Monitoring device for roof rock stratum displacement

Abstract

The invention discloses a roof rock stratum displacement monitoring device, and relates to the technical field of mine equipment, the roof rock stratum displacement monitoring device comprises a monitoring main body, the top of the monitoring main body is provided with an anchor rod, the monitoring main body is provided with a detection cylinder, and the outer surface of the detection cylinder is slidably connected with a measuring ring. The outer surface of the detection cylinder is cleaned through reciprocating rotation of the rotating ring and transverse reciprocating movement of the sliding ring, so that the cleaning angle and uniformity of the outer surface of the detection cylinder are ensured, the cleaning efficiency is improved, and the effect of multiple times of movable cleaning can be achieved through one-time movement of the fixed ring; smooth performance during sliding detection of the measuring ring is guaranteed, jamming phenomena are reduced, the abrasion degree between the measuring ring and the detection cylinder is reduced, the situation that the anchor cable and the measuring ring are broken due to too large resistance is avoided, and accuracy and reliability of detection of the monitoring body are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mine equipment, and specifically relates to a monitoring device for roof rock stratum displacement. Background Art

[0002] The roof rock stratum refers to the rock stratum above the coal seam. The safety of the roof is of utmost importance in the process of coal mining. During the coal mining process, due to the stress of the surrounding rock mass in the working face being in a dynamic change process, the displacement and deformation of the rock mass also change accordingly. Therefore, it is necessary to use a rock stratum displacement monitoring device to monitor the rock stratum in real time.

[0003] In the prior art, when using a monitoring device for roof rock stratum displacement, it is necessary to first insert and fix the anchor point at the top of the monitoring device into the rock stratum. When there is a separation layer within the anchoring range of the anchor bolt, the relative position between the measuring cylinder and the roof remains unchanged, but it will slide vertically downward, indicating the occurrence of a separation layer on the roof. And when sliding, it will press down the anchor cable, and the anchor cable will pull the measuring ring to slide on the measuring cylinder. Finally, the amount of separation layer is reflected by the distance of the displacement of the measuring ring.

[0004] Although the above technology can better solve the problem of monitoring rock stratum displacement, in the actual use process, due to the dusty environment in the mine tunnel, a large amount of dust is suspended in the air, and the suspended dust will adhere to the measuring cylinder. Therefore, the accumulated dust will increase the resistance when the measuring ring slides on the measuring cylinder, resulting in a jamming phenomenon when the measuring ring slides, increasing the wear speed of the device. At the same time, when the sliding resistance of the measuring ring increases, the resistance of the anchor cable pulling the measuring ring will also increase. Furthermore, during long-term use, the anchor cable will be subjected to continuous stress, increasing the risk of fracture at the connection between the anchor cable and the measuring cylinder, causing the measuring ring to no longer slide with the sinking of the rock stratum, resulting in the device losing its detection function and being unable to accurately monitor the displacement of the rock stratum, thus unable to timely discover and handle potential roof separation layer problems, thereby increasing the risk of safety accidents.

[0005] Therefore, the present invention proposes a monitoring device for roof rock stratum displacement to solve the above problems. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a monitoring device for roof rock stratum displacement to solve the problem that the suspended dust in the mine tunnel in the prior art will cause the measuring ring to jam, affecting the accuracy of the detection results.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a monitoring device for roof rock displacement, comprising a monitoring body, an anchor rod being provided on the top of the monitoring body, a detection tube being provided on the monitoring body, a measuring ring being slidably connected to the outer surface of the detection tube, two mounting top plates being fixedly connected to the outer side of the monitoring body, a monitoring protection mechanism and a monitoring guard mechanism being provided on the outer surface of the detection tube, respectively, and a monitoring stabilization mechanism being provided on the monitoring body and the top of the detection tube;

[0008] The monitoring and protection mechanism is used to scrape off dust on the outer surface of the detection tube, the monitoring and protection mechanism is used to discharge the scraped dust outwards, and the monitoring stabilization mechanism is used to increase the friction required for the sliding of the measuring ring during cleaning. The monitoring and protection mechanism and the monitoring stabilization mechanism are both driven by the monitoring and protection mechanism.

