magnetic bolt, for example, a titanium alloy or a stainless steel material, the monitoring device cannot be fixedly connected with the bolt through magnetic force. In this case, the adapter ring 8 can be connected to the adapter ring by a screw thread, and the adapter ring 8 is connected to a nonmagnetic bolt tail or a stud to fix the adapter ring. The connection of the adapter ring 8 to the screw is schematically illustrated in fig. 3.
According to further embodiments of the present invention, the monitoring device further comprises: and the piezoelectric sensing module 7 is positioned below the outer cover 1, and one end of the conductive piece 2 is electrically connected with the piezoelectric sensing module 7. In this monitoring device, it can be understood that the structure is more stable than the above monitoring device by combining the above monitoring device with the piezoelectric sensing module 7. The piezoelectric sensing module 7 may be a flanged (electrodes on the same side) or non-flanged (electrodes on the opposite side) piezoelectric wafer, or a piezoelectric wafer assembly with a temperature sensor. The schematic structure of the monitoring device connected with the bolt is shown in figure 6.
As shown in fig. 2 or fig. 4, according to other embodiments of the present invention, a piezoelectric wafer 71 is included in the piezoelectric sensing module 7, and one end of the conductive member 2 is electrically connected to the piezoelectric wafer 71; or the piezoelectric sensing module 7 comprises a piezoelectric wafer and a temperature sensor, and one end of the conductive member 2 and the piezoelectric wafer 71 are electrically connected with the temperature sensor.
According to further embodiments of the present invention, the piezoelectric sensing module 7 further comprises: and the protective film 72 is positioned on one side of the piezoelectric wafer 71 far away from the conductive piece 2. The protective film 72 is used for protecting the piezoelectric wafer 71, the protective film 72 can be omitted for the flanged piezoelectric wafer 71, and meanwhile, for the non-flanged piezoelectric wafer 71, the protective film 72 is connected with one of the contacts of the conductive piece 2 to obtain the effect of stable signal grounding.
According to further embodiments of the present invention, the piezoelectric sensing module 7 further comprises: a housing 73, the housing 73 being connected to the housing 1, for example, the housing 73 being detachably connected to the housing 1, the housing 73 having a chamber therethrough, the housing 73 and the housing 1 may be cylindrical, and the axes of the housing 73 and the housing 1 may be collinear; the piezoelectric sensing module 7 and the second magnetic ring 74 are arranged in the cavity, the outer side wall of the second magnetic ring 74 is connected with the inner side wall of the housing 73, the first magnetic ring 6 and the second magnetic ring 74 can be magnetically attracted, the housing 73 and the housing 1 can be detachably connected through the magnetic attraction of the first magnetic ring 6 and the second magnetic ring 74, and the housing 73 and the housing 1 can be connected together or separated as required. In the present invention, the first magnetic ring 6 and the second magnetic ring 74 are magnetically attracted to each other, so that the piezoelectric sensing module 7 can be combined with the monitoring device not including the piezoelectric sensing module 7, and when the housing 1 and the casing 73 are integrated, the first magnetic ring 6 can be omitted.
According to further embodiments of the present invention, the piezoelectric sensing module 7 comprises: the piezoelectric sensor comprises a piezoelectric wafer 71 and a contact structure 75, wherein one end of the contact structure 75 is connected with one end of the conductive piece 2, the other end of the contact structure 75 is electrically connected with the piezoelectric wafer 71, and a signal monitored by the piezoelectric wafer 71 can be transmitted to the acquisition module 4 through the contact structure 75 and the conductive piece 2 and is transmitted through the wireless transmission module 5. The first magnetic ring 6 and the second magnetic ring 74 are magnetically attracted to each other, so that the piezoelectric sensing module 7 and the monitoring device not including the piezoelectric sensing module 7 can be combined together, and accurate connection between the conductive member 2 and the contact structure 75 can be ensured. The position of the conductor 2 and the contact structure 75 may correspond, for example, the conductor 2 and the contact structure 75 may be collinear to facilitate a contact connection.
