Dynamic monitoring device for weathering stability of foundation pit slope

Abstract

The invention relates to the technical field of foundation pit slope monitoring, in particular to a foundation pit slope weathering stability dynamic monitoring device which mainly comprises a monitor transceiver and a built-in lens. The protective cover is buckled on the monitor emission receiver, and a cleaning assembly is arranged in the protective cover; the rotating assembly is arranged in the protective cover and used for driving the cleaning assembly to rotate; the scraping assembly is used for scraping dust adhered to the cleaning assembly; the device has the beneficial effects that when monitoring is completed and a protective cover is installed, a first extrusion block extrudes a first air bag, a second air bag is expanded, a cleaning plate is pushed to a lens through a storage plate, a third air bag is not compressed any more, a second guide block pushes the cleaning plate to move towards the lens, flexible cleaning cotton gradually makes contact with the lens, and the lens is cleaned; and the cleaning action is bound with the operation, which means that the action of buckling the protective cover is accompanied by the cleaning after each time of completion, so that the timeliness and the regularity of the cleaning are ensured, and additional memory or operation is not needed.

Description

Technical Field

[0001] This invention relates to the field of foundation pit slope monitoring technology, specifically to a dynamic monitoring device for the weathering stability of foundation pit slopes. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the foundation elevation and foundation plan dimensions; Slope stability monitoring is an essential part of highway construction. By monitoring slope stability, changes in the foundation pit slope can be observed, facilitating the detection of anomalies and enabling timely intervention to ensure the safe operation of the project. In the existing technology, Chinese invention patent CN119374005A discloses a dynamic monitoring device for foundation pit slope stability. This invention includes a base plate, support columns, a top plate, and a lifting mechanism. The lifting mechanism includes a connecting block, a frame fixedly connected to the right side of the connecting block, a motor fixedly connected to the front end of the frame, and a rotating rod fixedly connected to the output end of the motor. The outer end of the pole is equipped with a second limiting steel wire rope. The lower end of the second limiting steel wire rope is fixedly connected to a second connecting block. The lower end of the second connecting block is fixedly connected to a lifting plate. The right side of the lifting plate is fixedly connected to a connecting crossbar. The right side of the connecting crossbar is fixedly connected to a monitoring device. The pit slope monitoring device is an existing device used to monitor various physical quantities, environmental conditions, or system status. When the height of the monitoring device needs to be adjusted, the motor and rotating rod are started to drive the second limiting steel wire rope to move up and down, thereby driving the lifting plate to move up and down. The lifting plate is assisted by a slider, a vertical slide groove, a second limiting slider, and a sliding rod for limiting. In the aforementioned technology, the limit steel wire rope II is moved up and down by a motor and a rotating rod, thereby moving the lifting plate up and down to adjust the height of the monitoring equipment. However, the on-site environment of the foundation pit slope is extremely harsh, and the monitoring equipment is exposed to the outdoors for a long time. Due to the extreme wind, sand and dust at the construction site, the surface of the monitoring equipment, especially its optical lens, laser emission / reception window and other precision sensing elements, is easily covered by dust, mud and other pollutants. However, the lens is often cleaned when it is completely blurred, which causes dust and other impurities to adhere firmly to the lens, causing damage to the lens over time. Summary of the Invention

[0003] The purpose of this invention is to provide a dynamic monitoring device for the weathering stability of foundation pit slopes, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A dynamic monitoring device for weathering stability of foundation pit slopes includes a monitoring instrument base, on which a monitoring instrument bracket and a monitoring instrument transmitter and receiver are mounted. The monitoring instrument transmitter and receiver contains a lens. The device further comprises: A protective cover is attached to the transmitter and receiver of the monitor, and a cleaning component is provided inside the protective cover for cleaning the lens. The cleaning component includes a cleaning plate. A rotating component, located inside the protective cover, is used to drive the cleaning component to rotate, thereby increasing the cleaning effect on the lens; The scraping component is used to scrape off dust adhering to the cleaning component, preventing the dust removed by the cleaning component from adhering to the cleaning component.

[0005] Furthermore, a shelf is provided inside the protective cover at a position corresponding to the lens, and a first return spring is provided between the side wall of the shelf and the inner wall of the protective cover, and the shelf is elastically connected to the protective cover through the first return spring; The outer surface of the shelf is provided with a first guide block, and the inner wall of the protective cover is provided with a first guide groove corresponding to the position of the first guide block. The first guide block is slidably disposed inside the first guide groove.

