Optical fiber distributed belt conveyor state monitoring device

Abstract

The invention discloses an optical fiber distributed belt conveyor state monitoring device to realize maintainability of a system and improve maintenance efficiency. The optical fiber distributed belt conveyor state monitoring device comprises a conveying belt, a conveying unit and a monitoring assembly. The conveying unit is composed of a carrier roller, a carrier roller shaft and a supporting column. The conveyor belt is supported. The monitoring assemblies are arranged at the ends of the carrier roller shafts and comprise vibration optical fibers corresponding to the carrier roller shafts. The supporting column is located between the conveying belt and the monitoring assembly. The monitoring assembly can be independently disassembled and overhauled, a belt conveyor rack does not need to be disassembled, the problem that maintenance is difficult in the prior art is solved, and the overhauling efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of control transmission, and particularly relates to an optical fiber distributed belt conveyor status monitoring device. Background Art

[0002] With the continuous improvement of industrial automation level, belt conveyors, as important material conveying equipment, are widely used in industries such as mines, ports, and metallurgy. However, during the long-term operation of belt conveyors, key components such as idlers are prone to abnormal vibration or damage due to wear, eccentricity, or structural damage. If not detected and maintained in time, it may lead to equipment failures or even safety accidents.

[0003] In recent years, optical fiber sensing technology has shown good application prospects in the field of mechanical equipment status monitoring due to its advantages such as anti-electromagnetic interference, corrosion resistance, and distributed monitoring capabilities. Technologies such as fiber Bragg grating sensors and distributed vibration optical fibers have been tried for belt conveyor monitoring, but existing solutions still have problems. The monitoring components are installed in a fixed structure or inside the frame. During maintenance, the entire frame and adjacent components need to be disassembled, which not only complicates the operation but also easily affects the normal operation of other components of the system, resulting in low on-site maintenance and repair efficiency.

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an optical fiber distributed belt conveyor status monitoring device with an independently detachable structure. This device enables independent disassembly and repair without disassembling the belt conveyor frame, solves the problem of difficult maintenance in the prior art, and significantly improves the repair efficiency. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an optical fiber distributed belt conveyor status monitoring device with an independently detachable structure. This device enables independent disassembly and repair without disassembling the belt conveyor frame, solves the problem of difficult maintenance in the prior art, and significantly improves the repair efficiency.

[0006] The purpose of the present invention is achieved by adopting the following technical solutions:

[0007] An optical fiber distributed belt conveyor status monitoring device, comprising: a conveyor belt and a plurality of conveying units;

[0008] The conveyor belt is used for transporting materials;

[0009] The plurality of conveying units extend along the conveying direction of the conveyor belt; each conveying unit includes at least one idler, an idler shaft, and a support column; the idler contacts the conveyor belt to support the conveyor belt; the idler shaft belonging to the same conveying unit is coaxially connected to the idler; the idler shaft is movably connected to the support column and is supported by the support column;

[0010] The fiber-optic distributed belt conveyor status monitoring device further includes:

[0011] A plurality of monitoring components; the plurality of monitoring components are respectively arranged at the ends of the respective idler shafts, and the support columns are located between the conveyor belt and the monitoring components; the monitoring components include vibration optical fibers, and each of the vibration optical fibers is arranged corresponding to one of the idler shafts.

[0012] Furthermore, the monitoring component includes a monitoring housing, and the monitoring housing wraps the corresponding vibration optical fiber.

[0013] Furthermore, the monitoring housing further includes a dust-proof housing and a sliding arc-shaped end cover; the dust-proof housing extends along the axial direction of the idler shaft, and the sliding arc-shaped end cover is slidably connected to the dust-proof housing so as to be able to slide circumferentially along the dust-proof housing relative to the dust-proof housing, thereby opening or closing the interior of the monitoring housing.

[0014] Furthermore, the fiber-optic distributed belt conveyor status monitoring device further includes a frame, and the frame supports the conveyor belt and the support columns; the monitoring component further includes a fixed bracket, one end of the fixed bracket is fixedly connected to the frame, and the other end of the fixed bracket is connected to the monitoring housing to support the monitoring housing.

[0015] Furthermore, the vibration optical fiber is a fiber Bragg grating sensor.

