A roof stability monitoring device for a mining face under an overlying goaf

Abstract

The utility model discloses a kind of overlying goaf lower mining working face roof stability monitoring devices, including base, the side of the base is connected with multiple circumferential settings positioning rod of sliding, the side of the base is fixedly connected with support pipe, the one end of the support pipe is rotatably connected with adjusting nut, adjusting screw rod is arranged in the support pipe, adjusting screw rod is connected with adjusting nut by penetrating thread, the one end of adjusting screw rod is fixedly connected with support frame.The utility model can realize the adaptive contact of contact plate and roof by adjusting screw rod to adjust the use height of contact plate, the rotation angle adjustment of rotating base and rotating frame, cooperate multiple infrared sensors and pressure sensor respectively to the position offset of roof, the pressure variation of contact plate is monitored, can improve the applicability of monitoring equipment, and ensure the stability of monitoring process and data certainty through multipoint monitoring mode.

Description

Technical Field

[0001] This utility model relates to the field of mine safety monitoring technology, and in particular to a device for monitoring the stability of the roof of a mining face under an overlying goaf. Background Technology

[0002] The roof stability monitoring device for mining faces under overlying goaf areas is used to monitor the stability of the roof of mining faces under the influence of overlying goaf areas in real time and accurately, effectively preventing roof accidents and ensuring the safety of mining operations.

[0003] In underground mining operations, the overlying goaf has a significant impact on the stability of the roof of the underlying mining face. Existing monitoring devices have many problems: 1. Unreasonable layout of monitoring points: Traditional monitoring devices lack systematic and scientific selection of monitoring points, often resulting in the lack of monitoring in some key areas, failing to fully reflect the overall stability of the roof, and increasing the risk of roof accidents; 2. Unreliable sensor installation and fixing: The complex mining environment and factors such as vibration and humidity can easily cause sensors to loosen or be damaged, affecting data accuracy and device stability. Existing installation and fixing methods are difficult to meet the requirements of long-term stable monitoring. 3. Data transmission lines are easily damaged: Rockfalls and mechanical collisions during mining operations can easily damage data transmission lines, causing data transmission interruptions and preventing monitoring work from proceeding normally. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stability monitoring device for the roof of a mining face in an overlying goaf.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A device for monitoring the stability of the roof of a mining face under an overlying goaf includes a base. Multiple circumferentially arranged positioning rods are slidably connected to one side of the base. A support pipe is fixedly connected to one side of the base. An adjusting nut is rotatably connected to one end of the support pipe. An adjusting screw passes through the support pipe and is threadedly connected to the adjusting nut. A support frame is fixedly connected to one end of the adjusting screw. A rotating base is fixedly connected to one side of the support frame. A rotating frame is rotatably connected to the rotating base. A connecting frame is fixedly connected to one side of the rotating frame. A contact plate is provided on one side of the connecting frame. A support mechanism for pneumatically supporting the rotating frame is provided on one side of the support frame. A connecting mechanism for connecting the contact plate is provided between the connecting frame and the contact plate. Multiple infrared sensors are provided on one side of the contact plate.

[0006] Preferably, the support mechanism includes a rotating groove formed on one side of the support frame and the connecting frame, and a cylinder is rotatably connected in the rotating groove.

[0007] Preferably, the connecting mechanism includes multiple guide rods fixedly connected to one side of the contact plate, the guide rods passing through the sliding connecting frame, the side wall of the guide rods being fitted with contact springs, the two ends of the contact springs being fixedly connected to the guide rods and the connecting frame respectively, and a pressure sensor being provided at one end of both the cylinder and the guide rods.

[0008] Preferably, a limiting block is fixedly connected to the side wall of the guide rod, and the limiting block cooperates with the connecting frame.

[0009] Preferably, a combination plate is fixedly connected to one side of the contact plate, and a combination groove is provided on the side of the contact plate away from the combination plate, with adjacent combination plates rotatably connected in the combination groove.

[0010] Preferably, the side wall of the support tube is provided with a wire harness groove, a wire harness frame is slidably connected in the wire harness groove, two symmetrically arranged sliding grooves are provided in the inner wall of the wire harness groove, and sliding blocks are fixedly connected to both sides of the wire harness frame, and the sliding blocks are slidably connected in the sliding groove.

