Roof monitoring device suitable for gob-side entry retaining

Abstract

The utility model relates to a roof monitoring device suitable for gob-side entry retaining, which comprises a monitoring host and a monitoring host body, the monitoring host further comprises a monitoring cylinder and a monitoring host body, the monitoring cylinder is fixedly mounted on the surface of the monitoring host body, and a host mounting terminal is fixedly mounted at the upper part of the monitoring host body; a monitoring ball is arranged close to the end of a beam rod of the monitoring measuring rod, a magnet is arranged in the monitoring ball, a plastic shell wraps the magnet, the other end of the beam rod is fixedly connected with a beam rod base, and a measuring rod installation terminal is fixedly installed on the upper portion of the beam rod base. According to the utility model, the monitoring measuring rod and the monitoring host are directly arranged on the two anchor rods or anchor cables respectively, and the displacement state of the top plate can be monitored in time and early warning can be given out in time by measuring the lifting between the two anchor rods or anchor cables; installation can be simply and conveniently carried out by means of the measuring rod installation terminal and the host installation terminal, and the dismounting difficulty is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety technology, specifically to a roof monitoring device applicable to roadway retention along the goaf. Background Technology

[0002] "Goaf support" refers to setting up support structures along the edge of the goaf behind the coal mining face, while "retained roadway" refers to retaining the original intake roadway and using it directly as the return airway for the next working face. In goaf retained roadways, portal frames and concrete walls are required for support. As the fully mechanized mining machine gradually advances, some portal frames need to be removed, which creates an unsafe area in the roadway with insufficient support. This part is mainly supported by pre-installed anchor bolts and cables. However, the anchor bolts and cables are installed in the roof. Part of the roof will gradually sink or even collapse under pressure and stress, which causes serious safety hazards.

[0003] Currently, a utility model patent with publication number CN206556632U discloses a measuring device for the bearing pressure and deformation of the roadway roof. It includes a hinged rod, a pressure sensor, and a deformation measuring instrument. The hinged rod is fixed to the roadway roof end to end, the pressure sensor is fixed between two hinged rods, and the two ends of a support rod are fixed to the hinged rod. The deformation measuring instrument is fixed to the roadway roof through the support rod. The existing measuring device cannot effectively measure the surrounding rock pressure and deformation of the roadway in real time, which has a significant impact on the maintenance of deep mine roadways.

[0004] As can be seen from the above-disclosed technical content, as prior art, the utility model with announcement number CN206556632U fixes multiple hinged rods on the roadway cross-section to be measured, fixes both ends of the support rod to the hinged rods, and fixes the pressure sensor and deformation measuring instrument to the roadway cross-section, the hinged rods, and the support rods. At least one deformation measuring instrument and pressure sensor are fixed on each hinged rod, so that multiple points can be measured simultaneously. It has the advantage of rapid detection. At the same time, the measuring instrument does not require manual operation, avoiding measurement errors and improving measurement accuracy. However, this patent involves many and complex components, and the installation is relatively cumbersome, making it inconvenient to use. Utility Model Content

[0005] In view of the problems existing in the prior art, this utility model provides a roof monitoring device suitable for roadway retention along the goaf. It can be installed simply and conveniently, can monitor the roof displacement status in a timely manner, and issue early warnings in a timely manner.

[0006] To achieve the above objectives, this utility model provides a roof monitoring device suitable for roadway siding along the goaf, comprising a monitoring host and a monitoring host body. The monitoring host further includes a monitoring cylinder and the monitoring host body. The monitoring cylinder is fixedly installed on the surface of the monitoring host body, and a host mounting terminal is fixedly installed on the upper part of the monitoring host body. A monitoring ball is set near the end of the beam of the monitoring rod, and the monitoring ball has a built-in magnet. The magnet is wrapped with a plastic shell. The other end of the beam is fixedly connected to the beam base, and the measuring rod mounting terminal is fixedly installed on the upper part of the beam base. The end of the beam with the monitoring ball is inserted into the monitoring cylinder, and a gap is left between the inner side of the monitoring cylinder and the beam and the monitoring ball. A Hall sensor is installed in a groove on the surface of the monitoring cavity of the monitoring cylinder.

[0007] In addition, the roof monitoring device for goaf retention proposed in the above embodiments of this utility model may also have the following additional technical features:

[0008] As a further improvement of this utility model, the monitoring host has a built-in wireless network module, a controller, and a battery pack.

[0009] As a further improvement of this utility model, the monitoring host is provided with a pre-set network cable interface and a power interface.

[0010] As a further improvement of this utility model, a diode supplementary light is installed in a groove in the middle of the monitoring cavity, and camera mounting slots are opened on both sides of the monitoring cavity of the diode supplementary light. The camera built into the camera mounting slot is tilted at 45 degrees toward the middle of the monitoring cavity.

[0011] As a further improvement of this utility model, the inner surface of the monitoring cavity is provided with scale lines, and the surface of the monitoring ball is provided with scale lines.

