A construction foundation pit monitoring system

Abstract

The invention relates to the technical field of foundation pit monitoring equipment, and discloses a building foundation pit monitoring system, comprising a supporting mechanism, wherein the supporting mechanism comprises a base, an electromechanical box is arranged at the upper end of the base, a first clamping groove is provided at the upper end of the electromechanical box, and a central axis is fixedly installed at the upper end of the base; a connecting mechanism is also provided at the periphery of the supporting mechanism, wherein the connecting mechanism comprises a first connecting rod rotatably installed inside the first clamping groove, a plurality of equidistantly distributed avoidance grooves are provided on the first connecting rod, when an obstacle or pothole appears on the forward path of the rotating wheel, the rotating wheel adaptively moves up, down, left and right, and can avoid the obstacle without affecting the movement of the device, and with the revolution of the rotating wheel, the data tested by the ranging sensor fluctuates in real time, and the operator judges the flatness of the bottom of the foundation pit through the data monitored by the ranging sensor, which is convenient for real-time monitoring and suitable for the flatness monitoring of small foundation pits.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit monitoring equipment, in particular to a building foundation pit monitoring system. Background Art

[0002] In construction projects, it is often necessary to dig foundation pits. During or after the excavation of the foundation pit, the surrounding soil will exert pressure on the foundation pit, which can easily cause deformation of the foundation pit. It is necessary to monitor the foundation pit through a foundation pit deformation monitoring device. Foundation pit monitoring is an important part of foundation pit construction. Foundation pit detection is to conduct various observations and analyses to predict the extent of the impact on the surrounding environment after further construction, so that people can take corresponding support measures to ensure the stability of the edge of the foundation pit.

[0003] For example, a construction foundation pit monitoring device with announcement number CN220644362U includes a base plate, a level meter is fixedly installed on the upper surface of the base plate, four symmetrical fixing parts are arranged on the base plate, the upper surface of the base plate is fixedly connected to the bottom surface of the lifting box, a motor 1 is fixedly installed on the side of the lifting box, the output end of the motor 1 passes through the side of the lifting box and is connected to the rotating shaft 1, the outer side of the rotating shaft 1 is fixedly connected to the worm gear, the worm gear and the worm are meshed and connected, and the upper surface of the base plate is fixedly connected to the bottom surface of the limit rod. The utility model can lift the worm and the detection box through the lifting box, motor 1, rotating shaft, worm gear, worm and limit rod, which is convenient for detecting the inner wall of the foundation pit at different heights, expanding the scope of use of the foundation pit monitoring device, and solving the problem that the uneven inner wall affects the accuracy of the monitoring result through the detection box, motor 2, bevel gear 1, bevel gear 2, threaded rod, plug rod, sleeve, connecting rod and detection plate, and can intuitively show the basis of whether the foundation pit is deformed with the scale line.

[0004] During use, traditional foundation pit monitoring devices can only monitor deformation of local areas of the foundation pit. The cost of moving the device is high, the monitoring range is small, and during the monitoring process, the size of the scale line needs to be monitored by the operator at all times, which results in high labor costs.

[0005] So we proposed a construction foundation pit monitoring system to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a construction foundation pit monitoring system to solve the problems raised in the above background technology that the traditional foundation pit monitoring device can only monitor the deformation of a local area of ​​the foundation pit during use, the device has a high cost of moving, and the monitoring range is small.

[0007] To achieve the above object, the present invention provides the following technical solution: a construction foundation pit monitoring system, comprising a support mechanism, the support mechanism comprising a base, an electromechanical box is arranged at the upper end of the base, a first clamping groove is opened at the upper end of the electromechanical box, and a central axis is fixedly installed at the upper end of the base;

[0008] The outer periphery of the support mechanism is also provided with a connecting mechanism, the connecting mechanism comprising a first connecting rod rotatably mounted inside the first clamping groove, and the first connecting rod is provided with a plurality of equally spaced avoidance grooves;

[0009] The connecting mechanism is provided with a moving mechanism, which includes a sliding sleeve slidably mounted on the avoidance groove, a middle rod slidably mounted in the middle of the sliding sleeve, a rotating block rotatably mounted on the lower end of the middle rod, and a rotating wheel fixedly mounted on one end of the rotating block.