[0011] Compared with the prior art, the advantages of this utility model are as follows: 1. This utility model is equipped with a support tube, adjusting screw, support frame, rotating base, rotating frame, connecting frame, and contact plate. By adjusting the height of the contact plate and the rotation angle of the rotating base and rotating frame through the adjusting screw, adaptive contact between the contact plate and the top plate can be achieved. With the help of multiple infrared sensors and pressure sensors, the positional deviation of the top plate and the pressure change of the contact plate can be monitored. This can improve the applicability of the monitoring equipment while ensuring the stability and data certainty of the monitoring process through multi-point monitoring.

[0012] 2. This utility model is equipped with a base, positioning rod, wire harness groove, wire harness bracket, sliding block and sliding groove and other structures. By providing wire harness groove and wire harness bracket on the side wall of the support tube, the wire harness bracket with elastic structure cooperates with the wire harness groove to make contact positioning of wire harnesses such as infrared sensors and pressure sensors, avoiding the problem of wire harness damage during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a stability monitoring device for the roof of a mining face under an overlying goaf, as proposed in this utility model. Figure 2 This is a schematic diagram of the bottom structure of the contact plate of a stability monitoring device for the roof of a mining face under an overlying goaf, as proposed in this utility model. Figure 3This is a side view of a stability monitoring device for the roof of a mining face under an overlying goaf, as proposed in this utility model. Figure 4 This is a schematic diagram of the support frame structure for a stability monitoring device for the roof of a mining face under an overlying goaf, as proposed in this utility model.

[0014] In the diagram: 1. Base, 2. Positioning rod, 3. Support tube, 4. Adjusting nut, 5. Adjusting screw, 6. Support frame, 7. Rotating groove, 8. Cylinder, 9. Rotating base, 10. Rotating frame, 11. Connecting frame, 12. Contact plate, 13. Guide rod, 14. Limiting block, 15. Contact spring, 16. Pressure sensor, 17. Combination plate, 18. Combination groove, 19. Cable harness groove, 20. Cable harness frame, 21. Infrared sensor. Detailed Implementation

[0015] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] Reference Figure 1-4 A stability monitoring device for the roof of a mining face under an overlying goaf includes a base 1. A plurality of circumferentially arranged positioning rods 2 are slidably connected through one side of the base 1. A support pipe 3 is fixedly connected to one side of the base 1. A wire harness groove 19 is opened on the side wall of the support pipe 3. A wire harness frame 20 is slidably connected in the wire harness groove 19. Two symmetrically arranged sliding grooves are opened on the inner wall of the wire harness groove 19. Sliding blocks are fixedly connected to both sides of the wire harness frame 20. The sliding blocks are slidably connected in the sliding grooves. An adjusting nut 4 is rotatably connected to one end of the support pipe 3. An adjusting screw 5 is threaded through the support pipe 3 and threadedly connected to the adjusting nut 4. One end of the adjusting screw 5 is fixedly connected to a support frame 6. A rotating base 9 is fixedly connected to one side of the support frame 6. A rotating frame 10 is rotatably connected inside the rotating base 9. A connecting frame 11 is fixedly connected to one side of the rotating frame 10. A contact plate 12 is provided on one side of the connecting frame 11. A combination plate 17 is fixedly connected to one side of the contact plate 12. A combination groove 18 is opened on the side of the contact plate 12 away from the combination plate 17. Adjacent combination plates 17 are rotatably connected in the combination groove 18. A support mechanism for pneumatically supporting the rotating frame 10 is provided on one side of the support frame 6. The support mechanism includes a rotating groove 7 opened on one side of the support frame 6 and the connecting frame 11, and a cylinder 8 is rotatably connected in the rotating groove 7.

[0017] A connecting mechanism for connecting the contact plate 12 is provided between the connecting frame 11 and the contact plate 12. The connecting mechanism includes a plurality of guide rods 13 fixedly connected to one side of the contact plate 12. A limit block 14 is fixedly connected to the side wall of the guide rod 13, and the limit block 14 cooperates with the connecting frame 11. The guide rod 13 passes through the sliding connection frame 11. A contact spring 15 is sleeved on the side wall of the guide rod 13. The two ends of the contact spring 15 are respectively fixedly connected to the guide rod 13 and the connection frame 11. A pressure sensor 16 is provided at one end of both the cylinder 8 and the guide rod 13. Multiple infrared sensors 21 are provided on one side of the contact plate 12.

