Sound monitoring optical cable laying method of belt conveyor

Abstract

The invention relates to a sound monitoring optical cable laying method of a belt conveyor, which is applied to the field of optical cable laying, and comprises a belt conveyor bracket, a distributed optical cable body laid on the belt conveyor bracket and an optical cable coiling tool, the optical cable coiling tool comprises a disc piece, a round rod piece, a first sliding block, a second sliding block, a plurality of supporting rods hinged to the first sliding block and the second sliding block at the same time, a traction mechanism, a circular ring frame, a screw rod, an arc-shaped block and an auxiliary belt. The sound monitoring optical cable laying method of the belt conveyor comprises the following steps that S1, a monitoring point is preset; s2, installing a coiling tool; s3, adjusting the tool; s4, primarily shaping the optical cable; s5, final shaping of the optical cable; s6, optical cable separation arrangement; S7, repeated arrangement; the defects of traditional linear laying can be effectively overcome, local high-sensitivity monitoring points are formed by adopting interval type circular disc cable laying, meanwhile, distributed optical cable bodies are densely arranged in a winding area, and the capturing capacity and the signal-to-noise ratio of vibration signals can be enhanced.

Description

Technical Field

[0001] This invention relates to a method for laying optical cables, and in particular to a method for laying optical cables for sound monitoring on a belt conveyor, applicable to the field of optical cable laying. Background Technology

[0002] During normal operation, the sound spectrum of a belt conveyor is relatively stable and continuous. When a component malfunctions, abnormal vibrations and noises are generated, altering the frequency, intensity, rhythm, or timbre of the sound. By capturing and analyzing these changes, the type and location of the fault can be determined. Currently, fiber optic cables are commonly laid on the surface of the belt conveyor support. By monitoring the vibration data of the belt conveyor during operation and the changes in laser pulses within the fiber optic cable, corresponding fault detection operations can be performed.

[0003] Chinese patent CN206126174U discloses a distributed optical cable temperature measurement device and a temperature measurement and early warning system. The device uses four detection optical cables arranged along the first and second belts to monitor the belt conveyor online. The optical cables are laid in a horizontal straight line.

[0004] Chinese patent CN221092402U discloses a monitoring system for the operating status of a belt conveyor. It uses a distributed vibration-measuring optical cable laid along the top of the inner side of the protective cover to detect the status of the belt conveyor. Although it adopts a spiral winding method, the winding operation is relatively complicated and requires a large amount of manual operation.

[0005] Current fiber optic cable laying methods typically include horizontal straight-line, U-shaped, and S-shaped laying. However, when installing fiber optic cables, the horizontal straight-line laying method has limited contact between the fiber optic cable and the vibration source, making it difficult to effectively capture high-frequency sound wave signals. Furthermore, the straight path results in a small time difference in vibration signal propagation, making it difficult for the DAS (Distributed Acoustic Sensing System) to accurately locate anomalies. It is also susceptible to interference from background noise along the entire line. The U-shaped laying method cannot effectively alarm if the actual fault occurs in an uncovered area. Moreover, when adjusting the monitoring focus later, rewiring and system interruption are required. Additionally, signals entering and exiting the fiber optic cable within the U-shaped loop may interfere with each other. The S-shaped laying method requires continuous bending throughout the entire length, and the bending spacing needs to be strictly controlled. It also requires a large number of fixing clips, which is inefficient in confined or high-altitude working environments. The path length is two to three times that of the straight distance, increasing project costs. In addition, dense bending can cause micro-bending loss, leading to interference from adjacent equipment in the acquisition of sensitive features along the entire length. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to lay optical cables in a way that can take into account both low cost and high precision when performing sound monitoring of belt conveyors.

[0007] To address the aforementioned problems, this invention provides a method for laying optical cables for sound monitoring on belt conveyors. The method includes a belt conveyor support, a distributed optical cable body laid on the belt conveyor support, and an optical cable winding tool detachably connected to the belt conveyor support. The optical cable winding tool includes a disc, a circular rod fixedly connected to the center of the disc, multiple equally spaced moving grooves formed around the surface of the disc near the circular rod, a first slider slidably connected to the moving grooves, multiple equally spaced sliding grooves formed around the surface of the circular rod, a second slider slidably connected to the sliding grooves, multiple support rods hinged to both the first and second sliders, a traction mechanism fixedly connected to the back of the disc and simultaneously fixedly connected to the multiple first sliders, a circular ring frame inserted into the end of the circular rod away from the disc, a screw threaded to the upper end of the circular ring frame, an arc-shaped block fixedly connected to the lower end of the screw, and multiple auxiliary belts placed on the support rods. The method for laying optical cables for sound monitoring on belt conveyors includes the following steps:

[0008] S1. Pre-set monitoring points: Set up a monitoring point every 20m on the belt conveyor support, and mark each monitoring point with a marking tool;

[0009] S2. Install the coiling tool: First, install the optical cable coiling tool on the first monitoring point near the head of the belt conveyor bracket, and align the center point of the disc with the monitoring point.