According to further embodiments of the present invention, the piezoelectric sensing module 7 comprises: the damping block 76, the damping block 76 is located in the cavity, the damping block 76 may be a plastic or rubber member and is located between the second magnetic ring 74 and the contact structure 75, and the damping block 76 is located on a side of the piezoelectric wafer 71 close to the conductive member 2, and the damping block 76 may prevent the contact structure 75 from moving. The damping block 76 may be located on a side of the piezoelectric wafer 71 close to the conductive member 2, and the protective film 72 may be located on a side of the piezoelectric wafer 71 far from the damping block 76.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. A monitoring device for monitoring bolt pretension, comprising:
a housing having a cavity with an opening therein, said cavity having disposed therein: the device comprises a conductive piece, a power supply module, an acquisition module and a wireless transmission module;
one end of the conductive piece is used for being in contact connection with the piezoelectric sensing module, and the power supply module is electrically connected with the acquisition module and the wireless transmission module;
the other end of the conductive piece is connected with the acquisition module, and the acquisition module is used for acquiring the electric signal generated by the piezoelectric sensing module;
the wireless transmission module is connected with the acquisition module and used for transmitting the signals transmitted by the acquisition module.
2. The monitoring device of claim 1, further comprising:
the first magnetic ring is arranged in the cavity, and the outer side wall of the first magnetic ring is connected with the inner wall of the outer cover.
3. The monitoring device of claim 2, wherein the first magnetic ring is disposed adjacent an opening of the cavity.
4. The monitoring device of claim 1, wherein an exterior side wall of the housing is threaded.
5. The monitoring device of claim 2, further comprising:
the piezoelectric sensing module is positioned below the outer cover, and one end of the conductive piece is electrically connected with the piezoelectric sensing module.
6. The monitoring device of claim 5, wherein the piezoelectric sensing module comprises a piezoelectric wafer, and one end of the conductive member is electrically connected with the piezoelectric wafer; or
The piezoelectric sensing module comprises a piezoelectric wafer and a temperature sensor, and one end of the conductive piece is electrically connected with the piezoelectric wafer and the temperature sensor.
7. The monitoring device of claim 6, wherein the piezoelectric sensing module further comprises:
and the protective film is positioned on one side of the piezoelectric wafer far away from the conductive piece.
8. The monitoring device of claim 5, wherein the piezoelectric sensing module further comprises:
a housing connected to the enclosure, the housing having a chamber therethrough;
the piezoelectric sensing module and the second magnetic ring are arranged in the cavity, the outer side wall of the second magnetic ring is connected with the inner side wall of the shell, and the first magnetic ring and the second magnetic ring can be attracted magnetically.
9. The monitoring device of claim 8, wherein the piezoelectric sensing module further comprises:
the piezoelectric chip is connected with the contact structure, one end of the contact structure is connected with one end of the conductive piece, and the other end of the contact structure is electrically connected with the piezoelectric chip.
10. The monitoring device of claim 9, wherein the piezoelectric sensing module further comprises:
the damping block is positioned in the cavity and between the second magnetic ring and the contact structure, and the damping block is positioned on one side, close to the conductive piece, of the piezoelectric wafer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120655358.3U CN215984977U (en) | 2021-03-31 | 2021-03-31 | Monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120655358.3U CN215984977U (en) | 2021-03-31 | 2021-03-31 | Monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215984977U true CN215984977U (en) | 2022-03-08 |
Family
ID=80567846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120655358.3U Active CN215984977U (en) | 2021-03-31 | 2021-03-31 | Monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215984977U (en) |
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2021
- 2021-03-31 CN CN202120655358.3U patent/CN215984977U/en active Active
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Addressee: Lizhizhiyun (Beijing)|INTEL Corp. Document name: Notice of deemed failure to entrust an agency |
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