A sensor and a deep displacement monitoring device for geological hazards using the sensor.

Abstract

This invention discloses a sensor and a geological hazard deep displacement monitoring device using the sensor, relating to the field of displacement monitoring technology. The sensor includes a mechanical monitoring sensor and a tilting module connected to both the upper and lower sides of the mechanical monitoring sensor. The tilting module monitors deep displacement of geological hazards by flipping, and the monitoring information from the tilting module is integrated and transmitted / received by the mechanical monitoring sensor. The sensor and the geological hazard deep displacement monitoring device using it utilize a deployment and retraction platform for the transmission cable and monitoring instrument. A positioning rotating cylinder and an extended contact rod are positioned outside the tilting hole, and an entry cone enters the ground for stability. During deployment and retraction, a dust removal roller cleans away dust and soil, improving the stability and data accuracy of the transmission cable and monitoring instrument during deployment and monitoring.

Description

Technical Field

[0001] This invention relates to the field of displacement monitoring technology, specifically to a sensor and a deep displacement monitoring device for geological disasters using the sensor. Background Technology

[0002] Deep displacement in geological disasters refers to the displacement and deformation of rock and soil masses at a certain depth (usually several meters to tens of meters) below the surface. It generally refers to the hidden displacement that occurs inside geological disaster bodies such as landslides and collapses. It needs to be detected by professional equipment such as monitoring borehole inclinometers equipped with mechanical detection sensors and fiber optic monitoring, which complements surface displacement monitoring. By placing the inclinometer at different depths in the inclinometer hole, the data of the offset of the X-axis and Y-axis are monitored. The inclinometer is manually placed into the inclinometer hole after being connected to the transmission wire.

[0003] The invention disclosed in CN214039949U is a sensor and a geological disaster deep displacement monitoring device using the sensor. By setting up an inclinometer tube and a sealing plug, the bottom of the inclinometer tube can be sealed to prevent foreign objects from entering. By setting up a base plate, a fixed column, a groove, a return spring, a movable column, a top plate and a displacement monitor, the displacement monitor can be made shockproof. By setting up a protective ring, it is easy to prevent the inner wall of the inclinometer tube from bumping into the displacement monitor and affecting its use. Thus, the sensor and the geological disaster deep displacement monitoring device using the sensor can be protected.

[0004] The utility model patent with announcement number CN215909833U discloses a sensor and a geological disaster deep displacement monitoring device using the sensor. Through four upper cleaning wheels and four lower cleaning wheels, regardless of whether the inclinometer moves upward or downward within the inclinometer tube, debris such as soil clods can be cleared from the slide rail, allowing the four upper and four lower traveling wheels to move smoothly within the slide rail and ensuring the accuracy of the monitoring data. Rotating the roller can drive the inclinometer upward from the bottom of the inclinometer tube. Multiple traveling drive motors can provide power to the inclinometer, preventing the inclinometer from failing to descend to the bottom of the inclinometer tube due to tilting.

[0005] However, the aforementioned sensors and the geological disaster deep displacement monitoring devices using these sensors still have the following problems in actual use: Although the monitoring devices are deployed and detected by the corresponding support, such auxiliary mechanisms can only maintain a certain stability relative to the ground. However, they cannot guarantee the accuracy relative to the inclinometer hole during the displacement process. This can easily cause friction between the transmission cable connected to the monitoring device and the detection hole. At the same time, some monitoring holes contain mud and sand, which stick to the transmission cable and are then rolled up, leading to continuous squeezing and friction that causes damage.