[0010] S3. Adjustment tool: Activate the traction mechanism to move the support rod from a horizontal state to an inclined state;

[0011] S4. Initial shaping of optical cable: Place one end of the distributed optical cable body under the arc block, constrain it by rotating the screw, and then wind the distributed optical cable body around the support rod to make it into a spiral state with unequal diameter.

[0012] S5. Final shaping of optical cable: The auxiliary tape is laid horizontally on the surface of the distributed optical cable body along the surface of the support rod. The auxiliary tape is used to constrain part of the surface of the distributed optical cable body to form a constraint structure with an Ω-shaped cross section.

[0013] S6, Optical cable disconnection and arrangement: The distributed optical cable body in S5 is disconnected from the surface of the round rod and arranged on the first monitoring point at the head end of the belt conveyor support using cable ties, in order to collect vibration sound data of the idler rollers and drums on the support.

[0014] S7. Repeated deployment: After the distributed optical cable body of the first monitoring point is installed, first remove the optical cable coiling tool, then move it to the next monitoring point, and then repeat S3-S6 to continue the installation of subsequent monitoring points until all the finalized distributed optical cable bodies are installed on the monitoring points, and the laying is completed.

[0015] A distributed audio host is installed at one end of the belt conveyor support. One end of the distributed optical cable body installed in S6 is inserted into the distributed audio host for analysis and testing.

[0016] The above-mentioned method for laying optical cables for sound monitoring of belt conveyors can effectively overcome the defects of traditional straight-line laying, while balancing the cost and performance of S-shaped or U-shaped laying. In addition, the use of intermittent circular coiled cable laying to form local high-sensitivity monitoring points, along with the dense arrangement of distributed optical cable bodies in the coiled area, can enhance the ability to capture vibration signals and the signal-to-noise ratio.

[0017] As a further supplement to this application, the multiple moving slots correspond one-to-one with the multiple sliding slots, and the length of the sliding slots is greater than the length of the moving slots.

[0018] As a further supplement to this application, the traction mechanism includes multiple guide cables that are fixedly connected to multiple No. 1 sliders, multiple traction frames that are fixed to the side of the disc and correspond one-to-one with the multiple guide cables, a winding rod that is rotatably connected to the back of the disc, and a drive motor whose output end is connected to the winding rod. The multiple guide cables are respectively wound around the corresponding traction frames, and the multiple guide cables pass through the traction frames and are simultaneously wound and connected to the winding rod.

[0019] As a further supplement to this application, a return spring is installed on the inner wall of the end of the slide away from the disc component, which is fixedly connected to the second slider, and the diameter of the return spring is smaller than the depth of the slide.

[0020] As a further supplement to this application, the auxiliary belt is made of aluminum alloy sheet and coated with electromagnetic shielding coating. Positioning holes are provided at both ends of the auxiliary belt, and the end of the support rod is fixed with a positioning post that engages with the positioning hole on the auxiliary belt.

[0021] The steps for applying clamping constraints to the S5 auxiliary belt are as follows:

[0022] S51. One end of an auxiliary tape is constrained to the surface of the positioning post, and its length is greater than the coverage area of ​​the distributed optical cable body on the surface of the support rod.

[0023] S52. Use clamping tools to clamp the distributed optical cable body and the auxiliary tape covering it on the surface of the support pole together, so that the cross-section of the auxiliary tape of the clamped section is Ω-shaped.

[0024] S53. Loosen the screw to release the fixation on the end of the distributed optical cable body. Then rotate the distributed optical cable body coiled on the surface of the support rod. Repeat steps S51 to S52 to constrain and shape the distributed optical cable body at different positions in the circumferential direction. After completion, proceed to S6.

[0025] As a further supplement to this application, the auxiliary belt is provided with multiple through grooves, the surface of the support rod is provided with guide grooves, the inside of the through grooves is wound with a lifting belt, and the lifting belt and the auxiliary belt are made of the same material. The cross-sectional length of the lifting belt is not greater than the cross-sectional width of the guide groove, and the cross-sectional length of the through groove is less than half the cross-sectional width of the auxiliary belt.