[0016] Furthermore, the vibration optical fiber is a wireless transmission type optical fiber; the wireless transmission type optical fiber includes a vibration signal acquisition module and an optical fiber wireless transmission box; the vibration signal acquisition module is used to convert the vibration signal into an electrical signal; the optical fiber wireless transmission box is used to wirelessly transmit the electrical signal.

[0017] Furthermore, the monitoring component further includes a remote controller, and the remote controller is communicatively connected to the vibration optical fiber.

[0018] Furthermore, the remote controller includes an optical fiber wireless receiver and an alarm control module; the optical fiber wireless receiver is used to receive the signal of the optical fiber wireless transmission box; the alarm control module is used to analyze the vibration data and trigger an early warning.

[0019] Furthermore, the alarm control module includes a vibration anomaly analysis unit, a structural integrity analysis unit, and an optical fiber status analysis unit; the vibration anomaly analysis unit is used to analyze and identify wear or eccentricity faults of the idler connection structure; the structural integrity analysis unit is used to monitor mechanical damage of the conveying unit; the optical fiber status analysis unit is used to verify the loss or break of the vibration optical fiber.

[0020] Furthermore, the alarm control module further includes an audible and visual alarm.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Design of the side-mounted layout of the detection component: The monitoring component is arranged at the extended end of the idler shaft to form a compact side-mounted structure. Without disassembling the belt conveyor frame, the problem of difficult maintenance in the prior art is solved, and the maintenance efficiency is significantly improved; through the design of directly coupling the coaxial closely wound optical fiber with the shaft body, the signal attenuation caused by the lever effect is effectively suppressed, thereby enhancing the accuracy of the measured value; at the same time, the physical isolation effect of the support column significantly reduces the interference of material impact on the monitoring.

[0023] 2. Design of the dual maintainable structure: The first maintainable structure is a sliding arc-shaped end cover structure, and the core components inside the detection component can be repaired or replaced through the sliding end cover; the second maintainable structure is a detachable structure between the monitoring component and the idler shaft, and the detachable fixation is achieved with the idler shaft through a flange-type connecting piece. Both structures do not require disassembling the overall frame, and the detection component can be independently disassembled and repaired, significantly improving the maintenance efficiency.

[0024] 3. Design of the fixed bracket: The frame and the detection component are connected through three-point positioning flange connection in cooperation with anti-loosening bolts and an integrated quick-release locking device. While ensuring the convenience of disassembling the fixed bracket, it ensures that the vibration amplitude generated by the monitoring component under the vibration and impact of the belt conveyor is within a certain measurable range value, ensuring the reliability of the monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an optical fiber distributed belt conveyor condition monitoring device of the present invention;

[0026] Figure 2 is Figure 1 a schematic structural diagram of the transmission unit of an optical fiber distributed belt conveyor condition monitoring device shown;

[0027] Figure 3 is Figure 1 a schematic structural diagram of the monitoring component of an optical fiber distributed belt conveyor condition monitoring device shown.

[0028] In the figure: 1, conveyor belt; 2, transmission unit; 3, idler; 4, idler shaft; 5, support column; 6, monitoring component; 7, vibration optical fiber; 8, monitoring housing; 9, dust-proof housing; 10, sliding arc-shaped end cover; 11, frame; 12, fixed bracket; 13, vibration signal acquisition module; 14, optical fiber wireless transmission box. DETAILED DESCRIPTION OF THE INVENTION

[0029] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination can be formed among the following-described embodiments or technical features.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] See Figure 1 、 Figure 2 and Figure 3 , the specific implementation of a preferred embodiment of the present invention:

[0033] An optical fiber distributed belt conveyor status monitoring device includes a conveyor belt 1 (made of high-strength composite material, having excellent tensile and wear resistance) and a plurality of conveying units 2; the conveyor belt 1 is used for transporting materials; the plurality of conveying units 2 extend along the conveying direction of the conveyor belt 1; each conveying unit 2 includes at least one idler 3 (made of composite polymer roller, with a spiral reinforcing rib structure inside, and anti-slip grooves processed on the roller surface), an idler shaft 4 and a support column 5 (cast from high-strength alloy steel); the idler 3 is in contact with the conveyor belt 1 to support the conveyor belt 1; the idler shaft 4 belonging to the same conveying unit 2 is coaxially connected to the idler 3; the idler shaft 4 is movably connected to the support column 5 and is supported by the support column 5. The conveying units 2 are evenly distributed along the conveying direction, and each unit includes a support system composed of an idler 3, an idler shaft 4 and a support column 5: the idler 3 is connected to the support column 5 through precision bearings to achieve smooth rotation; the support column 5 is fixed to both sides of the frame 11 by a rigid structure and supports both sides of the idler shaft 4 through bearing assemblies. The above support structure is composed of a support column 5, an idler shaft 4 and an idler 3, ensuring the stable operation of the conveyor belt 1 under load conditions and effectively preventing the belt from sagging and running off track.

