Self-cleaning monitoring device, linear tandem type online monitoring system and linear equipment

Abstract

The invention relates to a self-cleaning monitoring device, a linear tandem type online monitoring system and linear equipment. The self-cleaning monitoring device comprises a main body; at least one noise recording device mounted on the main body; and the cleaning mechanism is used for cleaning the noise recording device through gas purging. The invention also discloses a linear tandem type on-line monitoring system and linear equipment.

Description

Technical Field

[0001] The present invention relates to the field of conveyor equipment monitoring, in particular to the monitoring field of linear equipment with fixed paths, such as belt conveyor equipment in factories, restaurants, coal mines, docks, etc. More specifically, the present invention relates to a self-cleaning monitoring device, a linear series on-line monitoring system, and a linear equipment. Background Art

[0002] In the field of linear equipment monitoring such as conveyor equipment, especially in the monitoring technology of belt conveyor equipment with fixed paths in factories, restaurants, coal mines, docks, etc., generally, belt conveyor equipment such as belt conveyors is used to transport goods, loads, etc. Such equipment has many advantages such as long transportation distance, large transportation volume, stable and fast transportation, long working hours, and little or only a small amount of manual intervention during transportation, which can greatly improve the transportation efficiency and reduce labor costs and labor intensity.

[0003] Generally, since belt conveyor equipment needs to bear and transport a certain amount of load, during its operation, especially after long-term work, it will inevitably face various problems such as the reliability, wear, and faults of the belt conveyor equipment and its components. In particular, for example, vulnerable and consumable parts of belt conveyor equipment such as belts, conveyor belts, rollers, etc., are prone to various fault problems such as wear, abrasion, jamming, etc. after long-term work and / or load operation, which affect the work continuity, safety, stability, and reliability of the belt conveyor equipment. Therefore, it is necessary to monitor its operation process.

[0004] CN116119289A discloses an intelligent robot inspection system based on coal belt transportation, which relates to the field of intelligent robot systems; it is used to solve the problem that existing intelligent robots cannot detect and feedback on a belt conveyor with abnormal conditions, affecting the coal transportation work of the belt; it includes a data acquisition module, a database, a server, and a data execution module. The present invention dynamically monitors various information during the operation of the belt through an inspection robot, analyzes and processes various operation information during operation, and feeds back to the data execution module according to the obtained results, so that different solution plans can be executed according to the feedback results. Through the adjustment of the equipment itself and the handling of management personnel, different abnormal states can be targeted, thereby realizing the timely feedback of the inspection robot on abnormal situations and the adjustment of parameters. CN116119289A mainly relates to the data acquisition, analysis, and control technologies of intelligent inspection robots.

[0005] CN115285621A relates to the field of fault monitoring technology, and specifically discloses an intelligent belt idler fault monitoring system based on artificial intelligence, including: an audio monitoring subsystem, which is used to collect noise from a belt conveyor to obtain noise signal data, and process and analyze the noise signal data to determine whether there is an abnormal operation; a video monitoring subsystem, which is used to take videos and perform infrared monitoring on the belt idlers of the belt conveyor when there is an abnormal operation, generate shooting and monitoring data, and perform fault location analysis on the shooting and monitoring data to locate specific faulty idlers. By using audio monitoring to judge whether there is an abnormality in the belt idlers and using video monitoring to locate specific faulty idlers, it is possible to monitor the faults of the belt idlers by combining video and audio, effectively improving the detection accuracy rate, reducing the labor cost, and enhancing the safety. CN115285621A relates to the analysis, judgment, and monitoring technology of signals / data based on artificial intelligence.

[0006] CN111498425B discloses a circulating detection system for a wire rope traction type underground belt conveyor in coal mines, which includes: an aerial ropeway system, a rope gripper, belt conveyor condition monitoring equipment, and a monitoring background system. This circulating detection system for a wire rope traction type underground belt conveyor in coal mines is powered by the power grid to drive the operation of the aerial ropeway system, enabling the belt conveyor condition monitoring equipment thereon to smoothly patrol above the conveyor belt of the belt conveyor. The built-in battery of the belt conveyor condition monitoring equipment itself is only used to provide electrical energy for the sensing and communication equipment, thereby extending the battery usage duration. Each belt conveyor condition monitoring equipment serves as a base station for each other and can accurately locate the patrol site in real time through the wireless radio frequency module installed on the conveyor belt and upload various data information, so as to accurately judge the positions where the belt conveyor has problems such as slipping, deviation, coal accumulation, belt breakage, fire, or idler faults. The patrol robot of the present invention can perform autonomous patrol and real-time communication, and perform intelligent fault diagnosis on the belt conveyor during the patrol process. CN111498425B mentions that by setting up special hardware such as an aerial ropeway system, a rope gripper, belt conveyor condition monitoring equipment, and a monitoring background system, etc., the belt conveyor condition monitoring equipment on the aerial ropeway system can smoothly patrol above the conveyor belt of the belt conveyor to achieve its monitoring purpose. However, its disadvantages are also obvious. The specially set up various hardware devices and systems, namely the aerial ropeway system, the rope gripper, the belt conveyor condition monitoring equipment, and the monitoring background system, have extremely high costs and complex structures, which are not conducive to large-scale and wider field promotion and application. Moreover, its belt conveyor condition monitoring equipment is for patrol, that is, it is mobile, rather than stationary.

[0007] There is a continuous need in the industry for monitoring devices for linear devices, such as belt conveyor devices, that can provide lower costs, higher reliability and stability, better maintenance-free performance, longer working hours and service life, and greater industrial practicability, for real-time monitoring of belt conveyor devices, improving their working continuity, safety, stability and reliability, as well as other performance characteristics, and as far as possible reducing or even eliminating the defects of the above-mentioned prior art, and achieving other more technical advantages.

[0008] The information included in this background art section of the present invention specification, including any references cited herein and any descriptions or discussions thereof, is included only for the purpose of technical reference and is not considered to be the subject matter limiting the scope of the present invention. Summary of the Invention

[0009] The present invention is proposed in view of the above and other more concepts.

[0010] One of the basic concepts of the present invention is to provide a self-cleaning monitoring device, the self-cleaning monitoring device comprising: a main body; at least one noise recording device mounted on the main body; and a cleaning mechanism for cleaning the noise recording device by gas purging. In the present invention, the main purpose of gas purging is to remove dust, debris and moisture (if any) on various monitoring components, noise recording devices, various sensors, infrared sensors such as infrared thermometers, infrared thermal imagers, and cameras (lenses) in the monitoring device, so that these sensor devices are always clean and in a stable working state, to maintain the reliability and stability of their performance indicators, and to ensure the authenticity and effectiveness of data monitoring / sensing and input.

