Foundation pit settlement monitoring device

Abstract

The utility model provides a foundation pit settlement monitoring device which is characterized in that a transmission shaft horizontally and rotatably penetrates through a settlement pipe, a ratchet wheel is fixedly arranged at the part, outside the settlement pipe, of the transmission shaft, a rocker arm is fixedly arranged at the end, outside the settlement pipe, of the transmission shaft, and a gear is coaxially and fixedly arranged at the end, inside the settlement pipe, of the transmission shaft; a rack is fixedly arranged on the surface of one connecting rod in the vertical direction, the rack is in meshing transmission with the gear, and the rack slidably penetrates through the sedimentation pipe; a motor is fixedly mounted on the settling pipe, a connecting shaft is fixedly arranged on an output shaft of the motor, and a pawl is rotationally arranged at the other end of the connecting shaft and is in transmission fit with the ratchet wheel; a torsion spring is arranged between the connecting shaft and the pawl, one end of the torsion spring is fixedly connected with the connecting shaft, and the other end is fixedly connected with the pawl. In the upward sliding process of the contact base, the ratchet wheel can be self-locked by the pawl every time the ratchet wheel passes through the tooth space of the ratchet wheel. The problem that the contact base drastically slides down due to errors in the process is prevented, and potential safety hazards caused by the problem are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit detection equipment, and in particular relates to a foundation pit settlement monitoring device. Background Art

[0002] Ground subsidence is also called ground subsidence or ground subsidence. It is a local downward movement caused by the consolidation and compression of loose underground strata under the influence of human engineering and economic activities, resulting in a lowering of the surface elevation of the earth's crust. In order to avoid the hazards of building tilt and collapse, it is necessary to monitor the settlement of these foundation pits before construction, monitor their depth, density, etc., to avoid foundation sinking and collapse during construction.

[0003] The existing patent with announcement number CN220978131U discloses a foundation pit settlement monitoring device, including a detection box, a settlement pipe is fixedly arranged at the bottom of the detection box, a mounting rod is arranged inside the settlement pipe and near the center, and a displacement plate is arranged inside the settlement pipe at the position of the mounting rod; an insertion block is arranged on the outer side of the displacement plate near the settlement pipe, one end of the insertion block is plugged into the displacement plate, and the other end passes through the wall of the settlement pipe; a plurality of connecting rods are arranged at the lower end of the displacement plate, and a base is arranged at the lower end of the plurality of connecting rods.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the settlement tube is suspended above the foundation pit settlement monitoring position, and the limit of the displacement plate by the plug block is released by pulling out the plug block, so that the displacement block is used to drive the base to slide down, so that the base and the monitored land are fitted. For the restoration of the displacement plate, it is necessary to push the base to drive the displacement plate to slide upward, and after the displacement plate moves to the initial limit position, the plug block is reinserted into the settlement tube, thereby completing the limit of the displacement plate. However, the position where the plug block is inserted into the settlement tube is fixed, which in turn determines that the limit position of the displacement plate is fixed. When pushing the base to slide upward, the base can only be prevented from sliding downward when it reaches the limit position of the displacement plate. If an error occurs during this process, the base will slide down significantly, which poses certain safety hazards. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a foundation pit settlement monitoring device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A foundation pit settlement monitoring device comprises an installation box, a plurality of support rods are adjustable and plugged on the upper part of the installation box, a settlement tube is fixedly arranged at the bottom of the installation box, a fixing ring is slidingly arranged in the settlement tube, a plurality of connecting rods are fixedly arranged at the bottom of the fixing ring, the bottoms of the plurality of connecting rods slide through the settlement tube and a contact base is fixedly arranged; a transmission shaft is horizontally rotated and penetrated on the settlement tube, a ratchet is fixedly arranged on the part of the transmission shaft outside the settlement tube, a rocker arm is fixedly arranged on the end of the transmission shaft outside the settlement tube, and a gear is coaxially fixedly arranged on the end of the transmission shaft inside the settlement tube; a rack is fixedly arranged on the surface of one of the connecting rods in the vertical direction, the rack meshes with the gear for transmission, and the rack slides through the settlement tube; a motor is fixedly installed on the settlement tube, a connecting shaft is fixedly arranged on the output shaft of the motor, a ratchet is rotatably arranged on the other end of the connecting shaft, and the ratchet cooperates with the ratchet for transmission; a torsion spring is arranged between the connecting shaft and the ratchet, one end of the torsion spring is fixedly connected to the connecting shaft, and the other end is fixedly connected to the ratchet.

[0008] Furthermore, a controller is fixedly installed in the installation box, a distance measuring sensor is fixedly arranged at the bottom of the controller, the distance measuring sensor is located in the sedimentation tube, and an output end of the distance measuring sensor faces the contact base.

