Foundation pit displacement monitoring and early warning device

Abstract

The utility model relates to the technical field of safety monitoring and early warning devices, in particular to a foundation pit displacement monitoring and early warning device which comprises a servo motor, an alarm, a distance measuring sensor, a winding roll, a stay wire and the like. A servo motor is arranged on the base, an output shaft of the servo motor is sleeved with a winding roll, a pull wire is wound on the winding roll, the tail end of the pull wire is connected to the base, a distance measuring sensor is installed on the connecting base, and the alarm is electrically connected with the distance measuring sensor. The buoy floats on the liquid surface of the foundation pit, so that the water level height in the foundation pit can be visually monitored and checked; and through the cooperative effect of the distance measuring sensor, the buoy and the alarm, the liquid level condition in the foundation pit can be automatically monitored and early warned, and then the displacement condition of the foundation pit can be monitored in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of safety monitoring and early warning devices, in particular to a foundation pit displacement monitoring and early warning device. Background Art

[0002] Foundation pit engineering is an indispensable part of modern construction projects. For example, basements, underground garages, subways, etc. all require foundation pit excavation. Due to geological conditions, soil changes, and the influence of the surrounding environment, foundation pits may shift during construction, leading to ground subsidence, cracks, and even structural tilt. The early warning device monitors the displacement of the foundation pit in real time. When the displacement exceeds the preset threshold, it can automatically send out a warning signal to remind construction personnel to take timely measures.

[0003] After searching, the authorization announcement date is April 2, 2024, and the authorization announcement is a utility model patent CN220708474U, which discloses a deep foundation pit safety monitoring and early warning device, including a base, the top of the outer wall of the base is fixedly connected to a support column, the outer wall of the support column is slidably connected to a sliding column, the outer side wall of the sliding column is fixedly connected to a handle, the inner wall of the handle is elastically connected to an insert block through a limit spring, the top of the outer wall of the sliding column is fixedly connected to a fixed plate, the outer side wall of the fixed plate is fixedly connected to a liquid level sensor, and the top of the outer wall of the fixed plate is fixedly connected to an early warning motor. Although the device can monitor the water level in the foundation pit through the water level sensor, it is not intuitive enough, and when the water level is inconsistent, it is necessary to manually adjust the position height of the upper component of the sliding column, which is troublesome to operate and not convenient enough.

[0004] Therefore, it is necessary to propose an improved foundation pit displacement monitoring and early warning device to solve the above technical problems. Utility Model Content

[0005] In order to overcome some shortcomings of the existing device during use, it is necessary to improve it. The technical problem is to provide an improved foundation pit displacement monitoring and early warning device.

[0006] A foundation pit displacement monitoring and early warning device comprises a base, a guide rod, a movable seat, a servo motor and an alarm, wherein the base is provided with a guide rod, the guide rod is axially slidably sleeved with a movable seat, a servo motor is installed in the middle of the movable seat, an alarm is arranged on the front side of the movable seat, and also comprises a winding drum, a pull wire, a support, a fixed pulley, a connecting seat, a distance measuring sensor, a sliding seat and a buoy, the output shaft of the servo motor is sleeved with a winding drum, a pull wire is wound around the winding drum, and the end of the pull wire is connected to the base, the top of the guide rod is connected to a support, the bottom of the support is provided with a fixed pulley, and the middle part of the pull wire is wound around the fixed pulley, a connecting seat is arranged on the left side of the movable seat, a distance measuring sensor is installed on the connecting seat, and the alarm is electrically connected to the distance measuring sensor, a sliding seat is slidably sleeved with a sliding seat on the guide rod, and the sliding seat is located below the movable seat, buoys are symmetrically arranged on the sliding seat, and the buoy is located directly below the distance measuring sensor.

[0007] As an improvement of the above solution, the surface of the buoy is coated with a reflective layer.

[0008] As an improvement of the above solution, the distance measuring sensor is an infrared distance measuring sensor.

