Mining traffic light real-time display type anchor rod tension monitoring device
By designing a real-time display anchor bolt tension monitoring device for mining traffic lights, which uses a microprocessor and pressure sensor combined with LED lights to display the anchor bolt tension status, the problem of low monitoring efficiency and lack of intuitive indication in the existing technology is solved, and timely response and safety improvement are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-31
AI Technical Summary
Existing methods for monitoring anchor bolt tension in mines are inefficient, making it difficult to detect tension anomalies in a timely manner and lacking intuitive status indicators, which increases the safety risks in roadways.
Design a real-time display anchor bolt tension monitoring device using traffic lights in mining applications. The device utilizes a microprocessor and pressure sensor combined with LED lights to display the anchor bolt tension status. The color changes of the traffic lights visually indicate abnormal tension and enable automatic early warning.
It improves the response speed to abnormal anchor bolt tension, significantly reduces the risk of roadway collapse accidents caused by insufficient anchor bolt tension, and enhances the safety of mining operations.
Smart Images
Figure CN224066513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a real-time display type anchor bolt tension monitoring device for mining traffic lights, belonging to the field of anchor bolt tension monitoring technology. Background Technology
[0002] In mining operations, the stability of roadways is crucial to the safe production of the entire mine and the lives of its workers. As a key means of ensuring roadway stability, the effectiveness of rock bolt support directly depends on the effective maintenance of the rock bolt tension. Accurate and timely monitoring of rock bolt tension is of paramount importance for preventing roadway collapses and ensuring the continued safe operation of the mine.
[0003] Currently, there are various methods for monitoring anchor bolt tension in mines. One method involves manual, periodic sampling, where professionals use handheld tension testing equipment to measure the tension of each anchor bolt individually. This method is not only labor-intensive and time-consuming, but also extremely inefficient. Furthermore, due to the long intervals between sampling checks, it is difficult to detect real-time changes in anchor bolt tension within the sampling period, easily leading to a gradual decrease in tension without the user's knowledge, thus posing a potential safety hazard to the roadway.
[0004] Some mines also use traditional electronic monitoring instruments to monitor anchor bolt tension. While these instruments can measure anchor bolt tension values, they have significant shortcomings in data presentation. They typically only display the specific tension data on the instrument screen; however, the complex mining environment and the distracted attention of on-site workers make it difficult to constantly monitor the screen for changes in values. When work is busy or personnel are negligent, information about abnormal tension may be missed, preventing timely countermeasures and increasing safety risks to roadway support.
[0005] Furthermore, existing monitoring systems lack intuitive status indications. When abnormal anchor bolt tension occurs, staff cannot quickly and intuitively determine the current safety status of the anchor bolt; they must analyze and interpret complex data to make a judgment. In the fast-paced environment of mining operations, this severely impacts response efficiency, delays optimal handling, and significantly increases the likelihood of dangerous accidents such as roadway collapses due to insufficient anchor bolt tension. Utility Model Content
[0006] This invention provides a real-time display type anchor bolt tension monitoring device for mine traffic lights, which solves the problems existing in the background art.
[0007] This utility model relates to a mine-use traffic light-type real-time display anchor bolt tension monitoring device, including an anchor bolt, a tray, a jack, and a fixing nut. A monitoring box is fixed to the outside of the jack. The monitoring box contains a microprocessor and a pressure sensor that monitors the hydraulic oil pressure inside the jack. The top of the monitoring box is equipped with red, yellow, and green LED lights connected to the microprocessor. When the tension value detected by the pressure sensor is ≥100% of the set tension value, the microprocessor controls the green light to illuminate; when the tension value detected by the pressure sensor is between 90% and 100% of the set tension value, the microprocessor controls the yellow light to illuminate; and when the tension value detected by the pressure sensor is below 90% of the set tension value, the microprocessor controls the red light to illuminate.
[0008] As a preferred option, the microprocessor controls the yellow light to illuminate and flash every 5 seconds, and the microprocessor controls the red light to illuminate and flash every 3 seconds. This can increase visibility, better avoid missing abnormal tension information due to human negligence, and significantly improve the response speed to abnormal anchor bolt tension.