[0006] Therefore, we propose a sensor and a geological disaster deep displacement monitoring device using the sensor, in order to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a sensor and a geological disaster deep displacement monitoring device using the sensor. This invention addresses the problem that existing monitoring devices are deployed and retracted using corresponding supports, but such auxiliary mechanisms can only maintain a certain stability relative to the ground. However, during the displacement process, they cannot guarantee the accuracy relative to the inclinometer hole. This can easily cause friction between the transmission cable connected to the monitoring device and the detection hole. In addition, some monitoring holes contain mud and sand, which stick to the transmission cable and are then rolled up, leading to continuous compression and friction that causes damage.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a sensor, including a mechanical monitoring sensor, and a monitoring instrument for mounting the mechanical monitoring sensor;

[0009] It also includes: inclination measurement modules are provided on both the upper and lower sides of the mechanical monitoring sensor, and the inclination measurement modules are interconnected with the mechanical monitoring sensor;

[0010] The inclinometer module monitors deep displacement of geological hazards by flipping, and the monitoring information from the inclinometer module is integrated and transmitted by the mechanical monitoring sensor.

[0011] A sensor-based deep displacement monitoring device for geological disasters includes a tilting hole at the bottom of the monitor for deep monitoring, and the top of the monitor is detachably connected to the bottom of a transmission cable. The transmission cable is used to transmit the information collected by the tilting module and the mechanical monitoring sensor. The monitor has tilting brackets rotatably mounted on the upper and lower sides inside via bearings. The middle part of the tilting bracket is fixedly installed with the tilting module, and the outer end of the tilting bracket is rotatably mounted with a guide wheel.

[0012] Preferably, a take-up and release mechanism is provided on the outside of the upper end of the inclinometer hole. The take-up and release mechanism includes a take-up and release platform, and a take-up and release roller is rotatably provided inside the take-up and release platform through a bearing. The take-up and release roller is used to wind up the transmission cable to be released. The take-up and release mechanism includes a reciprocating screw, and the reciprocating screw is rotatably installed in the lower middle part of the take-up and release platform through a bearing. One end of the reciprocating screw is connected to one end of the take-up and release roller through a pulley assembly. The reciprocating screw is threaded through and connected to the bottom end of the guide slider.

[0013] The take-up and take-down mechanism includes a guide plate, which is fixedly installed in the lower middle part of the take-up and take-down platform. The guide plate is slidably connected to the upper end of the guide slider. A guide tube is fixedly installed at the top of the guide slider. The guide tube is sleeved on the outside of the transmission cable to make the take-up and take-down cable reciprocate.

[0014] Preferably, the take-up and release mechanism includes a dust removal roller, which is rotatably mounted on the front and rear sides below the take-up and release platform via bearings. The other end of the reciprocating screw included in the take-up and release mechanism meshes with one end of the rear dust removal roller via a transmission gear. Furthermore, a driven gear is meshed in front of the transmission gear at the end of the rear dust removal roller, and the driven gear is fixedly mounted at the end of the front dust removal roller.

[0015] Preferably, the dust removal rollers on the front and rear sides of the take-up and put-down mechanism are arranged in opposite directions, and the dust removal rollers on the front and rear sides are used to clean and scrape off the dirt and dust on the outer wall of the transmission cable during the take-up and put-down process, so as to avoid damage to the transmission cable caused by the friction of sticky dust during take-up and put-down.

[0016] Preferably, a positioning mechanism is provided below the deployment and take-up platform, and the positioning mechanism includes a positioning rotating cylinder. An extended abutment rod for contact limiting the outside of the inclinometer hole is elastically slidably provided inside the positioning rotating cylinder. The positioning mechanism includes a positioning column, and the positioning column is fixedly installed at the four corners of the bottom surface of the deployment and take-up platform. A lifting slide rod is fixedly installed at the bottom end of the positioning column, and the lifting slide rod slides through the upper end of the moving guide wheel. At the same time, a linkage bracket is fixedly installed between adjacent moving guide wheels.

[0017] Preferably, the positioning mechanism includes a positioning horizontal plate, which is fixedly installed below the adjacent positioning column. A lifting screw is rotatably installed on the center of the bottom surface of the positioning horizontal plate through a bearing. The lower end of the lifting screw is threaded through and connected to the center of the linkage bracket. The rotation of the lifting screw drives the linkage bracket and the moving guide wheel to move up and down.