[0026] When the distributed optical cable body coiled on the surface of the strut is in a dense state, a closed constraint treatment is performed, and the steps are as follows:

[0027] N1. When a local area of ​​the distributed optical cable body needs to be kept in a densely coiled state, use clamping tools to press the ends of the auxiliary tape at the corresponding positions to form a zigzag cross section, and apply Ω-shaped constraints to the non-densely coiled area covered by the auxiliary tape.

[0028] N2. Using the needle-and-thread method, insert the lifting belt into the nearest through slot at one end of the zigzag area of ​​the auxiliary belt, and push the lifting belt to move along the guide slot until it reaches the nearest through slot at the other end of the zigzag area and stops.

[0029] N3. Pass the end of the lifting belt in the guide groove through the through groove, and then bend and fold both ends of the lifting belt onto the outer surface of the auxiliary belt's Z-shaped area to form a closed constraint.

[0030] In summary, the beneficial effects of this application are as follows:

[0031] This invention effectively overcomes the shortcomings of traditional straight-line laying, while balancing the cost and performance of S-shaped or U-shaped laying. Furthermore, it employs intermittent circular cable laying to create locally highly sensitive monitoring points. The dense arrangement of distributed optical cables within the coiled area enhances the capture capability and signal-to-noise ratio of vibration signals. Additionally, using a cable coiling tool, through the cooperation of a support rod, a first slider, a second slider, and a guide cable, the distributed optical cable can be wound around the surface of the open support rod, forming a spiral coil with unequal diameters. Then, an auxiliary belt is used to constrain and shape the distributed optical cable on the support rod surface, thus ensuring the coiled cable is in a fixed state, facilitating subsequent installation at predetermined locations for monitoring the operating status of conveyor belt supports and idlers. Attached Figure Description

[0032] Figure 1 A schematic diagram illustrating the operation process of laying the distributed optical cable body of this application;

[0033] Figure 2 This is a schematic diagram illustrating the operation process of using an auxiliary tape to clamp and constrain the distributed optical cable body in this application.

[0034] Figure 3This is a top view of the distributed optical cable body of this application installed on the belt conveyor bracket;

[0035] Figure 4 This is a schematic diagram of the distributed optical cable body of this application installed along the belt conveyor in a spiral coiled state;

[0036] Figure 5 This is an overall perspective view of the optical cable winding tool of this application;

[0037] Figure 6 For this application Figure 5 Enlarged diagram of point A in the diagram;

[0038] Figure 7 For this application Figure 5 Enlarged diagram of point B in the diagram;

[0039] Figure 8 This is a perspective view of the drive motor and winding rod of this application;

[0040] Figure 9 This is a schematic diagram showing the state of the distributed optical cable body after the auxiliary strip of this application has constrained and finalized its shape;

[0041] Figure 10 This is a schematic diagram of the distributed optical cable body of this application after finalization;

[0042] Figure 11 This is a top view of the through groove and auxiliary strip of this application;

[0043] Figure 12 This is a top view of the guide groove and strut of this application;

[0044] Figure 13 This is a dynamic demonstration diagram showing how the support belt of this application provides a closed constraint for the distributed optical cable body in a dense area.

[0045] Explanation of the labels in the diagram:

[0046] 1. Disc component; 2. Round rod component; 11. Moving groove; 12. Slider No. 1; 21. Slide groove; 22. Slider No. 2; 23. Return spring; 3. Support rod; 4. Guide rope; 5. Screw; 6. Arc block; 7. Traction frame; 8. Winding rod; 9. Drive motor; 10. Auxiliary belt; 101. Through groove; 31. Guide groove; 13. Lifting belt; 14. Circular frame; 15. Positioning column; 100. Distributed optical cable body; 200. Belt conveyor bracket; 300. Distributed sound host. Detailed Implementation

[0047] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0048] First implementation method:

[0049] A method for laying optical fiber cables for sound monitoring of belt conveyors. Figures 4-9 The diagram shows a conveyor belt support 200, a distributed optical cable body 100 laid on the conveyor belt support 200, and an optical cable winding tool that can be detached and connected to the conveyor belt support 200 (the specific detachment and connection structure can be a bolt connection or a magnetic connection). The optical cable winding tool includes a disc 1, a round rod 2 fixedly connected to the center of the disc 1, multiple equally spaced moving grooves 11 formed around the surface of the disc 1 near the round rod 2, a first slider 12 slidably connected to the moving grooves 11, and multiple equally spaced... The components include a groove 21 formed around the surface of the round rod 2, a second slider 22 slidably connected to the groove 21, multiple support rods 3 that are simultaneously hinged to the first slider 12 and the second slider 22, a traction mechanism fixedly connected to the back of the disc 1 and simultaneously fixedly connected to multiple first sliders 12, a ring frame 14 inserted into the end of the round rod 2 away from the disc 1, a screw 5 threadedly connected to the upper end of the ring frame 14, an arc-shaped block 6 fixedly connected to the lower end of the screw 5, and multiple auxiliary belts 10 placed on the support rods 3.

[0050] Figure 1 The method for laying the optical cable for sound monitoring of a belt conveyor includes the following steps:

[0051] S1. Pre-set monitoring points: Set up a monitoring point every 20m on the belt conveyor support 200, and mark each monitoring point with a marking tool;

[0052] S2. Install the coiling tool: First, install the optical cable coiling tool on the first monitoring point near the head of the belt conveyor bracket 200, and align the center point of the disc 1 with the monitoring point.

[0053] S3, Adjustment tool: Activate the traction mechanism to move the support rod 3 from a horizontal state to an inclined state;

[0054] S4. Initial shaping of optical cable: Place one end of the distributed optical cable body 100 under the arc block 6, constrain it by rotating the screw 5, and then wind the distributed optical cable body 100 around the support rod 3 to make it into a spiral state with unequal diameter.

[0055] S5. Final shaping of optical cable: The auxiliary tape 10 is laid horizontally on the surface of the distributed optical cable body 100 along the surface of the support rod 3. The auxiliary tape 10 is used to constrain part of the surface of the distributed optical cable body 100 to form a constraint structure with an Ω-shaped cross section.

[0056] S6, Optical cable disconnection and arrangement: The distributed optical cable body 100 in S5 is disconnected from the surface of the round rod 2, and it is arranged on the first monitoring point at the head end of the belt conveyor support 200 using cable ties, in order to collect vibration sound data of the idler rollers and drums on the support.

[0057] S7. Repeated deployment: After the distributed optical cable body 100 of the first monitoring point is installed, first remove the optical cable coiling tool, then move it to the next monitoring point, and then repeat S3-S6 to continue the installation of subsequent monitoring points until all the finalized distributed optical cable bodies 100 are installed on the monitoring points, and the laying is completed.

[0058] Figure 4 As shown, a distributed audio host 300 is arranged at one end of the belt conveyor bracket 200. One end of the distributed optical cable body 100 arranged in S6 is inserted into the distributed audio host 300 for analysis and testing.

[0059] Figure 2 The steps for applying the clamping constraint of the S5 auxiliary belt 10 are shown below:

[0060] S51. One end of an auxiliary tape 10 is constrained to the surface of the positioning post 15, and its length is greater than the coverage area of ​​the distributed optical cable body 100 on the surface of the support rod 3.

[0061] S52. Use clamping tools to clamp the distributed optical cable body 100 on the surface of the support rod 3 and the auxiliary tape 10 covering it together, so that the cross section of the auxiliary tape 10 of the clamped section is Ω-shaped.

[0062] S53. Loosen screw 5 to release the fixation on the end of distributed optical cable body 100. Then rotate the distributed optical cable body 100 coiled on the surface of support rod 3. Repeat steps S51 to S52 to constrain and shape the distributed optical cable body 100 at different positions in the circumferential direction. After completion, proceed to S6.

[0063] Specifically, during monitoring, the spirally coiled distributed optical cable body 100 is used in conjunction with a distributed sound host 300. The distributed sound host 300 (a prior art technology; its specific structure and working principle are well-known to those skilled in the art and will not be described in detail here) is a continuous distributed optical cable sound sensing system. It communicates with a server via the host's network port. A monitoring platform installed on the server can display real-time data of the sound monitoring of the entire distributed optical cable body 100, as well as various alarm, historical, and statistical data queries. It can monitor abnormal sounds from the conveyor belt in real time, determine the location of the abnormal sounds, and issue alarm prompts. It uses Rayleigh scattering light generated when laser pulses propagate in the optical cable as the sensing medium. When the distributed optical cable body 100 is subjected to external vibration or sound wave disturbance, the phase and intensity of the scattered light change. The system converts these changes into identifiable signals through high-speed sampling and signal processing technology.