[0011] According to one embodiment, the cleaning mechanism comprises an air inlet passage provided outside the main body, a purging air passage communicated with the air inlet passage and located inside the main body, and a purging gas outlet communicated with the purging air passage, wherein the purging gas outlet is configured and positioned to facilitate purging and cleaning of the corresponding noise recording device.

[0012] According to one embodiment, the monitoring device is a set of multiple monitoring devices arranged along the extension path of the linear device, wherein the air inlet passages of the monitoring devices are connected to a common compressed gas pipeline through respective compressed air branch pipelines, and the common compressed gas pipeline is arranged along the extension path of the linear device and connected to a compressed gas supply source.

[0013] According to one embodiment, the set of multiple monitoring devices constitutes a sensor chain, which is a part of the sensor chain of a linear series online monitoring system and can be operated and controlled by the linear series online monitoring system.

[0014] According to one embodiment, the monitoring device is an audio monitoring device, particularly a noise monitoring device.

[0015] According to one embodiment, the intake passage is an intake pipe connected to or integrally formed with the main body, one end of which is connected to an external compressed gas supply source.

[0016] According to one embodiment, noise recording devices are provided on each side of the left and right sides of the main body.

[0017] According to one embodiment, on each side of the left and right sides of the main body, two noise recording devices are provided one above the other.

[0018] According to one embodiment, the monitoring device is in the overall shape of a square block, a square block with chamfered corners, a drum-shaped block, a hexagonal block, or a symmetric block formed by mirror-joining two identical isosceles trapezoids at the bottom.

[0019] According to one embodiment, the central axis of the mounting hole of each noise recording device forms an angle with respect to the vertical direction, and the angle is in the range greater than 0 degrees and less than or equal to 45 degrees.

[0020] According to one embodiment, the monitoring device is mounted on or near a linear device and cannot pivot about an axis.

[0021] According to one embodiment, at least one noise recording device is provided on one side of the main body.

[0022] According to one embodiment, the monitoring device can pivot about an axis and further includes a drive motor for driving the monitoring device to pivot about an axis between a starting position and a terminating position.

[0023] According to one embodiment, the at least one noise recording device includes two noise recording devices provided on one side of the main body of the monitoring device, wherein the central axes of the mounting holes of the two noise recording devices form an angle with each other, and the angle is in the range of 0 degrees to 160 degrees.

[0024] According to one embodiment, the monitoring device is provided with a limit switch for defining or restricting the starting position and the terminating position.

[0025] According to one embodiment, the limit switch includes a position sensor or a first stop member located on the mounting base of the monitoring device, and a second stop member provided on and cooperating with the main body of the monitoring device.

[0026] According to one embodiment, the position sensor is a Hall sensor, and the second stop member is a magnetic body.

[0027] According to one embodiment, the second stop defines a starting stop portion and an ending stop portion.

[0028] According to one embodiment, the monitoring device is pivotally mounted on a mounting base about an axis, and the mounting base is mounted on or near a linear device.

[0029] According to one embodiment, the monitoring device further includes at least one of an infrared sensor and a camera, and a purge gas outlet that is matched therewith for purging cleaning thereof.

[0030] According to one embodiment, the drive motor is a stepper motor or a servo motor.

[0031] According to another aspect of the present invention, there is also provided a self-cleaning linear series online monitoring system, including at least one communication front-end machine and at least one sensor chain, and the at least one sensor chain includes the self-cleaning monitoring device as described above.

[0032] According to another aspect of the present invention, there is also provided a linear device, and the linear device includes the self-cleaning linear series online monitoring system as described above.

[0033] According to one embodiment, the linear device is selected from one of a belt conveyor, a pipe gallery, and a large-scale stress monitoring facility.

[0034] According to one embodiment, the linear device is a belt conveyor, such as a belt conveyor.

[0035] According to another aspect of the present invention, there is also provided a belt conveyor, and the belt conveyor includes: a conveyor belt; a driving device for driving the conveyor belt; a set of idlers for supporting and carrying the conveyor belt; a mounting structure arranged along a transportation path for mounting and / or supporting the conveyor belt and the set of idlers; and the belt conveyor further includes the self-cleaning monitoring device or the linear series online monitoring system as described above.

[0036] According to one embodiment, the mounting structure includes two longitudinally extending path girders, and a plurality of mounting beams that are spaced apart from each other and assembled between the two path girders, and the set of idlers is mounted on the mounting beams.

[0037] According to one embodiment, the belt conveyor further includes cross beams arranged between a plurality of adjacent mounting beams, and the self-cleaning monitoring device is mounted on at least one of the mounting beams and the cross beams.

[0038] According to one embodiment, the belt conveyor device includes an annular conveyor belt composed of an upper conveyor belt and a lower conveyor belt, wherein the linear series on-line monitoring system is configured to monitor the noise from at least one of the upper conveyor belt, the lower conveyor belt, the driving device, and the idler group.

[0039] According to one embodiment, the belt conveyor device is configured to be applicable to the material conveyance in at least one of a factory, a restaurant, a coal mine, a dock, and a port.

[0040] More embodiments of the present invention can also achieve other advantageous technical effects not listed one by one. Some of these other technical effects may be partially described below and can be expected and understood by those skilled in the art after reading the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] By referring to the following description together with the drawings, the above features and advantages of these embodiments and other features and advantages, as well as the ways to achieve them, will become more apparent, and the embodiments of the present invention can be better understood.

[0042] Figure 1 is a perspective three-dimensional schematic diagram of a belt conveyor device, on which a plurality of monitoring devices according to the first embodiment of the present invention are installed.

[0043] Figure 2 is Figure 1 An enlarged perspective three-dimensional schematic diagram of a section of the belt conveyor device shown, schematically showing the monitoring device according to the first embodiment of the present invention and its arrangement on the belt conveyor device in an enlarged view.

[0044] Figure 3 is Figure 2 A further enlarged schematic diagram of the monitoring device shown, further schematically showing the monitoring device of the first embodiment.

[0045] Figure 4 is Figures 1 - 3 An enlarged perspective three-dimensional schematic diagram of the monitoring device according to the first embodiment of the present invention seen from one perspective, especially schematically showing the structure, installation, and arrangement of the noise acquisition device and its cleaning mechanism installed thereon.