[0010] Preferably, a sliding groove is provided at the upper end of the electromechanical box, a threaded groove is provided on the central axis, a vertical groove is provided on the side wall of the central axis, a first gear is provided inside the electromechanical box, a second gear is meshed and installed at one end of the first gear, and the middle part of the second gear is fixedly connected to the middle part of the electromechanical box.

[0011] Preferably, a monitoring mechanism is provided at the upper end of the supporting mechanism, and the monitoring mechanism comprises a mounting box rotatably mounted on the upper end of the central axis, a second clamping groove is provided on the outer periphery of the mounting box, and a prism is fixedly mounted on the upper end of the mounting box.

[0012] Preferably, a pressing mechanism is provided on the periphery of the supporting mechanism, and the pressing mechanism comprises a second connecting rod rotatably mounted on one side of the second clamping groove, and a pressing roller is rotatably mounted on one end of the second connecting rod.

[0013] Preferably, the first support rods are rotatably mounted on the inner walls of the two second connecting rods, a sliding plate is commonly connected between the two first support rods, a sliding block is fixedly mounted on the inner wall of the sliding plate, the sliding block is slidably connected to the vertical groove, a plug-in rod is fixedly mounted on the lower end of the sliding block, a conical block is fixedly mounted on the lower end of the plug-in rod, a hydraulic rod is fixedly mounted on the upper end of the sliding plate, and the hydraulic rod is arranged at the lower end of the top wall of the central shaft.

[0014] Preferably, the moving mechanism also includes a ranging sensor arranged at the upper end of the middle rod, an inner cavity is opened inside the middle rod, a conical tube is fixedly installed at the lower end of the middle rod, the conical tube is connected to the inner cavity, an elastic member is provided on one side of the sliding sleeve, and one end of the elastic member is also fixedly connected to the inner wall of the avoidance groove.

[0015] Preferably, fan blades are also installed on the rotating block, and the fan blades are rotatably installed in the inner cavity.

[0016] Preferably, a driving mechanism is also provided on one side of the moving mechanism, and the driving mechanism includes a spiral sleeve slidably mounted on the outer periphery of the central axis, a slider is fixedly mounted on the inner wall of the spiral sleeve, the slider is slidably connected to the threaded groove, a second support rod is commonly connected between the spiral sleeve and the first connecting rod, a third support rod is rotatably mounted on one side of the spiral sleeve, and one end of the third support rod is also slidably mounted in the slide groove.

[0017] Preferably, an adsorption mechanism is further provided on one side of the moving mechanism, and the adsorption mechanism includes a first pipe arranged in the inner cavity, one end of a plurality of the first pipes is commonly connected to a second pipe, and one side of two of the second pipes is connected to a third pipe.

[0018] Preferably, a limiting mechanism is also provided on one side of the moving mechanism, and the limiting mechanism includes a limiting sleeve fixedly mounted on one side of the rotating wheel, a limiting rod is commonly installed between the two limiting sleeves, clamping blocks are fixedly mounted on both sides of the limiting rod, a magnetic suction part is fixedly mounted on the outer periphery of the clamping block, and an electromagnetic block is fixedly mounted on the inner wall of the limiting sleeve.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When the device is in use, the base is vertically installed in the middle of the building foundation pit. When the first connecting rod is unfolded to be parallel to the ground, the first connecting rod rotates in the foundation pit together with the central axis, and the rotating wheel rotates on the ground, which ensures the stability of the first connecting rod and the central axis. When the bottom wall of the foundation pit is uneven, that is, obstacles or potholes appear on the way forward of the rotating wheel, the rotating wheel moves up and down and left and right under the action of the sliding sleeve and the avoidance groove, and can avoid obstacles without affecting the movement of the device. With the revolution of the rotating wheel, the data tested by the ranging sensor fluctuates in real time. The operator judges the flatness of the bottom of the foundation pit through the data monitored by the ranging sensor, which is convenient for real-time monitoring and suitable for flatness monitoring of small foundation pits.