[0034] The fiber optic distributed belt conveyor status monitoring device further includes a plurality of monitoring components 6; the plurality of monitoring components 6 are respectively arranged at the ends of each idler shaft 4, and the support column 5 is located between the conveyor belt 1 and the monitoring component 6; that is, the conveying unit 2 is arranged along the material transportation direction, and the design structure of the conveying unit 2 is composed of the support column 5, the idler 3 and the idler shaft 4. The two support columns 5 are symmetrically arranged along the running direction of the conveyor belt 1 and serve as the main load-bearing structure of the system, forming a through layout of "support column 5 - idler shaft 4 - support column 5". The idler 3 is coaxially sleeved on the middle section of the idler shaft 4, directly supporting the conveyor belt 1, and the conveyor belt 1 covers directly above the idler 3 and extends parallel to the idler shaft 4. The monitoring component 6 is installed at the outer end of one side support column 5 (such as the right side of the belt conveyor) and extends strictly coaxially with the idler shaft 4; its position is completely independent of the working areas of the conveyor belt 1 and the idler 3 and is located on the outermost side of the sequence of "support column 5 - idler shaft 4, idler 3 and conveyor belt 1 - support column 5", forming a sorting design of support column 5 - conveyor belt 1 - support column 5 - monitoring component 6.

[0035] The monitoring component 6 includes a vibration optical fiber 7 (distributed optical fiber vibration sensing system), and each vibration optical fiber 7 is correspondingly arranged with one idler shaft 4. For the fiber optic distributed belt conveyor status monitoring device provided by the present invention, the core of the monitoring component 6 lies in innovatively adopting an external modular design and arranging it at the extended end of the idler shaft 4 outside the support column 5, forming an optimized layout with the idler shaft 4, the support column 5, and the monitoring component 6 arranged in sequence. The support column 5 is provided with clearance holes for placing the idler shaft 4 and its bearings. The idler shaft 4 is connected to the clearance holes of the support column 5 through precision bearings. The idler shaft 4 extends axially along the clearance holes for a certain distance as a monitoring interface. The monitoring component 6 is directly coupled to the idler shaft 4 through this interface. The vibration optical fiber 7 inside it is arranged in a coaxial and closely wound manner of 6 - 8 turns to ensure the maximum contact area between the optical fiber and the monitoring interface, directly contacting the monitoring interface of the idler shaft 4 and the installation position is less than 50 mm from the support column 5 at the closest distance, which not only ensures the measurement sensitivity, reduces the loss of vibration transmission, but also effectively suppresses the lever effect error.

[0036] During operation, when the conveyor belt 1 is transporting materials, due to factors such as uneven material distribution, mechanical friction, or external excitation, the conveyor belt 1 will generate dynamic vibrations. The vibrations of the conveyor belt 1 are transmitted to the idler shaft 4 through the idler 3 of the conveying unit 2. Based on the coaxial connection between the idler shaft 4 and the idler 3 (the idler 3 and the idler shaft 4 are rigidly connected coaxially to ensure the vibration transmission efficiency), and the idler shaft 4 is movably connected to and pivotally connected to the support column 5, so that while the idler shaft 4 bears the idler 3, it can sensitively respond to and transmit vibration signals. The support column 5 is located between the conveyor belt 1 and the monitoring assembly 6, that is, the monitoring assembly 6 is located on the other side of the support column 5 relative to the connection of the idler 3; when the idler shaft 4 vibrates, multiple turns of vibration optical fiber 7 precisely wound around its outer circumferential surface will deform accordingly. Based on the optical fiber sensing principle, parameters such as the vibration amplitude and frequency of the idler shaft 4 are detected in real time, and then the operating states of the idler 3 and the conveyor belt 1 are indirectly reflected. After the vibration signal is converted into an electrical signal by the optical fiber sensing unit, it is transmitted to the integrated optical fiber wireless transmitter box 14. This transmitter box is built-in with a signal conditioning circuit, which preprocesses the original signal and then sends it to the remote monitoring terminal. The wireless receiving module of the remote controller decodes the signal and reconstructs the vibration data. The alarm control module of the wireless receiving module of the remote controller adopts a multi-level analysis architecture and realizes intelligent diagnosis through the vibration anomaly analysis unit, the structural integrity analysis unit, and the optical fiber state analysis unit; different diagnostic results correspond to different alarm forms, such as a first-level warning (vibration offset situation), a second-level alarm (structural failure situation), and a third-level alarm (optical fiber structure damage situation). According to the above working principle, it is shown that the present invention arranges the monitoring assembly 6 at the extended end of the idler shaft 4 to form a compact side-mounted structure, without disassembling the belt conveyor frame 11, solves the problem of difficult maintenance in the prior art, and significantly improves the maintenance efficiency.