[0009] Preferably, the monitoring and protection mechanism includes two mounting plates, which are fixedly connected between the monitoring body and the detection cylinder. The outer sides of the mounting plates are slidably connected with sliding blocks, the tops of the sliding blocks are fixedly connected with fixed rings, the inner surface of the fixed ring is rotatably connected with a rotating ring, and one end of the rotating ring is slidably connected with a sliding ring. The fixed ring, rotating ring and sliding ring are all sleeved on the outer side of the detection cylinder, and the inner surfaces of the rotating ring and the sliding ring are provided with flexible brushes, which are in contact with the outer surface of the detection cylinder.

[0010] Preferably, a plurality of fixed columns are fixedly connected to the top of the mounting plate, a swing column is fixedly connected to the outer surface of the rotating ring, an arc-shaped guide rod is fixedly connected to the outer surface of the rotating ring, a fixed block is fixedly connected to the outer surface of the fixed ring, the arc-shaped guide rod is slidably connected to the fixed block, a reset spring is sleeved on the outer surface of the arc-shaped guide rod, and both ends of the reset spring are fixedly connected to the rotating ring and the fixed block respectively.

[0011] Preferably, a plurality of sliding rods are fixedly connected to the outer surface of the sliding ring, one end of the sliding rod is slidingly connected to the fixed ring, a plurality of guide columns are fixedly connected to the outer surface of the sliding ring, a plurality of guide blocks are fixedly connected to the side of the rotating ring close to the guide column, and a guide bevel groove is provided on the outer surface of the guide block, and the guide column is slidingly connected in the guide bevel groove.

[0012] Preferably, the monitoring and protection mechanism includes a plurality of mounting rods, each two of the mounting rods are fixedly connected to the outer surface of the fixed ring, a support plate is fixedly connected to one side of the mounting rod, two mounting grooves are provided on the support plate, impellers are rotatably connected in both mounting grooves, the impeller shaft ends are fixedly connected to pulleys, and a belt is connected for transmission between two adjacent pulleys.

[0013] Preferably, a rack is fixedly connected between the monitoring body and the detection cylinder, and a gear is fixedly connected to one end of the pulley adjacent to the rack, and the rack meshes with the opposite gear.

[0014] Preferably, the outer surfaces of the swing column rod and the fixed column rod are both arc-shaped surfaces, the fixed column rod is located on the moving track of the swing column rod, and the guiding inclined groove is inclined.

[0015] Preferably, the monitoring and stabilizing mechanism includes two mounting blocks, the two mounting blocks are fixedly connected to one side of the monitoring body, a guiding rod body is fixedly connected between the mounting block and the detection cylinder, a U-shaped block is fixedly connected to the outer surface of the fixed ring, and the U-shaped block is slidably connected to the guiding rod body.

[0016] Preferably, a triangular block is fixedly connected to one side of the U-shaped block, a sliding column body is slidably connected to the guiding rod body, the bottom end of the sliding column body penetrates through the guiding rod body, a pressing plate is fixedly connected to the bottom end of the sliding column body, and a compression spring is sleeved on the outer surface of the sliding column body.

[0017] Preferably, a rectangular through hole is formed in the sliding column body, the triangular block can be inserted into the rectangular through hole, a plurality of convex strips are fixedly connected to the bottom of the pressing plate, and an inclined surface is arranged on one side of the triangular block.

[0018] Compared with the prior art, the present invention provides a monitoring device for roof rock stratum displacement, which has the following beneficial effects:

[0019] 1. Through the setting of the monitoring and protecting mechanism, during the movement of the fixed ring, through the reciprocating rotation of the rotating ring and the lateral reciprocating movement of the sliding ring, the outer surface of the detection cylinder is cleaned, thereby ensuring the angle and uniformity of the cleaning of the outer surface of the detection cylinder, improving the cleaning efficiency, enabling the fixed ring to achieve the effect of multiple moving cleanings in one movement, ensuring the smoothness of the sliding detection of the measuring ring during subsequent sliding, reducing the occurrence of jamming phenomena, reducing the wear degree between the measuring ring and the detection cylinder, avoiding the situation that the anchor cable breaks due to too much resistance with the measuring ring, and improving the accuracy and reliability of the monitoring body during detection;

