CN219416678U - Bolt looseness state monitoring device - Google Patents

Abstract

The utility model discloses a bolt loosening state monitoring device, which relates to the technical field of wireless radio frequency identification, and particularly relates to a bolt loosening state monitoring device. This bolt looseness state monitoring devices installs outer gasket module on track gasket to install interior bolt module on the bolt, when the bolt appears becoming flexible, drive interior bolt module and take place the displacement, interior bolt module rotates under the torsion effect, leads to inside gomphosis's port antenna to take place to break, uses professional equipment to gather state information, can judge that the state of label is closed or disconnection, judges whether the bolt appears becoming flexible.

Description

Bolt looseness state monitoring device

Technical Field

The utility model relates to the technical field of wireless radio frequency identification, in particular to a bolt loosening state monitoring device.

Background

RFID wireless radio frequency identification is a non-contact wireless transmission automatic identification technology, and is widely applied to various industries such as logistics, aviation, automobiles, cold chains, medical treatment and the like. The sensor technology can sense the surrounding environment or special substances and convert the sensing environment or special substances into useful output signals according to a certain rule. The sensors are of various kinds and the principle is different. The device comprises a temperature sensor, a gravity sensor and an ultrasonic sensor; most are active products. The wireless radio frequency identification technology and the sensor technology are combined with each other and are widely applied to the field of the Internet of things. By utilizing mutual integration of the electronic tag and the sensing system, different electronic tags and sensor systems can be selected for different industries and different purposes. In practice, most of the sensors are active products, and can only be matched with 2.4G active electronic tags or UWB technical schemes, so that the application prospect is limited. The UHF passive sensor tag which is popular in the market mainly focuses on the application scene of temperature and humidity types, and can work normally only in the scene that a reader-writer continuously sends signals. The passive sensor tag cannot monitor and record the current temperature or humidity state in the environment without a power supply or radio frequency signals, so that the passive sensor tag has certain limitation.

The bolt connection is used as an important fastener connection mode and is widely applied to industries such as rail transit, railway bridges, engineering machinery, automobile manufacturing, aerospace, wind power nuclear power, ship manufacturing and the like, the fastening state of the bolt connection is directly related to the safety and reliability of engineering facilities and instruments and equipment, and if the bolt connection is loosened and falls off due to insufficient vibration, impact, pretightening force and the like, serious safety accidents and huge economic losses are caused.

Patent number CN113804347a discloses a bolt loosening monitoring device, system and method, wherein, the RFID reader can obtain the information of the electronic tag to determine whether the bolt is loosened, and the data management system records the information of the read-write electronic tag, after all road sections are detected, the data management system compares the recorded information of all electronic tags with a database in the data management system to determine whether the bolt is loosened, and can accurately position the bolt which is loosened according to the data comparison. However, whether the bolt is loosened or not can be judged by the RFID reader-writer through acquiring the information of the electronic tag or not, and only whether the bolt is loosened or not can be detected, and under the use environment of the state of the bolt to be detected, the condition of asset checking or inspection and card punching confirmation cannot be carried out, namely the lost state cannot be confirmed, and whether an maintainer has inspected or not cannot be confirmed, so that the bolt loosening state monitoring device is provided for solving the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a bolt loosening state monitoring device, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: bolt looseness state monitoring devices, which comprises an outer shell, the shell comprises outer gasket module and interior bolt module, interior bolt module nestification is in the inside of outer gasket module, the top of interior bolt module is provided with the base plate, and is provided with chip and antenna on the base plate, the location breach has all been seted up at the both ends at outer gasket module top, set up on the interior bolt module with location breach complex location arch, antenna part extends to the bellied inside of location.

Preferably, the antenna is attached to the substrate, etched copper is used, and the antenna is composed of array antennas with mirror symmetry on both sides.

Preferably, the chip is directly bound to the substrate by using a wire bonding packaging technology.

Preferably, the top of the inner bolt module is provided with an installation clamping groove matched with the substrate, the chip and the antenna, and the substrate, the chip and the antenna are packaged by plastic packaging glue after being installed on the installation clamping groove.

Preferably, two ends of the chip are welded at the connection port of the antenna, and the chip and the antenna can form a loop system.

Preferably, the positioning protrusion on the inner bolt module can be embedded into any positioning notch on the outer gasket module after the outer gasket module is embedded with the inner bolt module.