[0009] As a preferred embodiment, the jack includes an outer shell cylinder with a through hole in the middle, an oil storage chamber inside the outer shell cylinder, a hollow piston inside the oil storage chamber, the outer end of the hollow piston passing through the outer shell cylinder and contacting a fixing nut, and a monitoring box fixed on the outer wall of the outer shell cylinder.
[0010] As a preferred embodiment, the bottom of the outer casing is provided with an oil inlet, and a check ball is provided inside the oil inlet. A dust cap is threaded to the outer end of the oil inlet. The dust cap can prevent dust and impurities from entering the oil inlet and causing blockage.
[0011] As a preferred embodiment, the pallet has an embedded groove on the side near the outer shell cylinder that mates with the outer shell cylinder. The embedded groove allows for quick positioning of the outer shell cylinder. The pallet has a limiting protrusion on the side away from the outer shell cylinder. The inner side of the pallet has a sprayed concrete layer, and the outer side of the sprayed concrete layer has a limiting hole that mates with the limiting protrusion. The limiting protrusion and the limiting hole together prevent the pallet from rotating relative to the outer shell cylinder.
[0012] As a preferred embodiment, a limiting hole two is provided in the embedded groove, and a limiting protrusion two is provided on the outer shell cylinder to cooperate with the limiting hole two, which can prevent relative rotation between the outer shell cylinder and the tray.
[0013] As a preferred embodiment, a fixing sleeve is fixed on the bottom side wall of the monitoring box. The fixing sleeve consists of two semi-circular clips. The top of the upper clip is fixed to the bottom of the monitoring box. The ends of the two clips are provided with connecting flanges, and fastening bolts are provided on the connecting flanges. The fixing sleeve can be easily installed and removed.
[0014] As a preferred embodiment, the top of the monitoring box is bolted with a removable cover plate, and the LED light is fixed to the top of the cover plate. An arc-shaped recess is fixed to the bottom left end of the monitoring box, with a mounting hole for the lower end of the pressure sensor to pass through. The outer casing has a threaded hole that mates with the threaded lower end of the pressure sensor, and an embedding groove that mates with the embedded arc-shaped recess on the outside of the threaded hole. The cover plate is removable, facilitating maintenance of the internal microprocessor and pressure sensor. The embedding groove and the embedded arc-shaped recess allow for quick positioning of the monitoring box and prevent axial shear force on the pressure sensor when the monitoring box is subjected to axial external force, thus better protecting the pressure sensor. The fixing sleeve provides better support and fixation for the monitoring box.
[0015] As a preferred design, three LED lights are arranged in a circle, with a transparent hemispherical protective cover covering the outer side of each LED light. A protective net is installed on the outer side of the protective cover. The combination of the protective net and the protective cover better prevents falling objects from damaging the LED lights. A first fixing edge is provided on the outer side of the protective net, and a second fixing edge is provided on the outer side of the protective cover. The top of the cover plate has a circular groove that mates with the second fixing edge. The first fixing edge is bolted to secure the second fixing edge within the circular groove, facilitating the installation and fixing of the protective cover and protective net. A conical reflector is provided on the lower inner side of the protective cover. The inner wall of the reflector is coated with a reflective layer. The reflector and reflective layer increase light reflection, brightness, and visibility. The reflector and protective cover are an integrated structure, with the bottom of the reflector supported on the top of the cover plate, providing better support for the protective cover and increasing structural stability.
[0016] This utility model has the following beneficial effects:
[0017] The traffic light display module, composed of high-brightness LEDs, allows mine workers to clearly understand the anchor bolt tension status at a glance, even from a distance in complex environments, without the need for complicated data interpretation. This intuitive presentation method greatly improves information acquisition efficiency. Compared to traditional monitoring instruments that only display numerical values, it effectively avoids missing abnormal tension information due to human negligence and significantly improves the response speed to abnormal anchor bolt tension situations.