[0020] 2. Through the combined setting of the monitoring and protecting mechanism, the monitoring and protecting mechanism and the monitoring and stabilizing mechanism, it can simultaneously achieve the cleaning work and the stable work of the measuring ring through sliding, avoiding the phenomenon that the measuring ring slips erroneously due to the vibration generated during cleaning, saving additional operations, enabling the external driving push rod to complete multiple operations at one time, and improving the cleaning cost;

[0021] 3. By setting up the monitoring protection mechanism and the monitoring stability mechanism, the dust scraped by the rotating ring and the sliding ring can be discharged to the side of the fan impeller away from the detection cylinder, preventing the scraped dust from falling back onto the outer surface of the detection cylinder again, further improving the cleaning effect. The vibration generated during the movement of the monitoring protection mechanism and the monitoring stability mechanism drives the sliding of the measurement ring, increasing the stability of the measurement ring during the cleaning process and ensuring the accuracy of the displacement measurement of the measurement ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structure diagram of the present invention;

[0023] Figure 2 is the present invention Figure 1 partial three-dimensional structure diagram;

[0024] Figure 3 is a partial cross-sectional structure diagram at the detection cylinder of the present invention;

[0025] Figure 4 is the present invention Figure 3 enlarged structure diagram at position A;

[0026] Figure 5 is the present invention Figure 3 partial three-dimensional structure diagram;

[0027] Figure 6 is the present invention Figure 5 enlarged structure diagram at position B;

[0028] Figure 7 is a three-dimensional structure diagram of the outer surface of the detection cylinder of the present invention;

[0029] Figure 8 is a three-dimensional structure diagram at the triangular block and the rectangular through hole of the present invention.

[0030] In the figure:

[0031] 1. Monitoring main body; 11. Anchor rod; 12. Detection cylinder; 13. Measurement ring; 14. Installation top plate;

[0032] 201. Installation plate; 202. Sliding block; 203. Fixed ring; 204. Rotating ring; 205. Sliding ring; 206. Fixed column rod; 207. Swing column rod; 208. Arc-shaped guide rod; 209. Return spring; 210. Fixed block; 211. Sliding insertion rod; 212. Guide column; 213. Guide block; 214. Guide inclined groove;

[0033] 301. Installation rod; 302. Support plate; 303. Fan impeller; 304. Belt pulley; 305. Rack; 306. Gear;

[0034] 401. Installation block; 402. Guide rod body; 403. U-shaped block; 404. Pressing plate; 405. Triangular block; 406. Sliding column body; 407. Compression spring; 408. Rectangular through hole. Detailed implementation manners

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0037] Embodiments of the present invention

[0038] Please refer to Figures 1 to 8 as shown in

[0039] To solve the problems mentioned in the technical solutions, an embodiment of the present application provides a monitoring device for roof rock stratum displacement, including a monitoring main body 1. A bolt 11 is arranged on the top of the monitoring main body 1. A detection cylinder 12 is arranged on the monitoring main body 1. A measurement ring 13 is slidably connected to the outer surface of the detection cylinder 12. Two installation roof plates 14 are fixedly connected to the outside of the monitoring main body 1. A monitoring protection mechanism and a monitoring protection mechanism are respectively arranged on the outer surface of the detection cylinder 12. A monitoring stability mechanism is arranged between the monitoring main body 1 and the top of the detection cylinder 12;

[0040] The monitoring protection mechanism is used to scrape off the dust on the outer surface of the detection cylinder 12. The monitoring protection mechanism is used to discharge the scraped dust outwards. The monitoring stability mechanism is used to increase the friction force required for the measurement ring 13 to slide during cleaning. Both the monitoring protection mechanism and the monitoring stability mechanism are driven by the monitoring protection mechanism.