[0064] When arranging the distributed optical cable body 100, it is necessary to first arrange the distributed optical cable body 100 into multiple segments of spiral coils with unequal diameters (e.g., Figure 3 As shown, the innermost layer (the smaller diameter part of the distributed optical cable body 100 in the unequal diameter spiral winding state, i.e., the part away from the disc component 1) contacts the bracket, bearing seat, and base of the idler roller, and is used to receive vibration data from the idler roller. The outer layer (the larger diameter part of the distributed optical cable body 100 in the unequal diameter spiral winding state, i.e., the part closer to the disc component 1) mainly senses the macroscopic strain of the conveyor belt support 200 structure. The outer layer mainly contacts the conveyor belt support 200. When the idler roller support bends or twists due to loosening, deformation, foundation settlement, or a huge impact (such as a large piece of material falling), the bracket fixing the distributed optical cable body 100 will generate relative displacement. This displacement will directly act on the coiled distributed optical cable body 100, causing the diameter of the entire coiled distributed optical cable body 100 to be stretched or compressed, thereby realizing the monitoring operation of the bracket.

[0065] In summary, the distributed optical cable body 100 can synchronously monitor the conveyor belt support 200 composed of the conveyor belt rollers and mounting frames during operation. Furthermore, its unequal diameter spiral structure, with gaps between adjacent layers of the distributed optical cable body 100, allows pressure to be distributed over a longer optical cable segment, avoiding sharp, periodic compression and significantly reducing micro-bending loss. This ensures the quality of optical signal transmission. Moreover, when the support vibrates or deforms, stress can be absorbed and dispersed more evenly by the entire coiled distributed optical cable body 100, rather than concentrated at a few points, thus protecting the distributed optical cable body 100.

[0066] Finally, by adopting a coiling method similar to a frustum shape, the longest distributed optical cable body 100 can be accommodated in the smallest space, which saves more space than coiling into a single diameter ring. This effectively overcomes the defects of traditional straight-line laying, while balancing the cost and performance of S-shaped or U-shaped laying. It can also form local high-sensitivity monitoring points, and the dense arrangement of the distributed optical cable body 100 in the coiling area can enhance the vibration signal capture capability and signal-to-noise ratio.

[0067] The distributed optical cable body 100 in the coiled state in S6 is positioned by cable ties, including the shaft frame for mounting rollers on the belt bracket and other supports. After being constrained and shaped, the distributed optical cable body 100 in the spiral coiled state with unequal diameter is tightly attached to the predetermined position, which can accurately sense the sound changes at each position and accurately locate abnormal positions.

[0068] In addition, the distributed optical cable body 100 with unequal diameter spiral coils arranged every 20m has a 20m redundancy length. Along the belt conveyor support 200, if cutting, splicing or other operations are required, maintenance personnel have sufficient margin to operate without having to re-lay the entire distributed optical cable body 100. This reduces the difficulty and cost of later maintenance. Furthermore, when the belt conveyor support 200 undergoes large-scale deformation (for example, foundation settlement causing a section of the support to slowly sag), this redundant distributed optical cable body 100 can absorb and buffer this distributed strain by slowly releasing its length, preventing the distributed optical cable body 100 from breaking due to exceeding its tensile limit and protecting the integrity of the entire monitoring system.

[0069] Figures 5-6 As shown, multiple movable slots 11 correspond one-to-one with multiple sliding slots 21, and the length of the sliding slot 21 is greater than the length of the movable slot 11.

[0070] Figures 7-8 As shown, the traction mechanism includes multiple guide cables 4 that are fixedly connected to multiple sliders 12, multiple traction frames 7 that are fixed to the side of the disc 1 and correspond one-to-one with the multiple guide cables 4, a winding rod 8 that is rotatably connected to the back of the disc 1, and a drive motor 9 whose output end is connected to the winding rod 8. The multiple guide cables 4 are respectively wound around the corresponding traction frames 7, and the multiple guide cables 4 pass through the traction frames 7 and are simultaneously wound and connected to the winding rod 8.

[0071] Figure 6 As shown, a return spring 23, which is fixedly connected to the second slider 22, is installed on the inner wall of the end of the slide groove 21 away from the disc component 1, and the diameter of the return spring 23 is smaller than the depth of the slide groove 21.