[0006] Furthermore, a second airbag is provided between the side wall of the first guide block and the inner wall of the first guide groove; The protective cover has a first storage slot at the end position of the transmitter and receiver of the monitoring instrument. A first compression block is inserted into the first storage slot, and a first airbag is provided between the end of the first compression block and the inner wall of the first storage slot. A first exhaust pipe is provided between the first airbag and the second airbag, and the first airbag is connected to the second airbag through the first exhaust pipe.

[0007] Furthermore, the shelf has a cap-shaped structure, the cleaning plate is disposed inside the end of the shelf away from the first return spring, and the cleaning plate has a groove on the side facing the lens, and a flexible cleaning cotton is disposed inside the groove; The rotating assembly includes a limiting ring disposed inside the shelf corresponding to the side wall of the cleaning plate. One end of the cleaning plate is inserted into the inside of the limiting ring, and a rotating shaft is disposed at the center of the inside of the limiting ring. A countersunk hole is opened at the end of the cleaning plate corresponding to the position of the rotating shaft, and the rotating shaft is inserted into the inside of the countersunk hole. The outer surface of the rotating shaft is provided with a spiral guide groove, and the inner wall of the countersunk hole is provided with a third guide block at the position corresponding to the spiral guide groove. The third guide block is inserted into the interior of the spiral guide groove.

[0008] Furthermore, the side wall of the cleaning plate is provided with a locking groove corresponding to the position of the countersunk hole, and a limit plate is rotatably provided inside the locking groove; The outer surface of the limiting plate is provided with a second guide block, and the inner wall of the limiting ring is provided with a second guide groove at the position corresponding to the second guide block. The second guide block is slidably disposed inside the second guide groove, and a second return spring is provided between the side wall of the second guide block and the inner wall of the second guide groove. The cleaning plate is elastically rotatably connected to the limiting ring through the cooperation of the limiting plate and the second return spring.

[0009] Furthermore, a fourth airbag is provided between the side wall of the second guide block and the inner wall of the second guide groove; A third exhaust pipe is provided between each of the fourth airbags; A third airbag is provided between the side wall of the shelf and the inner wall of the protective cover. A second exhaust pipe is provided between the third airbag and the third exhaust pipe. Each of the fourth airbags is connected to the third airbag through the cooperation of the second exhaust pipe and the third exhaust pipe.

[0010] Furthermore, the scraping assembly includes a third storage groove opened inside the protective cover at a position corresponding to the flexible cleaning cotton, a support rod is inserted into the interior of the third storage groove, and a fourth return spring is provided between the lower end of the support rod and the bottom end of the interior of the third storage groove; The support rod has a second storage groove on the side wall facing the flexible cleaning cotton. A scraper is provided inside the second storage groove, and multiple sets of spaced third return springs are provided between the side wall of the scraper and the inner wall of the second storage groove. The scraper is elastically connected to the support rod through the multiple sets of the third return springs. The lower end of the scraper has a beveled surface.

[0011] Furthermore, a fixing groove is provided on one side of the lower end of the support rod; A fifth storage slot is provided on the inner side wall of the third storage slot at a position corresponding to the fixed slot. A fixed block is inserted into the interior of the fifth storage slot, and a fifth return spring is provided between the end of the fixed block and the inner wall of the fifth storage slot. The fixed block is elastically inserted into the interior of the fixed slot through the fifth return spring.

[0012] Furthermore, a fourth storage slot is provided inside the protective cover at a position corresponding to the side wall of the shelf, and a second pressing block is inserted into the fourth storage slot; A first through hole is provided between the fourth storage slot and the fifth storage slot. A first pull rope is provided inside the first through hole. The two ends of the first pull rope are respectively connected to the end of the fixing block and the side wall of the second pressing block.