[0018] The microprocessor automatically analyzes and judges the data collected by the sensors based on the preset tension standard value range and warning threshold, and outputs the corresponding traffic light control signals in a timely manner. When the anchor bolt tension is abnormal, it can quickly issue a visual warning. Compared with manual periodic inspections, it can detect abnormal tension in time, effectively prevent safety accidents such as roadway collapse caused by insufficient anchor bolt tension, and greatly improve the safety of mining operations. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model;
[0021] Figure 3 A schematic diagram of the structure of the protective cover and protective netting;
[0022] In the diagram: 1. Shotcrete layer; 2. Anchor bolt; 3. LED light; 4. Cover plate; 5. Power cord; 6. Fixing nut; 7. Hollow piston; 8. Outer shell; 9. Connecting flange; 10. Jacket; 11. Dust cap; 12. Tray; 13. Monitoring box; 14. Microprocessor; 15. Embedded arc-shaped recess; 16. Pressure sensor; 17. Limiting protrusion two; 18. Limiting protrusion one; 19. Reflector; 20. Fixing edge two; 21. Fixing edge one; 22. Protective cover; 23. Protective net. Detailed Implementation
[0023] The present invention will be further described below with reference to the embodiments.
[0024] Example 1, as Figures 1 to 3 As shown, this utility model is a mine-use traffic light real-time display anchor bolt tension monitoring device, including an anchor bolt 2, a tray 12, a jack, and a fixing nut 6. A monitoring box 13 is fixed to the outside of the jack. The monitoring box 13 is equipped with a microprocessor 14 and a pressure sensor 16 that monitors the hydraulic oil pressure inside the jack. The top of the monitoring box 13 is equipped with red, yellow, and green LED lights 3 connected to the microprocessor 14. When the tension value detected by the pressure sensor 16 is ≥100% of the set tension value, the microprocessor 14 controls the green light to light up; when the tension value detected by the pressure sensor 16 is between 90% and 100% of the set tension value, the microprocessor 14 controls the yellow light to light up; when the tension value detected by the pressure sensor 16 is lower than 90% of the set tension value, the microprocessor 14 controls the red light to light up.
[0025] During operation, anchor bolt 2 is driven into the rock mass and anchored. Then, anchor bolt tray 12, jack, and fixing nut 5 are installed sequentially. The fixing nut 5 is used to tighten the jack, and then a hydraulic pump is used to inject hydraulic oil into the jack. The jack pushes the fixing nut 5 outward, creating hydraulic thrust. Oil injection is stopped once the pump pressure reaches the set value. The hydraulic thrust and the tension of anchor bolt 2 achieve static balance. When powered on, microprocessor 14 operates, and hydraulic sensor 16 monitors the oil pressure and transmits the data to microprocessor 14. The hydraulic pressure is used to calculate the tension of anchor bolt 2. When the tension value detected by pressure sensor 16 is ≥100% of the set tension value, microprocessor 14 controls a green light to illuminate; when the tension value detected by pressure sensor 16 is between 90% and 100% of the set tension value, microprocessor 14 controls a yellow light to illuminate; when the tension value detected by pressure sensor 16 is below 90% of the set tension value, microprocessor 14 controls a red light to illuminate.
[0026] In Example 2, based on Example 1, the microprocessor 14 controls the yellow light to illuminate and flash every 5 seconds, and controls the red light to illuminate and flash every 3 seconds. The pressure sensor 16 can use a MIK-P300 pressure transmitter; the pressure sensor 16 employs a piezoresistive sensing element, where the resistance of the internal semiconductor material changes precisely and linearly when subjected to pressure. The resistance change is converted into a voltage signal output via a Wheatstone bridge circuit. The pressure sensor is finely calibrated to ensure accurate measurement of minute tensile force changes experienced by the anchor bolt 2, with a measurement accuracy of ±0.1 kN.
[0027] The jack includes an outer casing 8 with a through hole in the middle. Inside the casing 8 is an oil storage chamber, and inside the oil storage chamber is a hollow piston 7. The outer end of the hollow piston 7 passes through the casing 8 and contacts a fixing nut 6. The monitoring box 13 is fixed to the outer wall of the casing 8. High-brightness LEDs are used as the traffic light display elements for the LEDs 3, with each LED having a diameter of no less than 30mm to ensure clear visibility even in the dim environment of the mine. It is powered by a 110V underground lighting voltage. The microprocessor 14 can use the STMicroelectronics STM32H7 series, specifically model STM32H743I-EVAL.