[0041] The monitoring and protection mechanism includes two mounting plates 201. The two mounting plates 201 are fixedly connected between the monitoring main body 1 and the detection cylinder 12. Sliding blocks 202 are slidably connected to the outer sides of the mounting plates 201. A fixed ring 203 is fixedly connected to the top of the sliding block 202. A rotating ring 204 is rotatably connected to the inner surface of the fixed ring 203. A sliding ring 205 is slidably connected to one end of the rotating ring 204. The fixed ring 203, the rotating ring 204, and the sliding ring 205 are all sleeved on the outer side of the detection cylinder 12. Flexible brushes are arranged on the inner surfaces of the rotating ring 204 and the sliding ring 205. The flexible brushes are in contact with the outer surface of the detection cylinder 12. A plurality of fixed column rods 206 are fixedly connected to the top of the mounting plate 201. A swinging column rod 207 is fixedly connected to the outer surface of the rotating ring 204. An arc-shaped guide rod 208 is fixedly connected to the outer surface of the rotating ring 204. A fixed block 210 is fixedly connected to the outer surface of the fixed ring 203. The arc-shaped guide rod 208 is slidably connected to the fixed block 210. A return spring 209 is sleeved on the outer surface of the arc-shaped guide rod 208. The two ends of the return spring 209 are respectively fixedly connected to the rotating ring 204 and the fixed block 210. A plurality of sliding insertion rods 211 are fixedly connected to the outer surface of the sliding ring 205. One end of the sliding insertion rod 211 is slidably connected to the fixed ring 203. A plurality of guide columns 212 are fixedly connected to the outer surface of the sliding ring 205. A plurality of guide blocks 213 are fixedly connected to the side of the rotating ring 204 close to the guide columns 212. Guide inclined grooves 214 are formed on the outer surfaces of the guide blocks 213. The guide columns 212 are slidably connected in the guide inclined grooves 214. The outer surfaces of the swinging column rod 207 and the fixed column rods 206 are both arc-shaped surfaces. The fixed column rods 206 are located on the moving track of the swinging column rod 207. The guide inclined grooves 214 are inclined;

[0042] The implementation of this embodiment ensures the angle and uniformity of the cleaning of the outer surface of the detection cylinder 12, improves the cleaning efficiency, enables the fixed ring 203 to achieve the effect of multiple moving cleanings with one movement, and ensures the smoothness of the sliding detection of the measuring ring 13 during the subsequent sliding of the measuring ring 13, reduces the occurrence of jamming phenomena, reduces the wear degree between the measuring ring 13 and the detection cylinder 12, avoids the situation that the anchor cable breaks with the measuring ring 13 due to too much resistance, and improves the accuracy and reliability of the detection of the monitoring main body 1.

[0043] Further embodiment: Please refer to Figures 1 to 8 as shown:

[0044] The monitoring and protection mechanism includes a plurality of mounting rods 301. Every two mounting rods 301 are fixedly connected to the outer surface of the fixed ring 203. One side of the mounting rod 301 is fixedly connected with a support plate 302. Two mounting grooves are provided on each support plate 302. A fan impeller 303 is rotatably connected in each of the two mounting grooves. A pulley 304 is fixedly connected to the shaft end of the fan impeller 303. A belt is drivingly connected between adjacent pulleys 304. A rack 305 is fixedly connected between the monitoring body 1 and the detection cylinder 12. A gear 306 is fixedly connected to one end of the pulley 304 adjacent to the rack 305. The rack 305 meshes with the opposite gear 306;

[0045] In the implementation of this embodiment, the dust scraped by the rotating ring 204 and the sliding ring 205 is discharged to the side of the fan impeller 303 away from the detection cylinder 12, avoiding the scraped dust from falling onto the outer surface of the detection cylinder 12 again, and further improving the cleaning effect.

[0046] Further embodiment: Please refer to Figures 1 to 8 as shown in

[0047] The monitoring stability mechanism includes two mounting blocks 401. The two mounting blocks 401 are fixedly connected to one side of the monitoring body 1. A guiding rod body 402 is fixedly connected between the mounting block 401 and the detection cylinder 12. A U-shaped block 403 is fixedly connected to the outer surface of the fixed ring 203. The U-shaped block 403 is slidably connected to the guiding rod body 402. A triangular block 405 is fixedly connected to one side of the U-shaped block 403. A sliding column body 406 is slidably connected to the guiding rod body 402. The bottom end of the sliding column body 406 penetrates through the guiding rod body 402. A pressing plate 404 is fixedly connected to the bottom end of the sliding column body 406. A compression spring 407 is sleeved on the outer surface of the sliding column body 406. A rectangular through hole 408 is provided on the sliding column body 406. The triangular block 405 can be inserted into the rectangular through hole 408. A plurality of protrusions are fixedly connected to the bottom of the pressing plate 404. One side of the triangular block 405 is provided with an inclined surface;

