Deep foundation pit engineering slope instability early warning device

Abstract

A deep foundation pit engineering slope instability early warning device comprises a monitoring assembly used for detecting slope instability, the monitoring assembly is installed at the telescopic end of a length adjusting assembly, the fixed end of the length adjusting assembly is installed on an angle adjusting assembly, and the angle adjusting assembly is fixed to a building wall. The length adjusting assembly comprises a telescopic rod, a first sleeve, a screw and a mounting plate, one end of the first sleeve is open, the mounting plate is fixed in the other end of the first sleeve, the telescopic rod is slidably inserted into the first sleeve, the end, inserted into the first sleeve, of the telescopic rod is in threaded assembly with one end of the screw, and the other end of the screw is rotationally assembled on the mounting plate. According to the slope instability early warning device, the length adjusting assembly is used, so that the length of the slope instability early warning device can be adjusted according to the distance between a retaining wall and a building, and then the applicability of the slope instability early warning device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of slope protection, and particularly relates to a slope instability warning device for deep foundation pit engineering. Background Art

[0002] Deep foundation pit engineering refers to the excavation and support of foundation pit soil where the excavation depth exceeds 5 meters, or the geological conditions, surrounding environment and underground pipelines are complex when the depth does not exceed 5 meters, or it affects the safety of adjacent buildings. In recent years, due to the rapid development of China's construction industry, a large number of deep foundation pit constructions have emerged. Landslides caused by slope instability generally lead to disastrous consequences: at the lightest, it affects normal production operations, damages buildings, and causes property losses; at the heaviest, it causes casualties, floods urban living areas. Therefore, how to ensure the stability of slopes is one of the important research issues, and it is particularly important to give early warnings of slope instability.

[0003] The existing application number is CN202022203875.5, and the patent name is a slope instability alarm device, which discloses a displacement sensor assembly, including a metal sleeve, a spring located inside the metal sleeve, and a top contact switch. The top contact switch is fixed on the inner bottom wall of the metal sleeve. One end of the deformed steel bar is embedded inside the metal sleeve, and the other end of the deformed steel bar is fixedly connected to the retaining wall. An observation hole is opened on the metal sleeve. One end of the spring is connected to the deformed steel bar, and the other end of the spring is connected to the inner bottom wall of the metal sleeve. The top contact switch is electrically connected to the buzzer alarm. Before the slope undergoes overall instability, during the creep process along the slip surface, the short-distance displacement released is transmitted to the displacement sensor assembly through the retaining wall and the deformed steel bar. When the creep displacement exceeds the displacement threshold of the displacement sensor assembly, the deformed steel bar squeezes the top contact switch to trigger the buzzer alarm.

[0004] The deformed steel bar in the above slope instability alarm device is arranged on the retaining wall, and the fixed base is fixedly connected to the building wall. The distance between the retaining wall and the building is different. Therefore, how to ensure that the slope instability warning device can adapt to retaining walls and buildings with different distances when used at different construction sites and positions, and at the same time can intuitively see the change amount of slope displacement is a technical problem that we urgently need to solve. Content of the Utility Model

[0005] The utility model provides a slope instability warning device for deep foundation pit engineering that can adjust the length of the slope instability warning device and adapt to different distances between retaining walls and buildings to solve the deficiencies of the prior art.

[0006] To achieve the above object, the present utility model first proposes a warning device for slope instability in deep foundation pit engineering, which includes a monitoring component for detecting slope instability. The monitoring component is installed on the telescopic end of a length adjustment component, and the fixed end of the length adjustment component is installed on an angle adjustment component, and the angle adjustment component is fixed on a building wall; the length adjustment component includes a telescopic rod, a first sleeve, a screw rod and a mounting plate. One end of the first sleeve is open, and a mounting plate is fixed inside the other end. The telescopic rod is slidably inserted into the first sleeve. One end of the telescopic rod inserted into the first sleeve is threadedly assembled with one end of the screw rod, and the other end of the screw rod is rotatably assembled on the mounting plate. The screw rod is connected to a crank by a bevel gear mechanism. By rotating the crank to drive the screw rod to rotate, the telescopic of the length adjustment component is realized.

[0007] In this embodiment, the bevel gear mechanism includes a first bevel gear, a second bevel gear and a rotating shaft. A first bevel gear is coaxially fixed on the screw rod. The second bevel gear is rotatably assembled in the first sleeve. The first bevel gear meshes with the second bevel gear. One end of the rotating shaft is coaxially fixed with the second bevel gear, and the other end extends out of the first sleeve and is connected to the crank.