[0028] The bottom of the outer casing 8 is provided with an oil inlet, and a check ball is installed inside the oil inlet. A dust cap 11 is threaded onto the outer end of the oil inlet. After oil is filled into the oil inlet, the check ball will seal the oil inlet, and then the dust cap 11 will be screwed onto the outside of the oil inlet.
[0029] The tray 12 has an embedded groove on the side near the outer shell cylinder 8 that mates with the outer shell cylinder 8, and a limiting protrusion 18 on the side of the tray 12 away from the outer shell cylinder 8. The inner side of the tray 12 has a shotcrete layer 1, and the outer side of the shotcrete layer 1 has a limiting hole 1 that mates with the limiting protrusion 18. When the anchor rod 2 is driven into the rock mass, the limiting hole 1 is drilled on the outer side of the shotcrete layer 1, and then the tray 12 is fitted on, with the limiting protrusion 18 inserted into the limiting hole 1.
[0030] The recessed groove is provided with a limiting hole 2, and the outer shell cylinder 8 is provided with a limiting protrusion 2 17 that cooperates with the limiting hole 2.
[0031] A fixing sleeve is fixed on the bottom side wall of the monitoring box 13. The fixing sleeve consists of two semi-circular clips 10. The top of the upper clip 10 is fixed to the bottom of the monitoring box 13. The ends of the two clips 10 are provided with connecting flanges 9, and fastening bolts are provided on the connecting flanges 9.
[0032] A removable cover plate 4 is bolted to the top of the monitoring box 13. An LED light 3 is fixed to the top of the cover plate 4. An arc-shaped recessed platform 15 is fixed to the bottom left end of the monitoring box 13. The recessed platform 15 has a mounting hole for the lower end of the pressure sensor 16 to pass through. The outer casing 8 has a threaded hole that engages with the lower end of the pressure sensor 16. An embedding groove that engages with the recessed platform 15 is located outside the threaded hole. When installing the monitoring box 13, first remove the cover plate 4, then insert the pressure sensor 16 through the mounting hole and screw it into the threaded hole. Then, insert the recessed platform 15 into the embedding groove. Next, use fastening bolts to secure the two sleeves 10. Then, connect the LED light 3 to the microprocessor 14, and finally, fix the cover plate 4 to complete the installation.
[0033] Three LED lights 3 are arranged in a circle. The outer side of the three LED lights 3 is covered by a transparent hemispherical protective cover 22. A protective net 23 is provided on the outer side of the protective cover 22. A fixing edge 1 21 is provided on the outer side of the protective net 23. A fixing edge 20 is provided on the outer side of the protective cover 22. The top of the cover plate 4 is provided with a circular groove that matches the fixing edge 20. The fixing edge 1 21 is used to fix and press the fixing edge 20 into the circular groove by bolts. A conical reflector 19 is provided on the lower inner side of the protective cover 22. A reflective layer is coated on the inner wall of the reflector 19. The reflector 19 and the protective cover 22 are an integral structure. The bottom of the reflector 19 is supported on the top of the cover plate 4. When installing the protective cover 22 and the protective net 23, first insert the second fixing edge 20 of the protective cover 22 into the circular groove, support the bottom of the reflector 19 on the top of the cover plate 4, then place the protective net 23 on it, press the first fixing edge 21 on the second fixing edge 20, and fix it with bolts.
[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0035] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
Claims
1. A mine-used red-green light real-time display type anchor rod tension monitoring device, comprising an anchor rod (2), a tray (12), a jack and a fixing nut (6), characterized in that: The jack is externally fixed with a monitoring box (13), the monitoring box (13) is internally provided with a microprocessor (14) and a pressure sensor (16) for monitoring the hydraulic oil pressure in the jack, the top of the monitoring box (13) is provided with three color LED lamps (3) of red, yellow and green connected with the microprocessor (14), when the tension value detected by the pressure sensor (16) is greater than or equal to 100% of the set tension value, the microprocessor (14) controls the green light to be on; when the tension value detected by the pressure sensor (16) is between 90% and 100% of the set tension value, the microprocessor (14) controls the yellow light to be on, and when the tension value detected by the pressure sensor (16) is less than 90% of the set tension value, the microprocessor (14) controls the red light to be on.