[0048] In the implementation of this embodiment, the phenomenon that the vibration generated when the monitoring protection mechanism and the monitoring and protection mechanism move drives the measuring ring 13 to slide can be avoided, increasing the stability of the measuring ring 13 during the cleaning process and ensuring the accuracy of the displacement measurement of the measuring ring 13;

[0049] The working principle of all the contents in the above embodiments is as follows:

[0050] In the initial state: When there is no subsidence phenomenon in the roof rock stratum, the measuring ring 13 is located at the end of the detection cylinder 12 away from the monitoring main body 1. At the same time, both the monitoring protection mechanism and the monitoring and protection mechanism are located at the end of the detection cylinder 12 close to the monitoring main body 1. The fixed column rod 206 and the swing column rod 207 are not in contact, the return spring 209 is in a normal state, and the triangular block 405 is inserted into the rectangular through hole 408. At this time, under the support of the triangular block 405, the compression spring 407 is in a compressed state, and the bottom of the pressure plate 404 does not contact the measuring ring 13. An external driving push rod can be installed on one side of the monitoring main body 1, and the output end of the external driving push rod is fixedly connected to one side of the sliding block 202.

[0051] The following is the working process and its beneficial effects of the monitoring protection mechanism:

[0052] After the monitoring main body 1 is used for an appropriate time, the external driving push rod can be started. The output end of the external driving push rod pushes the sliding block 202 to slide along the mounting plate 201. The sliding of the sliding block 202 drives the fixed ring 203, the rotating ring 204 and the sliding ring 205 to move simultaneously. When the rotating ring 204 slides, it can drive the swing column rod 207 to move towards the fixed column rod 206. Since the fixed column rod 206 is located on the moving track of the swing column rod 207, when the swing column rod 207 slides, the cylindrical arc surface of it will contact the cylindrical arc surface of the fixed column rod 206. Thus, through the extrusion of the arc surface of the fixed column rod 206, the swing column rod 207 drives the rotating ring 204 to rotate. Figure 3 For reference, the rotation direction is clockwise. At the same time, under the guidance of the arc-shaped guide rod 208 and the fixed block 210, the return spring 209 enters the stretched state. As the swing column rod 207 continues to move, the swing column rod 207 gradually moves away from the fixed column rod 206. Furthermore, the contact and the pushing and extrusion of the fixed column rod 206 on the swing column rod 207. At this time, under the resilience of the return spring 209, it drives the rotating ring 204 to slide back and reset again. Thus, through the setting of multiple fixed column rods 206 and the cooperation of the return spring 209, during the movement of the fixed ring 203 driving the rotating ring 204 and the sliding ring 205, the rotating ring 204 makes a reciprocating rotation. Thereby, through the reciprocating rotation movement and the linear movement of the flexible brush on the inner surface of the rotating ring 204, the cleaning of the outer surface of the detection cylinder 12 is realized;

[0053] Furthermore, when the rotating ring 204 makes a reciprocating rotation, Figure 4For reference, when the rotating ring 204 rotates in the forward direction, the rotating ring 204 drives the guide block 213 to rotate at the same time, thereby causing the guide inclined groove 214 to move. At this time, the guide column 212 drives the sliding ring 205 to move toward the rotating ring 204 through the push of the inclined surface of the guide inclined groove 214. When the rotating ring 204 rotates counterclockwise, the inclined surface of the guide inclined groove 214 pushes the guide column 212 to drive the sliding ring 205 to move away from the rotating ring 204. In the process of the reciprocating rotation of the rotating ring 204 to clean the outer surface of the detection cylinder 12, the sliding ring 205 realizes a horizontal reciprocating movement to clean the outer surface of the detection cylinder 12, thereby During the movement of the fixed ring 203, the outer surface of the detection cylinder 12 is cleaned by the reciprocating rotation of the rotating ring 204 and the lateral reciprocating movement of the sliding ring 205, thereby ensuring the angle and uniformity of the cleaning of the outer surface of the detection cylinder 12, improving the cleaning efficiency, and making the fixed ring 203 move once to achieve the effect of multiple cleaning movements. When the measuring ring 13 slides subsequently, the smoothness of the sliding detection of the measuring ring 13 is ensured, the occurrence of jamming is reduced, the degree of wear between the measuring ring 13 and the detection cylinder 12 is reduced, and the situation that the anchor cable is broken from the measuring ring 13 due to excessive resistance is avoided, thereby improving the accuracy and reliability of the detection of the monitoring body 1;

[0054] Please refer to the above working process Figures 1 to 8 .