[0037] When the device is installed and debugged, the staff first precisely winds the vibration optical fiber 7 around the outer circumferential surface of the idler shaft 4 to ensure that the optical fiber is in close contact with the shaft surface. Subsequently, the integrated optical fiber wireless transmitter box 14 is fixed near the extended end of the idler shaft 4, and the optical fiber signal output end is connected to the input interface of the transmitter box. After power-on, the signal is calibrated through a handheld debugging device to ensure stable transmission of vibration data (amplitude, frequency). During daily monitoring, when the system is running, the optical fiber senses the vibration of the idler shaft 4 in real time, and the data is sent to the remote monitoring terminal through the wireless transmitter box. The staff observes the vibration parameter trend graph through the terminal interface. If abnormal fluctuations are found (such as a sudden increase in frequency or an amplitude exceeding the standard), combined with the abnormal time period automatically marked by the system, the fault type is initially judged (such as uneven material distribution or mechanical wear). In addition, it is also necessary to maintain and optimize the monitoring device. The optical fiber and the transmitter box are regularly cleaned through the maintenance structure to avoid dust interference; the alarm threshold is optimized using historical data to improve the diagnostic accuracy. The entire process does not require disassembling the frame 11, only requires side-mounted operation, and greatly shortens the maintenance time.

[0038] Preferably, a metal-rubber composite damping pad is installed at the connection interface between the detection component and the idler shaft 4, and a floating bolt connection is adopted. The damping pad is made by compound pressing of stainless steel wire mesh and fluororubber, and can effectively filter vibration noise in the range of 15 - 200 Hz.

[0039] Preferably, a conveyor belt 1 limiting device is provided at the upper end of the support column 5. This device adopts an adjustable bay window type baffle structure with a width of 3 cm - 5 cm, which can effectively restrict the vertical displacement range of the conveyor belt 1. Through this design, the bay window baffle can accurately guide the lifting movement of the conveyor belt 1 within the preset stroke, avoiding excessive deviation during the operation of the conveyor belt 1 and ensuring the stability of material transportation. The width of the limiting device is optimized to maintain a reliable limiting function during long-term use of the system.

[0040] In addition, the implementation method of the special monitoring component 6 for the multi-idler 3-group working condition is as follows: This component adopts an innovative three-channel independent monitoring architecture, and integrates three independent optical fiber winding units in the standard monitoring component 6. Each winding unit contains a precision-machined aluminum alloy wire winding disc, and realizes the automatic winding of 6 to 8 turns of optical fiber through the drive of a harmonic reduction motor. The winding tension is maintained within a certain range by a digital servo control system. During specific implementation, the extended ends of the three idler shafts 4 are respectively connected to the sensing couplers. The end face of the coupler is machined with an annular V-groove with a certain depth, and the optical fiber is fixed through a curing adhesive after winding. The operation process includes: using a special calibration fixture to accurately align the three wire winding discs with the idler shaft 4; setting the winding parameters of each channel through the touch screen; starting the automatic winding program, and the device sequentially completes the optical fiber layout of the three shafts; performing a frequency response test. The anti-winding version adopts a titanium alloy spiral guide rail, and multiple bearings are built into the guide rail, so that the optical fiber forms a uniform spiral distribution during axial winding. During operation, the initial phase angle of the guide rail needs to be adjusted first, and then the optical fiber is guided to gradually wind along the guide rail through a pneumatic auxiliary device. The entire process is monitored by an industrial camera in real time to ensure that the error of the spacing between each turn is controlled within 0.2 mm. These two schemes can complete the installation or replacement of the core components inside the monitoring component 6 in a short time.