[0008] In this embodiment, the angle adjustment component includes a round roller, a fixing plate and a U-shaped frame. A U-shaped frame is fixedly connected to one side of the fixing plate. A round roller is rotatably assembled in the U-shaped frame. The first sleeve is fixed on the outer side surface of the round roller and is linked with the round roller. Threaded through holes are formed in the U-shaped frame at positions corresponding to the end sides of the round roller, and positioning screws are threadedly connected in the threaded through holes.

[0009] In this embodiment, a plurality of lock holes matching the positioning screws are provided on the end side of the round roller at positions corresponding to the threaded through holes, and the plurality of lock holes are symmetrically arranged around the rotation axis of the round roller.

[0010] In this embodiment, the monitoring component includes a movable rod, a second sleeve and a switch. One end of the second sleeve is provided with an opening communicating with the inner cavity, and the other end is fixed on the telescopic rod. A switch is installed at the bottom of the inner cavity of the second sleeve. The movable rod is slidably inserted into the second sleeve. A spring is arranged in the second sleeve. One end of the spring is fixedly connected to the movable rod, and the other end is fixedly connected to the bottom of the inner cavity of the second sleeve. The switch is electrically connected to a buzzer through a controller, and the buzzer is installed outside the second sleeve.

[0011] In this embodiment, a strip-shaped through hole communicating with the inner cavity is formed on one side of the second sleeve, and a pointer is slidably connected in the strip-shaped through hole. The pointer is fixedly connected to the movable rod; a scale matching the pointer is fixed outside the strip-shaped through hole.

[0012] Due to the adoption of the above structure, the present utility model has the following advantages:

[0013] 1. The device is provided with a length adjustment component. By rotating the crank, the crank drives the telescopic rod to slide in the first sleeve through a bevel gear mechanism, realizing the telescopic movement of the telescopic rod in the first sleeve. When the telescopic rod extends, it drives the monitoring component to move towards the slope, so as to adapt to different distances between the retaining wall and the building.

[0014] 2. The fixing plate of the device is fixed on the building wall through bolts, thereby fixing the whole device. By using the cooperation of the round roller and the positioning screw on the fixing plate, after loosening the positioning screw, by rotating the length adjustment component, the monitoring component is adjusted to a suitable angle, and then the positioning screw is tightened to lock the round roller, thus realizing the adjustment and fixation of the angle.

[0015] 3. The device is also provided with a pointer and a scale. When the slope changes and displaces, the slope will push the movable rod, causing the movable rod to move towards the switch. The movable rod will drive the pointer to move. The cooperation of the pointer and the scale can visually show the change amount of the slope displacement. When the movable rod touches the switch, the buzzer will sound an alarm to achieve the purpose of instability early warning.

[0016] In summary, by using the length adjustment component, the length of the slope instability early warning device can be adjusted according to the distance between the retaining wall and the building, thereby improving the applicability of the slope instability early warning device. At the same time, the cooperation of the pointer and the scale can visually show the change amount of the slope displacement. Brief Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the monitoring component of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the length adjustment component of the present utility model;

[0020] Figure 4 is the structural schematic diagram of the angle adjustment component of the present utility model.

[0021] In the figure: 1. Monitoring component; 11. Movable rod; 12. Second sleeve; 13. Scale; 14. Buzzer; 15. Switch; 16. Spring; 17. Pointer; 18. Strip-shaped through hole; 2. Length adjustment component; 21. Telescopic rod; 22. First sleeve; 23. Screw rod; 24. Mounting plate; 25. First bevel gear; 26. Second bevel gear; 27. Rotating shaft; 28. Crank; 3. Angle adjustment component; 31. Round roller; 32. Fixing plate; 33. U-shaped frame; 34. Threaded through hole; 35. Positioning screw. Detailed Description of the Preferred Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be realized, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0024] Please refer to Figures 1-4 , a warning device for slope instability in deep foundation pit engineering, including a monitoring component 1 for detecting slope instability. The monitoring component is installed on the telescopic end of a length adjustment component 2. The fixed end of the length adjustment component 2 is installed on an angle adjustment component 3, and the angle adjustment component 3 is fixed on a building wall 3.