[0009] As an improvement of the above solution, a guide groove is axially provided on the guide rod for vertically guiding the movable seat and the sliding seat.

[0010] As an improvement of the above scheme, it also includes a connecting block and a guide sleeve. The connecting block is arranged on the right side of the movable seat, the connecting block is connected to the guide sleeve, and the pull wire passes through the guide sleeve.

[0011] As an improvement of the above solution, a lubricating coating is applied on the inner side of the guide sleeve.

[0012] The beneficial effects of the utility model are as follows: by the buoy floating on the liquid surface of the foundation pit, it is facilitating intuitive monitoring and viewing of the water level height in the foundation pit; and by the coordinated action of the ranging sensor, the buoy and the alarm, the liquid level condition in the foundation pit can be automatically monitored and warned, which is facilitating real-time monitoring of the displacement condition of the foundation pit; by controlling the servo motor to make the cable reel reel up or release the cable, it is facilitating convenient adjustment of the height of the movable seat and the position components thereon, without the need for manual adjustment, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is the right view of the utility model.

[0015] Figure 3It is a front view of the utility model.

[0016] Figure 4 The utility model is a schematic diagram of the connection structure of the movable seat, the servo motor, the winding drum and the pulling wire.

[0017] Figure 5 It is a cross-sectional view of the guide sleeve of the utility model.

[0018] Explanation of the reference numerals: 1: base, 2: guide rod, 20: guide groove, 3: movable seat, 4: servo motor, 5: winding reel, 6: pull wire, 7: support, 8: fixed pulley, 9: connecting seat, 10: distance measuring sensor, 11: sliding seat, 12: buoy, 13: alarm, 14: connecting block, 15: guide sleeve. DETAILED DESCRIPTION

[0019] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] Embodiment: The utility model provides a foundation pit displacement monitoring and early warning device, such as Figure 1-Figure 5 As shown, it includes a base 1, a guide rod 2, a movable seat 3, a servo motor 4, a winding drum 5, a pull wire 6, a support 7, a fixed pulley 8, a connecting seat 9, a distance measuring sensor 10, a sliding seat 11, a buoy 12 and an alarm 13. The base 1 is provided with a guide rod 2, and the guide rod 2 is provided with a movable seat 3 slidably sleeved along the axial direction. A servo motor 4 is installed in the middle of the movable seat 3, and a winding drum 5 is mounted on the output shaft of the servo motor 4. The pull wire 6 is wound on the winding drum 5, and the end of the pull wire 6 is connected to the base 1. The servo motor 4 is controlled to drive the winding drum 5 to rotate forward or reverse, so that the pull wire 6 can be wound or released, which is conducive to conveniently adjusting the position height of the movable seat 3. It is easy to use and does not require manual adjustment. The top of the guide rod 2 is connected to the support 7, and the bottom of the support 7 is provided with a fixed pulley 8. The middle part of 6 is wound around the fixed pulley 8, and a connecting seat 9 is arranged on the left side of the moving seat 3. A distance sensor 10 is installed on the connecting seat 9, and the distance sensor 10 is an infrared distance sensor 10, which can accurately monitor the water level changes in the foundation pit in real time. A sliding seat 11 is slidably sleeved on the guide rod 2, and the sliding seat 11 is located below the moving seat 3. A guide groove 20 adapted to the moving seat 3 and the sliding seat 11 is axially opened on the guide rod 2, which is conducive to the smooth up and down movement adjustment of the moving seat 3 and the sliding seat 11. A buoy 12 is symmetrically arranged on the sliding seat 11, and the buoy 12 is located directly below the distance sensor 10. The surface of the buoy 12 is coated with a reflective layer, which is conducive to intuitively checking the changes in the water level in the foundation pit. An alarm 13 is arranged on the front side of the moving seat 3, and the alarm 13 is electrically connected to the distance sensor 10.