[0041] The monitoring component 6 designed in the present invention can adopt a double-maintainable structure, that is, the monitoring component 6 is provided with a monitoring housing 8, and the monitoring housing 8 is detachably arranged on the idler shaft 4. The monitoring housing 8 itself includes a housing and an end cover, and the housing and the end cover can move relative to each other to realize the manual opening and closing of the inside of the monitoring component 6. When the service life of the equipment reaches the designed life or is damaged, the maintenance personnel can select two efficient maintenance solutions according to the actual situation: for routine maintenance, only the internal maintenance can be completed by the quick-opening end cover device on the monitoring component 6. The end cover is a sliding opening and closing mechanism or a four-bar hinge mechanism, which supports large-angle opening and closing, and is combined with an easy-grabbing structure (such as a flange bolt rigid connection structure, a clamp-type rigid connection structure, a pin positioning connection structure, and an angle steel bracket connection structure) to realize single-handed operation, so that the inspection or replacement of the core components such as the vibration optical fiber 7 and the optical fiber wireless transmission box 14 inside the detection component can be completed in a short time; for in-depth maintenance, the original modular quick device allows the entire monitoring component 6 to be disassembled separately, and only two anti-dropping bolts need to be loosened. The whole process does not affect the operation of adjacent components. This hierarchical maintenance design reduces the maintenance cost of the whole life cycle of the equipment. Importantly, neither of the two maintenance methods requires the disassembly of the frame 11 or the interruption of the belt conveyor operation. This device can be independently disassembled and maintained without disassembling the whole frame 11, solving the problem of difficult maintenance in the prior art and significantly improving the maintenance efficiency.

[0042] The monitoring component 6 includes a monitoring housing 8 (the shape of the housing can be cylindrical, rectangular, etc.), and the monitoring housing 8 wraps the corresponding vibration optical fiber 7. The monitoring housing 8 is detachably fixed to the idler shaft 4 through a flange-type connecting piece. It is detachably fixed to the idler shaft 4 through a flange-type connecting piece. A fluororubber sealing skirt can be adopted at the rotating shaft inside the housing, and a silica gel sealing ring can be configured at the joint surface, which can effectively resist the impact of materials and the intrusion of dust, and at the same time realize quick disassembly and assembly for maintenance.

[0043] The monitoring housing 8 further includes a dust-proof housing 9 and a sliding arc-shaped end cover 10 (in addition to the sliding opening method, it can also be a quick-release buckle type, magnetic attraction sealing type, or slide rail push-pull type opening method); the dust-proof housing 9 is arranged to extend along the axial direction of the idler shaft 4, and the sliding arc-shaped end cover 10 is slidably connected to the dust-proof housing 9 so as to be able to slide circumferentially along the dust-proof housing 9 relative to the dust-proof housing 9, thereby opening or closing the interior of the monitoring housing 8. In the present invention, the sliding arc-shaped end cover 10 of the monitoring housing 8 adopts a composite guiding mechanism of a double-rail limiting system to achieve reliable opening and closing; that is, precision T-shaped grooves are machined on both sides of the dust-proof housing 9, and the convex blocks on the sliding arc-shaped end cover 10 are used for limiting sliding, and buffer limiting blocks are arranged at the ends of the guide rails to avoid excessive impact during opening. The dust-proof housing 9 is made of high-strength aluminum alloy material and forms a sealed cavity along the axial direction of the idler shaft 4. Its core function is that the monitoring housing 8 is composed of the dust-proof housing 9 and the multi-functional end cover, and the components inside the monitoring housing 8 can be directly replaced or repaired by opening or closing the sliding arc-shaped end cover 10 without disassembling the overall frame 11, solving the problem of difficult maintenance in the prior art.