[0072] Figure 9 As shown, the auxiliary strip 10 is made of aluminum alloy sheet and coated with electromagnetic shielding coating. Both ends of the auxiliary strip 10 are provided with positioning holes, and the end of the support rod 3 is fixed with a positioning post 15 that engages with the positioning hole on the auxiliary strip 10. A soft pad can be added to the inside to reduce damage to the surface of the distributed optical cable body 100 during clamping.

[0073] Specifically, when using a cable winding tool to wind the distributed optical cable body 100, the end of the distributed optical cable body 100 can be constrained by the arc block 6 first. Then, the drive motor 9 (which can be replaced by a hand crank to simplify the device) drives the winding rod 8 to wind, which in turn drives the guide cable 4 to wind and lift the multiple (in this application, four are designed, but not limited to four, and can be adjusted according to the actual situation) support rods 3 on the surface of the round rod 2 to form a design similar to a frustum. After that, the distributed optical cable body 100 is wound to form a spiral winding state with unequal diameter.

[0074] Afterwards, winding is stopped, and the auxiliary tape 10 is used to perform multi-point constraint treatment on the surface of the distributed optical cable body 100 of each support rod 3. Therefore, the auxiliary tape 10 is a thin tape design, which is easy to deform. Thus, it is easier to clamp with clamping tools (such as pliers, etc., no specific type is limited). Since the distributed optical cable body 100 is on the surface of the support rod 3, after clamping in the corresponding area, most of the structure of the distributed optical cable body 100 can be wrapped, and it is difficult for it to reset on its own. This forms an effective constraint and shaping effect on the distributed optical cable body 100 within the Ω shape (such as...). Figures 9-10 (As shown).

[0075] If it is necessary to remove the shaped distributed optical cable body 100 from the surface of the round rod 2, first rotate the drive motor 9 in the reverse direction to release the guide cable 4. Under the action of the return spring 23, the support rod 3 returns to the horizontal state. Then rotate the screw 5 in the reverse direction to release the constraint of the arc block 6. Then pull the ring frame 14 out from the tail end of the round rod 2 and remove one end of the auxiliary belt 10 sleeved on the surface of the positioning post 15 from the surface of the positioning post 15. After removing the shaped distributed optical cable body 100 from the round rod 2, it can be installed in the predetermined position.

[0076] The optical cable winding tool enables rapid and standardized deployment of high-performance optical cable winding operations in complex industrial environments. The winding diameter of the distributed optical cable body 100 can be adjusted according to the actual situation (compared to a structure with a fixed-size spiral groove inside). When no adjustment is needed (the open state of the support rod 3 does not need to be adjusted after S3; if adjustment is needed, the open state of the support rod 3 must be readjusted), the consistency of spiral winding can be guaranteed. It has a good improvement effect on the problems of poor consistency and low efficiency of manual winding.

[0077] When a section of the fixed distributed optical cable body 100 or nearby idler needs to be replaced, tools can be used to open up part of the Ω-shaped auxiliary belt 10, remove the distributed optical cable body 100 that is restrained inside, reposition it, and then use cable ties or other fixing devices to re-fix the distributed optical cable body 100.

[0078] Second implementation method:

[0079] Figures 11-12 As shown, the auxiliary belt 10 has multiple through grooves 101, the surface of the support rod 3 has a guide groove 31, the inside of the through groove 101 is wound with a lifting belt 13, and the lifting belt 13 and the auxiliary belt 10 are made of the same material. The cross-sectional length of the lifting belt 13 is not greater than the cross-sectional width of the guide groove 31, and the cross-sectional length of the through groove 101 is less than half the cross-sectional width of the auxiliary belt 10.

[0080] When the distributed optical cable body 100 coiled on the surface of the strut 3 is in a dense state, a closed constraint process is performed, and the steps are as follows:

[0081] N1. When a local area of ​​the distributed optical cable body 100 needs to be kept in a densely coiled state, use clamping tools to press the ends of the auxiliary tape 10 at the corresponding positions to form a zigzag cross section, and apply Ω-shaped constraints to the non-densely coiled area covered by the auxiliary tape 10.

[0082] N2. Using a needle-and-thread method, insert the lifting belt 13 into the nearest through slot 101 at one end of the auxiliary belt 10's T-shaped area, and push the lifting belt 13 to move along the guide slot 31 until it reaches the nearest through slot 101 at the other end of the T-shaped area and stops.

[0083] N3. Pass the end of the lifting belt 13 in the guide groove 31 through the through groove 101, and then bend and fold both ends of the lifting belt 13 onto the outer surface of the T-shaped area of ​​the auxiliary belt 10 to form a closed constraint.