The utility model provides a bolt loosening state monitoring device, which has the following beneficial effects:

1. this bolt looseness state monitoring devices installs outer gasket module on track gasket to install interior bolt module on the bolt, when the bolt appears becoming flexible, drive interior bolt module and take place the displacement, interior bolt module rotates under the torsion effect, leads to inside chimeric port antenna to take place to break, uses professional equipment to gather state information, can judge that the state of label is closed or disconnection, judges whether the bolt appears not hard up, indicates that the device is lost when not gathering the information simultaneously, has multiple detection state, and this product has unique identification code, can carry out the asset inventory, prevents to lose.

2. This bolt looseness state monitoring devices through the cooperation of location breach and bellied, has certain mechanical strength, can protect to a certain extent and prevent that the bolt is not hard up, and electronic sensor uses injection molding simultaneously, can soak, be salt and alkali resistant, work under wide temperature environment, can be according to user's demand real-time storage encryption or non-secret data simultaneously, is convenient for follow-up the looking over.

Drawings

FIG. 1 is a schematic diagram of the overall assembled structure of the present utility model;

FIG. 2 is a schematic view of the overall top view of the present utility model;

FIG. 3 is a schematic view of the overall cross-section of the present utility model;

fig. 4 is a schematic structural diagram of an antenna according to the present utility model;

FIG. 5 is a schematic view of the outer gasket module of the present utility model;

fig. 6 is a schematic structural view of the inner bolt module of the present utility model.

In the figure: 100. a chip; 200. a housing; 210. an outer gasket module; 211. positioning the notch; 220. an inner bolt module; 221. positioning the bulge; 222. installing a clamping groove; 300. an antenna; 310. a substrate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1, 2 and 3, the present utility model provides the following technical solutions: the bolt looseness state monitoring device comprises a shell 200, the shell 200 is composed of an outer gasket module 210 and an inner bolt module 220, the inner bolt module 220 is nested in the outer gasket module 210, a threaded hole is formed in the bottom of the inner bolt module 220, the installation direction is adjusted according to an adaptive bolt during installation, the installation direction is adapted to the installation direction of the bolt, the inner bolt module 220 can be driven to rotate when the bolt loosens, meanwhile, the threaded hole can be formed in the inner bolt module 220 no longer, the inner bolt module 220 is glued at the end of the bolt, a substrate 310 is arranged at the top end of the inner bolt module 220, a 2mm thick FR4 plate is adopted as the substrate, the diameter is 28mm, the longest length is 41.5mm, a chip 100 and an antenna 300 are arranged on the substrate 310, positioning notch 211 is formed in two ends of the top of the outer gasket module 210, positioning protrusions 221 matched with the positioning notch 211 are formed in the inner bolt module 220, a certain mechanical strength is achieved through the mutual matching of the positioning notch 211, the bolt can be protected and prevented from loosening to a certain extent, the antenna 300 extends to the inside of the positioning protrusions 221, when the bolt loosens, the bolt drives the inner bolt module 220 to rotate, the inner bolt module to rotate, the torsion is caused by the bolt, the inner bolt 220 under the action of the bolt or the special rotation port is broken, and the state of the antenna can be judged to be in a closed state or a state is judged if the special state is broken.

Referring to fig. 2 and 4, the antenna 300 is attached to the substrate 310, etched copper is adopted, the antenna 300 is composed of array antennas with mirror symmetry on both sides, the antenna 300 is made of a high-speed PCB material plate for receiving and transmitting 840MHz-960MHz signals, the effective actual reading distance is 3m, the electric performance is greatly improved in high temperature and impact resistance compared with the traditional plate, the chip 100 is directly bound to the substrate 310 by using a wire bonding packaging technology, the chip 100 is made of an EM4325 chip, the chip 100 and the antenna 300 are packaged by wire bonding, and work is performed within the range of-45 ℃ to 85 ℃,

when the two ends of the detection port are in the initial state of the tag when being closed, the initial state can be obtained by reading the formulated address content through the UHF reader-writer, when the detection port is disconnected, the content of the appointed position is changed, the disconnection of the detection port designed by the tag cannot be recovered, and the counterfeiting and false triggering can be prevented;

in a closed state, the built-in antenna of the port is not broken, and when the original state is maintained, the array is in an optimal state of electrical length;

when the port antenna is in a jogged state with the mechanical shell in a closed state, mechanical torsion is not formed when the maximum bearing strength of the product is not exceeded, so that the shell is not deformed;

in the disconnected state, when the port built-in antenna breaks due to deformation of the mechanical shell, the array is in the worst electric length state;

in the disconnected state, the mechanical shell deforms under the torsion action of the bolt, so that the port antenna embedded in the mechanical shell is broken, and the disconnected state cannot be changed.

The two ends of the chip 100 are welded at the connection port of the antenna 300, and the chip 100 and the antenna 300 can form a loop system for conducting data of radio frequency signals.