[0012] As a further improvement of this utility model, the beam is an elastic rod.

[0013] By means of the above solution, this utility model has at least the following advantages: by directly mounting the monitoring rod and the monitoring host on two anchor rods or anchor cables respectively, the displacement status of the top plate can be monitored in a timely manner by measuring the rise and fall between the two anchor rods or anchor cables, and an early warning can be issued in a timely manner. At the same time, the installation can be simple and convenient with the help of the mounting terminals of the measuring rod and the mounting terminals of the host, which effectively reduces the difficulty of disassembly and assembly. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is a three-dimensional view of the monitoring rod of this utility model;

[0016] Figure 3 This is a three-dimensional view of the monitoring host of this utility model;

[0017] Figure 4 This is a structural diagram of the monitoring cavity with a Hall sensor installed in this utility model;

[0018] Figure 5 This is a structural diagram of the camera mounting slot in the monitoring cavity of this utility model;

[0019] In the diagram: 1. Monitoring rod, 11. Measuring rod mounting terminal, 12. Beam rod base, 13. Beam rod, 14. Monitoring ball, 2. Monitoring host, 21. Host mounting terminal, 22. Monitoring cylinder, 221. Hall sensor, 222. Monitoring cavity, 223. Camera mounting slot, 224. Diode fill light, 23. Monitoring host body. Detailed Implementation

[0020] The following description, in conjunction with the accompanying drawings, describes the roof monitoring device of this utility model applicable to goaf-side roadway retention.

[0021] In Embodiment 1 of this application, as Figures 1 to 4 As shown, a roof monitoring device suitable for goaf-side roadway retention includes a monitoring rod 1 and a monitoring host body 23. The monitoring host 2 further includes a monitoring cylinder 22 and the monitoring host body 23. The monitoring cylinder 22 is fixedly mounted on the surface of the monitoring host body 23, and a host mounting terminal 21 is fixedly mounted on the upper part of the monitoring host body 23. A monitoring ball 14 is set near the end of the beam 13 of the monitoring rod 1. The monitoring ball 14 has a built-in magnet, and the magnet is covered with a plastic shell. The other end of the beam 13 is fixedly connected to the beam 12, and a measuring rod mounting terminal 11 is fixedly mounted on the upper part of the beam 12. One end of the beam 13 with the monitoring ball 14 is inserted into the monitoring cylinder 22, and a gap is left between the inner side of the monitoring cylinder 22 and the beam 13 and the monitoring ball 14. A groove is opened on the surface of the monitoring cavity 222 of the monitoring cylinder 22 to install a Hall sensor 221. The monitoring host 2 has a built-in wireless network module, a controller, and a battery pack. The monitoring host 2 has a pre-set network cable interface and a power interface. The main unit mounting terminal 21 includes two clamping plates and a clamping ring for fixing. The clamping ring is threaded onto the outside of the clamping plates and can also be tightened with screws. The two clamping plates clamp the exposed end of the anchor rod or anchor cable to fix the equipment. The main unit mounting terminal 21 can also be connected to the beam base 12 by threads or clips, and then the top of the main unit mounting terminal 21 is bound to the exposed end of the anchor rod or anchor cable with tape. The measuring rod mounting terminal 11 has the same structure as the main unit mounting terminal 21.

[0022] A utility model patent (CN206556632U) discloses a measuring device for the bearing capacity and deformation of roadway roof. This device involves fixing multiple hinged rods to the roadway cross-section to be measured, fixing both ends of a support rod to the hinged rods, and fixing a pressure sensor and a deformation measuring instrument to the roadway cross-section, hinged rods, and support rods. Each hinged rod has at least one deformation measuring instrument and one pressure sensor, enabling simultaneous measurement of multiple points. This provides the advantage of rapid detection, and the measuring instruments do not require manual operation, avoiding measurement errors and improving measurement accuracy. However, this patent involves many complex components, making installation cumbersome and inconvenient to use. In contrast, this invention has a simple overall structure. The monitoring measuring rod 1 and the monitoring host 2 can be directly installed on two anchor rods or anchor cables via the measuring rod mounting terminal 11 and the host mounting terminal 21, effectively reducing installation difficulty.

[0023] This second embodiment is basically the same in structure as the first embodiment, the difference being that, as Figure 5 As shown, a diode supplementary light 224 is installed in a groove in the center of the monitoring cavity 222. Camera mounting slots 223 are opened on both sides of the diode supplementary light 224 in the monitoring cavity 222. The camera built into the camera mounting slot 223 is tilted at a 45-degree angle towards the center of the monitoring cavity 222. The inner surface of the monitoring cavity 222 is provided with scale lines, and the surface of the monitoring ball 14 is also provided with scale lines. The device can observe the scale lines on the surface of the monitoring ball 14 and the inner surface of the monitoring cavity 222 at intervals through the camera built into the camera mounting slot 223, and observe the changes in the relative position between the monitoring ball 14 and the monitoring cavity 222. This allows for the calculation of whether there is a height difference or displacement between the monitoring rod 1 and the monitoring host 2, thereby timely understanding of the changes in the top plate. If continuous displacement of the top plate occurs, anchor bolts or anchor cables, or other support measures, can be installed in a timely manner.