[0084] Unlike the first embodiment, this embodiment mainly addresses the issue in the first embodiment where, in areas with denser coiling, the distance between two adjacent Ω-shaped constraint portions is small, resulting in poor constraint effect of the spiral coiling.

[0085] like Figure 13 As shown, specifically, when multiple Ω-shaped clamping points are densely arranged in a straight line along the surface of the support rod 3, adjacent clamping points will interfere with each other, resulting in insufficient deformation of the auxiliary tape 10, uneven clamping force, and even damage to the distributed optical cable body 100. Therefore, in dense areas, vertical deformation can be performed at both ends of the dense area of ​​the distributed optical cable body 100 corresponding to the surface of the auxiliary tape 10 to initially form a Z-shaped structure. Then, the lifting tape 13 is passed through the through groove 101 closest to the Z-shaped area and then slides along the guide groove 31 on the surface of the support rod 3. Through subsequent pushing action, the head of the lifting tape 13 (that is, the end of the lifting tape 13 located in the guide groove 31, hereinafter referred to as the head, and the other end as the tail) can be moved. Move the head until it reaches the other end of the Z-shaped area (to facilitate viewing the displacement of the head, paint can be applied to the surface of the head). At this point, pass the head of the lifting strap 13 through the through groove 101 (a small hole can be provided at this time, and then the hook structure can be used to pull it out of the through groove 101; other methods can also be used to achieve the purpose of pulling out the through groove 101, and the method is not fixed). Then, manually tighten both ends of the lifting strap 13 so that the surface of the lifting strap 13 is tightly attached to the distributed optical cable body 100. Then, bend the lifting strap 13 upwards, and the bent part is tightly attached to the Z-shaped surface of the auxiliary strap 10. Use glue or other methods to fix the lifting strap 13 and the auxiliary strap 10 together to achieve centralized closed constraint treatment.

[0086] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Various changes made within the knowledge of those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A method for laying an optical cable for sound monitoring of a belt conveyor, characterized in that, The system includes a conveyor belt support (200), a distributed optical cable body (100) laid on the conveyor belt support (200), and an optical cable coiling tool detachably connected to the conveyor belt support (200). The optical cable coiling tool includes a disc (1), a round rod (2) fixedly connected to the center of the disc (1), multiple equally spaced moving grooves (11) formed around the surface of the disc (1) near the round rod (2), a first slider (12) slidably connected to the moving grooves (11), multiple equally spaced sliding grooves (21) formed around the surface of the round rod (2), and a first slider (12) slidably connected to the first slider (11). The method for laying the sound monitoring optical cable of the belt conveyor includes the following steps: a second slider (22) on the groove (21), multiple support rods (3) that are simultaneously hinged to the first slider (12) and the second slider (22), a traction mechanism that is fixedly connected to the back of the disc (1) and simultaneously fixedly connected to multiple first sliders (12), a ring frame (14) inserted into the end of the round rod (2) away from the disc (1), a screw (5) threaded to the upper end of the ring frame (14), an arc block (6) fixedly connected to the lower end of the screw (5), and multiple auxiliary belts (10) placed on the support rods (3). S1. Preset monitoring points: Set up a monitoring point every 20m on the belt conveyor support (200) and mark each monitoring point with a marking tool; S2. Install the coiling tool: First, install the optical cable coiling tool on the first monitoring point near the head of the belt conveyor bracket (200), and align the center point of the disc (1) with the monitoring point; S3, Adjustment tool: Start the traction mechanism to move the support rod (3) from the horizontal state to the inclined state; S4. Initial shaping of optical cable: Place one end of the distributed optical cable body (100) under the arc block (6), constrain it by rotating the screw (5), and then wrap the distributed optical cable body (100) around the support rod (3) to make it into a spiral state with unequal diameter. S5, final shaping of optical cable: The auxiliary tape (10) is laid horizontally on the surface of the distributed optical cable body (100) along the surface of the support rod (3), and the auxiliary tape (10) is used to constrain part of the surface of the distributed optical cable body (100) to form a constraint structure with an Ω-shaped cross section. S6, Optical cable disconnection arrangement: The distributed optical cable body (100) in S5 is disconnected from the surface of the round rod (2), and it is arranged on the first monitoring point at the head end of the belt conveyor support (200) using cable ties to collect vibration sound data of the rollers and drums on the support; S7. Repeated installation: After the distributed optical cable body (100) of the first monitoring point is installed, first remove the optical cable coiling tool, then move it to the next monitoring point, and then repeat S3-S6 to continue the installation of subsequent monitoring points until all the finalized distributed optical cable bodies (100) are installed on the monitoring points, and the laying is completed. One end of the belt conveyor bracket (200) is equipped with a distributed sound host (300), and one end of the distributed optical cable body (100) arranged in S6 is inserted into the distributed sound host (300) for analysis and testing.