[0044] The optical fiber distributed belt conveyor state monitoring device also includes a frame 11, which supports the conveyor belt 1 and the support column 5; the monitoring component 6 also includes a fixed bracket 12, one end of which is fixedly connected to the frame 11, and the other end of the fixed bracket 12 is connected to the monitoring housing 8 to support the monitoring housing 8. The fixed bracket 12 is made of high-strength stainless steel, and a quick connection with the frame 11 is achieved through a three-point positioning structure. The frame 11 side adopts a standard flange interface, and a rigid fixation is achieved with anti-loosening bolts; the middle section (i.e., the section where the fixed bracket 12 is connected to the monitoring component 6) is integrated with a quick-release locking device, and a real tool-free disassembly is achieved through the synergistic effect of a press-type spring lock tongue and a rotating buckle. The fixed bracket 12 adopts a 2mm thick sheet metal structure design, and a 2mm thick reinforcement rib is added between the two key stress-bearing surfaces in the middle for rigid connection, which significantly improves the stability and bearing capacity of the overall structure. The reasonable layout of the reinforcement ribs effectively disperses the stress concentration, suppresses the deformation tendency of the sheet metal when subjected to stress, and enables the bracket to maintain geometric accuracy under vibration or impact loads. This enhanced design achieves a targeted improvement in structural rigidity, which not only ensures the stability of monitoring data, but also effectively improves maintenance efficiency and significantly improves maintenance efficiency. Specific operation method: The maintenance personnel first use a wrench or tool to remove the anti-loosening bolts on the side flange interface of the rack 11 to release the fastening connection between the bracket and the rack 11. Then, operate the rotating buckle structure of the middle section to release the quick-release locking device to release the locking state between the bracket and the arm of the rack 11. After completing the above steps, the maintenance personnel lift the fixed bracket 12 upward as a whole to separate it from the fitting surface with the arm of the rack 11, and finally move it out smoothly in the horizontal direction to complete the disassembly of the bracket. The operation process is reasonably designed to facilitate quick disassembly and assembly, while ensuring that the bracket remains stable during the disassembly process to avoid accidental falling off or damage.

[0045] Preferably, the vibrating optical fiber 7 is a fiber Bragg grating sensor. The fiber Bragg grating sensor uses the wavelength shift principle to achieve high-precision vibration measurement by writing a grating structure inside the optical fiber. The core function of using this sensor is that it is completely resistant to electromagnetic interference and corrosion, and supports distributed multi-point synchronous monitoring to obtain more accurate monitoring data.

[0046] The vibration optical fiber 7 is a wireless transmission optical fiber; the wireless transmission optical fiber includes a vibration signal acquisition module 13 and an optical fiber wireless transmitting box 14; the vibration signal acquisition module 13 is used to convert the vibration signal into an electrical signal; the optical fiber wireless transmitting box 14 is used to wirelessly transmit the electrical signal. The entire system uses a protective metal casing, with a built-in replaceable battery and energy collection module, to achieve wiring-free installation and remote monitoring, and is suitable for long-distance belt conveyor monitoring scenarios.

[0047] The monitoring component 6 further includes a remote controller, which is communicatively connected to the vibrating optical fiber 7. By using precise time synchronization technology to coordinate data at multiple monitoring points and combining an adaptive sampling strategy, the accuracy of system fault identification is improved, the data transmission volume is optimized, and efficient and reliable remote monitoring is achieved.

[0048] The remote controller includes an optical fiber wireless receiver and an alarm control module; the optical fiber wireless receiver is used to receive the signal of the optical fiber wireless transmitter box 14; the alarm control module is used to analyze the vibration data and trigger a warning. This design realizes the fully automated processing from signal reception to alarm triggering.

[0049] The alarm control module includes a vibration anomaly analysis unit, a structural integrity analysis unit, and an optical fiber status analysis unit; the vibration anomaly analysis unit is used to analyze and identify wear or eccentricity faults in the connection structure of the idler 3; the structural integrity analysis unit is used to monitor mechanical damage to the conveying unit 2; the optical fiber status analysis unit is used to check for losses or breakpoints in the vibrating optical fiber 7. Through synchronization technology, the fusion analysis of multi-dimensional data is realized, and the system generates a comprehensive evaluation report including vibration level, structural health index, and optical fiber reliability within a short time and uploads it to the system, forming a closed-loop management from real-time monitoring to predictive maintenance. The overall fault identification rate is effectively improved, and the false alarm rate is reduced.

[0050] The alarm control module also includes an audible and visual alarm. The audible and visual alarm in the present invention adopts an intelligent grading alarm mechanism to achieve precise fault notification through dual audible and visual warnings. In terms of optical alarm, a high-brightness RGB three-color LED array is used, and the operation status of the device is indicated by three states: green light is always on during normal operation; when it is detected that the idler 3 or the idler shaft 4 is offset, it automatically switches to slow flashing yellow for warning; if a serious fault such as structural damage or detachment occurs, it immediately turns to fast flashing red for alarm. In terms of audible alarm, it remains silent during normal operation; a discontinuous whistle of 80 dB is emitted during offset warning; a sharp siren of 105 dB is triggered during serious faults, and the specific fault location is accompanied by voice broadcast. The alarm adopts a modular design to ensure that on-site personnel can quickly and accurately identify abnormal device status.