[0021] In addition, if Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, it also includes a connecting block 14 and a guide sleeve 15. The connecting block 14 is arranged on the right side of the movable seat 3. The guide sleeve 15 is connected to the connecting block 14, and the pull wire 6 passes through the guide sleeve 15, which is beneficial to smoothly guide the pull wire 6. The inner side of the guide sleeve 15 is coated with a lubricating coating, which is beneficial to reduce the wear between the pull wire 6 and the inner wall of the guide sleeve 15.

[0022] When in use, the base 1 can be fixedly installed in the foundation pit by bolts, and the buoy 12 floats on the water surface, so that the water level in the foundation pit can be easily checked. When the foundation pit has displacement such as ground settlement, cracks or even structural tilt, the water level in the foundation pit will change accordingly. Then, the infrared light emitted by the ranging sensor 10 is irradiated on the buoy 12 and then reflected back to the signal receiver, so that the liquid level parameters in the foundation pit can be measured more accurately. When the liquid level value deviates from the preset value, a signal will be transmitted to the alarm 13 through the controller, so that the alarm 13 can issue an alarm reminder, which is conducive to automatic monitoring and early warning of the liquid level to ensure the safety of construction personnel; and by controlling the servo motor 4 so that the winding drum 5 can reel or release the pull wire 6, it can drive the moving seat 3, the ranging sensor 10 and the alarm 13 to adjust the position, which is conducive to conveniently adjusting the height of the ranging sensor 10 to adapt to different water levels, without manual adjustment, and more convenient to use.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundation pit displacement monitoring and early warning device, comprising a base (1), a guide rod (2), a movable seat (3), a servo motor (4) and an alarm (13), wherein the base (1) is provided with a guide rod (2), a movable seat (3) is axially slidably sleeved on the guide rod (2), a servo motor (4) is installed in the middle of the movable seat (3), and an alarm (13) is provided on the front side of the movable seat (3), wherein: The invention also comprises a winding drum (5), a pulling wire (6), a support (7), a fixed pulley (8), a connecting seat (9), a distance measuring sensor (10), a sliding seat (11) and a buoy (12); the winding drum (5) is mounted on the output shaft of the servo motor (4); the pulling wire (6) is wound on the winding drum (5); the end of the pulling wire (6) is connected to the base (1); the top of the guide rod (2) is connected to the support (7); the bottom of the support (7) is provided with a fixed pulley (8); the middle of the pulling wire (6) is Wrapped around the fixed pulley (8), a connecting seat (9) is arranged on the left side of the movable seat (3), a distance sensor (10) is installed on the connecting seat (9), and the alarm (13) is electrically connected to the distance sensor (10), a sliding seat (11) is slidably sleeved on the guide rod (2), and the sliding seat (11) is located below the movable seat (3), and a buoy (12) is symmetrically arranged on the sliding seat (11), and the buoy (12) is located directly below the distance sensor (10).

2. The foundation pit displacement monitoring and early warning device according to claim 1 is characterized in that: The surface of the buoy (12) is coated with a reflective layer.

3. The foundation pit displacement monitoring and early warning device according to claim 1 is characterized in that: The distance measuring sensor (10) is an infrared distance measuring sensor (10).

4. The foundation pit displacement monitoring and early warning device according to claim 1 is characterized in that: A guide groove (20) for vertically guiding the movable seat (3) and the sliding seat (11) is provided on the guide rod (2) in the axial direction.

5. The foundation pit displacement monitoring and early warning device according to claim 1 is characterized in that: It also comprises a connecting block (14) and a guide sleeve (15); the connecting block (14) is arranged on the right side of the movable seat (3); the connecting block (14) is connected to the guide sleeve (15), and the pull wire (6) passes through the guide sleeve (15).

6. The foundation pit displacement monitoring and early warning device according to claim 5 is characterized in that: The inner side of the guide sleeve (15) is coated with a lubricating coating.

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