[0018] Preferably, the positioning mechanism includes a positioning rotating cylinder whose outer end is fixedly installed on the bottom end of a lifting screw, and a threaded sleeve is rotatably provided inside the positioning rotating cylinder through a bearing. A main drive rack is fixedly installed at an equal angle on the outer wall of the middle part of the threaded sleeve, and a secondary drive rack is meshed behind the main drive rack.

[0019] Preferably, the positioning mechanism includes a sliding guide groove formed inside the extended abutment rod, and a secondary drive rack is fixedly installed at equal intervals inside the sliding guide groove. A positioning screw is provided through the internal thread of the threaded sleeve, and the top end of the positioning screw passes through the interior of the positioning rotating cylinder through a fixedly provided limiting slide rod.

[0020] Preferably, the bottom end of the positioning screw included in the positioning mechanism is slidably disposed outside the bottom surface of the positioning rotating cylinder, and a soil-penetrating cone is fixedly installed at the bottom end of the positioning screw, and the soil-penetrating cone improves the stability during monitoring by descending and rotating into the ground.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the sensor and the geological disaster deep displacement monitoring device using the sensor are deployed and retracted through a deployment and retraction platform for the transmission cable and monitoring instrument; the positioning rotating cylinder and the extended contact rod are limited to the outside of the inclinometer hole; the soil-penetrating cone enters the ground for lifting and stabilization; and the contact dust removal roller cleans dust and soil during deployment and retraction, thereby improving the stability of the transmission cable and monitoring instrument and the accuracy of the data during deployment and monitoring. The specific details are as follows:

[0022] 1. The monitoring instrument is lowered into the inclinometer hole. It is raised and lowered by the inclinometer brackets on the upper and lower sides and the guide wheel in contact with the inner wall of the inclinometer hole. After the inclinometer brackets rotate, the signal is transmitted to the inclinometer module and the mechanical monitoring sensor, thereby realizing the deep displacement monitoring.

[0023] 2. The servo motor drives the lifting screw to rotate, and the threaded linkage bracket drives the moving guide wheel to rise, so that the positioning column is in contact with the ground to support the launching and taking-up platform, avoiding displacement due to terrain problems during monitoring. The lifting screw drives the extension abutment rod to rotate inward, and the positioning rotating cylinder elastically connected inside the extension abutment rod is in contact with the outer wall of the inclinometer hole, ensuring the stability of the corresponding inclinometer hole during monitoring.

[0024] When the positioning rotating cylinder moves, the auxiliary drive rack meshes with the main drive rack, causing the threaded sleeve to rotate. Then, the threaded positioning screw is limited by the limiting slide bar, so that the positioning screw can drive the bottom soil-entry cone to slide downward and enter the ground to improve the limiting effect.

[0025] 3. The take-up and unwind platform takes up and unwinds the wound transmission cable. The bottom is driven by a pulley assembly to rotate the reciprocating screw. The threaded guide slider drives the guide tube to move back and forth in the left and right directions so that the internal transmission cable moves during take-up and unwinding, avoiding the cable from being wound up on the same side of the take-up and unwinding platform and piling up.

[0026] 4. The reciprocating screw drives the dust removal rollers on both sides to rotate via the transmission gear and the driven gear. The dust removal rollers clean the transmission cable that is attached to the middle, preventing the sticky soil and dust from causing friction and damage to the transmission cable. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0029] Figure 3 This is a schematic diagram of the overall bottom view of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the present invention after the movable guide wheel has descended;

[0031] Figure 5 This is a schematic diagram of the structure of the present invention after the movable guide wheel has risen;

[0032] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point B;

[0033] Figure 7 This is a schematic diagram of the structure of the present invention after the extended contact rod comes into contact with the inclinometer hole;

[0034] Figure 8 This is a schematic diagram of the positioning screw installation structure of the present invention;

[0035] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C;

[0036] Figure 10 This is a schematic diagram of the mounting structure of the take-up and release rollers of the present invention;

[0037] Figure 11 This is a schematic diagram of the three-dimensional structure of the guide tube of the present invention;

[0038] Figure 12 This is a schematic diagram of the installation structure of the mechanical monitoring sensor of the present invention.