[0046] Figure 5 is Figures 1 - 3 shown according to the first embodiment of the monitoring device from a different Figure 4 Another perspective enlarged perspective three-dimensional schematic diagram of the monitoring device shown, schematically showing the structure, installation, and arrangement of the noise acquisition device and its cleaning mechanism installed thereon from another perspective.

[0047] Figure 6 is Figures 1 - 3An enlarged three-dimensional schematic diagram of the monitoring device according to the first embodiment, with a part of its outer shell removed, showing the internal structure of the monitoring device, and in particular schematically showing the purge air passage and the purge gas outlet of the cleaning mechanism.

[0048] Figure 7A Shows in the form of an orthographic projection Figures 1 - 3 An overall schematic diagram of the monitoring device of the illustrated embodiment.

[0049] Figure 7B Is Figure 7A An appropriately enlarged schematic cross-sectional view taken along the section line A-A in, showing the intake passage of the cleaning mechanism, the internal purge air passage, and each purge gas outlet.

[0050] Figure 8 Is similar to Figure 2 An enlarged three-dimensional schematic diagram of a section of the belt conveyor device shown, schematically showing the monitoring device according to the second embodiment of the present invention and its arrangement on the belt conveyor device, where the belt conveyor device can be Figure 1 The similar belt conveyor device shown.

[0051] Figure 9 Is Figure 8 A further enlarged schematic diagram of the monitoring device shown, further schematically showing the monitoring device of the second embodiment.

[0052] Figure 10 Is Figures 8 - 9 An enlarged three-dimensional schematic diagram of the monitoring device according to the second embodiment of the present invention viewed from one perspective, in particular schematically showing the noise acquisition device mounted thereon and the structure, installation, and arrangement of its cleaning mechanism.

[0053] Figure 11A Is Figures 8 - 9 Shown according to the second embodiment from a different Figure 10 Another enlarged three-dimensional schematic diagram viewed from a perspective different from that shown, schematically showing the noise acquisition device mounted thereon and the structure, installation, and arrangement of its cleaning mechanism from another perspective.

[0054] Figure 11B Is Figure 11A Viewed from a perspective substantially opposite to Figures 8 - 9 An enlarged three-dimensional schematic diagram of the monitoring device shown, schematically showing the noise acquisition device mounted thereon and its cleaning mechanism from another perspective, especially the purge gas outlet below.

[0055] Figure 12 Is Figures 8 - 9An enlarged perspective view of the monitoring device according to the second embodiment, with a part of its housing removed, showing the internal structure of the monitoring device, especially schematically showing the purge air passage and the purge gas outlet of the cleaning mechanism, and the drive motor for pivoting the monitoring device about an axis.

[0056] Figure 13 is Figure 12 An enlarged view of the shown drive motor, especially showing the connection features of its drive shaft.

[0057] Figure 14 Shows in orthographic projection Figures 8 - 9 An overall view of the monitoring device according to the second embodiment, especially showing the arrangement of its noise collection device and limit switch.

[0058] Figure 15 Shows in orthographic projection Figures 8 - 9 An overall view of the monitoring device according to the second embodiment, showing the state and arrangement of the monitoring device (and its limit switch) in the starting position.

[0059] Figure 16 Shows in orthographic projection Figures 8 - 9 An overall view of the monitoring device according to the second embodiment, showing the state and arrangement of the monitoring device (and its limit switch) pivoted to the end position.

[0060] Figure 17 Shows in orthographic projection Figures 8 - 9 An overall view of the monitoring device according to the second embodiment, showing the state and arrangement of the monitoring device pivoted to an intermediate position between the starting position and the end position.

[0061] Figure 18 Is a schematic cross-sectional view taken along Figure 17 The section line B-B in, showing the intake passage of the cleaning mechanism, the internal purge air passage, and the purge air passage branches leading to the respective purge gas outlets.

[0062] Figure 19 Schematically shows a schematic diagram of an example of the air path for supplying compressed air to the cleaning mechanism, schematically showing the supply, arrangement, and pipelines of the compressed air.

[0063] Figure 20 Schematically shows a schematic diagram of being connected to the intake passage of an example of a monitoring device of the present invention to supply compressed air thereto.

[0064] Figure 21Schematically shows an example of the arrangement of a compressed gas pipeline connected to a plurality (illustrated as two) of monitoring devices of the belt conveying equipment of the present invention to supply compressed air thereto. Detailed implementation mode

[0065] In the following description of the drawings and the detailed implementation mode, the details of one or more embodiments of the present invention will be set forth. From these descriptions, the drawings, and the claims, other features, objects, and advantages of the present invention will be apparent.

[0066] It should be understood that the embodiments illustrated and described are not limited in application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the drawings. The illustrated embodiments may be other embodiments and can be implemented or carried out in various ways. The examples are provided by way of explanation of the disclosed embodiments rather than by way of limitation. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the scope or essence of the disclosure of the present invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to still produce additional embodiments. Therefore, the disclosure of the present invention covers such modifications and variations that fall within the scope of the appended claims and their equivalent elements.

[0067] Similarly, it can be understood that the phrases and terms used herein are for the purpose of description and should not be considered restrictive. The use of "including", "comprising", or "having" and their variants herein is intended to open - endedly include the items listed thereafter and their equivalents as well as additional items.

[0068] In the present invention, unless otherwise clearly specified and defined, terms such as "install", "connect", "join", etc. should be understood in a broad sense. For example, they can be directly connected or indirectly connected through an intermediate medium; "fixed connection" can be a direct fixed connection or assembly, or an indirect fixed connection or assembly. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, for those of ordinary skill in the art, unless otherwise clearly specified and defined, the orientation and direction terms "upper", "lower", "left", "right", etc. associated with the monitoring device and its component parts are described and defined in combination with the orientation of the monitoring device in its normal use state.

[0070] The present invention will be further described and explained in detail below in conjunction with the drawings and specific embodiments.

[0071] First Embodiment

[0072] Figure 1 is a perspective three-dimensional schematic diagram of a belt conveying device 200, on which a plurality of monitoring devices 100 according to the first embodiment of the present invention are installed. Figure 2 is Figure 1 an enlarged perspective three-dimensional schematic diagram of a section of the belt conveying device 200 shown in FIG., schematically showing the monitoring device 100 according to the first embodiment of the present invention and its arrangement on the belt conveying device 200. Figure 3 is Figure 2 a further enlarged schematic diagram of the monitoring device 100 shown in FIG., further schematically showing the arrangement of the monitoring device 100 of the first embodiment.