[0055] The following is the working process of the monitoring and protection agency and its beneficial effects:

[0056] Furthermore, when the monitoring protection mechanism is in use, the movement of the fixed ring 203 will simultaneously drive the support plate 302 to move. Since the gear 306 and the rack 305 are in a meshing state, when the support plate 302 drives the gear 306 to move, under the action of the rack 305, the gear 306 rotates, and at the same time drives the bottom pulley 304 to rotate. At this time, under the transmission of the belt, the upper and lower pulleys 304 can be rotated at the same time, thereby causing the two impellers 303 to rotate at the same time. The airflow generated by the rotation of the impeller 303 can discharge the dust scraped by the rotating ring 204 and the sliding ring 205 to the side of the impeller 303 away from the detection cylinder 12, thereby preventing the scraped dust from falling onto the outer surface of the detection cylinder 12 again, thereby further improving the cleaning effect.

[0057] Please refer to the above working process Figures 1 to 8 .

[0058] The following is the working process of the monitoring and stabilization mechanism and its beneficial effects:

[0059] Furthermore, during the use of the monitoring and protection mechanism and the monitoring and safeguarding mechanism, the fixed ring 203 will move towards the measuring ring 13, thereby driving the U-shaped block 403 to move simultaneously. At this time, the triangular block 405 will displace away from the rectangular through-hole 408, and the triangular block 405 will disengage from the blockage of the insertion into the rectangular through-hole 408. At this time, under the resilience of the compression spring 407, the sliding cylinder 406 will be driven to move downward, so that the bottom end of the sliding cylinder 406 will push the pressing plate 404 downward, making the bottom of the pressing plate 404 abut against the measuring ring 13. At this time, the friction force during the sliding of the measuring ring 13 will be increased, thereby avoiding the phenomenon that the vibration generated during the movement of the monitoring and protection mechanism and the monitoring and safeguarding mechanism drives the measuring ring 13 to slide, increasing the stability of the measuring ring 13 during the cleaning process, and ensuring the accuracy of the displacement measurement of the measuring ring 13;

[0060] It should be noted that by pressing down the pressing plate 404, the resistance during the sliding of the measuring ring 13 is increased, thereby preventing the vibration generated during cleaning from causing the measuring ring 13 to accidentally slide. However, when the roof rock stratum sinks during the cleaning process, the anchor cable can still pull the measuring ring 13 to slide, so as not to affect the detection result of the measuring ring 13. And after the pressing plate 404 contacts the measuring ring 13, a part of the rectangular through-hole 408 will still be exposed on the guide rod 402, as Figure 8 shown. Furthermore, when the U-shaped block 403 drives the triangular block 405 to reset, the inclined surface of the triangular block 405 will push one side of the rectangular through-hole 408, so that the sliding cylinder 406 and the pushing pressing plate 404 will rise and reset again;

[0061] Please refer to the above working process Figures 1 to 8 。

[0062] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0063] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A monitoring device for roof rock stratum displacement, comprising a monitoring main body (1), a bolt (11) is arranged at the top of the monitoring main body (1), a detection cylinder (12) is arranged on the monitoring main body (1), a measuring ring (13) is slidably connected to the outer surface of the detection cylinder (12), and two mounting roof plates (14) are fixedly connected to the outside of the monitoring main body (1), characterized in that, A monitoring protection mechanism and a monitoring and protection mechanism are respectively arranged on the outer surface of the detection cylinder (12), and a monitoring and stabilizing mechanism is arranged between the monitoring main body (1) and the top of the detection cylinder (12); The monitoring protection mechanism is used to scrape off the dust on the outer surface of the detection cylinder (12), the monitoring and protection mechanism is used to discharge the scraped dust outwards, the monitoring and stabilizing mechanism is used to increase the friction force required for the sliding of the measuring ring (13) during cleaning, and both the monitoring and protection mechanism and the monitoring and stabilizing mechanism are driven by the monitoring protection mechanism.