[0039] In the diagram: 1. Monitoring instrument; 2. Inclinometer hole; 3. Transmission cable; 4. Retracting platform; 5. Retracting roller; 6. Positioning rotary cylinder; 7. Extension contact rod; 8. Reciprocating screw; 9. Pulley assembly; 10. Guide slider; 11. Guide plate; 12. Guide tube; 13. Dust removal roller; 14. Transmission gear; 15. Driven gear; 16. Positioning column; 17. Lifting slide bar; 18. Moving guide wheel; 19. Linkage bracket; 20. Positioning cross plate; 21. Lifting screw; 22. Threaded sleeve; 23. Main drive rack; 24. Secondary drive rack; 25. Sliding guide groove; 26. Positioning screw; 27. Limiting slide bar; 28. Soil entry cone; 29. ​​Inclinometer bracket; 30. Inclinometer module; 31. Guide roller; 32. Mechanical monitoring sensor. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-12 The present invention provides the following technical solution:

[0042] Example 1: To address the problems existing in the use of existing sensors and geological disaster deep displacement monitoring devices using these sensors, this example provides the following technical solution: a sensor comprising a mechanical monitoring sensor 32 and a monitoring instrument 1 for mounting the mechanical monitoring sensor 32; inclination modules 30 are provided on both the upper and lower sides of the mechanical monitoring sensor 32, and the inclination modules 30 are interconnected with the mechanical monitoring sensor 32; the inclination modules 30 monitor the deep displacement of geological disasters by flipping, and the monitoring information from the inclination modules 30 is integrated and transmitted / received by the mechanical monitoring sensor 32.

[0043] A sensor-based deep displacement monitoring device for geological disasters includes a monitoring instrument 1 with a clinometer hole 2 for deep monitoring at its lower part. The top of the monitoring instrument 1 is detachably connected to the bottom end of a transmission cable 3, which is used to transmit the information collected by the clinometer module 30 and the mechanical monitoring sensor 32. Inside the monitoring instrument 1, clinometer brackets 29 are rotatably mounted on the upper and lower sides via bearings. The middle part of the clinometer bracket 29 is fixedly installed between it and the clinometer module 30, and a guide wheel 31 is rotatably mounted on the outer end of the clinometer bracket 29.

[0044] like Figure 1 , Figure 12 As shown, when the monitoring instrument 1 is lowered into the inclinometer hole 2, the top of the monitoring instrument 1 is connected to the transmission cable 3. The inclinometer brackets 29 on the upper and lower sides of the monitoring instrument 1 and the guide wheel 31 are attached to the inner wall of the inclinometer hole 2. After the inclinometer brackets 29 rotate, the signal is transmitted to the inclinometer module 30 and the mechanical monitoring sensor 32, so that the offset signal can be transmitted to the receiving device through the transmission cable 3, thereby realizing deep displacement monitoring.

[0045] Example 2: In order to solve the problems existing in the use of the existing sensor and the geological disaster deep displacement monitoring device using the sensor, a positioning mechanism is provided below the deployment platform 4. The positioning mechanism includes a positioning rotating cylinder 6, and the interior of the positioning rotating cylinder 6 is elastically slidably provided with an extended abutment rod 7 for contact limiting the outside of the inclinometer hole 2. The positioning mechanism includes a positioning column 16, and the positioning column 16 is fixedly installed at the four corners of the bottom surface of the deployment platform 4. The bottom end of the positioning column 16 is fixedly installed with a lifting slide rod 17, and the lifting slide rod 17 slides through the upper end of the moving guide wheel 18. At the same time, a linkage bracket 19 is fixedly installed between adjacent moving guide wheels 18.