[0021] 2. After the second connecting rod is unfolded, the pressure roller naturally droops under the condition of gravity, and the pressure roller can always fit on the inner wall of the foundation pit, further ensuring the stability of the device. When the hydraulic rod is shortened, the sliding plate moves downward along the slide groove, and the two first support rods move upward, which can automatically drive the second connecting rod to extend, and provide a driving force for the movement of the second connecting rod.

[0022] 3. A water pump is connected to one side of the third pipeline. After the water pump is turned on, the third pipeline, the second pipeline and the first pipeline can generate suction, which is convenient for pumping out the accumulated water on the ground, and can reduce the impact on the monitoring of the device. The rotating wheel always rotates on the ground. During the operation, it also drives the fan blades to rotate. The fan blades have a certain blocking effect during the rotation, which can prevent stones and other materials from being sucked into the first pipeline. After the accumulated water is pumped out, the resistance to the operation of the device is reduced, and the accuracy of the monitoring data is increased.

[0023] 4. When the rotating wheel revolves, the limit rod and the clamping block adaptively rotate in the limit sleeve to ensure the connectivity between multiple rotating wheels. When the data monitored by the ranging sensor exceeds the set threshold, the motor is triggered to stop rotating, and the adjacent rotating wheels cannot rotate and are fixed here. At this time, the motor is turned off, and the operator can be reminded that there is a defect here, which serves as a warning.

[0024] 5. After the hydraulic rod is shortened, the second connecting rod and the pressure roller are in contact with the inner wall of the foundation pit. When the magnetic suction piece and the electromagnetic block are adsorbed together, the adjacent rotating wheels cannot rotate, but can roll at the same time. The device can move along the foundation pit and can be driven to move to other areas of the foundation pit. At the same time, it does not affect the real-time monitoring of the ranging sensor, which increases the diversity of the monitoring of the device and is suitable for large-area foundation pit monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the monitoring mechanism and the pressing mechanism structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the supporting mechanism structure of the present invention;

[0028] Figure 4 is a cross-sectional view of the support mechanism of the present invention;

[0029] Figure 5 It is a cross-sectional view of the connecting mechanism and the moving mechanism of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the mobile mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the rotating wheel of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0033] In the figure: 1, support mechanism; 11, base; 12, electromechanical box; 13, first clamping groove; 14, slide groove; 15, central axis; 16, threaded groove; 17, vertical groove; 18, first gear; 19, second gear; 2, connecting mechanism; 21, first connecting rod; 22, avoidance groove; 3, monitoring mechanism; 31, installation box; 32, second clamping groove; 33, prism; 4, pressing mechanism; 41, second connecting rod; 42, pressing roller; 43, first support rod; 44, sliding plate; 45, sliding block; 46, plug rod; 47, tapered block; 4 8. Hydraulic rod; 5. Moving mechanism; 51. Sliding sleeve; 52. Middle rod; 53. Distance measuring sensor; 54. Inner cavity; 55. Conical tube; 56. Rotating block; 57. Rotating wheel; 58. Fan blade; 59. Elastic member; 6. Driving mechanism; 61. Spiral sleeve; 62. Sliding block; 63. Second support rod; 64. Third support rod; 7. Adsorption mechanism; 71. First pipeline; 72. Second pipeline; 73. Third pipeline; 8. Limiting mechanism; 81. Limiting sleeve; 82. Limiting rod; 83. Clamping block; 84. Magnetic member; 85. Electromagnetic block. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1-Figure 6 A construction foundation pit monitoring system includes a supporting mechanism 1, and the supporting mechanism 1 includes a base 11. The base 11 is used to support the device. An electromechanical box 12 is arranged on the upper end of the base 11. A motor is arranged in the electromechanical box 12 to drive the device. A first clamping groove 13 is opened on the upper end of the electromechanical box 12, and a central axis 15 is fixedly installed on the upper end of the base 11.