[0009] Furthermore, a solar panel and an alarm are fixedly installed on the top of the installation box, the solar panel has a built-in battery, and the solar panel is electrically connected to the controller and the distance measuring sensor.

[0010] This application has the following beneficial effects:

[0011] 1. When the contact base slides upward, the pawl will self-lock the ratchet every time the ratchet tooth spacing is passed, preventing the contact base from sliding down sharply due to mistakes during this process, and avoiding the resulting safety hazards.

[0012] 2. During the sliding of the fixed ring, the meshing of the rack and the gear will consume part of the impact force, thereby reducing the probability of damage to the contact base due to excessive impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3It is a schematic diagram of the ratchet pawl clamping structure of the utility model.

[0017] Description of reference numerals:

[0018] 1. Installation box; 2. Alarm; 3. Settlement tube; 4. Solar panel; 5. Support rod; 6. Threaded rod; 7. Bolt; 8. Limit ring; 9. Controller; 10. Fixing ring; 11. Distance sensor; 12. Connecting rod; 13. Rack; 14. Gear; 15. Drive shaft; 16. Ratchet; 17. Connecting shaft; 18. Pawl; 19. Rocker arm; 20. Contact base. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-Figure 3 As shown, the technical solution adopted by the utility model is as follows: a foundation pit settlement monitoring device, including an installation box 1, the installation box 1 is cylindrical, and a plurality of support rods 5 are inserted into the interior of the installation box 1 in the horizontal direction, and the plurality of support rods 5 are evenly distributed along the circumference of the installation box 1. A limit plate is fixedly set at one end of each support rod 5 located inside the installation box 1, and the other end of the support rod 5 slides through the installation box 1. In addition, one end of each support rod 5 located outside the installation box 1 is threadedly connected to a threaded rod 6 in the vertical direction, and a support pad is fixedly set at the bottom of each threaded rod 6.

[0021] A plurality of stop rings 8 are fixedly arranged on the installation box 1, and the plurality of stop rings 8 correspond to the plurality of support rods 5 one by one, and each support rod 5 slides through the corresponding stop ring 8. A bolt 7 is threadedly connected to each stop ring 8, and each bolt 7 abuts and cooperates with the corresponding support rod 5 through the corresponding stop ring 8. This facilitates the installation box 1 to maintain a horizontal state above the foundation pit drilling hole, and the installation box 1 and the settlement pipe 3 to maintain a stable state.

[0022] The solar panel 4 and the alarm 2 are fixedly installed on the top of the installation box 1, and the solar panel 4 has a built-in battery. The controller 9 is fixedly installed in the installation box 1, and the distance sensor 11 is fixedly arranged at the bottom of the controller 9. The battery is electrically connected to the controller 9 and the distance sensor 11. The controller 9 is electrically connected to the alarm 2 and the distance sensor 11.

[0023] The bottom of the installation box 1 is coaxially fixed with a settling tube 3, and the distance sensor 11 is located in the settling tube 3. A fixing ring 10 is slidably arranged in the vertical direction in the settling tube 3, and the distance sensor 11 passes through the inner ring of the fixing ring 10. A plurality of connecting rods 12 are fixedly arranged at the bottom of the fixing ring 10, and the bottoms of the plurality of connecting rods 12 all slide through the settling tube 3, and a contact base 20 is fixedly arranged at the bottom of the plurality of connecting rods 12. A through hole is provided at the bottom of the settling tube 3, and the detection laser generated by the distance sensor 11 is directed toward the contact base 20 through the through hole, so as to facilitate the detection of the height change generated by the contact base 20.

[0024] A transmission shaft 15 is rotatably arranged on the settling tube 3 in the horizontal direction, and a ratchet 16 is fixedly sleeved on the portion of the transmission shaft 15 outside the settling tube 3. A rocker arm 19 is fixedly arranged on the end of the transmission shaft 15 outside the settling tube 3, and a gear 14 is coaxially fixedly arranged on the end of the transmission shaft 15 inside the settling tube 3. A rack 13 is fixedly arranged on the surface of one of the connecting rods 12 in the vertical direction, and the rack 13 is meshed with the gear 14 for transmission. In addition, the rack 13 slides through the settling tube 3.

[0025] The motor is fixedly installed on the outer surface of the settling tube 3 in the horizontal direction, and the output shaft of the motor is fixedly provided with a connecting shaft 17, and a ratchet 18 is rotatably provided at the other end of the connecting shaft 17, and the ratchet 18 is transmission-coordinated with the ratchet wheel 16. In addition, a torsion spring is fixedly provided between the connecting shaft 17 and the ratchet 18, and one end of the torsion spring is fixedly connected to the connecting shaft 17, and the other end of the torsion spring is fixedly connected to the ratchet 18.