[0051] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0053] As described above, the above are only specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily conceive of various changes or substitutions, and these should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. An optical fiber distributed belt conveyor state monitoring device, comprising a conveyor belt (1) and a plurality of conveyor units (2); The conveyor belt (1) is used to transport materials; A plurality of the conveying units (2) extend along the conveying direction of the conveyor belt (1); each of the conveying units (2) comprises at least one roller (3), a roller shaft (4) and a support column (5); the roller (3) contacts the conveyor belt (1) to support the conveyor belt (1); the roller shaft (4) belonging to the same conveying unit (2) is coaxially connected to the roller (3); the roller shaft (4) is movably connected to the support column (5) and supported by the support column (5); It is characterized in that The optical fiber distributed belt conveyor state monitoring device also includes: A plurality of monitoring components (6); the plurality of monitoring components (6) are respectively arranged at the end of each of the roller shafts (4), and the support column (5) is located between the conveyor belt (1) and the monitoring components (6); the monitoring components (6) include a vibration optical fiber (7), and each of the vibration optical fibers (7) is arranged corresponding to one of the roller shafts (4).

2. The optical fiber distributed belt conveyor state monitoring device according to claim 1, characterized in that: The monitoring component (6) comprises a monitoring housing (8), and the monitoring housing (8) is wrapped around the corresponding vibration optical fiber (7).

3. The optical fiber distributed belt conveyor state monitoring device according to claim 2, characterized in that: The monitoring housing (8) also includes a dustproof shell (9) and a sliding arc-shaped end cover (10); the dustproof shell (9) is extended along the axial direction of the roller shaft (4), and the sliding arc-shaped end cover (10) is slidably connected to the dustproof shell (9) so as to be able to slide relative to the dustproof shell (9) along the circumference of the dustproof shell (9), thereby opening or closing the interior of the monitoring housing (8).

4. The optical fiber distributed belt conveyor state monitoring device according to claim 2, characterized in that: The optical fiber distributed belt conveyor state monitoring device also includes a frame (11), and the frame (11) supports the conveyor belt (1) and the support column (5); the monitoring component (6) also includes a fixed bracket (12), one end of the fixed bracket (12) is fixedly connected to the frame (11), and the other end of the fixed bracket (12) is connected to the monitoring housing (8) to support the monitoring housing (8).

5. The optical fiber distributed belt conveyor state monitoring device according to claim 2, characterized in that: The vibrating optical fiber (7) is a fiber Bragg grating sensor.

6. The optical fiber distributed belt conveyor state monitoring device according to claim 5, characterized in that: The vibration optical fiber (7) is a wireless transmission optical fiber; the wireless transmission optical fiber comprises a vibration signal acquisition module (13) and an optical fiber wireless transmission box (14); the vibration signal acquisition module (13) is used to convert the vibration signal into an electrical signal; the optical fiber wireless transmission box (14) is used to wirelessly transmit the electrical signal.

7. The optical fiber distributed belt conveyor state monitoring device according to claim 6, characterized in that: The monitoring component (6) further comprises a remote controller, which is communicatively connected to the vibration optical fiber (7).

8. The optical fiber distributed belt conveyor state monitoring device according to claim 7, characterized in that: The remote controller comprises an optical fiber wireless receiver and an alarm control module; the optical fiber wireless receiver is used to receive signals from the optical fiber wireless transmitting box (14); and the alarm control module is used to analyze vibration data and trigger an early warning.

9. The optical fiber distributed belt conveyor state monitoring device according to claim 8, characterized in that: The alarm control module comprises a vibration anomaly analysis unit, a structural integrity analysis unit and an optical fiber status analysis unit; the vibration anomaly analysis unit is used to analyze and identify wear or eccentricity faults of the roller (3) connection structure; the structural integrity analysis unit is used to monitor mechanical damage to the transmission unit (2); and the optical fiber status analysis unit is used to verify the loss or breakpoint of the vibration optical fiber (7).

10. The optical fiber distributed belt conveyor state monitoring device according to claim 9, characterized in that: The alarm control module also includes an audible and visual alarm.

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