2. The real-time display type anchor rod tension monitoring device for mine according to claim 1, characterized in that: The microprocessor (14) controls the yellow light to be on and flash once every 5 seconds, and the microprocessor (14) controls the red light to be on and flash once every 3 seconds.
3. The real-time display type anchor rod tension monitoring device for mine traffic lights according to claim 1, characterized in that: The jack comprises a shell cylinder (8) provided with a through hole in the middle, the shell cylinder (8) is internally provided with an oil storage cavity, the oil storage cavity is internally provided with a hollow piston (7), the outer end of the hollow piston (7) passes through the shell cylinder (8) and contacts with a fixed nut (6), and the monitoring box (13) is fixed on the outer sidewall of the shell cylinder (8).
4. The real-time display type anchor rod tension monitoring device of claim 3, characterized in that: The bottom of the shell cylinder (8) is provided with an oil inlet, the oil inlet is internally provided with a check ball, and the outer end of the oil inlet is threadedly connected with a dustproof cap (11).
5. The real-time display type anchor rod tension monitoring device for mine according to claim 3, characterized in that: The side of the tray (12) close to the shell cylinder (8) is provided with an embedded groove matched with the shell cylinder (8), the side of the tray (12) away from the shell cylinder (8) is provided with a limiting protrusion one (18), the inner side of the tray (12) is provided with a sprayed concrete layer (1), and the outer side of the sprayed concrete layer (1) is provided with a limiting hole one matched with the limiting protrusion one (18).
6. The mine-used red-green light real-time display type anchor rod tension monitoring device according to claim 5, characterized in that: The embedded groove is internally provided with a limiting hole two, and the shell cylinder (8) is provided with a limiting protrusion two (17) matched with the limiting hole two.
7. The mine-used red-green light real-time display type anchor rod tension monitoring device according to claim 3, characterized in that: The bottom sidewall of the monitoring box (13) is fixed with a fixing sleeve composed of two semicircular clamping sleeves (10), the top of the upper clamping sleeve (10) is fixed with the bottom of the monitoring box (13), the end portions of the two clamping sleeves (10) are provided with connecting flanges (9), and the connecting flanges (9) are provided with fastening bolts.
8. The mine-used red-green light real-time display type anchor rod tension monitoring device according to claim 7, characterized in that: The top of the monitoring box (13) is fixed with a detachable cover plate (4) through bolts, the LED lamps (3) are fixed on the top of the cover plate (4), the left end of the bottom of the monitoring box (13) is fixed with a circular-arc embedded arc-shaped recess (15), the embedded arc-shaped recess (15) is provided with a mounting hole through which the lower end of the pressure sensor (16) passes, the shell cylinder (8) is provided with a threaded hole threadedly matched with the lower end of the pressure sensor (16), and the outer side of the threaded hole is provided with an embedded groove matched with the embedded arc-shaped recess (15).
9. The mine-used red-green light real-time display type anchor rod tension monitoring device according to claim 8, characterized in that: Three LED lamps (3) are arranged in a circle, the outer side of the three LED lamps (3) is covered with a transparent hemispherical protective cover (22), the outer side of the protective cover (22) is provided with a protective net (23), the outer side of the protective net (23) is provided with a fixed pressing edge one (21), the outer side of the protective cover (22) is provided with a fixed pressing edge two (20), the top of the cover plate (4) is provided with a circular groove matched with the fixed pressing edge two (20), the fixed pressing edge one (21) fixes and presses the fixed pressing edge two (20) in the circular groove through bolts, the inner side of the lower part of the protective cover (22) is provided with a conical light reflecting cover (19), the inner side wall of the light reflecting cover (19) is coated with a light reflecting layer, the light reflecting cover (19) and the protective cover (22) are an integral structure, and the bottom of the light reflecting cover (19) is supported on the top of the cover plate (4).