[0026] Working principle: When it is necessary to monitor the foundation pit settlement, pull the support rods 5 and adjust the extension of the support rods 5 so that the threaded rods 6 can support the foundation pit settlement monitoring device at the edge of the foundation pit. Then turn the bolts 7 to fix the length of the support rods 5 so that the settlement pipe 3 is suspended above the foundation pit settlement detection position.

[0027] In the initial state, the pawl 18 is in a locked state with the ratchet wheel 16. When the motor is started, the output shaft of the motor drives the connecting shaft 17 to rotate, and the connecting shaft 17 drives the pawl 18 to rotate to overcome the torsion force of the torsion spring, thereby releasing the engagement between the pawl 18 and the ratchet wheel 16.

[0028] The motor is then stopped. Under the effect of gravity, the fixing ring 10, the connecting rod 12 and the contact base 20 will slide downward, thereby controlling the contact base 20 to contact the ground.

[0029] The solar panel 4 is used to power the distance sensor 11 and the controller 9. When the bottom of the foundation pit settles, the contact base 20 also drops. The distance sensor 11 detects the position change of the contact base 20 and transmits the detected data to the controller 9 via an electrical signal.

[0030] The staff sets the threshold value for the controller 9 in advance. When the foundation pit settlement distance measured by the distance measuring sensor 11 exceeds the threshold value set by the controller 9, the controller 9 sends an electrical signal to the alarm 2, causing the alarm 2 to generate an alarm, thereby performing real-time detection of the foundation pit settlement.

[0031] After the monitoring is completed, the output shaft of the motor is controlled to rotate in the opposite direction. The output shaft of the motor drives the connecting shaft 17 to rotate synchronously, and the connecting shaft 17 drives the pawl 18 to rotate by overcoming the torsion force of the torsion spring, thereby realizing the engagement between the pawl 18 and the ratchet wheel 16. Then the motor is stopped.

[0032] Next, the rocker arm 19 is rotated. The rocker arm 19 drives the transmission shaft 15 to rotate, and the transmission shaft 15 drives the rack 13 to slide upward through the gear 14, thereby driving the contact base 20 to rise through the connecting rod 12. When the contact base 20 rises to a suitable position, the rocker arm 19 is stopped from rotating. In this process, under the clamping cooperation of the torsion spring and the ratchet 16 and the pawl 18, the pawl 18 will complete a self-locking of the ratchet 16 every time the tooth spacing of the ratchet 16 passes, thereby preventing the contact base 20 from sliding downward significantly. Avoid the contact base 20 from sliding downward significantly to cause safety hazards to people.

Claims

1. A foundation pit settlement monitoring device, comprising a mounting box (1), wherein a plurality of support rods (5) are adjustable and plugged on the upper portion of the mounting box (1), a settlement pipe (3) is fixedly arranged at the bottom of the mounting box (1), a fixing ring (10) is slidably arranged in the settlement pipe (3), a plurality of connecting rods (12) are fixedly arranged at the bottom of the fixing ring (10), and the bottom portions of the plurality of connecting rods (12) slide through the settlement pipe (3) and are fixedly arranged with a contact base (20); characterized in that: A transmission shaft (15) is horizontally rotatably provided on the sedimentation tube (3), a ratchet (16) is fixedly provided on the portion of the transmission shaft (15) located outside the sedimentation tube (3), a rocker arm (19) is fixedly provided on the end of the transmission shaft (15) located outside the sedimentation tube (3), and a gear (14) is coaxially fixedly provided on the end of the transmission shaft (15) located inside the sedimentation tube (3); a rack (13) is fixedly provided on the surface of one of the connecting rods (12) in a vertical direction, the rack (13) meshes with the gear (14) for transmission, and the rack (13) slidably passes through the sedimentation tube (3); a motor is fixedly installed on the sedimentation tube (3), a connecting shaft (17) is fixedly provided on the output shaft of the motor, a ratchet (18) is rotatably provided on the other end of the connecting shaft (17), and the ratchet (18) is transmission-coordinated with the ratchet (16); a torsion spring is provided between the connecting shaft (17) and the ratchet (18), one end of the torsion spring is fixedly connected to the connecting shaft (17), and the other end of the torsion spring is fixedly connected to the ratchet (18).

2. The foundation pit settlement monitoring device according to claim 1, characterized in that: A controller (9) is fixedly installed in the installation box (1), a distance sensor (11) is fixedly arranged at the bottom of the controller (9), the distance sensor (11) is located in the sedimentation tube (3), and the output end of the distance sensor (11) faces the contact base (20).

3. The foundation pit settlement monitoring device according to claim 2, characterized in that: A solar panel (4) and an alarm (2) are fixedly mounted on the top of the installation box (1); the solar panel (4) has a built-in storage battery; the solar panel (4) is electrically connected to the controller (9) and the distance sensor (11).

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