[0036] A connecting mechanism 2 is also provided on the periphery of the supporting mechanism 1, and the connecting mechanism 2 includes a first connecting rod 21 rotatably installed inside the first clamping groove 13. Two first connecting rods 21 are provided, and the two first connecting rods 21 can be rotated to be parallel to the central axis 15, which is the initial state of the device, which is convenient for storage and carrying. The two first connecting rods 21 can also be unfolded to be parallel to the ground, which is the working state of the device, and is used to check whether the bottom wall of the foundation pit is flat. A plurality of equidistant avoidance grooves 22 are provided on the first connecting rod 21.

[0037] A moving mechanism 5 is provided on the connecting mechanism 2, and the moving mechanism 5 includes a sliding sleeve 51 slidably installed on the avoidance groove 22, a middle rod 52 is slidably installed in the middle of the sliding sleeve 51, a rotating block 56 is rotatably installed at the lower end of the middle rod 52, and a rotating wheel 57 is fixedly installed at one end of the rotating block 56. The rotating wheel 57 can move up and down in the sliding sleeve 51, and the rotating wheel 57 can also move left and right in the avoidance groove 22 through the sliding sleeve 51.

[0038] When the device is in use, the base 11 is vertically installed in the middle of the building foundation pit, and the motor in the electromechanical box 12 drives the electromechanical box 12 and the central axis 15 to rotate. When the first connecting rod 21 is unfolded to be parallel to the ground, the first connecting rod 21 rotates in the foundation pit together with the central axis 15, and the rotating wheel 57 rotates on the ground, thereby ensuring the stability of the first connecting rod 21 and the central axis 15. The positions of the sliding sleeves 51 on the two first connecting rods 21 are staggered, and the positions of the two rotating wheels 57 are also inconsistent, thereby increasing the contact area between the device and the ground, further ensuring the stability of the device.

[0039] When the rotating wheel 57 is moving, if the bottom wall of the foundation pit is uneven, that is, there are obstacles or potholes on the way forward of the rotating wheel 57, under the action of the sliding sleeve 51 and the avoidance groove 22, the rotating wheel 57 moves up and down and left and right to avoid the obstacles without affecting the movement of the device.

[0040] The mobile mechanism 5 also includes a distance sensor 53 arranged at the upper end of the middle rod 52. The distance sensor 53 is a laser distance sensor with a model number of VL53L1X. When the rotating wheel 57 and the middle rod 52 move up and down, the data detected by the distance sensor 53 will deviate. As the rotating wheel 57 revolves, the data tested by the distance sensor 53 fluctuates in real time. The operator judges the flatness of the bottom of the foundation pit through the data monitored by the distance sensor 53, which is convenient for real-time monitoring.

[0041] Example 2: Please refer to Figure 2-Figure 6 A vertical groove 17 is provided on the side wall of the central axis 15, a first gear 18 is arranged inside the electromechanical box 12, the motor is fixedly mounted on the base 11, and its output end is connected to the first gear 18, which can drive the first gear 18 to rotate after starting, a second gear 19 is meshedly mounted on one end of the first gear 18, and the middle part of the second gear 19 is fixedly connected to the middle part of the electromechanical box 12, after the motor is turned on, the second gear 19, the electromechanical box 12, and the first connecting rod 21 can rotate, which plays a driving role in the movement of the rotating wheel 57 and the ranging sensor 53.

[0042] A monitoring mechanism 3 is provided at the upper end of the supporting mechanism 1. The monitoring mechanism 3 includes a mounting box 31 rotatably mounted on the upper end of the central axis 15. A prism 33 is fixedly mounted on the upper end of the mounting box 31. The prism 33 is located at the top of the device for easy operation to observe the prism 33.

[0043] A second clamping groove 32 is provided on the periphery of the installation box 31, and a pressing mechanism 4 is provided on the periphery of the support mechanism 1. The pressing mechanism 4 includes a second connecting rod 41 rotatably installed on one side of the second clamping groove 32, and a pressing roller 42 is rotatably installed on one end of the second connecting rod 41. The second connecting rod 41 can rotate about the installation box 31, and the pressing roller 42 can rotate about the second connecting rod 41. In the initial state, the second connecting rod 41 is parallel to the central axis 15 and fits each other. After unfolding, the pressing roller 42 naturally droops under the condition of gravity. The cross-section of the foundation pit is generally a trapezoidal structure. When the upper end of the second connecting rod 41 contacts the inner wall of the foundation pit, the pressing roller 42 can always fit on the inner wall of the foundation pit, which further ensures the stability of the device. If the second connecting rod 41 is unfolded before the first connecting rod 21 is unfolded, the device can be landed in the center of the foundation pit for easy use.