[0046] The positioning mechanism includes a positioning horizontal plate 20, which is fixedly installed below the adjacent positioning column 16. The bottom surface of the positioning horizontal plate 20 is rotatably mounted with a lifting screw 21 through a bearing. The lower end of the lifting screw 21 is threadedly connected to the middle of the linkage bracket 19. The rotation of the lifting screw 21 drives the linkage bracket 19 and the moving guide wheel 18 to move up and down.

[0047] like Figures 4-6 As shown, the positioning mechanism includes a positioning column 16 fixedly installed at the bottom of the take-up and take-down platform 4. The movable guide wheel 18 at the bottom of the positioning column 16 is initially located at the lowest position, which facilitates the movement and transport of the monitor 1 and the take-up and take-down roller 5 for the transmission cable 3 on the take-up and take-down platform 4, so that the take-up and take-down platform 4 can be set up at the top center position of the inclinometer hole 2. Then, the servo motor at the top of the positioning plate 20 drives the lifting screw 21 to rotate, so that the linkage bracket 19 threadedly connected to the lifting screw 21 moves upward, and at the same time drives the movable guide wheel 18 at the outer end to rise along the direction of the lifting slide bar 17. After it falls and contacts the ground, the positioning column 16 supports the take-up and take-down platform 4 to prevent it from shifting due to terrain problems during the monitoring process.

[0048] Example 3: To address the problems existing in the use of existing sensors and deep displacement monitoring devices for geological disasters, the positioning mechanism includes a positioning rotating cylinder 6 whose outer end is fixedly installed at the bottom end of the lifting screw 21. Inside the positioning rotating cylinder 6, a threaded sleeve 22 is rotatably mounted via bearings. A main drive rack 23 is fixedly mounted at equal angles on the outer wall of the middle section of the threaded sleeve 22, and a secondary drive rack 24 is meshed behind the main drive rack 23. The positioning mechanism also includes a sliding mechanism located inside the extended contact rod 7. The sliding guide groove 25 is fixedly installed inside the sliding guide groove 25 at equal intervals, and the internal thread of the threaded sleeve 22 is provided with a positioning screw 26, and the top end of the positioning screw 26 is provided through the fixed limit slide bar 27 inside the positioning rotating cylinder 6; the bottom end of the positioning screw 26 included in the positioning mechanism is slidably provided outside the bottom surface of the positioning rotating cylinder 6, and the bottom end of the positioning screw 26 is fixedly installed with a soil entry cone 28, and the soil entry cone 28 improves the stability during monitoring by descending and screwing into the ground.

[0049] like Figures 7-9 As shown, the rotating lifting screw 21 drives the bottom positioning rotating cylinder 6 to rotate towards the inclinometer hole 2. The positioning rotating cylinder 6 drives the extended contact rod 7 to approach the inclinometer hole 2 and squeeze it. Then the extended contact rod 7 slides to one side of the positioning rotating cylinder 6. During the sliding process, the secondary drive rack 24 inside the sliding guide groove 25 meshes with the main drive rack 23 to drive the threaded sleeve 22 to rotate. The positioning screw 26, which is threaded to the threaded sleeve 22, is limited by the limiting slide rod 27 so that the positioning screw 26 drives the bottom soil entry cone 28 into the corresponding ground. After the inner end of the extended contact rod 7 is attached to the outer wall of the inclinometer hole 2, the soil entry cone 28 achieves the second positioning, preventing the monitoring instrument 1 from being misaligned relative to the inclinometer hole 2 during the detection process.