[0073] A non-limiting example of the belt conveying device 200 is a belt conveyor 200, which is a continuous transportation machine that uses a conveyor belt as the traction and load-bearing component to continuously and steplessly transport materials. It has the advantages of long transportation distance, large transportation capacity, small working resistance, easy installation, low power consumption, and less wear. The conveyor belt of the belt conveyor winds around a driving roller and various reversing rollers, for example. An appropriate tension is applied by a tensioning device. During operation, under the drive of the driving device, the conveyor belt runs through the frictional force and tension between the roller and the conveyor belt. Materials are continuously sent onto the conveyor belt and move along with the conveyor belt, thereby realizing the transportation of materials. The main components of the belt conveyor include a driving device, a roller group, a vertical tensioning device, a roller group, a cleaner, a conveyor belt, a safety protection device, etc. These are all prior arts and will not be elaborated one by one.

[0074] As Figures 1 - 3 shown, the belt conveyor 200 can be installed and circulate along a transportation path defined by longitudinally extending path girders 250 (for example, there can be two path girders 250, only one is shown in the figure) for transporting materials. The path girders 250 can be erected on a plurality of spaced-apart support feet 220, for example. After installation, the conveyor belt (such as a belt) of the belt conveyor 200 forms an annular structure, which is shown in the figure as including, for example, an upper conveyor belt 210A and a lower conveyor belt 210B (not shown). A plurality of installation girders 230, such as equally spaced apart, are provided between the two path girders 250. Rollers 240 can be installed on the installation girders 230 to support and hold the upper conveyor belt 210A, facilitating the upper conveyor belt 210A to carry and transport materials on it. According to an example, as Figures 1 - 3As shown, in order to facilitate the more reliable and capacious installation of some specific materials, such as easily falling coal, bulk materials such as grains, flour, etc., the upper conveyor belt 210A is constructed in a ditch-like shape, for example, having an inverted trapezoidal cross-section, and is supported by two rollers 240 that are arranged at an angle to each other at each mounting beam 230 and conform to and support the structure of the upper conveyor belt, so that it is particularly convenient to reliably carry and convey bulk materials such as coal, other powdered or granular materials, etc. Of course, those skilled in the art can understand that the structure of the upper conveyor belt 210A is not limited to Figures 1 - 3 as shown, and it can also be other structures. For example, in the case where the upper conveyor belt is a simple flat conveyor belt, the rollers 240 can be simple horizontal rollers, and the number at each location can also be one, etc.

[0075] In the above example, although the upper conveyor belt 210A and the lower conveyor belt 210B are shown as being divided into upper and lower parts as shown in the figure, in fact, they are integral and together belong to and form a (circular) conveyor belt as a whole. Of course, in some cases, for example, in the case where it is not necessary to circulate and move in a circular motion mode (such as conveying materials by reciprocating motion of the conveyor belt within a certain moving distance range, for example, in some factory or catering industry occasions), only the upper conveyor belt 210A can be arranged without arranging the lower conveyor belt 210B that forms a circular conveyor belt together with it. These are all within the scope of the present invention.

[0076] A common example of the upper and lower conveyor belts is a belt. For example, a belt formed by rubber + woven fiber composite, or a conveyor belt formed by a steel belt. Of course, other forms of conveyor belts, such as those in the form of mesh chains, chain plates, mesh belts, etc., are all within the scope of the present invention.

[0077] For example, as Figures 1 - 3 shown, a plurality of monitoring devices 100 can be provided on a plurality of cross beams 260 that are spaced apart between two path longitudinal beams 250. The cross beams 260 can be arranged, for example, between every two mounting beams 230, and of course, they can also be arranged in other ways. One or more monitoring devices 100 can also be arranged on the belt conveyor 200 or near it. For example, they can be arranged on the mounting beams 230, and / or on the path longitudinal beams 250, or at other suitable or required monitoring positions, etc. These are all within the scope of the present invention.

[0078] As described at the beginning of this article, the present invention relates to the noise monitoring of linear devices, such as belt conveyor devices with a fixed path. Since the belt conveyor device generates noise during operation, including but not limited to the upper and lower conveyor belts, idlers, drive devices, drive drums, and / or reversing drums, etc., therefore, the present invention arranges a monitoring device 100 to collect the noise of the belt conveyor device during operation at multiple key positions (for example, the positions where its multiple vulnerable and consumable parts are located). Since the noise after an operation anomaly or a fault occurs is different from the noise during normal operation. For example, when an anomaly or a fault occurs in the conveyor belt or idlers, etc., the decibel level, frequency distribution curve, etc. of the noise will show obvious changes different from those during normal operation, and these can be analyzed and judged by a dedicated monitoring or analysis system / device. Common monitoring indicators of noise include: the intensity of the noise, that is, the sound pressure in the sound field; the characteristics of the noise, that is, the various frequency components of the sound pressure. After the noise signal is collected, the noise signal / data can be processed and analyzed by a dedicated monitoring or analysis system / device. For example, to determine whether there is an operation anomaly or a fault. When an anomaly is detected, an alarm can be issued to alert relevant personnel or workstations, and / or the location or component where the anomaly / fault occurs can be located. Thus, the working continuity, safety, stability, and reliability of the belt conveyor device can be effectively improved, and the labor and maintenance costs are reduced.

[0079] The following introduces the monitoring device 100 of the first embodiment of the present invention and its general concept and implementation manner.

[0080] As Figures 4 - 6 shown, the design and structure of the monitoring device 100 according to the first embodiment are presented. The monitoring device 100 can be installed at a suitable required installation position (for example, fixed by screws as shown in the figure) through a mounting seat 130, such as on the crossbeam 260 shown in the figure.

[0081] The main body 110 of the monitoring device 100 (after the monitoring device 100 is installed) can generally present as a substantially square, for example, a substantially rectangular block shape, such as a square block with chamfered corners at the four corners, a drum shape, or a symmetric (quasi-hexagonal) shape composed of two identical isosceles trapezoids merged mirror-symmetrically at the bottom edge as Figure 6 shown, etc. The shape of the main body of the monitoring device 100 is not particularly limited and can be any other suitable shape as long as it is convenient to implement the present invention or meets its specific application.