[0013] Furthermore, a groove is provided on the inner sidewall of the protective cover corresponding to the position of the support rod. A slider is slidably arranged inside the groove. A second through hole is provided between the inside of the groove and the bottom of the third storage groove. A second pull rope is provided inside the second through hole. The two ends of the second pull rope are respectively connected to the sidewall of the slider and the bottom of the support rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. When not in use, the protective cover can be used to protect the lens inside the transmitter and receiver of the monitor to prevent dust from entering. After use, the protective cover should be placed in front of the lens for protection. When installing the protective cover, the end of the transmitter and receiver of the monitor squeezes the first compression block. The air inside the first airbag on one side of the first compression block is discharged into the second airbag through the first exhaust pipe. The second airbag expands and pushes the cleaning plate towards the lens through the placement plate. When the placement plate moves, the third airbag is no longer compressed. At this time, the second guide block, under the action of the second return spring, pushes the cleaning plate towards the lens. When moving, the flexible cleaning cotton gradually comes into contact with the lens and cleans the lens. Binding the cleaning action to this operation means that the action of putting on the protective cover after each use is accompanied by an automatic cleaning, ensuring the timeliness and regularity of cleaning. No additional memory or operation is required from the user, which greatly improves the automation level and maintenance reliability of the monitoring device. 2. With the cooperation of the spiral guide groove and the third guide block, the cleaning plate rotates along the rotating shaft. When the cleaning plate rotates, the contact surface between the flexible cleaning cotton and the lens rotates, thus cleaning the lens by rotation. 3. When the protective cover is removed, both the shelf and the cleaning plate will reset. When the shelf resets, it will squeeze the second squeezing block. With the help of the first pull rope, the second squeezing block will move the fixing block out of the fixing groove. At this time, the support rod will pop out under the action of the fourth reset spring. The elastic scraper will contact the surface of the flexible cleaning cotton. At the same time, when the flexible cleaning cotton is rotated and reset, the surface of the flexible cleaning cotton will contact the scraper. The scraper will remove the dust adhering to the surface of the flexible cleaning cotton. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional schematic diagram of the connection between the transmitter / receiver and the protective cover structure of the monitoring instrument of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B; Figure 5 This is a schematic cross-sectional view of the protective cover structure of the present invention; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point C; Figure 7 for Figure 5 Enlarged schematic diagram of the structure at point D; Figure 8 This is a schematic diagram showing the connection between the cleaning plate and the limiting plate of the present invention; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point E in the middle; Figure 10 This is a schematic cross-sectional view of the limiting ring structure of the present invention.

[0016] In the diagram: 1. Monitor base; 2. Monitor bracket; 3. Monitor transmitter and receiver; 4. Protective cover; 5. Lens; 6. First storage slot; 7. First compression block; 8. First airbag; 9. First exhaust pipe; 10. First guide groove; 11. Second airbag; 12. First guide block; 13. Storage plate; 14. First reset spring; 15. Third airbag; 16. Cleaning plate; 17. Groove; 18. Flexible cleaning cotton; 19. Second exhaust pipe; 20. Third exhaust pipe; 21. Rotating shaft; 22. Spiral guide groove; 24. Limiting plate; 25. Second guide groove; 26. Second reset... Spring 26, second guide block 27, fourth airbag 28, countersunk hole 29, locking groove 30, support rod 31, second storage groove 32, scraper 33, third return spring 34, third storage groove 35, fourth return spring 36, beveled surface 37, fixing groove 38, fourth storage groove 39, second pressing block 40, first through hole 41, first pull rope 42, sliding groove 43, slider 44, second through hole 45, second pull rope 46, fifth storage groove 47, fixing block 48, fifth return spring 49, third guide block 50, limiting ring 51. Detailed Implementation

[0017] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples. Example 1:

[0018] Please see Figures 1 to 10 This invention provides a technical solution: a dynamic monitoring device for the weathering stability of a foundation pit slope, comprising a monitoring instrument base 1, a monitoring instrument bracket 2 and a monitoring instrument transmitter and receiver 3 mounted on the monitoring instrument base 1, and a lens 5 disposed inside the monitoring instrument transmitter and receiver 3, characterized in that it further comprises: A protective cover 4 is attached to the transmitter and receiver 3 of the monitor, and a cleaning component is provided inside the protective cover 4 for cleaning the lens 5. The cleaning component includes a cleaning plate 16. A rotating component is installed inside the protective cover 4 to drive the cleaning component to rotate, thereby increasing the cleaning effect on the lens 5. The scraping component is used to scrape off the dust adhering to the cleaning component, preventing the dust cleaned by the cleaning component from adhering to the cleaning component; The monitoring instrument transmitter and receiver 3 monitors the foundation pit slope and connects the alarm device to the monitoring instrument transmitter and receiver 3. When the foundation pit slope is displaced or vibrates, the monitoring instrument transmitter and receiver 3 sends a signal to the alarm device, causing the alarm device to sound an alarm. After the work is completed, the lens 5 inside the transmitter and receiver 3 of the monitor is protected by the protective cover 4. During the installation process, the cleaning component inside the protective cover 4 comes into contact with the lens 5 and cleans the surface of the lens 5. During the cleaning process, the rotating component drives the cleaning component to rotate, thereby achieving rotational cleaning of the lens 5 and enhancing the cleaning effect. When the protective cover 4 is removed, the scraping component can scrape off the dust adhering to the cleaning component, preventing the dust on the cleaning component from adhering to the surface of the lens 5 during the next cleaning. Example 2:

[0019] like Figures 2-3 As shown, the dynamic monitoring device for weathering stability of foundation pit slope disclosed in Embodiment 2 of the present invention has a structure that is basically the same as that in Embodiment 1, except that: Inside the protective cover 4, at a position corresponding to the lens 5, a shelf 13 is provided. A first return spring 14 is provided between the side wall of the shelf 13 and the inner wall of the protective cover 4. The shelf 13 is elastically connected to the protective cover 4 through the first return spring 14. The outer surface of the shelf 13 is provided with a first guide block 12, and the inner wall of the protective cover 4 is provided with a first guide groove 10 corresponding to the position of the first guide block 12. The first guide block 12 is slidably disposed inside the first guide groove 10. A second airbag 11 is provided between the side wall of the first guide block 12 and the inner wall of the first guide groove 10; The protective cover 4 has a first storage groove 6 at the end position of the monitor transmitter receiver 3. A first compression block 7 is inserted into the first storage groove 6, and a first airbag 8 is provided between the end of the first compression block 7 and the inner wall of the first storage groove 6. A first exhaust pipe 9 is provided between the first airbag 8 and the second airbag 11, and the first airbag 8 is connected to the second airbag 11 through the first exhaust pipe 9. When the protective cover 4 is installed, the end of the transmitter receiver 3 of the monitor squeezes the first compression block 7. The air inside the first airbag 8 on one side of the first compression block 7 is discharged into the second airbag 11 through the first exhaust pipe 9. The second airbag 11 expands and pushes the cleaning plate 16 toward the lens 5 through the placement plate 13. Example 3:

[0020] like Figures 3-4 As shown, the dynamic monitoring device for weathering stability of foundation pit slope disclosed in Embodiment 3 of the present invention has a structure that is basically the same as that in Embodiment 2, except that: The cleaning plate 16 is disposed inside the end of the shelf 13 away from the first return spring 14, and the cleaning plate 16 has a groove 17 on the side facing the lens 5, and a flexible cleaning cotton 18 is disposed inside the groove 17. The second airbag 11 inflates and pushes the cleaning plate 16 toward the lens 5 through the placement plate 13. At this time, the flexible cleaning cotton 18 gradually comes into contact with the lens 5 and cleans the lens 5. Example 4:

[0021] like Figures 3-4 as well as Figures 8-10 As shown, the dynamic monitoring device for weathering stability of foundation pit slope disclosed in Embodiment 4 of the present invention has a structure that is basically the same as that in Embodiment 3, except that: The rotating assembly includes a limiting ring 51 disposed inside the shelf 13 at a position corresponding to the side wall of the cleaning plate 16. One end of the cleaning plate 16 is inserted into the limiting ring 51, and a rotating shaft 21 is disposed at the center of the limiting ring 51. A countersunk hole 29 is provided at the end of the cleaning plate 16 at a position corresponding to the rotating shaft 21, and the rotating shaft 21 is inserted into the countersunk hole 29. The side wall of the cleaning plate 16 is provided with a locking groove 30 at the position corresponding to the countersunk hole 29, and a limit plate 24 is rotatably provided inside the locking groove 30; The outer surface of the limiting plate 24 is provided with a second guide block 27, and the inner wall of the limiting ring 51 is provided with a second guide groove 25 corresponding to the position of the second guide block 27. The second guide block 27 is slidably disposed inside the second guide groove 25, and a second return spring 26 is provided between the side wall of the second guide block 27 and the inner wall of the second guide groove 25. The cleaning plate 16 is elastically rotatably connected to the limiting ring 51 through the cooperation of the limiting plate 24 and the second return spring 26. A fourth airbag 28 is provided between the side wall of the second guide block 27 and the inner wall of the second guide groove 25; A third exhaust pipe 20 is provided between each of the fourth airbags 28; A third airbag 15 is provided between the side wall of the shelf 13 and the inner wall of the protective cover 4. A second exhaust pipe 19 is provided between the third airbag 15 and the third exhaust pipe 20. Each of the fourth airbags 28 is connected to the third airbag 15 through the cooperation of the second exhaust pipe 19 and the third exhaust pipe 20. When the shelf 13 moves, the third airbag 15 is no longer compressed. At this time, the second guide block 27, under the action of the second return spring 26, pushes the cleaning plate 16 toward the lens 5. When moving, the flexible cleaning cotton 18 gradually comes into contact with the lens 5 and cleans the lens 5. Example 5:

[0022] like Figures 3-4 as well as Figures 8-10 As shown, the dynamic monitoring device for weathering stability of foundation pit slope disclosed in Embodiment Six of the present invention has a structure that is basically the same as that in Embodiment Five, except that: The outer surface of the rotating shaft 21 is provided with a spiral guide groove 22, and the inner wall of the countersunk hole 29 is provided with a third guide block 50 at the position corresponding to the spiral guide groove 22. The third guide block 50 is inserted into the spiral guide groove 22. With the cooperation of the spiral guide groove 22 and the third guide block 50, the cleaning plate 16 rotates along the rotating shaft 21. When the cleaning plate 16 rotates, the contact surface between the flexible cleaning cotton 18 and the lens 5 rotates, thus cleaning the lens 5 by rotation. Example 6:

[0023] like Figures 4-5 As shown, the dynamic monitoring device for weathering stability of foundation pit slope disclosed in Embodiment Six of the present invention has a structure that is basically the same as that in Embodiment Five, except that: The scraping assembly includes a third storage groove 35 located inside the protective cover 4 at a position corresponding to the flexible cleaning cotton 18. A support rod 31 is inserted into the third storage groove 35, and a fourth return spring 36 is provided between the lower end of the support rod 31 and the bottom end of the third storage groove 35. The support rod 31 has a second storage groove 32 on one side wall facing the flexible cleaning cotton 18. A scraper 33 is provided inside the second storage groove 32, and multiple sets of spaced third return springs 34 are provided between the side wall of the scraper 33 and the inner wall of the second storage groove 32. The scraper 33 is elastically connected to the support rod 31 through the multiple sets of third return springs 34. The lower end of the scraper 33 is provided with a beveled surface 37; A fixing groove 38 is provided on one side of the lower end of the support rod 31; The inner sidewall of the third storage groove 35 is provided with a fifth storage groove 47 at the position corresponding to the fixed groove 38. A fixed block 48 is inserted into the interior of the fifth storage groove 47, and a fifth return spring 49 is provided between the end of the fixed block 48 and the inner wall of the fifth storage groove 47. The fixed block 48 is elastically inserted into the interior of the fixed groove 38 through the fifth return spring 49. The protective cover 4 has a fourth storage slot 39 at the position corresponding to the side wall of the shelf 13, and a second pressing block 40 is inserted into the fourth storage slot 39. A first through hole 41 is provided between the fourth storage slot 39 and the fifth storage slot 47. A first pull rope 42 is provided inside the first through hole 41. The two ends of the first pull rope 42 are respectively connected to the end of the fixing block 48 and the side wall of the second pressing block 40. When the protective cover 4 is removed, both the shelf 13 and the cleaning plate 16 are reset. When the shelf 13 is reset, it will squeeze the second squeezing block 40. With the cooperation of the first pull rope 42, the second squeezing block 40 will move the fixing block 48 out of the fixing groove 38. At this time, the support rod 31 will pop out under the action of the fourth reset spring 36. The elastically set scraper 33 will contact the surface of the flexible cleaning cotton 18. At the same time, when the flexible cleaning cotton 18 is rotated and reset, the surface of the flexible cleaning cotton 18 will contact the scraper 33. The scraper 33 will remove the dust adhering to the surface of the flexible cleaning cotton 18. Example 7:

[0024] like Figure 6 As shown, the dynamic monitoring device for weathering stability of foundation pit slope disclosed in Embodiment 7 of the present invention has a structure that is basically the same as that in Embodiment 6, except that: The inner sidewall of the protective cover 4 is provided with a groove 43 corresponding to the position of the support rod 31. A slider 44 is slidably disposed inside the groove 43. A second through hole 45 is provided between the inside of the groove 43 and the bottom of the third storage groove 35. A second pull rope 46 is disposed inside the second through hole 45. The two ends of the second pull rope 46 are respectively connected to the sidewall of the slider 44 and the bottom of the support rod 31. When the protective cover 4 is installed, the end of the transmitter and receiver 3 of the monitor pushes the slider 44 to move. When the slider 44 moves, the second pull rope 46 drives the support rod 31 to move down into the third storage slot 35. When the end of the transmitter and receiver 3 of the monitor contacts the first squeezing block 7, the shelf 13 moves. At this time, the elastically set fixing block 48 pops out and limits the downward movement of the support rod 31.

[0025] The specific solution is as follows: the monitoring instrument transmitter and receiver 3 monitors the foundation pit slope, and the alarm device is electrically connected to the monitoring instrument transmitter and receiver 3. When the foundation pit slope is displaced or vibrates, the monitoring instrument transmitter and receiver 3 sends a signal to the alarm device, causing the alarm device to sound an alarm. After use, the protective cover 4 is installed on the end of the transmitter and receiver 3 of the monitor. When the protective cover 4 is installed, the end of the transmitter and receiver 3 of the monitor is squeezed by the first compression block 7. The air inside the first airbag 8 on one side of the first compression block 7 is discharged into the second airbag 11 through the first exhaust pipe 9. The second airbag 11 expands and pushes the cleaning plate 16 toward the lens 5 through the placement plate 13. When the placement plate 13 moves, the third airbag 15 is no longer compressed. At this time, the second guide block 27 pushes the cleaning plate 16 toward the lens 5 under the action of the second return spring 26. When moving, the flexible cleaning cotton 18 gradually contacts the lens 5 and cleans the lens 5. During the movement, the cleaning plate 16 rotates along the rotating shaft 21 with the cooperation of the spiral guide groove 22 and the third guide block 50. When the cleaning plate 16 rotates, the contact surface between the flexible cleaning cotton 18 and the lens 5 rotates and cleans the lens 5 by rotation. When used next time, the protective cover 4 will be removed. At this time, both the shelf 13 and the cleaning plate 16 will be reset. When the shelf 13 is reset, it will squeeze the second squeezing block 40. With the cooperation of the first pull rope 42, the second squeezing block 40 will move the fixing block 48 out of the fixing groove 38. At this time, the support rod 31 will pop out under the action of the fourth reset spring 36. The elastically set scraper 33 will contact the surface of the flexible cleaning cotton 18. At the same time, when the flexible cleaning cotton 18 is rotated and reset, the surface of the flexible cleaning cotton 18 will contact the scraper 33. The scraper 33 will remove the dust adhering to the surface of the flexible cleaning cotton 18.

[0026] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A dynamic monitoring device for the weathering stability of a foundation pit slope, comprising a monitoring instrument base (1), wherein a monitoring instrument bracket (2) and a monitoring instrument transmitter and receiver (3) are mounted on the monitoring instrument base (1), and a lens (5) is disposed inside the monitoring instrument transmitter and receiver (3), characterized in that, Also includes: A protective cover (4) is attached to the transmitter receiver (3) of the monitor, and a cleaning component is provided inside the protective cover (4) for cleaning the lens (5). The cleaning component includes a cleaning plate (16). A rotating component is installed inside the protective cover (4) to drive the cleaning component to rotate, thereby increasing the cleaning effect on the lens (5); The scraping component is used to scrape off dust adhering to the cleaning component, preventing the dust removed by the cleaning component from adhering to the cleaning component.

2. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 1, characterized in that, The protective cover (4) is provided with a shelf (13) at the position corresponding to the lens (5), and a first return spring (14) is provided between the shelf (13) and the protective cover (4). The shelf (13) is elastically connected to the protective cover (4) through the first return spring (14). The shelf (13) is provided with a first guide block (12), and the protective cover (4) is provided with a first guide groove (10) at the position corresponding to the first guide block (12). The first guide block (12) is slidably disposed inside the first guide groove (10).

3. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 2, characterized in that, A second airbag (11) is provided between the first guide block (12) and the first guide groove (10). The protective cover (4) has a first storage slot (6) at the position corresponding to the transmitter receiver (3) of the monitor. A first compression block (7) is inserted into the first storage slot (6), and a first airbag (8) is provided between the first compression block (7) and the first storage slot (6). A first exhaust pipe (9) is provided between the first airbag (8) and the second airbag (11), and the first airbag (8) is connected to the second airbag (11) through the first exhaust pipe (9).

4. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 3, characterized in that, The cleaning plate (16) is disposed in the storage plate (13), and a groove (17) is provided on the cleaning plate (16) facing the lens (5), and a flexible cleaning cotton (18) is disposed in the groove (17). The rotating assembly includes a limiting ring (51) disposed on the shelf (13) at a position corresponding to the cleaning plate (16). One end of the cleaning plate (16) is inserted into the limiting ring (51), and a rotating shaft (21) is disposed inside the limiting ring (51). A countersunk hole (29) is provided on the cleaning plate (16) at a position corresponding to the rotating shaft (21), and the rotating shaft (21) is inserted into the countersunk hole (29). The rotating shaft (21) has a spiral guide groove (22), and the countersunk hole (29) is provided with a third guide block (50) at the position corresponding to the spiral guide groove (22). The third guide block (50) is inserted into the spiral guide groove (22).

5. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 4, characterized in that, The cleaning plate (16) has a locking groove (30) at the position corresponding to the countersunk hole (29), and a limiting plate (24) is rotatably arranged in the locking groove (30). The limiting plate (24) is provided with a second guide block (27), and the inner wall of the limiting ring (51) is provided with a second guide groove (25) at the position corresponding to the second guide block (27). The second guide block (27) is slidably disposed in the second guide groove (25), and a second return spring (26) is provided between the second guide block (27) and the second guide groove (25). The cleaning plate (16) is elastically rotatably connected to the limiting ring (51) through the cooperation of the limiting plate (24) and the second return spring (26).

6. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 5, characterized in that, A fourth airbag (28) is provided between the second guide block (27) and the second guide groove (25); A third exhaust pipe (20) is provided between each of the fourth airbags (28); A third airbag (15) is provided between the storage plate (13) and the protective cover (4). A second exhaust pipe (19) is provided between the third airbag (15) and the third exhaust pipe (20). Each of the fourth airbags (28) is connected to the third airbag (15) through the cooperation of the second exhaust pipe (19) and the third exhaust pipe (20).

7. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 4, characterized in that, The scraping assembly includes a third storage slot (35) opened on the protective cover (4) at the position corresponding to the flexible cleaning cotton (18), a support rod (31) is inserted into the third storage slot (35), and a fourth return spring (36) is provided between the support rod (31) and the third storage slot (35). The support rod (31) has a second storage groove (32) at the position facing the flexible cleaning cotton (18). A scraper (33) is provided in the second storage groove (32), and multiple sets of spaced third return springs (34) are provided between the scraper (33) and the second storage groove (32). The scraper (33) is elastically connected to the support rod (31) through multiple sets of the third return springs (34). The scraper (33) has a beveled surface (37).

8. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 7, characterized in that, A fixing groove (38) is provided on one side of the support rod (31); The third storage slot (35) is provided with a fifth storage slot (47) at the position corresponding to the fixed slot (38). A fixed block (48) is inserted into the fifth storage slot (47), and a fifth return spring (49) is provided between the fixed block (48) and the fifth storage slot (47). The fixed block (48) is elastically inserted into the fixed slot (38) through the fifth return spring (49).

9. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 8, characterized in that, The protective cover (4) is provided with a fourth storage slot (39) at the position corresponding to the storage plate (13), and a second compression block (40) is inserted into the fourth storage slot (39). A first through hole (41) is provided between the fourth storage slot (39) and the fifth storage slot (47). A first pull rope (42) is provided in the first through hole (41). The two ends of the first pull rope (42) are respectively connected to the fixing block (48) and the second pressing block (40).

10. The dynamic monitoring device for weathering stability of foundation pit slopes according to claim 9, characterized in that, The protective cover (4) has a groove (43) at the position corresponding to the support rod (31). A slider (44) is slidably arranged in the groove (43). A second through hole (45) is provided between the groove (43) and the third storage groove (35). A second pull rope (46) is provided inside the second through hole (45). The two ends of the second pull rope (46) are respectively connected to the slider (44) and the support rod (31).

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