[0050] Example 4: To address the problems existing in the use of existing sensors and deep displacement monitoring devices for geological disasters using these sensors, a take-up and release mechanism is provided on the outside of the upper end of the inclinometer hole 2. The take-up and release mechanism includes a take-up and release platform 4, and a take-up and release roller 5 is rotatably mounted inside the take-up and release platform 4 via bearings. The take-up and release roller 5 is used to wind up the transmission cable 3 to be released. The take-up and release mechanism includes a reciprocating screw 8, which is rotatably mounted on the lower middle part of the take-up and release platform 4 via bearings. One end of the reciprocating screw 8 is connected to one end of the take-up and release roller 5 via a pulley assembly 9. The reciprocating screw 8 is threaded through and connected to the bottom end of the guide slider 10. The take-up and release mechanism includes a guide plate 11, which is fixedly mounted on the lower middle part of the take-up and release platform 4. The interior of the guide plate 11 is slidably connected to the upper end of the guide slider 10. A guide tube 12 is fixedly mounted on the top end of the guide slider 10. The guide tube 12 is sleeved on the outside of the transmission cable 3 to enable it to move back and forth during take-up and release.

[0051] The take-up and take-down mechanism includes a dust removal roller 13, which is rotatably mounted on the front and rear sides below the take-up and take-down platform 4 via bearings. The other end of the reciprocating screw 8 in the take-up and take-down mechanism meshes with one end of the rear dust removal roller 13 via a transmission gear 14. A driven gear 15 is meshed in front of the transmission gear 14 at the end of the rear dust removal roller 13, and the driven gear 15 is fixedly mounted on the end of the front dust removal roller 13. The rotation directions of the front and rear dust removal rollers 13 in the take-up and take-down mechanism are opposite to each other. The front and rear dust removal rollers 13 are used to clean and scrape off the dirt and dust on the outer wall of the transmission cable 3 during the take-up and take-down process, so as to prevent the transmission cable 3 from being damaged by friction due to sticky dust during take-up and take-down.

[0052] like Figures 10-12 As shown, the bottom end of the transmission cable 3 is inserted into the interior of the guide tube 12 and then leads out, passing between the dust removal rollers 13 on both the front and rear sides. It is then connected to the bottom end of the monitor 1. Finally, the monitor 1 is placed inside the inclination measuring hole 2. At the same time, the transmission cable 3 is released after the take-up and release platform 4 is rotated. Meanwhile, the reciprocating screw 8 is rotated by the pulley assembly 9. The threaded guide slider 10 is limited by the guide plate 11, which in turn drives the guide tube 12 and the internal transmission cable 3 to reciprocate and take up and release, thus preventing the cable from being tangled on the same side of the take-up and release platform 4 and accumulating.