[0018] When using this utility model, such as Figure 1-4 As shown, during use, the base 1 is first placed below the monitoring position of the top plate. Multiple positioning rods 2 are then inserted into the ground to provide positioning and support for the base 1. Subsequently, the adjusting nut 4, which is threadedly connected to the adjusting screw 5, is rotated according to the height of the top plate. This allows for height adjustment of the support frame 6 and contact plate 12, enabling adaptability to top plates at different usage heights. Simultaneously, the two ends of the cylinder 8 are rotatably connected to the rotating grooves 7 located on the connecting plate 11 and the support frame 6. The extension and retraction of the cylinder 8 causes the rotating frame 10 to rotate within the rotating base 9. Figure 1 The aforementioned adjustment of the operating angles of the connecting frame 11 and the contact plate 12 is performed. During this process, after the position of the contact plate 12 is determined, multiple infrared sensors 21 are used for positioning. These infrared sensors have a reflection and reception function; when the contact plate 12 shifts, the received signal of the infrared sensors 21 shifts, serving as a monitoring function for the shift of the contact plate 12. Multiple guide rods 13 located on the connecting frame 11 provide support for the contact plate 12. Simultaneously, when the traction force of the contact spring 15 on it changes, the pressure sensor 16 can detect the pressure change. As a monitoring device for pressure changes on the contact plate 12, i.e., pressure changes on the top plate, the contact plate 12 can be combined and installed by the combination plates 17 on both sides and the combination groove 18 during use. It can be connected and placed in conjunction with the distribution of the top plate to form an overall monitoring effect composed of local combinations. When installing, the wire harness is placed in the wire harness groove 19. Then, the wire harness frame 20 is installed in the wire harness groove 19 by sliding limit through the sliding block and sliding groove. Through the elastic structure of the wire harness frame 20, the wire harness can be contacted and pressed tightly, thereby ensuring the stability of the wire harness during use and providing a protective effect for the wire harness.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A stability monitoring device for the roof of a mining face under an overlying goaf, comprising a base (1), characterized in that, A plurality of circumferentially arranged positioning rods (2) are slidably connected through one side of the base (1). A support tube (3) is fixedly connected to one side of the base (1). An adjusting nut (4) is rotatably connected to one end of the support tube (3). An adjusting screw (5) is provided through the support tube (3). The adjusting screw (5) is threadedly connected to the adjusting nut (4). A support frame (6) is fixedly connected to one end of the adjusting screw (5). A rotating base (9) is fixedly connected to one side of the support frame (6). A rotating frame (10) is rotatably connected to the rotating base (9). A connecting frame (11) is fixedly connected to one side of the rotating frame (10). A contact plate (12) is provided on one side of the connecting frame (11). A support mechanism for pneumatically supporting the rotating frame (10) is provided on one side of the support frame (6). A connecting mechanism for connecting the contact plate (12) is provided between the connecting frame (11) and the contact plate (12). A plurality of infrared sensors (21) are provided on one side of the contact plate (12).

2. The roof stability monitoring device for a mining face under an overlying goaf as described in claim 1, characterized in that, The support mechanism includes a rotating groove (7) on one side of the support frame (6) and the connecting frame (11), and a cylinder (8) is rotatably connected in the rotating groove (7).

3. The roof stability monitoring device for a mining face under an overlying goaf as described in claim 2, characterized in that, The connecting mechanism includes multiple guide rods (13) fixedly connected to one side of the contact plate (12). The guide rods (13) pass through the sliding connecting frame (11). The side wall of the guide rods (13) is fitted with contact springs (15). The two ends of the contact springs (15) are fixedly connected to the guide rods (13) and the connecting frame (11) respectively. One end of the cylinder (8) and the guide rods (13) is provided with pressure sensors (16).

4. The roof stability monitoring device for a mining face under an overlying goaf as described in claim 3, characterized in that, The guide rod (13) is fixedly connected to a limiting block (14), which cooperates with the connecting frame (11).

5. A roof stability monitoring device for a mining face under an overlying goaf as described in claim 4, characterized in that, A combination plate (17) is fixedly connected to one side of the contact plate (12). A combination groove (18) is provided on the side of the contact plate (12) away from the combination plate (17). The adjacent combination plates (17) are rotatably connected in the combination groove (18).

6. The roof stability monitoring device for a mining face under an overlying goaf as described in claim 5, characterized in that, The side wall of the support tube (3) is provided with a wire harness groove (19), and a wire harness frame (20) is slidably connected in the wire harness groove (19). The inner wall of the wire harness groove (19) is provided with two symmetrically arranged sliding grooves. Sliding blocks are fixedly connected to both sides of the wire harness frame (20), and the sliding blocks are slidably connected in the sliding grooves.

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