[0025] The length adjustment component 2 includes a telescopic rod 21, a first sleeve 22, a screw rod 23, and a mounting plate 24. One end of the first sleeve 22 is open, and a mounting plate 24 is fixed inside the other end. The telescopic rod 21 is coaxially and slidably inserted into the first sleeve 22. One end of the telescopic rod 21 inserted into the first sleeve 22 is threadedly assembled with one end of the screw rod 23. The other end of the screw rod 23 is rotatably assembled on the mounting plate 24. The screw rod 23 is connected to a crank 28 disposed outside the first sleeve 22 through a bevel gear mechanism. By rotating the crank 28, the screw rod 23 can be driven to rotate, realizing the expansion and contraction of the length adjustment component 2.

[0026] As Figure 3 shown, further, the bevel gear mechanism includes a first bevel gear 25, a second bevel gear 26, and a rotating shaft 27. A first bevel gear 25 is coaxially fixed on the screw rod 23. The second bevel gear 26 is rotatably assembled inside the first sleeve 22. The first bevel gear 25 meshes with the second bevel gear 26. One end of the rotating shaft 27 is coaxially fixed to the second bevel gear 26, and the other end extends out of the first sleeve 22 and is connected to the crank 28. Specifically, by rotating the crank 28, the crank 28 drives the second bevel gear 26 to rotate through the rotating shaft 27. The second bevel gear 26 drives the first bevel gear 25 to rotate. The first bevel gear 25 drives the screw rod 23 to rotate, causing the screw rod 23 to drive the telescopic rod 21 to slide inside the first sleeve 22, realizing the expansion and contraction of the telescopic rod 21 inside the first sleeve 22. By the extension of the telescopic rod 21, the monitoring component 1 is driven to move towards the slope, thus adapting to different distances between the retaining wall and the building.

[0027] As Figure 4As shown in the figure, the angle adjustment component 3 includes a circular roller 31, a fixing plate 32 and a U-shaped frame 33. A U-shaped frame 33 is fixedly connected to one side of the fixing plate 32. A circular roller 31 is rotatably assembled in the U-shaped frame 33. The first sleeve 22 is fixed on the outer side surface of the circular roller 31 and is linked with the circular roller 31. A threaded through hole 34 is formed in the U-shaped frame 33 at a position corresponding to the end side of the circular roller 3. A positioning screw 35 is threadedly connected in the threaded through hole 34. A plurality of locking holes matching the positioning screw 35 are arranged on the end side of the circular roller 3 at positions corresponding to the threaded through hole 34. The plurality of locking holes are symmetrically arranged with the rotation axis of the circular roller 31 as the center. The fixing plate 32 is fixed to the building wall through bolts, thereby realizing the fixation of the entire device. Then, loosen the positioning screw 35, rotate the length adjustment component 2, adjust the monitoring component 1 to an appropriate angle, and then tighten the positioning screw 35 to lock the circular roller 31, thereby realizing the adjustment and fixation of the angle.

[0028] The monitoring component 1 includes a movable rod 11, a second sleeve 12 and a switch 15. One end of the second sleeve 12 is provided with an opening communicating with the inner cavity, and the other end is coaxially fixed on the telescopic rod 21. A switch 15 is installed at the bottom of the inner cavity of the second sleeve 12. The movable rod 11 is slidably inserted into the second sleeve 12. A spring 16 is arranged in the second sleeve 12. One end of the spring 16 is fixedly connected to the movable rod 11, and the other end is fixedly connected to the bottom of the inner cavity of the second sleeve 12. The switch 15 is electrically connected to the buzzer 14 through a controller, and the buzzer 14 is installed outside the second sleeve 12.

[0029] As Figure 2 shown in the figure, a strip-shaped through hole 18 communicating with the inner cavity is formed on one side of the second sleeve 12. A pointer 17 is slidably connected in the strip-shaped through hole 18. The pointer 17 is fixedly connected to the movable rod 11. A scale 13 matching the pointer 17 is fixed outside the strip-shaped through hole 18. When the slope changes and undergoes displacement, the slope will push the movable rod 11, causing the movable rod 11 to move towards the switch 15. The movable rod 11 will drive the pointer 17 to move. The cooperation of the pointer 17 and the scale 13 can visually show the change amount of the slope displacement. When the movable rod 11 touches the switch 15, the buzzer 14 will emit an alarm to achieve the purpose of instability early warning.