[0053] Furthermore, the reciprocating screw 8 drives the rear dust removal roller 13 to rotate via the transmission gear 14, and the front and rear dust removal rollers 13 mesh with the driven gear 15 so that the dust removal rollers 13 rotating in opposite directions can clean and remove dust from the transmission cable 3 during winding and unwinding, avoiding friction damage to the transmission cable 3 caused by sticky soil and dust, and improving the stability and data accuracy of the transmission cable 3 and the monitoring instrument 1 during winding, unwinding and monitoring.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sensor-based deep displacement monitoring device for geological disasters, comprising a monitoring instrument (1), wherein the monitoring instrument (1) has a clinometer hole (2) for deep monitoring at its lower part, and the top of the monitoring instrument (1) is detachably connected to the bottom end of a transmission cable (3), and the transmission cable (3) is used to transmit the collected information of the clinometer module (30) and the mechanical monitoring sensor (32), and clinometer brackets (29) are rotatably provided on the upper and lower sides of the monitoring instrument (1) through bearings, and the middle part of the clinometer bracket (29) is fixedly installed between the clinometer module (30), and a guide wheel (31) is rotatably installed on the outer end of the clinometer bracket (29). The upper end of the inclinometer hole (2) is provided with a retraction mechanism, which includes a retraction platform (4). A positioning mechanism is provided below the receiving and releasing platform (4); The positioning mechanism includes a positioning rotating cylinder (6), and the interior of the positioning rotating cylinder (6) is elastically slidably provided with an extended abutment rod (7) for contacting and limiting the outside of the inclinometer hole (2). The positioning mechanism includes a positioning column (16), and the positioning column (16) is fixedly installed at the four corners of the bottom surface of the launching platform (4). The bottom end of the positioning column (16) is fixedly installed with a lifting slide rod (17), and the lifting slide rod (17) slides through the upper end of the moving guide wheel (18). At the same time, a linkage bracket (19) is fixedly installed between adjacent moving guide wheels (18). The positioning mechanism includes a positioning horizontal plate (20), and the positioning horizontal plate (20) is fixedly installed below the adjacent positioning column (16). The bottom surface of the positioning horizontal plate (20) is rotatably mounted with a lifting screw (21) through a bearing. At the same time, the lower end of the lifting screw (21) is threaded through and connected to the middle of the linkage bracket (19). The rotation of the lifting screw (21) drives the linkage bracket (19) and the moving guide wheel (18) to move up and down. The positioning mechanism includes a positioning rotating cylinder (6) whose outer end is fixedly installed at the bottom end of the lifting screw (21), and a threaded sleeve (22) is rotatably provided inside the positioning rotating cylinder (6) through a bearing. A main drive rack (23) is fixedly installed at an equal angle on the outer wall of the middle part of the threaded sleeve (22), and a secondary drive rack (24) is meshed behind the main drive rack (23). The positioning mechanism includes a sliding guide groove (25) opened inside the extended contact rod (7), and the auxiliary drive rack (24) is fixedly installed at equal distances inside the sliding guide groove (25). The internal thread of the threaded sleeve (22) is provided with a positioning screw (26), and the top end of the positioning screw (26) passes through the positioning rotating cylinder (6) through a fixedly provided limiting slide rod (27). The positioning mechanism includes a positioning screw (26) whose bottom end is slidably disposed outside the bottom surface of the positioning rotating cylinder (6), and a soil-penetrating cone (28) is fixedly installed at the bottom end of the positioning screw (26), and the soil-penetrating cone (28) improves the stability during monitoring by descending and rotating into the ground.

2. The geological disaster deep displacement monitoring device according to claim 1, characterized in that: The take-up and release platform (4) is equipped with a take-up and release roller (5) through a bearing, and the take-up and release roller (5) is used to wind up the transmission cable (3) to be released. The take-up and release mechanism includes a reciprocating screw (8), and the reciprocating screw (8) is rotatably installed in the lower middle part of the take-up and release platform (4) through a bearing. One end of the reciprocating screw (8) is connected to one end of the take-up and release roller (5) through a pulley assembly (9), and the reciprocating screw (8) is threaded through and connected to the bottom end of the guide slider (10). The take-up and take-down mechanism includes a guide plate (11), which is fixedly installed in the lower middle part of the take-up and take-down platform (4). The inside of the guide plate (11) is slidably connected to the upper end of the guide slider (10). The top of the guide slider (10) is fixedly installed with a guide tube (12), which is sleeved on the outside of the transmission cable (3) to make it reciprocate.

3. The geological disaster deep displacement monitoring device according to claim 2, characterized in that: The take-up and release mechanism includes a dust removal roller (13), and the dust removal roller (13) is rotatably mounted on the front and rear sides below the take-up and release platform (4) via bearings. The other end of the reciprocating screw (8) included in the take-up and release mechanism meshes with one end of the rear dust removal roller (13) via a transmission gear (14). A driven gear (15) is meshed in front of the transmission gear (14) at the end of the rear dust removal roller (13), and the driven gear (15) is fixedly mounted at the end of the front dust removal roller (13).

4. The geological disaster deep displacement monitoring device according to claim 3, characterized in that: The dust removal rollers (13) on the front and rear sides of the winding and unwinding mechanism are arranged in opposite directions. The dust removal rollers (13) on the front and rear sides are used to clean and scrape the mud and dust on the outer wall of the transmission cable (3) during the winding and unwinding process, so as to avoid damage to the transmission cable (3) caused by sticky dust friction during winding and unwinding.

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