[0044] A slide groove 14 is also provided at the upper end of the electromechanical box 12. First support rods 43 are rotatably installed on the inner walls of the two second connecting rods 41. A sliding plate 44 is commonly connected between the two first support rods 43. A sliding block 45 is fixedly installed on the inner wall of the sliding plate 44. The sliding block 45 is slidably connected to the vertical groove 17. A hydraulic rod 48 is fixedly installed on the upper end of the sliding plate 44. The upper end of the hydraulic rod 48 is arranged at the lower end of the top wall of the central axis 15.

[0045] In the initial state, the hydraulic rod 48 is in an extended state. When it is shortened, the sliding plate 44 moves downward along the slide groove 14, and the two first support rods 43 move upward, which can automatically drive the second connecting rod 41 to extend, thereby providing a driving force for the movement of the second connecting rod 41.

[0046] A plug-in rod 46 is fixedly installed at the lower end of the sliding block 45, and a conical block 47 is fixedly installed at the lower end of the plug-in rod 46. The device can be inserted into the soil of the foundation pit through the plug-in rod 46 and the conical block 47. Therefore, the device cannot move during the monitoring process, which further ensures the stability of the device.

[0047] Example 3: Please refer to Figure 3-Figure 6 An elastic member 59 is provided on one side of the sliding sleeve 51, and one end of the elastic member 59 is also fixedly connected to the inner wall of the avoidance groove 22. When the rotating wheel 57 avoids obstacles, the sliding sleeve 51 moves left and right in the avoidance groove 22. The elastic member 59 is a component with an elastic structure such as a spring or rubber, and has a certain elasticity. When the sliding sleeve 51 moves, the elastic member 59 will be compressed or stretched, and it can also rebound and reset immediately under the reaction of the elastic member 59, and has a certain buffering force.

[0048] A thread groove 16 is provided on the central axis 15, and a driving mechanism 6 is also provided on one side of the moving mechanism 5. The driving mechanism 6 includes a spiral sleeve 61 slidably mounted on the outer periphery of the central axis 15, and three sliders 62 are fixedly mounted on the inner wall of the spiral sleeve 61. The three sliders 62 all slide in the thread groove 16. The inner wall of the spiral sleeve 61 is threadedly connected to the central axis 15 through the three sliders 62, and a second support rod 63 is commonly connected between the spiral sleeve 61 and the first connecting rod 21.

[0049] In the initial state, the first connecting rod 21 is fitted with the central axis 15. After the motor is turned on, the second gear 19 and the electromechanical box 12 rotate, and the position of the central axis 15 remains unchanged. The spiral sleeve 61 moves downward in a straight line along the central axis 15 under the action of the slider 62 and the threaded groove 16, thereby driving the second support rod 63 and the first connecting rod 21 to unfold. When the three sliders 62 of the spiral sleeve 61 slide to the lowermost end, the first connecting rod 21 is exactly parallel to the ground. At this time, the second gear 19 and the electromechanical box 12 continue to be driven to rotate, and the first connecting rod 21 and the rotating wheel 57 can rotate with the central axis 15 as the center. After the installation of this device is completed, the device can be started remotely, and the same operation can achieve two effects in one go. There is no need to adjust the switch additionally, which is convenient for monitoring.

[0050] A third support rod 64 is rotatably mounted on one side of the spiral sleeve 61, and one end of the third support rod 64 is slidably mounted in the slide groove 14. When the spiral sleeve 61 moves linearly downward along the central axis 15, the third support rod 64 is simultaneously unfolded, and the triangle has stability, further increasing the stability of the device.