2. The method for laying an optical cable for sound monitoring of a belt conveyor according to claim 1, characterized in that, Each of the multiple movable slots (11) corresponds to a multiple sliding grooves (21), and the length of the sliding groove (21) is greater than the length of the movable slot (11).

3. The method for laying an optical cable for sound monitoring of a belt conveyor according to claim 1, characterized in that, The traction mechanism includes multiple guide cables (4) that are fixedly connected to multiple first sliders (12), multiple traction frames (7) fixed on the side of the disc (1) and corresponding to the multiple guide cables (4), a winding rod (8) rotatably connected to the back of the disc (1), and a drive motor (9) whose output end is connected to the winding rod (8). The multiple guide cables (4) are respectively wound around the corresponding traction frames (7), and the multiple guide cables (4) are simultaneously wound and connected to the winding rod (8) after passing through the traction frames (7).

4. The method for laying an optical cable for sound monitoring of a belt conveyor according to claim 1, characterized in that, A reset spring (23) fixedly connected to the second slider (22) is installed on the inner wall of the end of the slide groove (21) away from the disc (1), and the diameter of the reset spring (23) is smaller than the depth of the slide groove (21).

5. The method for laying an optical cable for sound monitoring of a belt conveyor according to claim 1, characterized in that, The auxiliary strip (10) is made of aluminum alloy sheet and coated with electromagnetic shielding coating. Both ends of the auxiliary strip (10) are provided with positioning holes, and the end of the support rod (3) is fixed with a positioning post (15) that engages with the positioning hole on the auxiliary strip (10).

6. The method for laying an optical cable for sound monitoring of a belt conveyor according to claim 5, characterized in that, When performing clamping constraints on the S5 auxiliary belt (10), the steps are as follows: S51. One end of an auxiliary tape (10) is constrained to the surface of the positioning post (15), and its length is greater than the coverage area of ​​the distributed optical cable body (100) on the surface of the support rod (3). S52. Use clamping tools to clamp the distributed optical cable body (100) on the surface of the support rod (3) and the auxiliary tape (10) covering it together, so that the cross section of the auxiliary tape (10) of the clamped section is Ω-shaped. S53. Loosen the screw (5) to release the fixation on the end of the distributed optical cable body (100). Then rotate the distributed optical cable body (100) that is coiled around the surface of the support rod (3). Repeat steps S51 to S52 to constrain and shape the distributed optical cable body (100) at different positions in the circumferential direction. After completion, proceed to S6.

7. The method for laying an optical cable for sound monitoring of a belt conveyor according to claim 1, characterized in that, The auxiliary belt (10) has multiple through grooves (101), the surface of the support rod (3) has a guide groove (31), the inside of the through groove (101) is wound with a lifting belt (13), and the lifting belt (13) and the auxiliary belt (10) are made of the same material. The cross-sectional length of the lifting belt (13) is not greater than the cross-sectional width of the guide groove (31), and the cross-sectional length of the through groove (101) is less than half the cross-sectional width of the auxiliary belt (10).

8. The method for laying an optical cable for sound monitoring of a belt conveyor according to claim 7, characterized in that, When the distributed optical cable body (100) coiled on the surface of the strut (3) is in a dense state, a closed constraint process is performed, and the steps are as follows: N1. When the local area of ​​the distributed optical cable body (100) needs to be kept in a dense coiled state, use clamping tools to press the ends of the auxiliary tape (10) at the corresponding position to form a zigzag cross section, and perform Ω-shaped constraint on the non-dense coiled area covered by the auxiliary tape (10). N2. Using the needle-and-thread method, insert the lifting belt (13) into the nearest through slot (101) at one end of the zigzag area of ​​the auxiliary belt (10), push the lifting belt (13) to move along the guide slot (31) until it reaches the nearest through slot (101) at the other end of the zigzag area and then stops. N3. Pass the end of the lifting belt (13) in the guide groove (31) through the through groove (101) there, and then bend and fold the two ends of the lifting belt (13) onto the outer surface of the zigzag area of ​​the auxiliary belt (10) to form a closed constraint.

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