[0082] As Figures 4 - 6As shown, on each of the left and right sides of the square (or quasi-hexagonal) body 110 of the monitoring device 100, one or more, for example, two noise recording devices 140A and 140B, and 140C and 140D as shown in the figure, are arranged on each side. The noise recording device can be any suitable recording device. However, considering factors such as cost and size, a preferred example is a microphone. Of course, when applicable and necessary, other recording devices are also possible, such as sound level meters, headphones, recording pens, sound cards, sound sensors, noise meters, frequency analyzers, real-time analyzers, sound intensity analyzers, noise level analyzers, noise dosimeters, automatic recorders, tape recorders, etc., which are also within the scope of the present invention.

[0083] In Figures 4 - 6 In the symmetric (quasi-hexagonal) shape formed by mirror-merging two identical isosceles trapezoids at the bottom as shown, among the noise recording devices arranged on one side, for example, the upper noise recording device 140A or 140C, due to its direction pointing to this side and being inclined upward (the upward angle can be adjusted according to design / requirements) and its direction pointing to this side and being inclined downward (the downward angle can be adjusted according to design / requirements), it can receive and collect noise from this side and from above and below this side. Similarly, among the noise recording devices arranged on the other side, for example, the upper noise recording device 140B or 140D, due to its direction pointing to the other side and being inclined upward (the upward angle can be adjusted according to design / requirements) and its direction pointing to the other side and being inclined downward (the downward angle can be adjusted according to design / requirements), it can receive and collect noise from the other side and from above and below this side. For the belt conveyor 200 to which the monitoring device 100 of the first embodiment is applied, on the one hand, the monitoring device 100 can focus on monitoring the running noise of the upper conveyor belt 210A and the lower conveyor belt 210B when passing through the cross beam 260, and on the other hand, it can also focus on monitoring the noise of the multiple idlers 240 installed on the two mounting beams 230 on the left and right sides of the cross beam 260, so as to be able to detect and handle it in a timely manner when specific noises occur in abnormal or faulty states.

[0084] As an important concept of the present invention, since the belt conveyor equipment may encounter relatively harsh working conditions in some application scenarios, such as outdoors, or in places with a lot of dust, powder, moisture, and water vapor, after a period of use of the monitoring device, its noise recording device may encounter the accumulation or coverage of dust, powder, moisture, water vapor, etc., which will adversely affect the audio information collection and recording effect, or even damage the noise recording device. Therefore, the present invention aims to provide a monitoring device 100 with a self-cleaning function. It periodically or as needed purges and cleans the respective noise recording devices 140A, 140C, 140B, 140D through the purge gas outlets 150A, 150C, 150B, 150D provided at or near the positions of the noise recording devices, without the need for special manual cleaning, thus greatly saving manual maintenance and improving the reliability, stability, and lifespan of the noise recording devices.

[0085] More specifically, as shown in the figure, an intake passage in the form of an intake pipe 120 is installed on the monitoring device 100. One end of it is connected to an external compressed gas supply source (not shown, preferably supplying high-pressure purge gas) to receive high-pressure purge gas from the compressed gas supply source, and the other end is connected to the purge air duct 160 inside the monitoring device 100, so as to supply the high-pressure purge gas to the purge gas outlets 150A, 150C, 150B, 150D via the purge gas inlet 120A and the purge air duct 160, for purging and cleaning the respective noise recording devices 140A, 140C, 140B, 140D. The high-pressure purge gas can be general compressed air, and its pressure is sufficient to provide effective purging and gas flushing. Of course, in some cases, as needed, the high-pressure purge gas can be air, or it can be an inert gas such as nitrogen, for example, in underground coal mine applications with sufficient safety requirements. In some high-humidity scenarios, the high-pressure purge gas can be compressed dry air. In some high-temperature environments, the high-pressure purge gas can also be cold air to cool the noise recording device while purging, and so on. These are all within the scope of the present invention.

[0086] The following combines Figures 7A - 7B to further describe the self-cleaning structure of the monitoring device 100. Figure 7A Shows a general schematic diagram of the monitoring device 100 according to Figures 1 - 3 the first embodiment shown in a front projection view. Figure 7B Is along Figure 7ASchematic cross-sectional view taken along the sectional line A-A, showing the intake passage 120 of the cleaning mechanism, the internal purge airway 160, and the purge airway branches 160A and 160B that communicate with the internal purge airway 160 and lead to the respective purge gas outlets 150A, 150C, 150B, and 150D. The purge gas from the intake passage 120 passes through the internal purge airway 160 and the purge airway branch 160A to the purge gas outlets 150A and 150B for purging and cleaning the noise recording devices 140A and 140B, respectively. The purge gas from the intake passage 120 passes through the internal purge airway 160 and the purge airway branch 160B to the purge gas outlets 150C and 150D for purging and cleaning the noise recording devices 140C and 140D, respectively. This purge cleaning can be periodic, such as a preset automatic execution program, or can be specifically carried out according to a specification.

[0087] Second Embodiment

[0088] The following will further describe the second embodiment of the present invention in conjunction with the attached Figures 8 - 18 drawings in further detail.

[0089] Figure 8 is a magnified three-dimensional schematic view similar to Figure 2 a section of the belt conveyor device 200 shown, schematically showing the monitoring device 300 according to the second embodiment of the present invention and its arrangement on the belt conveyor device 200, where the belt conveyor device 200 can be Figure 1 a belt conveyor device 200 similar to that shown. Figure 9 is Figure 8 a further magnified schematic view of the monitoring device 300 shown, further schematically showing the monitoring device 300 of the second embodiment. Figure 10 is Figures 8 - 9 a magnified three-dimensional schematic view of the monitoring device 300 according to the second embodiment of the present invention taken from one perspective, particularly schematically showing the structure, installation, and arrangement of the noise collection device and its cleaning mechanism mounted thereon. Figure 11 is Figures 8 - 9 a magnified three-dimensional schematic view of the monitoring device 300 according to the second embodiment taken from another perspective different from Figure 10 that shown, schematically showing the structure, installation, and arrangement of the noise collection device and its cleaning mechanism mounted thereon from another perspective. Figure 11B is Figure 11A a magnified three-dimensional schematic view of the monitoring device 300 shown taken from a perspective substantially opposite to Figures 8 - 9 that shown, schematically showing the noise collection device and its cleaning mechanism mounted thereon, particularly the purge gas outlets 400A and 350B below. Figure 12 isFigures 8 - 9 An enlarged three-dimensional schematic view of the monitoring device 300 according to the second embodiment, with a part of its housing removed, showing the purging internal structure of the monitoring device 300, particularly schematically showing the purging air channels and purging gas outlets of the cleaning mechanism and the drive motor for pivoting the monitoring device 300 about an axis. Figure 13 is Figure 12 An enlarged schematic view of the shown drive motor, particularly showing the connection features of its drive shaft.