[0051] Example 4: Please refer to Figure 3-Figure 7 A suction mechanism 7 is also provided on one side of the moving mechanism 5. The suction mechanism 7 includes a first pipe 71 provided in the inner cavity 54. One end of the plurality of first pipes 71 is commonly connected to a second pipe 72. One side of the two second pipes 72 is connected to a third pipe 73. One side of the third pipe 73 is connected to a water pump. After the water pump is turned on, the third pipe 73, the second pipe 72 and the first pipe 71 can all generate suction. The lower end of the first pipe 71 is vertically aligned with the ground and rotates with the first connecting rod 21. The contact area with the ground is large, which is convenient for pumping away the accumulated water on the ground and can reduce the impact on the monitoring of the device.

[0052] An inner cavity 54 is provided inside the middle rod 52, and a conical tube 55 is fixedly installed at the lower end of the middle rod 52. The conical tube 55 is connected to the inner cavity 54, and the end close to the ground has a larger diameter, which can absorb a larger area of ​​the ground, further increasing the range of water pumping.

[0053] The rotating block 56 is also provided with a fan blade 58, which is rotatably installed in the inner cavity 54. The rotating wheel 57 always rotates on the ground, and during operation, the fan blade 58 is also driven to rotate. The fan blade 58 has a certain blocking property during rotation, which can prevent stones and other materials from being sucked into the first pipe 71. After the accumulated water is pumped out, the resistance to the operation of the device is reduced, and the accuracy of the monitoring data is increased.

[0054] Example 5: Please refer to Figure 3-Figure 8 A limiting mechanism 8 is also provided on one side of the moving mechanism 5. The limiting mechanism 8 includes a limiting sleeve 81 fixedly mounted on one side of the rotating wheel 57. A limiting rod 82 is installed between the two limiting sleeves 81. A clamping block 83 is fixedly mounted on both sides of the limiting rod 82. A magnetic attraction member 84 is fixedly mounted on the outer periphery of the clamping block 83. An electromagnetic block 85 is fixedly mounted on the inner wall of the limiting sleeve 81.

[0055] The electromagnetic block 85 is electrically connected to the motor, and the operator sets a threshold on the distance sensor 53 in advance. When the data monitored by the distance sensor 53 is within the set threshold, the rotating wheels 57 are arranged in parallel. When the rotating wheels 57 revolve, since the diameters of the path circles traveled by the multiple rotating wheels 57 are not the same, the deflection directions of adjacent rotating wheels 57 are different, and then the limit rod 82 and the clamping block 83 adaptively rotate in the limit sleeve 81, thereby ensuring the connectivity between the multiple rotating wheels 57.

[0056] When the data monitored by the distance measuring sensor 53 exceeds the set threshold, the motor can be triggered to stop rotating, and the adjacent rotating wheel 57 cannot rotate and is fixed there. At this time, the motor is turned off, and the operator can be reminded that there is a defect here, which serves as a warning.

[0057] After the hydraulic rod 48 is shortened, the second connecting rod 41 and the pressure roller 42 are in contact with the inner wall of the foundation pit. When the magnetic suction piece 84 and the electromagnetic block 85 are adsorbed together, the adjacent rotating wheels 57 cannot rotate, but can roll at the same time. The device can move along the foundation pit and can be driven to move to other areas of the foundation pit. At the same time, it does not affect the real-time monitoring of the ranging sensor 53, thereby increasing the diversity of monitoring of the device.

[0058] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction foundation pit monitoring system, comprising a support mechanism (1), characterized in that: The support mechanism (1) comprises a base (11), an electromechanical box (12) is arranged at the upper end of the base (11), a first clamping groove (13) is opened at the upper end of the electromechanical box (12), and a central axis (15) is fixedly mounted at the upper end of the base (11); A connecting mechanism (2) is also provided on the outer periphery of the supporting mechanism (1), the connecting mechanism (2) comprising a first connecting rod (21) rotatably mounted inside the first clamping groove (13), the first connecting rod (21) being provided with a plurality of equally spaced avoidance grooves (22); The connecting mechanism (2) is provided with a moving mechanism (5), the moving mechanism (5) comprising a sliding sleeve (51) slidably mounted on the avoidance groove (22), a middle rod (52) slidably mounted in the middle of the sliding sleeve (51), a rotating block (56) rotatably mounted at the lower end of the middle rod (52), and a rotating wheel (57) fixedly mounted at one end of the rotating block (56); The upper end of the electromechanical box (12) is also provided with a slide groove (14), the central axis (15) is provided with a threaded groove (16), the side wall of the central axis (15) is provided with a vertical groove (17), a first gear (18) is arranged inside the electromechanical box (12), one end of the first gear (18) is meshedly mounted with a second gear (19), and the middle part of the second gear (19) is fixedly connected to the middle part of the electromechanical box (12); The moving mechanism (5) further comprises a distance measuring sensor (53) arranged at the upper end of the middle rod (52); an inner cavity (54) is provided inside the middle rod (52); a conical tube (55) is fixedly mounted on the lower end of the middle rod (52); the conical tube (55) is communicated with the inner cavity (54); an elastic member (59) is arranged on one side of the sliding sleeve (51); one end of the elastic member (59) is also fixedly connected to the inner wall of the avoidance groove (22).