[0030] Working principle: First, fix this device to the building wall by fixing the fixing plate 32, and then adjust the angle. After the angle adjustment is completed, turn the crank 28. The crank 28 drives the second bevel gear 26 to rotate through the rotating shaft 27. The second bevel gear 26 drives the first bevel gear 25 to rotate, and the first bevel gear 25 drives the screw rod 23 to rotate, so that the screw rod 23 drives the telescopic rod 21 to slide in the first sleeve 22, realizing the telescopic movement of the telescopic rod 21 in the first sleeve 22. The telescopic rod 21 extends to drive the monitoring component 1 to move towards the slope, so that the end of the movable rod 11 of the monitoring component 1 abuts against the outside of the slope. The telescopic rod 21 drives the second sleeve 12 and the switch 15 to move, so as to change the distance between the switch 15 and the movable rod 11. When the slope changes and displaces, the slope will push the movable rod 11, causing the movable rod 11 to move towards the switch 15. The movable rod 11 will drive the pointer 17 to move. The cooperation of the pointer 17 and the scale 13 can visually show the change amount of the slope displacement. When the movable rod 11 touches the switch 15, the buzzer 14 will give an alarm, achieving the purpose of instability early warning.

[0031] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An early warning device for slope instability in deep foundation pit engineering, characterized in that: It includes a monitoring component for detecting slope instability. The monitoring component is installed on the telescopic end of the length adjustment component, and the fixed end of the length adjustment component is installed on the angle adjustment component, and the angle adjustment component is fixed on the building wall; the length adjustment component includes a telescopic rod, a first sleeve, a screw rod and a mounting plate. One end of the first sleeve is open, and a mounting plate is fixed inside the other end. The telescopic rod is slidably inserted into the first sleeve. One end of the telescopic rod inserted into the first sleeve is threadedly assembled with one end of the screw rod, and the other end of the screw rod is rotatably assembled on the mounting plate. The screw rod is connected to a crank placed outside the first sleeve through a bevel gear mechanism. By rotating the crank to drive the screw rod to rotate, the telescopic of the length adjustment component is realized.

2. The slope instability warning device for deep foundation pit engineering according to claim 1, characterized in that: The bevel gear mechanism includes a first bevel gear, a second bevel gear and a rotating shaft. A first bevel gear is coaxially fixed on the screw rod. The second bevel gear is rotatably assembled inside the first sleeve. The first bevel gear meshes with the second bevel gear. One end of the rotating shaft is coaxially fixed to the second bevel gear, and the other end extends out of the first sleeve and is connected to the crank.

3. The slope instability warning device for deep foundation pit engineering according to claim 1, characterized in that: The angle adjustment component includes a round roller, a fixing plate and a U-shaped frame. A U-shaped frame is fixedly connected to one side of the fixing plate. A round roller is rotatably assembled inside the U-shaped frame. The first sleeve is fixed on the outer side surface of the round roller and is linked with the round roller. A threaded through hole is opened on the U-shaped frame at a position corresponding to the end side of the round roller, and a positioning screw is threadedly connected inside the threaded through hole.

4. The slope instability warning device for deep foundation pit engineering according to claim 3, characterized in that: A plurality of lock holes matching the positioning screw are arranged on the end side of the round roller at positions corresponding to the threaded through hole, and the plurality of lock holes are symmetrically arranged with the rotation axis of the round roller as the center.

5. The slope instability warning device for deep foundation pit engineering according to claim 1, characterized in that: The monitoring component includes a movable rod, a second sleeve and a switch. One end of the second sleeve is provided with an opening communicating with the inner cavity, and the other end is fixed on the telescopic rod. A switch is installed at the bottom of the inner cavity of the second sleeve. The movable rod is slidably inserted into the second sleeve. A spring is arranged inside the second sleeve. One end of the spring is fixedly connected to the movable rod, and the other end is fixedly connected to the bottom of the inner cavity of the second sleeve. The switch is electrically connected to a buzzer through a controller, and the buzzer is installed outside the second sleeve.

6. The slope instability warning device for deep foundation pit engineering according to claim 5, characterized in that: A strip-shaped through hole communicating with the inner cavity is opened on one side of the second sleeve, and a pointer is slidably connected inside the strip-shaped through hole. The pointer is fixedly connected to the movable rod; a scale matching the pointer is fixed outside the strip-shaped through hole.

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