[0090] The structure and design of the belt conveyor equipment 200 to which the monitoring device 300 is applied, and the arrangement of the monitoring device 300 on or near the belt conveyor equipment 200 can be substantially the same as described in the first embodiment, and will not be elaborated herein one by one.

[0091] The main body 310 of the monitoring device 300 can generally be presented as a substantially square, for example, a substantially rectangular block shape, such as a square block with chamfered corners at the four corners, a drum shape, a hexagon, and so on. The shape of the main body of the monitoring device 300 is not particularly limited and can be any other suitable shape as long as it facilitates the implementation of the present invention or meets its specific applications.

[0092] As Figures 8 - 9 As shown, on one side of the square main body 310 of the monitoring device 300, one or more, for example, two noise recording devices 340A and 340B as shown in the figure are arranged. The noise recording device can be any suitable recording device, but considering factors such as cost and size, a preferred example is a microphone. Of course, other recording devices are also possible when applicable and needed, such as sound level meters, headphones, voice recorders, sound cards, sound sensors, noise meters, and so on, which are also within the scope of the present invention.

[0093] As an important concept of the present invention, since the belt conveyor equipment may encounter relatively harsh working conditions in some application scenarios, such as outdoors, or in places with a lot of dust, dust, moisture, and water vapor, after the monitoring device has been used for a period of time, its noise recording devices may be affected by the accumulation or coverage of dust, dust, moisture, water vapor, etc., which will adversely affect the audio information collection, recording effect, or even damage the noise recording devices. Therefore, the present invention aims to provide a monitoring device 300 with a self-cleaning function, which periodically or as needed respectively purges and cleans the noise recording devices 340A and 340B through the purging gas outlets 350A and 350B provided at or near the positions of the noise recording devices, without the need for special manual cleaning, thus greatly saving manual maintenance and improving the reliability, stability, and lifespan of the noise recording devices.

[0094] Compared with the monitoring device 100 of the first embodiment, the main differences of the monitoring device 300 of the second embodiment are as follows: (1) The noise recording devices are only arranged on one side rather than both sides of the monitoring device 300, so the quantity is less and the cost is lower; (2) The monitoring device 300 of the second embodiment can be driven to pivot controllably around an axis, so that it can more flexibly focus on monitoring / collecting noises from more target positions / components as needed or preset, while the monitoring device 100 of the first embodiment is fixed.

[0095] Regarding Figures 8 - 10 The noise recording devices 340A and 340B arranged on one side as shown, since they point to this side ( Figure 10 the left side as shown) and are respectively tilted upward and downward (the upward and downward angles can be adjusted according to design / needs), so they can receive and focus on collecting noises from this side and from above and below this side. Different from the first embodiment, the monitoring device 300 of the second embodiment does not have any noise recording devices on the other side, but is arranged to be pivotable around an axis, so that it can more flexibly focus on monitoring / collecting noises from more target positions / components, as further detailed below.

[0096] Figure 14 Shows in a front projection view Figures 8 - 9 an overall schematic diagram of the monitoring device 300 of the second embodiment as shown, especially showing the arrangement of its noise collection devices and limit switches. Figure 15 Shows in a front projection view Figures 8 - 9 an overall schematic diagram of the monitoring device 300 of the second embodiment as shown, showing the state and arrangement of the monitoring device 300 (and its limit switches) in the starting position. Figure 16 Shows in a front projection view Figures 8 - 9 an overall schematic diagram of the monitoring device 300 of the second embodiment as shown, showing the state and arrangement of the monitoring device 300 (and its limit switches) pivoted to the end position. Figure 17 Shows in a front projection view Figures 8 - 9 an overall schematic diagram of the monitoring device 300 of the second embodiment as shown, showing the state and arrangement of the monitoring device 300 pivoted to an intermediate position between the starting position and the end position.

[0097] More specifically, as shown in the figure, different from the first embodiment where it is fixed and cannot pivot or rotate, the monitoring device 300 of the second embodiment is mounted on the mounting base 330 through a rotating shaft 360, and is configured to be driven by a driving motor 390 (such as a stepping motor) installed in the main body 310 to pivot around the rotating shaft 360. The driving motor 390 forms an electrical (and / or communication) connection with the outside through the interface 390A on the main body 310, and forms a driving connection with the rotating shaft 360 through its motor rotating shaft 3901 (which can have a fixed connection feature as shown in the figure, such as a key connection). When the driving motor 390 rotates, it drives the monitoring device 300 to pivot around the rotating shaft 360. For example, it can pivot from Figure 15 the starting position shown in the figure around the axis to Figure 17 a plurality of intermediate positions shown in the figure, and reach Figure 16 the termination position shown in the figure, and can pivot back from Figure 16 the termination position shown in the figure to a plurality of intermediate positions and finally reach Figure 15 the starting position shown in the figure. During this period, the positions / components of the noise recording devices 340A and 340B that can focus on monitoring / acquiring noise change within a wider range, thereby enabling the focusing on monitoring / acquiring noise from more target positions / components in a more flexible and broader manner than the first embodiment, but only requiring fewer noise recording devices.