2. A construction foundation pit monitoring system according to claim 1, characterized in that: A monitoring mechanism (3) is provided at the upper end of the support mechanism (1), the monitoring mechanism (3) comprising a mounting box (31) rotatably mounted on the upper end of the central axis (15), a second clamping groove (32) being provided on the outer periphery of the mounting box (31), and a prism (33) being fixedly mounted on the upper end of the mounting box (31).

3. A construction foundation pit monitoring system according to claim 2, characterized in that: A pressing mechanism (4) is provided on the outer periphery of the support mechanism (1), the pressing mechanism (4) comprising a second connecting rod (41) rotatably mounted on one side of the second clamping groove (32), and a pressing roller (42) is rotatably mounted on one end of the second connecting rod (41).

4. A construction foundation pit monitoring system according to claim 3, characterized in that: A first support rod (43) is rotatably mounted on the inner walls of the two second connecting rods (41); a sliding plate (44) is commonly connected between the two first support rods (43); a sliding block (45) is fixedly mounted on the inner wall of the sliding plate (44); the sliding block (45) is slidably connected to the vertical groove (17); a plug-in rod (46) is fixedly mounted on the lower end of the sliding block (45); a conical block (47) is fixedly mounted on the lower end of the plug-in rod (46); a hydraulic rod (48) is fixedly mounted on the upper end of the sliding plate (44); the hydraulic rod (48) is arranged at the lower end of the top wall of the central shaft (15).

5. A construction foundation pit monitoring system according to claim 1, characterized in that: A fan blade (58) is also mounted on the rotating block (56), and the fan blade (58) is rotatably mounted in the inner cavity (54).

6. A construction foundation pit monitoring system according to claim 1, characterized in that: A driving mechanism (6) is also provided on one side of the moving mechanism (5), and the driving mechanism (6) comprises a spiral sleeve (61) slidably mounted on the outer periphery of the central shaft (15), a sliding block (62) is fixedly mounted on the inner wall of the spiral sleeve (61), and the sliding block (62) is slidably connected to the thread groove (16), a second support rod (63) is commonly connected between the spiral sleeve (61) and the first connecting rod (21), and a third support rod (64) is rotatably mounted on one side of the spiral sleeve (61), and one end of the third support rod (64) is slidably mounted in the slide groove (14).

7. A construction pit monitoring system according to claim 1, characterized in that: An adsorption mechanism (7) is also provided on one side of the moving mechanism (5), and the adsorption mechanism (7) comprises a first pipe (71) provided in the inner cavity (54), one end of a plurality of the first pipes (71) being commonly connected to a second pipe (72), and one side of two of the second pipes (72) being connected to a third pipe (73).

8. A construction foundation pit monitoring system according to claim 1, characterized in that: A limiting mechanism (8) is also provided on one side of the moving mechanism (5), the limiting mechanism (8) comprising a limiting sleeve (81) fixedly mounted on one side of the rotating wheel (57), a limiting rod (82) being mounted between the two limiting sleeves (81), a clamping block (83) being fixedly mounted on both sides of the limiting rod (82), a magnetic attraction member (84) being fixedly mounted on the outer periphery of the clamping block (83), and an electromagnetic block (85) being fixedly mounted on the inner wall of the limiting sleeve (81).

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