2. The monitoring device for roof strata displacement according to claim 1, characterized in that: The monitoring protection mechanism includes two mounting plates (201), the two mounting plates (201) are fixedly connected between the monitoring main body (1) and the detection cylinder (12), sliding blocks (202) are slidably connected to the outer sides of the mounting plates (201), a fixed ring (203) is fixedly connected to the top of the sliding block (202), a rotating ring (204) is rotatably connected to the inner surface of the fixed ring (203), a sliding ring (205) is slidably connected to one end of the rotating ring (204), the fixed ring (203), the rotating ring (204) and the sliding ring (205) are all sleeved on the outer side of the detection cylinder (12), and flexible brushes are arranged on the inner surfaces of the rotating ring (204) and the sliding ring (205), and the flexible brushes are in contact with the outer surface of the detection cylinder (12).

3. The monitoring device for roof strata displacement according to claim 2, characterized in that: A plurality of fixed column rods (206) are fixedly connected to the top of the mounting plate (201), a swinging column rod (207) is fixedly connected to the outer surface of the rotating ring (204), an arc-shaped guiding rod (208) is fixedly connected to the outer surface of the rotating ring (204), a fixed block (210) is fixedly connected to the outer surface of the fixed ring (203), the arc-shaped guiding rod (208) is slidably connected to the fixed block (210), a return spring (209) is sleeved on the outer surface of the arc-shaped guiding rod (208), and both ends of the return spring (209) are fixedly connected to the rotating ring (204) and the fixed block (210) respectively.

4. The monitoring device for roof rock stratum displacement according to claim 3, wherein: A plurality of sliding insertion rods (211) are fixedly connected to the outer surface of the sliding ring (205), one end of the sliding insertion rod (211) is slidably connected to the fixed ring (203), a plurality of guiding columns (212) are fixedly connected to the outer surface of the sliding ring (205), a plurality of guiding blocks (213) are fixedly connected to one side of the rotating ring (204) close to the guiding column (212), and guiding inclined grooves (214) are formed on the outer surfaces of the guiding blocks (213), and the guiding columns (212) are slidably connected in the guiding inclined grooves (214).

5. The monitoring device for roof strata displacement according to claim 4, characterized in that: The outer surfaces of the swinging column rod (207) and the fixed column rod (206) are both arc-shaped surfaces, the fixed column rod (206) is located on the moving track of the swinging column rod (207), and the guiding inclined groove (214) is inclined.

6. The monitoring device for roof rock stratum displacement according to claim 1, characterized in that: The monitoring and protection mechanism includes a plurality of mounting rods (301). Every two of the mounting rods (301) are fixedly connected to the outer surface of a fixed ring (203). One side of each mounting rod (301) is fixedly connected to a support plate (302). Two mounting grooves are formed in each support plate (302). A fan impeller (303) is rotatably connected in each of the two mounting grooves. A pulley (304) is fixedly connected to the shaft end of each fan impeller (303). A belt is drivingly connected between adjacent pulleys (304).

7. The monitoring device for roof rock stratum displacement according to claim 6, characterized in that: A rack (305) is fixedly connected between the monitoring main body (1) and the detection cylinder (12). A gear (306) is fixedly connected to one end of the pulley (304) adjacent to the rack (305). The rack (305) meshes with the opposite gear (306).

8. The monitoring device for roof strata displacement according to claim 2, wherein: The monitoring stability mechanism includes two mounting blocks (401). The two mounting blocks (401) are fixedly connected to one side of the monitoring main body (1). A guiding rod body (402) is fixedly connected between the mounting block (401) and the detection cylinder (12). A U-shaped block (403) is fixedly connected to the outer surface of the fixed ring (203). The U-shaped block (403) is slidably connected to the guiding rod body (402).

9. The monitoring device for roof strata displacement according to claim 8, wherein: A triangular block (405) is fixedly connected to one side of the U-shaped block (403). A sliding column body (406) is slidably connected to the guiding rod body (402). The bottom end of the sliding column body (406) penetrates through the guiding rod body (402). A pressing plate (404) is fixedly connected to the bottom end of the sliding column body (406). A compression spring (407) is sleeved on the outer surface of the sliding column body (406).

10. The monitoring device for roof strata displacement according to claim 9, characterized in that: A rectangular through hole (408) is formed in the sliding column body (406). The triangular block (405) can be inserted into the rectangular through hole (408). A plurality of protrusions are fixedly connected to the bottom of the pressing plate (404). An inclined surface is arranged on one side of the triangular block (405).

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