[0098] The pivoting of the monitoring device 300 and its noise recording devices 340A and 340B around the axis can be either automatically and regularly performed as pre-set or pivot around the axis under control according to an instruction. For this purpose, on the one hand, it is to facilitate grasping and / or controlling the real-time orientation of the monitoring device 300 and its noise recording devices 340A and 340B, and on the other hand, it is also for its safe and controlled pivoting, as well as other purposes, etc. The inventor of the present invention has provided limit switches on the monitoring device 300 of the second embodiment. According to an example, the limit switch of the monitoring device 300 includes a position sensor 380 such as a Hall sensor (which can also act as a first stop member) provided on the mounting base 330, and a second stop member 370 provided on the monitoring device 300 and cooperating with it, which preferably can adopt or deploy a magnetic member such as a magnet. When in Figure 15 the starting position shown in the figure, the second stop member 370 (in its starting stop portion 370A as shown in the figure) is configured to contact the position sensor 380 such as a Hall sensor that also acts as a first stop member and be stopped by it and sense its position. At this time, on the one hand, mechanical stop can be used for limiting, and on the other hand, the driving motor can be controlled to stop rotating through sensing this starting position for electrical control limiting; when pivoting to be in Figure 16When at the shown termination position, the second stop member 370 (shown at its termination stop portion 370B as shown in the figure) is configured to be stopped by the contour of the corresponding part of the mounting base 330, and thus cannot pivot further in the original pivoting direction, but can pivot in the reverse direction towards the starting position; in addition, since this termination position can be preset (the angular value of rotating from the starting position to this position can be preset), when the sensor detects and determines the starting position, it also means that this termination position can be determined simultaneously. Therefore, the drive motor can be controlled to stop rotating at this termination position after rotating a preset angle, thus also playing the role of electronically limiting the position at the termination position. That is to say, according to this example, when the first stop member simultaneously acts as the position sensor 380 such as a Hall sensor, this limit switch can act as a position switch (Hall switch) to limit / constrain the starting position and the termination position of the monitoring device 300 by controlling the start / stop of the drive motor. At the same time, this limit switch can also act as a travel switch to limit / constrain the starting position and the termination position of the monitoring device 300 mechanically.

[0099] Figure 18 is a schematic cross-sectional view taken along Figure 17 section line B-B in the figure, showing the intake passage 320 of the cleaning mechanism, the inlet of the purge gas 3201, the internal purge air passage 3101, and the purge gas outlets 350A, 350B. As Figures 17 - 18 shown, an intake passage in the form of an intake pipe 320 is installed on the monitoring device 300, one end of which is connected to an external compressed gas supply source (not shown, preferably supplying high-pressure purge gas) to receive high-pressure purge gas from the compressed gas supply source, and the other end is connected to the purge air passage 3101 inside the monitoring device 300, so as to supply the high-pressure purge gas along Figure 18 the direction shown by the arrow in the figure from the purge gas inlet 3201 through the purge air passage 3101 (and possible purge air passage branches) to the purge gas outlets 350A, 350B for purging and cleaning the respective noise recording devices 340A, 340B. This purging and cleaning can be regular, such as a preset automatic execution program, or can be carried out specifically according to a designation.

[0100] According to an alternative example, in addition to setting the noise recording device, the monitoring device 300 can also be provided with additional components to achieve additional measurement and / or monitoring functions. For example, as Figures 10 - 12As shown, one or more additional measurement / monitoring devices 400 may also be provided at the interval between the two noise recording devices 340A and 340B. The measurement / monitoring device 400 may be an infrared sensor such as an infrared thermal imager or an infrared thermometer, or a camera, or one or more of them. The infrared thermometer and the camera may also be an integrated device integrated together. Based on similar concepts and considerations, at least one purge gas outlet, such as purge gas outlets 400A and / or 400B, is also configured for the measurement / monitoring device 400, and they may share the purge air duct with the purge gas outlets 350A and 350B. For example, as Figure 10 and Figures 11A - 11B shown, the lower purge gas outlet 400A and the upper purge gas outlet 350A may share a purge air duct, and the upper purge gas outlet 400B and the lower purge gas outlet 350B may share a purge air duct, etc., and these are all within the scope of the present invention.

[0101] Figure 19 Schematically shows a schematic diagram of an example of the air circuit for supplying compressed air to the cleaning mechanism, and schematically shows the supply, arrangement and pipelines of the compressed air. Figure 20 Schematically shows a schematic diagram of being connected to the intake passage of one of the monitoring devices 300 of the present invention to supply compressed air thereto. Figure 21 Schematically shows an example of the arrangement of the compressed gas pipeline 500 and multiple compressed air branch pipelines 500A connected to a group of multiple (illustrated as two, but can be any number) monitoring devices 300 of the belt conveyor device 200 of the present invention to supply compressed air thereto.

[0102] As Figures 19 - 21 shown, the compressed air from the compressed gas supply source 510 is transported to the gas storage tank 520, and via, for example, the main pipeline 500 arranged along the belt conveyor device (belt conveyor) 200, such as along and installed on one or two path longitudinal beams 250 thereof, and a group of monitoring devices 100, 300 configured for the belt conveyor device ( Figure 19 multiple are illustrated therein, and one of the monitoring devices is labeled 300), and the corresponding multiple branch pipelines 500A (for example, one branch pipeline 500A for supplying air to each monitoring device), and is communicated to the intake passages (such as the intake passage 320) of the respective monitoring devices 100, 300, so as to provide compressed air for self-cleaning for the group of multiple monitoring devices 100, 300.

[0103] According to a preferred example, pneumatic quick connectors can be used to connect between the compressed gas pipeline 500 and the compressed air branch pipeline 500A, as well as between the compressed air branch pipeline 500A and the intake channels (such as the intake channel 320) of the monitoring devices 100, 300. In this way, when multiple monitoring devices are arranged on the belt conveyor equipment, the rapid installation and disassembly of the gas pipeline can be achieved.

[0104] A gas control valve, such as a gas control valve 510 in the form of a solenoid valve, can be arranged between the gas storage tank 520 and the main pipeline 500 to control the on / off of the compressed gas, thereby controlling the gas supply and / or the gas purging operation of the monitoring device. For example, the supply / turn-off of the compressed gas, the supply pressure, the supply duration, the supply time interval, etc.

[0105] The above-mentioned monitoring devices 100, 300 are a group of multiple monitoring devices 100, 300 that can be arranged along the conveying path of the belt conveyor equipment, forming at least one sensor chain. The intake channels of the monitoring devices 100, 300 can be connected to a common compressed gas pipeline through their respective compressed air branch pipelines, and this common compressed gas pipeline is arranged along the extension path of the belt conveyor equipment 200 and connected to a compressed gas supply source.

[0106] According to an example, at least one sensor chain formed by the above-mentioned group of multiple monitoring devices 100, 300 is part of the sensor chain of a linear series on-line monitoring system. Thus, the linear series on-line monitoring system can control the operation of at least one sensor chain (i.e., including a group of multiple monitoring devices 100, 300), including the monitoring / detection, data entry and transmission, etc. of the monitoring devices 100, 300, as well as the operation and control of the compressed gas purging and cleaning mode of the above-mentioned monitoring devices 100, 300. An example of the linear series on-line monitoring system can be seen in the linear series on-line monitoring system described in the Chinese invention patent with the publication number CN118482757B and the invention name "A Linear Series On-line Monitoring System and Its Control Method" applied by the same applicant on July 9, 2024. The content of this Chinese invention patent is incorporated into this application by reference as if it were fully described in this application.