Referring to fig. 2 and 3, an installation slot 222 is formed in the top of the inner bolt module 220 and is matched with the substrate 310, the chip 100 and the antenna 300, the substrate 310, the chip 100 and the antenna 300 are installed in the installation slot 222 and then encapsulated by plastic packaging glue, the inner bolt module can be kept from falling easily when the chip 100 and the antenna 300 are installed and is protected, meanwhile, in operation, the injection molding plastic can play a good impact buffering role, the direct impact force of the bolt on the tag is relieved, and the survival characteristic of the tag is improved.

Referring to fig. 2, 5 and 6, after the outer gasket module 210 is embedded with the inner bolt module 220, the positioning protrusion 221 on the inner bolt module 220 can be embedded into any positioning notch 211 on the outer gasket module 210, and the outer gasket module 210 and the inner bolt module 220 use a mold opening injection molding mode and are matched through the positioning notch 211 and the positioning protrusion 221, so that the two modules can be integrated through fitting and assembly;

the material of the shell 200 is preferably a degradable material PPC, has good flexibility and good degradation performance and barrier performance.

In summary, the bolt loosening status monitoring device, when in use, the antenna 300 is attached to the substrate 310 by etching copper, the chip 100 is bound to the substrate 310 by adopting the wire binding packaging technology, the substrate 310 is integrally installed inside the installation clamping groove 222, and is subjected to plastic packaging by using plastic packaging glue, the inner bolt module 220 is installed at the end part of the bolt to be detected, the inner bolt module 220 can be connected through the threaded hole inside the inner bolt module 220, the installation direction is adjusted according to the matched bolt, the installation direction of the bolt is adapted, the outer gasket module 210 is clamped outside the inner bolt module 220, the positioning protrusion 221 is clamped in any positioning notch 211 at two ends of the outer gasket module 210, the assembly of the device is completed, the outer gasket module 210 is fixed on bolt installation equipment, for example, when the track bolt is detected, the outer gasket module 210 is fixed on the track gasket matched with the bolt, when an operator collects state information by using special equipment, the equipment sends a signal to the device, an antenna 300 on the device receives the signal and feeds back the opened or closed signal to a chip 100, the signal is reversely radiated to the collecting equipment in a radio wave mode through the antenna 300, in the whole state information collection process, the sensing device works in a passive environment, the energy of the signal received and transmitted by the device is obtained from the signal transmitted by the inquiring equipment and is converted into the working energy of the device, thus the information collection is completed, when the received signal is closed, the condition that the bolt is not loosened is indicated, when the bolt is loosened, the bolt drives an inner bolt module 220 to displace, the inner bolt module 220 rotates under the action of torsion, the internal embedded port antenna is broken, the received signal is disconnected at the moment, the surface bolt is loosened, and when a signal is not received, the device is indicated to be lost, and the state of the bolt and the body of the device are monitored.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. Bolt looseness state monitoring devices, including shell (200), its characterized in that: the shell (200) comprises outer gasket module (210) and interior bolt module (220), interior bolt module (220) nest in the inside of outer gasket module (210), the top of interior bolt module (220) is provided with base plate (310), and is provided with chip (100) and antenna (300) on base plate (310), location breach (211) have all been seted up at the both ends at outer gasket module (210) top, set up on interior bolt module (220) with location breach (211) complex location arch (221), antenna (300) part extends to the inside of location arch (221).

2. The bolt loosening status monitoring device according to claim 1, wherein: the antenna (300) is attached to the substrate (310) and etched copper is used, and the antenna (300) is composed of array antennas with mirror symmetry on both sides.

3. The bolt loosening status monitoring device according to claim 2, wherein: the chip (100) is directly bound to the substrate (310) using wire bonding encapsulation techniques.

4. A bolt loosening status monitoring device as claimed in claim 3, wherein: the top of interior bolt module (220) has seted up and has installed draw-in groove (222) with base plate (310), chip (100), antenna (300) mutually supporting, base plate (310), chip (100), antenna (300) use plastic envelope to glue after installing on installation draw-in groove (222) and encapsulate.

5. The bolt loosening status monitoring device of claim 4, wherein: the two ends of the chip (100) are welded at the connecting port of the antenna (300), and the chip (100) and the antenna (300) can form a loop system.

6. The bolt loosening status monitoring device according to claim 1, wherein: the positioning protrusions (221) on the inner bolt module (220) can be embedded into any positioning notch (211) on the outer gasket module (210) after the outer gasket module (210) is embedded with the inner bolt module (220).