[0024] To further optimize the working efficiency of this application and adapt to the complex underground environment, the beam rod 13 is an elastic rod, and the beam rod 13 is connected to the beam rod base 12 by threads. To further expand the warning range, a shield can be hung on the beam rod 13, with the center of the shield connected to the beam rod 13 and the sides or four corners of the shield hanging on the roof. When there is falling debris on the roof, it can be detected in time. When the debris falls on the shield, its own weight will be transmitted to the beam rod 13. Since the beam rod 13 itself is elastic, it can drive the monitoring ball 14 to change position, thereby enabling the monitoring host 2 to detect the change.

[0025] When in use, install the roof monitoring device suitable for roadways with goaf entry, and set up either a wireless or wired connection. The device is then ready for use. For wireless connection, communication is conducted using the mine's wireless communication base station; for wired connection, communication is directly conducted via a switch installed within the mine.

[0026] When this utility model is used, its specific operation is as follows:

[0027] During installation, the measuring rod mounting terminal 11 and the main unit mounting terminal 21 are respectively installed on the anchor rod or anchor cable, with the distance between the measuring rod mounting terminal 11 and the main unit mounting terminal 21 controlled between five and nine meters. Next, the beam base 12 and the monitoring main unit 2 are installed. The beam 13 passes through the monitoring cylinder 22 and is screwed to the beam base 12, ensuring that the monitoring ball 14 is located in the middle section of the monitoring cylinder 22. The monitoring ball 14 is fitted onto the beam 13 and secured with screws. Finally, connect the corresponding wiring equipment for operation.

[0028] During operation, as the roof changes position, the anchor bolts or cables will also descend. Because the distance between the monitoring rod 1 and the monitoring host 2 is sufficient, the descent speeds of the two anchor bolts or cables differ. Displacement of either the monitoring rod 1 or the monitoring host 2 will cause a change in the position of the monitoring ball 14 within the monitoring cylinder 22. The Hall sensor 221 detects the angle of change in the magnetic field of the magnet inside the monitoring ball 14 to determine the height of the roof descent. If the roof continues to descend beyond the safety threshold, the dispatch room personnel can choose to reinforce the support or evacuate personnel as needed.

[0029] In summary, the roof monitoring device of this utility model embodiment, applicable to roadway siding, can monitor the roof displacement status in a timely manner and issue early warnings by directly mounting the monitoring measuring rod 1 and the monitoring host 2 on two anchor rods or anchor cables respectively, and measuring the rise and fall between the two anchor rods or anchor cables. At the same time, the installation can be simple and convenient with the help of the measuring rod mounting terminal 11 and the host mounting terminal 21, which effectively reduces the difficulty of disassembly and assembly.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A roof monitoring device suitable for roadway retention along the goaf, comprising a monitoring host (2), characterized in that, The monitoring host (2) also includes a monitoring cylinder (22) and a monitoring host body (23). The monitoring cylinder (22) is fixedly installed on the surface of the monitoring host body (23), and the host mounting terminal (21) is fixedly installed on the upper part of the monitoring host body (23). A monitoring ball (14) is set near the end of the beam rod (13) of the monitoring rod (1). The monitoring ball (14) has a built-in magnet, and the magnet is wrapped with a plastic shell. The other end of the beam rod (13) is fixedly connected to the beam rod base (12), and the measuring rod mounting terminal (11) is fixedly installed on the upper part of the beam rod base (12). The end of the beam rod (13) with the monitoring ball (14) is inserted into the monitoring cylinder (22), and a gap is left between the inner side of the monitoring cylinder (22) and the beam rod (13) and the monitoring ball (14). A groove is opened on the surface of the monitoring cavity (222) of the monitoring cylinder (22) to install the Hall sensor (221).

2. The roof monitoring device for goaf-side roadway retention according to claim 1, characterized in that, The monitoring host (2) has a built-in wireless network module, a controller and a battery pack.

3. A roof monitoring device suitable for roadway retention along the goaf, as described in claim 2, characterized in that, The monitoring host (2) has an external preset network cable interface and power interface.

4. A roof monitoring device suitable for roadway retention along the goaf according to claim 1, characterized in that, A diode fill light (224) is installed in a groove in the middle of the monitoring cavity (222). Camera mounting slots (223) are opened on both sides of the monitoring cavity (222) of the diode fill light (224). The camera built into the camera mounting slot (223) is tilted at 45 degrees toward the middle of the monitoring cavity (222).

5. A roof monitoring device suitable for roadway retention along the goaf, as described in claim 4, characterized in that, The inner surface of the monitoring cavity (222) is provided with scale lines, and the surface of the monitoring ball (14) is provided with scale lines.

6. A roof monitoring device suitable for roadway retention along the goaf, as described in claim 1, characterized in that, The beam (13) is an elastic rod.

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