[0107] According to an example, the above-mentioned linear series on-line monitoring system can include at least one communication front-end machine and at least one sensor chain, and this sensor chain can include a group of multiple self-cleaning monitoring devices 100, 300, thereby making the linear series on-line monitoring system self-cleaning.

[0108] According to another aspect of the present invention, a linear device is further provided, which includes the above self-cleaning linear series online monitoring system or a group of multiple self-cleaning monitoring devices 100, 300. Those skilled in the art can understand that the linear device can be a belt conveying device such as a belt conveyor, a pipe gallery, and large linear arranged devices such as stress monitoring facilities, and so on.

[0109] According to another aspect of the present invention, a belt conveying device is further provided, including: a conveyor belt; a driving device for driving the conveyor belt; a set of idlers for supporting and carrying the conveyor belt; an installation structure arranged along the transportation path for installing and / or supporting the conveyor belt and the set of idlers; the belt conveying device further includes the self-cleaning monitoring devices 100, 300 or the self-cleaning linear series online monitoring system as described above.

[0110] According to an example, an example of the motor of the electric drive mechanism can be a stepper motor, but it can also be any other suitable motor form, such as a servo motor, and so on.

[0111] According to an example, the monitoring device is positioned on the belt conveying device to facilitate at least one noise recording device thereof to focus on monitoring the noise of the target position / component.

[0112] According to an example, the drive motor of the monitoring device can be designed with a braking mechanism.

[0113] According to an example, at least one noise recording device of the monitoring device is positioned such that the central axis of its mounting hole forms a certain angle with respect to the vertical direction, and this angle is within the range of greater than zero degree and less than or equal to 45 degrees.

[0114] According to an example, at least one noise recording device of the monitoring device is positioned such that the central axis of its mounting hole forms a certain angle with respect to the horizontal direction, and this angle is within the range of greater than zero degree and less than or equal to 45 degrees. For example, the central axes of the mounting holes of the upper and lower two noise recording devices on one side of the monitoring device form an angle within the range of 45 degrees to 135 degrees with each other, such as preferably forming an angle of approximately 90 degrees.

[0115] According to an example, at least one noise recording device of the monitoring device is positioned such that the central axis of its mounting hole forms a certain angle with respect to the vertical direction, and this angle is approximately 45 degrees. In addition, those of ordinary skill in the art can also understand that in the present invention, at least one noise recording device of the monitoring device is positioned such that the angle formed by the central axis of its mounting hole with respect to the vertical direction is close to zero degree or close to 90 degrees, and these are all within the scope of the present invention.

[0116] The basic concept of the present invention has been described in conjunction with the embodiments. Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments, combinations with each other and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A self-cleaning monitoring device, characterized in that, The self-cleaning monitoring device includes: a main body; at least one noise recording device mounted on the main body; and a cleaning mechanism for cleaning the noise recording device by gas purging.

2. The self-cleaning monitoring device according to claim 1, wherein, The cleaning mechanism includes an air inlet passage provided outside the main body, a purging air passage communicated with the air inlet passage and located inside the main body, and a purging gas outlet communicated with the purging air passage, wherein the purging gas outlet is configured and positioned to facilitate purging and cleaning of the corresponding noise recording device.

3. The self-cleaning monitoring device according to claim 2, wherein The monitoring device is a set of multiple linearly-connected monitoring devices arranged along the extension path of a linear device. Among them, the air inlet passages of the monitoring devices are connected to a common compressed gas pipeline through respective compressed air branch pipelines, and the common compressed gas pipeline is arranged along the extension path of the linear device and connected to a compressed gas supply source.

4. The self-cleaning monitoring device according to claim 3, wherein, The set of multiple monitoring devices is part of a sensor chain of a linearly-connected on-line monitoring system.

5. The self-cleaning monitoring device according to any one of claims 1-4, characterized in that Noise recording devices are provided on each of the left and right sides of the main body.

6. The self-cleaning monitoring device according to claim 5, wherein On each of the left and right sides of the main body, two noise recording devices are provided one above the other.

7. The self-cleaning monitoring device according to any one of claims 1-4, characterized in that, The monitoring device is mounted on or near a linear device and cannot pivot about an axis.

8. The self-cleaning monitoring device according to any one of claims 1-4, characterized in that, At least one noise recording device is provided on one side of the main body.

9. The self-cleaning monitoring device according to claim 8, wherein The monitoring device can pivot about an axis and further includes a driving motor for driving the monitoring device to pivot about the axis between a starting position and an ending position.

10. The self-cleaning monitoring device according to claim 9, characterized in that, The at least one noise recording device includes two noise recording devices provided on one side of the main body of the monitoring device, wherein the central axes of the mounting holes of the two noise recording devices form an angle with each other, and the angle is in the range of 0 degree to 160 degrees.

11. The self-cleaning monitoring device according to claim 10, wherein, The monitoring device is provided with a limit switch for defining or restricting the starting position and the ending position.

12. The self-cleaning monitoring device according to claim 11, wherein The limit switch includes: a position sensor or a first stop provided on the mounting base of the monitoring device; and a second stop provided on and cooperating with the main body of the monitoring device.

13. The self-cleaning monitoring device according to claim 12, wherein The position sensor is a Hall sensor, and the second stop is a magnetic body.

14. The self-cleaning monitoring device according to claim 12 or 13, characterized in that, The second stop defines a starting stop portion and an ending stop portion.

15. The self-cleaning monitoring device according to any one of claims 9-13, characterized in that, The monitoring device is pivotally mounted on a mounting base about an axis, and the mounting base is mounted on or near a linear device.

16. The self-cleaning monitoring device according to any one of claims 1-4 and 9-13, characterized in that, The monitoring device further includes at least one of an infrared sensor and a camera, and a purging gas outlet matched therewith for purging and cleaning thereof.

17. A self-cleaning linear series online monitoring system, comprising at least one communication front-end machine and at least one sensor chain, characterized in that, The at least one sensor chain includes the self-cleaning monitoring device according to any one of claims 1-16.

18. A linear device, characterized in that, The linear device includes the self-cleaning linearly-connected on-line monitoring system according to claim 17.

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